CN106245527A - A kind of dicyclic suspender and the erection method of Long span cat road track cable - Google Patents

A kind of dicyclic suspender and the erection method of Long span cat road track cable Download PDF

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Publication number
CN106245527A
CN106245527A CN201610644807.8A CN201610644807A CN106245527A CN 106245527 A CN106245527 A CN 106245527A CN 201610644807 A CN201610644807 A CN 201610644807A CN 106245527 A CN106245527 A CN 106245527A
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China
Prior art keywords
cat road
track cable
bridge tower
road track
rope
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CN201610644807.8A
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CN106245527B (en
Inventor
李鸿盛
任威
毛超军
宾熊
杨世好
屈加林
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CCCC comprehensive planning and Design Institute Co.,Ltd.
CCCC First Highway Engineering Co Ltd
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No 1 Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
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Publication of CN106245527A publication Critical patent/CN106245527A/en
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    • 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 present invention relates to the erection technique field, cat road of Longspan Bridge, especially relate to a kind of dicyclic suspender and the erection method of Long span cat road track cable.This suspender is surrounded into annular ring by steel wire rope, and gathers clamping by multiple wire clips, formed can clamp hauling rope little ring and can the macro ring that passes of Shi Mao road track cable;Anti-slip cramping apparatus realizes spacing to annular ring.During erection, use single line reciprocating-type tractor system, by the front end of cat road track cable under the pulling of hauling rope, drawn to the second bridge tower by the first bridge tower, and in distraction procedure, one described suspender is set at interval of 50m~500m, described cat road track cable is hung on described hauling rope, eventually arriving at the second bridge tower, front end enters anchor, removes suspension ring, adjusts linear, rear end and enter anchor, completes the erection of a Gen Mao road track cable.The smooth-going of whole distraction procedure is stable, linear accurately, adjustable is good.

Description

A kind of dicyclic suspender and the erection method of Long span cat road track cable
Technical field
The present invention relates to the erection technique field, cat road of Longspan Bridge, especially relate to a kind of dicyclic suspender and greatly across The erection method of Jing Mao road track cable.
Background technology
When cat road is Excitations for Long Span Suspension bridge construction, it is erected under main push-towing rope, is parallel to the linear temporary construction sidewalk of main push-towing rope. It is the height scaffolding that workmen carries out construction operation, is that the construction of main push-towing rope system or even the whole superstructure of suspension bridge is put down Platform.Workmen completes such as strand traction thereon, saddle, tight cable, cord clip and hoist cable are installed, box beam lifts to adjust stock, shaping to enter And building site connects, main push-towing rope twines the vital task such as silk, protective coating.
Cat road system is typically made up of track cable, surface layer, railing and handrail, horizontal overline bridge, global anti-wind system etc..Track cable is Main bearing member for cat road structure, it is common that use the steel wire rope of twisting to make is general by cat road shaping rear load-bearing rope Centrage arrange less than main cable erection centrage about 1.5m, during to facilitate main cable erection, workmen's is easy to operate, also The operation using special machine (such as: cable compacting machine, winding machine and wire etc.) when can meet the traction of strand, the banding of main push-towing rope and application is empty Between requirement.
Cat road system is as main push-towing rope traction erection, the adjustment of strand line style, the installation of tight cable, installing Cable-clamp, hoist cable, anticorrosive coating Construction and the important job platform of steel box-girder lifting construction, its design and construction are faced greatly facility relative to other and are more had special meaning Justice, requires tightened up than main structure construction sometimes.
The erection method that cat road track cable is conventional has the method that directly pulls, Bracket method, a suspension ring method etc., but directly pull method cannot Ensureing navigational clearance, the equipment of Bracket method is complex, and the pull strength of needs is relatively big, and the erection operation of existing suspension ring method is also Relatively complicated.
Summary of the invention
The first object of the present invention is to provide a kind of dicyclic suspender, the lightest, and installs the most square with dismounting Just.
The second object of the present invention is to provide the erection method of a kind of Long span cat road track cable, it is possible to use bridge tower is certainly The cat road deadweight of the track cable balance track cable suspension ring rear end, Zhong Kuamao road, end bay cat road that height degree is sagging, Shi Mao road track cable is protected Hold certain sag and do not affect navigation.
The dicyclic suspender that the present invention provides, including: steel wire rope, multiple wire clips and anti-slip cramping apparatus;
Described steel wire rope surrounds into annular ring, and is gathered also two strands, the left and right of annular ring by multiple described wire clips Clamping, makes one end of annular ring form a little ring that can clamp hauling rope, and the other end forms one can Shi Mao road The macro ring that track cable passes;
Described anti-slip cramping apparatus is two, is used for being clamped to hauling rope, and is separately positioned on the little of annular ring The both sides of ring one end, it is achieved spacing to annular ring.
