基于GPR和PAUT的混凝土叠合板无损检测方法研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (20) : 318-324.

论文

基于GPR和PAUT的混凝土叠合板无损检测方法研究

孙兆霖，杨璐，马跃飞，柳美玉

作者信息 +

A non-destructive testing method of concrete composite slabs based on GPR and PAUT

SUN Zhaolin, YANG Lu, MA Yuefei, LIU Meiyu

Author information +

文章历史 +

摘要

针对混凝土叠合板结合面缺陷难以检测的问题，提出了一种探地雷达(GPR)和相控阵超声检测(PAUT)相结合的无损检测方法。为了验证该方法的适用性和有效性，同时考虑钢筋对于检测方法的影响，共设计制作了两块混凝土叠合板，分别为单层配筋叠合板和双层配筋桁架叠合板；在结合面上，共设置了三种类型的人工缺陷，分别为分层、脱空和杂物（木模板和PVC管等）。检测结果表明，该方法可以有效地检测出所有的缺陷类型，缺陷定位准确，检测缺陷大小的相对误差基本在20%以下，两个试件的检测平均误差分别为8%和6.6%；检测缺陷深度的相对误差基本在10%以下，两个试件的检测平均误差分别为4.3%和4.8%。本文提出的方法是检测混凝土叠合板结合面缺陷有效且较为准确的方法。

Abstract

A nondestructive testing method combining ground-penetrating radar (GPR) and phased-array ultrasonic testing (PAUT) was proposed to address the difficulty of detecting defects on the bonding surface of concrete composite slabs. In order to verify the validity of the method, and to study the influence of reinforcement on the detection method, a single-layer reinforced composite slab and a double-layer reinforced truss composite slab were designed and fabricated. On the bonding surface, three types of artificial defects were set: delamination, voids and debris. The detection results showed that the method can effectively detect all defect types with accurate defect localization. The relative errors of detecting the size of defects were below 20%, and the average errors of detecting two specimens were 8% and 6.6%, respectively; the relative errors of detecting the depth of defects were below 10%, and the average errors of detecting two specimens were 4.3% and 4.8%, respectively. This method is an effective and accurate method for detecting defects in the bond surface of concrete composite slabs.

导出引用

孙兆霖, 杨璐, 马跃飞, 柳美玉. 基于GPR和PAUT的混凝土叠合板无损检测方法研究[J]. 振动与冲击, 2024, 43(20): 318-324

SUN Zhaolin, YANG Lu, MA Yuefei, LIU Meiyu. A non-destructive testing method of concrete composite slabs based on GPR and PAUT[J]. Journal of Vibration and Shock, 2024, 43(20): 318-324

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