CN103669226B - 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
CN103669226B
CN103669226B CN201310749434.7A CN201310749434A CN103669226B CN 103669226 B CN103669226 B CN 103669226B CN 201310749434 A CN201310749434 A CN 201310749434A CN 103669226 B CN103669226 B CN 103669226B
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upright post
bracket
pier stud
steel plate
concrete
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CN103669226A (en
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李老民
王丽梅
徐士林
陆海英
纪汶佐
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China Construction Sixth Engineering Division Co Ltd
China Construction Sixth Engineering Bureau Civil Engineering Co Ltd
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China Construction Sixth Engineering Division Co Ltd
China Construction Sixth Engineering Bureau Civil Engineering Co Ltd
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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 case beam 0# block stand construction method
Technical field
The present invention relates to a kind of across river box beam bracket construction method, particularly relate to a kind of across river variable cross-section prestressed concrete continuous beam case beam 0# block 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, at present the bridge crossing over great rivers is got more and more.And prestressed concrete continuous beam is because its span ability is large, construction method flexible, large, the antiseismic ability of strong adaptability, the rigidity of structure is strong, be open to traffic the features such as ride comfort is good and handsome in appearance, be more and more widely used at home at present.Prestressed concrete continuous beam 0# block refers to Main Pier of Bridges pier top case beam section, for cradle assembly provides work plane, as the first piece of beam section controlling the axis of bridge and the standard of elevation in cantilever pouring process, the precision that 0# block support is set up and the quality control on construction of safety and firmness to whole bridge play a part key.
The patent of having authorized is learnt by retrieval:
1 application number is: the Chinese patent of CN201220010497.1 discloses " support for deep water single pile Single column pier concrete box girder 0# block of constructing ", support disclosed in 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 be fixed on the subjective basis steel pile casting outer circumference surface of deep water single pile Single column pier and the multiple vertical stiffeners be distributed on around subjective basis steel pile casting; Anchor ear platform comprises the sleeve be set in outside deep water single pile Single column pier and the rectangular frame be set in outside sleeve, the lower end edge circumference of sleeve is uniform arranges multiple free bearing, rectangular frame by many hounds and free bearing hinged, anchor ear platform is assembled by the halved body divided 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 solves the problem of the concrete box girder 0# block constructional difficulties of deep water single pile Single column pier.But this patent solve be deep water single pile Single column pier concrete box girder 0# block support, be not suitable for be not single pile Single column pier across river variable cross-section prestressed concrete continuous beam case beam 0# block 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 used for assembled No. 0 block steel bar template integral hoisting platform; A20, while main pier is constructed, construction No. 0 block steel bar template integral hoisting platform of running simultaneously in described assembled basis, and No. 0 block steel bar template integral hoisting platform completes before main pier has been constructed; A30, lifting No. 0 block steel bar template integral hoisting platform, to main Dun Dunding, carry out No. 0 block main beam concrete and build and the stretch-draw mud jacking construction of beam body.The present invention, starting assembled No. 0 block steel bar template integral hoisting platform, installation form assembling reinforcement when constructing main pier bearing platform, pier shaft, not conflicting, greatly can shorten the construction period with main pier main body construction.But what this patent solved is Quick construction method for segment No.0 of continuous beam, start assembled No. 0 block steel bar template integral hoisting platform, installation form assembling reinforcement when constructing main pier bearing platform, pier shaft.Be not suitable for the case beam 0# block rack construction across river.
3 application numbers are: the Chinese patent of CN201020657068.4 discloses cantilever-cast continuous girder No.0 block quick construction equipment synchronous with substructure, this device is that up and down slideway beam is arranged on platform for lining, glide path beam is connected with firm between assembled, platform, glide path beam installs slipway beam, between glide path beam and sliding way beam, overlapping part fills sliding agent, and sliding way beam installs No. 0 block template reinforcing bar; Pier shaft is arranged on pier-side bracket, and pier-side bracket is connected with platform for lining, glide path beam, and install draw-gear in the glide direction termination of glide path beam, draw-gear connects No. 0 block template reinforcing bar.
