50 地震時の剛体の転倒限界と移動量に関する検討

概要

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The purpose of this paper is to examine overturning criteria and horizontal displacements of rigid bodies due to earthquake excitations. Many response analyses of rigid bodies are conducted using twenty four observed earthquake records with changing some parameters, the ratios of width to height (B/H) of rigid bodies and friction coefficients (μ). The frequency characteristic of each earthquake record is represented by an equivalent frequency obtained from the maximum acceleration and the maximum velocity of the record. As the results, it has become clear that : 1) in the case of μ larger than B/H, the overturning criteria can be generally defined by two equations, an equation of static overturning acceleration and an equation of constant velocity proposed by Dr. Ishiyama, though the latter equation tends to underestimate the criteria if B/H is large; 2) in the case of μ smaller than B/H, the horizontal displacements of rigid bodies are dependent on μ, not on B/H.
一般社団法人日本建築学会の論文
1997-03-20