CN103669226A - River-crossing prestressed concrete continuous beam bridge box girder 0# block support construction method - Google Patents

River-crossing prestressed concrete continuous beam bridge box girder 0# block support construction method Download PDF

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Publication number
CN103669226A
CN103669226A CN201310749434.7A CN201310749434A CN103669226A CN 103669226 A CN103669226 A CN 103669226A CN 201310749434 A CN201310749434 A CN 201310749434A CN 103669226 A CN103669226 A CN 103669226A
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upright post
bracket
row
pier stud
steel plate
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CN201310749434.7A
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Chinese (zh)
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CN103669226B (en
Inventor
李老民
王丽梅
徐士林
陆海英
纪汶佐
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中建六局土木工程有限公司
中国建筑第六工程局有限公司
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Priority to CN201310749434.7A priority Critical patent/CN103669226B/en
Publication of CN103669226A publication Critical patent/CN103669226A/en
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Abstract

The invention discloses a river-crossing prestressed concrete continuous beam bridge box girder 0# block support construction method. The method includes the following steps that firstly, two rows of concrete support foundations are casted on the left side of a pier stud in the long-edge direction of the pier stud on each set of bearing platform, and two rows of concrete support foundations are casted on the right side of the pier stud in the long-edge direction of the pier stud on each set of bearing platform; secondly, bottom steel plates are pre-buried on the top faces of the concrete support foundations respectively; thirdly, first support stand columns are welded to pre-buried bottom steel plates arranged on the same row of the inner side, and second support stand columns are welded to pre-buried bottom steel plates arranged on the same row of the outer side respectively; fourthly, each first support stand column is connected with a corresponding adjacent second support stand column through a fixing connection structure; fifthly, the first support stand columns are connected with the pier stud; sixthly, long through cross beams are welded to top steel plates, wherein the top steel plates are arranged at the top ends of the first and second support stand columns arranged on the same row; eighthly, every two cross beams located on the same side of the pier stud are connected through a plurality of distribution beams. Due to the adoption of the method, a 0# block support system is safe and stable.

Description

A kind of across river prestressed concrete continuous beam bridge case beam 0# piece stand construction method

Technical field

The present invention relates to a kind ofly across river box beam bracket construction method, relate in particular to a kind of across river variable cross-section prestressed concrete continuous beam bridge case beam 0# piece stand construction method.

Background technology

Along with the fast development day by day of Chinese national economy, it is growing that construction of road and bridge is invested.In bridge construction, more and more for the bridge of crossing over great rivers at present.And prestressed concrete continuous beam bridge because its span ability is large, construction method flexibly, strong, the features such as ride comfort is good and handsome in appearance that are open to traffic of strong adaptability, large, the antiseismic ability of the rigidity of structure, be more and more widely used at home at present.Prestressed concrete continuous beam bridge 0# piece refers to Main Pier of Bridges pier top case beam section, for cradle assembly provides work plane, in cantilever pouring process, as first beam section controlling the axis of bridge and the standard of elevation, precision and safety and firmness that 0# piece support is set up play a part crucial to the quality control on construction of whole bridge.

By retrieval, learn the patent of having authorized:

1 application number is: the Chinese patent of CN201220010497.1 discloses " for the support of the only stub concrete box girder of the deep water single pile 0# piece of constructing ", the disclosed support of this utility model, comprise: stent support, anchor ear platform, bracket upright post and 0# block concrete pouring construction platform, stent support comprises the doughnut-shaped steel plate on the subjective basis steel casing outer circumference surface that is fixed on the only stub of deep water single pile and is distributed on subjective basis steel casing a plurality of vertical stiffeners around; Anchor ear platform comprises and is set in the sleeve outside the only stub of deep water single pile and is set in the rectangular frame outside sleeve, the lower end edge of sleeve is circumferentially uniform arranges a plurality of free bearings, rectangular frame is hinged by many hounds and free bearing, and anchor ear platform is assembled by the halved body of dividing equally vertically; Bracket upright post is fixed on the end face of anchor ear platform; 0# block concrete pouring construction platform is fixed on the end face of bracket upright post.This utility model has solved the problem of the concrete box girder 0# piece constructional difficulties of the only stub of deep water single pile.But this patent solves, be that the concrete box girder 0# piece of the only stub of deep water single pile supports, be not suitable for be not the only stub of single pile across river variable cross-section prestressed concrete continuous beam bridge case beam 0# piece support.

