CN103459125A - Fiber reinforced strip with shaped section and concrete panel comprising shaped reinforced strip section - Google Patents
Fiber reinforced strip with shaped section and concrete panel comprising shaped reinforced strip section Download PDFInfo
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- CN103459125A CN103459125A CN201180069607XA CN201180069607A CN103459125A CN 103459125 A CN103459125 A CN 103459125A CN 201180069607X A CN201180069607X A CN 201180069607XA CN 201180069607 A CN201180069607 A CN 201180069607A CN 103459125 A CN103459125 A CN 103459125A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/564—Winding and joining, e.g. winding spirally for making non-tubular articles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/8066—Impregnating
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Composite reinforcement bars are formed by providing a supply of reinforcement material for fiber strand rovings, a resin supply bath, and a pulling device for pulling the reinforcement material impregnated with resin through the resin bath. The material is wound on a holder with the resin remaining unsolidified, the holder being rotated on a drive system about its axis so that the material is wound on a plurality of rods at spaced locations about the axis so that a feed section of the reinforcement bar body is wound from one rod to the next to form a curved portion of the reinforcement bar body partially wound on each rod and a straight portion between the rods. Each strip has an angled slot shaped to mold the curved portion into the desired curved shape. The holder is directed along its axis and removed when full, in order to cure the resin on the holder while the reinforcement strip remains wound around the holder.
Description
Technical field
The present invention relates to the method for the fibre-reinforced stiffener of a kind of manufacture or " enhancing bar ", wherein, described enhancing bar is crooked or be shaped with respect to the straight path of bar along the part of length, and the present invention relates to a kind of concrete slab, and described concrete slab comprises the enhancing bar section of shaping.
When this uses, term " enhancing bar " is intended to comprise bar and the rod of hollow, i.e. pipe.Outer surface preferably but must not be ring section.Rod can have any length.
Background technology
In building, sea-freight aquatic products industry, mining and other side, use fibre reinforced plastics (FRP) rod day by day to increase.This is because fibre reinforced plastics have many advantages, such as, (chemistry or salt solution) corrosion-resistant, nonmetal (or non magnetic) and non-conductive, hot strength is approximately twice to the three times degree of reinforcing rod hot strength, but weight is its weight 1/4, with reinforcing rod, be more suitable for the thermal coefficient of expansion of concrete or rock.Usually process to produce most of and described mostly several have the profile of straight line or uniformity by pultrusion.Traditional pultrusion is processed and is comprised: for example, by reinforcing material source drawing reinforcing material (, fiber or filament), restrainted; By making reinforcing material soak fiber and impregnation of fibers (but preferably using thermoset polymer resin) by the resin body lotion in the open type case; To pass through finishing die with the Shu Ladong of resin wetted and dipping, in order to make fibre bundle aim at and handle it, become suitable cross-sectional configuration; And make resin solidify in mould when keeping acting on the tension force on long filament.Because fiber is fully processed and is advanced and be not cut off or break apart by chopping by pultrusion, thus final products usually in a longitudinal direction (that is, along pulling filametntary direction) there is abnormal high hot strength.U.S. Patent No. 3,793,108 at Goldsworthy; 4,394,338 of Fuwa; 4,445,957 of Harvey; With Tong 5,174,844 in exemplary pultrusion technology has been described.
The consistent profile of fibre reinforced plastics or straight line rod provide some advantages in multiple sector application.Rod is corrosion-resistant, and has higher hot strength and alleviated weight.In the past, deformed steel bar or twisted steel anchor rod are widely used in engineering practice.Yet, fill with and have the steel anchor rod of mortar to show in the Sweden long-term observation, the mass deficiency of grouting material account for 50% of object, and more anchor pole stands serious corrosion.With steel anchor rod, compare, the FRP anchor pole corrosion-resistant and can use simultaneously temporary transient support and final lining cutting in, and the constructions cost with single trimmed tunnel of FRP rock-bolt be have the conventional on-site casting concrete tunnel constructions cost 33% to 50%.This FRP rock-bolt system is durable in use and as part supporting construction during whole service life of final lining cutting.And, due to they seawater corrosion resistances, for example, so FRP anchor pole and anchor also are proved to be the good solution in beach (, on the coast or offshore breakwater), to strengthen xoncrete structure.Usually, glass fibre bar/anchor pole has had critical role, and will be very important product for mining and building trade.The emphasis demand of these industries is the demands to structural reinforcement, and described structural reinforcement provides long-term reliability, and this has cost benefit.Because the composite strengthening bar will continue to continue indefinite duration, so will there is remarkable meaning for the cost savings in these industry maintenances and upkeep operation.
The mining industry needs the compound bar of mine or tunnel top crab-bolt.Described compound bar is transported and is arranged in mine laneway eminence usually by hand, therefore useful be Fiber glass rod be current extensive use reinforcing bar weight 1/4 but be 2 times of the intensity of reinforcing bar.Fiber glass rod also can not damage winning equipment.In building trade, such as Qiao, road, anti-ripple carry with building structure in, be widely used the reinforcing bar reinforcement and experience after service life several years most of reinforcing bar be corroded.Typically, in the time of one section, after date is split usually falls for the structure that has a reinforcing bar.Therefore, in recent years, building trade has been promoted the use of anticorrosive composite strengthening bar day by day.
Certainly, traditional reinforcing bar can be crooked with usually in end, but also can form at other positions of the length along bar hooks or ring or angled section.Multiple purpose needs this bend, such as for bar being attached to other parts.
The FRP formed by thermosetting resin strengthens bar certainly can not be crooked after forming the enhancing bar.Up to the present important unsolved problem is about the bend of mode forming in the enhancing bar that uses thermosetting resin as how effective and business is got a profit
Summary of the invention
An object of the present invention is to provide a kind of method that forms the fiber reinforcement bar that uses the thermosetting resin manufacture to form, wherein, locating to comprise bending section along one or more sections of its length for described.
