CN104831639A - Consolidation and release construction method for 0# blocks of ultra-wide non-uniform continuous beam - Google Patents

Consolidation and release construction method for 0# blocks of ultra-wide non-uniform continuous beam Download PDF

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Publication number
CN104831639A
CN104831639A CN201510242570.6A CN201510242570A CN104831639A CN 104831639 A CN104831639 A CN 104831639A CN 201510242570 A CN201510242570 A CN 201510242570A CN 104831639 A CN104831639 A CN 104831639A
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China
Prior art keywords
block
continuous
pier
binder
steel pipe
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CN201510242570.6A
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CN104831639B (en
Inventor
袁银书
王丽梅
朱建华
张钊
王彦虎
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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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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • E01D21/10Cantilevered erection
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced

Abstract

The invention discloses a consolidation and release construction method for 0# blocks of an ultra-wide non-uniform continuous beam. The method comprises the following steps: respectively mounting steel pipe columns on the left side and the right side of each continuous pier as temporary piers, and connecting every two adjacent steel pipe columns in the same row through a connecting tie; connecting each steel pipe column and an embedded part on the side wall of the continuous pier on the adjacent side by adopting an upper tie beam and a lower tie beam; pouring two rows of reinforced concrete temporary consolidation blocks on the left side and the right side of the pier top of each continuous pier; respectively fixing a bearing pad stone on the front side and the rear side of the middle of the pier top of each continuous pier; respectively fixing a spherical steel bearing on each bearing pad stone; fixing a plurality of cushion blocks on each upper tie beam; fixing a distribution beam on each cushion block; respectively fixing a triangular bottom die bent frame on each of the multiple distribution beams on each side; carrying out 0# block pouring on each triangular bottom die bent frame; cutting off the reinforced concrete temporary consolidation blocks and the steel pipe columns before middle-span closure of box beam blocks on every two adjacent continuous piers. Due to the adoption of the method disclosed by the invention, the engineering quality is improved.

