Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Analytical Study on the Inelastic Behavior of Reinforced High-Strength Concrete Bridge Columns

고강도 철근콘크리트 교각의 비탄성거동에 관한 해석적 연구

  • 신현목 (성균관대학교 토목환경공학과) ;
  • 이헌민 (성균관대학교 토목환경공학과) ;
  • 성대정 (성균관대학교 토목환경공학과) ;
  • 김태훈 (대우건설 기술연구원)
  • Published : 2006.04.30
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Abstract

The purpose of this study is to investigate the inelastic behavior of reinforced high-strength concrete bridge columns. A computer program, named RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology), for the analysis of reinforced concrete structures was used. Material nonlinearity is taken into account by comprising tensile, compressive and shear models of cracked concrete and a model ol reinforcing steel. The smeared rack approach is incorporated. The increase of concrete strength due to the lateral confining reinforcement has been also taken into account to model the confined high-strength concrete. The proposed numerical method for the inelastic behavior of reinforced high-strength concrete bridge columns is verified by comparison with reliable experimental results.

이 연구의 목적은 고강도 철근콘크리트 교각의 비탄성 거동을 파악하는데 있다. 사용된 프로그램은 철근콘크리트 구조물의 해석을 위한 PCAHEST이다. 재료적 비선형성에 대해서는 균열콘크리트에 대한 인장, 압축, 전단모델과 콘크리트 속에 있는 철근모델을 조합하여 고려하였다. 이에 대한 콘크리트의 균열모델로서는 분산 균열모델을 사용하였다. 횡방향 구속철근으로 구속된 고강도 콘크리트의 강도 증가 효과를 고려하였다. 이 연구에서는 고강도 철근콘크리트 교각의 비탄성 거동의 파악을 위해 제안한 해석기법을 신뢰성 있는 연구자의 실험결과와 비교하여 그 타당성을 검증하였다.

Keywords

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