A kind of method that forms bar is provided according to a first aspect of the invention, and described method comprises:
Parts extending longitudinally by fortifying fibre form slender bodies, and wherein, described parts are substantially vertically arranged with respect to described slender bodies, along the length of described slender bodies, supplied with forward described slender bodies;
With the not solidified described slender bodies of resin wetted that can be curing, the described not solidified fiber that can curing resin permeates described parts;
Keeper is provided, makes keeper receive one section described slender bodies;
Described keeper is installed, keeper is rotated around axis;
A plurality of engagement members are provided on described keeper, and described engagement member is in around the isolated position of described axis;
Keep the not solidified while at resin, described slender bodies is wrapped on described keeper, make supply Duan Congyi described engagement member of described slender bodies be wound into next described engagement member, make the sweep of described slender bodies partly be wrapped on each described engagement member, and the straight part of described slender bodies is extended between each engagement member and next engagement member;
Each described engagement member has the surface portion that the axial separation of angled extension is opened, and described surface portion is shaped, so that described sweep is molded as to required curved shape;
Be provided at the relative motion between described slender bodies and described keeper while supplying with described slender bodies forward, in order in the stair-stepping position of the one-tenth along described engagement member, described slender bodies is wrapped on described keeper; With
When described slender bodies keeps being wrapped on described keeper, solidify described resin on described keeper.
Preferably, each engagement member all with the spaced apart preset distance of next engagement member, select described preset distance, in order to limit the Len req between each sweep and next sweep.By this way, if cut off bar in next-door neighbour bend office, it defines the straight part that length equals described distance.Yet, can also cut off bar in different position, for example, half distance between sweep, in said case, still be scheduled to the length of straight part, but described length be described distance half.
Preferably, when keeper is stopped while filling up being wound around by the part side by side of slender bodies, the part side by side of described slender bodies arranges along engagement member, and after stopping being wound around resin solidification.Preferably, in order to realize this independent solidifying, pull down keeper and resin in the situation that keeper is pulled down curing when stopping being wound around.Yet, solidifies and can realize in ongoing processing, and keeper continues rotation simultaneously.
Preferably, by along axis, guiding keeper to obtain the relative motion between slender bodies and keeper.This can implement along the support-moving on drive system by making keeper.
Preferably, keeper has outer shroud, and described outer shroud is placed in drive unit.
Preferably, engagement member is arranged on keeper, for adjusting its position.By this way, can realize the different size of straight part and the different angles of winding.
Preferably, engagement member is the bar paralleled to the axis.
Preferably, each all has a series of isolated grooves along bar engagement member or bar, wherein the respective curved part of every groove reception slender bodies.
Preferably, keeper is arranged to, and makes the quantity of engagement member or bar to change.That is, described quantity can be only two, in order to the winding angle of 180 degree is provided, can be also four, in order to the winding angle of 90 degree is provided or can is other quantity changed along with respective angles.
Preferably, keeper is arranged to, and makes engagement member radially to adjust with respect to axis.This has changed the distance between member or bar.
Preferably, with an angular speed, around the axis drives keeper, described keeper obtains described slender bodies with constant linear velocity.That is, from feeding mechanism, supply with slender bodies and with constant speed, it be wound into keeper.
In other option, slender bodies can be in the opposite direction in the second bending position place bending, to form the second sweep, described the second sweep has such angle, utilizes the second engagement member to form described angle along the direction bending relative with described sweep.In this option, by at first being wound around described engagement member or bar, and then insert described the second engagement member (, other bar), allow described original bar inwardly to move to discharge the section of described slender bodies towards described axis simultaneously, thereby engage described other bar, form described the second sweep.
In an arrangement, at a bend office cutting slender bodies, to form one section slender bodies, described one section slender bodies has a straight part and a sweep.
In another arrangement, cut slender bodies between bar, to form u shape reinforcement, u shape reinforcement has the sweep of two straight parts and 180 degree between two straight portion are divided.By u shape reinforcement is cast in concrete slab and can uses this arrangement, wherein, straight part is positioned at plate, and sweep exposes in an edge of plate, to form, promotes annular element.In this case, described method can comprise uses annular element to promote described edge, with the described plate that raises.In said case, can after being risen to desired location, plate cut off annular element.Because their reinforcements that to be fibre reinforced plastics make, leave the difficult point that end does not exist corrosion to cause in the surface of plate, and therefore do not need to cover and coating.
Preferably, form the step that strengthens bar and comprise the inside that a series of fortifying fibres are provided parts extending longitudinally, described inside parts extending longitudinally are vertically arranged with respect to described, and at least one wrap of at least one parts is provided, and described wrap is wrapped on inner parts extending longitudinally.
Described wrap can be the reason of the part of structure be its intention rove complete and in use after remain on correct position.In replacement scheme, wrap can be used in and is being wound on bar to keep the integrality of structure during carrying out bending process.In this case, wrap can not have structural contribution in strengthening bar final, and only for bundle is kept together, or even completes after solidifying and can be removed and abandon as expendable material.In some cases, when for complete increase to imbedding the material that strengthens bar in conjunction with the time, particle can be adhered to the outer surface that strengthens bar.
In the situation that wrap is structural, it typically is spirality.Yet, can use winding material extending longitudinally.That is, material can or be wound on bar or only and covers on bar.
At wrap, be in spiral situation, preferably wrap comprises one or more the first and second spiral winding parts that winding direction is contrary, wherein, the resin described interior parts extending longitudinally of infiltration and described wrap, to form the structure of the resin integrated formation that utilizes infiltration.