2 application numbers are: the Chinese patent of CN201110411902.0 discloses " Quick construction method for segment No.0 of continuous beam ", the method comprises the following steps: A10, in the pier position of main pier other along bridge to the assembled basis of construction, described assembled basis is for assembled No. 0 piece reinforcing bar formwork integral hoisting platform; A20, in the construction of main pier, No. 0 piece reinforcing bar formwork integral hoisting platform of construction of running simultaneously on described assembled basis, and No. 0 piece reinforcing bar formwork integral hoisting platform completes before main pier has been constructed; 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.The present invention starts assembled No. 0 piece reinforcing bar formwork integral hoisting platform, installation form assembling reinforcement when construction main pier bearing platform, pier shaft, does not conflict with main pier main body construction, can greatly shorten the construction period.But what this patent solved is Quick construction method for segment No.0 of continuous beam, when construction main pier bearing platform, pier shaft, start assembled No. 0 piece reinforcing bar formwork integral hoisting platform, installation form assembling reinforcement.Be not suitable for the case beam 0# piece rack construction across river.

3 application numbers are: the Chinese patent of CN201020657068.4 discloses cantilever-cast continuous girder No.0 block and synchronizeed quick construction equipment with substructure, this device is that up and down slideway beam is arranged on platform for lining, firm connection between glide path beam and assembled, platform, on glide path beam, install slipway beam, between glide path beam and sliding way beam, overlapping part fills sliding agent, and piece template reinforcing bar is installed No. 0 on sliding way beam; Pier shaft is arranged on pier-side bracket, and pier-side bracket is connected with platform for lining, glide path beam, in the glide direction termination of glide path beam, draw-gear is installed, and draw-gear connects No. 0 piece template reinforcing bar.

4 application numbers are: the Chinese patent of CN201010586136.7 discloses cantilever-cast continuous girder No.0 block and synchronizeed fast construction method and device with substructure, the method construction sequence is divided when substructure pier construction and in bridge center line one side, is set up No.0 of continuous beam platform for lining, mounting slip passage; Support, template, reinforcing bar and the prestressing force tube bank of No. 0 piece construction are installed on platform for lining; Installation pier-side bracket and slippage passage after pier construction completes, and slippage passage is connected with platform for lining slippage passage; Piece draw-gear is installed No. 0; By draw-gear, the integral slippings such as No. 0 piece template, reinforcing bar is in place; Carry out the pouring construction of No. 0 block concrete.Advantage: the every operation of reasonable arrangement, save time, shorten the construction period.The overall duration of the project that is particularly suitable for causes the projects such as follow-up duration, construction organization pressure anomaly anxiety with regard to short or gene basis construction delays.Range of application has superstructure 0# piece beam body construction on the bank, superstructure 0# piece beam body construction waterborne; Low pier beam body or high pier beam body.

What 3-4 item patent solved is support, template, reinforcing bar and the prestressing force tube bank that No. 0 piece construction is installed on platform for lining.By draw-gear, the integral slippings such as No. 0 piece template, reinforcing bar is in place, the reliable soundness of the seating position of the platform for lining in these two patents be can't see.Be not suitable for the case beam 0# piece rack construction across river.

5 application numbers are: the Chinese patent of CN200910209251.X discloses floor steel pipe column bracket of bridge end bay closure section construction integral slide device and method, this device comprises stand and haulage gear, and two sliding rails are arranged symmetrically on expansion basis, above every sliding rail, be provided with two blocks of slippage steel plates, this slippage steel plate moves under the effect of haulage gear on sliding rail; Every sliding rail is supported on and expands basis above below by a plurality of track leveling supports, and these bearings have leveling effect, makes whole piece sliding rail be horizontal arrangement and is expanding on basis.What this patent solved is the displacement problem of integral support system, the installation of the inapplicable case beam 0# piece rack construction across river.

Summary of the invention

The object of the invention is to overcome the feature of prior art, a kind of support firm stable, safe is provided, bearing load is large and construction method is easy, save a kind of across river prestressed concrete continuous beam bridge case beam 0# piece stand construction method of cost duration.

