INVESTIGATIONS OF THE THREE-DIMENSIONAL CONSTITUTIVE EQUATIONS FOR SAND USED IN ANALYSES ON LATERAL BEHAVIOR OF SINGLE PILE

Abstract

A model test for laterally loaded single pile embedded in sand and their 3-D FE analyses have been carried out. In the analyses the sand was assumed to be an elasto-perfectly plastic material, and several 3-D constitutive equations for sand were investigated. In each case, the stress paths of the ground were output and the interaction between the pile and the ground was discussed in detail from a viewpoint of mechanics. It is shown that the 3-D constitutive equation should be selected carefully in such analyses.