Preferably, bar has outer surface part, described outer surface part is extended along most of length of at least described slender bodies, and in described outer surface portion office, described interior parts extending longitudinally have the part of exposure between described one or more the first and second wraps, described part is during curing outwards heaved because of the tension force that described one or more wraps apply, the described part of heaving the outer surface part that defines bar, described part coarse and exposure thus is used for engaging material to be strengthened, in order to transmit longitudinal loading between material to be strengthened and interior rove.
Although inner part preferably or typically be rove, can be used the known polytype of other material or those of skill in the art.Inner part preferably but necessarily is wound around along a direction or both direction.And, wrap preferably or typically be rove, but can use other material (such as pad or line) or the known polytype of those of skill in the art.
Second purpose of the present invention is to provide a kind of concrete slab, and described concrete slab is used the shaping reinforcement of manufacturing according to above content.
According to a second aspect of the invention, provide a kind of concrete slab, described concrete slab comprises:
A plurality of u shape reinforcement elements;
The cast concrete parts, embedding in described cast concrete parts have a reinforcement element;
Each described enhancing bar element all has the sweep of two straight parts and 180 degree between described two straight portion are divided, and described sweep forms ring;
Described ring is exposed to an edge of described concrete member, for promoting described concrete slab;
Described enhancing bar element is formed by the rove of fortifying fibre, and described rove is with respect to vertical layout of described body cardinal principle, and thermosetting resin is penetrated into described body by described rove.
Preferably, described enhancing bar element comprises the parts interior extending longitudinally of a series of fortifying fibres, described interior parts extending longitudinally are vertically arranged with respect to described enhancing bar element, and at least one spiral winding part that at least one parts is provided, described at least one spiral winding part is wrapped on described interior parts extending longitudinally.
Preferably, described at least one spiral winding part comprises one or more the first and second spiral winding parts that winding direction is contrary, and wherein, the resin described interior parts extending longitudinally of infiltration and described wrap, to form the structure of the resin integrated formation that utilizes infiltration.
Preferably, described body has outer surface part, in described outer surface portion office, described interior parts extending longitudinally have the part of exposure between described one or more the first and second wraps, described part is during curing outwards heaved because of the tension force that described one or more the first and second wraps apply, the described part that defines the outer surface part that strengthens the bar element of heaving, described part coarse and exposure thus is used for engaging material to be strengthened, in order to transmit longitudinal loading between material to be strengthened and interior rove.
The accompanying drawing explanation
Fig. 1 is the side front view by the part of enhancing bar made according to the method for the present invention;
Fig. 2 is the cutaway view obtained along lines 2-2 of Fig. 1;
Fig. 3 is cutaway view similar with the cutaway view of Fig. 2 and that draw with magnification ratio;
Fig. 4 is the cutaway view along lines 4-4 of Fig. 1;
Fig. 5 is the schematic side elevation view of method that forms the enhancing bar of Fig. 1;
Fig. 6 is the keeper of Fig. 5 and the isometric view of drive system;
Fig. 7 is the keeper of Fig. 5 and the side front view of drive system;
Fig. 8 is the side front view that Fig. 5 keeper is pulled down to be cured;
Fig. 9 and Figure 10 are the side front views of the keeper of Fig. 5, revise described keeper to comprise the joint rod that reduces quantity and to revise keeper so that the optional method that forms other curved sections along contrary angle direction to be shown;
Figure 11 is the side front view of the concrete slab that forms of the enhancing bar that uses the keeper manufacture by Fig. 8 to form.
The specific embodiment
Figure 1 illustrates the enhancing bar that entirety by reference numeral 10 means.The method that use is described in more detail below forms described enhancing bar, to form straight portions 100 and bending section 101.
Use shown in the applicant's open U. S. application 2008/0261042 and the method for describing form basic bar structure, for the following disclosure of repeating described application of completeness.
Strengthen bar 10 and have first paragraph 11, described first paragraph 11 extends along the most of length that strengthens bar together with second segment 12, and described second segment 12 has extended a part that strengthens the length of bar.Increase and tune up body and form with continuous structure, so that first and second sections are alternately repeated.With respect to the length of major section 1, the length of second segment is only a short part, thereby for example major section can be 12 feet long, and second segment is only long for 6''.
Strengthen bar and only formed by resin material 14, described resin material 14 is penetrated into each section of fortifying fibre, and described fortifying fibre comprises vertical fortifying fibre 15 and fiber-reinforced wrapped 16,17.
Vertically fortifying fibre 15 forms the main volume of structure, so that the fiber inclusion can be configured to the longitudinal fiber that accounts for 90% to 97% and account for 3% to 10% winding fiber usually, wherein, the resin inclusion can account for about 20% to 30% by weight.
Formation be arranged in part 11 zone structure and without by pultrusion, process the compression any fiber.Therefore, the inner core formed by longitudinal fiber 15 or outer wrap 16 and 17 be not all by mould structure, thereby they freely occupy their positions that the tension force in material is determined when forming.
Resin can be two parts resin, described two parts resin is without just solidifiable of heat, but it is more preferably thermosetting resin, the any heating of described thermosetting resin in the obtainable heating technique of many kinds (such as heating using microwave, pressure air heat, infrared heating, radio frequency heating or eddy-current heating), wherein at least one metallic fiber is included in structure, so that absorption of electromagnetic energy.Therefore, heat is applied to described structure, does not contact with structural heater to affect resin solidification simultaneously.By this way, the fiber in first paragraph 11 freely occupies their position and occupies the position in resin according to their tension force, so that resin extends through longitudinal fiber and is wound around fiber.
Extend out to the situation of outer surface 18 and infiltration all fibres in order to obtain resin 14, longitudinal fiber and winding fiber all preferably soak by bath method or impregnation process, so that fiber is wrapped up by resin fully entering between formation system, wholely in more detail in the inventor's above-mentioned United States Patent (USP) describe and show described formation system.
