FINITE ELEMENT ANALYSIS ON THE SHEAR BEHAVIORS OF REINFORCED CONCRETE BEAMS WITHOUT SHEAR REINFORCEMENT BY THE USE OF DISCRETE ELEMENT

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  • HIBINO Kenta
    社団法人 土木学会 立命館大学大学院博士後期課程 理工学研究科総合理工学専攻
  • TAKAGI Nobuaki
    社団法人 土木学会 立命館大学 理工学部土木工学科
  • KOJIMA Takayuki
    社団法人 土木学会 立命館大学 理工学部土木工学科

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  • 離散型要素を用いたせん断補強鉄筋を有さない鉄筋コンクリート梁の有限要素法解析
  • リサンガタ ヨウソ オ モチイタ センダン ホキョウ テッキン オ ユウサナイ テッキン コンクリート ハリ ノ ユウゲン ヨウソホウ カイセキ

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Abstract

In this study, the FEM analysis using discrete crack and bond linkage elements is developed to apply to the reinforced concrete beam without shear reinforcement subjected to bending and shear, and the analytical study was carried out on the occurrence of flexural and diagonal cracks, their developments and the shear bearing capacity of the beam. In this analysis, the characteristics of crack and bond elements are determined individually by plain concrete test and bond test respectively. By using this FEM analysis, it is possible to represent the development of flexural crack and diagonal crack, and the decrease of stiffness of beam after cracking. It is also possible to clarify the shear bearing mechanism of reinforced concrete beam without shear reinforcement by using this FEM analysis.

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