Seismic Analysis of Multistory Buildings including Foundation-Soil-Foundation Interaction

摘要

A detailed parametric study on the influence of soil-structure interaction in therndynamic characteristics of usual multistory frame structures is presented. A finiternelement model Transient analysis, based on finite element model, is conducted for arntypical 2-D, six-story, three-bay concrete frame. Numerical results obtained usingrnfixed-base support conditions are compared to those corresponding to foundationsoilrnand foundation-soil-foundation interaction conditions. Soil-structure interactionrnis taken into consideration by employing discrete spring, dashpot, and virtual massrnelements at the soil-foundation interface. The conclusions drawn from thesernanalyses support the notion that, under certain conditions, soil-structure interactionrnshould be considered in the analysis of usual multistory buildings and should not bernlimited to special, large scale structures only.