CN110273383A - Steel box-girder step-by-step movement multi-point pushing constructing device and push construction method - Google Patents
Steel box-girder step-by-step movement multi-point pushing constructing device and push construction method Download PDFInfo
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- CN110273383A CN110273383A CN201910624730.1A CN201910624730A CN110273383A CN 110273383 A CN110273383 A CN 110273383A CN 201910624730 A CN201910624730 A CN 201910624730A CN 110273383 A CN110273383 A CN 110273383A
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- girder
- steel box
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- pushing
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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- Architecture (AREA)
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Abstract
The present invention provides a kind of steel box-girder step-by-step movement multi-point pushing constructing device and push construction method, keep steel box-girder stress branch during pushing tow uniform, do not occur concentrating by force phenomenon, pushing tow effect is good.A kind of steel box-girder step-by-step movement multi-point pushing constructing device, comprising: multiple falseworks, for being supported to steel box-girder；Stringer is arranged on falsework；Vertical shift guide rail is arranged on stringer；Piston shoes are located at below steel box-girder, and are located on vertical shift guide rail, and can be realized the movement of steel box-girder opposing side rails with the cooperation of vertical shift guide rail；With vertical shift pushing mechanism, it is arranged before and after the stringer, for pushing piston shoes to move along vertical shift guide rail, including pushes cylinder, push cylinder cylinder body end to connect vertical shift pushing block, cylinder cylinder rod end is pushed to connect piston shoes.
Description
Technical field
The present invention relates to a kind of steel box-girder step-by-step movement multi-point pushing constructing device and push construction method, belong to steel structural bridge
Beam technical field of construction.
Background technique
Steel box-girder is the common structure type of Large Span Bridges, is commonly used on the biggish bridge of span.High with intensity,
Structure is light, industrialized production degree height, Yi Xiufu, the advantages that can be recycled, and steel box-girder is more and more widely used.
Existing steel box-girder installation method has bracket installation, free cantilever erection and three kinds of pushing installation, wherein steel box girder incremental launching method
It refers to
Using the incremental launching device of profession through temporary rest pier or long rails by steel box-girder from assembly position pushing tow to installation site
Construction method, this method be suitable for the biggish cross-section continuous bridge of span, especially under bridge the mountain valley of environment complexity with have cross-line
The engineering for the demand that is open to traffic.
Incremental launching construction device is generally single-point stress in the prior art, i.e., with high thrust oil cylinder in steel box-girder rear end by steel case
Back pushes away advance, or is withstood on steel box-girder front end with punching and pulled steel box-girder and advanced；This two methods exists by concentration problem,
And as the length of pushing steel box girder gradually increases, weight is gradually increased, and pressure needed for pushing tow is continuously increased, in fact it could happen that it
The oil cylinder of preceding arrangement can not provide the case where effective pressure, and there is also cross ambassador's steel box-girder because of pressure deformation damage locally occur
Bad possibility.
Summary of the invention
The present invention provides a kind of steel box-girder step-by-step movement multi-point pushing constructing device and push construction method, and steel box-girder is made to exist
Stress branch is uniform during pushing tow, does not occur concentrating by force phenomenon, pushing tow effect is good.
The present invention to achieve the above object, is achieved through the following technical solutions:
A kind of steel box-girder step-by-step movement multi-point pushing constructing device, comprising:
Multiple falseworks, for being supported to steel box-girder；
Stringer is arranged on falsework；
Vertical shift guide rail is arranged on stringer；
Piston shoes are located at below steel box-girder, and are located on vertical shift guide rail, and it is opposite vertical with the cooperation of vertical shift guide rail to can be realized steel box-girder
Beam is mobile；With
Vertical shift pushing mechanism is arranged before and after the stringer, for pushing piston shoes to move along vertical shift guide rail, including pushes cylinder, pushes cylinder
Cylinder body end connects vertical shift pushing block, and cylinder cylinder rod end is pushed to connect piston shoes.
On the basis of the steel box-girder step-by-step movement multi-point pushing constructing device, vertical shift pushing block is body structure, including upper plate
U-shaped structure is constituted with two webs, is internally divided into multi-cavity, web bottom is wedge shaped, and the setting of vertical shift pushing block front end pushes cylinder ear
Plate.
