矩形钢管砼截面内缺陷对不同路径波动测量的影响  

Effect of Internal Defects in the Cross Section of Concrete-Filled Rectangular Steel Tubes on Stress Wave Measurement Along Different Path

作　　者：柯钧豪 罗晓生 张国文 许云鹏 王江[1,3] 许斌[1,3] 夏颂[4] KE Junhao;LUO Xiaosheng;ZHANG Guowen;XU Yunpeng;WANG Jiang;XU Bin;XIA Song(College of Civil Engineering,Huaqiao University,Xiamen 361021,China;Shenzhen Branch,The First Construction Engineering Company Ltd,China Construction Second Engineering Bureau,Shenzhen 518003,China;Key Lab.for Intelligent Infrastructure and Monitoring of Fujian Province,Huaqiao University,Xiamen 361021,China;Faculty of Electronic and Information Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]中建二局第一建筑工程有限公司,广东深圳518003 [3]福建省智慧基础设施与监测重点实验室(华侨大学),福建厦门361021 [4]西安交通大学电子与信息学部电子科学与工程学院,陕西西安710049

出　　处：《压电与声光》2022年第6期990-997,共8页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(51878305)。

摘　　要：钢管混凝土结构在超高层建筑中的应用日益广泛,由于施工质量控制不到位及混凝土材料收缩等原因,其内部可能出现核心混凝土空洞缺陷及混凝土与钢管壁间的界面剥离缺陷,进而对其力学性能带来负面影响。该文针对矩形钢管混凝土截面的缺陷检测,在表面粘贴压电陶瓷片进行测量,对这两种内部缺陷在不同测试路径上压电陶瓷片响应的影响进行试验和数值模拟分析。通过对健康、存在核心混凝土空洞和界面剥离缺陷的不同试件不同检测路径上压电传感器输出信号的比较,研究了缺陷对应力波传播的影响,并得到采用对测方式检测的敏感范围。结果表明采用对测方法可有效检测钢管混凝土缺陷,其敏感范围的确定具有工程意义。The concrete-filled steel tubes(CFST) structures are increasingly widely used in super high-rise buildings. Due to inadequate construction quality control and the shrinkage of concrete materials, the mechanical behavior is negatively affected by the possible concrete core defect and the interface debonding between the concrete and the steel tube. In this paper, for the purpose of detecting the defects in CFST, the piezoelectric ceramic plate is mounted on the surface for measurement, and the influences of these two internal defects on the responses of the piezoelectric ceramic plate on different test paths are tested and numerically simulated. By comparing the output signals of the piezoelectric sensors on different detection paths of different specimen that are healthy and have concrete core defect and interface debonding defect, the effects of the defects on the stress wave propagation are investigated and the sensing range of detection with the patch and catch method is obtained. The results show that the proposed method can effectively detect the effects of the concrete-filled steel tube, and the determination of the sensing range provides a reference for the sensor arrangement in engineering application.

关 键 词：钢管混凝土结构 界面剥离 核心混凝土缺陷 无损检测 压电陶瓷 敏感范围 

分 类 号：TN384[电子电信—物理电子学]