Earthquakes and Structures

  • 제8권3호
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  • Pages.573-589
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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

Scenario-based seismic performance assessment of regular and irregular highway bridges under near-fault ground motions

  • Dolati, Abouzar (Department of Civil and Environmental Engineering, Amirkabir University of Technology) ;
  • Taghikhany, Touraj (Department of Civil and Environmental Engineering, Amirkabir University of Technology) ;
  • Khanmohammadi, Mohammad (School of Civil Engineering, College of Engineering, University of Tehran) ;
  • Rahai, Alireza (Department of Civil and Environmental Engineering, Amirkabir University of Technology)
  • 투고 : 2013.11.01
  • 심사 : 2014.06.19
  • 발행 : 2015.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to investigate the seismic behavior of highway bridges under near-fault earthquakes, a parametric study was conducted for different regular and irregular bridges. To this end, an existing regular viaduct Highway Bridge was used as a reference model and five irregular samples were generated by varying span length and pier height. The seismic response of the six highway bridges was evaluated by three dimensional non-linear response history analysis using an ensemble of far-fault and scenario-based near-fault records. In this regard, drift ratio, input and dissipated energy as well as damage index of bridges were compared under far- and near-fault motions. The results indicate that the drift ratio under near-fault motions, on the average, is 100% and 30% more than far-fault motions at DBE and MCE levels, respectively. The energy and damage index results demonstrate a dissipation of lower energy in piers and a significant increase of collapse risk, especially for irregular highway bridges, under near-fault ground motions.

키워드

참고문헌

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  2. Numerical study of seismic response of irregular multi-frame reinforced concrete bridges vol.173, pp.11, 2020, https://doi.org/10.1680/jstbu.18.00222
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  4. A simplified iterative approach for testing the pulse derailment of light rail vehicles across a viaduct to near-fault earthquake scenarios vol.235, pp.9, 2015, https://doi.org/10.1177/0954409720987410
  5. External GFRP confinement to decrease near-fault earthquake damage of reinforced concrete structures considering soil-structure interaction vol.34, pp.None, 2015, https://doi.org/10.1016/j.istruc.2021.08.027