CN105672145A - Structure for broadening bridge by additionally arranging steel cap beam on top of pier - Google Patents
Structure for broadening bridge by additionally arranging steel cap beam on top of pier Download PDFInfo
- Publication number
- CN105672145A CN105672145A CN201610165224.7A CN201610165224A CN105672145A CN 105672145 A CN105672145 A CN 105672145A CN 201610165224 A CN201610165224 A CN 201610165224A CN 105672145 A CN105672145 A CN 105672145A
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- CN
- China
- Prior art keywords
- bridge
- steel
- pier
- cap beam
- steel cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention provides a structure for broadening a bridge by additionally arranging a steel cap beam on the top of a pier, belonging to the technical field of bridge engineering. According to the structure for broadening the bridge by additionally arranging the steel cap beam on the top of the pier, post-pouring concrete is poured at the two sides of the original concrete pier, and the specific concrete width of the post-pouring concrete is determined according to the stress of the upper part of the bridge; the steel cap beam is additionally arranged on the top of the pier poured with the post-pouring concrete; the steel cap beam has a box cross section and is formed by steel plates in a welding way; according to the stress of the upper part of the bridge, prestressed steel beams and prestressed anchor bars are arranged in the steel cap beam; the prestressed steel beams are vertical to the prestressed anchor bars in the steel cap beam; steel box beams are additionally arranged at the two sides of an original concrete box beam; the steel box beams are positioned on the steel cap beam. The structure for broadening the bridge by additionally arranging the steel cap beam on the top of the pier has the effects and advantages that the structure of the original bridge main body is not torn down, so that the economy of widening reformation is guaranteed; the design load of the structure of the newly added steel box beams is not limited, so that the operation reliability of the broadened bridge is high; in the construction process, the traffic on the bridge is not needed to be interrupted; furthermore, the structure for broadening the bridge by additionally arranging the steel cap beam on the top of the pier is short in site construction period and has little influence on ground transportation.
Description
Technical field
The invention belongs to technical field of bridge engineering, it relates to need the bridge of widening and improving in bridge construction, especially need the Urban Bridge that two side is widened, a kind of Dun Ding of concrete offer sets up the structure that bridge widened by steel bent cap.
Background technology
At present, in bridge widening field, common way has following several way:
Increase Steel Concrete cantilever outrigger: remove old bridge railings and walkway facility, strengthen or increase cantilever outrigger, it is achieved widen the object of bridge. Two sides that the method is applicable to general beam bridge and arcuately bridge are widened, but the restriction by self-bearing capacity, widen span limited, act on the load on cantilever also unsuitable excessive, be usually suitable only for People's Bank of China and the vehicle that should not pass through.
Set up side bar: bridge girder being adopted to cored slab, T beam and small box girder, remove railing and the walkway facility of Jiu Qiao one or both sides, the side bar of same beam bodily form formula is set up in original bridge both sides, splice with primary structure, set up bridge pier simultaneously and lengthen former bent cap to support newly-increased side bar, it is achieved widen the object of bridge. Mostly needing to set up bridge pier due to this method, original ground traffic impact is big, and therefore the construction land in city is by the use of restriction the method, and in addition, Urban Bridge is in the majority with overall case beam, and the method is not suitable for.
Newly building bridge: old bridge short of width, builds new bridge in old bridge list side or both sides, in widening, does not substantially change old bridge structure, build Fu Qiao and former bridge relatively independent, after widening, new bridge and Jiu Qiao are independent. But, need to set up bridge pier due to this method, seriously affect original ground traffic, therefore the construction land in city is by the use of restriction the method.
Summary of the invention
In order to solve existing old bridge widening technology exists to widen design load limited, newly-increased hydrodynamic conditions traffic above-ground, and construction process needs middle bridge cut-off submit the deficiencies such as logical, the present invention provides the structure of a kind of new old bridge widening, this structure does not need to set up new bridge pier, widening design load unrestricted, construction process is submitted logical without the need to middle bridge cut-off.
