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Method for measuring and controlling internal steel wire length error of main cable bundle for suspension bridge

A technology of length error and internal steel wire, which is applied in bridges, bridge parts, bridge construction, etc., can solve the problems of inability to control the length error of a single steel wire, uneven force, and failure of the main cable strands to meet the design life and load requirements.

Active Publication Date: 2008-10-01
JIANGSU FASTEN STEEL CABLE CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This marking method can only be used to control the length of the main cable strands of the suspension bridge, but cannot control the length error of a single steel wire in the main cable strands of the suspension bridge
This will lead to uneven stress on the main cable strands of the suspension bridge due to the different lengths of the steel wires in the strands during use, so that the main cable strands cannot meet the design life and load requirements

Method used

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  • Method for measuring and controlling internal steel wire length error of main cable bundle for suspension bridge
  • Method for measuring and controlling internal steel wire length error of main cable bundle for suspension bridge

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Embodiment Construction

[0008] see figure 1 , in order to measure and control the method for the length error of the internal steel wires of the main cable strands of the suspension bridge, the present invention has produced 10 internal error control steel wires 3, which are evenly distributed on the outer periphery of the strands together with the original standard wires 1 and marking wires 2, To detect the length accuracy of steel wires in different parts during the strand making process.

[0009] see figure 2 , the total length of the error control steel wire in the strand is divided into seven segmental lengths (there are three in the figure), and a mark 4 is made on every other segment of the error control steel wire in each strand. The starting point of the steel wire is aligned. In the process of cable making, with the standard wire as the reference, measure the deviation between the 10 internal error control steel wires and it, which is the length accuracy error of a single steel wire in th...

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Abstract

The invention discloses a method for measuring and control the length error of steel wire of main cable beam of suspension bridge, which is characterized in that: preparing several error control steel wire, with former standard wires, to be distributed around the beam; dividing the error control steel wire into several segments, while each segment is marked; aligning the starts of error control steel wires; in the preparation, using standard wire as standard to measure the departure amount between each error control steel wire and the standard wire as the length error; according to the measure resulted, analyzing the segment length; and controlling the length error via adjusting the tension of steel wire. The invention can control the length of main cable beam and control the length error of each steel wire.

Description

Technical field: [0001] The invention relates to a method for measuring and controlling the length error of the steel wire inside the main cable strand of a suspension bridge, which is mainly used for measuring and controlling the length error of the steel wire inside the main cable strand of the suspension bridge. It belongs to the technical field of bridge construction. Background technique: [0002] Before the present invention was made, in order to control the length of the main cable strands of the suspension bridge, a standard wire and a marking wire were usually arranged on the corners of the hexagonal main cable strands in section. This marking method can only be used to control the length of the main cable strands of the suspension bridge, but cannot control the length error of a single steel wire in the main cable strands of the suspension bridge. This will lead to uneven stress on the main cable strands of the suspension bridge due to the different lengths of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/16
Inventor 赵军宁世伟薛花娟
Owner JIANGSU FASTEN STEEL CABLE CO LTD
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