Method for arranging parallel steel wire stay cable

An installation method and cable-stayed technology, which is applied in the direction of erecting/assembling bridges, bridge parts, bridges, etc., can solve problems such as low construction efficiency, long construction period, and great influence on bridge alignment, so as to prevent accidents caused by falling cables and facilitate the construction process , The effect of personnel operation safety

Active Publication Date: 2011-11-23
HUNAN ROAD & BRIDGE CONSTR GROUP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The hanger generally has a large tonnage, which has a great impact on the alignment of the bridge, construction monitoring is difficult, construction efficiency is low, the construction period is long, and personnel are exposed to dangerous working surfaces for a long time

Method used

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  • Method for arranging parallel steel wire stay cable
  • Method for arranging parallel steel wire stay cable

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Embodiment Construction

[0019] The installation method of parallel steel wire stay cable of the present invention is referring to accompanying drawing, carries out according to the following steps:

[0020] 1. Spread the stay cables on the bridge deck;

[0021] 2. Install the anchor head 9 at the tower end of the stay cable;

[0022] 3. Arrange the planetary jack 1, the planetary jack support 2 and the tower end anchor nut 3 of the stay cable vertically and centrally on the anchor plate 4 provided at the inner side of the cable guide 5 on the wall of the cable tower 14;

[0023] 4. Determine the length of the traction steel strand 6 according to the traction force required to pull the stay cable 13 to the cap on the tower end anchor head 9 according to the pre-calculated stay cable 13 under the condition that the tower end anchor head 9 is installed And the number of roots, the traction steel strand 6 is connected to the tower end anchor head 9 of the stay cable through the pressure sleeve 7, the P ...

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Abstract

The invention discloses a method for arranging a parallel steel wire stay cable, which comprises the following steps of: 1) arranging a tower end anchor head at the end of the stay cable; 2) arranging a planetary jack and a tower end anchor head nut of the stay cable on an anchor backing plate which is arranged at the pipe orifice of a cable guide pipe on the inner side of the wall of a cable bent tower; 3) lengthening a pulling steel stranded wire meeting the requirement at the tower end anchor head of the stay cable; 4) hoisting the tower end anchor head of the stay cable to a position nearby the pipe orifice of the cable guide pipe on the outer side of the wall of the cable bent tower by using a hoisting machine on the top of the cable bent tower; 5) pulling the end of the pulling steel stranded wire to pass through the cable guide pipe and anchoring on the planetary jack; and 6) pulling the pulling steel stranded wire by using the planetary jack, pulling part of the tower end anchor head of the stay cable to exceed the anchor backing plate and screwing the tower end anchor head nut of the stay cable at the tower end anchor head so as to cap the tower head anchor head. The method can effectively avoid the sling accidents of the stay cable, makes the whole construction process convenient and quick and contributes to the linear control of bridges.

Description

technical field [0001] The invention belongs to bridge construction methods, in particular to a method for installing parallel steel wire stay cables. Background technique [0002] At present, in the installation and construction of parallel steel wire stay cables, there are mainly traction installation methods of combination of soft and hard traction at the tower end of soft traction and hard traction and traction installation mode of combination of soft and hard at the beam end of soft traction and hard traction. [0003] The first installation method uses continuous jacks plus steel strands and rigid tension rods of different lengths to pull and then stretch the construction method: this construction method first uses a jack with a smaller tonnage to pass the steel strands to the ends of the rigid tension rods. Pull out the anchor plate, cap the end of the tension rod with the split nut, then convert the jack with a smaller tonnage into a cable tension jack, use the cable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D19/16
Inventor 欧阳钢陈明宪刘玉兰颜江平黄继军万华刘武
Owner HUNAN ROAD & BRIDGE CONSTR GROUP
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