|Table of Contents|

Experiment on Void Area Testing of Concrete-filled Steel Tube Based on Ultrasonic Testing Method(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2012年02期
Page:
102-110
Research Field:
Publishing date:

Info

Title:
Experiment on Void Area Testing of Concrete-filled Steel Tube Based on Ultrasonic Testing Method
Author(s):
TAN Yong-jie1;  XU Bo2;  WU Zhi-min1;  HE Hua-nan1
1. School of Civil Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. Dalian Construction Engineering Quality Supervision Station, Dalian 116012, Liaoning, China
Keywords:
concrete-filled steel tube;  void area;  quantitative testing;  ultrasonic testing method;  propagation path;  chromatogram
PACS:
TU317
DOI:
-
Abstract:
Four possible propagation paths in the disengaging by ultrasonic testing method for void area of concrete-filled steel tube were analyzed, and the theoretical calculation formulae of ultrasonic travel time for four propagation paths were given. From the comparisons between the experimental values and the theoretical values, the real propagation paths in the two kinds of disengaging were obtained, which provided the conditions for the quantitative test of the disengaging. With the interpolation function from MATLAB, matrix of ultrasonic travel time of the disengaging would be disposed, and the disengaging of the concrete-filled steel tube was got. Then the chromatogram of ultrasonic travel time distribution was drawn and it could be used for quantitative analysis. Finally, the applicable range of the central angle with the ultrasonic testing method was proposed. Results show that the chromatogram of ultrasonic travel time distribution based on ultrasonic testing method can reach the purposes of quantitative detection defects and can meet accuracy requirements of the project.

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Last Update: 2012-06-20