CN102767140A - Construction method for rapidly mounting and dismounting temporary support of continuous girder bridge pier - Google Patents
Construction method for rapidly mounting and dismounting temporary support of continuous girder bridge pier Download PDFInfo
- Publication number
- CN102767140A CN102767140A CN201210262392XA CN201210262392A CN102767140A CN 102767140 A CN102767140 A CN 102767140A CN 201210262392X A CN201210262392X A CN 201210262392XA CN 201210262392 A CN201210262392 A CN 201210262392A CN 102767140 A CN102767140 A CN 102767140A
- Authority
- CN
- China
- Prior art keywords
- bridge pier
- positioning framework
- temporary support
- concrete
- template
- 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.)
- Granted
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method for rapidly mounting and dismounting a temporary support of a continuous girder bridge pier. The construction method comprises the following steps of: pre-embedding a connection steel bar at the top of a pier; filling isolation sand in a lower layer positioning framework; concreting concrete in a template on the lower layer positioning framework; filling the isolation sand in an upper layer positioning framework on the concrete, so as to manufacture the temporary prier support; before concreting a continuous girder, cutting the upper layer positioning framework and the lower layer positioning framework of the concrete, and removing the isolation sand; cutting the connection steel bar; and drawing out an entire concrete block, and dismounting the temporary support. The construction method provided by the invention has the advantages of simple operation, rapid construction, fewer operators in need of being coordinated, less auxiliary mechanical equipment, and very short time desired by mounting and dismounting the temporary support. The construction period can be effectively shortened; the cost is reduced; the security is strong; and the construction method is applicable to mounting and dismounting the temporary support of the continuous girder bridge pier with different spans.
Description
Technical field
The present invention relates to a kind of job practices of installing and removing continuous beam bridge pier temporary support, specifically is a kind of Fast Installation and the job practices of removing continuous beam bridge pier temporary support, belongs to the road and bridge construction field.
Background technology
Along with road traffic develops rapidly, the phenomenon of railway and highway crossing Existing Railway Bridges or existing highway bridge is more and more, and the mode of more employing cantilever pouring concrete continuous beam is to satisfy the height and the wide requirement of crossing over structure.The installation of continuous beam bridge pier temporary support and dismounting become a key link like this; The job practices of continuous beam bridge pier temporary support mainly contains following several kinds at present: the one, adopt the whole concrete temporary support; Whole concrete temporary support construction technology is that whole temporary support all adopts reinforced concrete structure, and connecting reinforcement is not had separation layer by closely knit being wrapped in the concrete between temporary support and pier stud, the beam body; When removing, need cut like this whole concrete temporary support; The concrete grade of general temporary support all surpasses C40, and also there is situation such as delaying the duration in quite time-consuming taking a lot of work when cutting; The 2nd, adopt the sulphur-bonded mortar temporary support, installation to the lead-in wire in the seat structure, sulphur-bonded mortar need be careful when operation for it, is easy to when mounted resistive conductor is broken; When so just having caused removing pier top temporary support in the later stage, can't the preheating resistive conductor, causing can not the dissolution of sulphur mortar; Do not have the effect of dissolving layer; Need cut whole concrete pier top temporary support during dismounting, the cost plenty of time, the duration is longer.Still construction technology is not available preferably in present this area.
Summary of the invention
The job practices that the purpose of this invention is to provide a kind of Fast Installation and remove continuous beam bridge pier temporary support; Can be through changing template, positioning framework size, pre-buried connecting reinforcement number and concrete grade, the requirement that realizes installing and removing different spans continuous beam bridge pier temporary support.
Workflow of the present invention is:
A. the pre-buried connecting reinforcement at the bridge pier top;
B. lower floor's positioning framework is placed bridge pier top design position;
C. in lower floor's positioning framework, fill up and isolate sand and floating;
D. mounting template on lower floor's positioning framework;
E. concreting in template;
F., the upper strata positioning framework is installed on concrete;
G. in the positioning framework of upper strata, fill up again and isolate sand and floating, process the bridge pier temporary support;
H. before continuous beam closes up, two-layer positioning framework about the concrete is severed, removed and isolate sand;
I. cut off connecting reinforcement;
J. pull out whole concrete block, remove temporary support.
The present invention is simple to operate, and construction is installed or removed by reducing at present discontented working day three original above working days fast, needs the compounding practice personnel few, and reducing to 2 to 4 people by 6 to 8 original people can accomplish; Accessory machinery reduces to 1 to 2 by 4 to 8 air compressor machines of original needs and gets final product; Therefore; Installation and dismounting needed time of temporary support are very short, can shorten the construction period effectively, reduce cost; High safety, and be suitable for the installation and the dismounting of different spans continuous beam bridge pier temporary support.
Description of drawings
Accompanying drawing 1 be accompanying drawing 2 B-B of the present invention to cross-sectional view.
