CN203583371U - Box girder self-locking synchronous pushing system of variable-cross-section cantilever bridge - Google Patents

Box girder self-locking synchronous pushing system of variable-cross-section cantilever bridge Download PDF

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Publication number
CN203583371U
CN203583371U CN201320683435.1U CN201320683435U CN203583371U CN 203583371 U CN203583371 U CN 203583371U CN 201320683435 U CN201320683435 U CN 201320683435U CN 203583371 U CN203583371 U CN 203583371U
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CN
China
Prior art keywords
self
bridge
locking
pushing
box girder
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CN201320683435.1U
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Chinese (zh)
Inventor
郑永会
孙宇凡
尚瞳
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鞍山东方钢构桥梁有限公司
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Priority to CN201320683435.1U priority Critical patent/CN203583371U/en
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Publication of CN203583371U publication Critical patent/CN203583371U/en

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Abstract

The utility model relates to a box girder self-locking synchronous pushing system of a variable-cross-section cantilever bridge. The box girder self-locking synchronous pushing system comprises a pushing sliding bridge box girder welding and assembling platform system, a sliding rail, a sliding shoe set and a self-locking synchronous pushing device set, wherein the sliding shoe set and the self-locking synchronous pushing device set are installed on the sliding rail. Pushing automatic control is achieved. The box girder self-locking synchronous pushing system is characterized in that the self-locking synchronous pushing device comprises a hydraulic pushing oil cylinder and a self-locking pushing rail clamping device, an adjustment cushion block used for adjusting the bridge type arch is arranged on the upper portion of the sliding shoe set, a thrust plate and a side limiting plate which are used for preventing the sliding shoe set from fleeing during pushing are arranged on the front and lateral side of the sliding shoe set respectively, rail limiting plates used for limiting deviation of the sliding shoe set are arranged on the two sides of the contact portion of the lower portion of the sliding shoe set and the rail, a bridge box girder is arranged on the upper portion of the sliding shoe set, and a bridge box girder transition section and a guide beam are arranged at the front end of the first bridge box girder section. The box girder self-locking synchronous pushing system has the advantages that the bridge box girder is pushed and moves safely and is in position quickly, and the box girder self-locking synchronous pushing system is reasonable in structural design, safe and reliable.

Description

Variable cross-section cantilever bridge case beam self-locking synchronous push system
Technical field
The utility model relates to a kind of bridge box girder construction equipment, particularly a kind of variable cross-section cantilever bridge case beam self-locking synchronous push system.
Background technology
The quick interchange overpass construction in China city is in full swing, steel structure bridge is because its structure is light, intensity is high, install fast, various shapes, in Longspan Bridge construction at home and abroad, find broad application, the mounting methods that set up falsework that adopt when the existing bridge across obstructions such as intersection or railways is installed more, across railway bridge because train will normally move, just can not install by support jig, can only adopt sliding method to install, common sliding method is all to adopt tractive method to install, first this scheme must have independent counterforce device, all sliding friction power must be born by counterforce device, and pass through counterforce device, sliding platform passes to prop or bridge pier, strengthened like this design size on prop and basis, make bridge pier bear vertical equity load simultaneously, and Pier Design does not consider to bear very large horizontal thrust conventionally.For variable cross-section steel bridge, its each fulcrum support reaction is not identical in addition, horizontal thrust is also changing, the slide device of tractive scheme cannot dynamically be adjusted pulling force, the likely skew at any time of bridge case beam, need to lean on spacing correction the in powerful side top, and the method effect is unsatisfactory, to bridge case beam sides, cause damage concerning temporary supporting or bridge pier, additionally to increase again side direction horizontal thrust simultaneously.Because bridge box section changes, traction point is difficult to arrange, and rope for traction is long will cause rope downwarp, and during tractive, walking is not steady.
The mounting methods that set up falsework that adopt when the existing bridge across obstructions such as intersection or railways is installed more, across railway bridge, because train will normally move, just can not install by support jig, can only adopt sliding method to install, common sliding method is all to adopt tractive method to install
Tractive method will arrange slip support abutment on several interim detached piers, and bridge case beam slides forward by the slide plate constantly importing and exporting on slip support abutment, and slide plate will lean on artificial constantly feeding, the problem of this mount scheme have following some:
1. tractive force cannot be offset voluntarily, will along bridge to horizontal force on interim independent support and bridge pier,
2. bridge case beam base plate slides on the slip support abutment of level altitude, and bridge bottom surface is on-plane surface owing to there being camber, and slide slip support abutment in process and can not adapt to the bridge bottom surface that absolute altitude constantly changes,
3. slip support abutment cannot be to pontic lateral Displacement, needs additional side direction jack correction,
4. the loss of slide plate is large, and recycling rate of waterused is low, needs artificial constantly feeding,
5. slip support abutment location arrangements is dumb, can not adapt to the installation requirement of variable cross-section bridge case beam.
Above problem causes the speed of slippage slow, and operating expenses is large, bridge type low precision, and bridge case beam is easy deflection in slipping, and therefore shuffle effect is undesirable.
The problem existing for overcoming above-mentioned prior art, notice of authorization number is that CNI 00503980C denomination of invention is that the thrustor using in the disclosed construction method of < < multi-point pushing bridge box girder construction engineering method > > is, the tooth plate of spline is set at bridge case beam and nose girder web, utilize pushing tow jack that jacking force is provided, wherein the piston rod of pushing tow jack is provided with slide block, slide block is provided with sour jujube piece and the control spring thereof with inclined-plane, its inclined-plane is positioned at the very heavy top side of pushing tow, utilize pushing tow jack rise to apply jacking force to bridge case beam and nose girder, teeth groove is exited in backhaul sour jujube piece, enter next rise.But still have the following disadvantages: need the tooth plate of processing belt teeth groove and the slide block of pushing tow jack piston boom end, after pushing tow finishes, will remove tooth plate, cost increases.
Summary of the invention
The purpose of this utility model be to provide a kind of bridge case safety beam pushing tow move, in place fast, reasonable in design, safe and reliable variable cross-section cantilever bridge case beam self-locking synchronous push system.
The purpose of this utility model is to realize like this.
Variable cross-section cantilever bridge case beam self-locking synchronous push system of the present utility model, comprise the thrusting slip bridge box beam Welding assembly platform system being arranged on across railway one side, described thrusting slip bridge box beam Welding assembly platform system is by temporary supporting bridge pier, be arranged on the thrusting slip bridge box beam Welding assembly platform on temporary supporting bridge pier, the sliding rail being arranged on described thrusting slip bridge box beam Welding assembly platform forms, one group of piston shoes and one group of self-locking synchronous push device are installed on described sliding rail, one group of described self-locking synchronous push device is electrically connected with pushing tow automatic control system, it is characterized in that:
Described self-locking synchronous push device, comprise hydraulic pushing oil cylinder and self-locking pushing tow rail clamping device, described hydraulic pushing oil cylinder one end is hinged with the otic placode that is arranged on piston shoes side by bearing pin, the other end is with hinged by bearing pin and self-locking pushing tow rail clamping device on lock pushing tow rail clamping device, on described hydraulic pushing oil cylinder, be provided with distance measuring sensor and pressure sensor
On described piston shoes top, be provided for adjusting the adjustment cushion block of bridge type camber, thrust plate and the side limiting plate of piston shoes play before described piston shoes and when side is provided for preventing pushing tow respectively, in described piston shoes bottom and both sides, track contact site, be provided for limiting the railway limit plate that piston shoes are offset, bridge case beam is placed in piston shoes top, at the front end of first paragraph bridge case beam, is provided with bridge case beam changeover portion and nose girder.
Described self-locking pushing tow rail clamping device is comprised of two of left and right wedge and spring assembly.
Described sliding rail is three above sliding rails.
The utility model has the advantages that:
1) adopt variable cross-section cantilever bridge case beam self-locking synchronous push system of the present utility model, segmentation circulation to cantilever span railway steel bridge lift, group is to, welding, pushing tow, assurance is toppled and is made mounting slip land lengths reach minimum on coefficient basis, is particularly useful for place in Urban Bridge installing engineering little and cannot use the engineering of large tonnage crane lifting;
2) quantity and the position of track and piston shoes are set in the utility model according to steel bridge variable cross-section situation, guarantee steel bridge lateral stability and make bridge type absolute altitude and camber adjustable, piston shoes transmit horizontal thrust and vertical pressure and substitute again pontic and slide in orbit, recycle, prevent bridge bottom surface direct friction track and damage;
3) by having adopted self-locking pushing tow rail clamping device in self-locking hydraulic top pushing device of the present utility model, can form counter-force by Automatic-clamping track, when thereby assurance bridge case beam is pushed into, self-locking pushing tow rail clamping device is non-slip, the frictional force of piston shoes and track and self-locking pushing tow rail clamping device clamping force balance between two forces in passing process, and clamping force can increase automatically with the increase of tractional force.Form self-locking again horizontal-less thrust pass to sliding platform, thereby abandon conventional counterforce device, saved that sliding platform supports and the reinforcing problem of bridge pier;
4) in the utility model the weight of variable cross-section steel bridge section in continuous variation, pushing tow control system can be by the feedback signal of sensor the stroke to multi-point pushing oil cylinder and jacking force dynamically adjust, guarantee each pushing tow point self-locking synchronous push of pontic, thereby make in variable cross-section steel bridge slipping not deflection.
Accompanying drawing explanation
Fig. 1 is variable cross-section cantilever bridge case beam self-locking synchronous push system drawing of the present utility model.
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Fig. 3 is the structural representation of piston shoes.
Fig. 4 is the top view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
As Figure 1-4, variable cross-section cantilever bridge case beam self-locking synchronous push system of the present utility model, comprise the thrusting slip bridge box beam Welding assembly platform system being arranged on across railway one side, described thrusting slip bridge box beam Welding assembly platform system is by temporary supporting bridge pier 2, be arranged on the thrusting slip bridge box beam Welding assembly platform 3 on temporary supporting bridge pier 2, the sliding rail 4 being arranged on described thrusting slip bridge box beam Welding assembly platform 3 forms, one group of piston shoes 6 and one group of self-locking synchronous push device 5 are installed on described sliding rail 4, one group of described self-locking synchronous push device 5 is electrically connected with pushing tow automatic control system, it is characterized in that:
Described self-locking synchronous push device 5, comprise hydraulic pushing oil cylinder 5-3 and self-locking pushing tow rail clamping device 5-1, described hydraulic pushing oil cylinder 5-3 one end is hinged with the otic placode 5-6 that is arranged on piston shoes side by bearing pin 5-5, the other end is with hinged by bearing pin 5-2 and self-locking pushing tow rail clamping device 5-1 on lock pushing tow rail clamping device, on described hydraulic pushing oil cylinder 5-3, be provided with distance measuring sensor 5-4 and pressure sensor, stroke and the jacking force of the feedback signal that pushing tow automatic control system can be passed through to multi-point pushing oil cylinder dynamically adjusted, adapt to the continuous variation of variable cross-section steel bridge section weight, guarantee each pushing tow point self-locking synchronous push of pontic, thereby make in variable cross-section steel bridge slipping not deflection.Its pushing tow automatic control system adopts existing automaton.
As shown in Figures 2 and 3, the utility model is provided for adjusting the adjustment cushion block 6-2 of bridge type camber on described piston shoes 6 tops, thrust plate 6-3 and the side limiting plate 6-1 of piston shoes play before described piston shoes 6 and when side is provided for preventing pushing tow respectively, in described piston shoes 6 bottoms and both sides, track contact site, be provided for limiting the railway limit plate 6-4 that piston shoes are offset, bridge case beam 7 is placed in piston shoes 6 tops, at the front end of first paragraph bridge case beam 7, is provided with bridge case beam changeover portion 8 and nose girder 9.
The bridge case beam changeover portion 8 of installing in the front portion of first paragraph bridge steel case beam 7, makes metamorphosis that nose girder 9 downwarps cause in bridge case beam changeover portion but not on pontic; The nose girder that changeover portion front portion is welded, nose girder weight is pontic 0.7 times, snapping into the front reduction of opposite bridge pier 11 risk of toppling.
As preferably, self-locking pushing tow rail clamping device 5-1 described in the utility model is comprised of two of left and right wedge and spring assembly.
The counter-force of self-locking pushing tow rail clamping device 5-1 makes wedge by track Automatic-clamping, and bolt is adjusted in two of rail clamping device bottoms can pull open rail clamping device wedge releasing clamping force, and safety is removed.
As preferably, sliding rail 4 described in the utility model is three above sliding rails, can many sliding rails be set according to the actual conditions of setting up variable cross-section steel bridge, many group self-locking synchronous push devices 5 are installed on sliding rail, described piston shoes correspondence is arranged on the sliding rail at each bridge section rear portion, facilitate variable cross-section steel bridge segmentation welding on the piston shoes of sliding rail one side, to opposite side pushing tow.
The method that adopts variable cross-section cantilever bridge case beam self-locking synchronous push system of the present utility model to construct is, adopt the self-locking synchronous push device 5 of variable cross-section cantilever bridge case beam, the method putting in place by nose girder 9 pushing tows, segmentation to the bridge case beam 7 of cantilever span railway lift, group to and welding, realize the pushing tow translation arrival destination locations in place of whole bridge case beam.1 railway one side bridge pier in figure, 10 is railway line, 11 is across railway opposite bridge pier.

Claims (5)

1. a variable cross-section cantilever bridge case beam self-locking synchronous push system, comprise the thrusting slip bridge box beam Welding assembly platform system being arranged on across railway one side, described thrusting slip bridge box beam Welding assembly platform system is by temporary supporting bridge pier, be arranged on the thrusting slip bridge box beam Welding assembly platform on temporary supporting bridge pier, the sliding rail being arranged on described thrusting slip bridge box beam Welding assembly platform forms, one group of piston shoes and one group of self-locking synchronous push device are installed on described sliding rail, one group of described self-locking synchronous push device is electrically connected with pushing tow automatic control system, it is characterized in that:
Described self-locking synchronous push device, comprise hydraulic pushing oil cylinder and self-locking pushing tow rail clamping device, described hydraulic pushing oil cylinder one end is hinged with the otic placode that is arranged on piston shoes side by bearing pin, the other end is with hinged by bearing pin and self-locking pushing tow rail clamping device on lock pushing tow rail clamping device, on described hydraulic pushing oil cylinder, be provided with distance measuring sensor and pressure sensor
On described piston shoes top, be provided for adjusting the adjustment cushion block of bridge type camber, thrust plate and the side limiting plate of piston shoes play before described piston shoes and when side is provided for preventing pushing tow respectively, in described piston shoes bottom and both sides, track contact site, be provided for limiting the railway limit plate that piston shoes are offset, bridge case beam is placed in piston shoes top, at the front end of first paragraph bridge case beam, is provided with bridge case beam changeover portion and nose girder.
2. variable cross-section cantilever bridge case beam self-locking synchronous push system according to claim 1, described self-locking pushing tow rail clamping device is comprised of two of left and right wedge and spring assembly.
3. variable cross-section cantilever bridge case beam self-locking synchronous push system according to claim 1, is characterized in that described sliding rail is three above sliding rails.
4. variable cross-section cantilever bridge case beam self-locking synchronous push system according to claim 1, is characterized in that described piston shoes correspondence is arranged on the sliding rail at each bridge section rear portion.
5. variable cross-section cantilever bridge case beam self-locking synchronous push system according to claim 1,0.7 times of it is characterized in that described described nose girder weight is pontic.
CN201320683435.1U 2013-11-01 2013-11-01 Box girder self-locking synchronous pushing system of variable-cross-section cantilever bridge CN203583371U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103541308A (en) * 2013-11-01 2014-01-29 鞍山东方钢构桥梁有限公司 Variable cross-section cantilever bridge box girder self-locking synchronization pushing system and construction method
CN105605006A (en) * 2016-01-27 2016-05-25 上海耐斯特液压设备有限公司 Hydraulic synchronous pushing, moving and transporting system
CN105625194A (en) * 2016-03-03 2016-06-01 中铁第六勘察设计院集团有限公司 Transverse movement in-position construction method of cable-stayed bridge
CN106192770A (en) * 2016-09-20 2016-12-07 江苏京沪重工有限公司 A kind of portable type is used for sliding pushing tow system and the gliding method thereof of bridge steel structural unit
CN109594480A (en) * 2018-12-28 2019-04-09 沈阳中辰钢结构工程有限公司 Steel box-girder pushing tow and fall girder construction process
CN109653076A (en) * 2018-12-24 2019-04-19 四川港航建设工程有限公司 Combined type flood control is passed the flood period lock head shellfish Lei Gangqiao and construction method
CN110644377A (en) * 2019-09-30 2020-01-03 中铁二院工程集团有限责任公司 Roller type beam body pushing construction device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103541308A (en) * 2013-11-01 2014-01-29 鞍山东方钢构桥梁有限公司 Variable cross-section cantilever bridge box girder self-locking synchronization pushing system and construction method
CN103541308B (en) * 2013-11-01 2015-04-15 鞍山东方钢构桥梁有限公司 Variable cross-section cantilever bridge box girder self-locking synchronization pushing system and construction method
CN105605006A (en) * 2016-01-27 2016-05-25 上海耐斯特液压设备有限公司 Hydraulic synchronous pushing, moving and transporting system
CN105625194A (en) * 2016-03-03 2016-06-01 中铁第六勘察设计院集团有限公司 Transverse movement in-position construction method of cable-stayed bridge
CN106192770A (en) * 2016-09-20 2016-12-07 江苏京沪重工有限公司 A kind of portable type is used for sliding pushing tow system and the gliding method thereof of bridge steel structural unit
CN106192770B (en) * 2016-09-20 2018-04-03 江苏京沪重工有限公司 A kind of portable type is used for the sliding pushing tow system and its gliding method of bridge steel structural unit
CN109653076A (en) * 2018-12-24 2019-04-19 四川港航建设工程有限公司 Combined type flood control is passed the flood period lock head shellfish Lei Gangqiao and construction method
CN109653076B (en) * 2018-12-24 2021-01-08 四川港航建设工程有限公司 Combined type flood control flood gate first bailey steel bridge and construction method
CN109594480A (en) * 2018-12-28 2019-04-09 沈阳中辰钢结构工程有限公司 Steel box-girder pushing tow and fall girder construction process
CN110644377A (en) * 2019-09-30 2020-01-03 中铁二院工程集团有限责任公司 Roller type beam body pushing construction device
CN110644377B (en) * 2019-09-30 2021-01-12 中铁二院工程集团有限责任公司 Roller type beam body pushing construction device

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Granted publication date: 20140507

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