Physically-based seismic reliability evaluation of water distribution networks Liu, Wei; Sun, Qianwei; Li, Jie
In this paper, a physically-based seismic reliability evaluation program is proposed to evaluate the performance of water distribution networks (WDNs) subjected to earthquakes. Firstly, a hydraulic equation which considers the leakage of WDNs after earthquakes is introduced. Then, combining with seismic analysis for buried pipeline systems, the hydraulic equation can be solved and the nodal heads of WDNs can be given. Finally, employing a probability density evolution method and a physically-based random function model for ground motions, the probability density function of the extreme values of nodal heads can be obtained, and the seismic functional reliability of WDNs can be given readily.
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