Description

A kind of ultra-wide nonprismatic continuous beam 0# block consolidation and releasing construction method
Technical field
The present invention relates to bridge 0# block temporary consolidation and remove construction method, particularly relate to ultra-wide nonprismatic continuous beam 0# block steel pipe frame method and temporary consolidation and remove integral construction method.
Background technology
In recent years, along with the continuous progress of the developing rapidly of national economy, science and technology, bridge Construction Technology obtains the development of making rapid progress, and Longspan Bridge application is more and more extensive, has started the new situation of bridge construction.Continuous beam cantilever casting method is one of main method of China's large span prestressed concrete Construction of continuous beam, and 0# block is then the Focal point and difficult point position of construction.The prerequisite of cradle cantilever construction is the continuous pier of temporary consolidation, makes beam body convert statically determinate structrue to by unstable system temporarily.When conventional method for ultra-wide nonprismatic continuous beam 0# block consolidation adopts 0# block construction with brackets, a basis part for support is cushion cap, and another part is ground foundation, easily forms very large differential settlement.And the bracket basis not on cushion cap needs to process, and so virtually adds cost, has dragged slowly the duration.During the construction of conventional stent method, support only bears vertical force when 0# constructs, and the pulling force that when not bearing in construction, unbalanced moment produces, safety obviously reduces.
The patent of having authorized is learnt by retrieval:
1 application number is that the Chinese patent of 200710173653X discloses " pier top supportless temporary consolidation technique ", comprising: 1. arrange four pieces of pressure blocks at middle Dun Dunding, and pressure block indulges bridge to long 60cm, the long 160cm of direction across bridge, high 80cm; Pressure block is made up of two parts: lower floor is C55 steel concrete, cast-in-place when pier stud is constructed; Upper strata is grout blanket, thickness 3 ~ 5cm, fills closely knit after middle Dun Dun pushes up section case beam hoisted in position with grouting material; 2. reserved 10cm duct in pier stud top and pier top section case beam, arranges 2 rows, 4 " U " type prestressed strands, in pier top section case beam pressure block top layer grouting in place, interim post tensioning anchoring.Although this patent is also arrange that interim pressure-bearing is fast at Dun Ding, be aided with anchoring temporarily steel bundle, pressure block is utilized to bear upper load, but adopt between pier stud and pier top section case beam, design the pier top supportless temporary consolidation technique that " U " type prestressed strand resists overturning moment, when No. 0 block is long, this consolidation technique stress system cannot support.
2 application numbers be 2011103836844 Chinese patent disclose " cantilever pouring joist steel pipe concrete temporary consolidation system ", comprise supporting steel pipe, H profile steel, concrete, fining twisted steel, with Flange joint between supporting steel pipe and the pre-buried fining twisted steel of cushion cap, concrete perfusion in supporting steel pipe, H profile steel one end is welded with pier stud pier top built-in fitting, as sustaining wall measure and case beam initial segment cast-in-place support through supporting steel pipe; Consolidation system is connected into fining twisted steel stretch-draw between supporting steel pipe and case beam.The temporary consolidation of this patent is mainly by connecting into consolidation system with fining twisted steel stretch-draw between supporting steel pipe and case beam, stressed load is less, be not suitable for wide cross section case beam, and fining twisted steel to be cut short in the future, can reduce the stressed load of box girder web like this.
3 application numbers be 2013103826199 Chinese patent disclose " H type double column pier wide-bridge-surface cantilever temporary consolidation structure and construction method thereof ", its structure comprises concrete bearing platform, be positioned at the box-type continuous beam above concrete bearing platform, connect many support posts of concrete bearing platform and box-type continuous beam, support post divides two row's symmetries to stand on the both sides, front and back of pier stud, the corner of concrete bearing platform, along the left and right sides of direction across bridge, be arranged with four brackets of building with concrete bearing platform and being integrated respectively, be connected with along vertical bridge to symmetrical four skewed horizontal load posts between bracket and box-type continuous beam, support post and skewed horizontal load post are steel pipe column, the base plate of box-type continuous beam is provided with cast-in-place brace summer, between brace summer and concrete bearing platform, all be connected drawing by prestress fine rolled twisted bar uniform in steel pipe column between brace summer with bracket.This patent is applicable H type twin shaft pier, is not suitable for rectangular pier columns.And the trussed construction of the support post of this patent well can not resist unbalanced moment, and waste material.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of and can bear the pulling force that in work progress, vertical force and opposing unbalanced moment produce, the ultra-wide nonprismatic continuous beam 0# block consolidation that differential settlement is minimum, safety is high and releasing construction method.