Optionally, described wire clips and described anti-slip cramping apparatus all include U-shaped metalwork, lock tube and clamp nut;
Arranging two through holes on described lock tube, the two arms of described U-shaped metalwork passes two through holes of described lock tube, by Described clamp nut is fixed.
This dicyclic hanger structure is simple, easy accessibility, it is possible to be firmly lifted on hauling rope by cat road track cable, and Can be formed with hauling rope and firmly be connected.
The erection method of the Long span cat road track cable that the present invention provides, comprises the following steps:
Measure and determine the span centre sag of hauling rope, determine span centre absolute altitude, and calculate cat road track cable and set up in traction Minimum point absolute altitude in journey;
With the hauling rope on described hauling rope, the front end of cat road track cable is pulled device be connected, and drawing at described hauling rope Under Dong, the front end of described cat road track cable is drawn to the second bridge tower by the first bridge tower;
In distraction procedure, one described dicyclic suspender is set at interval of 50m~500m, by described cat road track cable Hang on described hauling rope, and it is described to ensure that track cable minimum point height during traction sets up in described cat road is not less than Minimum point absolute altitude;
The front end of described cat road track cable is entered by the anchoring Liang Chu continuing after the second bridge tower to draw to the second bridge tower side Anchor;And at described dicyclic suspender through described second bridge tower, described dicyclic suspender is removed;
By the anchoring Liang Chu traction to the first bridge tower side of the rear end of described cat road track cable, adjust described cat road track cable The anchoring Liang Chu that the rear end of described cat road track cable imports after linear described first bridge tower side enters anchor.
Optionally, the erection method of described Long span cat road track cable also includes, at built bridge tower and anchoring beam The step of the hauling rope that upper installation two ends are connected with hoist engine respectively.
Optionally, the erection method of described Long span cat road track cable also includes, traction sets up remaining cat road track cable Step;And set up each described cat road load-bearing successively according to by the order carried out symmetrical inside the main push-towing rope axis of main push-towing rope axis lateral Rope.
Optionally, the erection method of described Long span cat road track cable also includes, in distraction procedure, and real-time monitored institute The linear state of Shu Mao road track cable and minimum point altitude information, and the step of the spacing of the dicyclic suspender described in adjustment;? On the premise of ensureing that track cable minimum point height during traction sets up in described cat road is not less than described minimum point absolute altitude, to the greatest extent Amount reduces hauling speed.
Optionally, described hauling speed is 12m/min~20m/min.
Optionally, when adjusting described cat road track cable, first adjust the anchoring of described second bridge tower and described second bridge tower side Cat road track cable between beam is linear, then it is linear to adjust the cat road track cable between described second bridge tower and described first bridge tower, Finally adjust the cat road track cable between the anchoring beam of described first bridge tower and described first bridge tower side linear.
Optionally, described cat road track cable presets labelling point, and turn cable saddle at described labelling point and the second bridge tower During datum mark alignment, by clamping plate by described cat road track cable and described second bridge tower to turn cable saddle locked.
Optionally, when the cat road track cable adjusted between described second bridge tower and described first bridge tower is linear, institute is kept State linear higher than described cat road track cable of hauling rope linear.
The invention have the benefit that
The present invention uses single line reciprocating-type tractor system, and traction tonnage is more than 28 tons;Construction utilize dicyclic suspender prop up Cheng Mao road track cable, with the track cable sagging curve length after suspension ring less than tower height as principle, such Shi Mao road track cable by Gradually to cross river in place for tractive.The smooth-going of whole distraction procedure is stable, linear accurately, adjustable is good.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Front view when Fig. 1 uses for the dicyclic suspender that the embodiment of the present invention provides;
Side view when Fig. 2 uses for the dicyclic suspender that the embodiment of the present invention provides;
Fig. 3 is the front view of wire clips;
Fig. 4 is the side view of wire clips;
The schematic diagram of the Long span cat road track cable that Fig. 5 provides for the embodiment of the present invention state one when setting up;
The schematic diagram of the Long span cat road track cable that Fig. 6 provides for the embodiment of the present invention state two when setting up;
The schematic diagram of the Long span cat road track cable that Fig. 7 provides for the embodiment of the present invention state three when setting up;
The schematic diagram of the Long span cat road track cable that Fig. 8 provides for the embodiment of the present invention state four when setting up;
The schematic diagram of the Long span cat road track cable that Fig. 9 provides for the embodiment of the present invention state five when setting up;
Reference:
1-hauling rope;2-cat road track cable;
3-dicyclic suspender;301-steel wire rope;
302-wire clips;3021-U shape metalwork;
3022-lock tube;3023-clamp nut;
303-anti-slip cramping apparatus;401-the first bridge tower;
402-the second bridge tower;501-the first tower top hoist engine;
502-the second tower top hoist engine;601-first anchors beam;
602-second anchors beam;Hoist engine at the bottom of 701-the first tower;
Hoist engine at the bottom of 702-the second tower;8-puts rope frame.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ", Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ", " the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected;Can To be mechanical connection, it is also possible to be electrical connection;Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition Concrete meaning in invention.
