Nonlinear Analysis of High Strength Reinforced Concrete Members Considering the Tension Stiffening Model

인장강성 모델을 고려한 고강도 철근콘크리트 부재의 비선형 해석

  • 홍창우 (강원대학교 산업기술연구소 연구원) ;
  • 윤경구 (한국도로공사 도로연구소 책임연구원) ;
  • 김경진 (충주대학교 토목공학과) ;
  • 박제선 (강원대하교 토목공학과)
  • Published : 1999.10.01

Abstract

The tension stiffening effect, which means the maintaining a part of stiffness after cracking of concrete in tensile, exists at a reinforced concrete member because of the concrete softening and bonding stress between cracks. It is required to consider it for precise analysis and evaluation o structural behavior, due to the possibility of discrepancy between the actual behavior and the analysis without considering the tension stiffening effect. Making and adopting a tension stiffening model is the most simple and effective way for considering it at nonlinear analysis which indicated the estimation from models and experimental results were similar each others. The comparisons on RC beam were, also performed in order to analyzed the influence of concrete strength and steel ratio into the structural behavior. They indicated that the results from analysis estimated quite closely to the test results at low steel ratio, however, overestimated at high steel ratio. The overestimation increase linearly as concrete strength or steel ratio increased.

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