This paper investigates the seismic behavior of an electrical cabinet considering the influence of equipment-anchor-interaction (EAI) that is generally not taken into consideration in a decoupled analysis. The hysteresis behavior of an anchor bolt in concrete was thereby considered to highlight this interaction effect. To this end, the experimental behavior of an anchor bolt under reversed cyclic loading was taken from the recently developed literature, and a numerical model for the anchor hysteresis was developed using the component approach. The hysteresis properties were then used to calibrate the multi-linear link element that is implemented as a boundary condition for the cabinet incorporating the EAI. To highlight this EAI further, the nonlinear time history analysis was performed for a cabinet considering the hysteresis behavior comparative to a fixed boundary condition. Additionally, the influence on the seismic fragility was evaluated for the operational and structural condition of the cabinet. The numerical analysis considering the anchor hysteresis manifests that the in-cabinet response spectra (ICRS) are significantly amplified with the corresponding reduction in the seismic capacity of 25% and 15% for an operational and structural safety condition under the selected protocols. Considering the fixed boundary condition over a realistic hysteresis behavior of the anchor bolt is more likely to overestimate the seismic capacity of the cabinet in a seismic qualification procedure.

本文研究了电气柜的抗震行为，考虑了设备-锚点相互作用 (EAI) 的影响，而这种影响通常在解耦分析中不予考虑。因此，考虑到混凝土中地脚螺栓的滞后行为突出了这种相互作用效应。为此，从最近开发的文献中获取了反向循环载荷下地脚螺栓的实验行为，并使用分量方法开发了锚杆滞后的数值模型。然后使用滞后特性来校准多线性链接元件，该元件被实现为包含 EAI 的机柜的边界条件。为了进一步突出这个 EAI，考虑到与固定边界条件相比的滞后行为，对机柜进行了非线性时程分析。此外，还评估了机柜的运行和结构条件对地震脆弱性的影响。考虑锚滞后的数值分析表明，在选定的协议下，在操作和结构安全条件下，柜内响应谱 (ICRS) 显着放大，抗震能力相应降低 25% 和 15%。考虑到锚栓实际滞后行为的固定边界条件，更有可能在抗震鉴定程序中高估机柜的抗震能力。对机柜的运行和结构条件对地震脆性的影响进行了评估。考虑锚滞后的数值分析表明，在选定的协议下，在操作和结构安全条件下，柜内响应谱 (ICRS) 显着放大，抗震能力相应降低 25% 和 15%。考虑到锚栓实际滞后行为的固定边界条件，更有可能在抗震鉴定程序中高估机柜的抗震能力。对机柜的运行和结构条件对地震脆性的影响进行了评估。考虑锚滞后的数值分析表明，在选定的协议下，在操作和结构安全条件下，柜内响应谱 (ICRS) 显着放大，抗震能力相应降低 25% 和 15%。考虑到锚栓实际滞后行为的固定边界条件，更有可能在抗震鉴定程序中高估机柜的抗震能力。考虑锚滞后的数值分析表明，在选定的协议下，在操作和结构安全条件下，柜内响应谱 (ICRS) 显着放大，抗震能力相应降低 25% 和 15%。考虑到锚栓实际滞后行为的固定边界条件，更有可能在抗震鉴定程序中高估机柜的抗震能力。考虑锚滞后的数值分析表明，在选定的协议下，在操作和结构安全条件下，柜内响应谱 (ICRS) 显着放大，抗震能力相应降低 25% 和 15%。考虑到锚栓实际滞后行为的固定边界条件，更有可能在抗震鉴定程序中高估机柜的抗震能力。