CN106567341A - Transverse synchronous slippage device of guide beams of bridge erecting machine and slippage construction method - Google Patents

Transverse synchronous slippage device of guide beams of bridge erecting machine and slippage construction method Download PDF

Info

Publication number
CN106567341A
CN106567341A CN201610987800.6A CN201610987800A CN106567341A CN 106567341 A CN106567341 A CN 106567341A CN 201610987800 A CN201610987800 A CN 201610987800A CN 106567341 A CN106567341 A CN 106567341A
Authority
CN
China
Prior art keywords
slippage
slide block
nose girder
oil cylinder
piston rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610987800.6A
Other languages
Chinese (zh)
Other versions
CN106567341B (en
Inventor
郭文军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway 12th Bureau Group Co Ltd
First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Original Assignee
China Railway 12th Bureau Group Co Ltd
First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway 12th Bureau Group Co Ltd, First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd filed Critical China Railway 12th Bureau Group Co Ltd
Priority to CN201610987800.6A priority Critical patent/CN106567341B/en
Publication of CN106567341A publication Critical patent/CN106567341A/en
Application granted granted Critical
Publication of CN106567341B publication Critical patent/CN106567341B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Abstract

The invention belongs to the technical field of guide beam moving and installation in bridge construction, provides a transverse synchronous slippage device of guide beams of a bridge erecting machine and a slippage construction method, and aims to solve technical problems of complex disassembly and assembly, long consumption time and high construction cost in guide beam moving and installation processes. The transverse synchronous slippage device comprises two parallelly arranged carrying beams which are vertically arranged under guide beams. Slippage grooves are longitudinally arranged on left and right sides of the top face of each carrying beams. Slide blocks are arranged between the carrying beams and the guide beams and are arranged in slippage grooves. The top faces of the slide blocks are fixedly connected with the bottom faces of the guide beams. The bottom faces of the slide blocks slide in the slippage grooves. An oil cylinder is arranged in each slippage groove. The piston rod of each oil cylinder stretches out and is fixedly connected with the side face of the corresponding slide block. The connection block ends of the oil cylinders are fixed in the corresponding slippage grooves of the top faces of the corresponding carrying beams. The slippage construction procedures comprise steps of installing the carrying beams; installing the slide blocks; fixing the oil cylinders; smearing lubricating oil; and starting a button to perform slippage. The slippage device and the slippage construction method are simple to operate, safe and controllable, and by using the slippage device and the slippage construction method to carry out construction, construction time is shortened and construction cost is reduced.

