KR20080111686A - Bridge using phc girder and slab-phc complex girder - Google Patents

Bridge using phc girder and slab-phc complex girder Download PDF

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Publication number
KR20080111686A
KR20080111686A KR1020070059942A KR20070059942A KR20080111686A KR 20080111686 A KR20080111686 A KR 20080111686A KR 1020070059942 A KR1020070059942 A KR 1020070059942A KR 20070059942 A KR20070059942 A KR 20070059942A KR 20080111686 A KR20080111686 A KR 20080111686A
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South Korea
Prior art keywords
girder
phc
slab
bridge
position fixing
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KR1020070059942A
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Korean (ko)
Inventor
이지훈
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(주)청석엔지니어링
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Priority to KR1020070059942A priority Critical patent/KR20080111686A/en
Publication of KR20080111686A publication Critical patent/KR20080111686A/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/268—Composite concrete-metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention is a PHC girder having a tubular body having a hollow portion is installed between the points of the bridge, the slab is integrally coupled to the upper surface of the PHC girder to form the bottom plate of the bridge; A pair of girder position fixing members is installed on the upper portion of the bridge point so that a longitudinal end of the PHC girder is placed between the girder position fixing members, and a band-type fastening means is placed between the girder position fixing members. After wrapping the end of the girder, both ends are fixed to the girder position fixing member, so that the position is fixed so that the PHC girder does not move in the direction perpendicular to the throttle; A shear connector is installed on an upper surface of the PHC girder in contact with the slab; The shear connector is embedded in the concrete to be poured into the slab and the branch portion relates to the girder bridge, characterized in that the PHC girder has a structure that is integrally connected to the slab and the branch portion to form a bridge.

Description

Bridge and slab integrated PHC composite girder using PHC girder {Bridge using PHC Girder and Slab-PHC Complex Girder}

1A to 1E are schematic perspective views showing a procedure for constructing a short span bridge using the PHC girder of the present invention in order, respectively.

FIG. 2A is a schematic cross sectional view of the bridge deck in accordance with FIGS. 1A-1E.

2B and 2C are schematic cross-sectional cross sectional views of a bridge deck according to another embodiment of the present invention, respectively.

3A and 3B are schematic perspective views each showing an end portion of a PHC girder according to an embodiment of the present invention.

FIG. 4 is an enlarged view of a circle A portion of FIG. 1C and is a perspective view showing the installation structure of the PHC girder at the point portion. FIG.

<Description of the symbols for the main parts of the drawings>

1 PHC girder 10 body

20 slab 40 girder position fixing member

The present invention relates to a bridge and slab-integrated PHC composite girder using PHC girder, and in particular, the PHC member is arranged side by side in the direction of the bridge, and used as a girder, by combining the shear connector to the PHC girder and the concrete concrete and slab And a bridge formed by fixing and installing a PHC girder on the pier or the upper part of the branch using a band-type fastening means, and a slab is placed on the PHC girder to form the slab and the girder integrally. It is about PHC composite girder.

Girders mounted on the bridges (piers or alternating bridges) are generally constructed by pouring concrete at the site, or made of precast members, transported to the site, and then mounted on the bridges.

In the construction of the conventional girder and the bottom plate, mainly a prestressed concrete girder is used to reduce the cross section of the girder, and a construction method using the precast member to shorten the construction period. However, in the case of prestressed concrete girder, short span bridges are troublesome to install sheath pipe, loss of prestressing force due to friction between tension material and sheath pipe, difficulty in field work, and more expensive tension material is introduced in longer span. It must be economically disadvantageous, and there is a problem that stress concentration occurs in the fixing unit by the introduction of tension force.

In addition, in the case of using steel materials such as steel boxes as girders, the dead weight and volume of the girders are reduced, thereby improving the ease of construction and the safety of the bridges. There is a problem that the installation of a large number of welded parts, the construction of the bridge is complicated, the fatigue safety is weak, there is a limit to increase the thickness of the steel sheet, so that the span length is not increased.

On the other hand, the PHC member is used as a pile for the foundation construction, because it is manufactured in the factory in the precast method, there is an advantage that the high strength and the quality is also excellent.

The present invention was developed to solve the problems of the prior art as described above, to provide a PHC girder bridge and slab integrated PHC composite girder to improve the durability and workability by using a high-strength precast member PHC member do.

