Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Bidirectional Lateral Loading of RC Columns with Short Lap Splices

겹침이음 길이가 짧은 RC 기둥의 이방향 횡하중 가력 실험

  • Lee, Chang Seok (Department of Architectural Engineering, Hanyang University) ;
  • Park, Yi Seul (Department of Architecture Engineering, Hanyang University) ;
  • Han, Sang Whan (Department of Architectural Engineering, Hanyang University)
  • 이창석 (한양대학교 건축공학과) ;
  • 박이슬 (한양대학교 건축공학과 대학원) ;
  • 한상환 (한양대학교 건축공학과)
  • Received : 2019.10.25
  • Accepted : 2019.12.04
  • Published : 2020.01.01
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Abstract

Reinforced concrete (RC) buildings built in the 1980s are vulnerable to seismic behavior because they were designed without any consideration of seismic loads. These buildings have widely spaced transverse reinforcements and a short lap splice length of longitudinal reinforcements, which makes them vulnerable to severe damage or even collapse during earthquakes. The purpose of this study is to investigate the impact of bidirectional lateral loads on RC columns with deficient reinforcement details. An experimental test was conducted for two full-scale RC column specimens. The test results of deficient RC columns revealed that bidirectional loading deteriorates the seismic capacity when compared with a column tested unidirectionally. Modeling parameters were extracted from the tested load-displacement response and compared with those proposed in performance-based design standards. The modeling parameters proposed in the standards underestimated the deformation capacity of tested specimens by nearly 50% and overestimated the strength capacity by 15 to 20%.

Keywords

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