CN101446061A - Two-deck concrete main box girder seamless connection structure for single-pylon stayed-cable bridge - Google Patents
Two-deck concrete main box girder seamless connection structure for single-pylon stayed-cable bridge Download PDFInfo
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- CN101446061A CN101446061A CNA200810237430XA CN200810237430A CN101446061A CN 101446061 A CN101446061 A CN 101446061A CN A200810237430X A CNA200810237430X A CN A200810237430XA CN 200810237430 A CN200810237430 A CN 200810237430A CN 101446061 A CN101446061 A CN 101446061A
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Abstract
The invention relates to a two-deck concrete main box girder seamless connection structure for a single-pylon stayed-cable bridge, which is a structure for connecting a main girder, main towers and stay cables of a two-deck stayed-cable bridge with a main box girder. Anchorage blocks at two ends of an anchoring large crossbeam which is poured together with the two-deck main girder and pre-embedded stay cable pipes are connected with an upstream stay cable and a downstream stay cable, respectively, and the stay cables are connected with two main towers positioned on the two sides of the main girder. In the connection structure, the two-deck main girder is poured together with the anchoring large crossbeam to form transverse seamless connection between an upstream main girder and a downstream main girder of the two-deck main girder, and the anchorage blocks at two ends of the anchoring large crossbeam and the preembedded stay cable pipes are integrally poured for prefabrication to form seamless connection. The connection structure is integrated with the main girder, so as to solve the transverse connection problem of the upstream main girder and the downstream main girder of the two-deck main girder and the transverse rigidity problem of the structure. The connection structure has the advantages of simple structure, convenient construction, good economical efficiency, and strong adaptability to connection among the main girder, the main towers and the stay cables.
Description
Technical field
The present invention relates to the joint construction between a kind of girder, king-tower, suspension cable of double width girder cable stayed bridge.
Background technology
Recent two decades comes, Bridges in Our Country technology, constructional materials develop rapidly, and cable stayed bridge is light and handy, attractive in appearance with it, economical and suitable, has obtained extensive use in the highway in China bridge construction.
Cable stayed bridge is to reach the common stressed space structures system that constitutes of beam bracing in length and breadth by girder, suspension cable, king-tower, its main feature is that the girder load passes on the king-tower by suspension cable, based on the needs that suspension cable is connected with girder, cable-stayed bridge main-beam generally adopts the single width main beam structure.Therefore double width prestressed concrete cable-stayed bridge girder is a kind of structural shape of novelty, and the connection between its double width girder, suspension cable, the king-tower does not still have the tectonic type of moulding, and the joint construction between new double width girder, suspension cable, the king-tower need be provided.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide that a kind of simple structure, reliability height, easy construction, profile are succinct, the concrete box shaped girder seamless connection structure of single cable stayed-cable bridge double width of good economy performance.
The implementation of the object of the invention is, the concrete box shaped girder seamless connection structure of single cable stayed-cable bridge double width, the anchor block at the anchoring cross bearer two ends that are cast in the double width girder and pre-buried suspension cable conduit are connected with the upstream and downstream suspension cable respectively, and suspension cable is connected with two king-towers that are positioned at the girder both sides.
The present invention and girder combine together, have solved the two horizontal connectivity problems of girder of double width girder cable stayed bridge, have solved the lateral stiffness problem of this structural system.
Simple structure of the present invention, reliability height, easy construction, profile are succinct, good economy performance, and the connection between the girder of double width girder cable stayed bridge, king-tower, suspension cable is had very strong applicability.
Description of drawings
Fig. 1 is that the present invention constructs front view,
Fig. 2 be the A-A of Fig. 1 to view,
Fig. 3 is that the B-B of Fig. 1 is to view
Fig. 4 is an anchoring cross bearer structural representation,
Fig. 5 be the A-A of Fig. 4 to view,
Fig. 6 A, B are the girder 2 prefabricated subsection structure side view and the sectional views at anchoring cross bearer place.
The specific embodiment
With reference to Fig. 1,2,3,4,5, double width girder 2 is cast in anchoring cross bearer 1, the anchor block 5 at anchoring cross bearer 1 two ends and pre-buried suspension cable conduit 6 are connected with upstream and downstream suspension cable 3 respectively, and suspension cable 3 is connected with two king-towers 4 that are positioned at the girder both sides.
Below intermittent line among Fig. 2 is the girder symmetrical center line, and the middle ware broken string among Fig. 3 is the bridge center line, and the intermittent line of left end is the symmetrical configuration center line among Fig. 4,5.
The present invention constructs as follows: for the girder of cantilever cast-in-place construction, double width girder 2 is with the reinforcing bar colligation of anchoring cross bearer 1, interconnect, build together then, constitute the integral body of seamless link, anchoring cross bearer 1 two ends are provided with anchor block 5, and pre-buried suspension cable conduit 6, suspension cable 3 beam anchorages are in cross bearer 1, and the tower end is connected with king-tower 4.
Girder for the free cantilever erection construction, girder 2 prefabricated subsections at anchoring cross bearer 1 and place, the colligation together of both reinforcing bars interconnects, and anchoring cross bearer 1 two ends are provided with anchor block 5, and pre-buried suspension cable conduit 6, monobloc cast is prefabricated then, and the big sections 7 of the precast monolithic of the seamless link shown in pie graph 4,5 and Fig. 6 A, the B is after this big sections 7 is finished with the girder assembly unit, suspension cable 3 beam anchorages are on cross bearer 1, and the tower end is connected with king-tower 4.The length intermittent line is the bridge center line in the middle of among Fig. 6 A, the B, and the intermittent line of both sides is the sections line of the big sections of precast monolithic.
Claims (1)
1, the concrete box shaped girder seamless connection structure of single cable stayed-cable bridge double width, it is characterized in that the anchor block at the anchoring cross bearer two ends that are cast in the double width girder and pre-buried suspension cable conduit are connected with the upstream and downstream suspension cable respectively, suspension cable is connected with two king-towers that are positioned at the girder both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810237430XA CN101446061B (en) | 2008-12-26 | 2008-12-26 | Two-deck concrete main box girder seamless connection structure for single-pylon stayed-cable bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810237430XA CN101446061B (en) | 2008-12-26 | 2008-12-26 | Two-deck concrete main box girder seamless connection structure for single-pylon stayed-cable bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101446061A true CN101446061A (en) | 2009-06-03 |
| CN101446061B CN101446061B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810237430XA Active CN101446061B (en) | 2008-12-26 | 2008-12-26 | Two-deck concrete main box girder seamless connection structure for single-pylon stayed-cable bridge |
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| CN (1) | CN101446061B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410083A (en) * | 2013-08-21 | 2013-11-27 | 东南大学 | Mixed control system for longitudinal wind-induced response of multi-pylon cable stayed bridge structure |
-
2008
- 2008-12-26 CN CN200810237430XA patent/CN101446061B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410083A (en) * | 2013-08-21 | 2013-11-27 | 东南大学 | Mixed control system for longitudinal wind-induced response of multi-pylon cable stayed bridge structure |
| CN103410083B (en) * | 2013-08-21 | 2015-07-01 | 东南大学 | Mixed control system for longitudinal wind-induced response of multi-pylon cable stayed bridge structure |
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| Publication number | Publication date |
|---|---|
| CN101446061B (en) | 2010-09-15 |
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