The technical scheme of the present invention is:
Dun Ding sets up the structure that bridge widened by steel bent cap, pouring concrete after the both sides of former concrete pier are built, and determines the concrete width of rear pouring concrete by power according to bridge top; After building, steel bent cap is set up at the top of pouring concrete bridge pier, and steel bent cap is box-type section, is welded by steel plate; According to bridge top by power, in steel bent cap, arrangement prestress steel bundle and prestress dowel, prestressed strand and prestress dowel are arranged vertically in steel bent cap; Setting up steel box-girder in former concrete box girder both sides, steel box-girder is seated on steel bent cap.
Effect and the benefit of the present invention be: does not remove the economy that original bridge main body structure guarantees widen and rebuild; The design load of newly-increased steel box girder is not limited; Do not set up new bridge pier, original ground traffic organization impact is little; It is logical that construction process does not need middle bridge cut-off to submit, and is operated in factory in a large number and completes, and the site operation duration is short, and construction process is little on traffic above-ground impact.
Accompanying drawing explanation
The Dun Ding that Fig. 1 is the present invention sets up the structural front view that bridge widened by steel bent cap.
The Dun Ding that Fig. 2 is the present invention sets up the structure right view that bridge widened by steel bent cap.
The Dun Ding that Fig. 3 is the present invention sets up the structure vertical view that bridge widened by steel bent cap.
In figure: 1 steel box-girder; 2 former concrete box girders; 3 steel bent caps; 4 prestressed strands; 5 prestress dowels; 6 former concrete piers; Pouring concrete after 7.
Embodiment
The specific embodiment of the present invention is described in detail below in conjunction with technical scheme and accompanying drawing.
Former bridge width is 18.5 meters, and girder is concrete box girder cross section, and widening rear bridge width is 26m, and Specific construction flow process is as follows:
(1) at steel beam column such as prefabrication steel bent cap and both sides steel box-girder.
(2) to former bridge pier dabbing, bar planting, building rear pouring concrete, by vertical for bridge pier bridge to each thickening 0.5 meter, add thick-layer top at concrete and install steel bent cap embedded section, steel bent cap is fixed by the prestress dowel of the fixing steel bent cap of stretch-draw, splicing residue steel bent cap.
(3) traffic on bridge is carried out control, remove the crashproof guardrail of former bridge and part concrete cantilever.
(4) support installing both sides steel box-girder is adopted.
(5) the external prestressed strand of stretch-draw steel bent cap.
(6) anticorrosion of steel structure process is carried out, construction bridge deck pavement and attached engineering.
Cross section: former bridge cross section remains unchanged, steel box-girder adopts box-type section.