Description

Bridge Erector nose girder synchronous cross slide device and gliding construction method
Technical field
The invention belongs to nose girder moves dress technical field in bridge construction, and in particular to a kind of Bridge Erector nose girder synchronous cross is slided Moving device and gliding construction method.
Background technology
SPJ900/32 Bridge Erectors are designed to set up 900 tons of prestress box beams of high-speed railway, are supported using bilateral nose girder On Ω type rear car door frames, box middle car crossbeam and front leg strut crossbeam, for adaptation to market variations and reduction cost, bilateral nose girder Directly formed using eight or seven formula railway composed with emergency beams main truss component and fitting spelling groups, every 64 meters of nose girder length, weigh 110 tons.Build bridge Machine needs to remove nose girder when crossing tunnel, and cross needs for nose girder to re-start assembly behind tunnel, crosses assembled on roadbed behind tunnel During nose girder, need to set up bracing frame and lifted with two more than 200 tons cranes, when assembled on bridge floor, due to pier shaft height shadow Ring, need crane tonnage very big when crane is stood under bridge(More than 400 tons);When crane stands on bridge floor, due to the sky of box beam Box structure, crane stress point is only capable of propping up and is located at the web of beam body, causes crane leg to be unable to reach the state that stretch entirely, and then cuts down The hoisting weight of crane, therefore nose girder must merogenesis built spelling.Above physical features and method, are required for large tonnage crane, run into When mountain valley, river, support is not easy to set up, and causes construct consuming time length and construction cost height.
The content of the invention
Dismounting is complicated during the shifting of Bridge Erector nose girder is filled, expend the high technology of time length and construction cost to solve for the present invention Problem, there is provided a kind of Bridge Erector nose girder synchronous cross slide device and gliding construction method.
The technical solution used in the present invention is as follows:
A kind of Bridge Erector nose girder synchronous cross slide device, including the two hunchbacked beams be arrangeding in parallel, the hunchbacked beam is arranged on nose girder Lower section, and hunchbacked beam is vertically arranged with nose girder, the hunchbacked top surface of the beam left and right sides is along the longitudinal elongated setting slippage slot of camel beam, hunchbacked beam and nose girder Between slide block is set, slide block is arranged in slippage slot, and the top surface of the slide block is fixedly connected with the bottom surface of nose girder, the bottom surface of slide block Slide in slippage slot, be respectively provided with an oil cylinder in hunchbacked top surface of the beam slippage slot, the piston rod of oil cylinder stretch out and with the side of slide block It is fixedly connected, the contiguous block end of oil cylinder is fixed in hunchbacked top surface of the beam slippage slot, and the oil cylinder is connected with hydraulic power unit.
The end of the slide block arranges pin-and-hole, and pin-and-hole and the pin-and-hole of oil cylinder piston rod end of the slide block end match, The oil cylinder piston rod end is fixedly connected with slide block end by pin.
Lubricant grease is set between the bottom surface of the slide block and hunchbacked beam slippage slot.
Bridge Erector nose girder synchronous cross gliding construction method, its Specific construction step is:
(1)Beam is carried in installation on the back:Beam car packs two and carries beam on the back and sails in bridge formation ventral, carries beam on the back by two with Bridge Erector trolley and hangs respectively Rise and rotate, make to carry on the back beam into the corresponding hard point position in nose girder bottom, while carrying beam bottom load draw-in groove and beam car top surface on the back Trolley track is mutually engaged;
(2)Slide block is installed:Slide block is respectively clamped into into the respective point position of nose girder, raising beam car cushion cylinder makes beam car and carries on the back Beam is integrally raised, until carry top surface of the beam slippage slot on the back matching with slide block bottom surface;
(3)Fixed oil cylinder:Oil cylinder contiguous block is connected and is revolved with M18 high-strength bolts with the tap bolt hole carried on the back in beam slippage slot Tightly, oil cylinder set pin-and-hole is mutually fixed with contiguous block pin-and-hole with the pins of φ 30;Start button, stretches out cylinder piston rod and by its pin-and-hole Insertion slide block pin-and-hole, is mutually fixed after two pin-and-hole para-positions with the pins of φ 30;
