CN103967019A - Fish-bellied beam device for supporting foundation ditch - Google Patents
Fish-bellied beam device for supporting foundation ditch Download PDFInfo
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- CN103967019A CN103967019A CN201410231577.3A CN201410231577A CN103967019A CN 103967019 A CN103967019 A CN 103967019A CN 201410231577 A CN201410231577 A CN 201410231577A CN 103967019 A CN103967019 A CN 103967019A
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Abstract
The invention discloses a fish-bellied beam device for supporting a foundation ditch. The long sides of the foundation ditch are provided with two or more fish-bellied beam devices; an opposite support is arranged between every two adjacent fish-bellied beam devices between the two longs to support the foundation ditch together; the opposite support generates prestress by adjusting a lifting jack; and the fish-bellied beam devices generate prestress by adjusting the tightness of a stranded wire. The support structure integrally occupies small space, is convenient for excavating the foundation ditch, and enhances the efficiency; and meanwhile, most components of the support structure are standard-sized profiles which are connected through bolt parts, and thus, are very convenient to install and demount and have high reutilization rate, thereby integrally lowering the support cost of the foundation ditch.
Description
Technical field
The invention belongs to field of civil engineering, be specifically related to the prestressing force supporting and protection structure of foundation ditch.
Background technology
The mode that existing pattern foundation pit supporting structure mode mostly adopts is, in the surrounding of foundation ditch, reinforced concrete fortifield village purlin is set, arrange netted steel pipe support enclosing in purlin week again, when it is not enough, steel pipe consumption is large, install, remove trouble, and it is large to take up space, and is unfavorable for soil excavation in foundation ditch, can not apply prestressing force to foundation pit side-wall well, support strength is low, conventionally can only increase support force by the density that increases steel pipe layout; And when different pattern foundation pit supporting structure, need use the steel pipe of different size, steel pipe repeat usage is low, causes the costly of pattern foundation pit supporting structure.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency existing for prior art, and provide a kind of and install, remove conveniently, occupy foundation ditch space little, the fish belly sill device of the pattern foundation pit supporting structure that supporting intensity is high and the supporting section bar rate of recovery is high.
For realizing the present invention's object, be achieved by the following technical solutions: a kind of fish belly sill device for pattern foundation pit supporting structure, include 2 the second angle brace seats, 5 web member supports between two the second angle brace seats, and be fixed between two the second angle brace seats and to each web member support and apply prestressed steel strand.
The second described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel i that is positioned at hypotenuse is welded with a H shaped steel h in 1/3 position on the edge of a wing outwardly, and the both ends of H shaped steel h and H shaped steel i are all welded with junction plate; H shaped steel i is positioned at H shaped steel h mono-side and on the edge of a wing, offers 2 group of two connecting hole of arranging four row outwardly, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel i is positioned at H shaped steel h opposite side and offers one group of two connecting hole of arranging 11 row and one group two and arranging six row outwardly on the edge of a wing; Between the web of H shaped steel i inner side and the edge of a wing, be welded with multiple reinforcing gussets, reinforce gusset and be positioned at the position at H shaped steel h two ends, and position between two adjacent groups connecting hole; The H shaped steel j end that is positioned at right-angle side is welded with junction plate, and the H shaped steel j edge of a wing outwardly offers six group of two connecting hole of arranging two row; The end of H shaped steel k and the edge of a wing vertical welding of H shaped steel j next-door neighbour end that are positioned at another right-angle side, the other end of the k of H shaped steel and H shaped steel i are away from one end welding of H shaped steel h; The H shaped steel k edge of a wing outwardly offers three group of two connecting hole of arranging two row; H shaped steel k is welded with a guide plate passing for steel strand near the end position of H shaped steel i, and H shaped steel i is welded with a steel strand fixed head near one end of H shaped steel k; Between H shaped steel i, H shaped steel j and H shaped steel k, be welded with a junction steel plate, the position that junction steel plate is positioned at the second angle brace seat middle part is provided with two steel strand anchorages; Described steel strand anchorage applies pulling force to steel strand, makes each web member support produce prestressing force to the cement mixing pile metope of foundation pit side-wall, ensures that body of wall does not firmly tilt or collapses.Described steel strand end is divided into two strands through after guide plate, and one is strained by ground tackle, and another strand is fixed on steel strand fixed head after ground tackle tension.
Described web member support includes lower-cord beam, with lower-cord beam web member connected vertically, be connected the oblique fulcrum bar of web member and lower-cord beam, also comprise and the extension rod of the coaxial adjustment web member length being connected of web member, and be connected to the steel strand positioning head of extension rod end; Each lower-cord beam end connects successively, and the lower-cord beam that is positioned at outermost end is connected with the second angle brace seat end; Described extension rod can be adjusted the effective length of web member as required, thereby makes steel strand have the radian needing, and the corner dimension between steel strand and web member is suitable.
Described each the second angle brace seat is fixedly connected with capping beam by rebar connector with lower-cord beam; The below of described each web member is also supported with angle-table bracket, angle-table bracket and the fixing welding of H shaped steel being inserted in cement mixing pile; Described steel strand coordinate pulling force that web member support produces on horizontal plane, and angle-table bracket can not produce web member support to teetertotter or be loosening.
In 5 described web member supports, be positioned at middle web member support and there is the longest web member and extension rod, be positioned at outermost web member support and there is the shortest web member and extension rod.
Described steel strand are successively on the steel strand positioning head of each web member bracket end, and the two ends of steel strand are passed the guide plate on the second angle brace seat and are fixed on steel strand fixed head and steel strand anchorage.
Described steel strand form symmetrical six parts between two the second angle brace seats and 5 web member supports, be followed successively by symmetrical line a, line b and line c from middle toward both sides, between line a and extension rod, form the angle of 82 degree, between line b and extension rod, form the angle of 67 degree, between line c and extension rod, form the angle of 54 degree; Described steel strand coordinate web member support to be set to above-mentioned angle, have ensured enough prestressing force on the one hand, make on the other hand web member support entirety occupy less space, are beneficial to the excavation of excavator.
Two the second angle brace seats and 5 web member support supported underneath have and the crossbeam that encloses purlin shaped steel and be arranged in parallel, and described crossbeam is connected on cement mixing pile; Between the extension rod of three web member supports at middle part, be also connected with reinforcement; The extension rod that sets up both sides after steel strand positioning head due to steel strand can be bending in opposite directions, and described reinforcement makes extension rod not produce deformation, keeps lastingly stable support force.
Compared with prior art, the invention has the beneficial effects as follows: by dividing at the long leg of foundation ditch, two or more fish belly sill devices are set, and the position between two adjacent fish belly sill devices arranges support between two long limits, jointly foundation ditch is played to support action, described fish belly sill device produces prestressing force by the elasticity of adjusting steel strand.The space that this kind of supporting and protection structure takies is on the whole little, is convenient to the excavation of foundation ditch, raises the efficiency, meanwhile, the member of supporting and protection structure is mostly standard-sized section bar, connects by bolt part, install, remove all very convenient, repeatedly recycling rate of waterused is high, has reduced on the whole the cost of pattern foundation pit supporting structure.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of foundation pit support system.
Fig. 2 is arranged on the structural representation of the fish belly sill device on the long limit of foundation ditch.
Fig. 3 is the structural representation of the second angle brace seat.
Fig. 4 is the structural representation of web member support.
Fig. 5 is the mounting structure schematic diagram of web member support.
Fig. 6 is arranged on the structural representation to support arrangement between the long limit of foundation ditch two.
Fig. 7 is the syndeton schematic diagram that encloses purlin shaped steel and capping beam.
Fig. 8 is the structural representation of rebar connector.
Detailed description of the invention
With reference to the accompanying drawings the specific embodiment of the present invention is made a detailed explanation below.
According to shown in Fig. 1 to Fig. 8, a kind of fish belly sill device for pattern foundation pit supporting structure described in the present embodiment, include 2 the second angle brace seats 22,5 web member supports 17 between two the second angle brace seats, and be fixed between two the second angle brace seats and to each web member support and apply prestressed steel strand 50.
The second described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel i221 that is positioned at hypotenuse is welded with a H shaped steel h222 in 1/3 position on the edge of a wing outwardly, and the both ends of H shaped steel h and H shaped steel i are all welded with junction plate; H shaped steel i is positioned at H shaped steel h mono-side and on the edge of a wing, offers 2 group of two connecting hole of arranging four row outwardly, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel i is positioned at H shaped steel h opposite side and offers one group of two connecting hole of arranging 11 row and one group two and arranging six row outwardly on the edge of a wing; Between the web of H shaped steel i inner side and the edge of a wing, be welded with multiple reinforcing gussets, reinforce gusset and be positioned at the position at H shaped steel h two ends, and position between two adjacent groups connecting hole; The H shaped steel j223 end that is positioned at right-angle side is welded with junction plate, and the H shaped steel j edge of a wing outwardly offers six group of two connecting hole of arranging two row; The end of H shaped steel k224 and the edge of a wing vertical welding of H shaped steel j next-door neighbour end that are positioned at another right-angle side, the other end of the k of H shaped steel and H shaped steel i are away from one end welding of H shaped steel h; The H shaped steel k edge of a wing outwardly offers three group of two connecting hole of arranging two row; H shaped steel k is welded with a guide plate 225 passing for steel strand near the end position of H shaped steel i, and H shaped steel i is welded with a steel strand fixed head 226 near one end of H shaped steel k; Between H shaped steel i, H shaped steel j and H shaped steel k, be welded with a junction steel plate 227, the position that junction steel plate is positioned at the second angle brace seat middle part is provided with two steel strand anchorages 228.
Described web member support 17 includes lower-cord beam 171, with lower-cord beam web member 173 connected vertically, be connected the oblique fulcrum bar 172 of web member and lower-cord beam, also comprise and the extension rod 174 of the coaxial adjustment web member length being connected of web member, and be connected to the steel strand positioning head 175 of extension rod end; Each lower-cord beam end connects successively, and the lower-cord beam that is positioned at outermost end is connected with the second angle brace seat end.
Described each the second angle brace seat is fixedly connected with capping beam by rebar connector with lower-cord beam; The below of described each web member is also supported with angle-table bracket 170, angle-table bracket and the fixing welding of H shaped steel being inserted in cement mixing pile 40.
In 5 described web member supports, be positioned at middle web member support and there is the longest web member and extension rod, be positioned at outermost web member support and there is the shortest web member and extension rod.
Described steel strand are successively on the steel strand positioning head of each web member bracket end, and the two ends of steel strand are passed the guide plate on the second angle brace seat and are fixed on steel strand fixed head and steel strand anchorage.
Described steel strand form symmetrical six parts between two the second angle brace seats and 5 web member supports, be followed successively by symmetrical line a501, line b502 and line c503 from middle toward both sides, between line a and extension rod, form the angle of 82 degree, between line b and extension rod, form the angle of 67 degree, between line c and extension rod, form the angle of 54 degree.
Two the second angle brace seats and 5 web member support supported underneath have and the crossbeam that encloses purlin shaped steel and be arranged in parallel, and described crossbeam is connected on cement mixing pile; Between the extension rod of three web member supports at middle part, be also connected with reinforcement.
Foundation ditch periphery is squeezed into cement mixing pile 40 downwards, and the capping beam of reinforced concrete structure is built on cement mixing pile top, in capping beam, is connected with in week and encloses purlin shaped steel 10, encloses purlin shaped steel and is fixedly connected with capping beam by rebar connector 70.
Described rebar connector includes L shaped reinforcing bar 701, reinforcing bar in minor face and the capping beam of L shaped reinforcing bar is welded and fixed, end, the long limit coaxial welding of L shaped reinforcing bar has the female reinforcing bar connector 702 that can attachment screw of tool, thereby is connected with reinforcing bar connector and will encloses purlin shaped steel and capping beam is fixed through the screw 703 that encloses purlin shaped steel.
On the long limit of foundation ditch, be provided with two or more fish belly sill devices, between two long limits of foundation ditch, be provided with at least one group to support arrangement, to support arrangement, between two adjacent groups fish belly sill device, every group includes two Eight characters supports and is connected to two one group of struts between Eight characters support support arrangement.
The support of the described Eight characters includes two the second angle brace seats 22, a gusseted seat 24 and connects two groups of struts of two the second angle brace seats and gusseted seat; Two described the second angle brace seats are bolted the enclosing between purlin shaped steel of installation site, and the second angle brace seat is connected with capping beam by rebar connector.
Between the gusseted seat of both sides Eight characters support, connect by four struts; Four strut supported underneath have the crossbeam vertical with strut, and crossbeam two ends are connected to two cement mixing pile tops.
Claims (1)
1. the fish belly sill device for pattern foundation pit supporting structure, it is characterized in that: include 2 the second angle brace seats, 5 web member supports between two the second angle brace seats, and be fixed between two the second angle brace seats and to each web member support and apply prestressed steel strand;
The second described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel i that is positioned at hypotenuse is welded with a H shaped steel h in 1/3 position on the edge of a wing outwardly, and the both ends of H shaped steel h and H shaped steel i are all welded with junction plate; H shaped steel i is positioned at H shaped steel h mono-side and on the edge of a wing, offers 2 group of two connecting hole of arranging four row outwardly, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel i is positioned at H shaped steel h opposite side and offers one group of two connecting hole of arranging 11 row and one group two and arranging six row outwardly on the edge of a wing; Between the web of H shaped steel i inner side and the edge of a wing, be welded with multiple reinforcing gussets, reinforce gusset and be positioned at the position at H shaped steel h two ends, and position between two adjacent groups connecting hole; The H shaped steel j end that is positioned at right-angle side is welded with junction plate, and the H shaped steel j edge of a wing outwardly offers six group of two connecting hole of arranging two row; The end of H shaped steel k and the edge of a wing vertical welding of H shaped steel j next-door neighbour end that are positioned at another right-angle side, the other end of the k of H shaped steel and H shaped steel i are away from one end welding of H shaped steel h; The H shaped steel k edge of a wing outwardly offers three group of two connecting hole of arranging two row; H shaped steel k is welded with a guide plate passing for steel strand near the end position of H shaped steel i, and H shaped steel i is welded with a steel strand fixed head near one end of H shaped steel k; Between H shaped steel i, H shaped steel j and H shaped steel k, be welded with a junction steel plate, the position that junction steel plate is positioned at the second angle brace seat middle part is provided with two steel strand anchorages;
Described web member support includes lower-cord beam, with lower-cord beam web member connected vertically, be connected the oblique fulcrum bar of web member and lower-cord beam, also comprise and the extension rod of the coaxial adjustment web member length being connected of web member, and be connected to the steel strand positioning head of extension rod end; Each lower-cord beam end connects successively, and the lower-cord beam that is positioned at outermost end is connected with the second angle brace seat end;
Described each the second angle brace seat is fixedly connected with capping beam by rebar connector with lower-cord beam; The below of described each web member is also supported with angle-table bracket, angle-table bracket and the fixing welding of H shaped steel being inserted in cement mixing pile;
In 5 described web member supports, be positioned at middle web member support and there is the longest web member and extension rod, be positioned at outermost web member support and there is the shortest web member and extension rod;
Described steel strand are successively on the steel strand positioning head of each web member bracket end, and the two ends of steel strand are passed the guide plate on the second angle brace seat and are fixed on steel strand fixed head and steel strand anchorage;
Described steel strand form symmetrical six parts between two the second angle brace seats and 5 web member supports, be followed successively by symmetrical line a, line b and line c from middle toward both sides, between line a and extension rod, form the angle of 82 degree, between line b and extension rod, form the angle of 67 degree, between line c and extension rod, form the angle of 54 degree;
Two the second angle brace seats and 5 web member support supported underneath have and the crossbeam that encloses purlin shaped steel and be arranged in parallel, and described crossbeam is connected on cement mixing pile; Between the extension rod of three web member supports at middle part, be also connected with reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410231577.3A CN103967019A (en) | 2014-05-28 | 2014-05-28 | Fish-bellied beam device for supporting foundation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410231577.3A CN103967019A (en) | 2014-05-28 | 2014-05-28 | Fish-bellied beam device for supporting foundation ditch |
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| Publication Number | Publication Date |
|---|---|
| CN103967019A true CN103967019A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410231577.3A Pending CN103967019A (en) | 2014-05-28 | 2014-05-28 | Fish-bellied beam device for supporting foundation ditch |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544557A (en) * | 2016-01-08 | 2016-05-04 | 上海强劲地基工程股份有限公司 | T-shaped prestress locking device and method for foundation pit support fish belly sill structure |
| CN105569052A (en) * | 2016-01-08 | 2016-05-11 | 上海强劲地基工程股份有限公司 | Locking device and construction method for prestressing force of assembled fish belly sill |
| CN108560563A (en) * | 2018-05-24 | 2018-09-21 | 东南大学 | A kind of deep foundation pit support prestressing force fish belly sill that drag-line can be locked |
| CN108560562A (en) * | 2018-05-24 | 2018-09-21 | 东南大学 | A kind of stay length adjustable deep foundation pit support prestressing force fish belly sill |
| CN108560564A (en) * | 2018-05-24 | 2018-09-21 | 东南大学 | A kind of band tilts the deep foundation pit support prestressing force fish belly sill of strut |
| CN108677964A (en) * | 2018-05-24 | 2018-10-19 | 东南大学 | A kind of prestressing force fish belly sill of the deep foundation pit support with anti-rotation rope |
| CN111764405A (en) * | 2020-08-05 | 2020-10-13 | 上海巨鲲科技有限公司 | Combined foundation pit supporting beam string |
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| JP2013072264A (en) * | 2011-09-29 | 2013-04-22 | Gecoss Corp | Beam retaining rotary piece |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544557A (en) * | 2016-01-08 | 2016-05-04 | 上海强劲地基工程股份有限公司 | T-shaped prestress locking device and method for foundation pit support fish belly sill structure |
| CN105569052A (en) * | 2016-01-08 | 2016-05-11 | 上海强劲地基工程股份有限公司 | Locking device and construction method for prestressing force of assembled fish belly sill |
| CN108560563A (en) * | 2018-05-24 | 2018-09-21 | 东南大学 | A kind of deep foundation pit support prestressing force fish belly sill that drag-line can be locked |
| CN108560562A (en) * | 2018-05-24 | 2018-09-21 | 东南大学 | A kind of stay length adjustable deep foundation pit support prestressing force fish belly sill |
| CN108560564A (en) * | 2018-05-24 | 2018-09-21 | 东南大学 | A kind of band tilts the deep foundation pit support prestressing force fish belly sill of strut |
| CN108677964A (en) * | 2018-05-24 | 2018-10-19 | 东南大学 | A kind of prestressing force fish belly sill of the deep foundation pit support with anti-rotation rope |
| CN111764405A (en) * | 2020-08-05 | 2020-10-13 | 上海巨鲲科技有限公司 | Combined foundation pit supporting beam string |
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Application publication date: 20140806 |