CN101117793A - Steelwork pipe arch bridge float-dragging construction method - Google Patents
Steelwork pipe arch bridge float-dragging construction method Download PDFInfo
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- CN101117793A CN101117793A CNA2007100551023A CN200710055102A CN101117793A CN 101117793 A CN101117793 A CN 101117793A CN A2007100551023 A CNA2007100551023 A CN A2007100551023A CN 200710055102 A CN200710055102 A CN 200710055102A CN 101117793 A CN101117793 A CN 101117793A
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Abstract
The present invention discloses a construction method of float dragging for a steel structure pipe arch bridge, which prefabricates structures of the pipe arch bridge step by step at the construction site and assembles at an assembly jig, after being unloaded, with a special laid rail, the arch bridge completely slides to the riverside, the front end is moved to a pontoon or a floating boat with an appropriate tonnage, mechanical dragging for crossing the river to the other bank of the river, and the construction of the bridge is completed. During the process, an optical fiber control technology is used to monitor the construction to ensure the construction quality and the security with a video recorder, an optical fiber sensor, a total station, etc. arranged at the construction site. The method in the present invention affects less on the river channel shipping and the water ecology, and has the advantages of reasonable technology, high efficiency, short period for the project, low cost for employed measures, reduction of engineering cost, guarantee of project quality and construction safety and sound economic and social benefits.
Description
One. technical field: the present invention relates to a kind of job practices of steelwork pipe arch bridge, particularly relate to a kind of steelwork pipe arch bridge float-dragging construction method.
Two. background technology: China is vast in territory, and oil and natural gas skewness, need long apart from transfer oil and natural gas, in the construction of oil and natural gas conveyance conduit, often run into the situation that needs to cross over rivers, owing to be subjected to economy, technology, the factor affecting of aspects such as operation and environmental protection, many pipe works are the schemes of laying on the bridge that adopt when the river crossing more, therefore all to carry out the leap construction of river truss, the construction technology of using mainly contains at present: 1, the cabling construction technology, it need make cabling Sarasota and gravity earth anchor by oneself, and than higher, use occasion is restricted to the transportation condition of two sides and site requirements; 2, transportation by driving technology: it needs large vessel and crane barge, the cost height, and erect the vertical lifting portal frame on the water and also be difficult to realize; 3, trestle adds the technology of vertical lifting: it need set up trestle, also needs to use the vertical lifting of the hanging device that is erected in advance on the bridge pier in place, needs great deal of steel, the cost height, and need barge container to cooperate, also there is the navigation problem that influences.
(publication number is CN1598154A to Chinese patent, application number is 200410040709.0) a kind of " crossing the construction technology that river truss suspention is crossed over " disclosed, this construction technology is to fix the rivers two sides build man-made island that bridge pier need be crossed over, assembled the river truss then, portal frame by another bank is crossed the river with the truss straight line parallel traction that assembles, by the straddle truck on the bridge pier truss is lifted on the bridge pier after after laterally moving, arriving vertical lifting position, the present invention does not need barge container and crane barge, simultaneously owing to be that the straight line parallel traction is crossed the river, can not fall into danger in the river because of swing cause the river truss too greatly so cross the river truss.But, it need build very big portal frame, and cost is higher, in addition, portal frame is to crossing the existing horizontal pull of river truss, vertical tension is arranged again, and in drawing process, horizontal pull and vertical tension change constantly, caused the river truss to produce distortion easily, and then influencing the quality of river truss, its another weak point is: crossing needs laterally to move after the river truss is crossed the river, has increased the difficulty and the construction cost of construction.
Three. the content of invention:
Purpose of the present invention: overcome the deficiencies in the prior art, provide a kind of technological process rationally, cost is lower, efficient is high, little and do not destroy the steelwork pipe arch bridge float-dragging construction method of pipe arch bridge structure to the navigation channel influence.
