CN102635070A - Mutual-pulling type vertical turning construction method for steel towers of cable-stayed bridge - Google Patents

Mutual-pulling type vertical turning construction method for steel towers of cable-stayed bridge Download PDF

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Publication number
CN102635070A
CN102635070A CN2012101000226A CN201210100022A CN102635070A CN 102635070 A CN102635070 A CN 102635070A CN 2012101000226 A CN2012101000226 A CN 2012101000226A CN 201210100022 A CN201210100022 A CN 201210100022A CN 102635070 A CN102635070 A CN 102635070A
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China
Prior art keywords
head tower
tower
steel strand
construction
head
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CN2012101000226A
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CN102635070B (en
Inventor
卞永明
宋文杰
秦利升
金晓林
王海
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SHANGHAI TXMEC TECHNOLOGY Co Ltd
Tongji University
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SHANGHAI TXMEC TECHNOLOGY Co Ltd
Tongji University
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Priority to CN201210100022.6A priority Critical patent/CN102635070B/en
Publication of CN102635070A publication Critical patent/CN102635070A/en
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Abstract

The invention relates to a mutual-pulling type vertical turning construction method for steel towers of a cable-stayed bridge. The mutual-pulling type vertical turning construction method includes that bridge deck is used as a welding construction platform to finish welding operation of the steel towers on the left side and the right side, and the steel towers on the two sides respectively horizontally move in place; draw bars and press bars are respectively mounted on the steel towers on the two sides so as to form triangular supports; a flexible bearing steel stand penetrates into a rotating cylinder, and is connected to the top ends of the triangular supports on the two sides; and hydraulic synchronous lifting technology is controlled by a computer, the steel tower on the right side is used as a support at first, the steel tower on the left side vertically turns, then the steel tower on the left side is used as a support after turning, and the steel tower on the right side turns vertically. The mutual-pulling type vertical turning construction method for the steel towers of the cable-stayed bridge can avoid high-altitude welding operation of the steel towers of the bridge, the quality of weld joints is controlled more easily, safety of construction operation is improved, construction cost is reduced, and construction efficiency is improved. A computer control system is simple in operation and easy in control, and an operation process is safe and reliable.

Description

The mutual pull-type vertical turn construction method of cable stayed bridge head tower
Technical field
The present invention relates to bridge head tower job practices, relate in particular to the mutual pull-type vertical turn construction method of a kind of cable stayed bridge head tower.
Background technology
Along with China's constant development of economy, the engineering of building of Longspan Bridge gets more and more.At present,, adopt the way of upright assembly unit to construct usually,, use large-tonnage tower crane or crane to carry out assembly unit piecemeal just through setting up scaffold and support platform for the installation of bridge steel tower.There is following shortcoming in this construction technology: 1) work high above the ground is dangerous big; 2) the space welding quality of head tower is difficult to guarantee; 3) the space mounting precision of head tower is difficult to control.
In order to guarantee head tower location welding quality, reduce work high above the ground, guarantee safety of construction, domesticly employing " cable stayed bridge steel tower vertical turn method " also occurred and construct: with the girder steel bridge floor, promptly bridge carries out the vertical turn construction from as support.This construction technology causes the stress deformation of girder steel bridge floor easily.
Summary of the invention
The purpose of this invention is to provide that a kind of to have a construction simple, installation accuracy is high, convenient welding, and dangerous little, work high above the ground is few, the mutual pull-type vertical turn construction method of cable stayed bridge head tower of characteristics such as the construction period is short, cost is low, efficient is high, quality height.
The mutual pull-type vertical turn construction method of the cable stayed bridge head tower that the present invention provides is to utilize bridge floor as the welding procedure platform, accomplishes the welding job of left and right sides head tower, and the head tower of both sides moved horizontally respectively puts in place.Then, pull bar and depression bar are installed respectively on the head tower of both sides, to constitute tripod.Penetrate the oil cylinder of turning with flexible load-bearing steel strand, and connect the top of both sides tripod.Adopting the computer control hydraulic synchronous lifting technique, is support with the right side head tower at first, carries out the vertical turn of left side head tower, and the left side head tower of turning with completion then is support, carries out the vertical turn of right side head tower.
The mutual pull-type vertical turn construction method of cable stayed bridge head tower that the present invention proposes, concrete steps are following:
(1) left side head tower tower seat and right side head tower tower seat are installed respectively on existing left side bridge master pier and right side bridge master pier; With the girder steel bridge floor accomplished as the welding procedure platform; On girder steel bridge floor both sides, weld left side head tower and right side head tower respectively; Left side pull bar and left side depression bar are set on the head tower of left side then, and left side head tower, left side pull bar and left side depression bar are formed the left side tripod, and be corresponding; Right side pull bar and right side depression bar are set on the head tower of right side; Right side head tower, right side pull bar and right side depression bar are formed the right side tripod, and flexible load-bearing steel strand two ends connect left side tripod and tripod top, right side vertex of a triangle respectively, and flexible load-bearing steel strand penetrate the oil cylinder of turning;
(2) place head tower counterweight 12 on the right side head tower 9, for the rotator construction of left side head tower 3 is got ready.Utilize computer control hydraulic synchronizing lifting system, with flexible load-bearing steel strand 6 tensionings, progressively promote left side head tower 3 through the oil cylinder of turning; Make the left side head tower certain angle of turning; Continue the flexible load-bearing steel strand 6 of tensioning, accomplish the rotator construction of left side head tower 3, make left side head tower 3 accomplish and close up; Unload flexible load-bearing steel strand 6 load then, stretch-draw back steel strand 13 on left side head tower 3;
(3) remove head tower counterweight 12 on the right side head tower 9, for turning of right side head tower 9 ready, through the oil cylinder of turning with flexible load-bearing steel strand 6 tensionings; Progressively promote right side head tower 9, make the right side head tower certain angle of turning, continue the flexible load-bearing steel strand 6 of tensioning; Accomplish the rotator construction of right side head tower 9, make right side head tower 9 accomplish and close up, unload flexible load-bearing steel strand 6 load then; Remove the back steel strand 13 on the head tower 3 of left side; Remove left side pull bar 4 and left side depression bar 5, right side pull bar 8 and right side depression bar 7, and flexible load-bearing steel strand 6.Accomplish the rotator construction of cable stayed bridge head tower.
Advantage of the present invention is: can avoid the high-altitude weld job of bridge steel tower, the quality of butt welded seam to control more easily, improve the safety of construction operation, reduce construction cost, improve efficiency of construction.Computer control system simple to operate is easy to control, and operation process is safe and reliable.
Description of drawings
Fig. 1 is the mutual pull-type vertical turn constructing structure sketch map of cable stayed bridge head tower.
Fig. 2 is the schematic flow sheet first step of steel tower vertical turn construction.
Fig. 3 is second step of schematic flow sheet of steel tower vertical turn construction.
Fig. 4 is the 3rd step of schematic flow sheet of steel tower vertical turn construction.
Fig. 5 is the 4th step of schematic flow sheet of steel tower vertical turn construction.
Fig. 6 is the 5th step of schematic flow sheet of steel tower vertical turn construction.
Fig. 7 is the 6th step of schematic flow sheet of steel tower vertical turn construction.
Fig. 8 is the 7th step of schematic flow sheet of steel tower vertical turn construction.
Fig. 9 is the 8th step of schematic flow sheet of steel tower vertical turn construction.
Label among the figure: 1 is the main pier in left side of bridge, and 2 is left side head tower tower seat, and 3 is the left side head tower, and 4 is the left side pull bar; 5 is the left side depression bar, and 6 is flexible load-bearing steel strand, and 7 is the right side depression bar; 8 is the right side pull bar, and 9 is the right side head tower, and 10 is right side head tower tower seat; 11 is right side master's pier of bridge, and 12 is the head tower counterweight, and 13 is the back steel strand.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Embodiment 1: the present invention has provided the mutual pull-type vertical turn construction method of a kind of cable stayed bridge head tower.As shown in Figure 1; At first; On left side bridge master pier of having built 1 and right side bridge master pier 11, fixed installation left side head tower tower seat 2 and right side head tower tower seat 10 utilize completed girder steel bridge floor as the welding procedure platform more respectively; Accomplish the welding job of left side head tower 3 and right both sides head tower 9, and left side head tower 3 and right side head tower 9 moved horizontally respectively put in place.Left side pull bar 4 and left side depression bar 5 are installed on left side head tower 3, are constituted the left side tripod, right side pull bar 8 and right side depression bar 7 are installed on right side head tower 9, constitute the right side tripod.Penetrate the oil cylinder of turning with flexible load-bearing steel strand 6, and connect the left and right side tripod.
Fig. 2 is the preparation sketch map before the head tower rotator construction.On right side head tower 9, place head tower counterweight 12, for the rotator construction of left side head tower 3 is got ready.Utilize computer control hydraulic synchronizing lifting system, with flexible load-bearing steel strand 6 tensionings, progressively promote left side head tower 3, turn 35 through the oil cylinder of turning o, as shown in Figure 3.Continue the flexible load-bearing steel strand 6 of tensioning, accomplish the rotator construction of left side head tower 3, make left side head tower 3 accomplish and close up, unload 50% of flexible load-bearing steel strand 6 load then, as shown in Figure 4.Stretch-draw back steel strand 13 are as shown in Figure 5 on left side head tower 3.Remove the head tower counterweight 12 on the right side head tower 9, for turning of right side head tower 9 ready, as shown in Figure 6.With flexible load-bearing steel strand 6 tensionings, progressively promote right side head tower 9 through the oil cylinder of turning, turn 35 o, as shown in Figure 7.Continue the flexible load-bearing steel strand 6 of tensioning, accomplish the rotator construction of right side head tower 9, make right side head tower 9 accomplish and close up, unload flexible load-bearing steel strand 6 load then, as shown in Figure 8.Then, remove the back steel strand 13 on the head tower 3 of left side, as shown in Figure 9.At last, remove left side pull bar 4 and left side depression bar 5, right side pull bar 8 and right side depression bar 7, and flexible load-bearing steel strand 6.Accomplish the rotator construction of cable stayed bridge head tower.

Claims (1)

1. mutual pull-type vertical turn construction method of cable stayed bridge head tower is characterized in that concrete steps are following:
(1) left side head tower tower seat and right side head tower tower seat are installed respectively on existing left side bridge master pier and right side bridge master pier; With the girder steel bridge floor accomplished as the welding procedure platform; On girder steel bridge floor both sides, weld left side head tower and right side head tower respectively; Left side pull bar and left side depression bar are set on the head tower of left side then, and left side head tower, left side pull bar and left side depression bar are formed the left side tripod, and be corresponding; Right side pull bar and right side depression bar are set on the head tower of right side; Right side head tower, right side pull bar and right side depression bar are formed the right side tripod, and flexible load-bearing steel strand two ends connect left side tripod and tripod top, right side vertex of a triangle respectively, and flexible load-bearing steel strand penetrate the oil cylinder of turning;
(2) right side head tower (9) is gone up and is placed head tower counterweight (12), for the rotator construction of left side head tower (3) is got ready; Utilize computer control hydraulic synchronizing lifting system, with flexible load-bearing steel strand (6) tensioning, progressively promote left side head tower (3) through the oil cylinder of turning; Make the left side head tower certain angle of turning; Continue the flexible load-bearing steel strand (6) of tensioning, accomplish the rotator construction of left side head tower (3), make left side head tower (3) accomplish and close up; Unload flexible load-bearing steel strand (6) load then, the head tower in the left side (3) is gone up stretch-draw back steel strand (13);
(3) remove head tower counterweight (12) on the right side head tower (9), for turning of right side head tower (9) ready, through the oil cylinder of turning with flexible load-bearing steel strand (6) tensioning; Progressively promote right side head tower (9), make the right side head tower certain angle of turning, continue the flexible load-bearing steel strand (6) of tensioning; Accomplish the rotator construction of right side head tower (9), make right side head tower (9) accomplish and close up, unload flexible load-bearing steel strand (6) load then; Remove the back steel strand (13) on the left side head tower (3); Remove left side pull bar (4) and left side depression bar (5), right side pull bar (8) and right side depression bar (7), and flexible load-bearing steel strand (6); Accomplish the rotator construction of cable stayed bridge head tower.
CN201210100022.6A 2012-04-09 2012-04-09 Mutual-pulling type vertical turning construction method for steel towers of cable-stayed bridge Active CN102635070B (en)