Wetting fiber is guaranteed the total of resin infiltration outer surface 18.
Any compression that does not exist the mould by providing any type of core that makes longitudinal fiber to pass through to implement, guaranteed to be wound around fiber 16 and 17 that pressure is applied to longitudinal fiber be wound around on the contacted part of fiber, described mould, described winding fiber inwardly pushes those longitudinal fibers and causes longitudinal fiber to be heaved in section 19.Therefore, between each take-up strap of fiber, have such part of longitudinal fiber, described part is extruded and outwards heaves, so that it is projected into such position, described location optimization ground swells slightly from the outer surface that is wound around fiber.
Be wound around fiber certainly spaced apart because of the spiral winding behavior in a longitudinal direction, the width that is wound around fiber is less than the width of the interlude 19 of heaving.
Usually, the winding fiber be wound around along each direction can be spaced apart about 1 to 3 inch.Yet, suppose suitably to control longitudinal fiber and hypothesis and exist enough spaces to guarantee heaving between wrap, can use wider or less interval.
The single rove that the winding fiber can be used as in single head winding processing is wound around or is wound around as many rove that are applied in bull winding processing.In this bull is processed, the quantity of rove side by side can be in 3 to 10 scope.The quantity of the rove in the winding position place or rove thickness can change according to the diameter of core.
The winding behavior in two directions occurs, with box lunch they to be wound around fiber during for example with such intersection the shown in Reference numeral 20 overlapped.By this way, the section of heaving is roughly rhombus and is squeezed because of the winding behavior that is wound around fiber at top and place, bottom in front view.Therefore, the section of heaving 19 under the effect that is wound around fiber separately and separate, and locate during winding suitably comprised and remain to structure because of the top in the section of heaving and bottom by described longitudinal fiber.
Even in two directions being symmetrical arranged wrap or a plurality of wrap is tending towards comprising and locates inner vertically rove and also keep in a longitudinal direction inner vertically rove when applying tension force.Therefore, keep full strength in a longitudinal direction of longitudinal fiber and because of the twisted any trend of longitudinal fiber, do not reduce or diminish described full strength.Any so twisted of longitudinal fiber all can be by succession load applying significantly being reduced to intensity to different fibers, thereby cause successive failure.In addition, wrap in the opposite direction adapts to and in two directions is applied to excellent torque.
Therefore the section of heaving 19 is present on outer surface 18, for the material of imbedding wherein with the enhancing bar, combines.Therefore, if material to be strengthened is concrete, concrete solidifies and engages the section of heaving 19 strengthening around bar.From concrete and be applied to the longitudinal loading that strengthens bar and therefore be transferred to the section of heaving 19 and not only transfer to and be wound around sections 16 and 17.Due to its angle with respect to longitudinal direction, therefore be wound around section and compare with longitudinal fiber, its ability that adapts to longitudinal tension force is lower, and described longitudinal fiber is vertical and continuous.Therefore, in a longitudinal direction load transfer has been guaranteed load transfer in longitudinal fiber to the section of heaving 19, and avoided transferring to such element, described element can lengthwise movement or is stripped down from outer surface 18.The section of heaving 19 can not be moved certainly in a longitudinal direction, and this is because they are parts of longitudinal fiber.
Therefore, outer surface can not have other bonding outstanding element (such as coarse sand or grit), and described other joint prodger is applied to the outer surface of this enhancing bar usually.
Resin penetrates longitudinal fiber and is wound around fiber to the fact of outer surface 18 to be guaranteed to be wound around fiber and effectively is adhered in structure.
When the part by strengthening bar is clamped in clamping die while forming second segment 12, second segment periodically forms along strengthening bar.When structure travels forward motion, clamping die can move together along with structure, or can stop motion when the clamping behavior occurring or occur to solidify in clip position.Usually, in the remainder that strengthens bar moves to bringing-up section to form the described section be held before completing curing action.Clamping die has inner surface, and described inner surface is configured as such as foursquare polygon, and clamping die extruding winding fiber and longitudinal fiber, so that they form required profile 22 as shown in Figure 4.The clamping behavior by fiber extrusion together and can reduce cross-sectional area because of the extruding of the resin that carrys out self-structure.Longitudinal fiber extends through gripping section and is wound around fiber and extends through gripping section, as shown in Figure 4.Therefore, the winding fiber of two-way winding is in polygonal second segment 12 places are clamped to structure.
As polygonal replacement scheme, can use any non-circular shape, such as the compression flat pattern.
As other replacement scheme, slightly strengthen bar and can form the hole with perforation fiber, in order to be provided for the connecting portion of anchor.
Therefore second segment 12 is shaped, so that described can be grasped by chuck or other clamping element, in order to carry out described of confinement period to described under particular case, can rotate around its axis.Be wound around rotation that fiber 16 and 17 the guarantees second segment 12 places section 16 and 17 by those windings and be converted into torque on the whole length of bar.
In using an example of such arrangement, in the boring in described rock that can be inserted in the mining position and hole with suitable resin filling.By the bar rotation that grasps second segment 12 and rotation first paragraph 11, cause the stirring behavior in resin, this stirring behavior to cause resin to disperse by described hole around periphery in the effective stirring behavior caused by the section of heaving 19.Therefore, bar can be adhered in the correct position in boring, so as at the top area place of for example mine as the reinforcement for ro om-character.
In another alternate application of such enhancing bar, drill bit can be attached at section 12 places, at another section 12 places, grasps bar, thereby allow bar to rotate together with drill bit, this causes boring behavior that bar directly is driven in boring, and meanwhile, bar causes and forms boring.Then bar can remain in correct position and selected drill bit is abundant disposable type, so that it can be discarded in hole.