In order to achieve the above object, in the present invention, a PHC girder having a tubular body having a hollow portion is installed between the points of the bridge, the slab is integrally coupled to the upper surface of the PHC girder bridge bottom plate Make up; A pair of girder position fixing members is installed on the upper portion of the bridge point so that a longitudinal end of the PHC girder is placed between the girder position fixing members, and a band-type fastening means is placed between the girder position fixing members. After wrapping the girder end, both ends are fixed to the girder position fixing member so that the position is fixed so that the PHC girder does not move in the direction perpendicular to the throttle; A shear connector is installed on an upper surface of the PHC girder in contact with the slab; The shear connection member is embedded in the concrete to be poured into the slab and the branch portion provides the girder bridge, characterized in that the PHC girder is integrally connected with the slab and the branch portion to form a bridge.

In addition, in the present invention, the PHC girder and the slab are previously integrated integrally to form a PHC composite girder made of one unit; The slab has a reinforcing bar projecting on both sides of the axial direction perpendicular to the slab; Mounting the PHC composite girders to the point portion, but arranged in a plurality of axial direction perpendicular to the girder, the girder having a structure to form a superstructure of the bridge by placing concrete so that the reinforcing bar is embedded between neighboring slabs Provide a bridge.

In addition, in the present invention, a mounting member protrudes from the longitudinal side end of the PHC girder; Grooves are formed in the upper end of the girder position fixing member, thereby providing a girder bridge, characterized in that the mounting member is placed in the groove.

In addition, in the present invention, the girder bridge is characterized in that the shear connection member is further protruded in the longitudinal surface of the end of the PHC girder is embedded in the concrete placed in the point portion so that the concrete and the end of the PHC girder are integrated. to provide.

In addition, the present invention is a precast composite girder integrally formed with a PHC girder and a slab, the PHC girder is made of a tubular body having a hollow portion; The body is provided with a shear connector protruding on the upper surface in contact with the slab; Concrete is poured in the upper part of the PHC girder so that the shear connector is embedded, and a slab is integrally formed with the PHC girder; The slab-integrated PHC composite girders are provided on both sides of the slab in the axial direction perpendicular to the slab.

Hereinafter, with reference to the accompanying drawings will be described a specific configuration and effect of the PHC girder and the bridge using the same according to the present invention.

1A to 1E are schematic perspective views showing the construction of a short span bridge using the PHC girder 1 of the present invention in order, respectively, in the following, a PHC girder 1 according to the present invention will be described with reference to the following. Explain the construction process of the bridge using). First, in FIG. 1A, as an example of the PHC composite girder 2 according to the present invention, in which the PHC girder 1 and the slab 20 are integrated, a slab 20 having a predetermined width is previously integrated into the PHC girder 1. Shown is a PHC composite girder 2 that is combined to form one unit. PHC girder (1) constituting the PHC composite girder (2) is made of a tubular shape having a hollow portion 16, the hollow portion 16 may be filled by the filling concrete (17) but used without additional filling It is also possible. In FIG. 1A, reference numeral 21 denotes a reinforcing bar 21.

 Figure 1b is a perspective view showing a state in which a pair of girder position fixing member 40 is installed on the upper surface of the shift to the PHC girder 1 is installed at the point of the bridge. In the embodiment shown in the figure, the girder position fixing member 40 is made of c-beams, the c-beams adjacent to each other in the upper portion of the shift is installed in a projected state to face each other. The girder position fixing member 40 is not limited to the c-beam, but if it is composed of c-beam can be easily installed as described below PHC girder (1), the following girder position consisting of c-beam The present invention will be described by illustrating an embodiment having the fixing member 40.

FIG. 1C shows a state in which the PHC composite girder 2 shown in FIG. 1A is mounted on the shift (bridge point). The position of the PHC girder 1 is fixed to the girder position fixing member 40 of the c-beam. After the mounting of the PHC girder (1), as shown in Figure 1d, the girder integral floor by placing concrete 50 between the slab 20 so that the joint reinforcing bar 21 projecting to the side of the slab 20 is embedded It will form a plate. Subsequently, the concrete 50 is poured into the end of the PHC girder 1 and the alternating upper portion (which may be the upper portion of the pier in the case of a continuous bridge), thereby completing a point where the PHC girder 1 and the alternating portion (or the pier) are integrated with each other. Done. Figure 1e is a perspective view showing a state of completing the bridge construction by paving the top of the base plate with asphalt, and installing a railing on the side of the bridge. For reference, in FIG. 1A and FIG. 1C, the shear connecting material (to be described later) provided at the end of the PHC girder 1 positioned at the point portion is omitted for convenience.

