Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Fragility Function for Existing Low-Rise Piloti-Type Buildings Reflecting Damage From Pohang Earthquake

포항지진의 피해 결과를 반영한 기존 저층 필로티 건물의 지진취약도함수

  • Kim, Jinyoung (Department of Energy and Infra Integrated System, Kangwon National University) ;
  • Kim, Taewan (Department of Energy and Infra Integrated System, Kangwon National University)
  • 김진영 (강원대학교 신산업개발 T-EMS 융합학과) ;
  • 김태완 (강원대학교 신산업개발 T-EMS 융합학과)
  • Received : 2021.07.28
  • Accepted : 2021.09.10
  • Published : 2021.11.01
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Abstract

Current seismic fragility functions for buildings were developed by defining damage state threshold based on story drift concerning foreign references and using the capacity spectrum method based on spectral displacement. In this study, insufficient details and dependence on the core location of piloti-type buildings were not reflected in the fragility function because it was developed before the Pohang earthquake. In order to develop an improved one for piloti-type buildings, several types of core were selected, damage state threshold was determined based on the capacity of structural members, and three-dimensional analyses were utilized. As a result, seismic fragility functions based on spectral acceleration were developed for various core locations and different shear strengths of the column stirrup. The fragility of piloti-type buildings significantly varied according to core location, an additional single wall, and whether the contribution of column stirrup was included or not. To estimate fragility more reasonably, it is necessary to prepare the parameters to reflect actual state well.

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Acknowledgement

이 논문은 행정안전부 극한재난대응 기반기술개발사업의 지원을 받아 수행된 연구임(2020-MOIS31-013)

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