超声法检测预制构件混凝土内部缺陷的试验研究  

Experimental Research on Ultrasonic Method for Detecting Internal Defects of Precast Concrete

作　　者：许鑫浩 徐福泉[2] 刘英利 代伟明[2] 毛诗洋 XU Xinhao;XU Fuquan;LIU Yingli;DAI Weiming;MAO Shiyang(College qf Civil Engineering,North China University of Science and Technology,Tangshan,Hebei 063210,China;CABR Technology Co.,Ltd.,Beijing 100013,China;China Academy of Building Research,Beijing 100013,China)

机构地区：[1]华北理工大学建筑工程学院,河北唐山063210 [2]建研科技股份有限公司,北京100013 [3]中国建筑科学研究院有限公司,北京100013

出　　处：《施工技术》2021年第4期9-11,共3页Construction Technology

基　　金：国家重点研发计划:工业化建筑检测与评价关键技术(2016YFC0701800)。

摘　　要：目前混凝土内部缺陷超声检测法主要有传统超声检测法与相控阵列超声检测法。设计制作2组不同缺陷的钢筋混凝土试件,分别采用两种超声法进行对比试验研究。结果表明,阵列超声检测比传统超声检测对混凝土内部空洞检测精度更高;钢筋加密区内部空洞缺陷检测时,钢筋加密区比非加密区检测结果受影响更为明显,且由于钢筋对超声波的干扰,采集到的数据与实际内部情况不完全相符。At present,there are mainly two kinds of ultrasonic detection methods for concrete internal defects,which are traditional ultrasonic detection method and phased array ultrasonic detection method.Two groups of reinforced concrete specimens with different defects were designed and fabricated,and two kinds of ultrasonic methods were used for comparative test.The results show that array ultrasonic testing is more accurate than traditional ultrasonic testing for the detection of concrete inner cavity.In the detection of cavity defects in reinforced area,the detection results of reinforced area are affected more obviously than those of non-reinforced area,and the collected data are not completely consistent with the actual internal situation due to the interference of reinforcement for ultrasonic waves.

关 键 词：装配式建筑 相控阵列超声 内部缺陷 空洞 检测 

分 类 号：TU375[建筑科学—结构工程] TU746.2