CN109610351B - Method for treating axial lead of steel box girder suspension bridge - Google Patents
Method for treating axial lead of steel box girder suspension bridge Download PDFInfo
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- CN109610351B CN109610351B CN201910017715.0A CN201910017715A CN109610351B CN 109610351 B CN109610351 B CN 109610351B CN 201910017715 A CN201910017715 A CN 201910017715A CN 109610351 B CN109610351 B CN 109610351B
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a method for treating the axial lead of a steel box girder suspension bridge, and belongs to the field of steel box girder suspension bridges. The method for treating the axial lead of the steel box girder suspension bridge comprises the following steps: after the bridge is qualified, measuring the full-bridge linear data and the axial lead data of the bridge to obtain first data, and storing the first data; regularly measuring full-bridge linear data and axial lead data of the bridge to obtain second data; comparing the second data with the first data to obtain the actual total gap of the transverse wind-resistant support; the actual total clearance with horizontal anti-wind support with predetermine total clearance and contrast, when the actual total clearance of horizontal anti-wind support is greater than predetermineeing total clearance, tear open the inspection to horizontal anti-wind support. The method for treating the axial lead of the steel box girder suspension bridge can avoid the instantaneous impact of the transverse wind-resistant support on the ground hydraulic trolley, and ensure the safe and reliable disassembly and hoisting.
Description
Technical Field
The invention relates to the field of steel box girder suspension bridges, in particular to a method for treating the axial lead of a steel box girder suspension bridge.
Background
In bridge construction in China, steel box girder suspension bridges are widely applied due to the requirements of geographical environment, navigation and aviation. The steel box girder suspension bridge is used for resisting transverse wind load, a plurality of transverse wind resisting supports and transverse limiting bases are arranged on two sides of the longitudinal axis of the steel box girder besides the structural design of the wind nozzles at the two transverse ends of the steel box girder, the vertical supports, the longitudinal limiting bases and the main expansion joints are arranged at the two ends of the axial line of the bridge for the bridge to adapt to the expansion caused by heat and the contraction caused by cold of the natural environment.
After the bridge is built into a through car, the operation is carried out for 3-8 years, along with the increase of traffic volume and the influence of dynamic load and other indefinite factors of the car, the deviation of the axial lead of the bridge and the deviation of the total gap of the transverse wind-resistant support are inevitable. Along with the gradual increase of deviation, change into the out-of-tolerance, these out-of-tolerance defects can accelerate horizontal anti-wind support wearing and tearing, local damage, the functional failure, and serious can influence the operation safety of bridge, and it is especially important to establish the treatment method of steel case roof beam suspension bridge axial lead in operation.
Disclosure of Invention
The invention provides a method for treating the axial lead of a steel box girder suspension bridge, and aims to solve the problems of the method for treating the axial lead of the steel box girder suspension bridge in the prior art.
The invention is realized by the following steps:
a method for treating the axial lead of a steel box girder suspension bridge comprises the following steps:
after the bridge is qualified, measuring the full-bridge linear data and the axial lead data of the bridge to obtain first data, and storing the first data;
regularly measuring full-bridge linear data and axial lead data of the bridge to obtain second data;
comparing the second data with the first data to obtain the actual total gap of the transverse wind-resistant support;
comparing the actual total gap of the transverse wind-resistant support with the preset total gap, and when the actual total gap of the transverse wind-resistant support is larger than the preset total gap, performing disassembly and inspection on the transverse wind-resistant support;
the method for overhauling the transverse wind-resistant support comprises the following steps:
disassembling the original transverse wind-resistant support by utilizing a soft cable disassembling and assembling device;
mounting the temporary support at the position of the original transverse wind-resistant support;
and replacing the support out-of-tolerance parts, and assembling a new transverse wind-resistant support.
In a preferred embodiment of the invention, the method of obtaining the actual total clearance of the lateral wind-resistant support is:
leading the full-bridge linear data of the bridge in the first data to an anchorage, and forming a reference axial lead on a transverse limiting base surface of a lower beam of a tower column;
and (4) referencing a reference shaft axis, and respectively measuring the gaps of the transverse wind-resistant supports at two sides of the shaft axis.
In a preferred embodiment of the invention, the actual total clearance of the lateral wind-resistant support is compared with the preset total clearance, and the lateral wind-resistant support is inspected when the actual total clearance of the lateral wind-resistant support is greater than 5-6 times the preset total clearance.
In a preferred embodiment of the present invention, the dismantling and inspecting the lateral wind-resistant support further comprises:
and (4) checking the automatic centering spring, replacing the broken automatic centering spring, and performing anticorrosive treatment on the rusted automatic centering spring.
In a preferred embodiment of the present invention, the device for detaching and installing a flexible cable includes:
a threaded seat plate;
the lifting rings are arranged in a plurality and are connected with the threaded base plate;
one end of the turn bolt is connected with the hanging ring;
one end of the steel wire rope is connected with one end, far away from the hanging ring, of the turn buckle;
the shackle is connected with one end, far away from the turn buckle, of the steel wire rope;
a tray connected with the shackle.
In a preferred embodiment of the present invention, the soft cable dismounting device further includes a hoisting mechanism, the hoisting mechanism is connected to the threaded bottom plate, and the hoisting mechanism is used for hoisting the threaded bottom plate.
In a preferred embodiment of the present invention, the number of the hanging rings is two, the two hanging rings are arranged at intervals, the number of the shackles is two, and the two shackles are respectively connected to two ends of the tray.
In a preferred embodiment of the invention, the temporary support is a tetrafluoroethylene plate, and the length and width dimensions of the temporary support are the same as those of a bridge support.
In a preferred embodiment of the present invention, the temporary support is provided with a through hole, the through hole is circular, and the through hole is arranged in the middle of the temporary support.
In a preferred embodiment of the present invention, the temporary support is provided with a plurality of connecting holes, and the plurality of connecting holes are spaced apart from each other.
The invention has the beneficial effects that:
according to the method for treating the axial lead of the steel box girder suspension bridge, which is obtained by the design, when the method is used, the actual total gap of the transverse wind-resistant support can be obtained through measurement, when the actual total gap of the transverse wind-resistant support is larger than a preset value, the transverse wind-resistant support and the adjusting base plate are treated, the positions of the transverse wind-resistant support and the adjusting base plate are narrow and difficult to hoist, and the steel box girder does irregular movement, if a hard device is adopted, hoisting and equipment damage are easily caused, and meanwhile, the safety of people is also endangered, the transverse wind-resistant support can be prevented from instantly impacting a ground hydraulic trolley by adopting a soft cable device, and the safety and reliability in hoisting are guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a soft cable dismounting device in a method for treating an axial lead of a steel box girder suspension bridge according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a temporary support in a method for treating an axial lead of a steel box girder suspension bridge according to an embodiment of the present invention.
Icon: 100-disassembling and assembling the flexible cable device; 110-thread plate; 120-hoisting ring; 130-turnbuckle; 140-a steel wire rope; 150-shackle removal; 160-a tray; 200-a temporary support; 210-a via; 220-connecting hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Example one
The embodiment provides a method for treating the axial lead of a steel box girder suspension bridge, and please refer to fig. 1 and 2, the method for treating the axial lead of the steel box girder suspension bridge comprises the following steps:
after the bridge is qualified, measuring the full-bridge linear data and the axial lead data of the bridge to obtain first data, and storing the first data;
regularly measuring full-bridge linear data and axial lead data of the bridge to obtain second data;
comparing the second data with the first data to obtain the actual total gap of the transverse wind-resistant support;
comparing the actual total gap of the transverse wind-resistant support with the preset total gap, and when the actual total gap of the transverse wind-resistant support is larger than the preset total gap, performing disassembly and inspection on the transverse wind-resistant support;
the method for overhauling the transverse wind-resistant support comprises the following steps:
the original transverse wind-resistant support is disassembled by utilizing the soft cable disassembling and assembling device 100;
installing the temporary support 200 at the original transverse wind-resistant support position;
and replacing the support out-of-tolerance parts, and assembling a new transverse wind-resistant support.
When using, can obtain the actual total clearance of horizontal anti-wind support through measuring, when the actual total clearance of horizontal anti-wind support is greater than predetermined value, because punishment horizontal anti-wind support and adjustment backing plate, its position is narrow and small, difficult hoist and mount, including steel box girder irregular motion again, if adopt hard device easily to cause hoist and mount and equipment to damage, still can endanger people's safety simultaneously, adopt the soft cable device can avoid horizontal anti-wind support to strike ground hydraulic pressure shallow in the twinkling of an eye, the guarantee is torn open, hoist and mount safe and reliable.
Optionally, in this embodiment, the method of obtaining the actual total gap of the lateral wind-resistant support includes:
leading the full-bridge linear data of the bridge in the first data to the horizontal limiting base surface of the anchor and the lower beam of the tower column to form a reference axial lead;
and (4) referencing a reference shaft axis, and respectively measuring the gaps of the transverse wind-resistant supports at two sides of the shaft axis.
The reference axial lead formed by leading full-bridge linear data to the horizontal limiting base surface of the anchor and the lower beam of the tower column has strong reference performance, and the measured horizontal wind-resistant support has high accuracy.
Optionally, in this embodiment, the actual total gap of the lateral wind-resistant support is compared with the preset total gap, and when the actual total gap of the lateral wind-resistant support is greater than 5-6 times of the preset total gap, the lateral wind-resistant support is disassembled and inspected.
Optionally, in this embodiment, the dismantling and inspecting the transverse wind-resistant support further includes:
and (4) checking the automatic centering spring, replacing the broken automatic centering spring, and performing anticorrosive treatment on the rusted automatic centering spring.
The service life of the automatic aligning spring can be effectively prolonged by replacing the automatic aligning spring or performing anticorrosive treatment on the automatic aligning spring.
In this embodiment, the dismantling and inspecting the transverse wind-resistant support further includes:
checking whether the tetrafluoroethylene gasket falls off or not, and if the tetrafluoroethylene gasket falls off, detaching and picking the tetrafluoroethylene gasket.
And inspecting the self-aligning copper panel, and treating the single-deviation abrasion.
And (5) checking the corrosion of the self-aligning bolt, and treating the damaged thread.
And (5) checking the aging of the dustproof rubber ring, wherein the fracture needs to be updated.
And checking whether the transverse wind-resistant support anti-loosening device is loosened and needs to be firm.
Optionally, in this embodiment, the flexible rope dismounting device 100 includes:
a threaded seat plate;
the lifting rings 120 are arranged in a plurality, and the plurality of lifting rings 120 are connected with the threaded base plate;
a turn buckle 130, one end of the turn buckle 130 is connected with the hanging ring 120;
one end of the steel wire rope 140 is connected with one end of the turn buckle 130 far away from the hanging ring 120;
the shackle 150, the shackle 150 is connected with one end of the steel wire rope 140 far away from the turn buckle 130;
the tray 160, the tray 160 and the shackle 150 are connected.
Utilize the connection between rings 120 and the turn buckle 130, can make things convenient for the dismouting between turn buckle 130 and the rings 120, and turn buckle 130 can provide higher elasticity to wire rope 140 has certain elasticity, can avoid horizontal anti-wind support striking ground hydraulic pressure shallow in the twinkling of an eye when hoist and mount, and the guarantee is torn open, is hoisted safe and reliable.
Optionally, in this embodiment, the device for dismounting and mounting a flexible cable 100 further includes a hoisting mechanism, the hoisting mechanism is connected to the threaded bottom plate, and the hoisting mechanism is used for hoisting the threaded bottom plate.
Adopt the loop wheel machine as hoisting machine in this embodiment, the loop wheel machine hoists the screw thread bottom plate up, can be so that can have certain clearance for the operation to use between the box girder on the bridge and the support.
Optionally, in this embodiment, two lifting rings 120 are provided, two lifting rings 120 are spaced apart from each other, two shackles 150 are provided, and the two shackles 150 are respectively connected to two ends of the tray 160.
The two hanging rings 120 are respectively connected to two ends of the threaded bottom plate, the number of the basket bolts 130 and the number of the steel wire ropes 140 are two, and the hanging rings 120, the basket bolts 130, the steel wire ropes 140 and the shackles 150 are in one-to-one correspondence.
Optionally, in this embodiment, the temporary support 200 is a tetrafluoroethylene plate, and the length and width of the temporary support 200 are the same as the support of the bridge.
The temporary support 200 is made of tetrafluoroethylene plate, so that the temporary support is made of the same material as the original support and can play a good supporting role.
Optionally, in this embodiment, a through hole 210 is provided on the temporary support 200, the through hole 210 is configured to be circular, and the through hole 210 is provided in the middle of the temporary support 200.
Optionally, in this embodiment, a plurality of connection holes 220 are provided on the temporary support 200, and the connection holes 220 are spaced apart from each other.
The plurality of coupling holes 220 may facilitate coupling the temporary support 200 with the support of the bridge.
The steel box girder suspension bridge axial lead treatment method provided by the embodiment, when the method is used, the actual total clearance of the transverse wind-resistant support can be obtained through measurement, when the actual total clearance of the transverse wind-resistant support is larger than a preset value, because the transverse wind-resistant support and the adjusting base plate are treated, the position of the transverse wind-resistant support is narrow and small, the transverse wind-resistant support is not easy to hoist, and the steel box girder does irregular movement.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for treating the axial lead of a steel box girder suspension bridge is characterized by comprising the following steps:
after the bridge is qualified, measuring the full-bridge linear data and the axial lead data of the bridge to obtain first data, and storing the first data;
regularly measuring full-bridge linear data and axial lead data of the bridge to obtain second data;
comparing the second data with the first data to obtain the actual total gap of the transverse wind-resistant support;
comparing the actual total gap of the transverse wind-resistant support with the preset total gap, and when the actual total gap of the transverse wind-resistant support is larger than the preset total gap, performing disassembly and inspection on the transverse wind-resistant support;
the method for overhauling the transverse wind-resistant support comprises the following steps:
disassembling the original transverse wind-resistant support by utilizing a soft cable disassembling and assembling device;
mounting the temporary support at the position of the original transverse wind-resistant support;
replacing the support out-of-tolerance part, and assembling a new transverse wind-resistant support;
the soft cable dismounting device comprises:
a threaded seat plate;
the lifting rings are arranged in a plurality and are connected with the threaded base plate;
one end of the turn bolt is connected with the hanging ring;
one end of the steel wire rope is connected with one end, far away from the hanging ring, of the turn buckle;
the shackle is connected with one end, far away from the turn buckle, of the steel wire rope;
a tray connected with the shackle.
2. The method for treating the axial lead of the steel box girder suspension bridge as claimed in claim 1, wherein the method for obtaining the actual total clearance of the lateral wind-resistant support comprises the following steps:
leading the full-bridge linear data of the bridge in the first data to an anchorage, and forming a reference axial lead on a transverse limiting base surface of a lower beam of a tower column;
and (4) referencing a reference shaft axis, and respectively measuring the gaps of the transverse wind-resistant supports at two sides of the shaft axis.
3. The method for treating the axial lead of the steel box girder suspension bridge as recited in claim 1, wherein the actual total clearance of the lateral wind-resistant support is compared with the preset total clearance, and the lateral wind-resistant support is inspected when the actual total clearance of the lateral wind-resistant support is greater than 5-6 times of the preset total clearance.
4. The method for treating the axial lead of the steel box girder suspension bridge according to claim 1, wherein the overhauling of the transverse wind-resistant support further comprises:
and (4) checking the automatic centering spring, replacing the broken automatic centering spring, and performing anticorrosive treatment on the rusted automatic centering spring.
5. The method for treating the axial lead of the steel box girder suspension bridge as recited in claim 1, wherein the device for disassembling and assembling the soft cable further comprises a hoisting mechanism, the hoisting mechanism is connected with the threaded seat plate, and the hoisting mechanism is used for hoisting the threaded seat plate.
6. The method for treating the axial lead of the steel box girder suspension bridge as claimed in claim 1, wherein the number of the hanging rings is two, the two hanging rings are spaced apart from each other, the number of the shackles is two, and the two shackles are respectively connected to two ends of the tray.
7. The method for treating the axial lead of the steel box girder suspension bridge according to claim 1, wherein the temporary support is a tetrafluoroethylene plate, and the length and width of the temporary support are the same as the support of the bridge.
8. The method for treating the axial lead of the steel box girder suspension bridge according to claim 7, wherein the temporary support is provided with a through hole, the through hole is circular, and the through hole is formed in the middle of the temporary support.
9. The method for treating the axial lead of the steel box girder suspension bridge according to claim 8, wherein the temporary support is provided with a plurality of connecting holes, and the plurality of connecting holes are arranged at intervals.
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| CN201910017715.0A CN109610351B (en) | 2019-01-08 | 2019-01-08 | Method for treating axial lead of steel box girder suspension bridge |
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| CN201910017715.0A CN109610351B (en) | 2019-01-08 | 2019-01-08 | Method for treating axial lead of steel box girder suspension bridge |
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| CN109610351B true CN109610351B (en) | 2020-07-21 |
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| JPH1181240A (en) * | 1997-09-11 | 1999-03-26 | Ishikawajima Harima Heavy Ind Co Ltd | Beam structure for continuous beam bridge |
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2019
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|---|---|---|---|---|
| JPH1181240A (en) * | 1997-09-11 | 1999-03-26 | Ishikawajima Harima Heavy Ind Co Ltd | Beam structure for continuous beam bridge |
| JP2008308872A (en) * | 2007-06-14 | 2008-12-25 | Metropolitan Expressway Co Ltd | U-rib steel floor slab |
| CN203382361U (en) * | 2013-07-29 | 2014-01-08 | 山东国风风电设备有限公司 | Special lifting appliance for lifting bearings |
| CN203625762U (en) * | 2013-12-16 | 2014-06-04 | 中交公路规划设计院有限公司 | Multi-tower cable-stayed bridge provided with double rows of support systems |
| CN108875283A (en) * | 2018-08-09 | 2018-11-23 | 中交基础设施养护集团有限公司 | A kind of Method for Accurate Calculation of Spatial Cable face Unloaded Cable Shape of Suspension Bridges |
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