DYNAMIC ANALYSIS OF PILE IN NON LINEAR SOIL

Abstract

Dynamic analysis of pile supported structures has drawn the attention of researchers ssince Niigata and Alaska earthquakes in 1934. This thesis presents a numerical scheme, for the analysis of lateral vibration of pile under seismic loading, based on energy principle. The soil was idealized as non-linear elasto-plastic medium with viscous resistance. The pile response obtained, from this numerical scheme was compared with an experimental study. The experiment was conducted on a large diameter bored pile (well foundation) embedded in sandy soil. Impact type excitation was given to the well foundation. A comparison of the predicted response from the numerical scheme and the experimental observations emphasised the need of a better simulation of soil rheological model under earthquake type loading.