Method for detecting quality of concrete-filled steel tubular column through ultrasonic waves

Abstract

The invention relates to a method for detecting the quality of a concrete-filled steel tubular column through ultrasonic waves. An ultrasonic detector is used for detecting the quality of the concrete-filled steel tubular column, and an ultrasonic generator and an ultrasonic receiver of the ultrasonic detector are respectively arranged on both sides of the concrete-filled steel tubular column to be detected. The method for detecting the quality of the concrete-filled steel tubular column through the ultrasonic waves comprises the following steps of: transmitting and receiving the ultrasonic waves, wherein the ultrasonic generator transmits the ultrasonic waves, and the ultrasonic wave receiver receives the ultrasonic waves transmitted by the ultrasonic generator and passing through the concrete-filled steel tubular column; carrying out filtering processing on ultrasonic signals received; carrying out HHT conversion on the ultrasonic signals subjected to the filtering processing, namely carrying out empirical mode decomposition and Hilbert spectrum analysis; and detecting the quality of the concrete-filled steel tubular column according to the ultrasonic signals subjected to the HHT conversion.

Description

technical field [0001] The invention relates to a quality detection method and detection system of an ultrasonic concrete-filled steel tube column, in particular to a quality detection method and detection system of an ultrasonic concrete-filled steel tube column through filtering processing and HHT transformation. Background technique [0002] The traditional ultrasonic detection methods mainly include: first wave acoustic time method, first wave amplitude method, waveform identification method and first wave frequency method. The first-wave acoustic time method is often used in engineering, and the pouring quality of CFST is evaluated by comprehensively considering the first-wave amplitude, first-wave waveform and first-wave frequency. The actual test results show that when the quality of concrete filled steel tube is tested, the ultrasonic signal measured by ultrasonic testing often contains noise signals and waveform distortion, which leads to the indiscernibility of the...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an ultrasonic concrete-filled steel tube column quality detection method and an ultrasonic concrete-filled steel tube concrete column quality detection system, which overcome the disadvantages of the prior art that the first wave sound is difficult to interpret, and the waveform is affected by noise signals so that the characteristics are not obvious

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