And the direct connection allowable load because existing winding fiber 16 and 17 to cause in resin between the major part of polygon section 12 and bar shifts between polygon section and major section 11.
Have been found that the remarkable favourable part of arrangement described here is, it provides the intensity of imbedding improved, and the described intensity of imbedding is the factor of using when the parameter of calculating for the enhancing bar in concrete.Therefore, the shape of outer surface (in two directions be wound around, vertically strand heaves) provides attached with the higher degree of adhesives (concrete or epoxy resin).This higher mechanical adhesion is transformed into height and imbeds intensity.
The remarkable favourable part that has been found that arrangement described here is, it provides the improvement of fracture width to control.The measured value of fracture width is another factor of using when calculating the parameter of overlapping for the enhancing in concrete, and it is intended to keep low fracture width factor.When design Crack Control reinforcement, the character of this product and Qi Gao imbed intensity will allow to use less bonding dependent coefficient (for example, the bar of coated sand is used 0.8, and smooth pultrusion bar will be higher).Lower bonding dependent coefficient is transformed into less fracture width, or same fracture width needs reinforcement still less.
At Fig. 5 to Fig. 8, show for the manufacture of the method that strengthens bar, described enhancing bar has straight part 100 and sweep 101.Described method comprises conventional system 20, and described conventional system 20 forms slender bodies 23 for the rove by fortifying fibre, and the rove of described fortifying fibre is with respect to the vertical layout of slender bodies cardinal principle, and slender bodies is 21 supplies forward along its length from provisioning component.Use the not solidified curable resin wetted slender bodies 23 of infiltration rove in bathing pool 22.Supply with forward slender bodies 23 by driving and guidance system 23A, and in order to attempt the tension force that keeps predetermined, by being driven forwards or more usually by controlling the feed from feeding mechanism 21, at a predetermined velocity by the described slender bodies 23 of described system supply to guarantee constant supply, what remember is that speed can change according to many factors.
Therefore, keeper comprises hub 28, and described hub 28 comprises many cross slide waies 30, and described cross slide way 30 stretches out, for bar 27 being supported on from the outside isolated position of hub axis.Guide rail 30 is supported on a plurality of engagement members or bar 27 around the isolated position of axis 31A, and wherein, every bar all is parallel to described axis.
Every bar 27 is roughly has the cylindrical of outer surface 33, for receiving the enhancing bar body 23 on bobbin winder bracket to be wound.Every bar 27 has a series of axially spaced grooves 34 all on its outer surface, and wherein, every groove 34 all has and is arranged to the radius of curvature and the width that are complementary with the periphery that strengthens bar body 23.Therefore, when bobbin winder bracket, during around the rotation of its axis, strengthen the bar body and then be routed in every groove 34 along bar 27, wherein, groove will strengthen that the bar body remains in the ad-hoc location on bar 27 and be spaced apart with the enhancing bar body of next one winding.Therefore, there do not is contact between each wrap and next wrap.Be defined as general cylindrical in order to keep strengthening the bar body, at least one wrap of at least one parts is around interior reeling roving.
This wrap can be the reason of the part of structure be its intention rove complete and in use after remain on correct position.In replacement scheme, wrap can be used in and is being wound on bar to keep the integrality of structure during carrying out bending process.In this case, wrap can not have structural contribution in strengthening bar final, and only for bundle is kept together, or even completes after solidifying and can be removed and abandon as expendable material.In some cases, when for complete increase to imbedding the material that strengthens bar in conjunction with the time, particle can be adhered to the outer surface that strengthens bar.
In the situation that wrap is structural, it typically is screw type.Yet, can use winding material extending longitudinally.That is, described material can be wound on bar or only and cover on bar.
Although resin keeps not solidifying, but strengthening the bar body is wound on keeper, make a supply Duan Congyi engagement member that strengthens the bar body be wound up into next engagement member, make the sweep that strengthens the bar body partly be wound on each engagement member, and the straight part of enhancing bar body is extended between each engagement member and next engagement member.Therefore each engagement member all has the surface portion that the axial separation of angled extension is opened, and described surface portion is shaped sweep is molded as to required curved shape.Drive system 25 provides the bobbin winder bracket rotation by drive hub 28 around axis 31A, and provide when strengthening when bar body 23 is supplied with forward and strengthen the relative motion between bar body 23 and keeper 24, in order to will strengthen on the bar 27 that bar body 23 is wound on keeper in the stair-stepping position limited by groove 34 along bar 27.
As shown in Figure 8, when keeper is filled, when each in groove 34 has been enhanced the part joint of bar body, the resin solidification in enhancing bar body, on keeper, keeps being wound on keeper and strengthen bar body 23.That is to say, when being enhanced being partially filled side by side of bar body, keeper stops this winding, the part side by side of described enhancing bar body is arranged along engagement member, and resin is curing after stopping being wound around, pulls down keeper and place it in suitable stove 50 or in other heating system.
Should be understood that, every bar 27 all is spaced a distance with next root bar, in order to limit the Len req between each sweep and next sweep.For this reason, for example by limit guide rail and locking system can adjusting lever 27 along the position of guide rail 30, described guide rail and locking system allow bar inwardly to slide when being arranged on the desired location place of the 31A that parallels to the axis.
