CN105484166A - Ladder-shaped mast type cantilever assembling crane - Google Patents
Ladder-shaped mast type cantilever assembling crane Download PDFInfo
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- CN105484166A CN105484166A CN201610027716.XA CN201610027716A CN105484166A CN 105484166 A CN105484166 A CN 105484166A CN 201610027716 A CN201610027716 A CN 201610027716A CN 105484166 A CN105484166 A CN 105484166A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000013519 translation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
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- Structural Engineering (AREA)
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Abstract
The invention provides a ladder-shaped mast type cantilever assembling crane. The ladder-shaped mast type cantilever assembling crane comprises rack structures, running systems, winches, overhead travelling crane systems, rotary lifting hook groups, sling distributing systems, an electric system, a hydraulic system, steel wire ropes, a first hoisting segment anchoring system, finish rolling deformed steel bars and a general hoisting segment anchoring system, wherein the rack structures mainly consist of upper main beams, upper crossbeams, lower main beams, lower crossbeams, front slanting poles, middle slanting poles, rear slanting poles and winch platforms; landing legs on two sides of a cantilever assembling bridge girder erection machine need to be positioned in two U-shaped beams of dual U-shaped beam structures respectively; a bridge machine rack structure needs to span a middle evacuation platform; each running system mainly consists of a front sliding shoe connecting support, a front sliding shoe, a rear sliding shoe connecting support, a rear sliding shoe, a jacking landing leg, a running oil cylinder seat and a track. Compared with the prior art, the ladder-shaped mast type cantilever assembling crane disclosed by the invention has the beneficial effects of being simple and convenient to operate, high in applicability, high in beam erection efficiency, convenient to revolve, mount and disassemble, and low in revolving cost.
Description
Technical field
The present invention is a kind of ladder type masts type cantilever loop wheel machine, belongs to bridge span erecting machine technical field.
Background technology
Containing 20 place's Assembling Continuous Beam Bridge with Precast Sections between Shanghai rail transit No. 17 line elevated regions, beam sections is the U-shaped variable cross-section form be combined with box, and often joint joint segment length is 2.5 ~ 3.5 meters.This project has sections cantilever continuous U beam bridge 20, in across dividing 50m, 55m, 70m tri-kinds across footpath, be cross a river or across road, and intersperse among on the long circuit of 30km, have higher requirement to the applicability of Bridge Erector, safety.
20 bridges are all double-U-shaped nonprismatic continuous beam structure, and be all positioned on different flat, vertical curve, and owing to adopting short line casting construction, each prefabricated subsection all with fixed end mould for controlling benchmark, compared to traditional box structure of remaining silent, the more difficult control of two " U " beam hatch frame end mould precision.Cantilever accurate adjustment difficulty is large: two " U " beam adds box-beam structure, and it is many that depth of section direction becomes break, and change greatly to deck-molding along bridge, beam sections lays particular stress on more difficult leveling, and when beam sections installs location, 6 point coordinates precision will control within 2mm.
Summary of the invention
For the deficiency that prior art exists, the object of the invention is to provide a kind of ladder type masts type cantilever loop wheel machine, and to solve the problem proposed in above-mentioned background technology, the present invention is easy to use, convenient operation, good stability, and reliability is high.
To achieve these goals, the present invention realizes by the following technical solutions: a kind of ladder type masts type cantilever loop wheel machine, comprises rack construction, walking system, hoist engine, Overhead travelling crane system, shackle hook group, suspender distribution system, electrical system, hydraulic system, wire rope, the head section of hanging anchor system, fining twisted steel and the generally section of hanging anchor system, described rack construction is primarily of upper girder, top rail, lower girder, lower transverse beam, front brace, middle brace, rear brace and hoist engine platform composition, two side legs of cantilever Bridge Erector need respectively in two " U " beams of two " U " type girder construction, and bridge machine rack construction need cross over middle evacuation platform, and described walking system connects bearing primarily of front piston shoes, front piston shoes, rear piston shoes connect bearing, rear piston shoes, jacking supporting leg, walking oil cylinder seat and track composition, described walking system adopts walking and oil cylinder stroke is 600mm, and described Overhead travelling crane system is primarily of fixed pulley group roller box, transverse beam system and guide wheel system three parts composition, described shackle hook group is by running block roller box, hang top rail, hang lower transverse beam and boom system composition, wherein boom system is latching mechanism, centre add put thrust force aligning bearing realize suspension hook rotate, suspension hook two ends are fixed with nut bolt, and described suspender distribution system is by C type framework I, distribution beam I, arm-tie, C type framework II, distribution beam II and fining twisted steel ground tackle composition, distribution beam I arranges sideslip oil cylinder, the stroke of sideslip oil cylinder is 600mm, distribution beam II is provided with vertical shift oil cylinder, the stroke of vertical shift oil cylinder is 200mm, by regulate vertical sideslip oil cylinder can realize beam section in length and breadth to fine setting, described rack construction (1) bottom is provided with walking system, described walking system top is provided with hoist engine, described hoist engine side is provided with hydraulic system, described hydraulic system side is provided with Overhead travelling crane system, be connected with shackle hook group by steel wire bottom described Overhead travelling crane system, described electrical system is arranged on the top of fining twisted steel, is provided with the head section of hanging anchor system bottom described fining twisted steel, and the described head section of hanging anchor system side is provided with the generally section of hanging anchor system.