Of the present invention a kind of across river prestressed concrete continuous beam bridge case beam 0# piece stand construction method, it comprises the following steps:

(1) on each group cushion cap, along pier stud long side direction, in the left and right sides of pier stud, pour into a mould respectively two row's concrete bracket basis and form two row's inner side concrete bracket basis and two exclusive side concrete bracket basis, the concrete bracket basis interval in each row's concrete bracket basis arranges;

(2) pre-buried end steel plate on the concrete bracket basis end face described in each;

(3) on each the pre-buried end steel plate arranging with row in inner side, weld respectively the first bracket upright post, on each the pre-buried end steel plate arranging with row in outside, weld respectively the second bracket upright post;

(4) between two adjacent the first bracket upright post that arrange with row on same cushion cap and between two adjacent the second bracket upright post, adopt fixing mechanism to be fixedly connected with;

(5) each root first bracket upright post is connected with the pre-embedded steel slab in pier stud by i iron;

(6) on the top of each root first bracket upright post and each root the second bracket upright post, be welded with respectively top steel plate;

(7) on the top steel plate on the first bracket upright post top arranging with row and on the top steel plate on the top of the second bracket upright post arranging with row, along bridge pier long side direction, be welded with elongated crossbeam respectively;

(8) between two crossbeams of pier stud the same side, by many distribution beam that arrange with beam vertical, be connected, be positioned on the crossbeam of two short brinks of the pier stud described in each regulating block is installed, many longerons are connected with beam vertical by regulating block, between every two longerons, the multiple tracks lumps of wood be arrangeding in parallel with crossbeam are installed;

(9) middle cross beam one end is connected with the pre-buried junction steel plate at minor face place outside pier stud and the other end is connected with longeron;

(10) bracket one end is connected with longeron with pre-buried junction steel plate welding and the other end at pier stud minor face place.

The beneficial effect of the inventive method is: 0# piece support firm stable, safe, bearing load is large and construction method is easy.On cushion cap, construction has concrete bracket basis and end steel plate, the foundation bearing capacity firm stable that 0# piece bracket upright post is located like this.Between the first bracket upright post and between two adjacent the second bracket upright post, all adopt fixing mechanism to be fixedly connected with, like this from the stressed column of which direction firm stable all.The installation of the connectors such as pre-embedded steel slab, top steel plate, crossbeam, longeron again by load uniform pass to column.So whole 0# piece mounting system safety and stability.

Accompanying drawing explanation

Fig. 1 adopts a kind of longitudinal elevational schematic view of 0# piece support of building across river prestressed concrete continuous beam bridge case beam 0# piece stand construction method of the present invention;

Fig. 2 is the horizontal elevational schematic view of the 0# piece support shown in Fig. 1;

Fig. 3 is that in the 0# piece support shown in Fig. 1, pier stud is connected schematic top plan view with bracket upright post;

Fig. 4 is the partial top view of the 0# piece support shown in Fig. 1.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

This method is applicable to installing across river prestressed concrete continuous beam bridge case beam 0# piece 12.

Of the present invention a kind of across river prestressed concrete continuous beam bridge case beam 0# piece stand construction method as shown in drawings, it comprises the following steps: (1) is poured into a mould respectively two row's concrete bracket basis 2 and formed two row's inner side concrete bracket basis and two exclusive side concrete bracket basis 2 on each group cushion cap 1 in the left and right sides of pier stud 5 along pier stud long side direction, concrete bracket basis 2 intervals in each row's concrete bracket basis 2 arrange.Guaranteed the stability of bracket basis; (2) pre-buried end steel plate 3 on concrete bracket basis 2 end faces described in each; (3) on each the pre-buried end steel plate arranging with row in inner side, weld respectively the first bracket upright post 4-1, on each the pre-buried end steel plate arranging with row in outside, weld respectively the second bracket upright post 4; (4) between two adjacent the first bracket upright post 4-1 that arrange with row on same cushion cap 1 and between two adjacent the second bracket upright post 4, adopt fixing mechanism to be fixedly connected with; Preferred described fixing mechanism comprises the upper and lower spaced stull 6 of multiple tracks along continuous straight runs, between two the first bracket upright post of the adjacent setting of same row or two the second bracket upright post 4, by multiple tracks stull 6, be connected, between the twice stull of adjacent setting, along diagonal, be welded with bridging 7.(5) each root first bracket upright post 4-1 is connected with the pre-embedded steel slab 9 in pier stud 5 by i iron 8; (6) on the top of each root first bracket upright post 4-1 and each root the second bracket upright post 4, be welded with respectively top steel plate 11; (7) on the top steel plate 11 on the first bracket upright post 4-1 top arranging with row and on the top steel plate 11 on the top of the second bracket upright post 4 arranging with row, along bridge pier long side direction, be welded with elongated crossbeam 10 respectively; (8) between two crossbeams 10 of pier stud 5 the same sides by being connected with the vertically disposed many distribution beam 13 of crossbeam 10, be positioned on the crossbeam 10 of two short brinks of the pier stud 5 described in each regulating block 15 is installed, many longerons 14 are connected with beam 10 is vertical by regulating block 15, between every two longerons 14, the multiple tracks lumps of wood 18 be arrangeding in parallel with crossbeam 10 are installed; (9) middle cross beam 16 one end are connected with the pre-buried junction steel plate at minor face place outside pier stud and the other end is connected with longeron; (10) bracket 17 one end are connected with longeron 14 with pre-buried junction steel plate welding and the other end at pier stud minor face place.

