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Earthquakes and Structures Volume 17, Number 6, December 2019 , pages 599-609 DOI: https://doi.org/10.12989/eas.2019.17.6.599 |
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Post-earthquake assessment of buildings using displacement and acceleration response |
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Ting-Yu Hsu and Quang-Vinh Pham
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| Abstract | ||
| After an earthquake, a quick seismic assessment of a structure can facilitate the recovery of operations, and consequently, improve structural resilience. Especially for facilities that play a key role in rescue or refuge efforts (e.g., hospitals and power facilities), or even economically important facilities (e.g., high-tech factories and financial centers), immediately resuming operations after disruptions resulting from an earthquake is critical. Therefore, this study proposes a prompt postearthquake seismic evaluation method that uses displacement and acceleration measurements taken from real structural responses that resulted during an earthquake. With a prepared pre-earthquake capacity curve of a structure, the residual seismic capacity can be estimated using the residual roof drift ratio and stiffness. The proposed method was verified using a 6-story steel frame structure on a shaking table. The structure was damaged during a moderate earthquake, after which it collapsed completely during a severe earthquake. According to the experimental results, a reasonable estimation of the residual seismic capacity of structures can be performed using the proposed post-earthquake seismic evaluation method. | ||
| Key Words | ||
| capacity assessment; damage detection/assessment; earthquake/seismic response; residual displacement; stiffness degradation | ||
| Address | ||
| Ting-Yu Hsu: Department of Civil and Construction Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan; Taiwan Building Technology Center, National Taiwan University of Science and Technology, Taipei, Taiwan Quang-Vinh Pham: Department of Civil and Construction Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan | ||