Advances in concrete construction

  • 제2권4호
  • /
  • Pages.261-280
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  • 2014
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  • 2287-5301(pISSN)
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  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic risk assessment of deficient reinforced concrete frames in near-fault regions

  • Cao, Vui Van (School of Civil Engineering, The University of Queensland) ;
  • Ronagh, Hamid Reza (School of Civil Engineering, The University of Queensland) ;
  • Baji, Hassan (School of Civil Engineering, The University of Queensland)
  • 투고 : 2013.03.09
  • 심사 : 2014.12.03
  • 발행 : 2014.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

In many parts of the world, reinforced concrete (RC) buildings, designed and built in accordance with older codes, have suffered severe damage or even collapse as a result of recent near-fault earthquakes. This is particularly due to the deficiencies of most of the older (and even some of the recent) codes in dealing with near fault events. In this study, a tested three-storey frame designed for gravity loads only was selected to represent those deficient buildings. Nonlinear time history analyses were performed, followed by damage assessment procedures. The results were compared with experimental observation of the same frame showing a good match. Damage and fragility analyses of the frame subjected to 204 pulse-type motions were then performed using a selected damage model and inter-storey drifts. The results showed that the frame located in near-fault regions is extremely vulnerable to ground motions. The results also showed that the damage model better captures the damage distribution in the frame than inter-storey drifts. The first storey was identified as the most fragile and the inner columns of the first storey suffered most damage as indicated by the damage index. The findings would be helpful in the decision making process prior to the strengthening of buildings in near-fault regions.

키워드

과제정보

연구 과제 주관 기관 : Vietnam Ministry of Education and Training, University of Queensland

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피인용 문헌

  1. Earthquake risk assessment methods of unreinforced masonry structures: Hazard and vulnerability vol.9, pp.4, 2015, https://doi.org/10.12989/eas.2015.9.4.719
  2. Determination of earthquake safety of RC frame structures using an energy-based approach vol.19, pp.6, 2017, https://doi.org/10.12989/cac.2017.19.6.689
  3. Characterization of Near-Fault Effects on Potential Cumulative Damage of Reinforced Concrete Bridge Piers vol.17, pp.10, 2014, https://doi.org/10.1007/s40999-019-00428-z
  4. Comparison of displacement capacity of reinforced concrete columns with seismic codes vol.8, pp.4, 2014, https://doi.org/10.12989/acc.2019.8.4.295
  5. FRP Composite in Mitigating Seismic Risk of RC Structures in Near-Fault Regions with/without Aftershocks vol.2020, pp.None, 2020, https://doi.org/10.1155/2020/2847027
  6. External GFRP confinement to decrease near-fault earthquake damage of reinforced concrete structures considering soil-structure interaction vol.34, pp.None, 2014, https://doi.org/10.1016/j.istruc.2021.08.027