Abstract
In this investigation, attempts are made to examine the effects of soil-structure interaction on the deflection modification factor of multistory buildings and to clarify the role of deformable soil on this factor. A comprehensive study is conducted to investigate the effect of inertial interaction on displacement demand ratios in soil-structure systems with different structural characteristics and various non-dimensional parameters, using a simplified interacting model. A two-step regression analysis of the nonlinear, dynamic computer simulation results obtained, leads to a reliable and accurate formula for predicting deflection modification factors that incorporate foundation flexibility. The results illustrate that the application of deflection modification factors derived from fixed-base structures can lead to unsafe evaluation of the structures on soft soil. The proposed formula provides a useful tool for design engineers to incorporate the effect of soil–structure interaction into the evaluation of structural deformations.
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Abedi-Nik, F., Khoshnoudian, F. Deflection modification factors of multistory buildings considering soil-structure interaction. Earthq. Eng. Eng. Vib. 14, 561–570 (2015). https://doi.org/10.1007/s11803-015-0045-y
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DOI: https://doi.org/10.1007/s11803-015-0045-y