CN1556281A - Prestressed concrete continuous truss frame arched bridge - Google Patents
Prestressed concrete continuous truss frame arched bridge Download PDFInfo
- Publication number
- CN1556281A CN1556281A CNA200410021652XA CN200410021652A CN1556281A CN 1556281 A CN1556281 A CN 1556281A CN A200410021652X A CNA200410021652X A CN A200410021652XA CN 200410021652 A CN200410021652 A CN 200410021652A CN 1556281 A CN1556281 A CN 1556281A
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- bridge
- arch
- anchoring wall
- upper chord
- abutment
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Abstract
The arch bridge is composed of upper chord, lower chord, upright posts, inclined bars, anchoring wall at bridge abutment. Supported by arch support, lower chord through upright posts, inclined bars supports upper chord. The upper chord as a continuous beam is articulated on anchoring wall at bridge abutment through hinges at two ends. There is contraction-joint between upper chord and anchoring wall at bridge abutment. The invention raises integrity of bridge, reduces deflection, vibration and jigging motion providing advantages of improving trafficked effect and durability of bridge. Comparing with box ribbed arch bridges, truss bridges etc, the invented arch bridge possesses general superiorities suitable to use in each classified highways.
Description
Technical field:
The present invention relates to a kind of bridge, particularly a kind of continuous trusse arch bridge.
Technical background:
Purlin formula combination arch bridge degree of safety in the cantilever construction process of crossing over high gorge deep valley is higher in the prior art, and bridge is completed the back unit area building cost end of than, in the arch bridge of erection without scaffolding remarkable advantages is arranged.But on the history of more than two decades since its establishment, some problem is not solved all the time at all, promptly leave the shrinkage joint at the junction surface of its limit portion purlin formula semi girder and middle part truss arch, disconnect fully owing to wind up, cause the globality of main aperture superstructure relatively poor, when the loaded vehicle fast running is passed through, significantly vibratory sensation is arranged on the bridge, its power performance is relatively poor than it cast-in-place box arch bridge.This make purlin formula combination arch bridge can only be on second grade highway careful usefulness, and be limited on the speedway and use.
Purlin formula combination arch bridge exists the basic reason of above-mentioned defective to be: the complicated internal force that place, (1) shrinkage joint lower edge bears pressure, bends, cuts, turns round, and hogging moment and upper limb tensile stress are bigger; (2) brace is located at the shrinkage joint, the montant tensile stress is very big, use existing means---strengthen plain bars and prestressing force and also be difficult to deal with problems at all, making, Cheng Qiao cracks unavoidably at this place's web member, and this locates the junction surface of semi girder and truss arch just, and this reduces the durability of combination arch bridge greatly; (3) the middle part truss arch is owing to be smooth arch, and vault positive bending moment and lower edge tensile stress are bigger, make the final deflection value of vault than box arch bridge for big, vertical curve is set is unfavorable for the comfortableness of driving a vehicle again.
Summary of the invention:
The objective of the invention is: provide a kind of whole winding up to be continuous just knot beam, do not establish the shrinkage joint, integral bridge is strengthened greatly, significantly reduce the amount of deflection of superstructure and vibrations, rocking sensation, improve the driving effect, improve the durability of bridge.
The present invention constitutes like this: it is by wind up (1), lower edge (2), montant (3), brace (4), abut (5), abutment anchoring wall (6) is formed, lower edge (2) is supported on the abut (5), and supports and wind up (1) by montant (3), brace (4), and wind up (1) is a firm continuously knot beam, its two ends are hinged on abutment anchoring wall (6), wind up (1) and abutment anchoring wall (6) between leave shrinkage joint (7).
The present invention compared with prior art has the globality that can improve bridge on the basis that does not change construction technology and material substantially greatly, significantly reduces the amount of deflection of superstructure and vibrations, rocking sensation, improves the driving effect, improves the advantages such as durability of bridge.The cable lifting box arch bridge that compares in the concrete arch-type bridge of erection without scaffolding, purlin formula combination arch bridge, old-fashioned trussed bridge etc. have more comprehensive advantage.Being suitable for each standard highway uses.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention.
