A SIMPLE CONSTITUTIVE MODEL FOR THE SEISMIC ANALYSIS OF SLOPES AND ITS APPLICATIONS

概要

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Several constitutive models of varying complexity have been proposed for use in estimating the seismic response of slopes. The main purpose of this study is to propose and demonstrate a new 3-D simple cyclic loading model that can be applied to slope design. Both the G - γ, h - γ relationships and the shear strength parameters c and φ can be appropriately accommodated by the model. This is useful because while the G - γ and h - γ relationships of soil have been frequently used for the prediction of seismic response, c and φ are more commonly used in conventional calculations of slope stability based on global factors of safety. Incorporating both parameterizations in a seismic design strategy is therefore likely to prove beneficial. In the first half of the paper, the motivation behind a new model and its theoretical derivation are outlined. Several applications of the model to commonly encountered slope design problems are addressed in the second half. It is shown that the proposed model is very effective in simulating the non-linear dynamic behavior of slopes during strong earthquake.
社団法人地盤工学会の論文
2004-08-15