Technical scheme of the present invention: a kind of steelwork pipe arch bridge float-dragging construction method may further comprise the steps:
A. earlier the job site of one side is assembled into integral body then with the pipe arch bridge respective members section of being prefabricated into progressively on the assembling moulding bed on the riverbank, and the unloading back utilizes the dedicated track of laying that the arch bridge integral level is slid onto the river bank;
B, arch bridge pushing tow to bank is made the unsettled water surface that stretches in arch rib end, buoyancy tank or hull divide the compartment water filling and are located in the arch rib below, relevant jack is also slowly become flexible in draining then, arch rib one end is loaded and is fixed on the transport support of buoyancy tank or hull, and seal tight arch rib with wire rope, control buoyancy tank or hull divide the water yield in the compartment, constantly adjust floating towboat absolute altitude and levelness, make arch bridge be in the state of moving horizontally all the time;
C, the pulling equipment of corresponding specification respectively is set in the two sides, river, the haulage cable of two sides pulling equipment is connected respectively with near the buoyancy tank on this bank or a side of hull by assembly pulley;
The pulling equipment of d, unlatching two sides slowly drags buoyancy tank or hull, guarantees floating stationarity and directionality of dragging;
E, pull in to shore after, buoyancy tank or hull divide that water filling slowly reduces absolute altitude in the compartment, make the arch rib bracket in place on the pedestal of bank, prop up pad and fixation at the arch springing place;
F, dismounting haulage cable, the two sections arch ribs splicings of two ends residue that should imbed cushion cap are in place;
G, build arch bridge two ends cushion cap, the fixing rib pin, processing finishes up.
Drag in the process floating, each seals the both sides of arch rib to earth anchor with 4 wire rope, do not topple over when dragging floating to guarantee arch rib, and along with the constantly angle and the dynamics of adjustment lashing of moving of buoyancy tank or hull; After pulling in to shore, the arch rib both sides are tight with the cable wind rope envelope.
Drag in the process floating, on buoyancy tank or hull, establish three spacing wire rope, wherein, two on opposite bank, one of this bank upstream side is to guarantee floating directionality of dragging.
Drag in the process floating, gait of march should be controlled within 2 m/mins, and leave certain test and observation interval, floating dragging stopped to move ahead every 30 minutes, the stress situation and the arch bridge Deformation Member situation of each member of observation arch bridge, rectify a deviation, in the middle of floating dragging, shake the influence that produces altogether to eliminate arch bridge.
The pulling equipment of two sides is respectively two hoist engines.Described arch rib is a trichord tubular type space tube truss structure.
Utilize the optical fiber control technology by on-the-spot video camera, Fibre Optical Sensor and the total powerstation that is provided with, assembly unit arch rib, support dismounting, the firm twisted wire of stretch-draw, lifting main couple, the floating work progresss that drag etc. are all implemented effective monitorings, guarantee that different construction stage arch springing horizontal movements, vault vertical displacement, each measuring point stress etc. meet the requirements.
Beneficial effect of the present invention:
1, technological process of the present invention is rationally advanced, drag in the process floating, buoyancy tank or hull are provided with some compartments, control buoyancy tank or hull divide the water yield in the compartment, can constantly adjust floating towboat absolute altitude and levelness, make arch bridge remain the balance mobile status, avoid the excessive deformation of pipe arch bridge like this, guarantee the steadiness of pipe arch bridge connecting portion, improve the safety that pipe arch bridge sets up.
2, the length direction of buoyancy tank of the present invention or hull is identical with the river direction, has reduced the impact force of river to buoyancy tank or hull like this, is convenient to buoyancy tank or hull and moves according to set course line, has reduced the drift of buoyancy tank or hull simultaneously.
3, buoyancy tank or the floating hauling pipe road of hull arch bridge are adopted in invention, floating drag end after, the two ends of pipe arch bridge are in place on the pedestal of bank, do not need traversing and lifting, can directly carry out fixedly connectedly, cut down the number of intermediate links, and reduce construction cost.
