供水管网地震功能的失效分析

在地震发生后,供水管网一般处于渗漏工作状态。为了评价城市供水管网的抗震能力,需要进行震后带渗漏供水管网的水力分析,对震后供水管网的流分析方法进行了改进,并建立了震后带渗漏供水管网的水力分析模型,通过连通性分析和连续性方程求解,计算得到震后节点的供水量和节点压力,进而评价供水管网的地震功能。另外,以某供水管网为例,演示了该方法的可行性。为供水管网的抗震设计、城市供水系统的抗震能力预测、提高震后救灾恢复的效率具有重要的指导作用。

SEISMIC PERFORMANCE ANALYSIS ON WATER SUPPLY NETWORK

When an earthquake occurred, leakage phenomena usually occur in water supply network. In order to evaluate the seismic performance of the water supply network, it is necessary to conduct the service performance analysis of the water supply network based on pipe leakage model. The analysis method is presented and discussed in detail in this paper, and a hydraulic leakage model is also built. Through the connectivity analysis and the continuity equation solution, the node flows and node water heads can be obtained, and finally the service performance of the water supply network can be evaluated. In addition, an example of the water supply network is presented to illustrated and discussed in detail. All of above may be applied to practice, such as earthquake design, earthquake damage forecast and earthquake mitigation analysis of practical water supply network.