Author(s)

H. Hao, T.C. Pan & Z. Zhao

Abstract

Inelastic responses of pile-soil system to blast loads H. Hao, T.C. Pan & Z. Zhao School of Civil and Structural Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 2263 ABSTRACT This paper presents a numerical method to calculate the elastic and inelastic single pile responses to blast loads. It models the pile-soil system as beam-column elements supported by both horizontal and vertical soil springs of Winkler foundation. The material properties of the beam-column elements are represented by a bi-linear moment- rotation relation. The axial force effect is also considered by including the geometrical stiffness. The pile yielding values are obtained from the axial force and moment interaction curves. A tri-linear force displacement relation is used to model the soil stiffness. The Ray lei gh type viscous damping is used to model the energy-loss mechanism of pile and hysteretic damping to mo

Keywords