Drive system 25 comprises tower-like 251 and 252, and for the respective end of support hub 28, or hub can stretch out with cantilever from one tower-like.Transmission mechanism 253 drive hub, described transmission mechanism 253 is arranged on underframe 254.Can be by being strengthened bar body 23 by the fixed supply position guiding driven and guidance system 23A limits and guiding keeper 24 to obtain the relative motion strengthened between bar body 23 and keeper 24 along axis 31A.As shown in Figure 6, by moving by guiding motor 258 to make framework 254 move to obtain to guide along outer support framework 257, described framework 254 carrying hubs 28, described guide motor 258 comprises suitable drive system, and described drive system can be worm screw, chain or tooth bar or other mechanical drive system.Can be constant or can become as required step-by-step movement through the guide campaign of framework 257, what remember is to strengthen the bar body to be routed in groove and therefore and to be kept and guided by these grooves, in order to suitably be positioned on keeper in the axially spaced position limited by groove.Therefore with constant torque around the axis drives keeper, be applied to enhancing bar body 23 for the tension force by constant.Roll speed in order to obtain constant linearity, when the radial position at the coiling position on respective rods inwardly and outwards changes with respect to axis, hub 28 and therefore bar 27 around the angular speed of axis, must change in the different position, angle around axis.
When filling, can only from drive system, pull down keeper (Fig. 8) by from tower-like, pulling down hub and make the keeper motion leave to stove 50.Then the keeper of the second sky in the keeper group of right quantity is replaced described keeper, in order to allow to produce continuously, wherein, fill full keeper in solidifying, and another empty keeper is in reeling.
Keeper can have the different-diameter of the bar 27 of permission in a plurality of positions.For example, bobbin winder bracket can have the diameter of 25 feet, and wherein, a plurality of diverse locations of bar are feasible, in order to multiple varying number and the position of bar are provided for the different length of the different winding angles of sweep and straight part.Usually, strengthen the bar body with such radius of curvature bending, described radius of curvature coupling strengthens the diameter of bar body, so that the outer surface 33 of bar 27 is not subject to the impact of winding angle usually to have same diameter.For the diameter of the enhancing bar formed, the width of the certain matching slot of this surface diameter of bar.Different bobbin winder brackets is therefore for the enhancing bar of different-diameter, and such as 0.5 inch, 1.0 inches or 1.5 inches, and such bobbin winder bracket can be implemented all required forms for custom-designed enhancing bar diameter.
In Fig. 8, keeper is arranged to, and makes the number change of engagement member.That is to say, remove two in described bar 27, only stay two bars, thereby allow to be wound around 180 degree around every bar.
In Fig. 9 and Figure 10, illustrated for make strengthen bar body 23 at the second bending position 40 places crooked method in the opposite direction, it has along the angle of the direction bending relative with the sweep formed by bar 27.
Therefore, as shown in FIG. 9, at first in the mode with identical as mentioned above, will strengthen on the bar that bar body 23 is wrapped in bobbin winder bracket 26.When completing this winding and preparation and pull down bobbin winder bracket, perhaps after pulling down bobbin winder bracket, by the second engagement member or bar 42 are inserted on bobbin winder bracket and by the correct position that makes them inwardly move between bar 27 towards axis 31A and form the second sweep.Therefore, in Fig. 9 and Figure 10, show four bars 27, described four bar 27 equal angles are spaced apart, and four bars 42 are also in the position at direct equal angles interval between bar 27.Yet bar 27 and 42 quantity and angle intervals can change as required.In the situation that do not have bar 42 initially to be wound around.Then, bar 42 is applied on bobbin winder bracket, and the inside motion M1 of bar as shown in figure 10 42 inwardly pulls and strengthens bar body 23, and therefore need bar 27A and 27B inwardly to move according to motion M2 towards axis 31A, in order to adapt to this motion, to discharge multistage enhancing bar body 23, engage the second bar 42.Can use the inside motion of spring 42A automatic control rod 27, to adapt to this motion.By this way, the crooked multiple different designs that strengthens bar can be formed with according to consumer's needs the diverse location place and with the bend of the isolated bend of different interval, different winding angles and the bend of different directions.
After completing in stove 50 and solidifying, the desired location place according to required shape on bar cuts off the section of the winding of extending around bar 27.Therefore in one example, a bend office on a side of bar 27 cuts off and strengthens bar body 23, in order to form the section of a series of enhancing bar bodies 23, every section all has one and extends to the straight part of next root bar and be wrapped in a sweep bar from bar.By this way, form a series of required enhancing bar parts by the length cutting along every bar 27.
In another example, cut off described enhancing bar body 23 and form u shape enhancing bar, described u shape strengthens the sweep that bar has two straight parts and one 180 degree between two straight portion are divided.This can by bobbin winder bracket only with two bars 27 and between bar 27 the position cutting of equidistant apart obtain.
Yet these are only example, and can use described system and form multiple difformity and arrangement.
Especially, figure 11 illustrates the u shape and strengthen bar 55, wherein, show the bottom of U with Reference numeral 50, and show shank with Reference numeral 51 and 52.Described u shape strengthens bar 55 and is cast in concrete slab 53, and wherein, straight part 51 and 52 is positioned at plate, and the sweep at 50 places of U is exposed to 54 places, an edge of plate, to form drop handle.Therefore at edge, 54 places form a line drop handle to annular element 50, and described drop handle can combine with the bar 56 of elevator system, in order to mention all rings simultaneously, with riser and by plate, is carried in desired location.Then simple cutting ring after plate is thus lifted to desired location.
As previously explained and shown in Fig. 1 like that, form the step that strengthens bar and comprise the interior rove that a series of fortifying fibres are provided, described interior rove is vertically arranged with respect to bar; One or more first spiral winding parts of at least one rove are provided, and described rove is wrapped on interior rove along the first winding direction; With one or more the second spiral winding parts that at least one rove is provided, described rove is wrapped on interior rove along the second contrary winding direction, and wherein, rove and wrap in the resin infiltration, to form the resin-shaped all-in-one-piece structure of utilizing infiltration.
