CN105442458A - Method for hanging and installing stay cable of cable-stayed bridge special-shaped tower pillar - Google Patents
Method for hanging and installing stay cable of cable-stayed bridge special-shaped tower pillar Download PDFInfo
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- CN105442458A CN105442458A CN201610061845.0A CN201610061845A CN105442458A CN 105442458 A CN105442458 A CN 105442458A CN 201610061845 A CN201610061845 A CN 201610061845A CN 105442458 A CN105442458 A CN 105442458A
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- cable
- haulage cable
- rack winch
- suspension
- tower
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a method for hanging and installing a stay cable of a cable-stayed bridge special-shaped tower pillar in a special construction environment. According to the method, a main load cable is taken as the stress body, and the main load cable is driven by power winches and load cables arranged on the beam surfaces of the two sides of a main tower to move in the obliquely vertical direction on the two sides of the tower pillar; when the distance between an anchor cup at the front end of the body of the stay cable in the air and the tower pillar is too small, the distance can be adjusted by means of the traction power winch and the load cable located on the same side as the stay cable. The hoisting system is small in occupied height, oblique hoisting can be achieved, the problems of conventional tower canes and tower top lifting frames that occupied height is large and only vertical hoisting can be achieved are effectively solved, and stay cable hoisting safety is guaranteed when the tower pillar is in a special shape.
Description
Technical field
The invention belongs to bridge building operations technical field, the suspension cable especially relating to cable stayed bridge abnormity king-post under a kind of special construction environment hangs mounting method.
Background technology
In large span stayed-cable bridge stayed Cable Construction process, because suspension cable deadweight is larger, the other tower crane of tower can not meet the lifting requirements of suspension cable, now, at tower top, tower top suspension bracket can be set to carry out suspension cable lifting operation, and (as near airports, have the requirement of flight landing course line limit for height) when Cable stayed Bridge Main Tower tower location is positioned at special region, the other tower crane of conventional tower and tower top suspension bracket, because of the restriction of oneself height, are all unsuitable for on-the-spot suspension cable lifting operation; Simultaneously, along with the fast development of bridge technology particularly technology for cable-stayed bridges, the form of structure of Cable stayed Bridge Main Tower is more and more novel, such as sail shape king-post, the length of the cableway pipe causing suspension cable supporting is more and more longer, because suspension cable level lifting distance has big difference, the other tower crane of the tower of large gauge certainly will be selected when identical lifting weight or hang greatly the tower top suspension bracket of distance, above-mentioned 2 diseconomies and insecurity brought and oblique tensile tower end lifting work cannot be completed.Therefore, need to study the suspension cable of special-shaped king-post under a kind of special construction environment and hang mounting method.
Summary of the invention
In view of this, a kind of suspension cable of special construction environment lower king-post strut abnormity is the object of the present invention is to provide to hang Method for Installation, this method avoid the defect of existing constructure scheme, not only complete the construction difficult problem that existing constructure scheme cannot complete, and improve the security reliability of construction.
For achieving the above object, the present invention is by the following technical solutions: a kind of suspension cable of cable stayed bridge abnormity king-post hangs mounting method, the equipment that the method adopts comprise tower top bracket, main haulage cable, two rack winches, two haulage cables, two tackle pulley, two pull device and two corner blocks, the method comprises the steps:
The first step, preparation: install tower top bracket at king-tower top, the girder of king-tower both sides is installed the first rack winch and the second rack winch, main haulage cable is placed on the rotary pulley at tower top bracket two ends, main haulage cable two ends connect the first tackle pulley and the second tackle pulley respectively, wherein the first tackle pulley connects the first haulage cable, second tackle pulley connects the second haulage cable, first tackle pulley connects the first rack winch by the first corner block, and the second tackle pulley connects the second rack winch by the second corner block; First pulls device and second pulls device and lays respectively on the main haulage cable on king-tower both sides.
