CN101871198B - Vertical turning lifting installation method for steel bridge arch ribs - Google Patents
Vertical turning lifting installation method for steel bridge arch ribs Download PDFInfo
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- CN101871198B CN101871198B CN2010102291499A CN201010229149A CN101871198B CN 101871198 B CN101871198 B CN 101871198B CN 2010102291499 A CN2010102291499 A CN 2010102291499A CN 201010229149 A CN201010229149 A CN 201010229149A CN 101871198 B CN101871198 B CN 101871198B
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Abstract
The invention relates to a vertical turning lifting installation method for steel bridge arch ribs. A temporary portal tower is set up at a hard foundation on the periphery of a pier at the centre line of two arch ribs; the two arch ribs are arranged by sections and are integrally assembled on the projective line of a flat turning position; the roots of the two arch ribs are respectively arranged on a rotating hinge seat, and the ends thereof are respectively provided with an anchor point; the top end of the portal tower is symmetrically hinged with hydraulic raisers; one end of a lifting stranded steel wire is connected with the hydraulic raisers, and the other end thereof is connected with the anchor points; the hydraulic raisers are symmetrically loaded stage by stage; the two arch ribs rotate off the ground and are steadily vertically turned and lifted until the two arch ribs reach designed positions; patching welding is carried out on the roots of the arch ribs; connecting cables of the arch ribs are arranged; and the hydraulic raisers and the portal tower are removed. The invention has the advantages that the assembly and the welding are carried out on the bridge deck, and therefore, the quality is easy to ensure and the construction safety is guaranteed; hydraulic lifting and staying effectively reduces lifting loads, and a large-sized crane is not needed to hoist the arch ribs; and requirements on the tower are low, and the two arch ribs can not entirely be lifted off the ground all along in the whole hoisting process, which is safe and reliable.
Description
Technical field
This patent is applicable to the installing engineering of the big shaped steel arch rib of two arch rib bridges, especially a kind of vertical turning lifting installation method for steel bridge arch ribs.
Background technology
Along with the construction of national basis facility, advantage such as drag-line bridge, novel structure light and handy succinct with it has obtained increasing application in bridge construction.Traditional mounting process adopts by large-scale loop wheel machine segmental hoisting more, welds in the high-altitude, assembly unit.Long in time limit, and work high above the ground that need be a large amount of, component assembly precision no matter, still all be difficult to effectively be ensured on welding quality and the observing and controlling precision, and security risk is bigger. this patent turns to ground with the assembly unit of steel rib structure by the high-altitude, mechanization weld job easy to use makes easier being guaranteed on welding quality and assembly precision and the accuracy of detection.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of vertical turning lifting installation method for steel bridge arch ribs, conveniently installs on bridge floor, guarantees assembly unit quality and construction safety.
The present invention solves the problems of the technologies described above the technical scheme of being taked: a kind of vertical turning lifting installation method for steel bridge arch ribs comprises following installation steps:
The first step: in steel bridge two arch rib centerline, the hard place Ji Chu in the bridge pier periphery sets up interim gate-type pylon;
Second step: the segmentation on the projection line of its position of flatting turn of two arch ribs arranged and carry out integral assembling, on the tower seat of gate-type pylon, be symmetrical set two rotation twisted seats, the root of two arch ribs is installed on two rotation twisted seats by hinge respectively, at the symmetric position place of two arch rib ends anchor point is installed respectively again;
The 3rd step: the hydraulic rockshaft of using at two vertical turning liftings of the hinged respectively installation of two sides on gate-type pylon top;
The 4th step: two ends that promote steel hinge line are connected with two hydraulic rockshafts respectively, and the other end is connected with the anchor point of two arch rib ends respectively, keep the symmetry of two arch ribs is promoted;
The 5th step: to the symmetry loading step by step of two hydraulic rockshafts, make two arch ribs liftoff around rotation twisted seat rotation separately, steadily vertical turning lifting to two arch rib all reaches design attitude, and hydraulic rockshaft is locked;
The 6th step: to the welding of filling a vacancy of the root of two arch ribs, the connecting strand of arch rib is installed, dismounting hydraulic rockshaft and gate-type pylon.
On the basis of such scheme, in the 5th step, near design attitude the time, suspend at two arch rib vertical turning liftings, finely tune each hoist point, make two arch ribs all reach design attitude.
