Structural Engineering and Mechanics

  • 제72권3호
  • /
  • Pages.395-408
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  • 2019
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic response of RC frames under far-field mainshock and near-fault aftershock sequences

  • Hosseini, Seyed Amin (Department of Civil Engineering, Faculty of Engineering, Kharazmi University) ;
  • Ruiz-Garcia, Jorge (Department of Civil Engineering, Universidad Michoacana de San Nicolas de Hidalgo) ;
  • Massumi, Ali (Department of Civil Engineering, Faculty of Engineering, Kharazmi University)
  • 투고 : 2018.09.03
  • 심사 : 2019.07.02
  • 발행 : 2019.11.10
⟨ 이전 논문 다음 논문 ⟩

초록

Engineered structures built in seismic-prone areas are affected by aftershocks in addition to mainshocks. Although aftershocks generally are lower in magnitude than that of the mainshocks, some aftershocks may have higher intensities; thus, structures should be able to withstand the effect of strong aftershocks as well. This seismic scenario arises for far-field mainshock along with near-field aftershocks. In this study, four 2D reinforced concrete (RC) frames with different numbers of stories were designed in accordance with the current Iranian seismic design code. As a way to evaluate the seismic response of the case-study RC frames, the inter-story drift ratio (IDR) demand, the residual inter-story drift ratio (RIDR) demand, the Park-Ang damage index, and the period elongation ratio can be useful engineering demand parameters for evaluating their seismic performance under mainshock-aftershock sequences. The frame models were analyzed under a set of far-field mainshock, near-fault aftershocks seismic sequences using nonlinear dynamic time-history analysis to investigate the relationship among IDR, RIDR, Park-Ang damage index and period ratio experienced by the frames. The results indicate that the growth of IDR, RIDR, Park-Ang damage index, and period ratio in high-rise and short structures under near-fault aftershocks were significant. It is evident that engineers should consider the effects of near-fault aftershocks on damaged frames that experience far-field mainshocks as well.

키워드

과제정보

연구 과제 주관 기관 : Kharazmi University

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피인용 문헌

  1. Fragility-based performance evaluation of mid-rise reinforced concrete frames in near field and far field earthquakes vol.76, pp.6, 2020, https://doi.org/10.12989/sem.2020.76.6.751