複合体理論を適用しモデル化した沖積層地盤の動力学特性に関する研究 : (その1)長方形基礎の上下加振ground complianceの特徴

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This paper describes a theoretical study concerning soil-structure dynamic interaction problems on an alluvial medium. The dynamic interaction of a poroelastic half space is investigated using an analytical model based on Biot's theory of wave propagation. The following results have been obtaind in this study, 1) The interaction effect of the pore water gradually decreases with the higher permeability of the aggregate body, and so the behaviors of the aggregate one tend to nearly those of the perfectly elastic one. 2) When it's permeability is low and the excitation frequency is to some extent high, the behaviors of the aggregate one are nearly those of the Voigt-type viscoelastic one. 3) However, even in the preceding item 2, the real part of Dynamical Ground Compliance in low frequency range has a tendency to be basically diffrent from that of the former works. It's tendency can theoretically be explained with the average stresses in the porous elastic.solid and the pore water at the loading area.
社団法人日本建築学会の論文
1992-10-30