Earthquakes and Structures

  • 제8권6호
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  • Pages.1277-1297
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  • 2015
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Evaluating seismic demands for segmental columns with low energy dissipation capacity

  • Nikbakht, Ehsan (Department of Civil and Structural Engineering, Universiti Kebangsaan Malaysia) ;
  • Rashid, Khalim (Department of Civil and Structural Engineering, Universiti Kebangsaan Malaysia) ;
  • Mohseni, Iman (Department of Civil and Structural Engineering, Universiti Kebangsaan Malaysia) ;
  • Hejazi, Farzad (Department of Civil and Structural Engineering, Universiti Kebangsaan Malaysia)
  • 투고 : 2013.12.01
  • 심사 : 2014.11.14
  • 발행 : 2015.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

Post-tensioned precast segmental bridge columns have shown high level of strength and ductility, and low residual displacement, which makes them suffer minor damage after earthquake loading; however, there is still lack of confidence on their lateral response against severe seismic loading due in part to their low energy dissipation capacity. This study investigates the influence of major design factors such as post-tensioning force level, strands position, columns aspect ratio, steel jacket and mild steel ratio on seismic performance of self-centring segmental bridge columns in terms of lateral strength, residual displacement and lateral peak displacement. Seismic analyses show that increasing the continuous mild steel ratio improves the lateral peak displacement of the self-centring columns at different levels of post-tensioning (PT) forces. Such an increase in steel ratio reduces the residual drift in segmental columns with higher aspect ratio more considerably. Suggestions are proposed for the design of self-centring segmental columns with various aspect ratios at different target drifts.

키워드

과제정보

연구 과제 주관 기관 : Fundamental Research Grant Scheme of Malaysia

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피인용 문헌

  1. Investigation on seismic performance and functionality of self-centring post-tensioned segmental columns 2018, https://doi.org/10.1080/15732479.2017.1359632