Claims (1)
1. a Dun Ding sets up the structure that bridge widened by steel bent cap, it is characterised in that, pouring concrete after the both sides of former concrete pier are built, determines the concrete width of rear pouring concrete according to bridge top by power; After building, steel bent cap is set up at the top of pouring concrete bridge pier, and steel bent cap is box-type section, is welded by steel plate; According to bridge top by power, in steel bent cap, arrangement prestress steel bundle and prestress dowel, prestressed strand and prestress dowel are arranged vertically in steel bent cap; Setting up steel box-girder in former concrete box girder both sides, steel box-girder is seated on steel bent cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610165224.7A CN105672145B (en) | 2016-03-18 | 2016-03-18 | A kind of pier top sets up the structure that steel lid beam widens bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610165224.7A CN105672145B (en) | 2016-03-18 | 2016-03-18 | A kind of pier top sets up the structure that steel lid beam widens bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105672145A true CN105672145A (en) | 2016-06-15 |
| CN105672145B CN105672145B (en) | 2017-10-13 |
Family
ID=56311260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610165224.7A Expired - Fee Related CN105672145B (en) | 2016-03-18 | 2016-03-18 | A kind of pier top sets up the structure that steel lid beam widens bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105672145B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468743A (en) * | 2019-07-31 | 2019-11-19 | 中铁大桥局集团有限公司 | A kind of traveling cradle and construction method for the transformation of old pier coping |
| CN112323653A (en) * | 2020-10-29 | 2021-02-05 | 德州市公路工程总公司 | Construction method of active bridge channel widening structure and application thereof |
| CN114214969A (en) * | 2021-12-01 | 2022-03-22 | 广州市市政工程设计研究总院有限公司 | Width splicing structure and method of width splicing bridge |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2003626C2 (en) * | 2009-10-12 | 2011-04-13 | Heijmans Beton En Waterbouw B V | METHOD FOR IMPROVING A STEEL BRIDGE, AND ALSO IMPROVED STEEL BRIDGE. |
| US20110219554A1 (en) * | 2010-03-15 | 2011-09-15 | Aumuller Paul M | Bridge construction and method of replacing bridges |
| MX2010007687A (en) * | 2009-07-27 | 2011-10-28 | Encon Solutions Llc | Apparatus and method for replacing a bridge using pre-cast construction techniques. |
| CN203403373U (en) * | 2013-08-20 | 2014-01-22 | 中铁第四勘察设计院集团有限公司 | Antidumping reinforcing device of single-column pier bridge |
| CN203700977U (en) * | 2013-11-12 | 2014-07-09 | 丁西焘 | Spring supporting-jacking reinforcing structure used for improving shear resistance capacity of bridge |
| CN205557351U (en) * | 2016-03-18 | 2016-09-07 | 大连理工大学 | Dun ding sets up structure that bridge was widened to steel bent cap |
-
2016
- 2016-03-18 CN CN201610165224.7A patent/CN105672145B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX2010007687A (en) * | 2009-07-27 | 2011-10-28 | Encon Solutions Llc | Apparatus and method for replacing a bridge using pre-cast construction techniques. |
| NL2003626C2 (en) * | 2009-10-12 | 2011-04-13 | Heijmans Beton En Waterbouw B V | METHOD FOR IMPROVING A STEEL BRIDGE, AND ALSO IMPROVED STEEL BRIDGE. |
| US20110219554A1 (en) * | 2010-03-15 | 2011-09-15 | Aumuller Paul M | Bridge construction and method of replacing bridges |
| CN203403373U (en) * | 2013-08-20 | 2014-01-22 | 中铁第四勘察设计院集团有限公司 | Antidumping reinforcing device of single-column pier bridge |
| CN203700977U (en) * | 2013-11-12 | 2014-07-09 | 丁西焘 | Spring supporting-jacking reinforcing structure used for improving shear resistance capacity of bridge |
| CN205557351U (en) * | 2016-03-18 | 2016-09-07 | 大连理工大学 | Dun ding sets up structure that bridge was widened to steel bent cap |
Non-Patent Citations (1)
| Title |
|---|
| 丁佳元，钟小军，芮浩飞: "上海市内环高架道路(宛平南路—瑞金南路)拓宽方案探讨", 《中国市政工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468743A (en) * | 2019-07-31 | 2019-11-19 | 中铁大桥局集团有限公司 | A kind of traveling cradle and construction method for the transformation of old pier coping |
| CN110468743B (en) * | 2019-07-31 | 2020-12-01 | 中铁大桥局集团有限公司 | Movable hanging bracket for transformation of old bridge pier cap and construction method |
| CN112323653A (en) * | 2020-10-29 | 2021-02-05 | 德州市公路工程总公司 | Construction method of active bridge channel widening structure and application thereof |
| CN114214969A (en) * | 2021-12-01 | 2022-03-22 | 广州市市政工程设计研究总院有限公司 | Width splicing structure and method of width splicing bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105672145B (en) | 2017-10-13 |
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| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20200318 |