This study investigates the various effects of Soil-Structure Interaction (SSI) on the seismic behavior of steel frames with Steel Plate Shear Wall (SPSW) lateral resisting systems. Nine steel frames with various aspect ratios are studied under multiple seismic hazard levels. The SPSWs are modeled based on the strip model concept, and the Soil-Structure Systems are simulated using the substructure method. The soil beneath the structure is considered as a homogeneous elastic half-space. The Endurance Time method is exploited for nonlinear dynamic analysis of the fixed-base structures and soil-structure systems. Results indicate that use of fixed-base models leads to the significant overestimation of the damage of SPSWs in the lower stories of the structure. Neglecting SSI in squat structures is undoubtedly a conservative choice, while in slender structures, it may lead to the underestimation of structural responses, especially in the upper stories. In the design procedure of the structures with SPSW lateral load resisting system located on soft soils, ignoring SSI effects results in very heavy and cost-intensive code-based designs.

这项研究调查了钢-钢板剪力墙（SPSW）侧向抵抗系统中土-结构相互作用（SSI）对钢框架抗震性能的各种影响。在多种地震危险等级下研究了九种不同纵横比的钢框架。基于条形模型概念对SPSW进行建模，并使用子结构方法对土壤-结构系统进行模拟。结构下面的土壤被认为是均匀的弹性半空间。耐力时间方法用于固定基础结构和土壤结构系统的非线性动力学分析。结果表明，使用固定基础模型会导致高估建筑物下部结构中SPSW的破坏。在蹲式结构中忽略SSI无疑是一个保守的选择，而在苗条的结构中，可能会导致对结构响应的低估，尤其是在高层结构中。在带有SPSW侧向抗力系统的结构设计过程中，该系统位于软土上，忽略SSI效应会导致基于代码的设计非常繁重且成本高昂。