Further, the rack construction of described cantilever loop wheel machine adopts " ladder type " mast form, and described front brace, middle brace and rear brace are box beam structure.
Further, described fixed pulley group roller box, transverse beam system and the main material of guide wheel system are made up of shaped steel and part steel plate.
Further, can be regulated the lengthwise position of overhead traveling crane by the vertical shift oil cylinder be fixed on upper girder, the stroke of vertical shift oil cylinder is 1200mm, by being fixed on the sideslip oil cylinder in transverse beam system, can regulate the lateral attitude of roller box, the stroke of sideslip oil cylinder is 200mm.
Further, described hoist engine model is JM12.
Further, described electrical system controls by programmable controller PLC is unified.
Further, described hydraulic system is containing two hydraulic power units, and wherein two walking oil cylinders, two overhead traveling crane vertical shift oil cylinders and two overhead traveling crane sideslip oil cylinders share a hydraulic power unit; A suspender sideslip oil cylinder and two suspender vertical shift oil cylinders share another hydraulic power unit and oil cylinder all controls flexible with solenoid operated directional valve.
Beneficial effect of the present invention: a kind of ladder type masts type cantilever loop wheel machine of the present invention, this cantilever loop wheel machine is easy and simple to handle, applicability strong, efficiency of setting a roof beam in place is high, and possesses the features such as turnover peace is torn open conveniently, turnover expense is low.
(1) demand in place that under revolution suspension hook can meet different site condition, large-scale beam car is different.Boom system is set to latching mechanism, and centre adds puts thrust force aligning bearing and realizes the rotation of 360 degree, suspension hook.Between suspension top rail and suspension lower transverse beam, be provided with locking device simultaneously, after beam section is lifted by crane and is rotated in place, the lock(ing) bolt hanging top rail and hang between lower transverse beam is installed, restriction suspension hook rotates, prevent beam section from rotating freely in lifting process, after beam section promotes and puts in place, dismountable lock(ing) bolt, makes suspension hook group recover spinfunction.
(2) " ladder type " mast form of adopting of cantilever loop wheel machine, makes to instant invention overcomes the bridge formation difficult problem that two " U " type girder construction is brought.
(3) structure is simple, and overall weight is comparatively light, and the temporary structure moment of flexure produced at main Dun Chu during cantilever construction is less, is conducive to structural safety.
(4) cantilever loop wheel machine main couple size is relatively little, lighter in weight, closely transition truss integral can be removed, transports and install, and decreases routine techniques transition and removes and reinstall reception time, be convenient to the quick transition of crane span structure machine, assembled.
