Soft and hard combined traction method for long-cable installation of cable-stayed bridge

A technology of soft traction and cable-stayed bridges, applied to cable-stayed bridges, bridge forms, bridges, etc., can solve the problems of long traction distance, large traction force of long cable installation, etc., and achieve the effect of convenient docking and strong operability

Inactive Publication Date: 2010-06-30
CCCC SECOND HIGHWAY ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a set of cable-stayed bridge long cable installation soft and ha...

Method used

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  • Soft and hard combined traction method for long-cable installation of cable-stayed bridge
  • Soft and hard combined traction method for long-cable installation of cable-stayed bridge
  • Soft and hard combined traction method for long-cable installation of cable-stayed bridge

Examples

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Embodiment Construction

[0010] Such as figure 1 and figure 2 As shown, the long cable of the cable-stayed bridge is installed with soft and hard combined traction devices, including: cable-stayed cable 1, cable-stayed anchor head 2, thin tension rod 301, thick tension rod 302, tension rod anchor nut 4, soft traction head 5. Auxiliary anchor backing plate 6, soft traction self-locking tool anchor 7, support foot 8, soft traction steel strand 9, jack 10, stay cable anchor back plate 11, tool nut 12, stay cable anchor nut 13. The center part of the bottom of the support leg 8 and the jack 10 has the lower shuttle hole for the shuttle thick tension rod 302, the stay cable anchor pad 11 at the top of the support leg 8 has the upper shuttle hole for the shuttle soft traction head 5, the lower shuttle hole and the upper shuttle hole On one axis, one end of the thin tension rod 301 is connected to the stay cable 1 through the cable anchor head 2, and the bottom of the thin tension rod 301 is fixed with the...

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Abstract

The invention relates to a long-span cable-stayed bridge, in particular to a soft and hard combined traction method for long-cable installation of a cable-stayed bridge. The long-span cable-stayed bridge is characterized by at least comprising stayed cables, a cable-stayed anchor head, a thin tensioned pull rod, a rough tensioned pull rod, a soft drawing head, an auxiliary anchoring base plate, a soft traction self-locking tool anchor, a supporting lug, a soft traction steel strand, a lifting jack, a stayed-cable anchoring base plate and a stayed-cable anchoring nut. The bottom end of the thin tensioned pull rod passes through the auxiliary anchoring base plate and the soft traction self-locking tool anchor through the soft traction steel strand to be fixed with the bottom of the lifting jack; the lifting jack is started and draws the soft traction steel strand to perform reciprocating traction; the lifting jack is drained back and the rough tensioned pull rod replaces the soft traction steel strand for hard traction again; and when the cable-stayed anchor head enters a preserved anchoring port of the tower body, the tool nut is screwed and the stayed cable is anchored on the tower body to finish long-cable installation. The invention solves the difficult problems of large traction force, long traction distance and the like of long-cable installation.

Description

technical field [0001] The invention relates to a long-span cable-stayed bridge, in particular to a long-span cable-stayed bridge superstructure construction process. When the long cable is installed, soft and hard traction are combined to realize the anchorage device at both ends of the cable-stayed cable. Cable installation soft and hard combined traction method. Background technique [0002] In recent years, long-span cable-stayed bridges have been used more and more, and the continuous breakthroughs in spans have brought about constant updates in the length and weight of cable-stayed bridges. The general winch pulls the stay cable into the anchor box for anchorage, that is, the girder end of the stay cable is anchored first, and the technology of using the winch to pull the other end into the anchor box on the bridge tower for anchoring can no longer meet the requirements of long stay cable installation on traction force, Towing length requirements. Contents of the in...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D11/04
Inventor 任回兴贺茂生张建军孙克强高安荣杨雪瑞
Owner CCCC SECOND HIGHWAY ENG CO LTD
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