CN204185769U - Prestressed concrete cable-stayed bridge back combined cable beam anchorage structure - Google Patents
Prestressed concrete cable-stayed bridge back combined cable beam anchorage structure Download PDFInfo
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- CN204185769U CN204185769U CN201420594878.8U CN201420594878U CN204185769U CN 204185769 U CN204185769 U CN 204185769U CN 201420594878 U CN201420594878 U CN 201420594878U CN 204185769 U CN204185769 U CN 204185769U
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Abstract
Prestressed concrete cable-stayed bridge back combined cable beam anchorage structure, to make stay cable force directly be passed to web center, eliminates Suo Li to the horizontal eccentric bending moment of web.Comprise case beam and one end anchoring suspension cable thereon (40).Described case beam arranges rear pouring concrete anchor block (20) at web (10) top of beam section relevant position, and pre-buried in web (10), rear pouring concrete anchor block (20) prestressed strand (30) is set, rear pouring concrete anchor block (20) and web (10) are connected to form stressed entirety by prestressed strand (30) after rear pouring concrete anchor block (20) end one-end tension; Pre-buried and be fixedly installed combination anchor plate in rear pouring concrete anchor block (20), one end of suspension cable (40) is anchored on combination anchor plate.
Description
Technical field
The utility model belongs to technical field of structural engineering, is particularly a kind ofly applied to the key constructs that prestressed concrete cable-stayed bridge cable beam anchoring form is back combined type anchor block.
Background technology
Prestressed concrete cable-stayed bridge, especially span is at the low-pylon cable-stayed bridge of 100 ~ 300m, due to its superior economy, reasonably structural, good aesthetic features, more and more came into one's own in railroad bridge at home in recent years, and started the construction fever of a low-pylon cable-stayed bridge.The anchoring principal mode of suspension cable and concrete girder has anchor at the bottom of anchoring in roof bolting, case, inclined clapboard anchoring, the both sides anchoring of beam body and beam etc., domestic built or mostly adopt the both sides anchoring of beam body in two rope faces prestressed concrete cable-stayed bridge cable beam anchoring form of building.But, concerning long-span cablestayed bridges, because stay cable force is larger, there is certain eccentric throw in beam body both sides anchor point and girder web plate, make anchorage point stressed very complicated, operation stage Suo Li anchorage point often there is crackle disease, and to be not easily found in operation stage, safely hidden danger brought to bridge operation.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of prestressed concrete cable-stayed bridge back combined cable beam anchorage structure, to make stay cable force directly be passed to web center, eliminates Suo Li to the horizontal eccentric bending moment of web.
It is as follows that the utility model solves the technical scheme that above technical problem adopts:
Prestressed concrete cable-stayed bridge back combined cable beam anchorage structure of the present utility model, comprise case beam and one end anchoring suspension cable thereon, it is characterized in that: described case beam is pouring concrete anchor block after the web top of beam section relevant position is arranged, and pre-buried in web, rear pouring concrete anchor block prestressed strand is set, rear pouring concrete anchor block and web are connected to form stressed entirety by prestressed strand after rear pouring concrete anchor block end one-end tension; Pre-buried and be fixedly installed combination anchor plate in rear pouring concrete anchor block, one end of suspension cable is anchored on combination anchor plate.
The beneficial effects of the utility model are, combined cable beam anchor block is located at back, make suspension cable anchor point and web center in same vertical plane, eliminate the horizontal eccentric bending moment of Suo Li to web, make the power transmission of cable beam anchoring block clear and definite, reasonable stress.
Accompanying drawing explanation
This manual comprises following four width accompanying drawings:
Fig. 1 is the planar configuration figure of the utility model prestressed concrete cable-stayed bridge back combined cable beam anchorage structure;
Fig. 2 is the facade constructional drawing of the utility model prestressed concrete cable-stayed bridge back combined cable beam anchorage structure;
Fig. 3 is the planar configuration figure combining anchor plate in the utility model prestressed concrete cable-stayed bridge back combined cable beam anchorage structure;
Fig. 4 is the sectional view along A-A line in Fig. 2;
Component shown in figure, toponym and corresponding mark: after strengthening steel plate 22, anchor plate 23, anchor before web 10, rear pouring concrete anchor block 20, suspension cable built-in pipe 21, anchor, stiffening rib 24, round end weld nail 25, inclined guy cable stretching space 26, prestressed strand 30, suspension cable 40.
Detailed description of the invention
Below in conjunction with accompanying drawing and exemplifying embodiment, the utility model patent is further illustrated.
