Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Numerical investigation of The characteristics of Biaxial Flexure Specimens

수치해석을 이용한 이방향 휨인장 시험체의 특성분석

  • 김지환 (고려대학교 건축.사회 환경공학과) ;
  • 지광습 (고려대학교 건축.사회 환경공학과) ;
  • 강진구 (고려대학교 건축.사회 환경공학과) ;
  • 오홉섭 (국립진주산업대학교, 토목공학과)
  • Published : 2008.04.17
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Abstract

This paper presents the numerical investigation of the characteristics of biaxial flexure specimens for the Biaxial Flexure Test(BFT) which was recently developed to measure the biaxial tensile strength of concrete. Using FEM, the effect of size and eccentricity on the specimens was evaluated. The parameters such as radious of the support and the loadings, thickness and free length were studied. The results of the FE analysis were entirely consistent with the predictive solution, when b/agt;0.4, h/alt;0.6 and the thickness of the specimens were increased. On the other hands, when b/agt;0.4, those with lesser free length showed good results. To limit the difference between the stresses at the end points of 2b as the specimen was sustained and the stress at the center point of the specimen are not over 10%, lateral eccentricity was analyzed to be in the limits of 3%.

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