Soil Structure Interaction Effect on Seismic Response of Different Shapes of Plan Asymmetric Buildings

Earthquake has always been a threat to human civilization from the day of its existence, devastating human lives, property, and man-made structures. The very recent earthquake that we faced in our neighbouring country Nepal has again shown nature’s fury, causing such a massive destruction to the country and its people. It is such an unpredictable calamity that it is very necessary for survival to ensure the strength of the structures against seismic forces. Therefore, there is continuous research work going on around the globe, revolving around development of new and better techniques that can be incorporated in structures for better seismic performance. Obviously, buildings designed with special techniques to resist damages during seismic activity have much higher cost of construction than normal buildings, but for safety against failures under seismic forces it is a prerequisite. In this study, we did comparative study on the effect of earthquake on a tall structure to determine its negative impact to enhance our structures resistivity and comparing the variation in forces in irregular shape frame under the effect of seismic forces with different zones and soil types. For this study we are considering a G+24 structure providing loadings as per Indian provisions and seismic zone III & V with soft, medium and hard type soil as per I.S. 1893 part-1 for modelling and analysis we are using analysis tool/software STAAD.Pro V8i.