4, the arch rib both sides of pipe arch bridge of the present invention are respectively sealed to earth anchor with 4 wire rope, and along with the angle and the dynamics of constantly adjusting lashing that move of buoyancy tank, after pulling in to shore, the arch rib both sides are tight with the cable wind rope envelope, make arch rib be unlikely to occur to guarantee construction safety like this to the oblique defective of a lateral deviation.
5. establish three spacing wire rope on buoyancy tank of the present invention or the hull, wherein, two on opposite bank, one of this bank upstream side has guaranteed floating directionality of dragging, in addition, drag in the process floating, the pulling equipment of two sides slowly drags buoyancy tank or hull, can guarantee floating stationarity and directionality of dragging, can also adjust floating speed of dragging at any time according to actual conditions, easy to operate.
6, efficient height of the present invention, little to the navigation channel influence, piece together tubulation road arch bridge owing to adopt the job site of one side on the riverbank, do not influence the shipping in river during this time, only when floating dragging, carry out iceound, and floating dragging generally only needed to finish in tens hours, its iceound time is far smaller than the iceound time that existing arch bridge sets up, and greatly reduces the shipping loss.
7, the present invention utilizes the optical fiber control technology by on-the-spot video camera, Fibre Optical Sensor and the total powerstation that is provided with whole work progresss to be implemented effective monitoring, guarantees that different construction stage arch springing horizontal movements, vault vertical displacement, each measuring point stress etc. meet the requirements.
8, the present invention is widely used in different spans cross the river steel work arch bridge or steel truss engineering, is easy to promote, and has also reduced the secondary pollution to river, and environment protecting is obvious, has good economic and social benefit.
Four. description of drawings:
Fig. 1 is the floating traction plane schematic diagram that drags of steelwork pipe arch bridge float-dragging construction method;
Fig. 2 is the process chart that arch bridge is made in the steelwork pipe arch bridge float-dragging construction method;
Fig. 3 is the whole floating process chart that drags in the steelwork pipe arch bridge float-dragging construction method.
Five. the specific embodiment:
Embodiment one: referring to Fig. 1, Fig. 2 and Fig. 3, and among the figure, 1-bank pedestal, 2-earth anchor, 3-opposite bank rack winch, 4-assembly pulley, the spacing wire rope of 5-, 6-haulage cable, this bank of 7-hoist engine, 8-pipeline bridge (arch bridge), 9-river course, the floating equipment (buoyancy tank or hull) that drags of 10-.
Striding 800 tons heavy steelwork pipe arch bridges with 150 meters is that example is described in detail its job practices:
1, the manufacture craft flow process (referring to Fig. 2) of pipe arch bridge:
According to designing requirement, it is 2m straight steel pipe section that roll of steel plate is made length, with the sandblast delivery unit of straight steel pipe group that is up to the standards to becoming three one to save, the assembly unit unit of about 12 meters of length is docked into by the arch bridge centroidal line in the anticorrosion back of derusting by sandblasting, connects with web member in the assembly unit unit about with three 12 meters on the assembly unit frame then.
Steel tube arch rib is divided into plurality of sections (imbed 2 sections of cushion cap sections, all the other are interlude).Assembling is on-the-spot interlude is assembled in the river bank bracket leg is dragged on the bank on.The butt welding circumferential weld, treat that every section arch rib is assembled into a unit (two adjacent arch ribs and K shape are supported), the next unit of order assembly unit again, it is intact to treat that whole interludes and K shape are supported assembly unit, temporary rod is installed, is removed moulding bed and stretch-draw temporary rod, the bridge floor that suspension rod and division system perform is installed then, mend the brush anticorrosive paint at last, prepare to cross the river.
2, pipe arch bridge floating drags technological process (referring to Fig. 3):
A. utilize the dedicated track of laying that arch bridge 8 integral levels are slid onto the river bank;
B, arch bridge 8 pushing tows are made the unsettled water surface that stretches in arch rib end to the bank, the compartment water filling in 10 fens of buoyancy tank or hull also is located in the arch rib below, relevant jack is also slowly become flexible in draining then, arch rib one end is loaded and is fixed on the transport support of buoyancy tank or hull 10, and seal tight arch rib with wire rope, 10 fens interior water yields of compartment of control buoyancy tank or hull are constantly adjusted floating towboat absolute altitude and levelness, make arch bridge 8 keep equilibrium state; Drag in the process floating, arch bridge 8 is on the same horizon all the time, avoids the malformation of arch bridge 8.
C, the pulling equipment (two hoist engines 3,7) of corresponding specification respectively is set in the two sides, river, the haulage cable of two sides pulling equipment is connected respectively with near the buoyancy tank on this bank or a side of hull 10 by assembly pulley 4;
D, unlatching pulling equipment slowly drag buoyancy tank or hull, and the pulling equipment of two sides carries out synchronously, to guarantee floating stationarity and directionality of dragging;
E, pull in to shore after, water filling slowly reduces absolute altitude in 10 fens compartments of buoyancy tank or hull, makes the arch rib bracket in place on bank pedestal 1, props up pad and fixation at the arch springing place;
F, dismounting haulage cable 6, the two sections arch ribs splicings of two ends residue that should imbed cushion cap are in place;
G, build arch bridge two ends cushion cap, the fixing rib pin finishes up and handles and organize relevant department to carry out an acceptance inspection.
In addition, drag in the process floating, each seals the both sides of arch rib to earth anchor with 4 wire rope, and along with continuous angle and the dynamics of adjusting lashing of moving of buoyancy tank or hull 10; After pulling in to shore, the arch rib both sides are tight with the cable wind rope envelope; Establish three spacing wire rope on buoyancy tank or the hull 10, wherein, opposite bank (southern bank) two, one of this bank (northern bank) upstream side is to guarantee floating directionality of dragging.
Drag in the process floating, gait of march should be controlled within 2 m/mins, and leave certain test and observation interval, floating dragging stopped to move ahead every 30 minutes, the stress situation and the arch bridge Deformation Member situation of each member of observation arch bridge, rectify a deviation, in the middle of floating dragging, shake the influence that produces altogether to eliminate arch bridge.
Utilize the optical fiber control technology by on-the-spot video camera, Fibre Optical Sensor and the total powerstation that is provided with, assembly unit arch rib, support dismounting, the firm twisted wire of stretch-draw, lifting main couple, the floating work progresss that drag etc. are all implemented effective monitorings, guarantee that different construction stage arch springing horizontal movements, vault vertical displacement, each measuring point stress etc. meet the requirements.
Floating dragging is the key of construction, for guaranteeing that arch bridge 8 does not produce common shake in slipping, buoyancy tank or hull 10 are in a flat state all the time with the arch bridge 8 on bank, along with arch bridge 8 moving in orbit, weight on buoyancy tank or the hull 10 increases gradually, the sliding velocity of this moment make on buoyancy tank or the hull 10 weight that increases gradually must with the balanced of buoyancy tank or hull 10 discharge waters, make the plane of buoyancy tank or hull 10 be in dynamic equilibrium state (being on the same horizon), utilize the method for discharge and injection buoyancy tank or hull 10 each water volume in water tank also can adjust the arch bridge 8 floating engineering direction perpendicularity deviations that drag, guarantee that arch bridge 8 does not topple, buoyancy tank or hull 10 balances are not run and are refuted, and this job practices has primacy at home.
The fixed form that changes the concrete structure shape of sending out buoyancy tank or hull, the configuration that changes pulling equipment and change arch rib and buoyancy tank can be formed a plurality of embodiment, is common variation of the present invention, does not describe in detail one by one at this.
