FLOW ANALYSIS OF WATER SUPPLY NETWORKS POST-EARTHQUAKE
In this paper, the flow analysis of water supply networks post-earthquake is performed based on the reliability analysis of pipelines. The limit state function of a buried pipeline (bell and spigot joint) is given according to the wave propagation theory. The key variables of the limit state function are assumed to be normally distributed and uncorrelated or non-normally distributed and correlated. For these two cases, The Ditlevsen or the H-L formula may be used to compute the reliability index of pipelines. It is very convenient that the Ditlevsen formula is adopted to calculate reliability index of pipelines by the optimization tool of the spreadsheet software (Excel 2000). If the H-L formula is used the arithmetic of partial derivatives, equivalent paper the MATLAB program library (Symbolic Math Toolbox) is used to find partial derivatives of the limit state function of buried pipelines and other functions so that the computation of the reliability index of a pipeline can become very simple. The flow analysis of damaged water supply networks is made accounting for the leakage in water systems. The point leakage model is adopted to simulate the leakage, and the anti-sin function of losing probability of pipelines is proposed to express the relation of the leakage area and the losing probability of pipelines.
Limit state function Reliability Flow H-L method Spreadsheet
S.M. Huang S.C. Fu J.B. Jiang
Institute of Earthquake Engineering, China Academy of Building Research, Beijing, China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）