(5) this cantilever loop wheel machine possesses comprehensive exact posture adjustment function, and pose adjustment is convenient, adjustment required time is short.Overhead traveling crane and suspender increase by 6 Shift cylinders, and (overhead traveling crane arranges the vertical shift oil cylinder of two stroke 1200mm and the translation oil cylinder of 1 stroke 200mm; Suspender increases the vertical shift oil cylinder of two 200mm and the translation oil cylinder of 1 600mm), realize the translation of aerial 3 axis of beam sections and the rotation of 2 axis directions, reach the object of 360 degree of exact posture adjustment.Through on-the-spot actual test, 1 U beam can be completed half an hour from being lifted to exact posture adjustment in place.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the structural representation of a kind of ladder type masts type of the present invention cantilever loop wheel machine;
Fig. 2 is the hydraulic system structure schematic diagram of a kind of ladder type masts type of the present invention cantilever loop wheel machine;
In figure: 1 rack construction, 2 walking systems, 3 hoist engines, 4 Overhead travelling crane systems, 5 shackle hook groups, 6 suspender distribution systems, 7 hydraulic systems, 8 electrical systems, 9 wire rope, the 10 head section of hanging anchor systems, 11 fining twisted steels, the 12 generally section of hanging anchor system.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
Refer to Fig. 1-2, the invention provides a kind of technical scheme: a kind of ladder type masts type cantilever loop wheel machine, comprises rack construction 1, walking system 2, hoist engine 3, Overhead travelling crane system 4, shackle hook group 5, suspender distribution system 6, electrical system 7, hydraulic system 8, wire rope 9, the head section of hanging anchor system 10, fining twisted steel 11 and the generally section of hanging anchor system 12, described rack construction 1 is primarily of upper girder, top rail, lower girder, lower transverse beam, front brace, middle brace, rear brace and hoist engine platform composition, two side legs of cantilever Bridge Erector need respectively in two " U " beams of two " U " type girder construction, and bridge machine rack construction need cross over middle evacuation platform, and described walking system 2 connects bearing primarily of front piston shoes, front piston shoes, rear piston shoes connect bearing, rear piston shoes, jacking supporting leg, walking oil cylinder seat and track composition, described walking system 2 adopts walking and oil cylinder stroke is 600mm, and described Overhead travelling crane system 4 is primarily of fixed pulley group roller box, transverse beam system and guide wheel system three parts composition, described shackle hook group 5 is by running block roller box, hang top rail, hang lower transverse beam and boom system composition, wherein boom system is latching mechanism, centre add put thrust force aligning bearing realize suspension hook rotate, suspension hook two ends are fixed with nut bolt, and described suspender distribution system 6 is by C type framework I, distribution beam I, arm-tie, C type framework II, distribution beam II and fining twisted steel ground tackle composition, distribution beam I arranges sideslip oil cylinder, the stroke of sideslip oil cylinder is 600mm, distribution beam II is provided with vertical shift oil cylinder, the stroke of vertical shift oil cylinder is 200mm, by regulate vertical sideslip oil cylinder can realize beam section in length and breadth to fine setting, walking system 2 is provided with bottom described rack construction 1, described walking system 2 top is provided with hoist engine 3, described hoist engine 3 side is provided with hydraulic system 8, described hydraulic system 8 side is provided with Overhead travelling crane system 4, be connected with shackle hook group 5 by wire rope 9 bottom described Overhead travelling crane system 4, described electrical system 7 is arranged on the top of fining twisted steel 11, is provided with the head section of hanging anchor system 10 bottom described fining twisted steel 11, and the described head section of hanging anchor system 10 side is provided with the generally section of hanging anchor system 12.
The rack construction 1 of described cantilever loop wheel machine adopts " ladder type " mast form, described front brace, middle brace and rear brace are box beam structure, described fixed pulley group roller box, transverse beam system and the main material of guide wheel system are made up of shaped steel and part steel plate, the lengthwise position of overhead traveling crane can be regulated by the vertical shift oil cylinder be fixed on upper girder, the stroke of vertical shift oil cylinder is 1200mm, by being fixed on the sideslip oil cylinder in transverse beam system, the lateral attitude of roller box can be regulated, the stroke of sideslip oil cylinder is 200mm, described hoist engine 3 model is JM12, described electrical system 7 controls by programmable controller PLC is unified, described hydraulic system 8 is containing two hydraulic power units, wherein two walking oil cylinders, two overhead traveling crane vertical shift oil cylinders and two overhead traveling crane sideslip oil cylinders share a hydraulic power unit, a suspender sideslip oil cylinder and two suspender vertical shift oil cylinders share another hydraulic power unit and oil cylinder all controls flexible with solenoid operated directional valve.
When adopting this cantilever loop wheel machine to carry out free cantilever erection erection when work, first with Beam transportation vehicle, beam sections is transported to job site, lift each beam sections successively, lifting order is symmetrical lifting from the middle to both ends, past technology first brushing seam epoxy adhesive is pressed before lifting, interim prestressing force is all applied after every two segment docks completely, make to combine closely under prestressing force effect between sections, do not stay gap, wear permanent prestressed strand, and carry out the stretch-draw of permanent steel bundle, assembled successively until all sections rear last Bridge Erector unloadings in place.Carry out system dress to change, successively cast-in-place end bay closure segment and in across closure segment, and top board bundle is closed up in stretch-draw, forms continuous beam.
1, cantilever loop wheel machine assembling, adopts the assembling of 25t mobile crane ground.
2, adopt 150t mobile crane by cantilever loop wheel machine handling to middle pier 0# block T structure, anchor system consolidation.
