Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Drift Ratio-based Fragility Functions for Diagonally Reinforced Concrete Coupling Beams

대각보강된 철근콘크리트 연결보의 변위비 기반 취약도 함수 개발

  • Lee, Chang Seok (Department of Architectural Engineering, Hanyang University) ;
  • Han, Sang Whan (Department of Architectural Engineering, Hanyang University) ;
  • Koh, Hyeyoung (Department of Civil Engineering, University of Wisconsin-Madison)
  • 이창석 (한양대학교 건축공학과) ;
  • 한상환 (한양대학교 건축공학과) ;
  • 고혜영 (미국 위스콘신 주립대 (매디슨) 토목공학과 대학원)
  • Received : 2018.10.04
  • Accepted : 2019.02.07
  • Published : 2019.03.01
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Abstract

Diagonally reinforced concrete coupling beams (DRCBs) have been widely adopted in reinforced concrete (RC) bearing wall systems. DRCBs are known to act as a fuse element dissipating most of seismic energies imparted to the bearing wall systems during earthquakes. Despite such importance of DRCBs, the damage estimation of such components and the corresponding consequences within the knowledge of performance based seismic design framework is not well understood. In this paper, drift-based fragility functions are developed for in-plane loaded DRCBs. Fragility functions are developed to predict the damage and to decide the repair method required for DRCBs subjected to earthquake loading. Thirty-seven experimental results are collected from seventeen published literatures for this effort. Drift-based fragility functions are developed for four damage states of DRCBs subjected to cyclic and monotonic loading associated with minor cracking, severe cracking, onset of strength loss, and significant strength loss. Damage states are defined in a consistent manner. Cumulative distribution functions are fit to the empirical data and evaluated using standard statistical methods.

Keywords

References

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