In this paper, the dynamic analysis of buildings considering soil-structure interaction whose base shears was defined by Calculation of Lateral Load Carrying Capacity and Calculation of Response and Limit Strength depending on the design ductility of buildings was conducted.The response ductility of buildings with the base shear by Calculation of Response and Limit Strength based on accurate value of soil amplification agreed well to the design ductility, however both response ductility by Calculation of Response and Limit Strength based on simplified value of soil amplification and that by Calculation of Lateral Load Carrying Capacity showed significant difference from the design ductility.�
In this paper, the equations to calculate the seismic response of buildings considering precise effect of the soil at the building site are presented. These equations are readily used for the seismic design of buildings. Based on the equations, effect of the strength of building and soil on seismic response was discussed. It is found that seismic responses, particularly those of the buildings with short or long natural periods significantly differ depending on accuracy of soil amplification. Finally, the availability of this calculation method is confirmed by time-history seismic response analysis.
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