基于嵌入压电技术的钢管核心混凝土缺陷检测-researchgate.pdf

See discussions, stats, and author profiles for this publication at: /publication/283770110 Experimental study on defect detection of concrete core of concrete-filled steel tubular with embedded PZT Article in Yadian Yu Shengguang/ iezoelectrics and Acoustooptics · June 2015 CITATIONS READS 0 26 4 authors, including: Bin Xu National Huaqiao University 178 UBLICATIONS 740 CITATIONS SEE ROFILE Some of the authors of this publication are also working on these related projects: Study on Behavior and Optimization of a Novel restressed Concrete-Steel Hybrid Wind Turbine Supporting Structural System View project Data-based nonlienar restoring force identification for high-rise building structures View project All content following this page was uploaded by Bin Xu on 16 May 2016. The user has requested enhancement of the downloaded file. 基于嵌入压电技术的钢管核心混凝土缺陷检测 1 1 2 3 许斌 ，蔡萍 ，周宇 ,黄清 1 湖南大学土木工程学院，长沙，湖南，中国410082 2 中建一局集团建设发展有限公司华南分公司，广州，广东，中国511475 3 中信建筑设计研究总院有限公司，武汉，湖北，中国，430014 摘要：钢管混凝土构件核心混凝土缺陷影响到其延性和承载力。利用自制的嵌入式压电功能元，本文提出了基于压 电陶瓷应力波测量与分析的核心混凝土缺陷监测方法。通过对比不同状态简谐激励下测量信号幅值和扫频激励下小波包能 量的差异，定义了基于测量信号幅值和小波包能量的损伤指标。结果表明，利用所提出的嵌入式压电技术和所定义的损伤 指标，有效地识别了钢管混凝土构件的核心混凝土损伤，损伤指标对损伤程度敏感。 关键词：压电陶瓷；嵌入式压电功能元；核心混凝土损伤；应力波传播法；小波包能量 中图分类号： TN384 文献标识码：A Experimental Study on Defect Detection of Concrete Core of Concrete-Filled Steel Tubular with Embedded PZT 1 1 2 3 Xu Bin , Cai Ping , Zhou Yu , Huang Qing 1 College of Civil En