Second step, the crank arm suspension cable mounting method of side of king-tower is: the second rack winch loosens the second haulage cable, first rack winch tightens up haulage cable simultaneously, drives on main haulage cable first to pull directly over device to suspension cable front end to be installed, beam face anchor cup.
3rd step, first rack winch and the second rack winch loosen the first haulage cable and the second haulage cable simultaneously, on main haulage cable first is pulled device and transfer suspension cable front end place to beam face, pull device by first and be connected with the suspension centre that suspension cable front end is arranged; .
4th step, second rack winch tightens up the second haulage cable, first rack winch loosens the first haulage cable in good time simultaneously, the first suspension cable front end pulled under device is driven on main haulage cable to be promoted in the air, when aerial suspension cable soon touch king-post crank arm time, second rack winch stops tightening up the second haulage cable, first rack winch tightens up the first haulage cable, to drive on main haulage cable first to pull suspension cable front end under device after the mobile 2 ~ 3m in outside of cranking arm, the first rack winch stops tightening up the first haulage cable.Repeat above-mentioned action, until the first suspension cable front end anchor cup pulled under device on main haulage cable is promoted to cableway pipe place corresponding to outside of cranking arm by the first rack winch cooperation traction second rack winch.
5th step, suspension cable front end anchor cup is pulled out anchor plate along cableway pipe and anchor cup nut is screwed in design attitude on anchor cup, oblique tensile tower end is installed and is terminated.
6th step, the suspension cable mounting method of the straight king-post side of king-tower is: the first rack winch loosens the first haulage cable, second rack winch tightens up the second haulage cable simultaneously, drives on main haulage cable second to pull device and waits to hang directly over the anchor cup of suspension cable front end to beam face;
7th step, first rack winch and the second rack winch loosen the first haulage cable and the second rack winch simultaneously, on main haulage cable second is pulled device to transfer to suspension cable front end, beam face place, pull device by second and be connected with the suspension centre that suspension cable front end is arranged.
8th step, first rack winch tightens up the first haulage cable, second rack winch loosens the second haulage cable in good time simultaneously, the second suspension cable front end pulled under device is driven on main haulage cable to be promoted in the air, until the second suspension cable front end anchor cup pulled under device on main haulage cable to be promoted to cableway pipe place corresponding outside king-tower.
9th step, suspension cable front end anchor cup is pulled out anchor plate along cableway pipe and anchor cup nut is screwed in design attitude on anchor cup, oblique tensile tower end is installed and is terminated.
Further, the supporting leg position of described tower top bracket and the reserved keyhole on stayed bridge pylon cable top with bolts.
Further, the first haulage cable is connected with main haulage cable with the movable pulley in the second tackle pulley, fixed pulley by the first tackle pulley with the second haulage cable.
The beneficial effect that the present invention produces is: in order to solve a suspension cable lifting difficult problem for special construction environment lower king-post strut abnormity, the main haulage cable of employing of the invention is as stressed main body, main haulage cable is positioned on the angle pulley at tower top bracket two ends, the load of bearing is delivered in king-post main body by tower top bracket, simultaneously pull device respectively arranging one apart from the two ends certain distance of main haulage cable, for promoting the suspension centre on the oblique pulling cable body of king-tower both sides, the two ends of main haulage cable are connected with two groups of haulage cables and two traction power hoist engines respectively by assembly pulley.Main haulage cable is driven to carry out oblique vertical motion in king-post both sides by rack winch that king-tower two curb girder face is arranged and haulage cable, when aerial oblique pulling cable body front end anchor cup is apart from king-post hypotelorism, available being positioned at hangs rack winch that suspension cable homonymy arranges and haulage cable regulates this distance.
This cover Lift-on/Lift-off System takies highly little, can carry out oblique lifting, effectively solve conventional tower crane, tower top suspension bracket takies highly large, only can carry out the problem of vertical lifting, ensure that the construction safety of suspension cable lifting in king-post abnormity situation.
Other advantage of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is that the suspension cable of cable stayed bridge abnormity king-post in the present invention hangs operating diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, the equipment that the inventive method uses comprises tower top bracket 7, first rack winch 1, second rack winch 12, main haulage cable 6, first pulls device 5, second and pulls device 8, first haulage cable 3, first corner block 2, first tackle pulley 4, second haulage cable 10, second corner block 11 and the second tackle pulley 9.
Before suspension cable enters the lifting operation stage, on king-tower 13 top, tower top bracket 7 is installed, the beam face of girder 16 is installed the first rack winch 1 and the second rack winch 12, two rack winches are arranged on king-tower 13 both sides respectively.Main haulage cable 6 is connected to the two ends of main haulage cable 6 through tower top bracket 7, first tackle pulley 4 and the second tackle pulley 9 respectively by movable pulley and fixed pulley.One end of first haulage cable 3 is connected with the first tackle pulley 4, and the other end is connected with the first rack winch 1 by the first corner block 2.One end of second haulage cable 10 connects the second tackle pulley 9, and the other end connects the second rack winch 12 by the second corner block 11.First pulls device 5 and second pulls device 8 and is arranged on respectively on two haulage cables.Pulling the relative position of device on main haulage cable 6 by adjusting two, meeting the lifting requirements of full-bridge suspension cable.
After preparation completes, suspension cable is arranged on king-tower to crank arm side, method is as follows: the rack winch 1,12 of king-tower 13 both sides cooperatively interacts, drive on main haulage cable 6 first to pull device 5 to anchor cup place, suspension cable front end to be installed, girder 16 beam face by the haulage cable 3,10 connected respectively, pull device 5 by first and be connected with the suspension centre that suspension cable 15 cable body front end is arranged.Second rack winch 12 tightens up the second haulage cable 10, first rack winch 1 loosens the first haulage cable 3 in good time simultaneously, suspension cable 15 front end pulled by main haulage cable 6 first under device 5 is promoted in the air, when aerial suspension cable 15 cable body soon touch king-post crank arm 14 time, second rack winch 12 stops tightening up the second haulage cable 10, first rack winch 1 starts to tighten up the first haulage cable 3, drives on main haulage cable 6 first to pull suspension cable 15 front end under device 5 to the mobile 2 ~ 3m outside 14 that cranks arm.
Repeat above-mentioned action, to crank arm cableway pipe place corresponding outside 14 until the first rack winch 1 coordinates the second rack winch 12 suspension cable 15 front end anchor cup pulled by first on main haulage cable 6 under device 5 to be promoted to.In tower, suspension cable front end anchor cup is pulled out anchor plate along cableway pipe and anchor cup nut is screwed in design attitude on anchor cup by operating personnel, and oblique tensile tower end is installed and terminated.
Suspension cable is located at the mounting method of the straight king-post side of king-tower: the rack winch 1,12 of king-tower both sides cooperatively interacts, drive on main haulage cable 6 second to pull device 8 to anchor cup place, suspension cable front end to be installed, beam face by haulage cable 3,10, pull device 8 by second and be connected with the suspension centre that suspension cable 15 cable body front end is arranged.First rack winch 1 tightens up the first haulage cable 3, second rack winch 12 loosens the first haulage cable 10 in good time simultaneously, suspension cable 15 front end pulled by main haulage cable 6 second under device 8 is promoted in the air, until the suspension cable front end anchor cup main haulage cable pulled under device 8 to be promoted to cableway pipe place corresponding to outside of cranking arm.In tower, suspension cable front end anchor cup is pulled out anchor plate along cableway pipe and anchor cup nut is screwed in design attitude on anchor cup by operating personnel, and oblique tensile tower end is installed and terminated.
The distinguishing feature that in the present embodiment, the special-shaped suspension cable of special construction environment lower king-post strut hangs Method for Installation is, the tower top bracket whole height being located at king-post top is little, main stressed carrier is main haulage cable, drawn by the cooperation of king-tower both sides rack winch, can adjust flexibly to be fixed on main haulage cable and pull device at the relative position of height in the air and between king-tower post, efficiently solve construction limit for height and require the construction difficult problem that lower king-post strut abnormity suspension cable hangs, guarantee the construction safety in suspension cable hoisting process.
