No-catwalk cableway erecting method for main cable strands of suspension bridge

A suspension bridge and cable technology, applied in the field of installation and construction of main cables of suspension bridges, can solve the problems of easy torsion, narrow catwalk work space, long installation time, etc., so as to avoid repeated bending damage, save installation and removal time, and improve work efficiency. The effect of efficiency

Active Publication Date: 2015-01-14
1ST ENG OF CHINA ZHONGTIE MAJORBRIDGE GROUP +1
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Problems solved by technology

[0003] This construction method will encounter the following problems during construction: the cable strands are prone to twist when they are released from the cable tray; All of them were completed by high-altitude operations on the catwalk, and the conditions for cable extension were poor; the force on the strands was complicated during the traction process. The slidew...

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  • No-catwalk cableway erecting method for main cable strands of suspension bridge
  • No-catwalk cableway erecting method for main cable strands of suspension bridge
  • No-catwalk cableway erecting method for main cable strands of suspension bridge

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0032] see figure 1 Shown, a kind of cableway erection method that the main cable strand of suspension bridge does not have catwalk, comprises the following steps:

[0033] Step S1. Set up a load-bearing traction cable 2 through the bracket 7 between the top of the side pier pier and the top of the adjacent main tower, between the tops of the adjacent main towers, see image 3 As shown, the bracket 7 is provided with a pulley block 71 ; the load-bearing traction cable 2 is supported by the pulley block 71 , and the load-bearing traction cable 2 can move longitudinally between the supports 7 . If the cable saddle is located at the top of the tower, the support 7 is installed on the top of the tower; if the cable saddle is located in the tower, the support 7 is installed on the roof of the saddle room through the embedded parts. The cable sadd...

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Abstract

The invention discloses a no-catwalk cableway erecting method for main cable strands of a suspension bridge and relates to the technical field of mounting and construction of main cables of the suspension bridge. The no-catwalk cableway erecting method includes steps of erecting a bearing traction cable hung with a plurality of cable holders and connected with a traction device; mounting a linear stable cable and a linear counter-drawing device on segments of the bearing traction cable and keeping a linear form of the bearing traction cable above a preset position above a hollow cable linear form of the main cable; stretching the main cable strands in a cable stretching area by a cable stretching plate, and fixing the ends of the stretched main cable strands in a holder at the lower end of the pre-mounted first cable holder; driving the main cable strands along the longitudinal motion of the bridge by the bearing traction cable under the action of the traction device, stretching the main cable strands continuously and stopping until all the main cable strands are completely stretched and longitudinally move the main cable strands to the pre-mounted position; mounting the tower top sections of the main cable strands into saddles, and dragging the main cable strands at the beam ends into anchorage by the cable head traction device.

Description

technical field [0001] The invention relates to the technical field of installation and construction of main cables of suspension bridges, in particular to a cableway erection method for main cable strands of suspension bridges without catwalks. Background technique [0002] At present, the method of erecting the cable strands of self-anchored suspension bridges is to first install catwalks, set up longitudinal slides on the catwalks, install load-bearing cables and traction systems, and then pull the strands along the longitudinal direction of the bridge from one bank to the other. In the process of longitudinal traction on the catwalk, the cable strands are supported at multiple points by the rollers on the catwalk, and must pass through the saddle repeatedly. [0003] This construction method will encounter the following problems during construction: the cable strands are prone to twist when they are released from the cable tray; All of them were completed by high-altitu...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D11/02
CPCE01D21/00
Inventor 王同民李艳哲任文辉代永涛刘校峰杨瑞张跃平刘亮楼
Owner 1ST ENG OF CHINA ZHONGTIE MAJORBRIDGE GROUP
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