A kind of ultra-wide nonprismatic continuous beam 0# block consolidation of the present invention and releasing construction method, it comprises the following steps:
(1) one row's steel pipe column being installed respectively as Temporary Piers in the left and right sides of continuous pier along direction across bridge, connecting with connecting system between the adjacent steel tubing string with row;
(2) binder and lower binder is adopted to be weldingly connected in the horizontal direction respectively by between the built-in fitting on the continuous pier sidewall of each steel pipe column and sides adjacent, described upper binder and lower binder extend to outside steel pipe column, adopt cant beam to be fixedly linked between the outside of the upper binder on same steel pipe column and lower binder;
(3) build along direction across bridge respectively in the Dun Ding left and right sides of continuous pier and be fixed with two placing of reinforcement concrete temporary consolidation blocks, the vertical reinforcement of described temporary consolidation block stretches out the block top of temporary consolidation block, for fixing with the bar connecting of to be cast No. 0 block;
(4) before and after in the middle of the pier top of continuous pier, both sides fix a bearing pad stone respectively, each described bearing pad stone is reserved with four ducts, then on each bearing pad stone, a spherical steel support is fixed respectively, the top board of spherical steel support is provided with four supporting legs, the bed bolt of described spherical steel support is screwed in four reserving hole channels on bearing pad stone respectively, and is in the milk in duct;
(5) on described upper binder, fix multiple cushion block, each described cushion block fixes a distribution beam, and described distribution beam is perpendicular to upper binder;
(6) in the multiple described distribution beam of every side, fix an end face and the suitable triangle bed die framed bent of to be cast No. 0 block bottom shape respectively;
(7) on described triangle bed die framed bent, first building of No. 0 block is carried out, while building No. 0 block, four of spherical steel support supporting legs to be poured in No. 0 block concrete and the bar connecting of the vertical reinforcement of temporary consolidation block and No. 0 block is fixed, and then symmetry builds the case beam block of No. 0 block both sides successively, till closing up leading portion with adjacent continuous pier span centre;
(8), before the case beam block span centre on two adjacent continuous piers closes up, adopt smart steel cable sawing except steel concrete temporary consolidation block and steel pipe column.
Employing the invention has the beneficial effects as follows: the present invention pushes up direction across bridge at continuous Dun Dun and arranges two groups of steel concrete temporary consolidation blocks, mainly bear the vertical force in work progress, and on each continuous pier direction across bridge cushion cap, arrange that two row's steel pipe columns are as Temporary Piers, the pulling force that opposing unbalanced moment produces, convert continuous pier 0# block to statically determinate structrue by unstable system temporarily, for cradle cantilever construction provides condition, ensure that workmanship.Before full-bridge closes up, namely after rigid support welding, continuous pier steel concrete temporary consolidation block and steel pipe column Temporary Piers to be excised fast, thoroughly, convert bridge system to statically determinate structrue by statically-indeterminate structure.In order to excise continuous pier steel structure concrete temporary consolidation block efficiently, smart steel cable is adopted to reduce cost with sawing technology effective, save the duration, improve workmanship.
Accompanying drawing explanation
Fig. 1 adopts a kind of ultra-wide nonprismatic continuous beam 0# block consolidation of the present invention and removes the longitudinal elevational schematic view of construction method;
Fig. 2 is a kind of ultra-wide nonprismatic continuous beam 0# block consolidation shown in Fig. 1 and the built-in fitting schematic diagram removing joint steel pipe post on the continuous pier of construction method;
Fig. 3 is a kind of ultra-wide nonprismatic continuous beam 0# block consolidation shown in Fig. 1 and removes construction method steel concrete temporary consolidation block and bearing pad stone schematic top plan view.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of ultra-wide nonprismatic continuous beam 0# block consolidation of the present invention as shown in drawings and releasing construction method, it comprises the following steps:
(1) installing row's steel pipe column 1 respectively as Temporary Piers in the left and right sides of continuous pier 11 along direction across bridge, is 12 connections with connecting between the adjacent steel tubing string with row;
(2) binder 4 and lower binder 3 is adopted to be weldingly connected in the horizontal direction respectively by between the built-in fitting 10 on the continuous pier sidewall of each steel pipe column 1 and sides adjacent, described upper binder 4 and lower binder 3 extend to outside steel pipe column 1, adopt cant beam 5 to be fixedly linked between the outside of the upper binder 4 on same steel pipe column 1 and lower binder 3;
(3) build along direction across bridge respectively in the Dun Ding left and right sides of continuous pier 11 and be fixed with two placing of reinforcement concrete temporary consolidation blocks 9, the vertical reinforcement of described temporary consolidation block 9 stretches out the block top of temporary consolidation block 9, for fixing with the bar connecting of to be cast No. 0 block; Every placing of reinforcement concrete temporary consolidation block 9 direction across bridge can establish three in interval.
(4) before and after in the middle of the pier top of continuous pier 11, both sides fix a bearing pad stone 13 respectively, each described bearing pad stone is reserved with four ducts, then on each bearing pad stone 13, a spherical steel support 14 is fixed respectively, the top board of spherical steel support 14 is provided with four supporting legs, the bed bolt of described spherical steel support is screwed in four reserving hole channels on bearing pad stone respectively, and is in the milk in duct.
(5) on described upper binder 4, fix multiple cushion block 6, each described cushion block 6 fixes a distribution beam 7, and described distribution beam 7 is perpendicular to upper binder 4;
(6) in the multiple described distribution beam 7 of every side, fix an end face and the suitable triangle bed die framed bent 8 of to be cast No. 0 block 2 bottom shape respectively;
(7) on described triangle bed die framed bent 8, first building of No. 0 block 2 is carried out, while building No. 0 block, four of spherical steel support supporting legs to be poured in No. 0 block concrete and the bar connecting of the vertical reinforcement of temporary consolidation block and No. 0 block is fixed, and then symmetry builds the case beam block of No. 0 block 2 both sides successively, till closing up leading portion with adjacent continuous pier span centre;
(8), before the case beam block span centre on two adjacent continuous piers closes up, adopt smart steel cable sawing except steel concrete temporary consolidation block 9 and steel pipe column.
Embodiment 1
(1) installing row's steel pipe column 1 respectively as Temporary Piers in the left and right sides of continuous pier 11 along direction across bridge, is 12 connections with connecting between the adjacent steel tubing string with row;
(2) binder 4 and lower binder 3 is adopted to be weldingly connected in the horizontal direction respectively by between the built-in fitting 10 on the continuous pier sidewall of each steel pipe column 1 and sides adjacent, described upper binder 4 and lower binder 3 extend to outside steel pipe column 1, adopt cant beam 5 to be fixedly linked between the outside of the upper binder 4 on same steel pipe column 1 and lower binder 3;
(3) build along direction across bridge respectively in the Dun Ding left and right sides of continuous pier 11 and be fixed with two placing of reinforcement concrete temporary consolidation blocks 9, every placing of reinforcement concrete temporary consolidation block 9 direction across bridge interval establishes three, the vertical reinforcement of described temporary consolidation block 9 stretches out the block top of temporary consolidation block 9, for fixing with the bar connecting of to be cast No. 0 block.
(4) before and after in the middle of the pier top of continuous pier 11, both sides fix a bearing pad stone 13 respectively, each described bearing pad stone is reserved with four ducts, then on each bearing pad stone 13, a spherical steel support 14 is fixed respectively, the top board of described spherical steel support 14 is provided with four supporting legs, the bed bolt of described spherical steel support is screwed into having in four reserving hole channels on bearing pad stone respectively, and is in the milk in duct.
(5) on described upper binder 4, fix multiple cushion block 6, each described cushion block 6 fixes a distribution beam 7, and described distribution beam 7 is perpendicular to upper binder 4;
(6) in the multiple described distribution beam 7 of every side, fix an end face and the suitable triangle bed die framed bent 8 of to be cast No. 0 block 2 bottom shape respectively;
(7) on described triangle bed die framed bent 8, first building of No. 0 block 2 is carried out, while building No. 0 block, four of spherical steel support supporting legs to be poured in No. 0 block concrete and the bar connecting of the vertical reinforcement of temporary consolidation block and No. 0 block is fixed, and then symmetry builds the case beam block of No. 0 block 2 both sides successively, till closing up leading portion with adjacent continuous pier span centre;
(8), before the case beam block span centre on two adjacent continuous piers closes up, adopt smart steel cable sawing except steel concrete temporary consolidation block 9 and steel pipe column.
Adopt this method, compare conventional art to significantly reduce cost, save reinforcing bar 44%, save concrete 25%, save 10 days durations, convert continuous pier 0# block to statically determinate structrue by unstable system temporarily, for cradle cantilever construction provides condition, improve workmanship.

