Method and system for measuring cable force of stainless steel cable

Abstract

The invention provides a method and a system for measuring a cable force of a stainless steel cable, and relates to the technical field of stress measurement. The method comprises the steps of: replacing at least one stainless steel wire forming a prestressed cable with a carbon steel wire with magnetic conductivity; and arranging a magnetic flux sensor on the outer side of the detected prestressed steel cable for measuring the corresponding magnetic field physical quantity so as to obtain a cable force value of the prestressed steel cable. The system comprises the detected prestressed steel cable and the magnetic flux sensor, wherein the prestressed steel cable contains the carbon steel wire with magnetic conductivity, and the magnetic flux sensor is arranged on the outer side of the detected prestressed steel cable and used for measuring the corresponding magnetic field physical quantity. The method and the system solve the problem of application of the magnetic flux method in the stainless steel cable, greatly optimize the measurement problem of the stainless steel cable, and greatly reduce the cable force measurement cost of the stainless steel cable.

Description

technical field [0001] The invention relates to the technical field of stress measurement, in particular to a method and system for measuring the cable force of a stainless steel cable. Background technique [0002] With the development of modern construction industry, as a green, low-carbon building component-prestressed steel cable component, it is widely used in large bridges, In airport waiting halls, terminal buildings, high-speed rail stations and large commercial buildings. Because of the above characteristics, prestressed steel cables generally play an important role in the above-mentioned building structures, such as the prestressed cable-stayed bridge connecting the tower column and the bridge body through prestressed steel cables, it can be said that the prestressed steel cables can bear almost 60 The importance of -80% dead load of the bridge body and the loads of vehicles and pedestrians walking on it can be imagined. Because of its important "position" in the...

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Problems solved by technology

[0009] In view of this, one of the purposes of the present invention is to provide a method for measuring the cable force of a stainless steel cable to solve the problem that in the prior art, the magnetic flux method is used to measure the cable force of the prestressed cable, and the detected cable force does not have certain magnetic permeability. Can, lead to the technical problem that the change of the stress of the steel cable will not cause the change of the physical quantity of the external magnetic field

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