Accompanying drawing 2 are accompanying drawing 1 A-A of the present invention to cross-sectional view.
Description of reference numerals is following:
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
A. at first confirm the size of bridge pier temporary support according to factors such as beam body span, main pier bearing capacities; Make corresponding positioning framework (1) and template (4); The connecting reinforcement (3) of pre-buried certain radical and specification at the bridge pier top designs the concrete (5) of certain strength grade;
B. bridge pier temporary support position is cleaned out, according to design size, snap the line on the bridge pier top places the bridge pier top to go up the snap the line position lower floor's positioning framework (1);
C. in lower floor's positioning framework (1), fill up isolate husky (2) and compacting floating, between pre-buried connecting reinforcement (3), fill up simultaneously isolate husky (2) and compacting floating;
D. mounting template (4), and go up welding fixed form (4) at lower floor's positioning framework (1), prevent template (4) off normal or bloated mould;
E., twice draw rings (6) are installed in template (4) outside, after waiting to fix, concrete perfusion (5) and vibrating template (4) in, surperficial floating;
F., upper strata positioning framework (1) is installed on concrete (5) subsequently;
G. it is floating in upper strata positioning framework (1), to fill up isolation husky (2) and compacting again, processes the bridge pier temporary support;
H. before continuous beam closed up, use gas cutting two-layer positioning framework (1) was up and down severed, and removes and isolates sand (2), exposes connecting reinforcement (3);
I. use gas cutting to cut off the connecting reinforcement (3) between fluctuate interlayer;
J. utilize mechanical connection draw ring (6), haul out concrete (5) piece between interlayer, remove the bridge pier temporary support.
Claims (2)
1. the Fast Installation and the job practices of removing continuous beam bridge pier temporary support, it is characterized in that: its workflow is:
A. the pre-buried connecting reinforcement (3) at the bridge pier top;
B. lower floor's positioning framework (1) is placed bridge pier top design position;
C. in lower floor's positioning framework (1), fill up and isolate sand (2) and floating;
D. go up mounting template (4) at lower floor's positioning framework (1);
E. concreting (5) in template (4);
F., upper strata positioning framework (1) is installed on concrete (5);
G. in upper strata positioning framework (1), fill up again and isolate sand (2) and floating, process the bridge pier temporary support;
H. before continuous beam closes up, the two-layer up and down positioning framework of concrete (5) (1) is severed, removed and isolate husky (2);
I. cut off connecting reinforcement (3);
J. pull out whole concrete block (5), remove temporary support.
2. Fast Installation according to claim 1 and the job practices of removing continuous beam bridge pier temporary support is characterized in that:
A. at first confirm the size of bridge pier temporary support according to factors such as beam body span, main pier bearing capacities; Make corresponding positioning framework (1) and template (4); The connecting reinforcement (3) of pre-buried certain radical and specification at the bridge pier top designs the concrete (5) of certain strength grade;
B. bridge pier temporary support position is cleaned out, according to design size, snap the line on the bridge pier top places the bridge pier top to go up the snap the line position lower floor's positioning framework (1);
C. in lower floor's positioning framework (1), fill up isolate husky (2) and compacting floating, between pre-buried connecting reinforcement (3), fill up simultaneously isolate husky (2) and compacting floating;
D. mounting template (4), and go up welding fixed form (4) at lower floor's positioning framework (1);
E., twice draw rings (6) are installed in template (4) outside, after waiting to fix, concrete perfusion (5) and vibrating template (4) in, surperficial floating;
H. before continuous beam closed up, use gas cutting two-layer positioning framework (1) was up and down severed, and removes and isolates sand (2), exposes connecting reinforcement (3);
I. use gas cutting to cut off the connecting reinforcement (3) between fluctuate interlayer;
J. utilize mechanical connection draw ring (6), haul out concrete (5) piece between interlayer, remove the bridge pier temporary support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262392.XA CN102767140B (en) | 2012-07-27 | 2012-07-27 | Construction method for rapidly mounting and dismounting temporary support of continuous girder bridge pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262392.XA CN102767140B (en) | 2012-07-27 | 2012-07-27 | Construction method for rapidly mounting and dismounting temporary support of continuous girder bridge pier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102767140A true CN102767140A (en) | 2012-11-07 |
| CN102767140B CN102767140B (en) | 2015-07-15 |
Family