4 application numbers are: the Chinese patent of CN201010586136.7 discloses cantilever-cast continuous girder No.0 block fast construction method synchronous with substructure and device, the method construction sequence is divided and is set up No.0 of continuous beam platform for lining when substructure pier construction in bridge center line side, mounting slip passage; Platform for lining is installed the support of No. 0 block construction, template, reinforcing bar and prestressing force tube bank; Installation pier-side bracket and slippage passage after pier construction completes, and by slippage passage and platform for lining slippage expanding channels; No. 0 block draw-gear is installed; By draw-gear by place for the integral slippings such as No. 0 block template, reinforcing bar; Carry out the pouring construction of No. 0 block concrete.Advantage: the every operation of reasonable arrangement, saves time, and shortens the construction period.The project that the is particularly suitable for overall duration causes the project 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# block beam body construction on the bank, superstructure 0# block 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 installation No. 0 block is constructed on platform for lining.By draw-gear by place for the integral slippings such as No. 0 block template, reinforcing bar, 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# block 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 Extended chemotherapy, be provided with two blocks of slippage steel plates above every bar sliding rail, this slippage steel plate moves under the effect of haulage gear on sliding rail; Every bar sliding rail is supported on Extended chemotherapy below by multiple track leveling support, and these bearings have leveling effect, makes whole piece sliding rail be that horizontal arrangement is on Extended chemotherapy.What this patent solved is the displacement problem of integral support system, the installation of the inapplicable case beam 0# block rack construction across river.
Summary of the invention
The object of the invention is to the feature overcoming prior art, provide a kind of support firm stable, safety high, bearing load is large and construction method is easy, save the one of cost duration across river prestressed concrete continuous beam case beam 0# block stand construction method.
One of the present invention is across river prestressed concrete continuous beam case beam 0# block stand construction method, and it comprises the following steps:
(1) on each group cushion cap, pour into a mould two row's concrete bracket basis respectively along pier stud long side direction in the left and right sides of pier stud 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 is arranged;
(2) pre-buried end steel plate on the concrete bracket basis end face described in each;
(3) on each pre-buried end steel plate of the same row's setting in inner side, weld the first bracket upright post respectively, each pre-buried end steel plate of the same row's setting in outside welds the second bracket upright post respectively;
(4) on same cushion cap, fixing mechanism is adopted to be fixedly connected with between two adjacent first bracket upright post of row's setting and between two adjacent second bracket upright post;
(5) each root first bracket upright post is connected with the pre-embedded steel slab in pier stud by i iron;
(6) top steel plate is welded with respectively on the top of each root first bracket upright post and each root second bracket upright post;
(7) on the top steel plate on the first bracket upright post top arranged with row and on the same top steel plate arranging the top of the second bracket upright post arranged, elongated crossbeam is welded with along bridge pier long side direction respectively;
(8) between two crossbeams of pier stud the same side by being connected with the many distribution beam that beam vertical is arranged, the crossbeam being positioned at two short brinks of the pier stud described in each is provided with regulating block, many longerons are connected with beam vertical by regulating block, are provided with the multiple tracks lumps of wood be arranged in parallel with crossbeam between every two longerons;
(9) middle cross beam one end is connected with the pre-buried junction steel plate at pier stud outside shorter side place and the other end is connected with longeron;
(10) bracket one end is welded with the pre-buried junction steel plate at pier stud minor face place and the other end is connected with longeron.
The beneficial effect of the inventive method is: 0# block support firm stable, safety are high, and 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 such 0# block bracket upright post is located.Fixing mechanism is all adopted to be fixedly connected with between first bracket upright post and between adjacent two second bracket upright post, like this from the stressed column in which direction all firm stable.Uniform for load is passed to column again by the installation of the connectors such as pre-embedded steel slab, top steel plate, crossbeam, longeron.So whole 0# block mounting system safety and stability.
Accompanying drawing explanation
Fig. 1 adopts a kind of longitudinal elevational schematic view of 0# block support of building across river prestressed concrete continuous beam case beam 0# block stand construction method of the present invention;
Fig. 2 is the horizontal elevational schematic view of the 0# block support shown in Fig. 1;
Fig. 3 is that in the 0# block 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# block support shown in Fig. 1.
Detailed description of the invention
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 case beam 0# block 12.
