Seismic Health Monitoring of a Space Reinforced Concrete Frame Structure Using Piezoceramic-Based Sensors
Publication: Journal of Aerospace Engineering
Volume 32, Issue 3
Abstract
In this study, a piezoelectric-based active sensing system was used to conduct the structural health monitoring (SHM) of a one-bay, two-story reinforced concrete (RC) space frame structure subjected to earthquake loadings. The RC frame in which were installed piezoelectric-based actuators and sensors was tested on a shaking table with ground excitation of various intensities. The embedded sensors in the RC frame were used to diagnose the health status of the tested RC frame during the tests, and an energy-base damage index was adopted to quantify the severity of the damage. The test results indicate that the piezoelectric-based active sensing method for SHM revealed the severity of damage of the tested RC frame after earthquake excitations. A simplified and accurate method for simulating the dynamic responses of the tested RC space frame is presented; it was based on the moment-curvature method and identified fundamental frequencies. The calculated displacement time histories and maximum ductility demands of the structural members were compared with those measured in the shake table test, and excellent agreement was achieved.
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Acknowledgments
The authors would like to thank the National Center for Research on Earthquake Engineering and Ministry of Science and Technology, R.O.C., for its financial support of this research.
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©2019 American Society of Civil Engineers.
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Received: May 14, 2018
Accepted: Oct 10, 2018
Published online: Feb 21, 2019
Published in print: May 1, 2019
Discussion open until: Jul 21, 2019
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