On the basis of the steel box-girder step-by-step movement multi-point pushing constructing device, piston shoes be a body structure, including upper cover plate, under
Bottom plate and both side plate, upper cover plate are furnished with the bolt hole bolted with steel box-girder, and side plate one end is furnished with the pin shaft hole connecting with promotion cylinder.
On the basis of the steel box-girder step-by-step movement multi-point pushing constructing device, vertical shift guide rail includes positive stop strip and multiple slideway teeth
Plate, positive stop strip and slideway tooth plate are arranged at stringer upper surface, and on the outside of slideway tooth plate setting positive stop strip.
On the basis of the steel box-girder step-by-step movement multi-point pushing constructing device, by oblique between vertical shift pushing block and slideway tooth plate
Face cooperation.
It is a kind of to carry out push construction method, including following step using the steel box-girder step-by-step movement multi-point pushing constructing device
It is rapid:
S1. mat formation on falsework or other platforms stringer, successively installed on stringer vertical shift guide rail, vertical shift pushing block, piston shoes and
Push cylinder；
S2. pushing tow debugging efforts can be carried out after steel box-girder lifting being connect with piston shoes in place；
S3. cylinder is pushed continuously to stretch one stroke of cylinder, pushing tow piston shoes slide forward a distance；
S4. a stroke is stretched cylinder and is finished, and piston shoes are motionless；Cylinder contracting cylinder is pushed, unclamps vertical shift pushing block and vertical shift guide rail, and follow
Cylinder is pushed to move forward；
S5. one stroke contracting cylinder of cylinder is pushed to finish, dragging vertical shift pushing block moves forward a step pitch, the pushing tow of a stroke
Sliding is completed, and Cong Buxu S3 starts to execute the step sequence of next stroke；
S6. subsequent section steel box-girder is lifted after steel box-girder pushing tow to next station, and vertical shift is installed in subsequent steel box-girder section and is pushed away
Motivation structure, so that steel box-girder entirety uniform force.
The working principle of the invention: being laid with stringer and vertical shift guide rail on falsework, using vertical shift pushing mechanism with push away
Dynamic cylinder pushes steel box-girder bottom piston shoes, to drive steel box-girder vertical shift forward, when work installs whole vertical shift system, pushes away
Dynamic cylinder elongation pushes steel box-girder to advance, and then cylinder is pushed to shrink, drives vertical shift pushing mechanism forward slip to next station, i.e.,
It can continue to push steel box-girder forward.2 groups of thrustors are set every section of steel box-girder lower end, so that steel box-girder multiple spot stress, stress
Branch is uniform.
The present invention has the advantages that
1. steel box-girder uniform force: using multi-point pushing, steel box-girder uniform force is not in because steel box-girder local pressure is excessive
And damage metaboly；
2. construction efficiency is high: using multi-point pushing, every section of steel box-girder has thrustor, enables the edge that steel box-girder is more stable
Vertical shift guide rail is mobile to advance, and is not in " gnawing rail " " clamp rail " phenomenon, pushing tow is smooth, high-efficient；
3. without using high thrust cylinder: since every section of steel box-girder arranges vertical shift pushing mechanism, needed for each vertical shift pushing mechanism
Jacking force is smaller, without using high thrust oil cylinder.
4. falsework stability under loading: the present apparatus is internal force for falsework active force in construction, not to interim branch
The vertical bridge of frame is conducive to increase falsework stability to thrust.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
Fig. 1 is piston shoes structural schematic diagram of the present invention；
Fig. 2 is vertical shift pushing block structural schematic diagram of the present invention；
Fig. 3 is stringer of the present invention and vertical shift track schematic diagram；
Fig. 4 is overall structure of the present invention；
Fig. 5 is that the present invention pushes cylinder and piston shoes and vertical shift pushing block structural schematic diagram；
Fig. 6 is that step S3 pushes cylinder and piston shoes and vertical shift pushing block status diagram；
Fig. 7 is that step S4 pushes cylinder and piston shoes and vertical shift pushing block status diagram；
Fig. 8 is that step S5 pushes cylinder and piston shoes and vertical shift pushing block status diagram；
Fig. 9 be steel box-girder pushing tow to next station after lift subsequent section steel box-girder pushing tow schematic diagram.
