繰返し頂点水平変位を受ける多層平面骨組の弾塑性分岐挙動

概要

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The symmetry limit analysis performed by the present senior author predicted that an unknown type of overall collapse behavior characterized by a cyclic growth of bow-shaped overall deflection mode is possible to occur in multistory multibay weak-beam planar frames subjected to repeated top horizontal displacement, if the column axial compressive force is larger than a certain limit. In this paper, an exact response analysis is performed on a simplified model frame, in order to clarify the mechanism of the appearance and growth of the bow-shaped deflection mode. An exact closed-form solution can be derived by solving the recurring equation relating any pair of consecutive reversal point configurations. It will be shown that the bow-shaped mode should appear at a bifurcation point in an one way loading and grow in an exponential manner with respect to the number of the following loading cycles.
一般社団法人日本建築学会の論文
1995-03-20