基于管线三态破坏的震后管网水力模拟方法

Hydraulic simulation method of water supply pipeline after earthquake basing on three state damage of pipeline

传统震后供水管网水力模拟中,每根管线上都设置虚拟渗漏点并以管线的平均渗漏程度设置渗漏点参数。显然这样会大大增加管网拓扑结构的复杂程度,且没有考虑实际地震中管线的爆管漏损。为了模拟真实的震后管网局部的渗漏状态,采用数字仿真模拟管线地震破坏程度,对比其地震破坏概率确定渗漏类型,给出考虑管线三态破坏的震后供水管网水力模拟方法,并编制程序对算例管网进行地震破坏模拟分析,得到结论:由于不考虑爆管断开水力损失,传统方法对震后管网功能估计偏高。

The leakage points are set on each pipeline and the leakage parameters are set up by the average leakage degree of the pipeline in the traditional hydraulic simulation of the water supply pipeline after the earthquake. Obviously, without considering the pipeline leakage in the actual earthquake, this will also greatly increase the complexity of network topology. Random number is used to compare to the seismic reliability of pipeline in order to simulate the leakage state. Then, the hydraulic simulation method of water supply pipeline after earthquake basing on three state damage of pipeline is given. The traditional method has high estimation of the function without considering the hydraulic loss of the explosion tube after programming to simulate an example of the water supply network