【作者】 王小菊；

【导师】 叶燎原；

【作者基本信息】 昆明理工大学 ， 防灾减灾工程及防护工程， 2002， 硕士

【摘要】 本文针对在地震作用下供水管网功能失效进行了分析，并为城市供水管网的安全性评价、设计和管理提供了分析方法及震害预测。 文中介绍了正常状态下供水管网的流分析方法。通过解节点方程组的方法求解管网的管段流量和节点水压，并编制了相应的应用程序。 在分析单根管道的抗震可靠性时，考虑了地下管线地震反应的各种主要因素，特别是对液化和龟裂地区管道的抗震能力进行了深入的讨论。论述了地震波造成的管道破坏和由地表液化造成的二次破坏的管道可靠性及其计算方法；对地下管道进行震害预测；并对给水管网的整体可靠性进行了分析。 结合正常情况下城市管网的流分析方法，讨论了对破坏管段的负压处理方法。通过用Monte Carlo技术对管网的连通性分析，确定节点的供水率和系统供水失效区，找出系统的薄弱环节，这可以为城市供水管网的震害预测和抗震加固提供有效的方法和对策。 结合国内外的抗震经验，提出了城市供水管网抗震加固的若干方法和对策。文章最后讨论了地震破坏下供水管网经济损失的评估及评估方法。更多还原

【Abstract】 A new method is developed for evaluating the serviceability of water delivery network under the effect of earthquake. This method serves as security estimating, designing and management tool for water delivery system.Firstly, the paper presents the method for normal state. We can get the flow rate of pipelines and the hydraulic pressure of nodes by solving the equation sets of nodes, and corresponding application program is developed.The paper considers various essential factors when analyzing aseismic reliability of single pipeline, especially discusses the reliability of the pipeline at the area of liquefaction and fault. The computing method of reliability is developed base on damage of pipeline due to earthquake wave and second order damage due to liquefaction.In succession, the paper discusses the method for negative pressure for damaged pipeline according to the method for normal state. We can determine ineffective water supplying area and the rate of water supply of node by analysing the reliability of system with Monte Carlo Method, find the weak link, and provide technique and countermeasure for damage prediction and aseismic reinforcement.Finally, the estimate method of losing is developed for waterdelivery system under earthquake.Several methods and countermeasures for aseismic reinforcement are provided for city water delivery systems base on the above analyses.更多还原