See figures.1.and.2, the utility model prestressed concrete cable-stayed bridge back combined cable beam anchorage structure, comprises case beam and one end anchoring suspension cable 40 thereon.Described case beam is pouring concrete anchor block 20 after web 10 top of beam section relevant position is arranged, and pre-buried in web 10, rear pouring concrete anchor block 20 prestressed strand 30 is set, rear pouring concrete anchor block 20 is connected to form stressed entirety with web 10 by prestressed strand 30 after rear pouring concrete anchor block 20 end one-end tension.Pre-buried and be fixedly installed combination anchor plate in rear pouring concrete anchor block 20, one end of suspension cable 40 is anchored on combination anchor plate.Namely after beam section cantilever pouring completes, pouring concrete anchor block 20 after back web 10 correspondence position is built, combination anchor plate should be buried underground during pouring concrete anchor block 20 after building, rear pouring concrete anchor block 20 is connected into beaer with web 10 i.e. beam body by recycling prestressed strand 30, finally installs and stretching oblique drag-line 40.The combined cable beam anchor block be made up of rear pouring concrete anchor block 20 and combination anchor plate is located at back, make suspension cable anchor point and web center in same vertical plane, because this eliminating the horizontal eccentric bending moment of Suo Li to web, make the power transmission of cable beam anchoring block clear and definite, reasonable stress.
Described combination anchor plate can adopt various structures form, and shown in Fig. 3 and Fig. 4 is only one wherein.With reference to Fig. 2 and Fig. 3, described combination anchor plate comprises the suspension cable built-in pipe 21, anchor front reinforcement steel plate 22 and the anchor plate 23 that are welded as a whole, for making power transmission after anchor balanced, be welded with stiffening rib 24 after the uniform anchor of suspension cable built-in pipe 21 hoop between anchor plate 23 and suspension cable built-in pipe 21, the outer wall of suspension cable built-in pipe 21 be welded with longitudinally and round end weldering nail 25 that arc is laid to interval.For the demand in stress concentration phenomenon and inclined guy cable stretching space before reduction anchor, the cross section strengthening steel plate 22 before described anchor is recessed semicircle, before anchor, form recessed semicircle inclined guy cable stretching space 26, the wall strengthening steel plate 22 before anchor to be welded with longitudinally and round end that arc is laid to interval welds nail 25.
Some principles of the utility model patent that just explains through diagrams described in above it is pointed out that back combined cable beam anchor block structure, are easy to carry out some amendments and change on this basis due to the those of ordinary skill concerning constructed field.Therefore, this manual be not utility model patent to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model patent is applied for.
Claims (3)
1. prestressed concrete cable-stayed bridge back combined cable beam anchorage structure, comprise case beam and one end anchoring suspension cable thereon (40), it is characterized in that: described case beam arranges rear pouring concrete anchor block (20) at web (10) top of beam section relevant position, and pre-buried in web (10), rear pouring concrete anchor block (20) prestressed strand (30) is set, rear pouring concrete anchor block (20) and web (10) are connected to form stressed entirety by prestressed strand (30) after rear pouring concrete anchor block (20) end one-end tension; Pre-buried and be fixedly installed combination anchor plate in rear pouring concrete anchor block (20), one end of suspension cable (40) is anchored on combination anchor plate.
2. prestressed concrete cable-stayed bridge back combined cable beam anchorage structure as claimed in claim 1, it is characterized in that: described combination anchor plate comprises the suspension cable built-in pipe (21), anchor front reinforcement steel plate (22) and the anchor plate (23) that are welded as a whole, be welded with stiffening rib (24) after the uniform anchor of suspension cable built-in pipe (21) hoop between anchor plate (23) and suspension cable built-in pipe (21), the outer wall of suspension cable built-in pipe (21) be welded with longitudinally and round end weldering nail (25) that arc is laid to interval.
3. prestressed concrete cable-stayed bridge back combined cable beam anchorage structure as claimed in claim 1, it is characterized in that: the cross section strengthening steel plate (22) before described anchor be recessed semicircle, its outer wall to be welded with longitudinally and round end that arc is laid to interval welds and follows closely (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594878.8U CN204185769U (en) | 2014-10-14 | 2014-10-14 | Prestressed concrete cable-stayed bridge back combined cable beam anchorage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594878.8U CN204185769U (en) | 2014-10-14 | 2014-10-14 | Prestressed concrete cable-stayed bridge back combined cable beam anchorage structure |
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| CN204185769U true CN204185769U (en) | 2015-03-04 |
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| CN201420594878.8U Active CN204185769U (en) | 2014-10-14 | 2014-10-14 | Prestressed concrete cable-stayed bridge back combined cable beam anchorage structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264584A (en) * | 2014-10-14 | 2015-01-07 | 中铁二院工程集团有限责任公司 | Combined cable-girder anchoring structure of pre-stressed concrete cable-stayed bridge top |
| CN105887680A (en) * | 2016-06-02 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Mixed cable-girder anchorage structure |
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2014
- 2014-10-14 CN CN201420594878.8U patent/CN204185769U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264584A (en) * | 2014-10-14 | 2015-01-07 | 中铁二院工程集团有限责任公司 | Combined cable-girder anchoring structure of pre-stressed concrete cable-stayed bridge top |
| CN104264584B (en) * | 2014-10-14 | 2017-01-18 | 中铁二院工程集团有限责任公司 | Combined cable-girder anchoring structure of pre-stressed concrete cable-stayed bridge top |
| CN105887680A (en) * | 2016-06-02 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Mixed cable-girder anchorage structure |
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