The present invention has following characteristics:
Adopt mounting method of the present invention to adopt hydraulic pressure lift tiltedly to draw the rotation hanging method in bridge floor assembly unit on the spot;
Arch rib symmetrical center line place is provided with high-order interim lifting gate-type pylon, bilateral symmetry is provided with lifter at the top of gate-type pylon, load to promote simultaneously, because of symmetry stressed stressed more favourable to interim gate-type pylon, it is lower that stable guy is provided with requirement, need not the anchor foundation of guy the earth.Because two arch rib symmetry hoist points are arranged on the top of door frame, and symmetry is stressed, so pylon only bears vertical load, and the crossbeam between pylon is not subjected to moment of flexure only to make the linking beam purposes, effective working measure expense of must having saved;
Set up the gate-type pylon in two arch rib centerline, the bridge floor of two arch ribs on it flats turn the position projection line carried out segmented assembly, finishing whole pre-two arch ribs of piecing together adopts hinge to be connected at its root place with the tower seat of gate-type pylon, then by being erected on the hydraulic rockshaft on pylon top, utilize synchronous oblique traction two arch ribs of lifting steel hinge line to overturn continuously to the tower center direction, it is in place to forward the installation site to until two arch ribs, carry out root subsequently and mend the shelves welding, mounting arch rib steel rope is removed the gate-type pylon at last.
The invention has the beneficial effects as follows:
1, the head tower rib structure is at installation on ground, and assembly unit and welding quality are easy to guarantee that reduce work high above the ground, construction safety is more secure, adopt hydraulic pressure lift tiltedly to draw the hanging method of rotation, effectively reduce lifting load, have reduced the distortion of rib structure;
2, need not large-scale loop wheel machine lifting, better economy is arranged;
3, two arch ribs adopt symmetry traction lifting, and low for the stable guy processing requirements of interim gate-type pylon, symmetrically arranged hydraulic rockshaft is directly arranged in tower top, and the door frame crossbeam is the usefulness for linking and stablizing only, effectively saves the temporary measure expense;
4, the oblique traction of high-order gate-type pylon effectively reduces tractive force, and tractive force reduces gradually along with the rotation of arch rib, and tractive force reaches minimum when arch rib is in place, effectively reduces to promote load;
5, in the whole hoisting process, two arch ribs all the time can be whole not liftoff, and load is little, and is safe and reliable.
Description of drawings
Fig. 1 is the mounting method first step of the present invention and the structural representation in second step.
Fig. 2 is the structural representation in the 3rd step of mounting method of the present invention and the 4th step.
Fig. 3 promotes initial structural representation for the 5th step of mounting method of the present invention.
Fig. 4 is the structural representation in the 5th step of the mounting method lifting process of the present invention.
Fig. 5 promotes the structural representation that puts in place for the 5th step of mounting method of the present invention.
The structural representation that Fig. 6 finished for the 6th step of mounting method of the present invention.
Label declaration in the accompanying drawing:
1-door frame guy 2-hydraulic rockshaft 3-gate-type pylon
4-promotes steel strand 5-anchor point 6-rotation twisted seat
7-arch rib 8-assembly unit moulding bed 9-bridge floor
The 10-pier footing
The specific embodiment
See also shown in Fig. 1～6, a kind of vertical turning lifting installation method for steel bridge arch ribs, this process using Based Intelligent Control lifting means has been implemented the work such as vertical transfer, fine setting of steel arch rib effectively, guarantees that arch rib is in place smoothly, and its technological process roughly can be divided into six steps.
Step 1:, locate to set up interim gate-type pylon 3 (Fig. 1) at the hard place base (pier footing 10) of bridge pier periphery in steel bridge two arch ribs 7 centerline;
Second step: the segmentation on the projection line of its position of flatting turn of two arch ribs 7 arranged and carry out integral assembling, on the tower seat 11 of gate-type pylon 3, be symmetrical set two rotation twisted seats 6, the root of two arch ribs 7 is installed on two rotation twisted seats 6 by hinge respectively, at the symmetric position place of two arch ribs, 7 ends anchor point 5 (Fig. 1) is installed respectively again;
The 3rd step: at the hydraulic rockshaft 2 that two vertical turning liftings of the two sides hinged installation of symmetry on gate-type pylon 3 tops are used, the top of gate-type pylon 3 also is provided with door frame guy 1 (Fig. 2);
The 4th step: two ends that promote steel hinge line 4 are connected with two hydraulic rockshafts 2 respectively, and the other end is connected with the anchor point 5 of two arch ribs, 7 ends respectively, keep the symmetry of two arch ribs is promoted (Fig. 2);
The 5th step: to the symmetry loading step by step of two hydraulic rockshafts 2, in symmetrical loading procedure, after steel arch rib 7 upsets in both sides promote and leave assembly unit moulding bed 8, check each equipment operating condition and each structural member comprehensively, two arch ribs 7 are liftoff around rotation twisted seat 6 rotations separately, steady vertical turning lifting, at two arch ribs, 7 vertical turning liftings near design attitude the time, suspend, finely tune each hoist point, make two arch ribs 7 all reach design attitude, gate-type pylon 1 is in vertical state all the time in the whole process, with hydraulic rockshaft 2 lockings, arch rib 7 keeps attitude constant (Fig. 3 to Fig. 5);
The 6th step: to the welding of filling a vacancy of the root of two arch ribs 7, the connecting strand of arch rib 7 is installed, treat that 7 one-tenths independences of two arch ribs are stablized stress system after, dismounting hydraulic rockshaft 2 and gate-type pylon 3 (Fig. 6).
