ABSTRACT

In this paper, the probabilistic performance-based approach is adopted to evaluate the seismic performance of multi-story reinforced concrete wall-frame asymmetric buildings considering soil–structure interaction (SSI) and identify appropriate stiffness and strength centers configurations. A group of fixed- and flexible-base models with different stiffness and strength eccentricities were considered for parametric studies, and their seismic performance was compared in three different limit states. The optimum configuration of centers was found to be a function of base condition and performance objective. The proposed configurations can be adopted in the performance-based design of asymmetric buildings. Furthermore, the results indicate a detrimental effect of SSI in the Life Safety and Collapse Prevention limit states.

摘要

在本文中，采用基于概率性能的方法来评估考虑土结构相互作用（SSI）的多层钢筋混凝土墙框架非对称建筑的抗震性能，并确定适当的刚度和强度中心配置。参数化研究考虑了一组不同刚度和强度偏心率的固定和柔性基础模型，并在三种不同的极限状态下比较了它们的抗震性能。中心的最佳配置被发现是基础条件和绩效目标的函数。所提出的配置可用于非对称建筑的基于性能的设计。此外，结果表明 SSI 在生命安全和防倒塌极限状态中的不利影响。