Assessment of Group of Stone Column Under Sesmic Condition

Abstract

The study of group of stone column is concerned with evaluation and comparison of the behaviour of group of encased stone column and ordinary stone column for static and seismic load condition. Stone column system with specified geometry is modelled and analysed in FEM software program MIDAS GTS 3D. Analysis is categorised into four cases. Pseudostatic method is used for seismic load calculation. The objective of research is to analyse the performance of stone column by considering the effect of various parameters such as diameter of stone column, static and seismic load condition in cohesive clay and silty clay. Effect of encasement is also observed for static loading condition and seismic loading condition. Result shows that encased stone column reduces the settlement and length of stone column.