Be noted that, above-described embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, other amendment that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (3)
1. the suspension cable of a cable stayed bridge abnormity king-post hangs mounting method, the equipment that the method adopts comprise tower top bracket (7), main haulage cable (6), two rack winches (1,12), two haulage cables (3,10), two tackle pulley (4,9), two pull device (5,8) and two corner blocks (2,11), it is characterized in that, the method comprises the steps:
The first step, at king-tower (13) top, tower top bracket (7) is installed, upper installation first rack winch (1) of girder (16) of king-tower both sides and the second rack winch (12), main haulage cable (6) is placed on the rotary pulley at tower top bracket (7) two ends, main haulage cable (6) two ends connect the first tackle pulley (4) and the second tackle pulley (9) respectively, wherein the first tackle pulley (4) connects the first haulage cable (3), second tackle pulley (9) connects the second haulage cable (10), first tackle pulley 4 connects the first rack winch (1) by the first corner block 2, second tackle pulley (9) connects the second rack winch (12) by the second corner block (11), first pulls device (5) and second pulls device (8) and lays respectively on the main haulage cable (6) on king-tower both sides,
Second step, second rack winch (12) loosens the second haulage cable (10), first rack winch (1) tightens up haulage cable (3) simultaneously, drives on main haulage cable (6) first to pull directly over device (5) to suspension cable front end to be installed, beam face anchor cup;
3rd step, first rack winch (1) and the second rack winch (12) loosen the first haulage cable (3) and the second haulage cable (10) simultaneously, on main haulage cable (6) first is pulled device (5) and transfer suspension cable (15) front end place to beam face, pull device (5) by first and be connected with the suspension centre that suspension cable (15) front end is arranged;
4th step, second rack winch (12) tightens up the second haulage cable (10), first rack winch (1) loosens the first haulage cable (3) in good time simultaneously, the suspension cable front end driving main haulage cable (6) upper first to pull under device (5) is promoted in the air, when aerial suspension cable (15) soon touch king-post crank arm (14) time, second rack winch (12) stops tightening up the second haulage cable (10), first rack winch (1) tightens up the first haulage cable (3), main haulage cable (6) upper first is driven to pull suspension cable front end under device (5) after the mobile 2 ~ 3m in (14) outside that cranks arm, first rack winch (1) stops tightening up the first haulage cable (3), repeat above-mentioned action, until the first rack winch (1) coordinates traction second rack winch (12), by upper for main haulage cable (6) first, the suspension cable front end anchor cup pulled under device (5) is promoted to cableway pipe place corresponding to outside of cranking arm,
5th step, suspension cable front end anchor cup is pulled out anchor plate along cableway pipe and anchor cup nut is screwed in design attitude on anchor cup, oblique tensile tower end is installed and is terminated;
6th step, first rack winch (1) loosens the first haulage cable (3), second rack winch (12) tightens up the second haulage cable (10) simultaneously, drives on main haulage cable (6) second to pull device (8) and waits to hang directly over the anchor cup of suspension cable front end to beam face;
7th step, first rack winch (1) and the second rack winch (12) loosen the first haulage cable (3) and the second rack winch (10) simultaneously, on main haulage cable (6) second is pulled device (8) to transfer to suspension cable front end, beam face place, pull device (8) by second and be connected with the suspension centre that suspension cable front end is arranged;
8th step, first rack winch (1) tightens up the first haulage cable (3), second rack winch (12) loosens the second haulage cable (10) in good time simultaneously, the suspension cable front end driving main haulage cable (6) upper second to pull under device (8) is promoted in the air, until the suspension cable front end anchor cup pulled under device (8) is promoted to cableway pipe place corresponding outside king-tower by upper for main haulage cable (6) second;
9th step, suspension cable front end anchor cup is pulled out anchor plate along cableway pipe and anchor cup nut is screwed in design attitude on anchor cup, oblique tensile tower end is installed and is terminated.
2. the suspension cable of a kind of cable stayed bridge abnormity king-post according to claim 1 hangs mounting method, it is characterized in that: the supporting leg position of described tower top bracket (7) and the reserved keyhole on stayed bridge pylon cable top with bolts.
3. the suspension cable of a kind of cable stayed bridge abnormity king-post according to claim 1 hangs mounting method, it is characterized in that: the first haulage cable (3) is connected with main haulage cable (6) with the movable pulley in the second tackle pulley (9), fixed pulley by the first tackle pulley (4) with the second haulage cable (10).
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| CN106812216A (en) * | 2017-03-20 | 2017-06-09 | 金环建设集团有限公司 | A kind of mast Cable forces system integral installation method |
| CN108149928A (en) * | 2017-12-21 | 2018-06-12 | 中交路桥华南工程有限公司 | The tower end installation method of suspension cable |
| CN108385524A (en) * | 2018-01-29 | 2018-08-10 | 中交第二航务工程局有限公司 | The method of revolution steel strand wires bivector traction in the same direction |
| CN108385525A (en) * | 2018-01-29 | 2018-08-10 | 中交二航局第四工程有限公司 | The method that revolution steel strand wires are unidirectionally drawn in the same direction |
| CN108385506A (en) * | 2018-05-09 | 2018-08-10 | 广东省交通规划设计研究院股份有限公司 | Sarasota and Cable-stayed Bridge with Slanted Pylon |
| CN109024231A (en) * | 2018-07-17 | 2018-12-18 | 中铁大桥勘测设计院集团有限公司 | A kind of curve tower abnormity Cable-Stayed Bridge Structure |
| CN109853393A (en) * | 2019-03-19 | 2019-06-07 | 湖南联智智能科技有限公司 | A kind of the hanging cable construction system and its construction method of king-tower vertical transfer cable-stayed bridge |
| CN109898422A (en) * | 2019-03-11 | 2019-06-18 | 中建三局第一建设工程有限责任公司 | Rope method for rapidly mounting between a kind of abnormal shape steel bridge tower tower |
| CN113123240A (en) * | 2021-04-12 | 2021-07-16 | 中国建筑第八工程局有限公司 | Installation device for stay cable of special-shaped leaning tower and construction method thereof |
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| CN108385525A (en) * | 2018-01-29 | 2018-08-10 | 中交二航局第四工程有限公司 | The method that revolution steel strand wires are unidirectionally drawn in the same direction |
| CN108385524A (en) * | 2018-01-29 | 2018-08-10 | 中交第二航务工程局有限公司 | The method of revolution steel strand wires bivector traction in the same direction |
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| CN108385506A (en) * | 2018-05-09 | 2018-08-10 | 广东省交通规划设计研究院股份有限公司 | Sarasota and Cable-stayed Bridge with Slanted Pylon |
| CN108385506B (en) * | 2018-05-09 | 2022-11-04 | 广东省交通规划设计研究院集团股份有限公司 | Cable-stayed bridge of cable tower and inclined tower |
| CN109024231A (en) * | 2018-07-17 | 2018-12-18 | 中铁大桥勘测设计院集团有限公司 | A kind of curve tower abnormity Cable-Stayed Bridge Structure |
| CN109898422A (en) * | 2019-03-11 | 2019-06-18 | 中建三局第一建设工程有限责任公司 | Rope method for rapidly mounting between a kind of abnormal shape steel bridge tower tower |
| CN109853393A (en) * | 2019-03-19 | 2019-06-07 | 湖南联智智能科技有限公司 | A kind of the hanging cable construction system and its construction method of king-tower vertical transfer cable-stayed bridge |
| CN113123240A (en) * | 2021-04-12 | 2021-07-16 | 中国建筑第八工程局有限公司 | Installation device for stay cable of special-shaped leaning tower and construction method thereof |
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