This paper investigates the influence of the hysteretic shear behavior of postinstalled anchors in concrete on the seismic response of nonstructural components (NSCs) using numerical methods. The purpose of the investigation is to evaluate current design requirements for NSC and their anchorage. Current design guidelines and simplified methods, such as floor response spectra (FRS), typically approach the dynamics of the structure‐fastener‐NSC (SFN) system using simplified empirical formulae. These formulations decouple the structure from the NSC and neglect the behavior of the anchor connection, with the assumption of full rigidity. There is a lack of knowledge on the complex interaction between a host structure, the fastening system, and the NSC, herein referred to as structure‐fastener‐nonstructural interaction (SFNI). More specifically, it is important to investigate whether and how the actual hysteresis shear behavior that takes place in the anchorage could alter the seismic response of the SFN system and its components. Herein, the results of extensive nonlinear dynamic analyses (NLDA) with different models for the anchorage force‐displacement relationship are presented and compared with those obtained with FRS procedures and current code provisions. The anchor models include (a) linear‐elastic, (b) bilinear, and (c) a recently developed hysteresis rule. The results of the NLDA showed that the first two approaches are not able to reflect the behavior of an anchor loaded in dynamic shear. Moreover, when using the more refined hysteresis model, it appears that current code provisions might underestimate the component and anchor shear amplification factors for rigid NSC fixed to the host structure through anchors.

中文翻译：

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对非结构构件的抗震要求锚固在混凝土中，以进行结构-紧固件-非结构相互作用（SFNI）

本文采用数值方法研究了混凝土中后装式锚的滞后剪切特性对非结构构件（NSC）地震响应的影响。调查的目的是评估NSC及其锚固的当前设计要求。当前的设计指南和简化的方法（例如地板响应谱（FRS））通常使用简化的经验公式来计算结构-紧固件-NSC（SFN）系统的动力学。这些公式在假定完全刚度的情况下使结构与NSC分离，并忽略了锚固连接的行为。对于主体结构，紧固系统和NSC之间的复杂相互作用（此处称为结构-紧固件-非结构相互作用（SFNI）），缺乏知识。进一步来说，重要的是要研究锚固中发生的实际滞后剪切行为是否以及如何改变SFN系统及其组件的地震响应。在此，介绍了使用不同模型进行锚固力-位移关系的广泛非线性动力学分析（NLDA）的结果，并将其与通过FRS程序和当前法规提供的结果进行了比较。锚模型包括（a）线性弹性，（b）双线性和（c）最近开发的磁滞规则。NLDA的结果表明，前两种方法无法反映动态剪力作用下锚固的行为。而且，当使用更精细的磁滞模型时，