Claims (7)
1. steelwork pipe arch bridge float-dragging construction method may further comprise the steps:
A. earlier the job site of one side is assembled into integral body then with the pipe arch bridge respective members section of being prefabricated into progressively on the assembling moulding bed on the riverbank, and the unloading back utilizes the dedicated track of laying that the arch bridge integral level is slid onto the river bank;
B, arch bridge pushing tow to bank is made the unsettled water surface that stretches in arch rib end, buoyancy tank or hull divide the compartment water filling and are located in the arch rib below, relevant jack is also slowly become flexible in draining then, arch rib one end is loaded and is fixed on the transport support of buoyancy tank or hull, and seal tight arch rib with wire rope, control buoyancy tank or hull divide the water yield in the compartment, constantly adjust floating towboat absolute altitude and levelness, make arch bridge be in the state of moving horizontally all the time;
C, the pulling equipment of corresponding specification respectively is set in the two sides, river, the haulage cable of two sides pulling equipment is connected respectively with near the buoyancy tank on this bank or a side of hull by assembly pulley;
The pulling equipment of d, unlatching two sides slowly drags buoyancy tank or hull, to guarantee floating stationarity and directionality of dragging;
E, pull in to shore after, buoyancy tank or hull divide that water filling slowly reduces absolute altitude in the compartment, make the arch rib bracket in place on the pedestal of bank, prop up pad and fixation at the arch springing place;
F, dismounting haulage cable, the two sections arch ribs splicings of two ends residue that should imbed cushion cap are in place;
G, build arch bridge two ends cushion cap, the fixing rib pin, processing finishes up.
2. steelwork pipe arch bridge float-dragging construction method according to claim 1, it is characterized in that: drag in the process floating, each seals the both sides of arch rib to earth anchor with 4 wire rope, does not topple over when dragging floating to guarantee arch rib, and along with continuous angle and the dynamics of adjusting lashing of moving of buoyancy tank or hull; After pulling in to shore, the arch rib both sides are tight with the cable wind rope envelope.
3. steelwork pipe arch bridge float-dragging construction method according to claim 1 is characterized in that: drags in the process floating, on buoyancy tank or hull, establishes three spacing wire rope, wherein, and two on opposite bank, one of this bank upstream side is to guarantee floating directionality of dragging.
4. steelwork pipe arch bridge float-dragging construction method according to claim 1, it is characterized in that: drag in the process floating, gait of march should be controlled within 2 m/mins, and leave certain test and observation interval, floating dragging stopped to move ahead every 30 minutes, the stress situation and the arch bridge Deformation Member situation of each member of observation arch bridge are rectified a deviation, and are total to the influence that shake produces to eliminate arch bridge in the middle of floating dragging.
5. steelwork pipe arch bridge float-dragging construction method according to claim 1 is characterized in that: the pulling equipment of two sides is respectively two hoist engines.
6. steelwork pipe arch bridge float-dragging construction method according to claim 1 is characterized in that: described arch rib is a trichord tubular type space tube truss structure.
7. according to the arbitrary described steelwork pipe arch bridge float-dragging construction method of claim 1～6, it is characterized in that: utilize the optical fiber control technology by on-the-spot video camera, Fibre Optical Sensor and the total powerstation that is provided with, assembly unit arch rib, support dismounting, the firm twisted wire of stretch-draw, lifting main couple, the floating work progresss that drag etc. are all implemented effective monitorings, guarantee that different construction stage arch springing horizontal movements, vault vertical displacement, each measuring point stress etc. meet the requirements.