Claims (1)

1. ultra-wide nonprismatic continuous beam 0# block consolidation and a releasing construction method, it is characterized in that, it comprises the following steps:
(1) one row's steel pipe column being installed respectively as Temporary Piers in the left and right sides of continuous pier along direction across bridge, connecting with connecting system between the adjacent steel tubing string with row;
(2) binder and lower binder is adopted to be weldingly connected in the horizontal direction respectively by between the built-in fitting on the continuous pier sidewall of each steel pipe column and sides adjacent, described upper binder and lower binder extend to outside steel pipe column, adopt cant beam to be fixedly linked between the outside of the upper binder on same steel pipe column and lower binder;
(3) build along direction across bridge respectively in the Dun Ding left and right sides of continuous pier and be fixed with two placing of reinforcement concrete temporary consolidation blocks, the vertical reinforcement of described temporary consolidation block stretches out the block top of temporary consolidation block, for fixing with the bar connecting of to be cast No. 0 block;
(4) before and after in the middle of the pier top of continuous pier, both sides fix a bearing pad stone respectively, each described bearing pad stone is reserved with four ducts, then on each bearing pad stone, a spherical steel support is fixed respectively, the top board of described spherical steel support is provided with four supporting legs, the bed bolt of described spherical steel support is screwed in four reserving hole channels on bearing pad stone respectively, and is in the milk in duct;
(5) on described upper binder, fix multiple cushion block, each described cushion block fixes a distribution beam, and described distribution beam is perpendicular to upper binder;
(6) in the multiple described distribution beam of every side, fix an end face and the suitable triangle bed die framed bent of to be cast No. 0 block bottom shape respectively;
(7) on described triangle bed die framed bent, first building of No. 0 block is carried out, while building No. 0 block, four of spherical steel support supporting legs to be poured in No. 0 block concrete and the bar connecting of the vertical reinforcement of temporary consolidation block and No. 0 block is fixed, and then symmetry builds the case beam block of No. 0 block both sides successively, till closing up leading portion with adjacent continuous pier span centre;
(8), before the case beam block span centre on two adjacent continuous piers closes up, adopt smart steel cable sawing except steel concrete temporary consolidation block and steel pipe column.
CN201510242570.6A 2015-05-13 2015-05-13 A kind of ultra-wide nonprismatic continuous beam 0# block consolidation and releasing construction method Active CN104831639B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106320180A (en) * 2016-09-08 2017-01-11 中铁六局集团天津铁路建设有限公司 Porous continuous beam symmetric span-by-span pouring construction method
CN110939064A (en) * 2019-11-19 2020-03-31 中国铁建大桥工程局集团有限公司 Method for quickly removing continuous beam pier and beam consolidation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000096834A (en) * 1998-09-17 2000-04-04 Sumitomo Constr Co Ltd Reinforcing structure of concrete member
CN101660296A (en) * 2009-09-08 2010-03-03 中铁九局集团有限公司 Method for casting concrete 0# block support by continuous beam cantilever
CN202347446U (en) * 2011-12-06 2012-07-25 中铁四局集团第一工程有限公司 Supporting structure for construction of zero block of reinforced concrete continuous beam
CN103306211A (en) * 2013-06-18 2013-09-18 中铁三局集团有限公司 Long and large No.0 reinforcing steel bar binding construction method based on framework beam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000096834A (en) * 1998-09-17 2000-04-04 Sumitomo Constr Co Ltd Reinforcing structure of concrete member
CN101660296A (en) * 2009-09-08 2010-03-03 中铁九局集团有限公司 Method for casting concrete 0# block support by continuous beam cantilever
CN202347446U (en) * 2011-12-06 2012-07-25 中铁四局集团第一工程有限公司 Supporting structure for construction of zero block of reinforced concrete continuous beam
CN103306211A (en) * 2013-06-18 2013-09-18 中铁三局集团有限公司 Long and large No.0 reinforcing steel bar binding construction method based on framework beam

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106320180A (en) * 2016-09-08 2017-01-11 中铁六局集团天津铁路建设有限公司 Porous continuous beam symmetric span-by-span pouring construction method
CN110939064A (en) * 2019-11-19 2020-03-31 中国铁建大桥工程局集团有限公司 Method for quickly removing continuous beam pier and beam consolidation

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