Therefore, bar has outer surface part, described outer surface part is along at least most of length extension of bar, and at the outer surface part place, interior rove has the part of exposure between one or more the first and second wraps, described part is during curing outwards heaved because of the tension force that a wrap or a plurality of wrap apply, described such part of heaving the outer surface part that defines bar, described part coarse and exposure thus is used for engaging material to be strengthened, in order to transmit longitudinal loading between material to be strengthened and interior rove.
Although inner part preferably or typically be rove, can be used other material or polytype known to those skilled in the art.Inner part preferably but must be wound around along one or two direction.And wrap is preferred or typically be rove, but also can use other material or the known polytype of those of skill in the art such as pad or line.
Claims (23)
1. a method that forms bar, described method comprises:
Parts extending longitudinally by fortifying fibre form slender bodies, and wherein, described parts are substantially vertically arranged with respect to described slender bodies, along the length of described slender bodies, supplied with forward described slender bodies;
With the not solidified described slender bodies of resin wetted that can be curing, the described not solidified fiber that can curing resin permeates described parts;
Keeper is provided, makes keeper receive one section described slender bodies;
Described keeper is installed, keeper is rotated around axis;
A plurality of engagement members are provided on described keeper, and described engagement member is in around the isolated position of described axis;
Keep the not solidified while at resin, described slender bodies is wrapped on described keeper, make supply Duan Congyi described engagement member of described slender bodies be wound into next described engagement member, make the sweep of described slender bodies partly be wrapped on each described engagement member, and the straight part of described slender bodies is extended between each engagement member and next engagement member;
Each described engagement member has the surface portion that the axial separation of angled extension is opened, and described surface portion is shaped, so that described sweep is molded as to required curved shape;
Be provided at the relative motion between described slender bodies and described keeper while supplying with described slender bodies forward, in order in the stair-stepping position of the one-tenth along described engagement member, described slender bodies is wrapped on described keeper; With
When described slender bodies keeps being wrapped on described keeper, solidify described resin on described keeper.
2. method according to claim 1, wherein, described each engagement member all is spaced a distance with next engagement member, in order to limit required length between each sweep and next sweep.
3. according to claim 1 or claim 2, wherein, when described keeper is full by being partially filled side by side of the described slender bodies of arranging along described engagement member, stop being wound around, and wherein, solidify described resin after stopping described winding.
4. according to the described method of any one in claims 1 to 3, wherein, pull down described keeper when stopping being wound around.
5. according to the described method of any one in claim 1 to 4, wherein, described resin is in the situation that described keeper is pulled down curing.
6. according to the described method of any one in claim 1 to 5, wherein, by guide described keeper along described axis, obtain the relative motion between described slender bodies and described keeper.
7. according to the described method of any one in claim 1 to 6, wherein, described engagement member is arranged on described keeper, for adjusting the position of described engagement member.
8. according to the described method of any one in claim 1 to 7, wherein, described engagement member is the bar that is parallel to described axis.
9. according to the described method of any one in claim 1 to 8, wherein, each all has a series of isolated grooves described engagement member, and wherein, every described groove all receives the respective curved part of described slender bodies.
10. according to the described method of any one in claim 1 to 9, wherein, described keeper is arranged to, and makes the quantity of described engagement member to change.
11. according to the described method of any one in claim 1 to 10, wherein, described keeper is arranged to, and makes it possible to radially adjust described engagement member with respect to axis.
12. according to the described method of any one in claim 1 to 11, wherein, around described axis, with a fixed angular speed, drive described keeper, described keeper obtains described slender bodies with constant linear velocity.
13. according to the described method of any one in claim 1 to 12, wherein, described slender bodies along contrary direction in the second bending position place bending to form the second sweep, described the second sweep has the angle of utilizing the second engagement member to form along the direction bending relative with described sweep.
14. method according to claim 13, wherein, by at first being wound around described engagement member and then inserting described the second engagement member, allow described engagement member inwardly to move to discharge the section of described slender bodies towards described axis simultaneously, thereby engage described the second engagement member, form described the second sweep.
15. according to the described method of any one in claim 1 to 14, described method is included in a bend office and cuts off described slender bodies, to form the section with a straight part and a sweep of described slender bodies.
16. according to the described method of any one in claim 1 to 15, described method comprises that cutting off described slender bodies strengthens bar to form the u shape, and described u shape strengthens the sweep that bar has two straight parts and one 180 degree between described two straight portion are divided.
17. according to the described method of any one in claim 1 to 16, wherein, the step that forms described enhancing bar comprises the parts interior extending longitudinally that a series of fortifying fibres are provided, described interior parts extending longitudinally are vertically arranged with respect to described enhancing bar, and at least one spiral winding part that at least one parts is provided, described at least one spiral winding part is wrapped on described interior parts extending longitudinally.
18. method according to claim 17, wherein, described at least one spiral winding part comprises one or more the first and second spiral winding parts that winding direction is contrary, wherein, the resin described interior parts extending longitudinally of infiltration and described the first and second spiral winding parts, to form the structure of the resin integrated formation that utilizes infiltration.
19. method according to claim 18, wherein, described slender bodies has outer surface part, described outer surface part is extended along most of length of at least described slender bodies, and in described outer surface portion office, described interior parts extending longitudinally have the part of exposure between described one or more the first and second wraps, described part is during curing outwards heaved because of the tension force that described one or more the first and second wraps apply, the described part that defines the outer surface part that strengthens bar of heaving, described part coarse and exposure thus is used for engaging material to be strengthened, in order to transmit longitudinal loading between material to be strengthened and interior rove.
20. a concrete slab, described concrete slab comprises:
A plurality of u shapes strengthen the bar element;
The concrete member of building, embedding in described concrete member of building have a described enhancing bar element;
Each described enhancing bar element all has the sweep of two straight parts and 180 degree between described two straight portion are divided, and described sweep forms ring;
Described ring is exposed to an edge of described concrete member, for promoting described concrete slab;
Described enhancing bar element is formed by the rove of fortifying fibre, and described rove is with respect to vertical layout of described body cardinal principle, and thermosetting resin is penetrated into described body by described rove.