(4)Apply lubricating oil:The debris in beam slippage slot will be carried on the back to clean out, then lubricant grease slippage slot is applied in rag It is interior;
(5)Sliding(Nose girder merges):Start button, all cylinder piston rods bounce back certain stroke simultaneously, and piston rod drags slide block Mobile, slide block drives nose girder synchronously to follow up;Cylinder piston rod bounces back in place, releases start button, the oil cylinder that comes loose set contiguous block spiral shell Bolt, start button oil supply oil supply cylinder, piston rod promotes oil cylinder set reach during stretching out, when oil cylinder set contiguous block reaches next Fuel cut-off during individual tap bolt eyelet, screws contiguous block and carries beam connecting bolt, coating lubricating oil fat on the back;Start button, oil cylinder Piston rod bounces back, slide block movement, nose girder displacement;So circulation, until two nose girders are displaced to specified location;Then oil cylinder is installed To nose girder outside, using the flexible pushing tow slide block of cylinder piston rod, two nose girders are made to be slid onto together;
(6)Sliding(Nose girder separates in place):Beam car is born and carries beam on the back and nose girder advances to bridge floor infield, firm to carry beam support on the back Frame;It is then electrified to and start button, by above-mentioned steps(5)In operation progressively nose girder slid onto carry beam specified location on the back.
Beneficial effects of the present invention:The present invention is simple to operate, short using engineering time during present invention construction, construction cost It is low, it is embodied as following several respects:
(1)Operating aspect:Easy to operate, safely controllable, precision of the invention is higher.
(2)Time aspect:Original crane lifts method and tears open, transports, spelling two nose girders, 9 days minimum used times.Applied using the present invention Work, nose girder is in place only with 3 day time.
(3)Cost aspect:Crane lifts method and completes that two nose girders are torn open, transport, spelling operation altogether need to be with 230 tons of crane machine-team 11 Individual, machine-team takes based on 20000.00 yuan, altogether 220000.00 yuan of expense;When high pier bridge floor is assembled, need to be with 400 tons of cranes, its Machine-team takes for 40000.00 yuan.And often occur once to tear spelling open, it is necessary to produce above-mentioned expense.Using present invention construction, beam is carried on the back And synchronization-sliding device is used in turn by 10 times, therefore 60000.00 yuan of share the expenses every time.
Description of the drawings
Fig. 1 is the front view of synchronous cross slide device of the present invention;
Fig. 2 is the top view of synchronous cross slide device of the present invention;
Fig. 3 is the structural representation of slide block;
In figure:1- camel beams, 2- Bridge Erector nose girders, 3- slippage slots, 4- slide blocks, 5- oil cylinders, 6- pin-and-holes.
Specific embodiment
As shown in Figure 1, 2, a kind of Bridge Erector nose girder synchronous cross slide device, including the two hunchbacked beams 1 be arrangeding in parallel, it is described Hunchbacked beam 1 is arranged on the lower section of nose girder 2, and hunchbacked beam 1 is vertically arranged with nose girder 2, and the top surface left and right sides of hunchbacked beam 1 is logical along the hunchbacked longitudinal direction of beam 1 It is long that slippage slot 3 is set, some screwed holes are set on slippage slot 3, slide block 4 is set between hunchbacked beam 1 and nose girder 2, slide block 4 is arranged on cunning Move in groove 3, the top surface of the slide block 4 is fixedly connected with the bottom surface of nose girder 2, the bottom surface of slide block 4 is slided in slippage slot 3, hunchbacked beam 1 Oil cylinder 5 is respectively provided with top surface slippage slot 3, the piston rod of oil cylinder 5 stretches out and is fixedly connected with the side of slide block 4, the company of oil cylinder 5 Connect block end to be fixed in the top surface slippage slot 3 of hunchbacked beam 1, the oil cylinder 5 is connected with hydraulic power unit.
As shown in figure 3, the end of the slide block 4 arranges pin-and-hole 6, pin-and-hole 6 and the piston rod of oil cylinder 5 of the end of the slide block 4 The pin-and-hole at end matches, and the tailpiece of the piston rod of the oil cylinder 5 is fixedly connected with the end of slide block 4 by pin.
