CN102493363A - Quick construction method for segment No.0 of continuous beam - Google Patents
Quick construction method for segment No.0 of continuous beam Download PDFInfo
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- CN102493363A CN102493363A CN2011104119020A CN201110411902A CN102493363A CN 102493363 A CN102493363 A CN 102493363A CN 2011104119020 A CN2011104119020 A CN 2011104119020A CN 201110411902 A CN201110411902 A CN 201110411902A CN 102493363 A CN102493363 A CN 102493363A
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Abstract
The invention discloses a quick construction method for a segment No.0 of a continuous beam, which includes: A10, constructing an assembly foundation along a bridge beside a main pier, wherein the assembly foundation is used for assembling an integral lifting platform for reinforced forms of the segment No.0; A20, synchronously constructing the integral lifting platform for the reinforced forms of the segment No.0 during construction of the main pier, wherein the integral lifting platform for the reinforced forms of the segment No.0 is complete before the main pier is complete; A30, lifting the integral lifting platform for the reinforced forms of the segment No.0 to the top of the main pier, and performing girder concreting with the segment No.0 and performing tensioning and grouting for a bridge body. By the method, the integral lifting platform for the reinforced forms of the segment No.0 is assembled and the forms are mounted and tied with rebars when construction of the main pier cap and a pier body starts, no interference with construction of the body of the main pier exists, and accordingly, construction period can be shortened greatly.
Description
Technical field
The present invention relates to stride greatly footpath continuous girder bridge job practices, be specifically related to No. 0 piece rapid constructing method of continuous beam.
Background technology
Stride the footpath continuous girder bridge greatly and generally select the cast-in-place cantilever method construction for use; Four parts of main branch are carried out; Be respectively No. 0 piece of pier back timber section, Hanging Basket symmetry cantilever pouring part, end bay straightway and end bay and in stride the closure section, wherein No. 0 piece construction is a very important stage in the construction of continuous beam cantilever casting method.
At present, conventional No. 0 block construction method of continuous beam is to build the back that finishes at pier shaft No. 0 piece support system is installed, then No. 0 piece reinforcing bar of assembly unit template on support system, concreting at last.This shows, traditional construction method, the installation of No. 0 piece template, reinforcing bar, prestress pipe etc. must be accomplished the back at pier construction and undertaken by the step, and the duration is long, under the situation of duration anxiety, can not satisfy the construction needs.
Summary of the invention
Technical problem to be solved by this invention is to solve No. 0 long problem of piece construction period of continuous beam.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopted provides No. 0 piece rapid constructing method of a kind of continuous beam, may further comprise the steps:
A10, other basic to the construction assembly unit along bridge in the pier position of main pier, said assembly unit basis is used for No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform;
A20, in the construction of main pier, No. 0 piece reinforcing bar formwork integral hoisting platform of construction of on said assembly unit basis, running simultaneously, and No. 0 piece reinforcing bar formwork integral hoisting platform completion before main pier construction is accomplished;
A30, No. 0 piece reinforcing bar formwork integral hoisting platform of lifting be to main Dun Dunding, carries out that No. 0 piece main beam concrete is built and the stretch-draw mud jacking construction of beam body.
In said method; Said No. 0 piece reinforcing bar formwork integral hoisting platform comprises the tower structure of being made up of many transverse distribution beams and vertical distribution beam and is arranged on No. 0 piece soffit formwork and the left and right side template on the said tower structure that steps A 20 may further comprise the steps:
A201, on the main pier cushion cap of main pier, construct pier shaft and No. 0 piece support system; Said No. 0 piece support system is by being arranged on four steel pipe columns around the pier shaft and connecting system and attached arm is formed; Every steel pipe column utilizes respectively with attached arm and is connected with built-in fitting on the pier shaft, and connects by connecting system between two steel pipe columns being provided with of direction across bridge;
A202, No. 0 piece of construction of on said assembly unit basis, running simultaneously water the hoisting platform of injection molding, and soffit formwork, side template are installed on said hoisting platform, and carry out steel bar overall binding and prestress pipe installation;
Steps A 202 is early than steps A 201 construction completion.
In said method, in steps A 30, No. 0 piece reinforcing bar formwork integral hoisting platform lifting utilizes two cranes hoisted in position in two steps; At first work winching to top, pier top, when being positioned at girder design attitude sky 20cm, that the big arm of two cranes is locked; On each steel pipe column, be provided with respectively then and pull jack; Through pulling jack No. 0 piece reinforcing bar formwork integral hoisting platform is carried out adjustment in place, when and steel pipe column between correct position after, again No. 0 piece reinforcing bar formwork integral hoisting platform is fallen to putting in place and measures; And adjustment absolute altitude, center line, the loose hook in qualified back.
In said method; In steps A 10, otherly in the pier position of main pier drain into few four assembly unit bases to construction two along bridge, and on the end face on each assembly unit basis first, second voussoir of spot welding respectively; The suitable bridge of first, second voussoir is to layout; In on the two adjacent row assembly unit bases, near main pier, second voussoir is away from main pier near first voussoir on the assembly unit basis of main pier; Away from first voussoir on the assembly unit basis of main pier away from main pier; Second voussoir is near main pier; The height of first voussoir is lower than second voussoir; The angle of inclination, bottom surface of No. 0 piece of the gradient that forms between the two end face and continuous beam is identical, and in steps A 20, the end face of first, second voussoir is connected with No. 0 piece reinforcing bar formwork integral hoisting platform full weld.
In said method, said assembly unit basis has six, and two adjacent row are used for No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform, and other row are as subsequent use.
Beneficial effect of the present invention is:
(1), when construction main pier cushion cap, pier shaft, begin No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform, mounting template and assembling reinforcement, do not conflict with main pier main body construction, the time started that is about to No. 0 piece construction has shortened the construction period in advance;
(2), " uprising the empty land that is ", " becoming looses pricks to whole " have been realized; Because work such as the template of No. 0 piece of continuous beam, reinforcing bar, prestressing force have been accomplished on hoisting platform; After lifting puts in place, can be very fast concreting, thus can compress the duration to greatest extent;
(3), the falsework input amount is few, practiced thrift cost, improved economic benefit.
Description of drawings
Fig. 1 is the job site arrangement diagram before No. 0 piece reinforcing bar formwork integral hoisting platform lifting among the present invention;
Fig. 2 is the direction across bridge view of the present invention in construction;
Fig. 3 is that the suitable bridge of the present invention in construction is to view;
Fig. 4 is the tower structure sketch map of No. 0 piece reinforcing bar formwork integral hoisting platform among the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is made detailed explanation.For the ease of describing, to be fore-and-aft direction to direction, be left and right direction in following examples with the direction across bridge direction along bridge.
No. 0 piece rapid constructing method of continuous beam provided by the invention may further comprise the steps:
A10, as shown in Figure 1; On six assembly unit bases 21,22,23,24,25 and 26 of the pier position of main pier 4 side dressing worker; Above-mentioned six assembly units basis along bridge to being two arranged, and on the end face on each assembly unit basis first, second voussoir 51,52 of spot welding respectively, first, second voussoir 51,52 along bridges to layout; First voussoir 51 on the assembly unit basis 21,22 and 25,26 near main pier 4, the second voussoirs 52 away from main pier 4; First voussoir 51 on the assembly unit basis 23,24 is lower than second voussoir 52 away from main pier 4, the second voussoirs 52 near the height of main pier 4, the first voussoirs 51, and the angle of inclination, bottom surface of No. 0 piece of the gradient that forms between the two end face and continuous beam is identical.
Two row that face mutually are used for No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform in totally four assembly unit bases; Other one row totally two assembly unit bases as subsequent use; For example, assembly unit basis 21,22,23,24 is used for No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform, and assembly unit basis 25,26 is subsequent use; Perhaps assembly unit basis 23,24,25,26 is used for No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform, and assembly unit basis 21,22 is subsequent use.
A20, in the main pier 4 of construction, No. 0 piece reinforcing bar formwork integral hoisting platform of construction of on above-mentioned assembly unit basis, running simultaneously, and the completion before main pier construction is accomplished of No. 0 piece reinforcing bar formwork integral hoisting platform.
As shown in Figure 4; No. 0 piece reinforcing bar formwork integral hoisting platform comprises the tower structure of being made up of four transverse distribution beams 9 that are arranged in parallel and 6 vertical distribution beam 8 that are arranged in parallel and is arranged on No. 0 piece soffit formwork 13 and left and right side template 10 (referring to Fig. 2, Fig. 3) on the said tower structure, transverse distribution beam 9 with vertically between the distribution beam 8 respectively through many connecting rods 14 formation robust structure.
The detailed step of steps A 20 is following:
A201, on the main pier cushion cap 42 of main pier 4 cast pier shaft 41; While No. 0 piece support system of assembly unit on main pier cushion cap 42; No. 0 piece support system by be arranged on four steel pipe columns 2 around the pier shaft 41 and connect be 11 with attach arm 6 and form; Every steel pipe column 2 utilizes respectively and attaches arm 6 and be connected with built-in fitting on the pier shaft 41, and is 11 to connect through connection between two steel pipe columns 2 of direction across bridge setting.
