摘要
为研究市政埋地供水管网抗寒潮可靠度,本文运用递推分解算法,以某城市供水管网为例,对供水管网抗寒潮连通可靠度进行分析,给出了管网连通可靠度的分布。研究表明,供水管网中水源点分布和管段可靠度是抗寒潮连通可靠度的重要影响因素;居于管网核心区域的成网状节点的可靠度较高,靠近管网边缘的呈树枝状节点的可靠度较低;距水源点较近节点,可靠度较高,距水源点较远节点,可靠度较低。建议优化管网中水源点的分布情况,使水源点尽量均匀分布在管网中;同时建议采取措施来提高每个管段的抗寒潮可靠度。研究对供水管网运行安全的抗寒潮预警具有一定参考价值。
In order to study the cold-wave resistance connectivity reliability of a municipal water supply network,this paper utilizes the recursive decomposition algorithm to calculate the reliability of the water supply network,and gives the reliability distribution for a city water supply network.It is shown that,the water-source distribution and the cold-wave resistance reliability of pipe segments are the two key factors for the cold-wave resistance connectivity reliability of the water supply network.The core-network nodes have higher reliability,while the marginal nodes have lower reliability;the nodes near water-sources have higher reliability,while the nodes far from the water-sources have lower reliability.To increase the cold-wave resistance connectivity reliability,it is suggested to optimize the water-source distribution and increase the segments’reliability.This study is of certain value for early warning of the cold-wave resistance operation safety of the water supply network.
作者
梁建文
高美娇
肖笛
LIANG Jianwen;GAO Meijiao;XIAO Di(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,China;Department of Management Science and Engineering,Nankai University,Tianjin 300071,China)
出处
《自然灾害学报》
CSCD
北大核心
2019年第5期1-8,共8页
Journal of Natural Disasters
基金
国家重点研发计划项目(2016YFC0802400)~~
关键词
市政供水管网
抗寒潮
连通可靠度
管道可靠度
递推分解算法
municipal water supply network
cold-wave resistance
connectivity reliability
pipe segment reliability
recursive decomposition algorithm