As described above, in the present invention, a plurality of PHC girders 1 are arranged side by side in the axial direction on the alternating or pier to be used as the girder of the bridge, and the upper structure of the bridge by constructing the slab integrally on the PHC girder 1 To form. 2A to 2C are schematic side cross-sectional and enlarged views, respectively, in a perpendicular direction of the axial axis showing the configuration of the bottom plate in the bridge according to the present invention, respectively. Figure 2a is a bottom plate cross-sectional view of the bridge described the construction method with reference to Figures 1a to 1e above, this embodiment, as described above, before the PHC girder 1 is installed between the alternating or pier, a predetermined width The slab 20 of the precast method is integrally installed in the PHC girder 1 in advance to form a unit-shaped PHC composite girder 2, a plurality of such PHC composite girder (2) is disposed in the axial direction perpendicular to the overall It consists of a girder integrated bridge deck. Both sides of the slab 20 made of the precast member, the reinforcing bar 21 is projected and reinforcement, as shown in Figure 1d by placing the field concrete 50 between the neighboring slab 20 neighboring PHC composite girder (2) ) Is integrated with the bottom plate.

By the way, the present invention is not necessarily limited to the above embodiment, the bottom plate may be constructed by the site-pouring concrete 50 in a state in which the PHC girder 1 is installed between alternations or piers. This configuration is shown in Figures 2b and 2c. That is, Figure 2a shows the construction of the bottom plate by allowing the slab 20 to be integrated with the PHC girder 1 by placing concrete 50 on top of the PHC girder 1 in the field using a general wood formwork FIG. 2C is a cross sectional view showing the construction of the bottom plate using the precast concrete formwork (PCF) 22. FIG. When using the precast concrete formwork 22 as in the case of Figure 2c when installing the bottom plate, the risk of work by installing a separate formwork made of steel or wood, etc. can be removed, and the construction period can also be reduced There is an advantage.

3A and 3B show an end of the PHC girder 1 according to one embodiment of the invention in a perspective view. The PHC girder 1 of the present invention uses a tubular PHC member having a hollow portion 16 as a girder mounted on an upper portion of the bridge, and the PHC girder 1 is a pipe in which the hollow portion 16 is formed. Consists of a body 10 of the shape. The body 10 is made of a circular tube or a square tube. The member number 11 is a longitudinal reinforcing bar 11 provided in the longitudinal direction inside the body 10.

In the present invention, in order for the PHC girder 1 to be integrally coupled with the slab 20 to form a bottom plate, the shear connecting member 14 is integrally formed on the upper surface of the PHC girder 1 to be coupled with the slab 20. It is provided with. When the slab 20 is installed on the PHC girder 1, the shear connector 14 integrates the PHC girder 1 and the slab 20 by being embedded in the slab 20. In the embodiment shown in the figure the shear connector 14 is made of a bolt member. That is, in the embodiment shown in the drawing, in order to couple the shear connector 14 made of bolts to the PHC girder 1, the buried nut 13 is pre-installed in the body 10 of the PHC girder 1, It has a configuration for coupling the bolt. In this case, the buried nut 13 may be welded to a transverse rebar (not shown) disposed in the body 10. As such, the shear connecting member 14 may be integrally installed on the PHC girder 1 by coupling the bolts in the state where the buried nut 13 is installed. However, the shear connector 14 is not necessarily limited to the above-exemplified embodiments, and may use various types of shear connector.

On the other hand, the shear connector 14 as described above may be installed in the cross section of the PHC girder 1, as well as the upper surface of the PHC girder 1, as shown in the embodiment of Figure 3a. Thus, the shear connecting member 14 protruding in the cross section of the PHC girder 1 is, when the concrete 50 is poured into the point portion in the state where the end of the PHC girder 1 is installed in the upper part of the alternating or pier, By being embedded in the concrete 50, the end of the PHC girder 1 is firmly integrated with the concrete 50 at the point portion.

Although the PHC girder 1 may be mounted in a hollow state in which the hollow part 16 formed inside the body 10 is empty, the hollow part 16 is filled in the hollow part 16 to increase the bonding area with the concrete part 50. Concrete 17 may be poured. At this time, the filling concrete 17 may be poured over the entire longitudinal direction of the body 10 or may be poured only on a part of the hollow portion 16. When the hollow portion 16 is filled with the stuffed concrete 17, the stuffed concrete, as shown in FIG. 3B, in place of or in parallel with the shear connector 14 installed on the cross section of the PHC girder 1. The coupling connector 12 may be buried in 17 so that the end of the coupling connector 12 protrudes to the outside. The coupling connector 12 with the end protruding to the outside is embedded in the concrete 50 at the point, similarly to the shear connector 14 protrudingly installed in the cross section of the PHC girder 1, thereby the end of the PHC girder 1. To be firmly integrated with the concrete 50 at the point.

