RESEARCH ON NONDESTRUCTIVE TESTING OF CFST BY ULTRASONIC TOMOGRAPHY

LIU Yang; SHAO Zhiwei; ZHANG Huijie; ZHAO Weitao; ZHANG Lei; CHA Xiaoxiong

doi:10.13204/j.gyjzG21020313

Volume 51 Issue 10

Feb. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2021 > 51(10): 189-200

LIU Yang, SHAO Zhiwei, ZHANG Huijie, ZHAO Weitao, ZHANG Lei, CHA Xiaoxiong. RESEARCH ON NONDESTRUCTIVE TESTING OF CFST BY ULTRASONIC TOMOGRAPHY[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 189-200. doi: 10.13204/j.gyjzG21020313

Citation:

LIU Yang, SHAO Zhiwei, ZHANG Huijie, ZHAO Weitao, ZHANG Lei, CHA Xiaoxiong. RESEARCH ON NONDESTRUCTIVE TESTING OF CFST BY ULTRASONIC TOMOGRAPHY[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 189-200. doi: 10.13204/j.gyjzG21020313

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RESEARCH ON NONDESTRUCTIVE TESTING OF CFST BY ULTRASONIC TOMOGRAPHY

doi: 10.13204/j.gyjzG21020313

1. Shenzhen Construction Engineering Group Co., Ltd., Shenzhen 518057, China;
2. School of Civil and Environmental Engineering, Harbin Institute of Technology(Shenzhen), Shenzhen 518055, China

Received Date: 2021-02-03
Available Online: 2022-02-21

Abstract

Abstract

In order to study the effectiveness of ultrasonic tomography in nondestructive testing of the compactness of concrete-filled steel tubes, the location and size of concrete defects in the pipe were qualitatively analyzed and quantitatively judged from three aspects of theoretical research, finite element simulation and test. The results showed that:when the concrete in the pipe had defects, the acoustic propagation path would be changed. The quantitative calculation method was given which was lower than the percentage of the average value of the sound velocity of the section. ABAQUS could directly reflect the propagation direction of the sound waves. It was concluded that sound waves traveled along the shortest path, which was consistent with the theoretical results. In the test, the ultrasonic tomography could be used to identify the preset defects. The results of stheoretical calculation, finite element simulation and test showed that the average value of section sound velocity decreased with the increase of defect body, and the minimum value of sound velocity of the section decreased with the increase of defect body.
- concrete-filled steel tube,
- ultrasonic tomography,
- nondestructive testing

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References

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