Dynamic Soil Structure Interaction Behaviour Of Asymmetric 3d Building Frames With Isolated Footing

Abstract

In the fashionable design process, building frames are widely established at their bases. In any case, in all actuality, adaptability of supportive medium permits some development of establishment. This causes a decrease in stiffness of the building frames and hence subsequently causes an increase in natural periods and hence causes an alteration in the overall system. These effects can be seen in isolated footing building frames. In the present work, the response on building frames under seismic forces with isolated footings are incorporated with soil flexibility. The 3D analysis was carried out in SAP2000 V14 software. In the analysis, the soil is modeled as a spring with 6 DOF and its stiffness varies with the type of soil adopted with the following properties of soil such as dynamic shear modulus, poisons ratio etc. Impact of number of parameters, for example, number of stories, number of bays, diverse soil conditions and traverse to stature proportion and ground storey tallness is considered in present review.  The analysis is carried out for bare frame in Seismic Zone-V with and without accounting for soil flexibility. From the analysis it is observed that the natural period, base shear, lateral displacement of the structure increases with the increase in number of storey, number of bays.