市政埋地供水管网抗寒潮服务可靠度分析  

Cold-wave resistance serviceability analysis of the buried municipal water distribution system

作　　者：梁建文[1] 赵雅坤 肖笛[2] LIANG Jianwen;ZHAO Yakun;XIAO Di(School of Civil Engineering,Tianjin University,Tianjin 300350,China;Department of Management Science and Engineering,Nankai University,Tianjin 300071,China)

机构地区：[1]天津大学建筑工程学院,天津300350 [2]南开大学管理科学与工程系,天津300071

出　　处：《自然灾害学报》2024年第3期122-129,共8页Journal of Natural Disasters

基　　金：国家重点研发计划项目(2016YFC0802400)。

摘　　要：提出了市政埋地供水管网抗寒潮服务可靠度分析的一个方法。针对寒潮期气温变化对供水管道温度应力和管道周围土体冰冻应力的影响,建立管道接头渗漏状态的供水管网水力分析模型,采用一次二阶矩方法计算市政埋地供水管网抗寒潮服务可靠度。以某城市供水管网为例进行分析,分别给出了在蓝色、黄色、橙色和红色寒潮预警下供水管网的服务可靠度。研究表明,寒潮期气温变化对市政埋地供水管网服务可靠度具有明显影响,有必要开展市政埋地供水管网寒潮可靠度分析,寒潮强度、管道接头性能、管网拓扑结构等是市政埋地供水管网服务可靠度的影响因素。研究对于市政埋地供水管网抗灾设计具有一定参考价值。A method of cold-wave resistance serviceability analysis of the buried municipal water distribution system is proposed.Considering the influence of cold-wave temperature change on the temperature stress of water pipeline and the frozen stress of the soil around the pipeline,the water distribution system model with pipeline joint leakage is established,and the first-order second-moment method is used to calculate the cold-wave resistance serviceability of the water distribution system.Taking one water distribution system as an example,the serviceability of the water distribution system under the blue,yellow,orange and red cold-wave warning is presented respectively.The study shows that,the cold-wave temperature change has a significant impact on the serviceability of buried municipal water distribution system,and code-wave intensity,pipeline joint,and network topology are important factors affecting the serviceability of buried municipal water distribution system.The study may have certain reference value for the hazard resistance design of buried municipal water distribution system.

关 键 词：市政供水管网 抗寒潮服务可靠度 温度应力 管道接头变形 管道渗漏 

分 类 号：TU990.3[建筑科学—市政工程] X43[环境科学与工程—灾害防治]