CN106245527B - A kind of erection method of dicyclic suspender and Long span cat road track cable - Google Patents

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

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Publication number
CN106245527B
CN106245527B CN201610644807.8A CN201610644807A CN106245527B CN 106245527 B CN106245527 B CN 106245527B CN 201610644807 A CN201610644807 A CN 201610644807A CN 106245527 B CN106245527 B CN 106245527B
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China
Prior art keywords
track cable
road track
cat
cat road
bridge tower
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CN106245527A (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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China Finance Bureau Highway Survey And Design Institute Co Ltd
CCCC First Highway Engineering Co Ltd
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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 cat road erection technique fields of Longspan Bridge, more particularly, to a kind of dicyclic suspender and the erection method of Long span cat road track cable.The suspender is surrounded by annular ring by wirerope, and gathers clampings by multiple ropes card, formation can clamp the small ring of hauling rope with being capable of the big ring that passes through of the road Shi Mao track cable;Anti-slip cramping apparatus realizes the limit to annular ring.When erection, using single line reciprocating-type tractor system, by the front end of cat road track cable under the pulling of hauling rope, it is drawn from the first bridge tower to the second bridge tower, and in distraction procedure, one suspender is set at interval of 50m~500m, cat road track cable is hung on the hauling rope, eventually arrive at the second bridge tower, front end enter anchor, remove hanging ring, the linear, rear end of adjustment enters anchor, complete the erection of the road a Gen Mao track cable.Entire distraction procedure is smoothly stablized, and linear accurate, adjustability is good.

Description

A kind of erection method of dicyclic suspender and Long span cat road track cable
Technical field
The present invention relates to the cat road erection technique fields of Longspan Bridge, more particularly, to a kind of dicyclic suspender and greatly across The erection method of the road Jing Mao track cable.
Background technique
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 construction personnel carries out construction operation, is that the construction of main push-towing rope system or even the entire superstructure of suspension bridge is flat Platform.Construction personnel completes such as strand traction on it, stock, shaping is adjusted to enter saddle, tight cable, cord clip and hoist cable installation, box beam lifting And the vital tasks such as building site connection, main push-towing rope wrapping, protective coating.
Cat road system is generally made of track cable, surface layer, railing and handrail, lateral overline bridge, global anti-wind system etc..Track cable is It for the main bearing member of cat road structure, is usually made of the wirerope of twisting, generally shapes rear load-bearing rope by cat road Center line be lower than main cable erection center line 1.5m left and right settings, construction personnel's is easy to operate when facilitating main cable erection, also It can satisfy empty using the operation of special machine (such as: cable compacting machine, winding machine and wire) when the traction of strand, the banding of main push-towing rope and coating Between require.
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 The important job platform of construction and steel box-girder lifting construction, design and construction face facility more greatly relative to other and have special meaning Justice is required than main structure construction tightened up sometimes.
The cat road common erection method of track cable has the method that directly pulls, Bracket method, hanging ring method etc., but directly pulling method can not Guarantee navigational clearance, the equipment of Bracket method is complex, and the tractive force needed is larger, and the erection process of existing hanging ring method It is relatively complicated.
Summary of the invention
The first object of the present invention is to provide a kind of dicyclic suspender, simple light, and installs and remove more just Just.
The second object of the present invention is to provide a kind of erection method of Long span cat road track cable, can use bridge tower from The cat road self weight of the sagging end bay cat road track cable balance road the Zhong Kuamao track cable hanging ring rear end of height degree, the road Shi Mao track cable are protected Holding certain sag does not influence to open the navigation or air flight.
Dicyclic suspender provided by the invention, comprising: wirerope, multiple ropes card and anti-slip cramping apparatus;
The wirerope is surrounded by annular ring, and is gathered two strands of the left and right of annular ring simultaneously by multiple rope cards It clamps, so that one end of annular ring is formed the small ring that can clamp hauling rope, the other end forms one being capable of the road Shi Mao The big ring that track cable passes through;
The anti-slip cramping apparatus is two, for being clamped to hauling rope, and is separately positioned on the small of annular ring The limit to annular ring is realized in the two sides of ring one end.
Optionally, the rope card and the anti-slip cramping apparatus include U-shaped metalwork, lock tube and fastening nut;
Two through-holes are set on the lock tube, the two arms of the U-shaped metalwork passes through two through-holes of the lock tube, by The fastening nut is fixed.
