Accurate calculation method for anchoring force of anchor cable dynamometer

Abstract

The invention discloses an accurate calculation method for anchoring force of an anchor cable dynamometer. The method comprises the following steps of (1) calculating the modulus correction coefficient of the core line measuring points before the failure of the anchor cable dynamometer; (2) correcting the modulus average value of the remaining core line measuring points after the failure by the modulus correction coefficient; (3) calculating the anchoring force value of anchor cable dynamometer according to the modulus correction value of the remaining core line measuring points. The method calculates the modulus correction coefficient of the core line measuring points before the failure of the anchor cable dynamometer, corrects the modulus average value of the remaining core line measuring points after the failure through the modulus correction coefficient, finally calculates the anchoring force value of the anchor cable dynamometer according to the modulus correction value of the remaining core line measuring points, and solves the problem when failure of part of the core lines in the anchor cable dynamometer is non-metering, the anchoring force of an anchor cable which is more in line with the actual situation can be obtained after the eccentricity of the anchor cable is modified by weighting the modulus arithmetic mean value of the core lines of the remaining intact measuring points.

Description

technical field [0001] The invention relates to the field of anchor cable dynamometers, in particular to an accurate calculation method for the anchoring force of an anchor cable dynamometer. Background technique [0002] The anchor cable dynamometer is a vibrating wire sensor used for long-term monitoring of the prestressed anchorage status of hydraulic structures and other concrete structures, rock slopes, bridges, etc., and can simultaneously measure the temperature of the buried point. Anchor cable dynamometers are evenly distributed with several vibrating wire strain gauges on the force measuring steel cylinder. When the load causes axial deformation of the steel cylinder, the strain gauge and the steel cylinder deform synchronously, and the deformation causes the vibrating wire of the strain gauge to generate The stress changes, thereby changing the vibration frequency of the vibrating wire. The pressure exerted by the anchor cable can be calculated by reading the rea...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: when calculating the anchoring force with no readings for the failure of some core wire measuring points in the anchor cable dynamometer, it is mostly to directly remove the non-reading core wire measuring points and then calculate the arithmetic mean value of the remaining core wire modulus. The problem that the final anchoring force calculation result deviates greatly from the actual value provides an accurate calculation method for the anchoring force of the anchor cable dynamometer, which solves the problem that when some core wire measuring points in the anchor cable dynamometer fail and have no readings, Through the weighted calculation of the arithmetic average value of the core wire modulus of the remaining intact measuring points, the anchoring force of the anchoring cable is calculated after correcting the eccentricity of the anchoring cable, which is more in line with the actual situation

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