Wherein, 1. 2 brace；2. upright bar；3. the first brace；4. screw rod；5. screw；6. turning rolls；7. pin shaft；
8. idler wheel；9. pushing tow stringer；10. pushing tow cylinder；11. seat is mounted；I. frame body；II. top-pushing mechanism；III. adjustable
Guide wheel；6-1. upper plate；6-2. lower plate；6-3. mounting plate.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
With reference to Fig. 4, a kind of steel box-girder step-by-step movement multi-point pushing constructing device, including it is stringer 3, vertical shift guide rail 4, piston shoes 1, vertical
Pushing mechanism and multiple falseworks 6 are moved, falsework 6 is used to support steel box-girder, and stringer 3 is arranged on falsework 6, indulges
It moves guide rail 4 to be arranged on stringer 3, piston shoes 1 are located at below steel box-girder, and are located on vertical shift guide rail 4, and cooperate with vertical shift guide rail 4
It is mobile to can be realized steel box-girder opposing side rails 3；Vertical shift pushing mechanism is arranged before and after stringer 3, for pushing piston shoes 1 along vertical shift
Guide rail 4 is mobile, including pushes cylinder 5, and 5 cylinder body end of cylinder is pushed to connect vertical shift pushing block 2, and 5 cylinder rod end of cylinder is pushed to connect piston shoes 1.
With reference to Fig. 1, piston shoes 1 are a body structure, including upper cover plate 101, lower plate 105 and both side plate 103, upper cover plate
101 equipped with the bolt hole 102 bolted with steel box-girder, and 103 one end of side plate is furnished with the pin shaft hole 104 connecting with promotion cylinder 5.
With reference to Fig. 2, vertical shift pushing block 2 is body structure, including upper plate 201 and two webs 203 constitute U-shaped structure, web
Bottom is wedge shaped, moves pushing block 2 and is internally divided into multi-cavity 203, and moves pushing block 2 to have the sliding slot cooperated with vertical shift guide rail 4
204, the setting of 2 front end of vertical shift pushing block pushes cylinder otic placode 205.
With reference to Fig. 3, vertical shift guide rail 4 includes positive stop strip 4-2 and multiple slideway tooth plate 4-1, positive stop strip 4-2 and slideway tooth plate 4-
1 is arranged at 3 upper surface of stringer, and on the outside of slideway tooth plate 4-1 setting positive stop strip 4-2.
In the present embodiment, cooperated between vertical shift pushing block 2 and slideway tooth plate 4-1 by inclined-plane.
It is a kind of to carry out push construction method, including following step using the steel box-girder step-by-step movement multi-point pushing constructing device
It is rapid:
S1. mat formation on falsework or other platforms stringer 3, vertical shift guide rail 4, vertical shift pushing block 2, sliding is successively installed on stringer 3
Boots 1 and promotion cylinder 5；
S2. pushing tow debugging efforts can be carried out after steel box-girder lifting being connect with piston shoes 1 in place；
S3. Fig. 6 is referred to, pushes cylinder 5 continuously to stretch one stroke of cylinder, pushing tow piston shoes 1 slide forward a distance；
S4. Fig. 7 is referred to, a stroke is stretched cylinder and finished, and piston shoes 1 are motionless；5 contracting cylinder of cylinder is pushed, leads vertical shift pushing block 2 with vertical shift
Rail 4 unclamps, and follows and cylinder 5 is pushed to move forward；
S5. Fig. 8 is referred to, 5 one stroke contracting cylinders of cylinder is pushed to finish, dragging one step pitch of forward movement of vertical shift pushing block 2, one
The thrusting slip of stroke is completed, and Cong Buxu S3 starts to execute the step sequence of next stroke；
S6. Fig. 9 is referred to, lifts subsequent section steel box-girder after steel box-girder pushing tow to next station, and in subsequent steel box-girder Duan Shangan
Vertical shift pushing mechanism is filled, so that steel box-girder entirety uniform force.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of steel box-girder step-by-step movement multi-point pushing constructing device characterized by comprising
Multiple falseworks (6), for being supported to steel box-girder；
Stringer (3) is arranged on falsework (6)；
Vertical shift guide rail (4) is arranged on stringer (3)；
Piston shoes (1) are located at below steel box-girder, and are located on vertical shift guide rail (4), and can be realized steel with vertical shift guide rail (4) cooperation
Box beam opposing side rails (3) are mobile；With
Vertical shift pushing mechanism is arranged before and after stringer (3), mobile along vertical shift guide rail (4) for pushing piston shoes (1), including pushes
Cylinder (5) pushes cylinder (5) cylinder body end connection vertical shift pushing block (2), pushes cylinder (5) cylinder rod end connection piston shoes (1).
2. steel box-girder step-by-step movement multi-point pushing constructing device according to claim 1, it is characterised in that: vertical shift pushing block (2)
U-shaped structure is constituted for body structure, including upper plate and two webs, is internally divided into multi-cavity, web bottom is wedge shaped, and vertical shift pushes
The setting of block (2) front end pushes cylinder otic placode.
3. steel box-girder step-by-step movement multi-point pushing constructing device according to claim 1, it is characterised in that: piston shoes (1) are a case
Body structure, including upper cover plate, lower plate and both side plate, upper cover plate are furnished with the bolt hole bolted with steel box-girder, and side plate one end is furnished with
With the pin shaft hole for pushing cylinder (5) to connect.
4. steel box-girder step-by-step movement multi-point pushing constructing device according to claim 1, it is characterised in that: vertical shift guide rail (4) packet
Positive stop strip (4-2) and multiple slideway tooth plates (4-1) are included, positive stop strip (4-2) and slideway tooth plate (4-1) are arranged on stringer (3)
Surface, and on the outside of slideway tooth plate (4-1) setting positive stop strip (4-2).
5. steel box-girder step-by-step movement multi-point pushing constructing device according to claim 4, it is characterised in that: vertical shift pushing block (2)
Cooperated between slideway tooth plate (4-1) by inclined-plane.
6. a kind of carry out incremental launching construction using any one of claim 1 to the 5 steel box-girder step-by-step movement multi-point pushing constructing device
Method, which comprises the following steps:
S1. mat formation stringer (3) on falsework or other platforms, vertical shift guide rail (4) is successively installed, vertical shift pushes on stringer (3)
Block (2), piston shoes (1) and promotion cylinder (5)；
S2. pushing tow debugging efforts can be carried out after steel box-girder lifting being connect with piston shoes (1) in place；
S3. cylinder (5) are pushed continuously to stretch one stroke of cylinder, pushing tow piston shoes (1) slide forward a distance；
S4. a stroke is stretched cylinder and is finished, and piston shoes (1) are motionless；Cylinder (5) contracting cylinder is pushed, vertical shift pushing block (2) and vertical shift guide rail are made
(4) it unclamps, and follows and cylinder (5) is pushed to move forward；
S5. (5) stroke contracting cylinders of cylinder are pushed to finish, dragging vertical shift pushing block (2) moves forward a step pitch, a stroke
Thrusting slip complete, Cong Buxu S3 starts to execute the step sequence of next stroke；
S6. subsequent section steel box-girder is lifted after steel box-girder pushing tow to next station, and vertical shift is installed in subsequent steel box-girder section and is pushed away
Motivation structure, so that steel box-girder entirety uniform force.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910624730.1A CN110273383A (en) | 2019-07-11 | 2019-07-11 | Steel box-girder step-by-step movement multi-point pushing constructing device and push construction method |
| PCT/CN2019/115002 WO2021003903A1 (en) | 2019-07-11 | 2019-11-01 | Stepping-type multipoint incremental launching construction device and incremental launching construction method for steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910624730.1A CN110273383A (en) | 2019-07-11 | 2019-07-11 | Steel box-girder step-by-step movement multi-point pushing constructing device and push construction method |
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| Publication Number | Publication Date |
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| CN110273383A true CN110273383A (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910624730.1A Pending CN110273383A (en) | 2019-07-11 | 2019-07-11 | Steel box-girder step-by-step movement multi-point pushing constructing device and push construction method |
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| CN (1) | CN110273383A (en) |
| WO (1) | WO2021003903A1 (en) |
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| WO2021003903A1 (en) * | 2019-07-11 | 2021-01-14 | 山东省路桥集团有限公司 | Stepping-type multipoint incremental launching construction device and incremental launching construction method for steel box girder |
| CN113981795A (en) * | 2021-09-27 | 2022-01-28 | 中交一公局第七工程有限公司 | Steel-concrete composite beam and sliding walking type integral pushing installation process thereof |
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| CN113789722B (en) * | 2021-08-24 | 2024-02-13 | 中交武汉港湾工程设计研究院有限公司 | Steel truss girder pushing device and method based on bearing girder |
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| WO2021003903A1 (en) | 2021-01-14 |
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