3, electric fixtures debugging, examination.
4,1# cantilever sections is transported to assigned address (projected position of 1# sections under bridge) under bridge by Beam transportation vehicle, suspender is transferred under bridge after carrying out beam sections leveling process, connect suspender and beam sections with fining twisted steel, and anchoring is firm, by the lifting of both sides cantilever loop wheel machine symmetry.
5, the contraposition of 1# beam sections is assembled, installs auxiliary rod and finely tunes, exactitude position; Stiff skeleton is installed, prestressed pipeline; Set up wet seam suspension bracket between 0# sections and 1# sections, installation form; Build wet joint concrete, reach after requirement until intensity, carry out permanent prestressed stretch-draw, and carried out vacuum pipe mud jacking in 24 hours.
6, other sections of free cantilever erection adopt the construction of stem grafting seam, and in construction, adjacent 2 pieces of beam sections are bonded to an entirety by prefabricated girder segment no-solvent type epoxy resin adhesive material, it mainly plays the effects such as lubrication, crab-bolt, waterproof, transmission stress.
Cantilever loop wheel machine is in place---lifting beam section (installing interim stretching bed seat)---and Primary Location examination is spelled---inspection Check also process pipe joint---and is removed beam section (beam body staggers 20cm, and falls)---joint face is coated with adhesive material---beam section promotes, is adjacent to beam section---wear interim presstressed reinforcing steel manhole---formally locate---the interim presstressed reinforcing steel of stretch-draw---suspender stress system conversion (wearing vertical fining twisted steel)---wear permanent presstressed reinforcing steel---wait strong, tensioned prestressing bar, mud jacking----move cantilever loop wheel machine---next beam section is assembled.
7, after last section assembling completes, Bridge Erector Integral lifting is carried out transition to flat bed transport vehicle.
8, the location of beam sections and adjustment;
For guaranteeing the accurate location of beam sections, first six point coordinates provided according to precast yard before interim stretch-draw carry out the conversion of construction control coordinate, adopt level gauge and total powerstation to control the locus of beam sections according to six point coordinates after conversion, guarantee the tram of each each beam sections of hole.Beam sections must accurately be located when installing, and carries out temporary consolidation, and beam sections adjustment mode is as follows:
(1) high process control.Designing requirement is reached by elevator unit envoy Duan Liang vertical control point.
(2) mileage controls.Realize sections along bridge to translation by overhead traveling crane vertical shift oil cylinder, make its mileage reach designing requirement.
(3) axial line control.Completed bridge floor establishes axial control point, checks beam sections axis with total powerstation.If any deviation, utilize the level jack on hanging beam that beam body is adjusted to tram.
(4) planeness controls.Sections is vertical by adjustment suspender vertical shift, sideslip oil cylinder, lateral rotation is adjusted to the linear requirement of design.
More than show and describe general principle of the present invention and principal character and advantage of the present invention, to those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this manual is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of manual is only for clarity sake, those skilled in the art should by manual integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (7)
1. a ladder type masts type cantilever loop wheel machine, comprises rack construction, walking system, hoist engine, Overhead travelling crane system, shackle hook group, suspender distribution system, electrical system, hydraulic system, wire rope, the head section of hanging anchor system, fining twisted steel and the generally section of hanging anchor system, described rack construction is primarily of upper girder, top rail, lower girder, lower transverse beam, front brace, middle brace, rear brace and hoist engine platform composition, two side legs of cantilever Bridge Erector need respectively in two " U " beams of two " U " type girder construction, and bridge machine rack construction need cross over middle evacuation platform, and described walking system connects bearing primarily of front piston shoes, front piston shoes, rear piston shoes connect bearing, rear piston shoes, jacking supporting leg, walking oil cylinder seat and track composition, described walking system adopts walking and oil cylinder stroke is 600mm, and described Overhead travelling crane system is primarily of fixed pulley group roller box, transverse beam system and guide wheel system three parts composition, described shackle hook group is by running block roller box, hang top rail, hang lower transverse beam and boom system composition, wherein boom system is latching mechanism, centre add put thrust force aligning bearing realize suspension hook rotate, suspension hook two ends are fixed with nut bolt, and described suspender distribution system is by C type framework I, distribution beam I, arm-tie, C type framework II, distribution beam II and fining twisted steel ground tackle composition, distribution beam I arranges sideslip oil cylinder, the stroke of sideslip oil cylinder is 600mm, distribution beam II is provided with vertical shift oil cylinder, the stroke of vertical shift oil cylinder is 200mm, by regulate vertical sideslip oil cylinder can realize beam section in length and breadth to fine setting, walking system is provided with bottom described rack construction, described walking system top is provided with hoist engine, described hoist engine side is provided with hydraulic system, described hydraulic system side is provided with Overhead travelling crane system, be connected with shackle hook group by wire rope bottom described Overhead travelling crane system, described electrical system is arranged on the top of fining twisted steel, is provided with the head section of hanging anchor system bottom described fining twisted steel, and the described head section of hanging anchor system side is provided with the generally section of hanging anchor system.