The dicyclic hanger structure is simple, convenient for disassembly and assembly, and firmly cat road track cable can be lifted on hauling rope, and Firm connection can be formed with hauling rope.
The erection method of Long span cat provided by the invention road track cable, comprising the following steps:
The span centre sag for measuring and determining hauling rope, determines span centre absolute altitude, and calculates cat road track cable and set up in traction Minimum point absolute altitude in journey;
The front end of cat road track cable is pulled device with the hauling rope on the hauling rope to connect, and in the drawing of the hauling rope Under dynamic, the front end of cat road track cable is drawn from the first bridge tower to the second bridge tower;
In distraction procedure, at interval of dicyclic suspender described in 50m~500m setting one, by cat road track cable It hangs on the hauling rope, and guarantees minimum point height of cat road track cable during drawing erection not less than described Minimum point absolute altitude;
The front end of cat road track cable continues to draw to the anchoring Liang Chu of the second bridge tower side after passing through the second bridge tower Anchor;And when the dicyclic suspender passes through second bridge tower, the dicyclic suspender is removed;
The rear end of cat road track cable is drawn to the anchoring Liang Chu of the first bridge tower side, adjusts cat road track cable The anchoring Liang Chu that the rear end of cat road track cable imports first bridge tower side is entered into anchor after linear.
Optionally, the erection method of the Long span cat road track cable further includes in built bridge tower and anchoring beam The step of hauling rope that upper installation both ends are connect with hoist engine respectively.
Optionally, the erection method of the Long span cat road track cable further includes that traction sets up remaining cat road track cable The step of;And each cat road load-bearing is successively set up according to the sequence by symmetrically carrying out on the inside of main push-towing rope axis lateral outside main push-towing rope axis Rope.
Optionally, the erection method of the Long span cat road track cable further includes, in distraction procedure, real-time observation station The linear state and minimum point altitude information of the road Shu Mao track cable, and the step of adjusting the spacing of the dicyclic suspender;? Guarantee that the cat road track cable under the premise of the minimum point height during traction is set up is not less than the minimum point absolute altitude, is use up Amount reduces hauling speed.
Optionally, the hauling speed is 12m/min~20m/min.
Optionally, when adjusting the cat road track cable, the anchoring of second bridge tower Yu second bridge tower side is first adjusted Cat road track cable between beam is linear, then the cat road track cable adjusted between second bridge tower and first bridge tower is linear, The cat road track cable finally adjusted between first bridge tower and the anchoring beam of first bridge tower side is linear.
Optionally, the preset mark point on cat road track cable, and turn cable saddle in the mark point and the second bridge tower When benchmark point alignment, cat road track cable and the cable saddle that turns of second bridge tower are locked by clamping plate.
Optionally, when the cat road track cable between adjustment second bridge tower and first bridge tower is linear, institute is kept State the linear linear higher than cat road track cable of hauling rope.
The invention has the benefit that
The present invention uses single line reciprocating-type tractor system, and traction tonnage is greater than 28 tons;Dicyclic suspender branch is utilized in construction The road Cheng Mao track cable, using the of length no more than tower height of track cable sagging curve after hanging ring as principle, such road Shi Mao track cable by It is in place gradually to pull river.Entire distraction procedure is smoothly stablized, and linear accurate, adjustability is good.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is main view when dicyclic suspender provided in an embodiment of the present invention uses;
Fig. 2 is side view when dicyclic suspender provided in an embodiment of the present invention uses;
Fig. 3 is the main view of rope card;
Fig. 4 is the side view of rope card;
Fig. 5 is the schematic diagram of state one of the Long span cat provided in an embodiment of the present invention road track cable when setting up;
Fig. 6 is the schematic diagram of state two of the Long span cat provided in an embodiment of the present invention road track cable when setting up;
Fig. 7 is the schematic diagram of state three of the Long span cat provided in an embodiment of the present invention road track cable when setting up;
Fig. 8 is the schematic diagram of state four of the Long span cat provided in an embodiment of the present invention road track cable when setting up;
Fig. 9 is the schematic diagram of state five of the Long span cat provided in an embodiment of the present invention road track cable when setting up;
Appended drawing reference:
1- hauling rope;2- cat road track cable;
3- dicyclic suspender;301- wirerope;
302- rope card;3021-U shape metalwork;
3022- lock tube;3023- fastening nut;
303- anti-slip cramping apparatus;The first bridge tower of 401-;
The second bridge tower of 402-;501- the first tower top hoist engine;
502- the second tower top hoist engine;601- first anchors beam;
602- second anchors beam;701- the first tower bottom hoist engine;
702- the second tower bottom hoist engine;8- puts rope frame.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can To be mechanical connection, it is also possible to be electrically connected;It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.
