Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Calibration Methodology for Predicting Hysteretic Behavior of Reinforced Concrete Columns Failed in Shear

전단파괴가 발생한 기둥의 이력거동 예측을 위한 매개변수 결정방법 제안

  • Lee, Chang seok (Department of Architectural Engineering, Hanyang University) ;
  • Han, Sang Whan (Department of Architectural Engineering, Hanyang University) ;
  • Ko, Girbo (Department of Architectural Engineering, Hanyang University)
  • Received : 2016.09.13
  • Accepted : 2016.11.28
  • Published : 2017.01.01
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Abstract

Columns in existing reinforced concrete structures that are designed and constructed without considering seismic loads generally exhibit widely spaced transverse reinforcements without using seismic hooks. Due to the insufficient reinforcement details in columns compared to the reinforcement requirements specified in modern seismic codes, brittle shear failure is likely to occur. This may lead to sudden collapse of entire structure during earthquakes. Adequate retrofit strategy is required for these columns to avoid such catastrophic event. In order to do so, behavior of columns in existing reinforced concrete structures should be accurately predicted through computational analysis. In this study, an analytical model is proposed for accurately simulating the cyclic behavior of shear critical columns. The parameters for backbone, as well as pinching and cyclic deterioration in strength and stiffness are calibrated using test data of column specimens failed by shear.

Keywords

References

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