Exploring building vibration dynamics in the wake of the Chi-Chi earthquake: implications for natural hazard preparedness
Journal
Natural Hazards
Journal Volume
120
Journal Issue
14
Start Page
12851
End Page
12867
ISSN
0921-030X
1573-0840
Date Issued
2024-06-07
Author(s)
Shih, David Ching-Fang
Abstract
This study delves into the critical realm of natural hazard preparedness by examining building vibrations after Taiwan’s Chi-Chi earthquake (1999). By meticulously analyzing the monitored displacement of a building pre- and post-catastrophe, we unveil a notable correlation between the building's proximity to the hypocenter and subsequent changes in period and damping as earthquake magnitudes escalate. Based on these insights, we have devised a robust regression model to accurately estimate optimal periods using peak ground acceleration values. Our research provides a pragmatic assessment of a building’s innate vibration characteristics, crucial for long-term seismic monitoring, with a focus on an attic-basement system. The findings offer a fresh perspective on how buildings respond to catastrophic earthquakes, shedding light on their resilience. Moreover, this study demonstrates the feasibility and practicality of evaluating a building's vibration evolution through comprehensive historical strong motion data. Our work provides valuable insights for future maintenance and safety considerations, ensuring steadfast structural integrity in the face of natural hazards.
Subjects
Building vibration
Chi-Chi earthquake
Dynamic behaviour
Earthquake safety assessment
Natural hazard
Publisher
Springer Science and Business Media LLC
Type
journal article