Fig. 1 is main view when dicyclic suspender provided in an embodiment of the present invention uses;Fig. 2 provides for the embodiment of the present invention Dicyclic suspender use when side view.
The dicyclic suspender includes: wirerope 301, multiple ropes card 302 and anti-slip cramping apparatus 303;
Wirerope 301 is surrounded by annular ring, and two strands of the left and right of annular ring is gathered and clamped by multiple ropes card 302, So that one end of annular ring is formed the small ring that can clamp hauling rope 1, the other end formed one can the road Shi Mao track cable 2 wear The big ring crossed;
Anti-slip cramping apparatus 303 is two, for being clamped to hauling rope 1, and is separately positioned on the small ring one of annular ring The limit to annular ring is realized in the two sides at end.
In the preferred embodiment of the present embodiment, the diameter of wirerope 301 is 28mm, the center of obtained small ring and big interannular Away from 1.0m or so.
Rope card 302 is similar with the structure of anti-slip cramping apparatus 303, is illustrated by taking rope card 302 as an example.
Fig. 3 is the main view of rope card;Fig. 4 is the side view of rope card.
As shown in Figure 3 and Figure 4, rope card 302 includes U-shaped metalwork 3021, lock tube 3022 and fastening nut 3023;
Two through-holes are set on lock tube 3022, the two arms of U-shaped metalwork 3021 passes through two through-holes of lock tube 3022, by Fastening nut 3023 is fixed, to realize that the clamping to wirerope 301 locks effect.
The dicyclic hanger structure is simple, convenient for disassembly and assembly, and firmly cat road track cable 2 can be lifted on hauling rope 1, And firm connection can be formed with hauling rope 1.
The embodiment of the present invention provides a kind of erection method of Long span cat road track cable, comprising the following steps:
(1) the span centre sag for measuring and determining hauling rope, determines span centre absolute altitude, and calculates cat road track cable and set up in traction Minimum point absolute altitude in the process;
(2) front end of cat road track cable is pulled device with the hauling rope on the hauling rope to connect, and in the hauling rope Pulling under, the front end of cat road track cable is drawn from the first bridge tower to the second bridge tower;
(3) in distraction procedure, at interval of dicyclic suspender described in 50m~500m setting one, the cat road is held Weight rope is hung on the hauling rope, and guarantees that minimum point height of cat road track cable during drawing erection is not less than The minimum point absolute altitude;
(4) front end of cat road track cable after the second bridge tower by continuing to draw to the anchoring Liang Chu of the second bridge tower side Enter anchor;And when the dicyclic suspender passes through second bridge tower, the dicyclic suspender is removed;
(5) rear end of cat road track cable is drawn to the anchoring Liang Chu of the first bridge tower side, adjusts cat road load-bearing Rope it is linear after the anchoring Liang Chu that the rear end of cat road track cable imports first bridge tower side entered into anchor.
Erection below with reference to a specific embodiment to using the dicyclic suspender to carry out Long span cat road track cable It is illustrated.
Now be intended to build the river-spanning bridge from north of the Changjiang River Wanzhou prefecture of Chongqing to Jiangnan Lichuan County, Hubei, by Actual measurement, bridge across Middle length is 1050m, and determines span centre absolute altitude about 308.0m, and open the navigation or air flight clear height about 195.0m.
First in north of the Changjiang River construction the first bridge tower 401 and the first anchoring beam 601, and the tower top of the first bridge tower 401 installation 10t's The first tower bottom hoist engine 701 of 25t is arranged in first tower top hoist engine 501 under the tower of the first bridge tower 401.The construction the in Jiangnan Two bridge towers 402 and the second anchoring beam 602, and in the second tower top hoist engine 502 of the tower top of the second bridge tower 402 installation 10t, the The second tower bottom hoist engine 702 of 25t is set under the tower of two bridge towers 402.
By the way of ferry boat haul, one end of hauling rope 1 is led into Jiangnan from the north of the Changjiang River, and be installed in the first bridge tower 401 and second bridge tower 402 tower top.
Cat road track cable 2 pulls method using the freedom of the air of additional hanging ring and sets up by root, is drawn by north orientation south.To make first Bridge tower 401 and the second bridge tower 402 bear lesser uneven external force, cat road track cable 2 should it is symmetrical according to left and right width, by main push-towing rope axis The sequence symmetrically carried out on the inside of lateral main push-towing rope axis outside line is successively set up.Erection initial stage, it is ensured that door frame top, ground deflecting roller and lead Accurate to wheel installation site, trailer system operation is smooth.
When setting up the first road Gen Mao track cable 2, the cheese of cat road track cable 2 is placed on 401 bottom edge of the first bridge tower first Track cable 2 rope end in cat road is mentioned to 401 tower top of the first bridge tower with tower crane, and pulls device with hauling rope by putting on rope frame 8 across side Be connected (idler wheel is installed in corresponding position on tower top workbench), starts trailer system, puts rope frame 8 and provide certain back tension, Cat road track cable 2 is drawn by the second bridge tower 402 of the bank to the south of the first bridge tower 401 of northern bank.
In distraction procedure, in order to reduce the stress of hauling rope 1, and navigational clearance height is kept, by the first bridge tower 401 Tower top often involves the cat road track cable 2 of about 350m, cat road track cable 2 is hung on hauling rope 1 with dicyclic suspender 3, such as Fig. 5 Shown in~7.
Cat road track cable 2 is during drawing erection, it is to be noted that
For cat road track cable 2 in traction, the counter-force of 3 road Jian Mao track cable 2 of dicyclic rigging is by 401 height cat of the first bridge tower Track cable self weight in road provides;
To ensure that minimum point absolute altitude should be controlled in 195.00m during navigational clearance safety, the traction of cat road track cable 2 are set up More than, 1 rope span centre absolute altitude of hauling rope is 270.00m or so at this time;
Data should be observed according to survey crew by setting up commanding, timely feedbacked and given hoist engine operator, adjust hoist engine Folding and unfolding rope speed makes hoist engine carry out erection work with lesser tractive force under the premise of guaranteeing navigational clearance.
After the rope end of cat road track cable 2 reaches the tower top of the second bridge tower 402, on the tower top hauling rope 1 of the first bridge tower 401 One dicyclic suspender 3 is installed again, the second tower bottom hoist engine 702 of 25t continues to draw the rope end of cat road track cable 2 to southern bank Second anchoring Liang602Chu enters anchor;Period is removed, when dicyclic suspender 3 reaches the tower top of the second bridge tower 402 such as Fig. 8 institute Show.
Hauling speed is controlled in 16m/min or so, and the traction that remains a constant speed, when the rope disk residue 3~5 of cat road track cable 2 When enclosing steel cable, traction is temporarily ceased, cat road track cable 2 is all released from rope disk;It will be arranged on the tower top of first bridge tower 401 The first tower top hoist engine 501 of 10t walk four line coasters and connect with the rear rope end of cat road track cable 2.
After track cable 2 rope end in the road Nan Anmao enters anchor, by south across-in across-the north across coarse adjustment cat road track cable by cross It is linear, step are as follows:
The rear rope end of cat road track cable 2 is anchored beam to first by the first tower top hoist engine 501 on 401 door frame of the first bridge tower It returns and leads at 601, while the tackle pulley mate-assist of the first tower top hoist engine 501 and the second tower top hoist engine 502, coarse adjustment cat road are held The sag of weight rope 2;
Second bridge tower, 402 road Chu Mao track cable, 2 mark point turns cable saddle benchmark point alignment with the second bridge tower 402, is used in combination Clamping plate is locked.The span centre of cat road track cable 2 is gradually lifted at this time, the span centre absolute altitude about 307.00m of the road Zhong Kuamao track cable 2, such as Shown in Fig. 9.At the same time, 502 fine motion rope closing of the first tower top hoist engine 501 and the second tower top hoist engine, 1 span centre absolute altitude of hauling rope It is lifted and is lifted with cat road track cable 2, and keep 1 a little higher than cat road track cable 2 of hauling rope linear;
The rear rope end of last first tower top hoist engine, 501 reverse drawing cat road track cable 2 imports in the first anchoring beam 601.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (10)

1. a kind of dicyclic suspender characterized by comprising wirerope, multiple ropes card and anti-slip cramping apparatus;
The wirerope is surrounded by annular ring, and two strands of the left and right of annular ring is gathered and pressed from both sides by multiple rope cards Tightly, one end of annular ring is made to form the small ring that can clamp hauling rope, the other end formed one can the road Shi Mao hold The big ring that weight rope passes through;
The anti-slip cramping apparatus is two, for being clamped to hauling rope, and is separately positioned on the small ring one of annular ring The limit to annular ring is realized in the two sides at end.
2. dicyclic suspender according to claim 1, which is characterized in that the rope blocks and the anti-slip cramping apparatus includes U Shape metalwork, lock tube and fastening nut;
Two through-holes are set on the lock tube, and the two arms of the U-shaped metalwork passes through two through-holes of the lock tube, by described Fastening nut is fixed.
3. a kind of erection method of Long span cat road track cable, which comprises the following steps:
The span centre sag for measuring and determining hauling rope, determines span centre absolute altitude, and calculates cat road track cable during drawing erection Minimum point absolute altitude;
The front end of cat road track cable is pulled device with the hauling rope on the hauling rope to connect, and in the pulling of the hauling rope Under, the front end of cat road track cable is drawn from the first bridge tower to the second bridge tower;
In distraction procedure, one dicyclic suspender of any of claims 1 or 2 is set at interval of 50m~500m, by the cat Road track cable is hung on the hauling rope, and guarantees minimum point height of cat road track cable during drawing erection not Lower than the minimum point absolute altitude;
The front end of cat road track cable enters anchor by continuing to draw to the anchoring Liang Chu of the second bridge tower side after the second bridge tower;And When the dicyclic suspender passes through second bridge tower, the dicyclic suspender is removed;
The rear end of cat road track cable is drawn to the anchoring Liang Chu of the first bridge tower side, adjusts the linear of cat road track cable The anchoring Liang Chu that the rear end of cat road track cable imports first bridge tower side is entered into anchor afterwards.
4. the erection method of Long span cat according to claim 3 road track cable, which is characterized in that further include, built At bridge tower and anchoring beam on installation both ends connect respectively with hoist engine hauling rope the step of.
5. the erection method of Long span cat according to claim 3 road track cable, which is characterized in that further include hitch frame If the step of remaining cat road track cable;And according to the successively frame of the sequence by symmetrically being carried out on the inside of main push-towing rope axis lateral outside main push-towing rope axis If each cat road track cable.
6. the erection method of Long span cat according to claim 3 road track cable, which is characterized in that further include drawing In the process, the linear state and minimum point altitude information of cat road track cable are observed in real time, and are adjusted the dicyclic and hung The step of spacing of tool;Minimum point height during erection is being drawn not less than described minimum in guarantee cat road track cable Under the premise of point absolute altitude, hauling speed is reduced as far as possible.
7. the erection method of Long span cat road track cable according to claim 3 or 6, which is characterized in that the traction speed Degree is 12m/min~20m/min.
8. the erection method of Long span cat according to claim 3 road track cable, which is characterized in that adjust the cat road and hold When weight rope, the cat road track cable first adjusted between second bridge tower and the anchoring beam of second bridge tower side is linear, then adjusts Cat road track cable between second bridge tower and first bridge tower is linear, finally adjusts first bridge tower and described first Cat road track cable between the anchoring beam of bridge tower side is linear.
9. the erection method of Long span cat according to claim 8 road track cable, which is characterized in that in cat road load-bearing Preset mark point on rope, and in the mark point and when turning cable saddle benchmark point alignment of the second bridge tower, by clamping plate by the cat The cable saddle that turns of road track cable and second bridge tower locks.
10. the erection method of Long span cat according to claim 9 road track cable, which is characterized in that adjusting described the When cat road track cable between two bridge towers and first bridge tower is linear, the linear of the hauling rope is kept to hold higher than the cat road Rope is linear again.
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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
CN110306433B (en) * 2019-04-29 2021-03-02 中铁大桥局集团有限公司 Method for rapidly passing river through guide cable in turbulent water area
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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