In addition to the method of installing the coupling connector 12 to the filling concrete 17 or to install a separate shear connector 14 to the end of the PHC girder 1, disposed on the body 10 of the PHC girder 1 The longitudinal reinforcing bars 11 may be further projected to the outside to be embedded in the concrete 50 at the point.

As shown in the figure, the body 10 at the end of the PHC girder 1, the end of the PHC girder 1 by the girder position fixing member 40 provided on the upper surface of the alternating or pier at the point portion alternately or Mounting member 19 is provided to be placed in place on the top of the pier.

In the embodiment shown in Figures 3a and 3b, the mounting member 19 is made of a rod member, so that the mounting member 19 made of the rod member is provided on the body 10, the mounting member ( Insertion holes 18 into which 19 is inserted are formed at both sides of the body 10 at the ends of the PHC girder 1. However, the mounting member 19 may be formed in a separate member as described above, in addition to the manner in which the mounting member 19 is assembled to the body 10.

Figure 4 is an enlarged view of the circle A portion of Figure 1c, the end of the PHC girder 1 is an embodiment of the structure is fixed by the girder position fixing member 40 provided on the upper surface of the alternating or piers Figure showing. In the embodiment shown in the figure the girder position fixing member 40 is composed of two c-beams, provided in the body 10 of the end of the PHC girder 1 to be mounted on the girder position fixing member 40 The mounting member 19 consists of a rod member. Looking at the specific coupling structure, the girder position fixing member 40 is composed of two c-beams, the c-beams are installed in a state in which the flat plate 43 protrudes to face each other. A groove 41 is formed on the flat plate 43 of the c-shaped steel so that the mounting member 19 formed of the rod member can be placed thereon.

Therefore, when the end of the PHC girder 1 is placed between the c-beams of the girder position fixing member 40, the rod member was coupled to the insertion hole 18 formed on both sides of the body 10 of the PHC girder 1 The mounting member 19 is placed in the groove 41 of the c-shaped steel, the position of the PHC composite girder 1 is fixed by the girder position fixing member 40.

Referring to FIG. 1B, the structure in which the above-described PHC composite girder 1 is joined to the point of the bridge is described in detail. The point portion of the bridge (the upper portion of the bridge or the pier) is located at both sides of the PHC girder 1 Girder position fixing member (40) made of c-shaped steel to the upper portion of the point portion is provided is embedded in a protruding state. The c-beams of the girder position fixing member 40 are positioned one by one on both sides of the PHC girder 1. A groove 41 is formed at the upper end of the c-shaped steel, and the mounting member 19 provided in the PHC girder 1 is fixed to the groove 41.

On the other hand, the PHC girder (1) may be more firmly coupled to both members using the band-type fastening means 44 in the state that is placed on the girder position fixing member 40, for this purpose, girder position fixing member 40 The intermediate plate 42 is installed in the longitudinal direction of the c-shaped steel, and one end of the band-type fastening means 44 made of steel or the like is fixed to the intermediate plate 42 and then the band-shaped fastening means 44. The PHC girder 1 may be firmly restrained on the girder position fixing member 40 by winding the PHC girder 1 and fixing the other end of the band type fastening means 44 to the intermediate plate 42 of the other side C-shaped steel. Can be.

When the concrete 50 is poured into the point portion in the state where the end of the PHC girder 1 is fixed by the girder position fixing member 40, the ends of the girder position fixing member 40 and the PHC girder 1 are All are embedded in concrete 50.

In the above described the present invention by illustrating the short span bridge shown in the drawings, the present invention can be applied to multi-span bridge as well as short span bridge.

As described above, according to the present invention, the durability and workability of the bridge structure can be improved by using a PHC girder which is a high strength precast member.

In addition, the present invention has the advantage that construction management and material purchase is facilitated by using the PHC member, which is a ready pile member, as the girder of the bridge.

In particular, by mounting the fixing member provided on the PHC girder end on the girder position fixing member made of c-shaped steel installed on the bridge, it is possible to easily fix the position of the PHC girder.

