Earthquakes and Structures

  • 제20권2호
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  • Pages.201-213
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  • 2021
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Fragility evaluation of integral abutment bridge including soil structure interaction effects

  • Sunil, J.C. (CSIR-Structural Engineering Research Centre) ;
  • Atop, Lego (Department of Civil Engineering, Indian Institute of Technology) ;
  • Anjan, Dutta (Department of Civil Engineering, Indian Institute of Technology)
  • 투고 : 2020.03.19
  • 심사 : 2021.02.08
  • 발행 : 2021.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

Contrast to the conventional jointed bridge design, integral abutment bridges (IABs) offer some marked advantages like reduced maintenance and enhanced service life of the structure due to elimination of joints in the deck and monolithic construction practices. However, the force transfer mechanism during seismic and thermal movements is a topic of interest owing to rigid connection between superstructure and substructure (piers and abutments). This study attempts to model an existing IAB by including the abutment backfill interaction and soil-foundation interaction effects using Winkler foundation assumption to determine its seismic response. Keeping in view the significance of abutment behavior in an IAB, the probability of damage to the abutment is evaluated using fragility function. Incremental Dynamic Analysis (IDA) approach is used in this regard, wherein, nonlinear time history analyses are conducted on the numerical model using a selected suite of ground motions with increasing intensities until damage to abutment. It is concluded from the fragility analysis results that for a MCE level earthquake in the location of integral bridge, the probability of complete damage to the abutment is minimal.

키워드

참고문헌

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피인용 문헌

  1. Response modification factor and seismic fragility assessment of skewed multi-span continuous concrete girder bridges vol.20, pp.4, 2021, https://doi.org/10.12989/eas.2021.20.4.389