【作者】 钱坤；

【导师】 徐得潜；

【作者基本信息】 合肥工业大学 ， 市政工程， 2008， 硕士

【摘要】 随着城市化的不断加速,近年来诸多城市均出现了不同程度的内涝现象,给人们带来了巨大的经济损失。产生这种现象的原因是多方面的,除了排水设施不健全、管理制度落后及气候变化等原因以外,现有的雨水管网设计优化方法采用的定值设计法也是一个重要原因,有必要将可靠性理论引入到雨水管网的优化设计中来。本文从雨水管网的可靠性和其优化设计着手,建立基于可靠性的雨水管网优化设计模型。首先分析常规的雨水管网设计方法,为优化设计提供理论基础。然后,对设计过程中涉及的雨水管网的不确定性因素进行分析,并从两个不同角度对雨水管网可靠性的计算方法进行研究,得出可将可靠指标已确定时各设计参数的关系作为约束条件应用在管网优化当中去的结论。最后,利用图论中邻接矩阵的理论对管网进行遍历,采用直接优化法的思想对雨水管网进行优化计算。将本文所述的模型应用在实际算例中,采用MATLAB语言编制程序,并将常规雨水管网设计优化方法计算的结果与基于可靠性的雨水管网优化模型计算的结果进行了对比,验证了模型具有一定的理论和实用价值。更多还原

【Abstract】 In recent years, with the accelerated development of urbanization process, waterlogging has taken place in various degree in a great deal of cities and caused the enormous economic losses to people. The cause of the phenomenon is various , except that the diseased draining equipment and behindhand management system and metabolic climate, it is a main rease adopting the definite value design method in existing optimal design method of rainwater pipe networks. So, it is essential import reliability theory to the optimal design of rainwater pipe networks.Considering reliability and optimal design of rainwater pipe networks,the thesis try to found the optimal design model of urban rainwater pipe networks based on reliability. At first, the thesis analysed general design method of rainwater pipe networks,thus establishing the theoretics base of optimal design. Afterwards, the thesis analysed uncertain factors in design of rainwater pipe networks and studied calculating methods of reliability of rainwater pipe networks from two aspects,thus educed it is feasible looking the relation of parameter as restrict condition in optimal design of rainwater pipe networks, on the base of certain reliability index. In conclusion, the thesis travelled through rainwater pipe network,using the theory of adjacency matrix in graph theory and carries through optimal design of rainwater pipe networks using direct optimize method.The computer program for the thesis is based on Matlab. Appling the model founded in the thesis to a actual example, contrasting the calculating result of general design method of rainwater pipe network and of the optimal design model of rainwater pipe network, be based on reliability theory,ultimately,the thesis validate the theory and applied value of the model.更多还原