Lubricant grease is set between the bottom surface of the slide block 4 and the hunchbacked slippage slot 3 of beam 1.
Actuator in the present invention manipulates oil cylinder using hydraulic power unit, to meet sliding velocity at the uniform velocity, steadily;Carrying beam on the back In motor process, in order to eliminate due to slide block and slippage slot mismachining tolerance and nose girder scene, there is not frictional force in abswolute level etc. It is unequal, so as to cause oil cylinder movement asynchronous, or even there is stuck phenomenon, the hydraulic power unit drives and adopts pressure, position The PLC control methods of two close cycles.According to calculating, hydraulic jack is using HSGK-140/100-2501-750 × 1280, pulling force 150.8KN, range is 730mm.Sliding surface material is Q345B, and face sand paper rust cleaning polishing is slided up and down during operation, is smeared A little lubricant grease.
The technological process of Bridge Erector nose girder synchronous cross gliding construction method is:Installation is carried beam on the back, installs slide block, fixing oil Cylinder, coating lubricating oil, start button enter line slip, and its Specific construction step is:
(1)Beam is carried in installation on the back:Beam car packs two and carries beam on the back and sails in bridge formation ventral, carries beam on the back by two with Bridge Erector trolley and hangs respectively Rise and rotate, make to carry on the back beam into the corresponding hard point position in nose girder bottom, while carrying beam bottom load draw-in groove and beam car top surface on the back Trolley track is mutually engaged;
(2)Slide block is installed:16 slide blocks are respectively clamped into into the respective point position of nose girder, raising beam car cushion cylinder makes beam car And carry beam on the back and integrally raise, until carry top surface of the beam slippage slot on the back matching with slide block bottom surface;
(3)Fixed oil cylinder:Oil cylinder contiguous block is connected and is revolved with M18 high-strength bolts with the tap bolt hole carried on the back in beam slippage slot Tightly, oil cylinder set pin-and-hole is mutually fixed with contiguous block pin-and-hole with the pins of φ 30;Start button, stretches out cylinder piston rod and by its pin-and-hole Insertion slide block pin-and-hole, is mutually fixed after two pin-and-hole para-positions with the pins of φ 30;
(4)Apply lubricating oil:The debris in beam slippage slot will be carried on the back to clean out, then lubricant grease slippage slot is applied in rag It is interior;
(5)Sliding(Nose girder merges):Start button, all cylinder piston rods bounce back certain stroke simultaneously, and piston rod drags slide block Mobile, slide block drives nose girder synchronously to follow up;Cylinder piston rod bounces back in place, releases start button, the oil cylinder that comes loose set contiguous block spiral shell Bolt, start button oil supply oil supply cylinder, piston rod promotes oil cylinder set reach during stretching out, when oil cylinder set contiguous block reaches next Fuel cut-off during individual tap bolt eyelet, screws contiguous block and carries beam connecting bolt, coating lubricating oil fat on the back;Start button, oil cylinder Piston rod bounces back, slide block movement, nose girder displacement;So circulation, until two nose girders are displaced to specified location;Then oil cylinder is installed To nose girder outside, using the flexible pushing tow slide block of cylinder piston rod, two nose girders are made to be slid onto together;In slipping, at any time tightly Gu 10 tons of bottle gouards moved by hands of overturn-preventing.Meanwhile, each creep setpoint sends someone to check slip condition, bolt fastening situation, pin locking Situation etc.;
(6)Sliding(Nose girder separates in place):Beam car is born and carries beam on the back and nose girder advances to bridge floor infield, firm to carry beam support on the back Frame;It is then electrified to and start button, by above-mentioned steps(5)In operation progressively nose girder slid onto carry beam specified location on the back.
The present invention utilizes principle of confounding, and oil cylinder synchronous pulling is realized under PLC controls, reaches nose girder synchronization-sliding in place, Construction is carried out using the present invention and shortens the engineering time, reduce construction cost.
The slide device of the present invention is applied to the transverse shifting of all large-tonnage steel trusses.