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CN102635070B CN102635070B (en) 2014-03-05

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102839609A (en) * 2012-08-23 2012-12-26 中交第二航务工程局有限公司 Ladder type vertical rotating auxiliary device for aquatic horizontally transported bridge tower
CN104213513A (en) * 2014-10-02 2014-12-17 杜东升 High-altitude construction device after bridge body turning and installing and use method of high-altitude construction device
CN105821775A (en) * 2016-03-24 2016-08-03 中交第四公路工程局有限公司 Construction method for using cable crane for overturning arch bridge arch rib
CN107938518A (en) * 2017-11-21 2018-04-20 中铁四局集团钢结构建筑有限公司 One kind is first turned across busy railway freely-supported steel truss girder translates erection construction method again

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6832459B2 (en) * 2002-01-18 2004-12-21 Matthew Russell Methods and apparatus for forming and placing generally horizontal structures
CN101122114A (en) * 2007-09-14 2008-02-13 中铁大桥局集团第五工程有限公司 Back-cable-free cable-stayed bridge steel tower vertical turn construction method
CN201695342U (en) * 2010-06-28 2011-01-05 中铁二十局集团有限公司 Adjustable inner support rod for arch rib tilting construction
CN102061668A (en) * 2010-12-21 2011-05-18 天津第七市政公路工程有限公司 Vertical swiveling construction method of dual-steel-arch tower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6832459B2 (en) * 2002-01-18 2004-12-21 Matthew Russell Methods and apparatus for forming and placing generally horizontal structures
CN101122114A (en) * 2007-09-14 2008-02-13 中铁大桥局集团第五工程有限公司 Back-cable-free cable-stayed bridge steel tower vertical turn construction method
CN201695342U (en) * 2010-06-28 2011-01-05 中铁二十局集团有限公司 Adjustable inner support rod for arch rib tilting construction
CN102061668A (en) * 2010-12-21 2011-05-18 天津第七市政公路工程有限公司 Vertical swiveling construction method of dual-steel-arch tower

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102839609A (en) * 2012-08-23 2012-12-26 中交第二航务工程局有限公司 Ladder type vertical rotating auxiliary device for aquatic horizontally transported bridge tower
CN102839609B (en) * 2012-08-23 2014-06-25 中交第二航务工程局有限公司 Ladder type vertical rotating auxiliary device for aquatic horizontally transported bridge tower
CN104213513A (en) * 2014-10-02 2014-12-17 杜东升 High-altitude construction device after bridge body turning and installing and use method of high-altitude construction device
CN104213513B (en) * 2014-10-02 2015-12-02 温州市申邦市政工程有限公司 High-altitude construction equipment after a kind of bridge rotating
CN105113428A (en) * 2014-10-02 2015-12-02 温州市申邦市政工程有限公司 Installation and construction method for high-altitude construction device after rotation of bridge
CN105821775A (en) * 2016-03-24 2016-08-03 中交第四公路工程局有限公司 Construction method for using cable crane for overturning arch bridge arch rib
CN105821775B (en) * 2016-03-24 2017-07-07 中交第四公路工程局有限公司 Arch rib construction method is overturn using cable crane
CN107938518A (en) * 2017-11-21 2018-04-20 中铁四局集团钢结构建筑有限公司 One kind is first turned across busy railway freely-supported steel truss girder translates erection construction method again

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