CN-119980901-B - Steel strand stay cable dismantling device and method

Abstract

The application discloses a steel strand stay cable dismantling device and method, which relate to the technical field of bridge construction, wherein the device comprises: the hydraulic tension device comprises a platform and a hydraulic tension component for tension the steel strand, wherein a rotating piece connected with the platform in a rotating mode is arranged at one end of the hydraulic tension component, a first jack used for realizing rotation of the hydraulic tension component around the rotating piece is arranged between the hydraulic tension component and the platform, the hydraulic tension component comprises a first anchoring piece and a second anchoring piece used for anchoring the steel strand, and a hydraulic telescopic component arranged between the first anchoring piece and the second anchoring piece to realize release of internal stress of the steel strand between the first anchoring piece and the second anchoring piece. According to the embodiment of the application, the components for dismantling the stay cable steel stranded wires are all integrated on the platform, the structure is compact, the space is not occupied, and meanwhile, the beam end is subjected to the tension cutting operation, so that the safety of the stay cable steel stranded wires in the dismantling process is further improved.

Inventors

• WANG BO
• LI HONGYOU
• ZHAI LEI
• LI YUNYOU
• OUYANG QUAN
• LI HUIDONG
• ZHANG YU
• Ao Renjie
• YAN HAN
• GAO TIAN
• WANG XIANG
• CHEN ZHIMIN
• LOU SONG
• WU YUNHONG
• ZHONG JIWEI
• PENG XUMIN

Assignees

• 中铁大桥局集团有限公司
• 中铁大桥科学研究院有限公司
• 中铁大桥局武汉桥梁特种技术有限公司

Dates

Publication Date

20260505

Application Date

20250311

Claims (9)

1. 1. The utility model provides a device is demolishd to steel strand wires stay cable which characterized in that includes: A platform (1); The hydraulic tension device comprises a hydraulic tension component (2) for tensioning the steel strands (8), wherein a rotating piece which is rotationally connected with a platform (1) is arranged at one end of the hydraulic tension component (2), and a first jack (3) which is used for realizing the rotation of the hydraulic tension component (2) around the rotating piece is arranged between the hydraulic tension component (2) and the platform (1); A second jack (4) and a third jack (5) positioned on the platform (1), the hydraulic tension assembly (2) is arranged between the second jack (4) and the third jack (5); The steel strand pulling device comprises a first hook claw (6) and a second hook claw (7) which are used for separating a steel strand (8) to be pulled from a steel strand (8) bundle, wherein the first hook claw (6) is arranged at one end of a second jack (4) far away from a platform (1), and the second hook claw (7) is arranged at one end of a third jack (5) far away from the platform (1); a moving assembly (12), wherein a pulley (122) for moving the platform (1) is arranged on the outer side wall of the moving assembly (12); The hydraulic tension releasing assembly (2) comprises a first anchoring piece (21) and a second anchoring piece (22) for anchoring the steel strand (8), and a hydraulic telescopic assembly (23) which is arranged between the first anchoring piece (21) and the second anchoring piece (22) to realize the release of internal stress of the steel strand (8) between the first anchoring piece (21) and the second anchoring piece (22).
2. 2. The steel strand stay cable dismantling device according to claim 1, wherein one end of the first hook claw (6) connected with the steel strand (8), the hydraulic tension component (2) and one end of the second hook claw (7) connected with the steel strand (8) are sequentially distributed along the inclined direction of the steel strand (8).
3. 3. The steel strand stay cable removal device according to claim 1, wherein the hydraulic telescoping assembly (23) comprises: a piston rod (231), wherein one end of the piston rod (231) is fixedly connected with the first anchoring piece (21); the hydraulic cylinder (232) is sleeved outside the piston rod (231), and one end, away from the piston rod (231), of the hydraulic cylinder (232) is fixedly connected with the second anchoring piece (22); the hydraulic device comprises a hydraulic cylinder (232), a hydraulic side plate (233) fixedly connected with the hydraulic cylinder, and a rotating piece, wherein the rotating piece comprises a rotating shaft and a rotating plate (24), the rotating plate (24) is arranged on one surface of the hydraulic side plate (233) facing the platform (1), and the rotating plate (24) is provided with a through hole for the rotating shaft to pass through.
4. 4. The steel strand stay cable removal device of claim 3, further comprising: The first support (9) is fixedly connected to the platform (1), and a rotating hole for the rotating shaft to pass through is formed in one end, away from the platform (1), of the first support (9); The second support (10) is fixedly connected to the platform (1), and one end, far away from the platform (1), of the second support (10) is fixedly connected with the first jack (3).
5. 5. The steel strand stay cable removal device of claim 1, further comprising: the guide rod (25), one end of guide rod (25) with first anchor assembly (21) fixed connection, the other end of guide rod (25) wears to locate the guiding hole that second anchor assembly (22) offered.
6. 6. The steel strand stay cable removal device of claim 1, further comprising: The hydraulic telescopic device comprises a platform telescopic component (11), wherein one end of the platform telescopic component (11) is in sliding connection with one surface of the platform (1) away from the hydraulic tension component (2), and a sliding way (121) for sliding the platform telescopic component (11) is arranged on the inner side wall of the moving component (12).
7. 7. The steel strand stay cable dismantling device according to claim 1, wherein the first anchoring piece (21) is provided with a first anchoring hole, the first anchoring piece (21) further comprises first clamping pieces (13) clamped at two sides of the first anchoring hole, a first locking hole for the steel strand (8) to pass through is formed between the first clamping pieces (13) and the first anchoring hole, the second anchoring piece (22) is provided with a second anchoring hole, the second anchoring piece (22) further comprises second clamping pieces (14) clamped at two sides of the second anchoring hole, a second locking hole for the steel strand (8) to pass through is formed between the second clamping pieces (14) and the second anchoring hole, and the first locking hole is aligned with the second locking hole.
8. 8. A steel strand stay cable removing method based on the steel strand stay cable removing device according to any one of claims 1 to 7, comprising: Picking up Zhang Gang stranded wires to be put, separating Zhang Gang stranded wires to be put from a steel stranded wire bundle, and adjusting a first jack (3) so that the hydraulic tension assembly (2) is parallel to Zhang Gang stranded wires to be put; And anchoring the to-be-released Zhang Gang stranded wire between the first anchoring piece (21) and the second anchoring piece (22), tightening the hydraulic tension assembly (2) to release the internal stress of the to-be-released Zhang Gang stranded wire, and cutting off the to-be-released Zhang Gang stranded wire after releasing the internal stress.
9. 9. The method for removing a stay cable from a steel strand according to claim 8, further comprising, after cutting the to-be-placed Zhang Gang strand after releasing the internal stress: restoring the hydraulic telescopic component (23) to an extending state, and releasing the internal stress of the section of the steel strand wire harness connecting tower end and the connecting beam end where the Zhang Gang stranded wires are to be placed.

Description

Steel strand stay cable dismantling device and method Technical Field The invention relates to the technical field of bridge construction, in particular to a steel strand stay cable dismantling device and method. Background The steel strand stay cable is a high-strength prestress component commonly used in cable-stayed bridges and other large bridge structures. The high-strength steel wire is formed by twisting a plurality of high-strength steel wires, has excellent tensile property and durability, and can bear huge load of a bridge. The replacement and maintenance of the steel strand stay cable are important links for ensuring long-term safe operation of the bridge. Fatigue, corrosion or damage may occur due to the long-term exposure of the stay cable to dynamic loads and environmental attack, and therefore periodic inspection, maintenance, and replacement if necessary, is required. From the historical development of cable stayed bridges in China, most of the steel strand stay cables run for a long time and enter a replacement period. The steel strand stay cable is mainly subjected to two methods of tower end operation and beam end opening and cutting, the tower end operation and the beam end opening and cutting are limited by operation space and high-altitude operation safety, the industry gradually gives up use, and in recent years, practitioners increasingly adopt the beam end opening and cutting method, but most of the methods are still low in efficiency. The research on the high-efficiency and safe beam end inhaul cable tension releasing construction method is very significant in combination with the current construction situation of the industry. Disclosure of Invention The application provides a steel strand stay cable dismantling device and method, which can solve the technical problem of lower safety in the tension releasing construction of the steel strand stay cable in the prior art. The embodiment of the application provides a steel strand stay cable dismantling device which comprises a platform, a hydraulic tension releasing assembly, a rotating piece and a first jack, wherein the hydraulic tension releasing assembly is used for releasing a steel strand, one end of the hydraulic tension releasing assembly is provided with the rotating piece which is rotationally connected with the platform, the first jack is arranged between the hydraulic tension releasing assembly and the platform and used for enabling the hydraulic tension releasing assembly to rotate around the rotating piece, and the hydraulic tension releasing assembly comprises a first anchoring piece and a second anchoring piece which are used for anchoring the steel strand, and a hydraulic telescopic assembly which is arranged between the first anchoring piece and the second anchoring piece and used for releasing internal stress of the steel strand between the first anchoring piece and the second anchoring piece. In combination with the first aspect, in one implementation mode, the hydraulic tension releasing assembly further comprises a second jack and a third jack which are positioned on the platform, wherein the hydraulic tension releasing assembly is arranged between the second jack and the third jack, and a first hook claw and a second hook claw which are used for separating a steel strand to be tensioned from a steel strand bundle are arranged on one end, far away from the platform, of the second jack, and the second hook claw is arranged on one end, far away from the platform, of the third jack. In combination with the first aspect, in one implementation manner, the end, connected with the steel strand, of the first hook claw, the hydraulic tension releasing assembly, and the end, connected with the steel strand, of the second hook claw are sequentially arranged along the inclination direction of the steel strand. In combination with the first aspect, in one implementation mode, the hydraulic telescopic assembly comprises a piston rod, a hydraulic cylinder sleeved outside the piston rod, a hydraulic side plate fixedly connected with the hydraulic cylinder, and a rotating piece, wherein one end of the piston rod is fixedly connected with the first anchoring piece, one end of the hydraulic cylinder, which is far away from the piston rod, is fixedly connected with the second anchoring piece, the rotating piece comprises a rotating shaft and a rotating plate, the rotating plate is arranged on one surface of the hydraulic side plate, which faces the platform, and the rotating plate is provided with a through hole for the rotating shaft to pass through. In combination with the first aspect, in one implementation mode, the lifting jack further comprises a first support fixedly connected to the platform, a rotating hole for the rotating shaft to pass through is formed in one end, away from the platform, of the first support, and a second support fixedly connected with the platform, and one end, away from the platform, of the second supp