To examine the impact of looped interdependences among Critical Infrastructure Systems (CISs) on their seismic resilience, an agent-based modelling (ABM) framework has been proposed in this paper. In such a framework, the coupled Transportation System (TS) and Electric Power Supply System (EPSS) have been included. The functionality losses of both TS and EPSS following seismic hazards were quantified by vulnerability functions. Meanwhile, their functionality trajectory during the corresponding post-shock recovery phase were tracked by the developed ABM. Two agents, namely, the two Operators running recovery campaign of TS and EPSS, respectively, are considered. Particularly, the restoration of EPSS is set to be contingent upon the functionality of TS, in the sense that EPSS components can be repairable, only if accessible via the TS. In turn, the restoration of TS will also be influenced by the functionality of EPSS, as many restoration equipment of TS need the power to function. To demonstrate its applicability, such a framework was applied on a virtual network comprising a TS, an EPSS and the urban community that they serve, given different interdependence degrees between the two CISs. A parametric analysis was run to study how the post-shock recovery of the two CISs would be molded by the interdependence between them, under different earthquake scenarios. The simulation outcome demonstrates that the developed framework is able to delineate the post-shock recovery of the coupled TS-EPSS-Community, whose resilience will be sharply weakened, as the interdependence degree reaches a particular threshold value, when it comes to strong shocks.

为了研究关键基础设施系统（CIS）之间相互依赖的环状关系对其抗震能力的影响，本文提出了一种基于主体的建模（ABM）框架。在这样的框架中，已经包括了耦合的运输系统（TS）和电力供应系统（EPSS）。TS和EPSS在地震危险后的功能损失可通过脆弱性函数进行量化。同时，已开发的ABM跟踪了在相应的震后恢复阶段中它们的功能轨迹。两个代理，即两个执行TS恢复活动的运营商和分别考虑了EPSS。特别地，EPSS的恢复被设置为取决于TS的功能，即EPSS组件仅在可通过TS访问的情况下才是可修复的。反过来，TS的恢复也将受到EPSS功能的影响，因为许多TS的恢复设备都需要电源才能发挥作用。为了证明其适用性，在两个CIS之间的相互依存度不同的情况下，将这样的框架应用于包含TS，EPSS和它们服务的城市社区的虚拟网络上。进行了参数分析，研究了在不同地震情况下，两个CIS的震后恢复将如何被它们之间的相互依存所塑造。仿真结果表明，所开发的框架能够描述耦合后的TS-EPSS-Community的震后恢复能力，当相互依赖程度达到特定阈值时，其回弹力将急剧减弱，这涉及到强烈的冲击。