A202, on the assembly unit basis 21,22,23,24 run simultaneously the construction No. 0 piece reinforcing bar formwork integral hoisting platform; The tower structure that at first many transverse distribution beams 9 and vertical distribution beam 8 is assemblied to form on first, second voussoir 51,52; First, second voussoir 51,52 is connected with transverse distribution beam 9 full welds; Weld first, second lifting beam 15,16 respectively in the and arranged on left and right sides of tower structure then, first, second lifts beam 15, connects through the lifting beam between 16 is 17 connections;
Afterwards, soffit formwork 13 and left and right side template 10 are installed on tower structure, and carry out steel bar overall binding and prestress pipe installation.
Steps A 202 should be accomplished early than steps A 201 constructions.
A30, the inspection No. 0 piece reinforcing bar formwork integral hoisting platform qualified after; With two hoister in large tonnage 3 with on its lifting to No. 0 piece support system; Because first, second voussoir 51,52 and assembly unit are basic for spot welding is connected, and be that full weld is connected, therefore with No. 0 piece reinforcing bar formwork integral hoisting platform; First, second voussoir 51,52 can separate with the assembly unit basis under the action of traction of crane, with the rising that becomes one of No. 0 piece reinforcing bar formwork integral hoisting platform.
No. 0 piece reinforcing bar formwork integral hoisting platform lifting utilizes two cranes hoisted in position in two steps; At first work winching to top, pier top, when being positioned at girder 7 design attitudes sky 20cm, that the big arm of two cranes is locked; On four steel pipe columns 2, be provided with respectively then and pull jack; Through pulling jack No. 0 piece reinforcing bar formwork integral hoisting platform is carried out adjustment in place, when and steel pipe column 2 between correct position after, again No. 0 piece reinforcing bar formwork integral hoisting platform is fallen to putting in place and measures; And adjustment absolute altitude, center line, the loose hook in qualified back.
To note observing the support situation of No. 0 piece support system and loop wheel machine supporting leg in the whole hoisting process constantly; When especially second step lifted; Require whole process maintenance level; And keep synchronously slow, observe No. 0 spirit level reading on the piece reinforcing bar formwork integral hoisting platform constantly and in time adjust its levelness.
After No. 0 piece reinforcing bar formwork integral hoisting platform is accurately adjusted the location, carry out the stretch-draw mud jacking construction of No. 0 piece girder 7 concretings and No. 0 piece beam body.
In the said method, during No. 0 piece support system of assembly unit, should control well steel pipe column 2 verticality and attach arm 6 with pier shaft and reliably be connected.
During No. 0 piece reinforcing bar formwork integral hoisting platform assembly unit, it is accurate to guarantee to measure unwrapping wire, firm welding between the end face of first, second voussoir 51,52 and the transverse distribution beam 9.
Certainly; The present invention is not limited to above-mentioned form; The construction of assembly unit basis, No. 0 piece support system and No. 0 piece reinforcing bar formwork integral hoisting platform can be adjusted according to the Bridge Pier and Abutment Construction progress in good time; But must guarantee No. 0 piece reinforcing bar formwork integral hoisting platform completion before main pier construction is accomplished, thereby compress the duration to greatest extent.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of under enlightenment of the present invention, making, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (5)
1. No. 0 piece rapid constructing method of continuous beam is characterized in that, may further comprise the steps:
A10, other basic to the construction assembly unit along bridge in the pier position of main pier, said assembly unit basis is used for No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform;
A20, in the construction of main pier, No. 0 piece reinforcing bar formwork integral hoisting platform of construction of on said assembly unit basis, running simultaneously, and No. 0 piece reinforcing bar formwork integral hoisting platform completion before main pier construction is accomplished;
A30, No. 0 piece reinforcing bar formwork integral hoisting platform of lifting be to main Dun Dunding, carries out that No. 0 piece main beam concrete is built and the stretch-draw mud jacking construction of beam body.
2. No. 0 piece rapid constructing method of continuous beam as claimed in claim 1; It is characterized in that; Said No. 0 piece reinforcing bar formwork integral hoisting platform comprises the tower structure of being made up of many transverse distribution beams and vertical distribution beam and is arranged on No. 0 piece soffit formwork and the left and right side template on the said tower structure that steps A 20 may further comprise the steps:
A201, on the main pier cushion cap of main pier, construct pier shaft and No. 0 piece support system; Said No. 0 piece support system is by being arranged on four steel pipe columns around the pier shaft and connecting system and attached arm is formed; Every steel pipe column utilizes respectively with attached arm and is connected with built-in fitting on the pier shaft, and connects by connecting system between two steel pipe columns being provided with of direction across bridge;
A202, No. 0 piece of construction of on said assembly unit basis, running simultaneously water the hoisting platform of injection molding, and soffit formwork, side template are installed on said hoisting platform, and carry out steel bar overall binding and prestress pipe installation;
Steps A 202 is early than steps A 201 construction completion.
3. No. 0 piece rapid constructing method of continuous beam as claimed in claim 2 is characterized in that,
In steps A 30, No. 0 piece reinforcing bar formwork integral hoisting platform lifting utilizes two cranes hoisted in position in two steps, at first rises to winch to top, pier top; When being positioned at girder design attitude sky 20cm; The big arm of two cranes is locked, on each steel pipe column, be provided with respectively then and pull jack, through pulling jack No. 0 piece reinforcing bar formwork integral hoisting platform is carried out adjustment in place; When and steel pipe column between correct position after; Again No. 0 piece reinforcing bar formwork integral hoisting platform is fallen to putting in place and measure, and adjust absolute altitude, center line, the loose hook in qualified back.
4. No. 0 piece rapid constructing method of continuous beam as claimed in claim 1 is characterized in that, in steps A 10; Other draining into to construction two along bridge lacked four assembly unit bases in the pier position of main pier; And first, second voussoir of spot welding respectively on the end face on each assembly unit basis, first, second voussoir along bridge to layout, on the two adjacent row assembly unit bases in; Near main pier, second voussoir is away from main pier near first voussoir on the assembly unit basis of main pier; Away from first voussoir on the assembly unit basis of main pier away from main pier; Second voussoir is near main pier; The height of first voussoir is lower than second voussoir; The angle of inclination, bottom surface of No. 0 piece of the gradient that forms between the two end face and continuous beam is identical, and in steps A 20, the end face of first, second voussoir is connected with No. 0 piece reinforcing bar formwork integral hoisting platform full weld.
5. No. 0 piece rapid constructing method of continuous beam as claimed in claim 4 is characterized in that said assembly unit basis has six, and two adjacent row are used for No. 0 piece reinforcing bar of assembly unit formwork integral hoisting platform, and other row are as subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110411902.0A CN102493363B (en) | 2011-12-12 | 2011-12-12 | Quick construction method for segment No.0 of continuous beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110411902.0A CN102493363B (en) | 2011-12-12 | 2011-12-12 | Quick construction method for segment No.0 of continuous beam |
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| CN102493363A true CN102493363A (en) | 2012-06-13 |
| CN102493363B CN102493363B (en) | 2014-04-16 |
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Cited By (4)
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| CN103132463A (en) * | 2013-03-12 | 2013-06-05 | 中国建筑第六工程局有限公司 | Movable hanger operating platform and manufacturing, installing, using and removing methods thereof |
| CN104264592A (en) * | 2014-10-14 | 2015-01-07 | 中国水利水电第四工程局有限公司 | Construction method of continuous beam |
| CN110230259A (en) * | 2018-08-21 | 2019-09-13 | 中铁十八局集团有限公司 | A kind of pier top beam section that bridge cantilever pours and its rapid constructing method |
| CN111042000A (en) * | 2020-01-16 | 2020-04-21 | 中建七局安装工程有限公司 | Temporary supporting method for continuous beam construction of support pier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103132463A (en) * | 2013-03-12 | 2013-06-05 | 中国建筑第六工程局有限公司 | Movable hanger operating platform and manufacturing, installing, using and removing methods thereof |
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| CN104264592B (en) * | 2014-10-14 | 2016-08-24 | 中国水利水电第四工程局有限公司 | A kind of continuous beam construction method |
| CN110230259A (en) * | 2018-08-21 | 2019-09-13 | 中铁十八局集团有限公司 | A kind of pier top beam section that bridge cantilever pours and its rapid constructing method |
| CN110230259B (en) * | 2018-08-21 | 2021-05-28 | 中铁十八局集团有限公司 | Bridge cantilever casting pier top beam section and rapid construction method thereof |
| CN111042000A (en) * | 2020-01-16 | 2020-04-21 | 中建七局安装工程有限公司 | Temporary supporting method for continuous beam construction of support pier |
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| CN102493363B (en) | 2014-04-16 |
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Owner name: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Free format text: FORMER OWNER: CHINA ZHONGTIE MAJOR BRIDGE ENGINEERING CO., LTD. Effective date: 20150217 Owner name: NO.1 ENGINEERING CO., LTD., ZHONGTIE BRIDGE BUREAU Free format text: FORMER OWNER: NO.1 ENGINEERING CO., LTD., ZHONGTIE BRIDGE BUREAU GROUP GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Effective date: 20150217 |
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Effective date of registration: 20150217 Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Patentee after: No.1 Engineering Co., Ltd., Zhongtie Bridge Bureau Group Address before: 430074 Hubei province Wuhan Dongxin East Lake New Technology Development Zone Road SBI Venture Street No. 6 Building 12 layer Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. Patentee before: No.1 Engineering Co., Ltd., Zhongtie Bridge Bureau Group Patentee before: Group Co., Ltd., Zhongtie Daqiao Bureau |