Claims (4)

1. a kind of Bridge Erector nose girder synchronous cross slide device, it is characterised in that:Including the two hunchbacked beams be arrangeding in parallel(1), it is described Hunchbacked beam(1)It is arranged on nose girder(2)Lower section, and hunchbacked beam(1)With nose girder(2)It is vertically arranged, hunchbacked beam(1)The top surface left and right sides is along camel Beam(1)The elongated setting slippage slot in longitudinal direction(3), hunchbacked beam(1)With nose girder(2)Between slide block is set(4), slide block(4)It is arranged on sliding Groove(3)It is interior, the slide block(4)Top surface and nose girder(2)Bottom surface be fixedly connected, slide block(4)Bottom surface in slippage slot(3)Interior cunning It is dynamic, hunchbacked beam(1)Top surface slippage slot(3)Inside it is respectively provided with oil cylinder(5), oil cylinder(5)Piston rod stretch out and and slide block(4)Side It is fixedly connected, oil cylinder(5)Contiguous block end be fixed on hunchbacked beam(1)Top surface slippage slot(3)It is interior, the oil cylinder(5)With hydraulic power unit It is connected.
2. a kind of Bridge Erector nose girder synchronous cross slide device according to claim 1, it is characterised in that:The slide block (4)End arrange pin-and-hole(6), the slide block(4)The pin-and-hole of end(6)With oil cylinder(5)The pin-and-hole of tailpiece of the piston rod matches, institute State oil cylinder(5)Tailpiece of the piston rod and slide block(4)End is fixedly connected by pin.
3. a kind of Bridge Erector nose girder synchronous cross slide device according to claim 1 and 2, it is characterised in that:The cunning Block(4)Bottom surface and hunchbacked beam(1)Slippage slot(3)Between lubricant grease is set.
4. the gliding construction method of the Bridge Erector nose girder synchronous cross slide device being based on described in claim 3, it is characterised in that Specific construction step is:
(1)Beam is carried in installation on the back:Beam car packs two and carries beam on the back and sails in bridge formation ventral, carries beam on the back by two with Bridge Erector trolley and hangs respectively Rise and rotate, make to carry on the back beam into the corresponding hard point position in nose girder bottom, while carrying beam bottom load draw-in groove and beam car top surface on the back Trolley track is mutually engaged;
(2)Slide block is installed:Slide block is respectively clamped into into the respective point position of nose girder, raising beam car cushion cylinder makes beam car and carries on the back Beam is integrally raised, until carry top surface of the beam slippage slot on the back matching with slide block bottom surface;
(3)Fixed oil cylinder:Oil cylinder contiguous block is connected and is revolved with M18 high-strength bolts with the tap bolt hole carried on the back in beam slippage slot Tightly, oil cylinder set pin-and-hole is mutually fixed with contiguous block pin-and-hole with the pins of φ 30;Start button, stretches out cylinder piston rod and by its pin-and-hole Insertion slide block pin-and-hole, is mutually fixed after two pin-and-hole para-positions with the pins of φ 30;
(4)Apply lubricating oil:The debris in beam slippage slot will be carried on the back to clean out, then lubricant grease slippage slot is applied in rag It is interior;
(5)Sliding(Nose girder merges):Start button, all cylinder piston rods bounce back certain stroke simultaneously, and piston rod drags slide block Mobile, slide block drives nose girder synchronously to follow up;Cylinder piston rod bounces back in place, releases start button, the oil cylinder that comes loose set contiguous block spiral shell Bolt, start button oil supply oil supply cylinder, piston rod promotes oil cylinder set reach during stretching out, when oil cylinder set contiguous block reaches next Fuel cut-off during individual tap bolt eyelet, screws contiguous block and carries beam connecting bolt, coating lubricating oil fat on the back;Start button, oil cylinder Piston rod bounces back, slide block movement, nose girder displacement;So circulation, until two nose girders are displaced to specified location;Then oil cylinder is installed To nose girder outside, using the flexible pushing tow slide block of cylinder piston rod, two nose girders are made to be slid onto together;
(6)Sliding(Nose girder separates in place):Beam car is born and carries beam on the back and nose girder advances to bridge floor infield, firm to carry beam support on the back Frame;It is then electrified to and start button, by above-mentioned steps(5)In operation progressively nose girder slid onto carry beam specified location on the back.
CN201610987800.6A 2016-11-10 2016-11-10 Bridge Erector nose girder synchronous cross slide device and gliding construction method Active CN106567341B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610987800.6A CN106567341B (en) 2016-11-10 2016-11-10 Bridge Erector nose girder synchronous cross slide device and gliding construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610987800.6A CN106567341B (en) 2016-11-10 2016-11-10 Bridge Erector nose girder synchronous cross slide device and gliding construction method

Publications (2)

Publication Number Publication Date
CN106567341A true CN106567341A (en) 2017-04-19
CN106567341B CN106567341B (en) 2018-06-26

Family

ID=58540995

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610987800.6A Active CN106567341B (en) 2016-11-10 2016-11-10 Bridge Erector nose girder synchronous cross slide device and gliding construction method

Country Status (1)

Country Link
CN (1) CN106567341B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113175223A (en) * 2021-04-25 2021-07-27 中建七局第四建筑有限公司 Synchronous sliding structure of performance theater steel structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201620361U (en) * 2010-03-05 2010-11-03 北京万桥兴业机械有限公司 Displacement type integration bridging machine of carrying and erecting girders
RU2455420C1 (en) * 2011-03-01 2012-07-10 Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" Rolling scaffold
CN104631334B (en) * 2014-12-23 2016-05-18 郑州新大方重工科技有限公司 The middle part bracing or strutting arrangement of large-tonnage Bridge Erector
CN105839547A (en) * 2016-06-12 2016-08-10 中铁二局集团有限公司 Adjustable small-radius bridge girder erection machine and bridge girder erection method
CN205663197U (en) * 2016-05-04 2016-10-26 中国十九冶集团有限公司 Creeping formwork construction is with two track roof beam devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201620361U (en) * 2010-03-05 2010-11-03 北京万桥兴业机械有限公司 Displacement type integration bridging machine of carrying and erecting girders
RU2455420C1 (en) * 2011-03-01 2012-07-10 Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" Rolling scaffold
CN104631334B (en) * 2014-12-23 2016-05-18 郑州新大方重工科技有限公司 The middle part bracing or strutting arrangement of large-tonnage Bridge Erector
CN205663197U (en) * 2016-05-04 2016-10-26 中国十九冶集团有限公司 Creeping formwork construction is with two track roof beam devices
CN105839547A (en) * 2016-06-12 2016-08-10 中铁二局集团有限公司 Adjustable small-radius bridge girder erection machine and bridge girder erection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113175223A (en) * 2021-04-25 2021-07-27 中建七局第四建筑有限公司 Synchronous sliding structure of performance theater steel structure

Also Published As

Publication number Publication date
CN106567341B (en) 2018-06-26

Similar Documents

Publication Publication Date Title
CN202672047U (en) Walking type jacking and pushing device
CN103334381B (en) Full-bracket track-bogie bearing and moving device and construction method for installing steel box girders
CN103742168B (en) Cast anchor hole, switch hole independence lining trolley in tunnel
CN201704630U (en) Slippage die carrier of concrete cast-in-situ continuous beam
CN110130229A (en) It a kind of several juxtaposed double cantilever erections machines and its sets a roof beam in place and passing method
CN203049466U (en) Downward bracket self-moving formwork bridge fabrication machine
CN102953343A (en) Descending bracket self-mobile model framework bridge fabrication machine
CN105507165B (en) Hanging basket for corrugated steel web plate construction and construction process
CN203021883U (en) Wheel-track railway track laying unit
CN102094392A (en) Lower supported hanging basket in bridge construction and application thereof
CN201801818U (en) Bridge erecting machine capable of erecting double-track twin beams at tunnel entrance by zero distance
CN101736703A (en) 3000t special bridge girder erection machine for integrally erecting 120m-span double-layer four-line steel beam bridge for highway and railway
CN202544854U (en) Lining trolley for subway station
CN110258352A (en) The steel reinforced concrete combined bridge construction method that two bridgings are done
CN103074829A (en) Railway switch changing construction method and railway switch track laying unit thereof
CN106758872A (en) Wavelike steel webplate SCC engineering methods hang movable hanging basket and the method using its construction with car convolution
CN206800208U (en) Constructed by cross for precast segmental beam the Auxiliary support leg structure of Bridge Erector
CN110205948A (en) A kind of expanded letter Bridge Erector and its erection method
CN204343172U (en) A kind of Bridge Erector
CN102071641B (en) Cement beam packs bridge machine cloth supporting leg type integration of transporting and building Bridge Erector and bridge formation engineering method thereof
CN105735142A (en) Bridge girder erection machine for prestressed concrete bridge precast section span-by-span splicing construction
CN109778713A (en) A kind of steel truss girder bridge scene suspension and slipping assembly device and method
CN106567341A (en) Transverse synchronous slippage device of guide beams of bridge erecting machine and slippage construction method
CN211547804U (en) Cantilever type retaining wall rapid construction device
CN205529915U (en) Ladder type masts type hangs pieces together loop wheel machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant