Bridge cable damage electric detecting device and detecting method

Abstract

The invention discloses a bridge cable damage electric detecting device and a bridge cable damage electric detecting method. The detecting device comprises a voltage regulating module, a voltage output guide wire, a current detector, a current amplifying module, a resistance calculating module, a resistance comparing module and a damage rate calculating module; the detecting method comprises the following steps: A, generating and detecting current; B, calculating the resistance; C, comparing the resistance; and D, calculating the damage rate. The resistance value is measured and calculated electrically, the area change value is determined according to the difference value between the measured resistance value and the theoretical resistance value, the detecting principle is simple; during specific detection, the voltage is only loaded to the two ends of the cable, so that only the current on the cable is needed to be measured; the specific operation steps are simple, during the measured result treatment, the measured current is amplified through a current amplifier for calculating the size of the resistance and amplifying the current value, so that the precise current value can be obtained, the calculating errors are small, and the calculated resistance value is relatively precise.

Description

technical field [0001] The invention relates to the technical field of bridge damage detection, in particular to a bridge cable damage electrical detection device and a detection method. Background technique [0002] The cable bridge is a new type of bridge that appeared after World War II. Due to its beautiful appearance, convenient construction and low cost, it has become the main bridge type of long-span bridges. A large number of cable bridges have been built in my country, and in the past 10 years there have been more than More than 20 cable bridges with a span of more than 400m have been built one after another, and a number of cable bridges with world-leading spans are under construction or in preparation. The cable structure system is the main load-bearing component of long-span bridges. The normal use and overall safety of the bridge are extremely important. Since the cable structure system is the lifeline of the cable-bearing bridge, once disease and deterioration oc...

AI Technical Summary

Problems solved by technology

The detection of cable bridge damage is a very necessary work. The monitoring devices currently used are very complicated, the operation is relatively difficult, and the detection results have large errors.

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