Front view when Fig. 1 uses for the dicyclic suspender that the embodiment of the present invention provides;Fig. 2 provides for the embodiment of the present invention Dicyclic suspender use time side view.
This dicyclic suspender includes: steel wire rope 301, multiple wire clips 302 and anti-slip cramping apparatus 303;
Steel wire rope 301 surrounds into annular ring, and by multiple wire clips 302, two strands, the left and right of annular ring is gathered and clamped, The one end making annular ring forms a little ring that can clamp hauling rope 1, and the other end forms one and can wear by Shi Mao road track cable 2 The macro ring crossed;
Anti-slip cramping apparatus 303 is two, is used for being clamped to hauling rope 1, and is separately positioned on the little ring one of annular ring The both sides of end, it is achieved spacing to annular ring.
In the preferred version of the present embodiment, a diameter of 28mm of steel wire rope 301, the little ring obtained and the center of big interannular Away from about 1.0m.
Wire clips 302 is similar with the structure of anti-slip cramping apparatus 303, illustrates as a example by wire clips 302.
Fig. 3 is the front view of wire clips;Fig. 4 is the side view of wire clips.
As shown in Figure 3 and Figure 4, wire clips 302 includes U-shaped metalwork 3021, lock tube 3022 and clamp nut 3023;
Arranging two through holes on lock tube 3022, the two arms of U-shaped metalwork 3021 passes two through holes of lock tube 3022, by Clamp nut 3023 is fixed, thus realizes the locked effect of clamping to steel wire rope 301.
This dicyclic hanger structure is simple, easy accessibility, it is possible to be firmly lifted on hauling rope 1 by cat road track cable 2, And can be formed with hauling rope 1 and be firmly connected.
The embodiment of the present invention provides the erection method of a kind of Long span cat road track cable, comprises the following steps:
(1) measure and determine the span centre sag of hauling rope, determine span centre absolute altitude, and calculate cat road track cable and set up in traction During minimum point absolute altitude;
(2) with the hauling rope on described hauling rope, the front end of cat road track cable is pulled device to be connected, and at described hauling rope Pulling under, the front end of described cat road track cable is drawn to the second bridge tower by the first bridge tower;
(3) in distraction procedure, one described dicyclic suspender is set at interval of 50m~500m, described cat road is held Weight rope hangs on described hauling rope, and ensures that track cable minimum point height during traction sets up in described cat road is not less than Described minimum point absolute altitude;
(4) front end of described cat road track cable continues after passing through the second bridge tower to draw the anchoring Liang Chu to the second bridge tower side Enter anchor;And at described dicyclic suspender through described second bridge tower, described dicyclic suspender is removed;
(5) by anchoring Liang Chu from the rear end of described cat road track cable to the first bridge tower side traction, adjust described cat road load-bearing Rope linear after the rear end of described cat road track cable imported the anchoring Liang Chu of described first bridge tower side enter anchor.
Below in conjunction with the erection to using this dicyclic suspender to carry out Long span cat road track cable of the specific embodiment Illustrate.
Now be intended to build from north of the Changjiang River Wanzhou prefecture of Chongqing to the river-spanning bridge of south of the River Lichuan County, Hubei, through Actual measurement, bridge across In a length of 1050m, and determine span centre absolute altitude about 308.0m, open the navigation or air flight clear height about 195.0m.
First build the first bridge tower 401 and the first anchoring beam 601 in the north of the Changjiang River, and install 10t's at the tower top of the first bridge tower 401 First tower top hoist engine 501, arranges hoist engine 701 at the bottom of first tower of 25t under the tower of the first bridge tower 401.The is built in the south of the River Two bridge towers 402 and the second anchoring beams 602, and install the second tower top hoist engine 502 of 10t at the tower top of the second bridge tower 402, the Hoist engine 702 at the bottom of second tower of 25t is set under the tower of two bridge towers 402.