Embodiment 1

(1) on each group cushion cap 1, along pier stud long side direction, in the left and right sides of pier stud 5, pour into a mould respectively two row's concrete bracket basis 2 and form two row's inner side concrete bracket basis and two exclusive side concrete bracket basis 2, concrete bracket basis 2 intervals in each row's concrete bracket basis 2 arrange.Guaranteed the stability of bracket basis; (2) pre-buried end steel plate 3 on concrete bracket basis 2 end faces described in each; (3) on each the pre-buried end steel plate arranging with row in inner side, weld respectively the first bracket upright post 4-1, on each the pre-buried end steel plate arranging with row in outside, weld respectively the second bracket upright post 4; (4) between two adjacent the first bracket upright post 4-1 that arrange with row on same cushion cap 1 and between two adjacent the second bracket upright post 4, adopt fixing mechanism to be fixedly connected with; Described fixing mechanism comprises the upper and lower spaced stull 6 of multiple tracks along continuous straight runs, between two the first bracket upright post of the adjacent setting of same row or two the second bracket upright post 4, by multiple tracks stull 6, be connected, between the twice stull of adjacent setting, along diagonal, be welded with bridging 7.(5) each root first bracket upright post 4-1 is connected with the pre-embedded steel slab 9 in pier stud 5 by i iron 8; (6) on the top of each root first bracket upright post 4-1 and each root the second bracket upright post 4, be welded with respectively top steel plate 11; (7) on the top steel plate 11 on the first bracket upright post 4-1 top arranging with row and on the top steel plate 11 on the top of the second bracket upright post 4 arranging with row, along bridge pier long side direction, be welded with elongated crossbeam 10 respectively; (8) between two crossbeams 10 of pier stud 5 the same sides by being connected with the vertically disposed many distribution beam 13 of crossbeam 10, be positioned on the crossbeam 10 of two short brinks of the pier stud 5 described in each regulating block 15 is installed, many longerons 14 are connected with crossbeam 10 is vertical by regulating block 15, between every two longerons 14, the multiple tracks lumps of wood 18 be arrangeding in parallel with crossbeam 10 are installed; (9) middle cross beam 16 one end are connected with the pre-buried junction steel plate at minor face place outside pier stud and the other end is connected with longeron; (10) bracket 17 one end are connected with longeron 14 with pre-buried junction steel plate welding and the other end at pier stud minor face place.

After testing: 0# piece support firm stable, safe, bearing load is large and construction method is easy.On cushion cap, construction has concrete bracket basis and end steel plate, the foundation bearing capacity firm stable that 0# piece bracket upright post is located.Between the first bracket upright post and between two adjacent the second bracket upright post, all adopt fixing mechanism to be fixedly connected with, in construction, stood the stressed of all directions, and column firm stable all.The reliable installation of the connectors such as pre-embedded steel slab, top steel plate, crossbeam, longeron again by load uniform passed to column.So whole 0# piece mounting system safety and stability, has successfully built 0# piece case beam in construction.

Claims (2)

