Smart PZT-interface for SHM in tendon-anchorage of cable-stayed bridge

Khac-Duy Nguyen; Po-Young Lee; Jeong-Tae Kim

doi:10.1117/12.917538

3 April 2012 Smart PZT-interface for SHM in tendon-anchorage of cable-stayed bridge

Khac-Duy Nguyen, Po-Young Lee, Jeong-Tae Kim

Proceedings Volume 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012; 834519 (2012) https://doi.org/10.1117/12.917538
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

For the safety of cable-stayed bridges, it is very important to ensure the tensile forces of cables. The loss of cable force could significantly reduce load carrying capacity of the structure and even results in structural collapse. This study presents a smart PZT-interface associated with wireless sensing device for tendon force-loss monitoring in cable-stayed bridge. The following approaches are carried out to achieve the objective. Firstly, a smart PZT-interface is designed to monitor the cable force-loss by using electromechanical impedance-based method. Secondly, wireless impedance sensor node is designed for impedance monitoring. The sensor node is mounted on the high-performance Imote2 sensor platform to fulfill high operating speed, low power requirement and large storage memory. Finally, a system of smart PZT-interface and wireless sensor node is evaluated for its performance on a lab-scale cable-anchorage model.

Citation Download Citation

Khac-Duy Nguyen, Po-Young Lee, and Jeong-Tae Kim "Smart PZT-interface for SHM in tendon-anchorage of cable-stayed bridge", Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 834519 (3 April 2012); https://doi.org/10.1117/12.917538

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