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| CNA2007100551023A CN101117793A (en) | 2007-09-05 | 2007-09-05 | Steelwork pipe arch bridge float-dragging construction method |
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| CNA2007100551023A CN101117793A (en) | 2007-09-05 | 2007-09-05 | Steelwork pipe arch bridge float-dragging construction method |
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| CN101858059A (en) * | 2010-06-03 | 2010-10-13 | 上海市第一市政工程有限公司 | Construction method of erecting prestressed concrete beam on river |
| CN101935987A (en) * | 2010-08-27 | 2011-01-05 | 中交一公局桥隧工程有限公司 | Construction method for integrally sliding large-span steel pipe arch of curved bridge |
| CN102071652A (en) * | 2010-12-28 | 2011-05-25 | 武汉二航路桥特种工程有限责任公司 | Method and device for dragging large-tonnage object ashore |
| CN102071644A (en) * | 2010-12-31 | 2011-05-25 | 中铁港航工程局有限公司 | Lifting installation method of integral bridge arch rib |
| CN102367650A (en) * | 2011-08-05 | 2012-03-07 | 中铁一局集团厦门建设工程有限公司 | Construction method of steel pipe arch bridge |
| CN102561191A (en) * | 2011-12-13 | 2012-07-11 | 广东省公路勘察规划设计院股份有限公司 | Integral lifting system and construction method for arch bridge ribs |
| CN102109064B (en) * | 2009-12-25 | 2012-08-22 | 上海外高桥造船有限公司 | Pipeline calibration method |
| CN103437296A (en) * | 2013-08-28 | 2013-12-11 | 山东中宏路桥建设有限公司 | Steel tube arch bridge towerless buckling three-section type double-rib folding hoisting construction method |
| CN103498420A (en) * | 2013-10-18 | 2014-01-08 | 中交一公局厦门工程有限公司 | Large-scale steel box beam ashore construction method |
| CN103899838A (en) * | 2012-12-28 | 2014-07-02 | 中国石油天然气股份有限公司 | Method and device for controlling thaw settlement of pipes in permafrost regions by pontoon device |
| CN105603881A (en) * | 2016-02-24 | 2016-05-25 | 广东省交通规划设计研究院股份有限公司 | Integral erecting system for large sea-crossing arch bridge and construction method thereof |
| NO20141466A1 (en) * | 2014-12-04 | 2016-06-06 | Pontemar As | Pipe section for floating bridge |
| CN105740560A (en) * | 2016-02-03 | 2016-07-06 | 中铁一局集团有限公司 | Simulation assembling method used for continuous assembling construction of steel pipe arch rib segment bed jig method |
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| CN111546003A (en) * | 2020-05-11 | 2020-08-18 | 中铁六局集团有限公司 | Method for manufacturing arch rib of flexible arch bridge |
| CN113651249A (en) * | 2021-08-06 | 2021-11-16 | 中交路桥建设有限公司 | Method for hoisting sling area beam section of half-through basket arch bridge |
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| CN114908669A (en) * | 2022-03-03 | 2022-08-16 | 宁波市建设集团股份有限公司 | Method for mounting river-crossing steel truss bridge |
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| CN102109064B (en) * | 2009-12-25 | 2012-08-22 | 上海外高桥造船有限公司 | Pipeline calibration method |
| CN101858059A (en) * | 2010-06-03 | 2010-10-13 | 上海市第一市政工程有限公司 | Construction method of erecting prestressed concrete beam on river |
| CN101935987A (en) * | 2010-08-27 | 2011-01-05 | 中交一公局桥隧工程有限公司 | Construction method for integrally sliding large-span steel pipe arch of curved bridge |
| CN101935987B (en) * | 2010-08-27 | 2012-07-25 | 中交第一公路工程局有限公司 | Construction method for integrally sliding large-span steel pipe arch of curved bridge |
| CN102071652A (en) * | 2010-12-28 | 2011-05-25 | 武汉二航路桥特种工程有限责任公司 | Method and device for dragging large-tonnage object ashore |
