集中横荷重を受ける中空鋼管部材の全体たわみ挙動に及ぼす加力点の局部変形の影響に関する解析的研究

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タイトル別名
  • An Analytical Study on the Effect of Local Deformation at Loading Point on Overall Flexural Deformation Behavior in Steel Tubular Member Subjected to Concentrated Lateral Load

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Tsunami debris attacked and destroyed many buildings in the 2011 off the Pacific coast of Tohuku Earthquake. Steel tubular members are popularly used for the beam-columns of buildings in Japan, so that an evaluation method of the resistant capacity of the member against Tsunami debris becomes the urgent problem. One of the difficulties to develop the evaluation method is that the local deformation caused by the collision object degrades the overall strength of a steel tubular member which degrading rate may be changed by the contact tip shape of the object. In order to investigate the effects, we conducted a static nonlinear analysis of steel tubular members subjected to concentrated lateral loads by using the finite element analysis (FEM) program MSC Marc. The accuracy of the FEM analysis model is verified by the experiment. Being based on the parametric numerical study, it is discussed the degrading effect of loading tip shapes on the lateral load-deflection relations and the collapse modes of steel tubular members.

収録刊行物

  • 都市・建築学研究

    都市・建築学研究 26 79-90, 2014-07-15

    九州大学大学院人間環境学研究院都市・建築学部門

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