Manipal Journal of Science and Technology


In the conventional analysis of structures, the effect of soil-structure interaction (SSI) is generally neglected. Analysis of the structures without considering the effect of SSI may not be a realistic approach for all the cases particularly when structures are subjected to forces due to earthquakes. One of the limitations of SSI consideration in the analysis is due to the complexity involved in such analysis and this is the main reason for neglecting SSI in the analysis. In this paper, an alternative method for obtaining a structure response that is similar to a structure taking SSI is proposed. In this approach, the time period of the structure resting on soil is determined in the first step and in the second step, the response of the structure with a similar time period but fixed at the base is obtained. The response of this fixed base structure, without considering SSI is more or less similar to the response of the structure considering SSI.

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