21. concrete slab according to claim 1, wherein, described enhancing bar element comprises the parts interior extending longitudinally of a series of fortifying fibres, described interior parts extending longitudinally are vertically arranged with respect to described enhancing bar element, and at least one spiral winding part that at least one parts is provided, described at least one spiral winding part is wrapped on described interior parts extending longitudinally.
22. concrete slab according to claim 2, wherein, wherein, described at least one spiral winding part comprises one or more the first and second spiral winding parts that winding direction is contrary, wherein, the resin described interior parts extending longitudinally of infiltration and described the first and second spiral winding parts, to form the structure of the resin integrated formation that utilizes infiltration.
23. concrete slab according to claim 3, wherein, described body has outer surface part, in described outer surface portion office, described interior parts extending longitudinally have the part of exposure between described one or more the first and second wraps, described part is during curing outwards heaved because of the tension force that described one or more the first and second wraps apply, the described part that defines the outer surface part that strengthens the bar element of heaving, described part coarse and exposure thus is used for engaging material to be strengthened, in order to transmit longitudinal loading between material to be strengthened and interior rove.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2731343 | 2011-02-14 | ||
| CA2731343A CA2731343C (en) | 2011-02-14 | 2011-02-14 | Fiber reinforced rebar with shaped sections |
| PCT/CA2011/050813 WO2012109726A1 (en) | 2011-02-14 | 2011-12-29 | Fiber reinforced rebar with shaped sections and a concrete panel including the shaped rebar sections |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103459125A true CN103459125A (en) | 2013-12-18 |
| CN103459125B CN103459125B (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180069607.XA Active CN103459125B (en) | 2011-02-14 | 2011-12-29 | Fiber reinforced strip with shaped section and concrete panel comprising shaped reinforced strip section |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2675607A4 (en) |
| JP (1) | JP5996557B2 (en) |
| CN (1) | CN103459125B (en) |
| CA (1) | CA2731343C (en) |
| WO (1) | WO2012109726A1 (en) |
Cited By (4)
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|---|---|---|---|---|
| CN110012664A (en) * | 2016-06-30 | 2019-07-12 | 兰德尔·布兰斯特罗姆 | Fiber reinforced bar with shaped portion |
| CN110147622A (en) * | 2019-05-23 | 2019-08-20 | 重庆交通大学 | Determine the method that full assembled steel-mixes the fracture width of composite beam bridge |
| CN113804528A (en) * | 2021-10-15 | 2021-12-17 | 巨石集团有限公司 | Sample preparation device and performance test method |
| CN115008783A (en) * | 2021-03-03 | 2022-09-06 | 保时捷股份公司 | Fiber composite component, device and method for producing a fiber composite component |
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| CA2773042A1 (en) | 2012-03-23 | 2013-09-23 | Pultrall Inc. | Curved rod with improved mechanical resistance on its curve and production method therefof |
| DE102012108132B4 (en) * | 2012-08-31 | 2015-01-22 | Firep Rebar Technology Gmbh | Process for the production of reinforcing elements made of fiber-reinforced plastic |
| WO2021033086A1 (en) * | 2019-08-16 | 2021-02-25 | Pultron Composites Limited | Apparatus and process for producing pultruded frp rebar |
| CN114570855B (en) * | 2022-03-15 | 2022-11-04 | 济宁市兖州区建设工程质量安全服务中心 | Pile head steel bar shaping equipment |
| KR102551838B1 (en) * | 2022-09-19 | 2023-07-04 | 주식회사 바스티온컴퍼니 | Glass Fiber Riva Manufacturing Equipment |
| CN115782163B (en) * | 2022-11-28 | 2024-07-16 | 武汉理工大学 | Forming device and method for isotropic continuous fiber reinforced composite material |
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- 2011-12-29 WO PCT/CA2011/050813 patent/WO2012109726A1/en active Application Filing
- 2011-12-29 CN CN201180069607.XA patent/CN103459125B/en active Active
- 2011-12-29 JP JP2013552801A patent/JP5996557B2/en active Active
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| CN110012664A (en) * | 2016-06-30 | 2019-07-12 | 兰德尔·布兰斯特罗姆 | Fiber reinforced bar with shaped portion |
| CN110012664B (en) * | 2016-06-30 | 2021-10-15 | 兰德尔·布兰斯特罗姆 | Fiber reinforced strip with shaped portions |
| CN110147622A (en) * | 2019-05-23 | 2019-08-20 | 重庆交通大学 | Determine the method that full assembled steel-mixes the fracture width of composite beam bridge |
| CN115008783A (en) * | 2021-03-03 | 2022-09-06 | 保时捷股份公司 | Fiber composite component, device and method for producing a fiber composite component |
| CN115008783B (en) * | 2021-03-03 | 2024-01-05 | 保时捷股份公司 | Fiber composite component, apparatus and method of manufacturing a fiber composite component |
| CN113804528A (en) * | 2021-10-15 | 2021-12-17 | 巨石集团有限公司 | Sample preparation device and performance test method |
| CN113804528B (en) * | 2021-10-15 | 2024-02-20 | 巨石集团有限公司 | Sample preparation device and performance test method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014509964A (en) | 2014-04-24 |
| CN103459125B (en) | 2015-05-27 |
| WO2012109726A1 (en) | 2012-08-23 |
| CA2731343C (en) | 2011-10-11 |
| EP2675607A1 (en) | 2013-12-25 |
| EP2675607A4 (en) | 2016-10-19 |
| JP5996557B2 (en) | 2016-09-21 |
| CA2731343A1 (en) | 2011-04-25 |
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