CN201933398U - Longitudinal slidable steel-concrete anti-lifting connecting piece - Google Patents
Longitudinal slidable steel-concrete anti-lifting connecting piece Download PDFInfo
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- CN201933398U CN201933398U CN2010206716046U CN201020671604U CN201933398U CN 201933398 U CN201933398 U CN 201933398U CN 2010206716046 U CN2010206716046 U CN 2010206716046U CN 201020671604 U CN201020671604 U CN 201020671604U CN 201933398 U CN201933398 U CN 201933398U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000008676 import Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 12
- 239000002131 composite material Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
A longitudinal slidable steel-concrete anti-lifting connecting piece is applied to highway bridges and railroad bridges and belongs to the technical field of bridge structures. The connecting piece is used for connecting a steel girder and a concrete bridge deck and consists of channel steel and bolts, wherein the channel steel is embedded in the concrete bridge deck; the channel steel and a top flange plate of the steel girder are connected by the bolts; a top flange plate hole of the steel girder penetrated by the bolt is oval-shaped; a long axis is along the longitudinal direction of the bridge; and the bolt can slide longitudinally but not horizontally relative to the top flange plate of the steel girder. The connecting piece is used in the hogging moment area of the steel-concrete continuous combined girder bridge, the tensile stress of the concrete bridge deck in the hogging moment area can be effectively reduced, the longitudinal prestress import degree of the concrete bridge deck is improved, the long-time performance and durability of the concrete bridge deck are improved, and the connecting piece can resist the vertical separating and lifting action of the concrete bridge deck. The connecting piece has the advantages of convenient material drawing, simple structure, quick construction, reasonable stress and excellent technical and economic benefits.
Description
Technical field
The utility model relates to that a kind of longitudinally-slidable steel-concrete that can be applicable to highway bridge and railroad bridge is anti-to start connector, belongs to the bridge construction technical field.
Background technology
Prestressed Steel and Concrete Composite Beam bridge of the prior art is made up of girder steel and concrete slab, and both adopt peg connector 6 to link to each other along the beam total length usually, as shown in Figure 1.The main effect of peg connector 6 (as shown in Figure 2) comprising: 1. antiskid moves: 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. anti-starting: 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, steel and concrete compound action can make the concrete slab pressurized, and the most of tension of girder steel is given full play to steel and concrete material property separately, significantly improves rigidity of section and bearing capacity, reduces structure height.
Yet for the compound beam of hogging moment area, steel and concrete compound action can make the concrete slab tension, cause its easier cracking, and girder steel bottom flange compressive stress increases, and causes its easier unstability.In order to reduce the tensile stress in the concrete slab, avoid its cracking, need in compound beam hogging moment area bridge deck, arrange a large amount of longitudinal prestressing strands, but the prestressing force that applies can be passed to the girder steel top flange by the peg connector, thereby reduce the importing degree of longitudinal prestressing greatly, 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 sum, hogging moment area at continuous composite beam, 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 vertical anti-of concrete slab separates and starts problem and can't effectively be solved.Therefore, the Prestressed Steel and Concrete Composite Beam bridge still lacks at present and a kind ofly is used for that hogging moment area is only anti-to start the novel connector that not antiskid moves, thereby has restricted the promotion and application of continuous composite beam bridge.
The utility model content
The purpose of this utility model provides that a kind of longitudinally-slidable steel-concrete is anti-to start connector, can be used for the hogging moment area (as shown in Figure 3) of Prestressed Steel and Concrete Composite Beam bridge.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, simultaneously can resist the vertical separation of concrete slab and start effect, simple structure, easy construction, economic performance is more excellent.
The technical solution of the utility model following (as shown in Figure 4 and Figure 5):
The anti-connector that starts of a kind of longitudinally-slidable steel-concrete, in order to connect girder steel and concrete slab at hogging moment area, 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 bridge deck reinforcing bar 4 and concrete 5; It is characterized in that: longitudinally-slidable steel-concrete is anti-to be started connector and is made up of U-steel 7 and bolt 8; Described U-steel 7 is embedded in the concrete slab in advance, and described bolt 8 passes U-steel 7 and described top flange plate 1, U-steel 7 and described top flange plate 1 are coupled together, and described bolt 8 can vertically move with respect to described top flange plate 1.
Described upper flange 1 is provided with hole 9, the major axis in hole 9 along vertical bridge to, described bolt 8 passes hole 9, and can longitudinal sliding motion with respect to described top flange plate 1, but can not laterally slide.
Described hole 9 is oval.
The transverse width in described hole 9 is screw diameter+2mm.
The longitudinal length in described hole 9 is 2～3 times of screw diameter.
The utility model has the following advantages 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, thereby reach the purpose that few usefulness is not even used the bridge deck longitudinal prestressing, the importing degree 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 bridge deck, improve the durability of bridge deck.(3) U-steel of this connector employing and bolt are drawn materials conveniently, and simple structure is constructed fast simultaneously, and economic performance is more excellent; (4) this connector has kept the effect that the anti-concrete slab of traditional peg connector starts, and is highly resistant to the vertical separation that concrete slab causes because of whole buckling and partial lateral bending and starts; (5) 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 is that the Prestressed Steel and Concrete Composite Beam connector of prior art is arranged schematic diagram.
Fig. 2 is for adopting the compound beam schematic cross-sectional view of traditional peg connector.
Fig. 3 is different connector type schematic diagrames for the Prestressed Steel and Concrete Composite Beam zones of different adopts.
Fig. 4 is the anti-constructional drawing that starts connector of the longitudinally-slidable steel-concrete of the utility model.
Fig. 5 starts the compound beam cross-sectional drawing that connector is applied to hogging moment area for longitudinally-slidable steel-concrete of the present utility model is anti-.
Fig. 6 starts connector for longitudinally-slidable steel-concrete of the present utility model is anti-and is applied to hogging moment area girder steel top flange plate vertical view.
Among the figure: 1-girder steel top flange plate; The 2-steel beam web plate; 3-girder steel base plate; 4-bridge deck reinforcing bar; The 5-bridge deck concrete; 6-peg connector; The 7-U-steel; The 8-bolt; The oval bolt hole in 9-girder steel top flange.
The specific embodiment
Below in conjunction with accompanying drawing, structure of the present utility model, work progress are further described.
As shown in Figure 4 and Figure 5, girder steel is made up of top flange plate 1, web 2 and base plate 3, and concrete slab is made up of reinforcing bar in the plate 4 and concrete 5.The connector that the utility model provides is in order to connect girder steel and concrete slab, form by U-steel 7 and bolt 8, described U-steel 7 is embedded in the concrete slab in advance, and described bolt 8 passes U-steel 7 and girder steel top flange plate 1, and U-steel 7 and girder steel top flange plate 1 are coupled together.The girder steel top flange plate hole 9 that bolt 7 passes be shaped as ellipse (as shown in Figure 6), major axis along vertical bridge to, but bolt but can not laterally slide with respect to the longitudinal sliding motion of girder steel top flange plate.
The utility model provides a kind of longitudinally-slidable steel-concrete to resist and has started connector, can be used for the hogging moment area of Prestressed Steel and Concrete Composite Beam bridge.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, simultaneously can resist the vertical separation of concrete slab and start effect, simple structure, easy construction, economic performance is more excellent.
Claims (5)
1. the anti-connector that starts of a longitudinally-slidable steel-concrete, in order to connect girder steel and concrete slab at hogging moment area, 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 bridge deck reinforcing bar (4) and concrete (5); It is characterized in that: longitudinally-slidable steel-concrete is anti-to be started connector and is made up of U-steel (7) and bolt (8); Described U-steel (7) is embedded in the concrete slab in advance, described bolt (8) passes U-steel (7) and described top flange plate (1), U-steel (7) and described top flange plate (1) are coupled together, and described bolt (8) can vertically move with respect to described top flange plate (1).
2. connector according to claim 1, it is characterized in that: described upper flange (1) is provided with hole (9), the major axis of hole (9) along vertical bridge to, described bolt (8) passes hole (9), and can longitudinal sliding motion, but can not laterally slide with respect to described top flange plate (1).
3. connector according to claim 2 is characterized in that: described hole (9) are for oval.
4. according to claim 2 or 3 described connectors, it is characterized in that: the transverse width of described hole (9) is screw diameter+2mm.
5. according to claim 2 or 3 described connectors, it is characterized in that: the longitudinal length of described hole (9) is 2～3 times of screw diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206716046U CN201933398U (en) | 2010-12-10 | 2010-12-10 | Longitudinal slidable steel-concrete anti-lifting connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206716046U CN201933398U (en) | 2010-12-10 | 2010-12-10 | Longitudinal slidable steel-concrete anti-lifting connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201933398U true CN201933398U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206716046U Expired - Lifetime CN201933398U (en) | 2010-12-10 | 2010-12-10 | Longitudinal slidable steel-concrete anti-lifting connecting piece |
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| CN (1) | CN201933398U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086629A (en) * | 2010-12-10 | 2011-06-08 | 清华大学 | Longitudinally slidable steel-concrete anti-lifting connecting member and construction method thereof |
| CN104153284A (en) * | 2014-07-31 | 2014-11-19 | 桂林理工大学 | Partial filling type steel box concrete continuous composite girder bridge and construction method thereof |
| CN105350445A (en) * | 2015-09-24 | 2016-02-24 | 中交第二航务工程局有限公司 | Novel efficient assembly-type reinforced concrete composite beam |
| CN107881900A (en) * | 2017-11-09 | 2018-04-06 | 西安科技大学 | A kind of steel reinforced concrete combined bridge |
| CN110469052A (en) * | 2019-08-20 | 2019-11-19 | 北京市政路桥管理养护集团有限公司 | Steel-concrete composite beam connector, steel-concrete composite beam and manufacturing method |
| CN110924303A (en) * | 2019-11-19 | 2020-03-27 | 东北大学 | Steel beam and built-in steel reinforced concrete slab continuous combination beam and construction method |
| CN112761072A (en) * | 2019-11-01 | 2021-05-07 | 陕西建工第六建设集团有限公司 | Construction method of deep foundation pit steel trestle ramp |
-
2010
- 2010-12-10 CN CN2010206716046U patent/CN201933398U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086629A (en) * | 2010-12-10 | 2011-06-08 | 清华大学 | Longitudinally slidable steel-concrete anti-lifting connecting member and construction method thereof |
| CN102086629B (en) * | 2010-12-10 | 2012-05-16 | 清华大学 | Longitudinally slidable steel-concrete anti-lifting connecting member and construction method thereof |
| CN104153284A (en) * | 2014-07-31 | 2014-11-19 | 桂林理工大学 | Partial filling type steel box concrete continuous composite girder bridge and construction method thereof |
| CN105350445A (en) * | 2015-09-24 | 2016-02-24 | 中交第二航务工程局有限公司 | Novel efficient assembly-type reinforced concrete composite beam |
| CN107881900A (en) * | 2017-11-09 | 2018-04-06 | 西安科技大学 | A kind of steel reinforced concrete combined bridge |
| CN110469052A (en) * | 2019-08-20 | 2019-11-19 | 北京市政路桥管理养护集团有限公司 | Steel-concrete composite beam connector, steel-concrete composite beam and manufacturing method |
| CN110469052B (en) * | 2019-08-20 | 2022-03-18 | 北京市政路桥管理养护集团有限公司 | Steel-concrete composite beam connecting piece, steel-concrete composite beam and manufacturing method |
| CN112761072A (en) * | 2019-11-01 | 2021-05-07 | 陕西建工第六建设集团有限公司 | Construction method of deep foundation pit steel trestle ramp |
| CN110924303A (en) * | 2019-11-19 | 2020-03-27 | 东北大学 | Steel beam and built-in steel reinforced concrete slab continuous combination beam and construction method |
| CN110924303B (en) * | 2019-11-19 | 2021-08-10 | 东北大学 | Steel beam and built-in steel reinforced concrete slab continuous combination beam and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110817 Effective date of abandoning: 20120516 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110817 Effective date of abandoning: 20120516 |