Earthquakes and Structures

  • 제28권2호
  • /
  • Pages.161-171
  • /
  • 2025
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Fragility analysis of a reinforced concrete frame structure subject to multi-dimensional earthquakes of different-durations

  • Xisheng Deng (School of Civil Engineering and Geomatics, Southwest Petroleum University) ;
  • Zhikang Li (School of Civil Engineering and Geomatics, Southwest Petroleum University) ;
  • Xinyue Lai (School of Civil Engineering and Geomatics, Southwest Petroleum University) ;
  • Tao Liang (School of Civil Engineering and Geomatics, Southwest Petroleum University) ;
  • Yilin Zhu (School of Civil Engineering and Geomatics, Southwest Petroleum University)
  • 투고 : 2024.04.27
  • 심사 : 2024.12.13
  • 발행 : 2025.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to study the fragility of a reinforced concrete (RC) frame structure subjected to multi-dimensional earthquakes of different-duration, 19 sets of long and short-duration ground motions are assembled by using "spectrally equivalent". Incremental dynamic analysis (IDA) is used to analyze the fragility of an RC frame structure. The IDA curve and percentile curves for two-dimensional and three-dimensional long- and short-duration ground motions are obtained. Analyzing the response of a structure subject to ground motions with different dimensions and durations using Sa(T1,0.05) as a ground motion intensity parameter, a structural seismic probability demand model is established, and different evaluation indicators are used to analyze the failure probabilities of the structure. The results show that when subjected to long-duration ground motion, the structure is more prone to collapse. Compared with two-dimensional ground motion, the effect of long-durations has a slightly advance on structural damage subjected to three-dimensional ground motion. Different fragility evaluation measures can be used to evaluate the seismic performance of the structure, which can be used in engineering design.

키워드

과제정보

This article is based upon work supported by International Cooperation Project of Sichuan Science and Technology Department (2020YFH0127), Science and Technology Found of Guangyuan City Investment Group (GYCT-KY-202101).

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