压电混凝土结构健康监测系统的开发与应用

基于压电陶瓷传感器的混凝土结构裂缝损伤监测技术已取得了丰硕成果。但该项技术目前还未能广泛用于实际工程，缺乏相应的监测系统开发是其主要原因之一。该文以基于压电陶瓷传感器的波动法主动健康监测技术为理论基础，结合混凝土结构裂缝损伤监测特点，利用虚拟仪器技术开发了一套便携式压电混凝土结构裂缝损伤健康监测系统。通过荷载作用下的混凝土梁的损伤监测试验完成了对系统的测试，并将该系统应用到实际工程中。结果表明，该系统运行稳定可靠，可实时在线地对混凝土结构的不同裂缝损伤状态作出识别，并进行声光预警。

Development and Application of Health Monitoring System for Piezoceramic Concrete Structure

The concrete structure crack damage detection technology based on piezoelectric ceramic sensors has been achieved a great development today. However, the technique has not widely been used so far in the practical engineering, and the lack of the corresponding monitoring system development is one of the main reasons. In this paper, based on the features of concrete structure crack damage monitoring and using the PZT wave based method as the theoretical foundation, a portable health monitoring system for piezoceramic concrete structure has been developed by using the virtual instrument technology. The system test has been carried out through the concrete beam damage monitoring experiment at the condition of loading and the proposed system has been applied to the practical engineering. The results have been showed that the system has been operated stably and reliably. The different states of concrete structure crack damage can be identified in real time online and the system has the functions of sound and light warning.