Abstract
A finite layer approach capable of analysing both layered and continuously varying cross- anisotropic elastic soil profiles is presented. The method of analysis is suited for soil deposits in which there is no variation in properties in the horizontal plane. For this type of soil, the proposed technique provides an accurate and computationally more economical alternative to the use of the finite element method. The benefits of this approach are particularly evident for three dimensional problems and for problems involving deep soil layers. The application of the theory is illustrated by analysing the behaviour of uniformly loaded strip and circular footings resting on a soil with homogeneous crust underlain by a main deposit whose stiffness increases linearly with depth. The results of this analysis indicate the importance of a weathered crust upon the settlement of surface footings and provide a convenient means of estimating the effect of this crust and the underlying non-homogeneity upon settlement for a limited range of soil profiles (A). (TRRL)
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