Performance-based earthquake engineering requires accurate estimation of structural response associated with different damage states because of strong ground motion. In recent work (Meza-Fajardo and Papageorgiou, 2018, EESD), we demonstrated that a significant contribution to the response of elastic soil-structure systems for high-rise buildings is attributed to base rocking associated with Rayleigh waves. The present paper presents results of a study investigating the effects of Rayleigh waves on the response of soil-structure systems with non-linear behavior at the level of the superstructure. By introducing a rigid-elastic rotational spring at the base of the building, we take into account the stiffness reduction due to damage to the lateral load-resisting system at its root, and with it, increased displacement demands. Considering different levels of ductility and post-yield stiffness, we investigate the impact of rocking because of Rayleigh waves on maximum and residual interstory drift ratios. Our results indicate that rocking due to surface waves should be an important consideration for design and evaluation of tall buildings, as inelastic action elongates their effective natural period, and consequently, they are more prone to be damaged by resonance and excitation of extended duration because of Rayleigh waves.

中文翻译：

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瑞利波引起地基摇摆作用下高层建筑的延性要求

由于强烈的地面运动，基于性能的地震工程需要准确估计与不同损坏状态相关的结构响应。在最近的工作中（Meza-Fajardo 和 Papageorgiou，2018，EESD），我们证明了对高层建筑弹性土结构系统响应的重大贡献归因于与瑞利波相关的基础摇摆。本文介绍了一项研究结果，该研究调查了瑞利波对在上部结构水平具有非线性行为的土壤结构系统的响应的影响。通过在建筑物的底部引入刚弹性旋转弹簧，我们考虑了由于其根部侧向抗负载系统损坏而导致的刚度降低，以及随之而来的位移需求增加。考虑到不同水平的延展性和屈服后刚度，我们研究了瑞利波引起的摇摆对最大和剩余层间漂移比的影响。我们的结果表明，由于表面波的摇摆应该是高层建筑设计和评估的重要考虑因素，因为非弹性作用延长了它们的有效自然周期，因此，它们更容易被长时间的共振和激发损坏，因为瑞利波。