The Effect of soil-flexibility on seismic response of a typical Steel Plate Shear Wall subjected to Duzce Earthquake

摘要

Steel Plate Shear Wall is commonly employed as a principal system to resist lateral loads due to wind or earthquake forces. An accurate model for SPSW needs to consider the effect of all components for analysis such as foundation and subsoil. One of most important aspects of structural analysis is soil-structure interaction (SSI). Such interaction may alter the dynamic characteristics of structures and consequently may be beneficial or detrimental to the performance of structures. This investigation is aimed to evaluate the effect of soil-structure interaction on seismic response of a typical multi-story SPSW designed according to AISC requirements. In this procedure, a time-direct method is used in which the unbounded soil is modeled by couple finite-infinite elements. To investigate the effects of SSI the following types of analysis are performed: in the first type, the structure is analyzed without subsoil (fixed base) and in the second type, analysis is carried out for the same structure with consideration of soil-structure interaction (flexible-base). Finally, the results of analysis with and without SSI effects are compared.