Use the mode of ferry boat haul, one end of hauling rope 1 is caused from the north of the Changjiang River south of the River, and is installed in the first bridge tower 401 and second tower top of bridge tower 402.
Cat road track cable 2 uses the freedom of the air of additional suspension ring to pull method and sets up by root, north orientation south draw.For making first Bridge tower 401 and the second bridge tower 402 bear less uneven external force, and cat road track cable 2 should be symmetrical according to left and right width, by main push-towing rope axle Inside the main push-towing rope axis of line lateral, the symmetrical order carried out sets up successively.The erection initial stage, it is ensured that door frame top, ground deflecting roller and lead Accurate to wheel installation site, trailer system runs smooth and easy.
When setting up the first Gen Mao road track cable 2, first the cheese of cat road track cable 2 is placed on the first bridge tower 401 base Put on rope frame 8 across side, with tower crane, cat road track cable 2 fag end is carried to the first bridge tower 401 tower top, and pull device with hauling rope Be connected (on tower top work platforms, roller is installed in relevant position), starts trailer system, puts the back tension that rope frame 8 provides certain, Cat road track cable 2 is drawn by the second bridge tower 402 of the first bridge tower 401 bank to the south of north bank.
In distraction procedure, in order to reduce the stress of hauling rope 1, and keep navigational clearance height, by the first bridge tower 401 Tower top often involves the cat road track cable 2 of about 350m, hangs on hauling rope 1 by cat road track cable 2 dicyclic suspender 3, such as Fig. 5 ~shown in 7.
Cat road track cable 2 is during traction sets up, it is to be noted that
Cat road track cable 2 is when traction, and the counter-force of dicyclic rigging 3 Jian Mao road track cable 2 is by the first bridge tower 401 height cat Road track cable deadweight provides;
For guaranteeing navigational clearance safety, during track cable 2 traction in cat road sets up, minimum point absolute altitude should control at 195.00m Above, now hauling rope 1 rope span centre absolute altitude is about 270.00m;
Set up commanding and should observe data according to survey crew, feed back to hoist engine operator in time, adjust hoist engine Folding and unfolding rope speed, on the premise of ensureing navigational clearance, makes hoist engine carry out setting up work with less pull strength.
After the fag end of cat road track cable 2 arrives the tower top of the second bridge tower 402, on the tower top hauling rope 1 of the first bridge tower 401 Installing a dicyclic suspender 3 again, hoist engine 702 at the bottom of second tower of 25t continues the fag end of traction cat road track cable 2 to south bank Second anchoring Liang602Chu enters anchor;Period, when dicyclic suspender 3 arrives the tower top of the second bridge tower 402, removed, such as Fig. 8 institute Show.
Hauling speed controls at about 16m/min, and the traction that remains a constant speed, when the rope dish of cat road track cable 2 remains 3~5 During circle steel cable, temporarily cease traction, cat road track cable 2 is all released from rope dish;To arrange on the tower top of the first bridge tower 401 The first tower top hoist engine 501 of 10t walk four line coasters and be connected with the rear fag end of cat road track cable 2.
After Nan Anmao road track cable 2 fag end enters anchor, by south span centre across the north across coarse adjustment cat road track cable by cross Linear, step is:
The rear fag end of cat road track cable 2 is anchored beam to first by the first tower top hoist engine 501 on the first bridge tower 401 door frame Returning at 601 and lead, simultaneously the first tower top hoist engine 501 and tackle pulley mate-assist of the second tower top hoist engine 502, coarse adjustment cat road holds The sag of weight rope 2;
Second bridge tower 402 Chu Mao road track cable 2 labelling point aligns with the cable saddle datum mark that turns of the second bridge tower 402, and uses Clamping plate are locked.The now span centre of cat road track cable 2 progressively lifting, the span centre absolute altitude about 307.00m of Zhong Kuamao road track cable 2, as Shown in Fig. 9.Meanwhile, the first tower top hoist engine 501 and the second tower top hoist engine 502 fine motion rope closing, hauling rope 1 span centre absolute altitude The lifting with track cable 2 lifting of cat road, and keep hauling rope 1 a little higher than cat road track cable 2 linear;
The rear fag end of last first tower top hoist engine 501 reverse drawing cat road track cable 2, imports in the first anchoring beam 601.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit;To the greatest extent The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered Row equivalent;And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. a dicyclic suspender, it is characterised in that including: steel wire rope, multiple wire clips and anti-slip cramping apparatus;
Described steel wire rope surrounds into annular ring, and by multiple described wire clips, two strands, the left and right of annular ring is gathered and pressed from both sides Tightly, making one end of annular ring form a little ring that can clamp hauling rope, the other end forms one and can hold in Shi Mao road The macro ring that weight rope passes;
Described anti-slip cramping apparatus is two, is used for being clamped to hauling rope, and is separately positioned on the little ring one of annular ring The both sides of end, it is achieved spacing to annular ring.