1. across a river prestressed concrete continuous beam bridge case beam 0# piece stand construction method, it is characterized in that it comprises the following steps:
(1) on each group cushion cap, along pier stud long side direction, in the left and right sides of pier stud, pour into a mould respectively two row's concrete bracket basis and form two row's inner side concrete bracket basis and two exclusive side concrete bracket basis, the concrete bracket basis interval in each row's concrete bracket basis arranges;
(2) pre-buried end steel plate on the concrete bracket basis end face described in each;
(3) on each the pre-buried end steel plate arranging with row in inner side, weld respectively the first bracket upright post, on each the pre-buried end steel plate arranging with row in outside, weld respectively the second bracket upright post;
(4) between two adjacent the first bracket upright post that arrange with row on same cushion cap and between two adjacent the second bracket upright post, adopt fixing mechanism to be fixedly connected with;
(5) each root first bracket upright post is connected with the pre-embedded steel slab in pier stud by i iron;
(6) on the top of each root first bracket upright post and each root the second bracket upright post, be welded with respectively top steel plate;
(7) on the top steel plate on the first bracket upright post top arranging with row and on the top steel plate on the top of the second bracket upright post arranging with row, along bridge pier long side direction, be welded with elongated crossbeam respectively;
(8) between two crossbeams of pier stud the same side, by many distribution beam that arrange with beam vertical, be connected, be positioned on the crossbeam of two short brinks of the pier stud described in each regulating block is installed, many longerons are connected with beam vertical by regulating block, between every two longerons, the multiple tracks lumps of wood be arrangeding in parallel with crossbeam are installed;
(9) middle cross beam one end is connected with the pre-buried junction steel plate at minor face place outside pier stud and the other end is connected with longeron;
(10) bracket one end is connected with longeron with pre-buried junction steel plate welding and the other end at pier stud minor face place.
2. according to claim 1 across river prestressed concrete continuous beam bridge case beam 0# piece stand construction method, it is characterized in that: described fixing mechanism comprises the upper and lower spaced stull of multiple tracks along continuous straight runs, between two the first bracket upright post of the adjacent setting of same row or two the second bracket upright post, by multiple tracks stull, be connected, between the twice stull of adjacent setting, along diagonal, be welded with bridging.
CN201310749434.7A 2013-12-25 2013-12-25 River-crossing prestressed concrete continuous beam bridge box girder 0# block support construction method CN103669226B (en)

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CN201310749434.7A CN103669226B (en) 2013-12-25 2013-12-25 River-crossing prestressed concrete continuous beam bridge box girder 0# block support construction method

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CN201310749434.7A CN103669226B (en) 2013-12-25 2013-12-25 River-crossing prestressed concrete continuous beam bridge box girder 0# block support construction method

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CN103669226B CN103669226B (en) 2015-07-01

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN104404884A (en) * 2014-11-25 2015-03-11 中建六局第三建筑工程有限公司 Bracket used for overlong water pier pre-stress cover beam construction support system
CN106381810A (en) * 2016-08-31 2017-02-08 中铁十四局集团第四工程有限公司 Beam-and-column type bracket and method for casting-in-place cantilever perfusion beam with beam-and-column type bracket
CN106758839A (en) * 2016-12-27 2017-05-31 中铁二局集团有限公司 A kind of strutting system and its installation method of the cast-in-place segmental construction of pier top

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007198055A (en) * 2006-01-27 2007-08-09 Mitsui Eng & Shipbuild Co Ltd Bridge structure made of synthetic floor plate
CN201720833U (en) * 2010-04-20 2011-01-26 中国一冶集团有限公司 Operating platform for quickly mounting steel box girder cantilevers and treating cantilever welds
CN102995561A (en) * 2011-09-19 2013-03-27 曹新恒 Universal bridge cast-in-place support
CN203270461U (en) * 2013-04-27 2013-11-06 中国建筑第六工程局有限公司 Bailey beam support without buttress in soft foundation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007198055A (en) * 2006-01-27 2007-08-09 Mitsui Eng & Shipbuild Co Ltd Bridge structure made of synthetic floor plate
CN201720833U (en) * 2010-04-20 2011-01-26 中国一冶集团有限公司 Operating platform for quickly mounting steel box girder cantilevers and treating cantilever welds
CN102995561A (en) * 2011-09-19 2013-03-27 曹新恒 Universal bridge cast-in-place support
CN203270461U (en) * 2013-04-27 2013-11-06 中国建筑第六工程局有限公司 Bailey beam support without buttress in soft foundation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN104404884A (en) * 2014-11-25 2015-03-11 中建六局第三建筑工程有限公司 Bracket used for overlong water pier pre-stress cover beam construction support system
CN104404884B (en) * 2014-11-25 2016-03-30 中建六局第三建筑工程有限公司 For the support of pier prestressed cap beam with extra length Construction Supporting System in water
CN106381810A (en) * 2016-08-31 2017-02-08 中铁十四局集团第四工程有限公司 Beam-and-column type bracket and method for casting-in-place cantilever perfusion beam with beam-and-column type bracket
CN106758839A (en) * 2016-12-27 2017-05-31 中铁二局集团有限公司 A kind of strutting system and its installation method of the cast-in-place segmental construction of pier top

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