ABSTRACT
The paper demonstrates an analysis for torsionally loaded end-bearing pile foundations embedded in a transversely isotropic soil deposit. The soil displacement field, in the analysis, is expressed through the variable separation technique and the Extended Hamilton′s Principle is applied to derive the differential equations for the pile and soil. These equations are solved analytically in an iterative algorithm. The analysis is found to generate nearly identical results with an existing analysis in literature. A parametric study on the effect of degree of anisotropy on the pile-soil response reveals, anisotropy has a significant effect on the prediction of dynamic pile-head stiffness with frequency. It is also found, the rate of attenuation of the soil displacement function with radial distance reduces with an increase in the degree of anisotropy.
