Method for measuring internal force of guy cable in active service and measuring device using same

A measuring method and technology of measuring device, applied in tension measurement and other directions, can solve the problems affecting the calculation accuracy of cable force, etc., and achieve the effects of fast measurement speed, high measurement accuracy, and improved measurement accuracy

Active Publication Date: 2009-09-16
GUANGZHOU CONSTR ENG +1
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  • Abstract
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Problems solved by technology

Therefore, the frequency method is almost the best choice when measuring the cable force of the cable that has been constructed, but the accuracy of the cable force determined by the frequency method depends to a large extent on the reliability of the

Method used

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  • Method for measuring internal force of guy cable in active service and measuring device using same
  • Method for measuring internal force of guy cable in active service and measuring device using same
  • Method for measuring internal force of guy cable in active service and measuring device using same

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Embodiment Construction

[0022] An embodiment of a method for measuring the internal force of a cable in service of the present invention is introduced below. The method includes the following steps: (1) select two points on the cable to be measured, and fix the two points so that the distance between the two points (2) Select a point on the cable section to be tested between the two points, lift up the point by a height δ, measure the height δ and the required height for jacking up the height Jacking force N; (3) According to the height δ, the jacking force N and the distance L between the two points, using the stress stiffening effect of the cable and the principle of static force balance, more specifically, according to the formula T = N sin ( δ / L 1 ) + [ ...

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Abstract

The invention provides a method for measuring internal force of a guy cable in active service, which comprises the following steps: selecting two points on a guy cable to be measured, and fixing the two points so that a cable section to be measured between the two points is formed into a string pattern; selecting a point on the cable section to be measured between the two points, jacking a height at the point, and measuring the height and the jacking force required for jacking the height; and according to the height, the jacking force and the distance between the two points, using the stress rigidization effect of the guy cable and a principle of statical equilibrium to evaluate the internal force of cable section to be measured. The method has the advantages of convenient measurement, high precision and low measuring cost. The invention also provides a measuring device using the method.

Description

technical field [0001] The invention relates to a measuring method and a measuring device for the internal force of a cable, in particular to a measuring method and a measuring device for the internal force of a cable in service. Background technique [0002] Modern architecture constantly puts forward new standards and requirements for building functions. The scale, system, type, structure, and materials of building structures are constantly developing with changes in functions. Various cable-stayed bridges, suspension bridges, suspension structures, and cable-membrane structures Isotonic structures continue to emerge and develop. Due to various construction errors and accidental factors, the internal force and shape of the structure after completion often deviate from the design state, and various environmental effects during the service period often cause the internal force and shape of the structure in service to deviate from the design state. Tensile structures are gen...

Claims

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Application Information

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IPC IPC(8): G01L5/04
Inventor 刘金刚王龙谢庆华谢伟锋冯伟
Owner GUANGZHOU CONSTR ENG
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