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Functionality analysis of an urban water supply network after strong earthquakes

Earthquake Engineering and Engineering Vibration 2021年第2期20卷 291-302页

作者： Li Jichao Shang Qingxue Hou Guanjie Li Quanwang Wang Tao Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina Earthquake AdministrationHarbin 150080China Department of Civil Engineering Tsinghua UniversityBeijing 100084China

An urban water supply network(WSN)is a crucial lifeline system that helps to maintain the normal functioning of modern ***,the hydraulic analysis of a significantly damaged WSN that suffers from pipe breaks or leaks remains *** this paper,a probability-based framework is proposed to assess the functionality of WSNs in the aftermath of powerful *** serviceability of the WSN is quantified by using a comprehensive index that considers nodal water flow and nodal *** index includes a coefficient that reflects the relative importance of these two *** demand reduction(DR)method,which reduces the water flow of nodes while preventing the negative pressure of nodes,is *** difference between the negative pressure elimination(NPE)method and the DR method is discussed by using the example of a WSN in a medium-sized city in *** functionality values of the WSN are 0.76 and 0.99 when nodal pressure and nodal demands are used respectively as the index of system serviceability at an intensity level that would pertain to an earthquake considered to occur at a maximum *** the intensity of ground motion is as high as 0.4 g,the DR method requires fewer samples than the NPE method to obtain accurate *** NPE method eliminates most of the pipes,which may be unrealistic.

关键词： water supply network system serviceability hydraulic analysis negative pressure elimination benchmark city

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