CN102182141B - Longitudinal non-shearing-resistant T-shaped anti-pulling connecting piece and construction method thereof - Google Patents
Longitudinal non-shearing-resistant T-shaped anti-pulling connecting piece and construction method thereof Download PDFInfo
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- CN102182141B CN102182141B CN201110065691XA CN201110065691A CN102182141B CN 102182141 B CN102182141 B CN 102182141B CN 201110065691X A CN201110065691X A CN 201110065691XA CN 201110065691 A CN201110065691 A CN 201110065691A CN 102182141 B CN102182141 B CN 102182141B
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Abstract
The invention discloses a longitudinal non-shearing-resistant T-shaped anti-pulling connecting piece and a construction method thereof, relates to the connecting piece applied in bridge structures and building structures, and belongs to the technical field of structural engineering. The connecting piece is used for connecting a steel beam with a concrete plate, the connecting piece comprises a web plate of the connecting piece and a top plate of the connecting piece, and the web plate of the connecting piece is fixedly connected with the top plate of the connecting piece for forming the T-shaped connecting piece; and foam plastic is stuck on two sides of the web plate of the connecting piece, and the connecting piece is fixedly connected on an upper flange plate of the steel beam. The connecting piece is adopted in a negative bending moment region of a steel-concrete continuous composite beam bridge and a steel-concrete composite framework structure, thereby effectively reducing the tension stress of the concrete plate in the negative bending moment region, improving the leading-in degree of longitudinal prestressing force of the concrete plate, and improving the long-term performance and the durability of the concrete plate; simultaneously, the connecting piece has reliable anti-pulling capability and can resist the lifting role of the concrete plate relative to the steel beam. The connecting piece is convenient to take material, simple in structure, fast to construct and reasonable in stress, and has good technical and economic benefits.
Description
Technical field
The present invention relates to a kind of connector that is applied to bridge construction and building structure, the connector of particularly a kind of Prestressed Steel and Concrete Composite Beam bridge and steel-concrete composite frame structure hogging moment area belongs to technical field of structural engineering.
Background technology
Be illustrated in figure 1 as the Prestressed Steel and Concrete Composite Beam bridge, shown in Figure 2 is the steel-concrete group frame, and the steel-concrete composite beam that wherein adopts is formed by girder steel and concrete slab, and both adopt peg connector 6 to link to each other usually, and are as shown in Figure 3.The main effect of peg connector 6 comprises: 1. shearing resistance: bear the interface longitudinal shear between girder steel and the concrete slab; Restriction interface between the two vertically is free to slide; Thereby guarantee girder steel and concrete slab cooperative transformation, co-operation; Give full play to compound action, improve rigidity of section and supporting capacity; 2. resistance to plucking: the vertical separation that the opposing concrete slab causes because of whole buckling and partial lateral bending and starting.
For the compound beam in positive bending moment district, girder steel and concrete compound action can make the concrete slab pressurized, and the girder steel major part is drawn, and give full play to girder steel and concrete material property separately, significantly improve rigidity of section and bearing capacity, reduce structure height.
Yet for the compound beam of hogging moment area, girder steel and concrete compound action can make concrete slab drawn, and cause its more easy of crack, and girder steel bottom flange compressive stress increases, and cause its unstability more easily.Tensile stress in the concrete slab that shrinkage and creep and temperature effect produced can produce adverse influence to the long-term behaviour and the durability of concrete slab owing to the constraint of peg connector can not get effective release.In addition; In continuous composite beam bridge; In order to reduce the tensile stress in the concrete slab, avoid its cracking, need in compound beam hogging moment area concrete slab, arrange a large amount of longitudinal prestressing strands; But the prestressing force that applies can be passed to the girder steel top flange through the peg connector, thereby reduces the efficient of longitudinal prestressing greatly.In sum; Hogging moment area at continuous composite beam bridge and steel-concrete composite frame structure; Adopt the peg connector to produce adverse influence to structure stress; If but do not adopt the peg connector to make steel and concrete that compound action not take place, though can improve the problems referred to above, the vertically pulling-resistant problem of concrete slab could effectively be solved.Therefore, Prestressed Steel and Concrete Composite Beam bridge and steel-concrete composite frame structure still lack at present and a kind ofly are used for a hogging moment area resistance to plucking but the vertical novel connector of not shearing resistance, thereby have restricted the promotion and application of these two kinds of form of structure.
