Study of Soil Structure Interaction for Multistoried Framed Structure

Abstract

The structural behaviour depends on the types of soils, foundation type, length of span in the structure, storey number (10 storey and 15 storey) and load types to which is subjected to the frame structure. The differential settlement in buildings is responsible for changes in the forces in the framed structure and is an often lead to failures of the building. The settlement in clay soil soil is more prominent than any other soil like sand or stiff clay. So for the present study clay soil is selected for the settlement analysis of framed structure. In this present work finite element analysis of a 10 and 15 storey building was performed using geotechnical software Midas GTS NX in which soil is modeled as a continuum and structure software Midas GEN is used to model the framed structure. Study was performed using isolated and raft footing in the foundation. It is found that isolated footing is capable of reducing the immediate settlement up to some extent but it is not cost effective. The settlement results are compared with the theoretical methods of settlement calculation and found to be with in the permissible limit.