ID=47094691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210262392.XA Active CN102767140B (en) | 2012-07-27 | 2012-07-27 | Construction method for rapidly mounting and dismounting temporary support of continuous girder bridge pier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767140B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452048A (en) * | 2013-09-06 | 2013-12-18 | 中铁隧道集团有限公司 | Method for assembling steel web members of steel-concrete combined truss girder bridge |
| CN105463985A (en) * | 2016-01-14 | 2016-04-06 | 中铁七局集团第三工程有限公司 | Temporary support for continuous rigid-frame bridge |
| CN113356059A (en) * | 2021-05-28 | 2021-09-07 | 中国水利水电第四工程局有限公司 | Concrete pouring equipment for bridge pier column |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009185519A (en) * | 2008-02-06 | 2009-08-20 | Ihi Corp | Bridge girder replacing method and apparatus |
| CN201605533U (en) * | 2010-01-15 | 2010-10-13 | 中国建筑第六工程局有限公司 | Continuous beam temporary support |
| CN202116976U (en) * | 2011-05-27 | 2012-01-18 | 中铁四局集团第一工程有限公司 | Temporary support with wood sand frame |
-
2012
- 2012-07-27 CN CN201210262392.XA patent/CN102767140B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009185519A (en) * | 2008-02-06 | 2009-08-20 | Ihi Corp | Bridge girder replacing method and apparatus |
| CN201605533U (en) * | 2010-01-15 | 2010-10-13 | 中国建筑第六工程局有限公司 | Continuous beam temporary support |
| CN202116976U (en) * | 2011-05-27 | 2012-01-18 | 中铁四局集团第一工程有限公司 | Temporary support with wood sand frame |
Non-Patent Citations (2)
| Title |
|---|
| 张巨功: "浅谈公路桥梁临时支座设计与安装", 《能源与节能》 * |
| 曲任权等: "河东特大桥临时支座施工和体系转换方法", 《公路交通科技》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452048A (en) * | 2013-09-06 | 2013-12-18 | 中铁隧道集团有限公司 | Method for assembling steel web members of steel-concrete combined truss girder bridge |
| CN105463985A (en) * | 2016-01-14 | 2016-04-06 | 中铁七局集团第三工程有限公司 | Temporary support for continuous rigid-frame bridge |
| CN105463985B (en) * | 2016-01-14 | 2017-03-29 | 中铁七局集团第三工程有限公司 | A kind of temporary support of firm structure Continuous Bridge |
| CN113356059A (en) * | 2021-05-28 | 2021-09-07 | 中国水利水电第四工程局有限公司 | Concrete pouring equipment for bridge pier column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102767140B (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109944170A (en) | Continuous beam with high-pier end bay Cast-in-Situ Segment and closure section integrated construction system and construction method | |
| CN105350454B (en) | Steel arch rib outer wrapped concrete construction method for steel trussed arch bridge | |
| CN101125441A (en) | Post-tensioned method prestressed concrete box beam whole opening prefabricated construction method | |
| CN106049289B (en) | Bailey beam make-shift bridge transform the construction method of steel reinforced concrete combination permanent bridge as | |
| CN103774565B (en) | A kind of longitudinal prestressing reinforcement means of Hollow Slab Beam Bridge | |
| CN101391438A (en) | Whole dismounting and whole mounting integral slippage large formwork for thin wall U-shaped beam | |
| CN104480868A (en) | Beam detaching method for road bridge overpassing operation railway | |
| CN101781878A (en) | Integral lifting template of main pylon of single-pylon cable-stayed bridge without dorsal cables and lifting construction method thereof | |
| CN103276651A (en) | No-cutting-seam cement concrete pavement structure and construction method thereof | |
| CN102926332B (en) | Derrick arrangement of tools for replacing steel arch bridge suspender and replacing method thereof | |
| CN110453603A (en) | Overpass crossbeam construction method | |
| CN105128131A (en) | Method for manufacturing prestressed hollow slab beam through polystyrene foam | |
| CN102767140A (en) | Construction method for rapidly mounting and dismounting temporary support of continuous girder bridge pier | |
| CN211312247U (en) | Prestressed steel strand reinforcing device additionally arranged in hollow plate hinge joint space | |
| CN102277836B (en) | Construction method of tilting concrete tower base | |
| CN103741597B (en) | A kind of without transition section concrete bridge expansion joint installation and mounting method thereof | |
| CN103938871B (en) | A kind of construction method adopting the steel core concrete column bonded prestress frame beam structure of reinforced concrete ring beam joint | |
| JP2015183404A (en) | Replacing method for stretching device and structure temporal forming plate | |
| CN103552911B (en) | A kind of movable boom hoisting and the construction installation method of use thereof | |
| CN102912748A (en) | Removal-free template on inner side of concrete base of anti-collision guardrail and application method thereof | |
| CN110468744B (en) | Channel bridge reinforcement construction method | |
| CN111119067B (en) | Concrete pouring template for outer packing bottom plate of arch bridge and construction method thereof | |
| CN203393637U (en) | Bearing bracket | |
| CN206279450U (en) | A kind of urban viaduct precast concrete suspending board anticollision wall device | |
| CN114561873A (en) | Bridge high pier construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |