CN104278637A - No-catwalk cableway erecting method for main cable strands of suspension bridge - Google Patents

No-catwalk cableway erecting method for main cable strands of suspension bridge Download PDF

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Publication number
CN104278637A
CN104278637A CN201410492091.5A CN201410492091A CN104278637A CN 104278637 A CN104278637 A CN 104278637A CN 201410492091 A CN201410492091 A CN 201410492091A CN 104278637 A CN104278637 A CN 104278637A
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CN
China
Prior art keywords
cable
main
strand
tower
load
Prior art date
Application number
CN201410492091.5A
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Chinese (zh)
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CN104278637B (en
Inventor
王同民
李艳哲
任文辉
代永涛
刘校峰
杨瑞
张跃平
刘亮楼
Original Assignee
中铁大桥局集团第一工程有限公司
中铁大桥局集团有限公司
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Priority to CN201410492091.5A priority Critical patent/CN104278637B/en
Publication of CN104278637A publication Critical patent/CN104278637A/en
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Publication of CN104278637B publication Critical patent/CN104278637B/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 invention discloses a no-catwalk cableway erecting method for main cable strands of a suspension bridge and relates to the technical field of mounting and construction of main cables of the suspension bridge. The no-catwalk cableway erecting method includes steps of erecting a bearing traction cable hung with a plurality of cable holders and connected with a traction device; mounting a linear stable cable and a linear counter-drawing device on segments of the bearing traction cable and keeping a linear form of the bearing traction cable above a preset position above a hollow cable linear form of the main cable; stretching the main cable strands in a cable stretching area by a cable stretching plate, and fixing the ends of the stretched main cable strands in a holder at the lower end of the pre-mounted first cable holder; driving the main cable strands along the longitudinal motion of the bridge by the bearing traction cable under the action of the traction device, stretching the main cable strands continuously and stopping until all the main cable strands are completely stretched and longitudinally move the main cable strands to the pre-mounted position; mounting the tower top sections of the main cable strands into saddles, and dragging the main cable strands at the beam ends into anchorage by the cable head traction device.

Description

A kind of main rope of suspension bridge strand is without the cableway erection method in cat road
Technical field
The present invention relates to main rope of suspension bridge installation Technology field, is specifically the cableway erection method of a kind of main rope of suspension bridge strand without cat road.
Background technology
At present, the method that self-anchored suspension bridge Strand Erection adopts first installs cat road, cat road is established end slipway, track cable and trailer system are installed, then by strand along vertical bridge to, drawn to another bank by a bank, strand in longitudinal traction process, by the carrying roller multi-point support on cat road, and repeatedly will pass cable saddle on cat road.
Following problems may be encountered in construction for this construction method: strand easily produces torsion when rope dish is released; Whole strand needs to use dependence cat road, slideway, track cable and longitudinal traction system to set up; Be all that work high above the ground on cat road completes in strand distraction procedure, exhibition rope condition is poor; The stressed complexity of strand in distraction procedure, in longitudinal traction process, main cable strand is through repeatedly repeatedly bending, and zinc coat damage is serious; Strand takies end slipway, and install length consuming time, work efficiency is low; In strand distraction procedure, strand easily reverses, and on cat road, working space is narrow and small, and security risk is large; Strand will remove cat road after will installing cat road, main push-towing rope installation before installing, time-consuming and cost is high.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of main rope of suspension bridge strand without the cableway erection method in cat road, present invention saves cat road to install and the dismounting time, and reduce the input that cat road and main cable strand draw the temporary structure such as slideway, trailer system, improve safety; There is not steel wire generation when repeatedly crossing tower top along main cable strand during cat road longitudinal traction and repeatedly bend problem, avoid the damage that the anticorrosion plating bed of material of steel wire and steel wire itself are bent repeatedly to greatest extent, ensure that the quality of main cable strand.
For reaching above object, the technical scheme that the present invention takes is: a kind of main rope of suspension bridge strand is without the cableway erection method in cat road, comprise the following steps: step S1. sets up a load-bearing drag cable between abutment pier Dun Ding and the tower top of adjacent king-tower, between the tower top of each adjacent king-tower, this load-bearing drag cable is hung with multiple clip, and load-bearing drag cable is connected with the draw-gear being arranged on bridge beam end; The sections of step S2. at load-bearing drag cable between abutment pier Dun Ding and the tower top of adjacent king-tower, between the tower top of each adjacent king-tower installs linear steadying line and linear drag unit, remains on predeterminated position above main push-towing rope empty cable shape by linear for load-bearing drag cable; Step S3. arranges Zhan Suoqu respectively at two abutment pier places, carries out exhibition rope, be fixed in the clamper of first default clip lower end by the main cable strand termination after launching in Zhan Suoqu by exhibition rope dish to main cable strand; Step S4. load-bearing drag cable drives main cable strand along bridge lengthwise movement under draw-gear effect, continue to carry out exhibition rope to main cable strand simultaneously, and the main cable strand of expansion is connected and fixed with the clamper of the postorder clip lower end of described first clip successively, until main cable strand all launches, and stop when longitudinally moving to default installation site; The tower top section of main cable strand is entered saddle by step S5., and is drawn the main cable strand of beam-ends into anchor by rope head draw-gear.
On the basis of technique scheme, in step S1, between described load-bearing drag cable is erected at abutment pier Dun Ding and adjacent king-tower tower top by support, between the tower top of each adjacent king-tower, described support is provided with assembly pulley.
On the basis of technique scheme, if cable saddle is positioned at tower top, then described support installing is at tower top; If cable saddle is positioned at tower, then support by installation of embedded parts at saddle room top board.
On the basis of technique scheme, in step S1, described load-bearing drag cable to wear around mode be single reciprocating or ring-type is circulating.
On the basis of technique scheme, in step S1, described draw-gear is hoist engine.
On the basis of technique scheme, in step S2, after treating that the erection of described load-bearing drag cable is complete, hanging basket track cable is installed, and by described hanging basket track cable, with hanging basket, operating personnel is delivered to preset height below load-bearing drag cable, linear drag unit is installed.
On the basis of technique scheme, in step S2, described linear drag unit comprises back-pressure beam and organizes pull-back cable more, described back-pressure beam is arranged on above load-bearing drag cable, often organize the both sides that pull-back cable is symmetrically distributed in back-pressure beam, and the upper end of pull-back cable is connected with back-pressure beam or linear steadying line; If self-anchored suspension bridge, then the lower end of pull-back cable is connected with the stiff girder of bridge; If earth anchored suspension bridge, then between each king-tower to drawing horizontal wire rope, the lower end of pull-back cable is connected with this horizontal wire rope.
On the basis of technique scheme, in step S3, the clamper of described clip comprises rectangle clamper and regular hexagon clamper, and need to adopt rectangle clamper into saddle place at main cable strand, remainder adopts regular hexagon clamper.
On the basis of technique scheme, in step S5, described rope head draw-gear is any one in hoist engine tackle pulley, jack and steel hinge line, Chain block three.
On the basis of technique scheme, carrying out tight cable shaping to the main cable strand of installation, when twining a thread anticorrosive work, increase tight cable machine, twine a land lengths for machine operating platform, and utilize tower crane tight cable machine to be directly installed on this operating platform, to twine a machine; After installation, tight cable machine, twine a machine by the load-bearing of load-bearing drag cable, traveling work on the main cable strand of installation.
Beneficial effect of the present invention is:
1, the present invention is without the need to installing cat road and main cable strand draws slideway, saves cat road and installs and the dismounting time, and reduces the input that cat road and main cable strand draw the temporary structure such as slideway, trailer system, improves safety.
2, main cable strand of the present invention is by the clip brought into motion be arranged on load-bearing drag cable, whole main cable strand does not need the slideway that forms at multiple carrying roller tows, there is not steel wire generation when repeatedly crossing tower top along main cable strand during cat road longitudinal traction and repeatedly bend problem, avoid the damage that the anticorrosion plating bed of material of steel wire and steel wire itself are bent repeatedly to greatest extent, ensure that the quality of main cable strand.
3, tight cable shaping of the present invention, twine an anticorrosive work tight cable machine with twine a machine and carry on working platform and carry out, make security protection face more concentrated, increase work efficiency.
4, the present invention is not only applicable to self-anchored suspension bridge, earth anchored suspension bridge, and be applicable to cable saddle and be positioned at the operating mode that tower top or cable saddle are positioned at tower, main cable strand can be passed in tower by above cable saddle or side, achieve and first pour all Sarasota tower bodies, carry out the construction sequence of main cable strand erection again, therefore applicability of the present invention is higher.
Accompanying drawing explanation
Fig. 1 is the view of embodiment of the present invention centre suspension cord bridge main cable strand without the cableway erection method in cat road;
Fig. 2 is the method schematic diagram of load-bearing drag cable circulation traction in the embodiment of the present invention;
Fig. 3 be in the embodiment of the present invention clip by the schematic diagram of support;
Fig. 4 is that in the embodiment of the present invention, clip is the structural representation of rectangle clamper;
Fig. 5 is that in the embodiment of the present invention, clip is the structural representation of regular hexagon clamper.
Reference numeral:
1-main cable strand; 11-opens up rope dish;
2-load-bearing drag cable; 21-clip; 22-clamper;
The linear steadying line of 3-; 4-hanging basket track cable; 41-hanging basket;
The linear drag unit of 5-; 51-back-pressure beam; 52-pull-back cable;
6-main push-towing rope empty cable shape; 7-support; 71-assembly pulley; 8-draw-gear.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Shown in Figure 1, a kind of main rope of suspension bridge strand, without the cableway erection method in cat road, comprises the following steps:
Step S1. sets up a load-bearing drag cable 2 by support 7 between abutment pier Dun Ding and the tower top of adjacent king-tower, between the tower top of each adjacent king-tower, shown in Figure 3, and described support 7 is provided with assembly pulley 71; Load-bearing drag cable 2 is supported by assembly pulley 71, and load-bearing drag cable 2 can be vertically moved between support 7.If cable saddle is positioned at tower top, then described support 7 is arranged on tower top; If cable saddle is positioned at tower, then support 7 by installation of embedded parts at saddle room top board.Described cable saddle is an indispensable component of suspension bridge, and adopt cast member, bottom is connected with the pre-buried base of king-tower, and there is notch at top for supporting main push-towing rope.Described saddle room refers to the position at cable saddle place, the enclosure space formed by king-tower wall or the special steel housing made.Shown in Figure 2, described load-bearing drag cable 2 wear around mode to be single reciprocating or ring-type is circulating, multiple difference can be suitable for and to wear around mode.This load-bearing drag cable 2 is hung with multiple clip 21, and load-bearing drag cable 2 is connected with the draw-gear 8 being arranged on bridge beam end, load-bearing drag cable 2 can be moved along the bridge; Preferably, described draw-gear 8 is hoist engine, and hoist engine is provided with balancing weight, utilizes the Action of Gravity Field of balancing weight, is strained by load-bearing drag cable 2, makes it be in straight state all the time.
The sections of step S2. at load-bearing drag cable 2 between abutment pier Dun Ding and the tower top of adjacent king-tower, between the tower top of each adjacent king-tower installs linear steadying line 3 and linear drag unit 5, remains on predeterminated position above main push-towing rope empty cable shape 6 by linear for load-bearing drag cable 2; Wherein, treat described load-bearing drag cable 2 set up complete after, hanging basket track cable 4 is installed, and by described hanging basket track cable 4, with hanging basket 41, operating personnel is delivered to preset height below load-bearing drag cable 2, linear drag unit 5 is installed.Described linear drag unit 5 comprises back-pressure beam 51 and many group pull-back cables 52, described back-pressure beam 51 is arranged on above load-bearing drag cable 2, often organize the both sides that pull-back cable 52 is symmetrically distributed in back-pressure beam 51, and the upper end of pull-back cable 52 is connected with back-pressure beam 51 or linear steadying line 3; If self-anchored suspension bridge, then the lower end of pull-back cable 52 is connected with the stiff girder of bridge; If earth anchored suspension bridge, then between each king-tower to drawing horizontal wire rope, the lower end of pull-back cable 52 is connected with this horizontal wire rope.
Step S3. is shown in Figure 2, arranges Zhan Suoqu respectively at two abutment pier places, in Zhan Suoqu, carry out exhibition rope by exhibition rope dish 11 pairs of main cable strands 1, is fixed in the clamper 22 of first default clip 21 lower end by main cable strand 1 termination after launching; Shown in Figure 4 and 5, preferably, the clamper 22 of described clip 21 comprises rectangle clamper and regular hexagon clamper, and need to adopt rectangle clamper into saddle place at main cable strand 1, remainder adopts regular hexagon clamper.Due to main cable strand 1 manufacture time, the section of its length range is regular hexagon.But main cable strand 1 is when bridge location sets up, the notch that cable saddle end face is reserved is rectangle, therefore main cable strand 1 must be dismissed and rearrange orthogonal by its section, then putting into the saddle groove of cable saddle.And this method presses the gauge point of main cable strand 1 on ground, adopt rectangle clamper in advance, high-altitude can be avoided to rearrange main cable strand 1 section configuration, improve main cable strand 1 and set up efficiency, conveniently enter saddle.
Step S4. load-bearing drag cable 2 drives main cable strand 1 along bridge lengthwise movement under draw-gear 8 acts on, continue to carry out exhibition rope to main cable strand 1 simultaneously, and the main cable strand 1 of expansion is connected and fixed with the clamper 22 of postorder clip 21 lower end of first clip 21 successively, until main cable strand 1 all launches, and stop when longitudinally moving to default installation site.
The tower top section of main cable strand 1 is entered saddle by step S5., and is drawn into anchor by the main cable strand 1 of rope head draw-gear by beam-ends.Preferably, described rope head draw-gear is any one in hoist engine tackle pulley, jack and steel hinge line, Chain block three.Described enter saddle refer to main cable strand be organized into rectangle, put into the notch at cable saddle top.Described enter anchor refer to and with instrument rope head to be drawn and to enter the process of anchor ingot, specifically main cable strand termination drawn and send in the anchor ingot of stiff girder termination, using nut anchoring.
Carrying out tight cable shaping to the main cable strand 1 of installation, when twining a thread anticorrosive work, increase tight cable machine, twine a land lengths for machine operating platform, and utilize tower crane tight cable machine to be directly installed on this operating platform, to twine a machine; After installation, tight cable machine, twine a machine by load-bearing drag cable 2 load-bearing, traveling work on the main cable strand 1 of installation.Wherein, personnel are transported to operating platform by hanging basket track cable is vertical with hanging basket.
The present invention is not limited to above-mentioned embodiment, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.

Claims (10)

1. main rope of suspension bridge strand is without the cableway erection method in cat road, it is characterized in that: comprise the following steps:
Step S1. sets up a load-bearing drag cable (2) between abutment pier Dun Ding and the tower top of adjacent king-tower, between the tower top of each adjacent king-tower, this load-bearing drag cable (2) is hung with multiple clip (21), and load-bearing drag cable (2) is connected with the draw-gear (8) being arranged on bridge beam end;
The sections of step S2. at load-bearing drag cable (2) between abutment pier Dun Ding and the tower top of adjacent king-tower, between the tower top of each adjacent king-tower installs linear steadying line (3) and linear drag unit (5), remains on main push-towing rope empty cable shape (6) top predeterminated position by linear for load-bearing drag cable (2);
Step S3. arranges Zhan Suoqu respectively at two abutment pier places, in Zhan Suoqu, by Zhan Suopan (11), exhibition rope is carried out to main cable strand (1), main cable strand (1) termination after launching is fixed in the clamper (22) of first default clip (21) lower end;
Step S4. load-bearing drag cable (2) drives main cable strand (1) along bridge lengthwise movement under draw-gear (8) effect, continue to carry out exhibition rope to main cable strand (1) simultaneously, and the main cable strand (1) launched is connected and fixed with the clamper (22) of postorder clip (21) lower end of described first clip (21) successively, until main cable strand (1) all launches, and stop when longitudinally moving to default installation site;
The tower top section of main cable strand (1) is entered saddle by step S5., and is drawn the main cable strand (1) of beam-ends into anchor by rope head draw-gear.
2. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, it is characterized in that: in step S1, between described load-bearing drag cable (2) is erected at abutment pier Dun Ding and adjacent king-tower tower top by support (7), between the tower top of each adjacent king-tower, described support (7) is provided with assembly pulley (71).
3. main rope of suspension bridge strand as claimed in claim 2 is without the cableway erection method in cat road, and it is characterized in that: if cable saddle is positioned at tower top, then described support (7) is arranged on tower top; If cable saddle is positioned at tower, then support (7) by installation of embedded parts at saddle room top board.
4. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, it is characterized in that: in step S1, described load-bearing drag cable (2) to wear around mode be single reciprocating or ring-type is circulating.
5. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, and it is characterized in that: in step S1, described draw-gear (8) is hoist engine.
6. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, it is characterized in that: in step S2, treat described load-bearing drag cable (2) set up complete after, hanging basket track cable (4) is installed, and by described hanging basket track cable (4), with hanging basket (41), operating personnel is delivered to load-bearing drag cable (2) below preset height, linear drag unit (5) is installed.
7. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, it is characterized in that: in step S2, described linear drag unit (5) comprises back-pressure beam (51) and organizes pull-back cable (52) more, described back-pressure beam (51) is arranged on load-bearing drag cable (2) top, often organize the both sides that pull-back cable (52) is symmetrically distributed in back-pressure beam (51), and the upper end of pull-back cable (52) is connected with back-pressure beam (51) or linear steadying line (3);
If self-anchored suspension bridge, then the lower end of pull-back cable (52) is connected with the stiff girder of bridge; If earth anchored suspension bridge, then between each king-tower to drawing horizontal wire rope, the lower end of pull-back cable (52) is connected with this horizontal wire rope.
8. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, it is characterized in that: in step S3, the clamper (22) of described clip (21) comprises rectangle clamper and regular hexagon clamper, need to adopt rectangle clamper into saddle place at main cable strand (1), remainder adopts regular hexagon clamper.
9. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, it is characterized in that: in step S5, and described rope head draw-gear is any one in hoist engine tackle pulley, jack and steel hinge line, Chain block three.
10. main rope of suspension bridge strand as claimed in claim 1 is without the cableway erection method in cat road, it is characterized in that: carry out tight cable shaping at the main cable strand (1) to installation, when twining a thread anticorrosive work, increase tight cable machine, twine a land lengths for machine operating platform, and utilize tower crane tight cable machine to be directly installed on this operating platform, to twine a machine; After installation, tight cable machine, twine a machine by load-bearing drag cable (2) load-bearing, in the upper traveling work of the main cable strand (1) of installation.
CN201410492091.5A 2014-09-23 2014-09-23 A kind of main rope of suspension bridge strand is without the cableway erection method in cat road CN104278637B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060125A (en) * 2015-09-01 2015-11-18 中国长江三峡集团公司 High tower cable crane structure and detachment method thereof
CN105442450A (en) * 2015-11-21 2016-03-30 江苏法尔胜缆索有限公司 Manufacturing method and saddling method for preformed cable strand of main cable of suspension bridge
CN105672133A (en) * 2016-01-26 2016-06-15 中铁港航局集团有限公司 Construction method for erecting steel tube stiff bridge framework through asymmetric lifting
CN107201724A (en) * 2016-03-19 2017-09-26 湖北建科结构加固有限责任公司 A kind of suspension bridge is without cat pipeline construction method
CN110644370A (en) * 2019-09-30 2020-01-03 中铁大桥局第七工程有限公司 Cable hoisting system of space self-anchored suspension bridge and construction method thereof
CN111424549A (en) * 2020-03-30 2020-07-17 中国一冶集团有限公司 Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template

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CN202090286U (en) * 2011-01-30 2011-12-28 中交三航局第三工程有限公司 Traction system suitable for self-anchored type double cable plane suspension bridge
US20120216357A1 (en) * 2009-11-06 2012-08-30 Dong-A University Research Foundation For Industry-Academy Cooperation Constructing method of cable-stayed bridge and temporary cable therefor
CN103088750A (en) * 2013-01-24 2013-05-08 东南大学 Especial-big span suspension bridge of uniparted hyperboloid space rope net main cable and construction method thereof
CN103233427A (en) * 2013-04-27 2013-08-07 长沙理工大学 Sling tensioning and system conversion method for double-tower three-span plane main cable self-anchorage type suspension bridge

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JPH04231509A (en) * 1990-12-28 1992-08-20 Takenaka Komuten Co Ltd Laying method for cable
KR20070083452A (en) * 2007-01-08 2007-08-24 가와다 고교 가부시키가이샤 Cable stayed suspension bridge making combined use of one-box and two-box girders
US20120216357A1 (en) * 2009-11-06 2012-08-30 Dong-A University Research Foundation For Industry-Academy Cooperation Constructing method of cable-stayed bridge and temporary cable therefor
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060125A (en) * 2015-09-01 2015-11-18 中国长江三峡集团公司 High tower cable crane structure and detachment method thereof
CN105442450A (en) * 2015-11-21 2016-03-30 江苏法尔胜缆索有限公司 Manufacturing method and saddling method for preformed cable strand of main cable of suspension bridge
CN105672133A (en) * 2016-01-26 2016-06-15 中铁港航局集团有限公司 Construction method for erecting steel tube stiff bridge framework through asymmetric lifting
CN107201724A (en) * 2016-03-19 2017-09-26 湖北建科结构加固有限责任公司 A kind of suspension bridge is without cat pipeline construction method
CN110644370A (en) * 2019-09-30 2020-01-03 中铁大桥局第七工程有限公司 Cable hoisting system of space self-anchored suspension bridge and construction method thereof
CN111424549A (en) * 2020-03-30 2020-07-17 中国一冶集团有限公司 Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template

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