Analysis of a pile for cyclic loading

Abstract

Finite element analysis is presented for pile embedded in cohesive as well as cohesionless soil, subjected to cyclic lateral load. Pile is modelled using beam-column element, whereas nonlinear spring elements are used to represent soil medium. Pile is considered to be linearly elastic. Effect of cyclic loading, is incorporated by degrading soil modulus with number of cycles, and cyclic strain. An iterative procedure is adopted, in which the value of soil modulus is revised after each iteration to make it consistent with pile deflection. Two approaches, LISM and DSPY, are considered in the analysis.