Claims (2)
1. vertical turning lifting installation method for steel bridge arch ribs is characterized in that comprising following installation steps:
The first step: in steel bridge two arch ribs (7) centerline, the hard place Ji Chu in the bridge pier periphery sets up interim gate-type pylon (3);
Second step: two arch ribs (7) segmentation on the projection line of its position of flatting turn arranged and carry out integral assembling, on the tower seat (11) of gate-type pylon (3), be symmetrical set two rotation twisted seats (6), the root of two arch ribs (7) is installed on two rotation twisted seats (6) by hinge respectively, at the symmetric position place of two arch ribs (7) end anchor point (5) is installed respectively again;
The 3rd step: the hydraulic rockshaft of using at two vertical turning liftings of two sides on gate-type pylon (3) the top hinged installation of symmetry (2);
The 4th step: two ends that promote steel hinge line (4) are connected with two hydraulic rockshafts (2) respectively, and the other end is connected with the anchor point (5) of two arch ribs (7) end respectively, keep the symmetry of two arch ribs is promoted;
The 5th step: to two hydraulic rockshafts (2) symmetry loading step by step, make two arch ribs (7) liftoff around rotation twisted seat (6) rotation separately, steadily vertical turning lifting to two arch rib all reaches design attitude, and hydraulic rockshaft (2) is locked;
The 6th step: to the welding of filling a vacancy of the root of two arch ribs (7), the connecting strand of arch rib (7) is installed, dismounting hydraulic rockshaft (2) and gate-type pylon (3).
2. vertical turning lifting installation method for steel bridge arch ribs according to claim 1 is characterized in that: in the 5th step,, suspend near design attitude the time at two arch ribs (7) vertical turning lifting, finely tune each hoist point, make two arch ribs (7) all reach design attitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102291499A CN101871198B (en) | 2010-07-16 | 2010-07-16 | Vertical turning lifting installation method for steel bridge arch ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102291499A CN101871198B (en) | 2010-07-16 | 2010-07-16 | Vertical turning lifting installation method for steel bridge arch ribs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101871198A CN101871198A (en) | 2010-10-27 |
| CN101871198B true CN101871198B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102291499A Expired - Fee Related CN101871198B (en) | 2010-07-16 | 2010-07-16 | Vertical turning lifting installation method for steel bridge arch ribs |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433843B (en) * | 2011-09-30 | 2013-12-25 | 腾达建设集团股份有限公司 | Self-balancing arch rib vertical rotation and lift construction method |
| CN104099875B (en) * | 2014-07-04 | 2016-05-11 | 中国建筑第八工程局有限公司 | A kind of hitch structure of arch rib vertical rotator construction and drag construction method |
| CN104088231B (en) * | 2014-08-01 | 2016-05-18 | 武船重型工程股份有限公司 | A kind of turn-over method of heavy bridge steel tower sections |
| CN106149564B (en) * | 2015-04-24 | 2018-05-15 | 江苏沪宁钢机股份有限公司 | A kind of installation method of three stride continuous steel bridge |
| CN112144402B (en) * | 2020-09-03 | 2022-04-15 | 浙江精工钢结构集团有限公司 | Rotary jacking method |
| CN112030713B (en) * | 2020-09-03 | 2022-04-15 | 浙江精工钢结构集团有限公司 | Large-span single-oblique-arch cable-stayed landscape bridge and self-balancing high-altitude vertical rotation construction method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256515A (en) * | 1998-03-13 | 1999-09-21 | Mitsubishi Heavy Ind Ltd | Anchoring method for steel bridge pier |
| JP2000352017A (en) * | 1999-06-09 | 2000-12-19 | Kawada Industries Inc | Bridge erection method |
| CN1851137A (en) * | 2006-04-27 | 2006-10-25 | 中铁一局集团有限公司 | Gate-type crane semiarch integral-hoisting steel-pipe arch process |
| CN101117795A (en) * | 2007-08-29 | 2008-02-06 | 中铁大桥局股份有限公司 | Mounting method for steel case basket arch single-frame segment |
| CN101672011B (en) * | 2009-10-13 | 2011-02-16 | 中铁二局股份有限公司 | Steel tube arch rib vertical lifting method |
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| CN101871198A (en) | 2010-10-27 |
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