1次元モデルを例とした土の弾塑性挙動の記述(<特集>圧密沈下の予測と対策)

概要

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A simple method to describe the elastoplastic behavior of soils is shown as a one-dimensional model. From one-dimensional soil behavior (e.g., e〜log σ relation derived from oedometer test), various aspects of soil properties such as the influences of density and bonding can easily be described. The influence of density is rationally taken into consideration employing only one evolution rule of the state valuable ρ which is defined by the difference of void ratios between the present state and the normally consolidated state. Typical behavior of naturally deposited soils also can be simulated using the combination of the state valuables ρ and ω, where ω reflects the influence of bonding. The method presented here is easily applicable to 2 and 3 dimensional elastoplastic modeling of soils.
2008-09-01