飽和砂質地盤の動力学特性について : 2. 円型基礎・上下加振の ground compliance の特徴と非連成力学モデルによる simulation の限界

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In this paper, the authors present some results different from the former works in a certain parameter range by investigating the numerical results about the analytical solutions of dynamical ground compliance derived in the preceding paper. The out line will be described in the following items below : 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 different 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. 4. There are some permeability ranges which are unable to be qualitatively explained by behaviors of both the perfectly elastic and Voigt-type viscoelastic body simulated by using the characteristics of the body waves traveling in the aggregate body. 5. The value of imagenary part of dynamical ground compliance, corresponding to radiation energy through a sub-soil ground, is large in high permeability range, on the other hand, it becomes small in low permeability range, because the relative particle velocities between the porous elastic body and the pore water decrease in this range.
社団法人日本建築学会の論文
1976-07-30

飽和砂質地盤の動力学特性について : 2. 円型基礎・上下加振の ground compliance の特徴と非連成力学モデルによる simulation の限界

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