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Seismic Performance Evaluation of Reinforced Concrete Bridge Columns under Varying Axial Force

변동 축하중을 받는 철근콘크리트 교각의 내진성능평가

  • 김태훈 (성균관대학교 건축ㆍ조경 및 토목공학 연구소) ;
  • 김운학 (국립한경대학교 토목공학과) ;
  • 신현목 (성균관대학교 토목환경공학과)
  • Published : 2003.04.01

Abstract

The purpose of this study is to evaluate seismic performance of reinforced concrete bridge columns under varying axial force. A computer program, named RCAHEST(reinforced concrete analysis in higher evaluation system technology), for the analysis for reinforced concrete structures was used. Material nonlinearity is taken into account by comprising tensile, compressive and shear models of cracked concrete and a model of reinforcing steel. The smeared crack approach is incorporated. In boundary plane at which each member with different thickness is connected, local discontinuity in deformation due to the abrupt change in their stiffness can be taken into account by introducing interface element. The effect of number of load reversals with the same displacement amplitude has been also taken into account to model the reinforcing steel and concrete. The proposed numerical method for seismic performance evaluation of reinforced concrete bridge columns under varying axial force is verified by comparison with reliable experimental results.

Keywords

axial force;reinforced concrete bridge columns;seismic performance evaluation;material nonlinearity

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