Claims (5)

A PHC girder 1 having a tubular body 10 having a hollow portion 16 is installed between the point portions of the bridge, and the slab 20 is integrally coupled to the upper surface of the PHC girder 1. To form the bottom plate of the bridge; A pair of girder position fixing members 40 are installed on the upper portion of the bridge point, so that the longitudinal end of the PHC girder 1 lies between the girder position fixing members 40, and a band-type fastening means ( 44 is wrapped between the ends of the PHC girder (1) between the girder position fixing member 40, both ends are fixed to the girder position fixing member 40, respectively, so that the PHC girder (1) moves in the axial direction The position is fixed so as not to be; A shear connector 14 is installed on an upper surface of the body 10 of the PHC girder 1 in contact with the slab 20; The shear connecting member 14 is embedded in the slab 20 and the concrete 50 to be poured into the point portion structure that the PHC girder 1 is integrally connected to the slab 20 and the point portion to form a bridge Girder bridge, characterized in that having a. The method of claim 1, The PHC girder (1) and the slab (20) are previously integrated integrally to form a PHC composite girder (2) made of one unit; The slab (20) has a joint reinforcing bar (21) protruding on both sides in the direction perpendicular to the axial axis; The PHC composite girder 2 is mounted on the point portion, but is disposed in plural in the axial direction of the bridge, and the concrete 50 is poured so that the joint reinforcing bars 21 are embedded between the neighboring slabs 20. A girder bridge having a structure forming a structure. The method according to claim 1 or 2, A mounting member 19 protrudes from the side of the body 10 at a longitudinal end of the PHC girder 1; Girder bridge, characterized in that the groove 41 is formed in the upper end of the girder position fixing member 40, the mounting member 19 is placed in the groove (41). The method according to claim 1 or 2, On the longitudinal surface of the end of the PHC girder 1 is further embedded with a concrete 50 to be poured into the point portion is provided with a shear connector 14 for the concrete 50 and the end of the PHC girder 1 is integrated. Girder bridge characterized in that. As a precast composite girder in which the PHC girder 1 and the slab 20 are integrally formed, The PHC girder (1) consists of a tubular body (10) having a hollow portion (16); The body (10) is provided with a shear connecting member (14) protruding on the upper surface in contact with the slab (20); The slab 20 is formed integrally with the PHC girder 1 by pouring concrete 50 so that the shear connector 14 is embedded in the PHC girder 1; Slab-integrated PHC composite girder, characterized in that it has a structure in which the joint reinforcing bar 21 protrudes on both sides of the slab 20 in the axial direction perpendicular to the slab.
KR1020070059942A 2007-06-19 2007-06-19 Bridge using phc girder and slab-phc complex girder KR20080111686A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101403428B1 (en) * 2013-09-16 2014-06-03 충남대학교산학협력단 Bridges production and construction methods using integrally fabricated girder with cap-beam
KR101439947B1 (en) * 2012-08-20 2014-09-12 주식회사 동성엔지니어링 Bridge using girder with ring plate and bracket and bridge construction method therefor
CN107905113A (en) * 2017-12-07 2018-04-13 中国十七冶集团有限公司 A kind of Steel Tubes For Bridge Application positioner
KR102038311B1 (en) * 2019-03-26 2019-10-30 김효진 Conner parts structure of steel composite rahmen bridge and the construction method of the same bridge
KR20210076836A (en) * 2019-12-13 2021-06-24 주식회사 인터컨스텍 Girder structure and construction method for continuity of supporting portion of girder using the same
KR102671025B1 (en) * 2023-09-19 2024-05-30 (주) 대현이엔씨 Pier and Construction Method using Centrifugal High-Strength PHC Piles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101439947B1 (en) * 2012-08-20 2014-09-12 주식회사 동성엔지니어링 Bridge using girder with ring plate and bracket and bridge construction method therefor
KR101403428B1 (en) * 2013-09-16 2014-06-03 충남대학교산학협력단 Bridges production and construction methods using integrally fabricated girder with cap-beam
CN107905113A (en) * 2017-12-07 2018-04-13 中国十七冶集团有限公司 A kind of Steel Tubes For Bridge Application positioner
CN107905113B (en) * 2017-12-07 2019-08-06 中国十七冶集团有限公司 A kind of Steel Tubes For Bridge Application positioning device
KR102038311B1 (en) * 2019-03-26 2019-10-30 김효진 Conner parts structure of steel composite rahmen bridge and the construction method of the same bridge
KR20210076836A (en) * 2019-12-13 2021-06-24 주식회사 인터컨스텍 Girder structure and construction method for continuity of supporting portion of girder using the same
KR102671025B1 (en) * 2023-09-19 2024-05-30 (주) 대현이엔씨 Pier and Construction Method using Centrifugal High-Strength PHC Piles

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