基于压电阻抗测量的不规则钢骨混凝土柱界面剥离缺陷检测
Detection of Debonding Defect of Irregular SRC Column Interface Based on PZT Impedance Measurement
摘 要
目前大型不规则多腔钢骨混凝土结构在超高层建筑上的应用日益广泛, 混凝土与钢骨壁间的界面结合状况影响二者的共同工作性能。针对不规则多腔钢骨混凝土柱构件, 模拟了混凝土与钢骨内壁之间的界面剥离缺陷, 在钢骨内壁表面粘贴压电陶瓷片, 采用阻抗仪测量了压电材料与结构构成的机电耦合系统的阻抗值。基于存在界面剥离及健康状态处的压电陶瓷片的阻抗测量结果, 将二者的方均根偏差(ERMSD)作为损伤指标。结果表明, 存在界面剥离以及健康状态处测量所得的压电阻抗曲线有明显变化, 基于压电阻抗测量的损伤指标可实现不规则多腔钢骨混凝土柱内部隐蔽的界面剥离缺陷的有效检测。
钢骨混凝土柱
压电阻抗
剥离损伤
方均根偏差
Health monitoring
SRC column
PZT impedance
Debonding defect
RMSD
Abstract
Large irregular multi-chambers steel reinforced concrete (SRC) structures have been widely employed in super high-rise buildings, and the bonding condition between concrete and steel plate is critical. In this paper, the interfacial debonding defect between concrete and steel plate in a complex multi-chamber SRC column is mimicked artificially. With PZT patches surface-bonded on steel plate, the impedance of electromechanical coupled system composed by piezoelectric material and structure is measured. The measurement results of PZT patches in both debonding areas and healthy areas of the interface are compared, and the root mean square deviation (ERMSD) is defined as a damage index to describe the bonding condition of the interface. Results show the figures of PZT impedance in interface debonding areas are quite different from those in healthy areas and PZT impedance measurement based damage index can effectively detect the inaccessible interface debonding defects.
中图分类号 TN384 TG115.28 DOI 10.11973/wsjc201609008
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51278185); 高等学校博士学科点专项科研基金资助项目(20120161110023)
收稿日期 2016/1/14
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联系人作者许斌(binxu@hnu.edu.cn)
备注许 斌(1972-), 男, 教授, 博士, 主要从事结构工程和防灾减灾方面研究工作。
引用该论文: XU Bin,LI Jun,LI Yan-he,SHU Zhi-fang. Detection of Debonding Defect of Irregular SRC Column Interface Based on PZT Impedance Measurement[J]. Nondestructive Testing, 2016, 38(9): 29～32
许 斌,李 俊,李彦贺,舒志方. 基于压电阻抗测量的不规则钢骨混凝土柱界面剥离缺陷检测[J]. 无损检测, 2016, 38(9): 29～32
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参考文献
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【2】孙威.利用压电陶瓷的智能混凝土结构健康监测技术［D］.大连: 大连理工大学, 2009.
【3】焦莉, 李宏男.PZT的EMI技术在土木工程健康监测中的研究进展［J］.防灾减灾工程学报, 2006,26(1): 102-108.
【4】XU B,LI B,SONG G. Active debonding detection for large rectangular CFSTs based on wavelet packet energy spectrum with piezoceramics［J］. ASCE Journal of Structural Engineering, 2013,139(9):1435-1443.
【5】XU B, ZHANG T, SONG G, et al. Active interface debonding detection of a concrete-filled steel tube with PZT techniques using wavelet packet analysis［J］. Mechanical Systems and Signal Processing, 2013,36(1):7-17.
【6】蔡萍, 许斌, 周宇.基于外贴压电材料的钢管混凝土界面缺陷检测［J］.压电与声光, 2015,37(2):337-341.
【7】许斌, 蔡萍, 周宇, 等.基于嵌入压电技术的钢管核心混凝土缺陷检测［J］.压电与声光, 2015,37(3):489-496.
【8】许斌, 陈梦琦, 王海东, 等.基于压电阻抗的钢管砼柱横隔板剥离缺陷检测［J］.压电与声光, 2015,37(1):172-175.
【9】许斌, 陈梦琦, 余地华, 等.基于压电阻抗的钢管混凝土柱界面缺陷检测研究［J］.施工技术, 2015,44(11):117-121.
【10】LIANG C, SUN F P, ROGERS C A. Coupled electro-mechanical analysis of adaptive material systems-determination of the actuator power consumption and system energy transfer［J］. Journal of Intelligent Material Systems and Structures, 1994,5(1):12-20.
【11】RAJU V. Implementing Impedance-Based Health Monitoring［D］. Blacksburg Virginia: Faculty of Virginia Polytechnic Institute and State University,1997.
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