2,000 MPa durable parallel steel wire stay cable of highway and railway cable-stayed bridge

A technology for road-rail dual-purpose, cable-stayed bridges, applied in bridges, bridge parts, bridge construction, etc., can solve the problems that cannot meet the needs of road-rail dual-purpose cable-stayed bridges, restrict the application of cable-stayed cables, etc., and achieve the improvement of fretting fatigue Effects of abrasion, prevention of local damage, and enhancement of anti-corrosion performance

Active Publication Date: 2015-11-11
JIANGSU FASTEN STEEL CABLE CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of cable-stayed cable structure cannot meet the characteristics of cable-stayed bridges for highway and railway, and restricts the application of cable-stayed cables in this field

Method used

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  • 2,000 MPa durable parallel steel wire stay cable of highway and railway cable-stayed bridge
  • 2,000 MPa durable parallel steel wire stay cable of highway and railway cable-stayed bridge
  • 2,000 MPa durable parallel steel wire stay cable of highway and railway cable-stayed bridge

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 with 2 As shown, the stay cable structure in this embodiment includes an anchor cup 1, an anchor ring 5, a connecting cylinder 3 and a cable body 4. The front end of the anchor cup 1 is formed with a boss 2, and the anchor cup 1 and the boss 2 are integrated. The outer diameter of the anchor cup 1 is larger than that of the boss 2, forming a variable diameter structure. The transition step between the boss 2 and the anchor cup 1 is a large fillet shape, and the radius of the fillet is 5-10mm. The connecting cylinder 3 and the boss 2 The inner and outer joints can effectively prevent rainwater from infiltrating into the connection between the connecting cylinder 3 and the anchor cup 1 to induce corrosion. The anchor cup 1 forms a tapered cavity A that gradually expands from the outside to the inside. The entrance of th...

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PUM

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Abstract

The invention relates to a 2,000 MPa durable parallel steel wire stay cable of a highway and railway cable-stayed bridge. The parallel steel wire stay cable comprises an anchor cup, a connecting cylinder and a cable body. The connecting cylinder is connected to the front end of the anchor cup. The cable body penetrates through the connecting cylinder to be fixed into the anchor cup. A conical cavity gradually becoming larger from exterior to interior is formed in an inner cavity of the anchor cup. A curve limiting ring is arranged at an inlet of the conical cavity. A steel wire harness in the cable body is arranged in the conical cavity in a dispersing mode through the curve limiting ring. The parallel steel wire stay cable has the advantages of being high in strength and durable in use. Especially by optimizing the anchor structure, the flexible curve limiting ring corresponding to the cable body is arranged at the bent position in an anchor, on one hand, direct rigid contact between steel wires and the anchor cup is avoided, and local damage is prevented; on the other hand, the micro-moving fatigue abrasion of the bent positions of the steel wires is changed, and the use requirements for large dynamic loads and high stress amplitude of the stay cable of the highway and railway cable-stayed bridge can be met.

Description

technical field [0001] The invention relates to a cable-stayed cable structure of a cable-stayed bridge, in particular to a high-strength, more durable cable-stayed cable-stayed bridge for road and rail. Background technique [0002] Features of cable-stayed bridges for road and rail: Compared with road bridges, railway bridges have larger impact dynamic loads and higher stress amplitudes due to the high speed of trains. The stay cables need to meet the requirements of high strength, high dynamic load, high stress amplitude and durability. [0003] At present, the cable-stayed cable structure used in bridge types such as highway cable-stayed bridges and arch bridges is to wrap a layer of high-strength polyester fiber tape on the outside of the galvanized steel wire, and then coat a layer of high-density polyethylene on the outside of the high-strength polyester fiber tape. (HDPE) sheath, equipped with national standard anchors at both ends. This kind of cable-stayed cable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/16
Inventor 赵军薛花娟周祝兵吴琼黄可彬朱晓雄强强
Owner JIANGSU FASTEN STEEL CABLE CO LTD
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