STRESS TRANSFER MODEL OF FLOOR SLAB-TRANSVERSE BEAM SUBSYSTEM IN STEEL FRAMES

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  • IYAMA Jun
    Dept. of Architecture, Graduate School of Engineering, the University of Tokyo

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  • 鋼構造骨組における床スラブ-直交梁系のねじり応力伝達モデル
  • コウ コウゾウ ホネグミ ニ オケル ユカスラブ チョッコウリョウケイ ノ ネジリ オウリョク デンタツ モデル

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Reinforced concrete floor slabs connected to transverse beams might be helpful for structural systems to endure earthquakes after complete collapse of longitudinal beams. This paper proposes mathematical models of the subsystem composed of floor slabs and transverse beams which bears torsional moment, in order to estimate elastic stiffness and displacement of the subsystem. Two mathematical models are introduced in the form of differential equations. One model neglects distorsion of beam sections and the other considers it. Comparing the solutions of the models with those of Finite Element Method, the latter model shows better agreement with FEM on the estimation of torsional stiffness and deformation.

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