| CN102071644A (en) * | 2010-12-31 | 2011-05-25 | 中铁港航工程局有限公司 | Lifting installation method of integral bridge arch rib |
| CN102071644B (en) * | 2010-12-31 | 2012-06-13 | 中铁港航工程局有限公司 | Lifting installation method of integral bridge arch rib |
| CN102367650A (en) * | 2011-08-05 | 2012-03-07 | 中铁一局集团厦门建设工程有限公司 | Construction method of steel pipe arch bridge |
| CN102561191A (en) * | 2011-12-13 | 2012-07-11 | 广东省公路勘察规划设计院股份有限公司 | Integral lifting system and construction method for arch bridge ribs |
| CN103899838A (en) * | 2012-12-28 | 2014-07-02 | 中国石油天然气股份有限公司 | Method and device for controlling thaw settlement of pipes in permafrost regions by pontoon device |
| CN103899838B (en) * | 2012-12-28 | 2016-01-20 | 中国石油天然气股份有限公司 | A kind of method and apparatus utilizing floating pontoon arrangement to prevent and treat Permafrost Area body thaw collapse |
| CN103437296B (en) * | 2013-08-28 | 2015-06-24 | 山东中宏路桥建设有限公司 | Steel tube arch bridge towerless buckling three-section type double-rib folding hoisting construction method |
| CN103437296A (en) * | 2013-08-28 | 2013-12-11 | 山东中宏路桥建设有限公司 | Steel tube arch bridge towerless buckling three-section type double-rib folding hoisting construction method |
| CN103498420A (en) * | 2013-10-18 | 2014-01-08 | 中交一公局厦门工程有限公司 | Large-scale steel box beam ashore construction method |
| NO20141466A1 (en) * | 2014-12-04 | 2016-06-06 | Pontemar As | Pipe section for floating bridge |
| CN105740560B (en) * | 2016-02-03 | 2018-12-11 | 中铁一局集团有限公司 | A kind of continuous assembling construction simulation assembling method of steel tube arch rib segment jig frame |
| CN105740560A (en) * | 2016-02-03 | 2016-07-06 | 中铁一局集团有限公司 | Simulation assembling method used for continuous assembling construction of steel pipe arch rib segment bed jig method |
| CN105603881A (en) * | 2016-02-24 | 2016-05-25 | 广东省交通规划设计研究院股份有限公司 | Integral erecting system for large sea-crossing arch bridge and construction method thereof |
| CN105908628A (en) * | 2016-04-22 | 2016-08-31 | 上海市机械施工集团有限公司 | Wholly roll-roll landing device for steel truss bridge and construction method of wholly roll-roll landing device |
| CN111350135A (en) * | 2020-02-21 | 2020-06-30 | 中铁十九局集团第三工程有限公司 | Large-span steel truss girder floating towing frame facility construction method |
| CN111350135B (en) * | 2020-02-21 | 2021-07-20 | 中铁十九局集团第三工程有限公司 | Large-span steel truss girder floating towing frame facility construction method |
| CN111546003A (en) * | 2020-05-11 | 2020-08-18 | 中铁六局集团有限公司 | Method for manufacturing arch rib of flexible arch bridge |
| CN113651249A (en) * | 2021-08-06 | 2021-11-16 | 中交路桥建设有限公司 | Method for hoisting sling area beam section of half-through basket arch bridge |
| CN113651249B (en) * | 2021-08-06 | 2024-05-28 | 中交路桥建设有限公司 | Method for hoisting girder sections in sling area of middle-bearing type basket arch bridge |
| CN114908669A (en) * | 2022-03-03 | 2022-08-16 | 宁波市建设集团股份有限公司 | Method for mounting river-crossing steel truss bridge |
| CN114889755A (en) * | 2022-05-11 | 2022-08-12 | 四川路桥桥梁工程有限责任公司 | Self-floating transportation device and method for steel pipe arch rib segments |
| CN114889755B (en) * | 2022-05-11 | 2023-09-29 | 四川路桥桥梁工程有限责任公司 | Self-floating conveying device and self-floating conveying method for steel pipe arch rib sections |
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