沈阳市主干供水管网系统抗震可靠性优化  

Optimization of Shenyang City's water supply system under earthquake

作　　者：卫书麟 李杰[2] 刘威[2] 周静海[3] 

机构地区：[1]中建国际(深圳)设计顾问有限公司上海分公司,上海200233 [2]同济大学建筑工程系,上海200092 [3]沈阳建筑大学土木工程学院,辽宁沈阳110000

出　　处：《世界地震工程》2008年第1期17-22,共6页World Earthquake Engineering

基　　金：国家自然科学基金委创新研究群体资助项目(编号:50321803);沈阳市科技攻关项目(编号:1032045-3-01)

摘　　要：供水管网是城市生命线系统中的薄弱系统,易于遭受地震破坏。通过管网拓扑优化,可以达到经济、合理的抗震设计目的。选用模拟退火算法作为系统抗震优化设计的工具,提出了一种结合单元灵敏度分析进行基于网络功能可靠性分析的抗震优化设计方法。将该方法应用于沈阳市主干供水管网的抗震可靠性优化设计中,针对三种不同的节点最低可靠度约束条件,给出了不同的优化改造方案。结果显示,采用建议的优化方法对系统进行优化改造,不但系统可靠度可以大幅度提高,而且系统造价大大降低。Water supply systems are important but always fragile in earthquakes and may lead to severe second disaster.Therefore,studies on the seismic designs of water supply system are really essential.With network＇s cost and reliability as optimization object and restriction respectively,the network topology optimization model is established.Combined with network elements sensitivity analysis,simulated annealing algorithm is chosen to solve the optimization problem.Finally,this method is applied to the seismic optimization design of Shenyang water supply system,which consists of 463 nodes and 977 pipelines.Three different topological structures are given respectively under different reliability restrictions.The results of the project are proved that the methods put forward in this paper are qualified for analyzing and optimizing water supply systems.

关 键 词：抗震可靠性 管网优化设计 模拟退火算法 

分 类 号：P315[天文地球—地震学]