One of the present invention as shown in drawings is across river prestressed concrete continuous beam case beam 0# block stand construction method, it comprises the following steps: (1) is poured into a mould two row's concrete bracket basis 2 along pier stud long side direction respectively in the left and right sides of pier stud 5 and formed concrete bracket basis and two exclusive side concrete bracket basis 2 inside two rows on each group cushion cap 1, and concrete bracket basis 2 interval in each row's concrete bracket basis 2 is arranged.Ensure that the stability of bracket basis; (2) pre-buried end steel plate 3 on concrete bracket basis 2 end face described in each; (3) on each pre-buried end steel plate of the same row's setting in inner side, weld the first bracket upright post 4-1 respectively, each pre-buried end steel plate of the same row's setting in outside welds the second bracket upright post 4 respectively; (4) on same cushion cap 1, fixing mechanism is adopted to be fixedly connected with between two adjacent first bracket upright post 4-1 of row's setting and between two adjacent second bracket upright post 4; Preferred described fixing mechanism comprises multiple tracks upper and lower spaced stull 6 in the horizontal direction, arrange together being connected by multiple tracks stull 6 between two first bracket upright post or two second bracket upright post 4 of being disposed adjacent, between the twice stull be disposed adjacent, be diagonally 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) top steel plate 11 is welded with respectively on the top of each root first bracket upright post 4-1 and each root second bracket upright post 4; (7) on the top steel plate 11 on the first bracket upright post 4-1 top arranged with row and on the same top steel plate 11 arranging the top of the second bracket upright post 4 arranged, elongated crossbeam 10 is welded with along bridge pier long side direction respectively; (8) between two crossbeams 10 of pier stud 5 the same side by being connected with the vertically disposed many distribution beam 13 of crossbeam 10, the crossbeam 10 being positioned at two short brinks of the pier stud 5 described in each is provided with regulating block 15, many longerons 14 are connected with beam 10 is vertical by regulating block 15, are provided with the multiple tracks lumps of wood 18 be arranged in parallel with crossbeam 10 between every two longerons 14; (9) middle cross beam 16 one end is connected with the pre-buried junction steel plate at pier stud outside shorter side place and the other end is connected with longeron; (10) bracket 17 one end is welded with the pre-buried junction steel plate at pier stud minor face place and the other end is connected with longeron 14.
Embodiment 1
(1) on each group cushion cap 1, pour into a mould two row's concrete bracket basis 2 respectively along pier stud long side direction in the left and right sides of pier stud 5 and form concrete bracket basis and two exclusive side concrete bracket basis 2 inside two rows, concrete bracket basis 2 interval in each row's concrete bracket basis 2 is arranged.Ensure that the stability of bracket basis; (2) pre-buried end steel plate 3 on concrete bracket basis 2 end face described in each; (3) on each pre-buried end steel plate of the same row's setting in inner side, weld the first bracket upright post 4-1 respectively, each pre-buried end steel plate of the same row's setting in outside welds the second bracket upright post 4 respectively; (4) on same cushion cap 1, fixing mechanism is adopted to be fixedly connected with between two adjacent first bracket upright post 4-1 of row's setting and between two adjacent second bracket upright post 4; Described fixing mechanism comprises multiple tracks upper and lower spaced stull 6 in the horizontal direction, arrange together being connected by multiple tracks stull 6 between two first bracket upright post or two second bracket upright post 4 of being disposed adjacent, between the twice stull be disposed adjacent, be diagonally 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) top steel plate 11 is welded with respectively on the top of each root first bracket upright post 4-1 and each root second bracket upright post 4; (7) on the top steel plate 11 on the first bracket upright post 4-1 top arranged with row and on the same top steel plate 11 arranging the top of the second bracket upright post 4 arranged, elongated crossbeam 10 is welded with along bridge pier long side direction respectively; (8) between two crossbeams 10 of pier stud 5 the same side by being connected with the vertically disposed many distribution beam 13 of crossbeam 10, the crossbeam 10 being positioned at two short brinks of the pier stud 5 described in each is provided with regulating block 15, many longerons 14 are connected with crossbeam 10 is vertical by regulating block 15, are provided with the multiple tracks lumps of wood 18 be arranged in parallel with crossbeam 10 between every two longerons 14; (9) middle cross beam 16 one end is connected with the pre-buried junction steel plate at pier stud outside shorter side place and the other end is connected with longeron; (10) bracket 17 one end is welded with the pre-buried junction steel plate at pier stud minor face place and the other end is connected with longeron 14.
After testing: 0# block support firm stable, safety are high, and 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# block bracket upright post is located.All adopt fixing mechanism to be fixedly connected with between first bracket upright post and between adjacent two second bracket upright post, in construction, subjected to the stressed of all directions, and column all firm stable.Transmission uniform for load is given column again by the reliable installation of the connectors such as pre-embedded steel slab, top steel plate, crossbeam, longeron.So whole 0# block mounting system safety and stability, in construction, successfully build 0# block case beam.

Claims (2)

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

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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
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
CN106381810B (en) * 2016-08-31 2018-01-30 中铁十四局集团第四工程有限公司 With the cast-in-place outstanding method for filling beam of beam-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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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

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