Recent studies evidenced that non-structural damage in buildings caused by earthquakes leads to high economic losses and can represent a threat for life safety. Particularly, piping network damage has been widely documented in post-earthquake inspections. In this study, a cascade analysis is conducted to evaluate the seismic demand on two types of piping networks installed in a reinforced concrete framed building. The cascade analysis is performed employing floor acceleration time-histories obtained through non-linear dynamic analyses of infilled and bare frames. The dynamic response of the piping networks is defined accounting for the non-linear behaviour of pipe joints and suspended piping restraint installations. The results show that the acceleration demand and the damage on the network significantly increase in infilled frames compared to bare frames. Additionally, a different seismic damage rate was observed comparing the two piping networks. The outcome of this study is used to provide design recommendations for suspended piping restraint installations, aimed at reducing the seismic vulnerability of the piping networks.

最近的研究表明，地震对建筑物造成的非结构性损坏会导致很高的经济损失，并对生命安全构成威胁。特别是在地震后检查中，管网损坏已被广泛记录。在这项研究中，进行级联分析以评估安装在钢筋混凝土框架建筑中的两种管道网络的抗震需求。级联分析采用通过填充框架和裸框架的非线性动态分析获得的地板加速度时间历程来执行。管道网络的动态响应被定义为考虑到管接头和悬挂管道约束装置的非线性行为。结果表明，与裸帧相比，填充帧的加速需求和网络损坏显着增加。此外，比较两个管道网络，观察到不同的地震破坏率。这项研究的结果用于为悬挂式管道约束装置提供设计建议，旨在减少管道网络的地震脆弱性。