Detection device and method for service bridge inhaul cable/suspension cable anchor system

Abstract

The invention discloses detection device and method for a service bridge inhaul cable / suspension cable anchor system. The device comprises a detection circuit which is mainly formed by an ultrasonic generation and excitation part, a piezoelectric transducer (6) and a signal collector (7), and a detection mechanism which is mainly formed by a first clamp for fixing an inhaul cable / suspension cable of an anchor system, a second clamp for connecting a transmitting probe and the piezoelectric transducer with the anchor system through a coupling agent (2), and a PC machine. The method comprises the steps as follows: a transmitter obtains working voltage from alternating current through an adjustable transformer and a direct-current rectifier module; the transmitting probe generates an ultrasonic wave under excitation of the voltage, and is introduced into the inhaul cable / suspension cable in an anchor area through the coupling agent; the piezoelectric transducer transforms an ultrasonic wave reflected by the anchor area into a corresponding electric signal; the electric signal is processed and analyzed in the PC machine, so as to obtain defect information of the anchor system. The detection device and method have the advantages of being good in stability, high in detection sensitivity, low in cost, convenient to use and the like.

Description

technical field [0001] The invention belongs to the field of non-destructive detection of pull / sling anchorage systems of service bridges, and in particular relates to a detection device and method for pull / sling anchorage systems of service bridges based on ultrasonic waves. Background technique [0002] Most of the suspension bridges built recently adopt prestressed anchorage system. The prestressed anchorage system is composed of prestressed and cable strand connectors. The main cable strands are connected to the prestressed tendons through the connectors to transmit the force to the anchor block. The material of the bridge pull / sling is generally high-strength steel bar, steel wire or steel strand. At present, the commonly used cable bodies at home and abroad are parallel steel strand leads and parallel steel wire cables. The common defects of pull / sling anchorage system are corrosion, cracks, broken wires, etc. The main defect is corrosion, which directly affects the r...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a stable , strong penetrating ability, accurate defect location, high detection sensitivity, low cost, convenient use, fast speed, and harmless to the human body, the detection device and method of the pull / sling anchorage system of the bridge in service

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