Summary of the invention
The object of the present invention is to provide a kind of vertically T type anti-pulling connector of not shearing resistance; Exist in the solution prior art; At the hogging moment area of continuous composite beam bridge and steel-concrete composite frame structure, the technical problem that adopts the peg connector to have a negative impact to structure stress.Vertically not shearing resistance T type anti-pulling connector of the present invention can effectively reduce the tensile stress of hogging moment area concrete slab; Improve the longitudinal prestressing efficient of concrete slab; Improve the long-term behaviour and the durability of concrete slab, have resistance to plucking simultaneously and do in order to the vertical separation of opposing concrete slab and start effect, simple structure; Easy construction, economic performance is more excellent.
Technical scheme of the present invention is following:
A kind of vertically not shearing resistance T type anti-pulling connector of the present invention is used to connect girder steel and concrete slab, and described girder steel is made up of top flange plate 1, web 2 and base plate 3, and described concrete slab is made up of reinforcing bar in the plate 4 and concrete 5; It is characterized in that: described connector comprises connector web 7, connector top board 8, and connector web 7 and connector top board 8 be affixed to become the T type, is pasted with foamed plastics 9 in connector web 7 both sides, and described connector is fixed on the top flange plate 1.The top of described connector top board 8 is pasted with grooved foamed plastics 10.Described connector web 7 is the steel plate of 6mm.
The vertically job practices of not shearing resistance T type anti-pulling connector of the present invention is characterized in that concrete steps are following:
A. be welded to connect part web 7 and connector top board 8 in factory, form T type connector;
B. in factory T type connector is welded in girder steel top flange plate 1;
C. behind the on-the-spot installation in position of girder steel in T type connector side foamed plastic pasting 9 or paste grooved foamed plastics 10 simultaneously at T type connector top;
D. colligation concrete slab reinforcing bar 4;
E. fluid concrete 5.
The present invention has following beneficial effect with respect to prior art:
(1) owing to vertically can be free to slide between concrete slab and the girder steel; Can effectively discharge the tensile stress in the Prestressed Steel and Concrete Composite Beam hogging moment area concrete slab; Can be in continuous composite beam bridge less with the purpose of even not using the concrete slab longitudinal prestressing, the efficient of longitudinal prestressing is compared and is adopted the compound beam of peg connector also to increase significantly; (2) can effectively reduce tensile stress in the concrete slab that concrete shrinkage and creep and temperature effect cause, improve the long-term stress performance of concrete slab, improve the durability of concrete slab.(3) this connector simple structure is drawn materials conveniently, and connector web 7 and top board 8 are in factory presets, and on-the-spot needs foamed plastic pasting, and construction is quick, and economic performance is more excellent; (4) this connector has kept the effect of traditional peg connector resistance to plucking, is highly resistant to concrete slab crooked and laterally vertical separation of causing of uneven loading action and starting because of whole buckling, partial lateral; (5) this connector vertically can not shearing resistance along beam, but laterally still has enough shear resistances, the laterally slippage relatively between restriction concrete slab and the girder steel; (6) compare the hogging moment area compound section of adopting the peg connector, because compound action does not take place for concrete slab and girder steel, girder steel base plate compressive stress can be significantly reduced, and helps improving the local stability of girder steel base plate.
Description of drawings
Fig. 1 adopts different connector type sketch mapes for compound beam zones of different in the Prestressed Steel and Concrete Composite Beam bridge.
Fig. 2 adopts different connector type sketch mapes for compound beam zones of different in the steel-concrete composite frame structure.
