基于压电阻抗技术的混凝土剪力墙裂缝损伤监测  

Research on the crack damage monitoring for concrete shear wall based on impedance technology

作　　者：孙威[1] 阎石[1] 张莺[2] 吴金国[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]沈阳农业大学高职学院,辽宁沈阳110122

出　　处：《混凝土》2011年第7期125-128,共4页Concrete

基　　金：沈阳建筑大学省级重点实验室开放基金项目(JG2009-08);沈阳建筑大学青年基金(2010104)

摘　　要：简要阐述了基于压电阻抗法的结构损伤监测技术基本原理,指出了该项技术的优点。结合压电阻抗法及混凝土结构的特点,提出了针对混凝土裂缝损伤监测的传感器布置策略。最后,利用有限元软件对基于压电阻抗技术的混凝土裂缝损伤监测技术进行数值模拟研究。在研究中,建立了黏贴有压电陶瓷传感器列阵的混凝土剪力墙模型,模拟了墙体由健康状态逐渐向失效状态发展的4个阶段。研究结果显示,传感器列阵能够很好地对混凝土剪力墙损伤及其发展情况进行监测。对损伤的定量分析和定位分析结果也与实际情况相吻合。The basic principle of structure health monitoring technology based on impedance method was stated simply and its characters were still pointed out.A strategy of transducers placement for the monitoring of concrete crack was proposed according to the characters of impedance method and concrete structure.At last, a numerical simulation research about the concrete shear wall crack monitoring based on impedance method was hold by finite element analysis software.In research, a model of concrete shear wall with piezoceramics transducers array was constructed and the four stages form health stage to failure stage was simulated.The results had shown that transducers array could monitor the development of crack damage well.The result of quantitative and location analysis for the damage was agree with the practical situation.

关 键 词：压电陶瓷 传感器列阵 阻抗法 混凝土剪力墙 裂缝损伤监测 

分 类 号：TU528.01[建筑科学—建筑技术科学]