Dicyclic suspender the most according to claim 1, it is characterised in that described wire clips and described anti-slip cramping apparatus all include U Shape metalwork, lock tube and clamp nut;
Arranging two through holes on described lock tube, the two arms of described U-shaped metalwork is through two through holes of described lock tube, by described Clamp nut is fixed.
3. the erection method of a Long span cat road track cable, it is characterised in that comprise the following steps:
Measure and determine the span centre sag of hauling rope, determine span centre absolute altitude, and calculate cat road track cable during traction sets up Minimum point absolute altitude;
With the hauling rope on described hauling rope, the front end of cat road track cable is pulled device be connected, and pulling at described hauling rope Under, the front end of described cat road track cable is drawn to the second bridge tower by the first bridge tower;
In distraction procedure, the dicyclic suspender described in one claim 1 or 2 is set at interval of 50m~500m, by described cat Road track cable hangs on described hauling rope, and ensures described cat road track cable minimum point height during traction sets up not Less than described minimum point absolute altitude;
The front end of described cat road track cable enters anchor by the anchoring Liang Chu continuing after the second bridge tower to draw to the second bridge tower side;And At described dicyclic suspender through described second bridge tower, described dicyclic suspender is removed;
By the anchoring Liang Chu traction to the first bridge tower side of the rear end of described cat road track cable, adjust the linear of described cat road track cable After the rear end of described cat road track cable imported the anchoring Liang Chu of described first bridge tower side enter anchor.
The erection method of Long span cat road the most according to claim 3 track cable, it is characterised in that also include, built The step of the hauling rope that two ends are connected with hoist engine respectively is installed on the bridge tower become and anchoring beam.
The erection method of Long span cat road the most according to claim 3 track cable, it is characterised in that also include, traction frame If the step of remaining cat road track cable;And according to by the order frame successively carried out symmetrical inside the main push-towing rope axis of main push-towing rope axis lateral If each described cat road track cable.
The erection method of Long span cat road the most according to claim 3 track cable, it is characterised in that also include, in traction During, the linear state of cat road track cable described in real-time monitored and minimum point altitude information, and adjust described in dicyclic hang The step of the spacing of tool;Ensureing that track cable minimum point height during traction sets up in described cat road is not less than described minimum On the premise of some absolute altitude, reduce hauling speed as far as possible.
7. according to the erection method of the Long span cat road track cable described in claim 3 or 6, it is characterised in that described traction speed Degree is 12m/min~20m/min.
The erection method of Long span cat road the most according to claim 3 track cable, it is characterised in that adjust described cat road and hold During weight rope, first adjust the cat road track cable between the anchoring beam of described second bridge tower and described second bridge tower side linear, then adjust Cat road track cable between described second bridge tower and described first bridge tower is linear, finally adjusts described first bridge tower and described first Cat road track cable between the anchoring beam of bridge tower side is linear.
The erection method of Long span cat road the most according to claim 8 track cable, it is characterised in that in described cat road load-bearing Preset labelling point on rope, and described labelling point and the second bridge tower turn cable saddle datum mark align time, by clamping plate by described cat Road track cable and described second bridge tower to turn cable saddle locked.
The erection method of Long span cat road the most according to claim 9 track cable, it is characterised in that adjusting described the When cat road track cable between two bridge towers and described first bridge tower is linear, the linear of described hauling rope is kept to hold higher than described cat road Weigh the linear of rope.
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CN108100888B (en) * 2017-12-14 2020-03-10 中交一公局海威工程建设有限公司 Main cable rapid erection and installation method
CN110306433A (en) * 2019-04-29 2019-10-08 中铁大桥局集团有限公司 A kind of turbulent flow waters guide cable is quick to cross river method
CN111441594A (en) * 2020-04-21 2020-07-24 中铁大桥局第七工程有限公司 Construction method of multilayer sectional type main cable
CN111441594B (en) * 2020-04-21 2021-10-26 中铁大桥局第七工程有限公司 Construction method of multilayer sectional type main cable

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