The specific embodiment:
Embodiments of the invention: the two end supports of lower edge (2) is on abut (5), montant (3) is single montant, montant (3) and brace (4) support, be connected wind up (1) and lower edge (2) between, wind up (1) make a whole just knot beam continuously, when building, its two ends are hinged on abutment anchoring wall (6), during use the two is separated, wind up (1) and abutment anchoring wall (6) between leave shrinkage joint (7).
Claims (1)
1, a kind of prestressed concrete continuous trusse arch bridge, it is by wind up (1), lower edge (2), montant (3), brace (4), abut (5), abutment anchoring wall (6) is formed, and lower edge (2) is supported on the abut (5), and support wind up (1) by montant (3), brace (4), it is characterized in that: wind up (1) is a continuous just knot beam, and its two ends are hinged on abutment anchoring wall (6), wind up (1) and abutment anchoring wall (6) between leave shrinkage joint (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410021652XA CN1556281A (en) | 2004-01-09 | 2004-01-09 | Prestressed concrete continuous truss frame arched bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410021652XA CN1556281A (en) | 2004-01-09 | 2004-01-09 | Prestressed concrete continuous truss frame arched bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1556281A true CN1556281A (en) | 2004-12-22 |
Family
ID=34351970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200410021652XA Pending CN1556281A (en) | 2004-01-09 | 2004-01-09 | Prestressed concrete continuous truss frame arched bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1556281A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100567644C (en) * | 2007-05-09 | 2009-12-09 | 华东交通大学 | A kind of joist type cable arch bridge structure and job practices |
| CN102051852A (en) * | 2011-01-23 | 2011-05-11 | 长安大学 | Steel box concrete truss arch bridge |
| CN102433839A (en) * | 2011-10-15 | 2012-05-02 | 安徽华力建设集团有限公司 | Wood truss support structure for arch cap formwork of rigid frame arch bridge and construction method of wood truss support structure |
| CN102912736A (en) * | 2012-11-07 | 2013-02-06 | 中铁六局集团有限公司 | Vertical assembling construction method for trussed arch bridge |
| CN104499437A (en) * | 2014-12-11 | 2015-04-08 | 中冶建筑研究总院有限公司 | Transverse connecting structure reinforcement and reconstruction method for prestressed concrete combined truss arch bridge |
| CN108166380A (en) * | 2018-03-14 | 2018-06-15 | 重庆交通大学 | For the hexagon damping device of arch bridge |
| CN109024225A (en) * | 2018-07-25 | 2018-12-18 | 湖南大学 | Ultra-high performance concrete truss arch blade unit, truss arch piece bridge and construction method |
-
2004
- 2004-01-09 CN CNA200410021652XA patent/CN1556281A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100567644C (en) * | 2007-05-09 | 2009-12-09 | 华东交通大学 | A kind of joist type cable arch bridge structure and job practices |
| CN102051852A (en) * | 2011-01-23 | 2011-05-11 | 长安大学 | Steel box concrete truss arch bridge |
| CN102433839A (en) * | 2011-10-15 | 2012-05-02 | 安徽华力建设集团有限公司 | Wood truss support structure for arch cap formwork of rigid frame arch bridge and construction method of wood truss support structure |
| CN102912736A (en) * | 2012-11-07 | 2013-02-06 | 中铁六局集团有限公司 | Vertical assembling construction method for trussed arch bridge |
| CN104499437A (en) * | 2014-12-11 | 2015-04-08 | 中冶建筑研究总院有限公司 | Transverse connecting structure reinforcement and reconstruction method for prestressed concrete combined truss arch bridge |
| CN108166380A (en) * | 2018-03-14 | 2018-06-15 | 重庆交通大学 | For the hexagon damping device of arch bridge |
| CN109024225A (en) * | 2018-07-25 | 2018-12-18 | 湖南大学 | Ultra-high performance concrete truss arch blade unit, truss arch piece bridge and construction method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |