CN219410519U - Temporary shock-absorbing device for stay cable - Google Patents
Temporary shock-absorbing device for stay cable Download PDFInfo
- Publication number
- CN219410519U CN219410519U CN202320899839.8U CN202320899839U CN219410519U CN 219410519 U CN219410519 U CN 219410519U CN 202320899839 U CN202320899839 U CN 202320899839U CN 219410519 U CN219410519 U CN 219410519U
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- China
- Prior art keywords
- lug plate
- cable
- mounting hole
- stay cable
- suspension
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a temporary shock absorbing device for a suspension cable, which comprises a load transmission ring, a suspension strut and an anchor plate, wherein the load transmission ring is hooped on the suspension cable, a first lug plate is welded on the load transmission ring, a first mounting hole is formed in the first lug plate, the anchor plate is embedded in a main beam, a second lug plate is welded on the anchor plate, the second lug plate is exposed above the main beam, a second mounting hole is formed in the second lug plate, the suspension strut comprises a screw rod and two steel pipes which are screwed at two ends of the screw rod, the two ends of the screw rod are oppositely rotated, the other ends of the two steel pipes are welded with bolts which extend in the radial direction, the rod parts of the bolts face outwards, one steel pipe is fixed in the first mounting hole through a bolt matched nut, the other steel pipe is fixed in the second mounting hole through a bolt matched nut, the axis of the suspension strut is at a right angle of 90 degrees with the suspension cable, and the length of the suspension strut can be adjusted by screwing the screw rod, so that the suspension cable can be tensioned on the anchor plate. The utility model can effectively inhibit the vibration of the stay cable while improving the disassembly and assembly work efficiency.
Description
Technical Field
The utility model relates to the technical field of cable-stayed bridge construction, in particular to a temporary shock-absorbing device for a stay cable.
Background
With the rapid development of the construction industry of the domestic expressway, the stay cable of the large-span cable-stayed bridge has low natural frequency and modal damping ratio due to large slenderness ratio, is easy to vibrate under external excitation, and particularly can vibrate greatly when the tower crane rotates and the bridge deck automobile crane walks to excite in the construction process. The temporary damper is arranged at the end part of the stay cable to provide additional damping for the stay cable, so that vibration of the stay cable can be effectively restrained or reduced. At present, a permanent damping system is arranged in the cable-stayed bridge design, and the permanent damping system is respectively an external damper and an internal damper. However, due to the technical requirements of the construction process of the cable-stayed bridge, the installation of the built-in damper in the main girder construction process can affect the adjustment of the cable force of the full bridge in the later period, the permanent external damping installation process is complex, and the disassembly by professional technicians is required, so that the disassembly efficiency is low, the labor cost is high, the construction workload is increased to a certain extent, and the construction cost is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide the temporary shock absorbing device for the stay cable, which can effectively inhibit the vibration of the stay cable while improving the disassembly and assembly work efficiency so as to achieve the purposes of relatively stable cantilever system and higher and more efficient and more convenient work efficiency in the construction process.
In order to achieve the above purpose, the utility model provides a temporary shock absorber for an inclined cable, wherein the lower end of the inclined cable is fixed on a main girder of a cable-stayed bridge, the temporary shock absorber for the inclined cable comprises a load transmission ring, an inclined strut and an anchor plate, the load transmission ring is of a rigid hoop structure, the load transmission ring is hooped on the inclined cable, a first lug plate is welded on the load transmission ring, a first mounting hole is formed in the first lug plate, the anchor plate is embedded in the main girder, a second lug plate is welded on the anchor plate, the second lug plate is exposed above the main girder, a second mounting hole is formed in the second lug plate, the inclined strut comprises a screw rod and two steel pipes which are screwed at two ends of the screw rod, the two ends of the screw rod are opposite in rotation direction, the other ends of the two steel pipes are welded with bolts which extend radially, the rod parts of the bolts face outwards, one steel pipe is fixed in the first mounting hole through a bolt matching nut on the steel pipe, the other steel pipe is fixed in the second mounting hole through a bolt matching nut on the steel pipe, the axis of the inclined strut and the inclined cable can be screwed with the inclined cable by 90 degrees, the length of the inclined cable can be adjusted on the inclined strut, and the inclined cable can be further stretched by the length of the inclined strut.
In the scheme, the method comprises the following steps: geotextile is arranged between the load transfer ring and the stay cable to prevent the load transfer ring from damaging the stay cable PE sleeve.
In the scheme, the method comprises the following steps: the size of the anchor plate is 400 x 20mm, so that the anchor plate is conveniently embedded in main beam concrete.
In the scheme, the method comprises the following steps: stay cable, first otic placode and second otic placode are located same vertical face, and the stay bar of easy to assemble also is convenient for increase stable transverse restraint to the stay cable.
The beneficial effects of the utility model are as follows: 1. the device increases the transverse constraint force of the stay cable, connects the stay cable with a bridge deck anchor point, increases the damping coefficient, inhibits the vibration of the stay cable, has obvious damping effect, obviously reduces the vibration amplitude of the stay cable during cantilever construction, in the traveling process of an automobile crane and under wind and rain excitation, and has great popularization value; 2. the device is a temporary damping device, is convenient to disassemble and assemble subsequently, has low disassembly difficulty and simple installation steps, and can effectively save construction time; 3. the device cost of manufacture is low, and technical personnel's input reduces during operation, can effectively practice thrift construction cost.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
As shown in fig. 1, the temporary shock absorbing device for the stay cable mainly comprises a load transmission ring 2, a stay rod 3 and an anchor plate 4, wherein the lower end of the stay cable 1 is fixed on a main girder 5 of the cable-stayed bridge.
The load transfer ring 2 is of a rigid hoop structure, the load transfer ring 2 is hooped on the stay cable 1, a first lug plate 21 is welded on the load transfer ring 2, and a first mounting hole is formed in the first lug plate 21.
The anchor plate 4 is pre-buried in girder 5, has welded second otic placode 41 on the anchor plate 4, and second otic placode 41 exposes in girder 5 top, is equipped with the second mounting hole on second otic placode 41.
The diagonal brace 3 comprises a screw rod 31 and two steel pipes 32 which are in threaded connection with two ends of the screw rod 31, the two ends of the screw rod 31 are opposite in rotation direction, bolts extending in the radial direction are welded at the other ends of the two steel pipes 32, the rod parts of the bolts face outwards, one of the steel pipes 32 is fixed in the first mounting hole through a bolt matching nut on the steel pipe, and the other steel pipe 32 is fixed in the second mounting hole through a bolt matching nut on the steel pipe.
The axis of the stay bar 3 forms a right angle of 90 degrees with the stay cable 1, and the length of the stay bar 3 can be adjusted by twisting the screw rod 31, so that the stay cable 1 can be tensioned on the anchor plate 4.
Preferably, geotextile is arranged between the load transmission ring 2 and the stay cable 1 to prevent the load transmission ring 2 from damaging the stay cable 1PE sleeve.
Preferably, the size of the anchor plate 4 is 400 x 20mm, and the anchor plate is conveniently embedded in the concrete of the main beam 1.
Preferably, the stay cable 1, the first lug plate 21 and the second lug plate 41 are positioned on the same vertical surface, so that the stay rod 3 is convenient to install, and stable transverse restraining force is convenient to add to the stay cable 1.
The installation and use method of the utility model comprises the following steps:
1. embedding anchor plates in the main beam 5;
2. the load transfer ring 2 is arranged on the stay cable 1, geotextile is wound at the contact position of the load transfer ring 2 and the stay cable 1, and the load transfer ring 2 is prevented from damaging the stay cable 1PE sleeve;
3. the diagonal brace 3 is connected between the lug plate of the load transmission ring 2 and the lug plate of the anchor plate 4;
4. the axis of the inclined stay rod 3 and the inclined stay rope 1 form a right angle of 90 degrees, and the screw rod 31 of the inclined stay rod 3 is screwed for adjusting and tightening;
5. and (5) carrying out reverse operation disassembly during disassembly.
Claims (4)
1. The utility model provides a temporary damping device of stay cable, the lower extreme of stay cable (1) is fixed in on cable-stayed bridge girder (5), its characterized in that: the temporary shock absorption device for the suspension cable comprises a load transmission ring (2), a suspension stay bar (3) and an anchor plate (4), wherein the load transmission ring (2) is of a rigid hoop structure, the load transmission ring (2) is hooped on the suspension cable (1), a first lug plate (21) is welded on the load transmission ring (2), a first mounting hole is formed in the first lug plate (21), the anchor plate (4) is embedded in a main beam (5), a second lug plate (41) is welded on the anchor plate (4), the second lug plate (41) is exposed above the main beam (5), a second mounting hole is formed in the second lug plate (41), the suspension stay bar (3) comprises a screw rod (31) and two steel pipes (32) which are connected with two ends of the screw rod (31) in a screwed mode, bolts extending in the radial direction are welded at the other ends of the two steel pipes (32), the rod parts of the bolts face outwards, one steel pipe (32) is fixed in the first mounting hole through the first mounting hole, the other screw rod (32) is screwed on the second lug plate (3) through the second mounting hole, and the second lug plate (41) can be screwed on the suspension stay cable (1) through the second lug plate (3).
2. The stay cable temporary shock absorber according to claim 1, wherein: geotextile is arranged between the load transmission ring (2) and the stay cable (1).
3. The stay cable temporary shock absorber according to claim 1, wherein: the size of the anchor plate (4) is 400 x 20mm.
4. The stay cable temporary shock absorber according to claim 1, wherein: the stay cable (1), the first lug plate (21) and the second lug plate (41) are positioned on the same vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320899839.8U CN219410519U (en) | 2023-04-20 | 2023-04-20 | Temporary shock-absorbing device for stay cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320899839.8U CN219410519U (en) | 2023-04-20 | 2023-04-20 | Temporary shock-absorbing device for stay cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219410519U true CN219410519U (en) | 2023-07-25 |
Family
ID=87206553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320899839.8U Active CN219410519U (en) | 2023-04-20 | 2023-04-20 | Temporary shock-absorbing device for stay cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219410519U (en) |
-
2023
- 2023-04-20 CN CN202320899839.8U patent/CN219410519U/en active Active
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