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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- bridge
- steel
- pier
- box
- concrete
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 54
- 239000010959 steel Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明提供了一种墩顶增设钢盖梁拓宽桥梁，属于桥梁工程技术领域。一种墩顶增设钢盖梁拓宽桥梁的结构，在原混凝土桥墩的两侧浇筑后浇混凝土，根据桥梁上部受力确定后浇混凝土的具体宽度；在浇筑后浇混凝土桥墩的顶部增设钢盖梁，钢盖梁为箱型截面，由钢板焊接而成；根据桥梁上部受力，在钢盖梁内布置预应力钢束和预应力锚筋，预应力钢束和预应力锚筋在钢盖梁内垂直布置；在原混凝土箱梁两侧增设钢箱梁，钢箱梁坐落在钢盖梁上。本发明的效果和益处是不拆除原有桥梁主体结构确保加宽改造的经济性；新增钢箱梁结构的设计荷载不受限，拓宽后的桥梁运营可靠性高；施工过程不需要中断桥上交通，同时现场施工工期短，对地面交通影响小。
The invention provides a bridge widened by adding a steel cover beam on the top of a pier and belongs to the technical field of bridge engineering. A structure in which a steel cover beam is added to the top of the pier to widen the bridge. Post-cast concrete is poured on both sides of the original concrete pier, and the specific width of the post-cast concrete is determined according to the force on the upper part of the bridge; a steel cover beam is added on the top of the post-cast concrete pier, The steel cover beam is a box-shaped section welded by steel plates; according to the force on the upper part of the bridge, prestressed steel beams and prestressed anchor bars are arranged in the steel cover beam, and the prestressed steel beams and prestressed anchor bars are placed in the steel cover beam. Vertical arrangement; steel box girders are added on both sides of the original concrete box girders, and the steel box girders are located on the steel cover girders. The effects and benefits of the present invention are that the main structure of the original bridge is not removed to ensure the economy of widening and reconstruction; the design load of the newly added steel box girder structure is not limited, and the widened bridge has high operational reliability; the construction process does not need to interrupt the bridge At the same time, the on-site construction period is short, and the impact on ground traffic is small.
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 | A kind of wide-splitting structure and method of split-width bridge |
Citations (6)
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|---|---|---|---|---|
| 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 | A mobile hanger and construction method for the renovation of old bridge pier caps |
| 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 | A kind of wide-splitting structure and method of split-width bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105672145B (en) | 2017-10-13 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20200318 |
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| CF01 | Termination of patent right due to non-payment of annual fee |