2. a kind of ladder type masts type cantilever loop wheel machine according to claim 1, is characterized in that: the rack construction of described cantilever loop wheel machine adopts " ladder type " mast form, and described front brace, middle brace and rear brace are box beam structure.
3. a kind of ladder type masts type cantilever loop wheel machine according to claim 1, is characterized in that: described fixed pulley group roller box, transverse beam system and the main material of guide wheel system are made up of shaped steel and part steel plate.
4. a kind of ladder type masts type cantilever loop wheel machine according to claim 1, it is characterized in that: the lengthwise position that can be regulated overhead traveling crane by the vertical shift oil cylinder be fixed on upper girder, the stroke of vertical shift oil cylinder is 1200mm, by being fixed on the sideslip oil cylinder in transverse beam system, can regulate the lateral attitude of roller box, the stroke of sideslip oil cylinder is 200mm.
5. a kind of ladder type masts type cantilever loop wheel machine according to claim 1, is characterized in that: described hoist engine model is JM12.
6. a kind of ladder type masts type cantilever loop wheel machine according to claim 1, is characterized in that: described electrical system controls by programmable controller PLC is unified.
7. a kind of ladder type masts type cantilever loop wheel machine according to claim 1, is characterized in that: described hydraulic system is containing two hydraulic power units, and wherein two walking oil cylinders, two overhead traveling crane vertical shift oil cylinders and two overhead traveling crane sideslip oil cylinders share a hydraulic power unit; A suspender sideslip oil cylinder and two suspender vertical shift oil cylinders share another hydraulic power unit and oil cylinder all controls flexible with solenoid operated directional valve.
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| CN201610027716.XA CN105484166B (en) | 2016-01-15 | 2016-01-15 | A kind of ladder type masts type cantilever loop wheel machine |
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| CN201610027716.XA CN105484166B (en) | 2016-01-15 | 2016-01-15 | A kind of ladder type masts type cantilever loop wheel machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288044A (en) * | 2017-06-21 | 2017-10-24 | 腾达建设集团股份有限公司 | The assembled equipment of portable asymmetric bridge girder cantilever and its application process |
| CN107761574A (en) * | 2017-09-29 | 2018-03-06 | 中铁九局集团有限公司 | A kind of across electric railway Business Line swivel flute profile continuous beam mid-span closing device |
| CN109137759A (en) * | 2018-09-29 | 2019-01-04 | 中铁第四勘察设计院集团有限公司 | A kind of prestressed concrete box girder precast segment cantilever assembling method and system |
| CN110983992A (en) * | 2019-11-07 | 2020-04-10 | 中铁建大桥工程局集团第五工程有限公司 | Cantilever assembling construction process for double-U-box type composite variable-section assembled continuous beam bridge |
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| WO1983004274A1 (en) * | 1982-06-01 | 1983-12-08 | O^/Stlandske Spennbetong A-S | Arrangement for casting in sections of a prestressed concrete bridge in accordance with the cantilever construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288044A (en) * | 2017-06-21 | 2017-10-24 | 腾达建设集团股份有限公司 | The assembled equipment of portable asymmetric bridge girder cantilever and its application process |
| CN107761574A (en) * | 2017-09-29 | 2018-03-06 | 中铁九局集团有限公司 | A kind of across electric railway Business Line swivel flute profile continuous beam mid-span closing device |
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| CN109137759A (en) * | 2018-09-29 | 2019-01-04 | 中铁第四勘察设计院集团有限公司 | A kind of prestressed concrete box girder precast segment cantilever assembling method and system |
| CN109137759B (en) * | 2018-09-29 | 2023-12-19 | 中铁第四勘察设计院集团有限公司 | Precast cantilever assembling method and system for prestressed concrete box girder segment |
| CN110983992A (en) * | 2019-11-07 | 2020-04-10 | 中铁建大桥工程局集团第五工程有限公司 | Cantilever assembling construction process for double-U-box type composite variable-section assembled continuous beam bridge |
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| CN105484166B (en) | 2017-12-12 |
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