Fig. 3 adopts the compound beam cross-sectional drawing of traditional peg connector for the positive bending moment district.
Fig. 4 adopts the vertically compound beam cross-sectional drawing of not shearing resistance T type anti-pulling connector for hogging moment area.
Fig. 5 does not establish the compound beam skiagraph of vertical not shearing resistance T type anti-pulling connector of foamed plastics for hogging moment area adopts the top.
Fig. 6 establishes the compound beam skiagraph of vertical not shearing resistance T type anti-pulling connector of foamed plastics for hogging moment area adopts the top.
Among the figure: the 1-top flange plate; The 2-web; The 3-base plate; 4-concrete slab reinforcing bar; The 5-concrete; 6-peg connector; 7-connector web; 8-connector top board; The 9-foamed plastics; 10-grooved foamed plastics.
The specific embodiment
Below in conjunction with accompanying drawing, structure of the present invention, work progress are further described as follows.
As shown in Figure 4, girder steel is made up of top flange plate 1, web 2 and base plate 3, and concrete slab is made up of concrete slab reinforcing bar 4 and concrete 5.Vertically not shearing resistance T type anti-pulling connector of the present invention; In order to connect girder steel and concrete slab; Form by connector web 7, connector top board 8; Be pasted with foamed plastics 9 (as shown in Figure 5) in connector web 7 both sides; Connector web 7 should approach (recommending to adopt the 6mm steel plate in the actual engineering) as far as possible to reduce its out-of-plane bending rigidity as far as possible, and its width should take all factors into consideration the concrete slab uplift force and the interior longitudinal reinforcement spacing of plate confirms that connector top board 8 should have enough rigidity to give full play to the resistance to plucking effect of connector.
When if slippage is big relatively between concrete slab and the girder steel, when connector web 7 only depends on self deformity out of plane ability can't satisfy the slippage demand, can paste grooved foamed plastics 10 (as shown in Figure 6) at connector top board 8.This connector since longitudinal rigidity very a little less than, possess shear resistance hardly, make between concrete slab and the girder steel and can vertically be free to slide, but have stronger resistance to plucking and horizontal shear resistance simultaneously, make concrete slab and girder steel still have stronger globality.
Job practices of the present invention is:
Vertically not shearing resistance T type anti-pulling connector of the present invention; Its job practices is following: be welded to connect part web 7 and connector top board 8 by factory, form T type connector, T type connector is welded on the top flange plate 1 of girder steel again; After the scene of being transported to installs then; The both sides foamed plastic pasting 9 of connector web 7 or according to relative slippage demand is pasted grooved foamed plastics 10, last colligation concrete slab reinforcing bar 4 simultaneously on the connector top board; Fluid concrete 5, thus form like Fig. 4～vertically not shearing resistance T type anti-pulling connector shown in Figure 6.
The invention provides a kind of vertically not shearing resistance T type anti-pulling connector, can be used for the hogging moment area of Prestressed Steel and Concrete Composite Beam.This connector can effectively reduce the tensile stress of hogging moment area concrete slab; Improve the longitudinal prestressing importing degree of concrete slab, improve the long-term behaviour and the durability of concrete slab, have the resistance to plucking ability simultaneously; Can resist the vertical separation of concrete slab and start effect; Simple structure, easy construction, economic performance is more excellent.
Claims (5)
1. a vertical not shearing resistance T type anti-pulling connector is used to connect girder steel and concrete slab, and described girder steel is made up of top flange plate (1), web (2) and base plate (3), and described concrete slab is made up of concrete slab reinforcing bar (4) and concrete (5); It is characterized in that: described connector comprises connector web (7), connector top board (8); Connector web (7) and connector top board (8) be affixed to become the T type; Be pasted with foamed plastics (9) in connector web (7) both sides; Described connector is fixed on the top flange plate (1), and the length direction of connector web (7) is along the beam horizontally set.
2. vertically not shearing resistance T type anti-pulling connector according to claim 1 is characterized in that the top of described connector top board (8) is pasted with grooved foamed plastics (10).
3. vertically not shearing resistance T type anti-pulling connector according to claim 1 and 2 is characterized in that described connector web (7) is the steel plate of 6mm.
4. the vertically job practices of not shearing resistance T type anti-pulling connector according to claim 1 is characterized in that concrete steps are following:
A. be welded to connect part web (7) and connector top board (8) in factory, form T type connector;
B. in factory T type connector is welded in top flange plate (1);
C. behind the on-the-spot installation in position of girder steel in T type connector side foamed plastic pasting (9);
D. colligation concrete slab reinforcing bar (4);
E. fluid concrete (5).
5. the vertically job practices of not shearing resistance T type anti-pulling connector according to claim 2 is characterized in that concrete steps are following:
A. be welded to connect part web (7) and connector top board (8) in factory, form T type connector;
B. in factory T type connector is welded in top flange plate (1);
C. paste grooved foamed plastics (10) behind the on-the-spot installation in position of girder steel in T type connector side foamed plastic pasting (9) and at T type connector top;
D. colligation concrete slab reinforcing bar (4);
E. fluid concrete (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110065691XA CN102182141B (en) | 2011-03-18 | 2011-03-18 | Longitudinal non-shearing-resistant T-shaped anti-pulling connecting piece and construction method thereof |
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| CN201110065691XA CN102182141B (en) | 2011-03-18 | 2011-03-18 | Longitudinal non-shearing-resistant T-shaped anti-pulling connecting piece and construction method thereof |
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| CN102182141A CN102182141A (en) | 2011-09-14 |
| CN102182141B true CN102182141B (en) | 2012-05-23 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691256A (en) * | 2012-04-13 | 2012-09-26 | 清华大学 | Composite channel steel-concrete beam employing novel shear connector and construction method |
| CN103437474A (en) * | 2013-09-11 | 2013-12-11 | 南京工业大学 | Novel stirrup shearing connector as well as manufacturing and installing methods thereof |
| CN103422603A (en) * | 2013-09-11 | 2013-12-04 | 南京工业大学 | Spiral stirrup shearing force connecting piece and manufacturing and installation methods |
| CN103741584A (en) * | 2013-12-31 | 2014-04-23 | 清华大学 | Lower flange anti-pulling composite box girder with corrugated steel webs and construction method |
| CN105297936A (en) * | 2015-10-27 | 2016-02-03 | 同济大学 | Beam and slab connecting structure for self-restoring structures |
| CN107620258B (en) * | 2017-11-02 | 2023-08-22 | 中交公路长大桥建设国家工程研究中心有限公司 | Adhesive shear connector and construction method thereof |
| CN107806187A (en) * | 2017-11-29 | 2018-03-16 | 华南理工大学 | A kind of resistance to plucking not shearing resistance WELDING STUDS |
| CN110158447A (en) * | 2019-05-23 | 2019-08-23 | 中铁大桥科学研究院有限公司 | A kind of combination beam and preparation method thereof |
| CN110409288A (en) * | 2019-07-03 | 2019-11-05 | 清华大学 | The shear connector and construction method of unidirectional slip |
| CN114892870B (en) * | 2022-06-14 | 2023-08-22 | 河南黄国钢结构有限公司 | Steel and concrete assembled structure and forming device thereof |
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| CN2661809Y (en) * | 2003-11-11 | 2004-12-08 | 李勇 | nternal force adjustable prestressed steel-concrete combination beam |
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| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3125930B2 (en) * | 1990-05-29 | 2001-01-22 | 岡部株式会社 | Pipe stud |
| AU2002951787A0 (en) * | 2002-10-02 | 2002-10-17 | University Of Western Sydney | A composite beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2661809Y (en) * | 2003-11-11 | 2004-12-08 | 李勇 | nternal force adjustable prestressed steel-concrete combination beam |
| CN101328753A (en) * | 2008-07-24 | 2008-12-24 | 同济大学 | Fiber reinforcement composite material - concrete combination beam |
| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
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