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Experimental Study and Evaluation of Tension Stiffening Model in High Strength Concrete Beams

고강도 콘크리트 보에서 Tension Stiffening 모델을 이용한 실험적 연구 및 평가

  • Shin, Dae Hwan (Department of Architectural Engineering, Kyunghee University) ;
  • Jo, Eunsun (Department of Architectural Engineering, Kyunghee University) ;
  • Kim, Min Sook (Department of Architectural Engineering, Kyunghee University) ;
  • Kim, Heechuel (Department of Architectural Engineering, Kyunghee University) ;
  • Lee, Young Hak (Department of Architectural Engineering, Kyunghee University)
  • Received : 2014.02.01
  • Accepted : 2014.02.11
  • Published : 2014.02.28

Abstract

In strength limit states design, it is assumed that after cracking, reinforcement carries all tension in the tension zone of reinforced concrete members. However, it can be seen the concrete between cracks will contribute to carrying a part of the tension stress in actual concrete members particularly at service load levels, this effect is referred as tension stiffening effect. In this study, tension stiffening models and high strength concrete beam flexural test results were verified through comparison. The relationship between moment-curvature and load-deflection was evaluated by result of tension stiffening model and test result values. The analysis results showed that ACI 318 and Owen & Damjanic generally shows good agreement.

Acknowledgement

Supported by : 한국연구재단

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