Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Fragility Function According to Failure Mode for Lightly Reinforced Concrete Columns

노후 철근콘크리트 건물 기둥의 파괴 모드에 따른 취약도 함수

  • Koo, Su Hyun (Department of Architectural Engineering, Hanyang University) ;
  • Han, Sang Whan (Department of Architectural Engineering, Hanyang University)
  • 구수현 (한양대학교 건축공학과) ;
  • 한상환 (한양대학교 건축공학과)
  • Received : 2024.05.13
  • Accepted : 2024.06.05
  • Published : 2024.07.01
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Abstract

Many older reinforced concrete (RC) buildings were constructed and designed with only gravity loads in mind. Columns in those buildings have insufficient reinforcement details that do not satisfy the requirements specified in current seismic design standards. This study aims to develop drift-based fragility functions for lightly RC columns. For this purpose, a database of 193 lightly RC columns was constructed to determine central and dispersion values of drift ratios for individual damage states. Additionally, to develop more accurate fragility functions of the columns, the failure mode of RC columns was incorporated into fragility functions. The classification procedure for column failure mode is proposed in this study. Fragility functions for older RC columns are constructed according to four different damage states. The main variables of the fragility functions proposed in this study are column properties and failure mode.

Keywords

Acknowledgement

본 논문은 한국연구재단 (2020R1A2C2010548) 과제의 일환으로 수행되었음.

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