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1、SeismicreliabilityanalysisofurbanwaterdistributionnetworkVb1.5.No.1EARTHQUAKEENGINEERINGANDENGINEERINGVIBRATIONJune,2006ArticleID:1671??3664(2006)01??0071??07SeismicreliabilityanalysisofurbanwaterdistributionnetworkLiJie(李杰)I2t,WeiShulin(~书麟)andLiuWei(~0威)1.B
2、uildingEngineeringDepartment,TongjiUniversity,Shanghai200092,China2.StateKeyLaboratoryforDisasterReductioninCivilEngineering,Shanghai200092,China3.ChinaConstruction(Shenzhen)DesignInternational,Shanghai200233,ChinaAbstract:Anapproachtoanalyzetheseismicreliabi
3、lityofwaterdistributionnetworksbycombiningahydraulicanalysiswithafirst-orderreliabilitymethod(FORM),isproposedinthisPapeThehydraulicanalysismethodfornormalconditionsismodifiedtoaccommodatethespecialconditionsnecessarytoperformaseismichydraulicanalysis.Inorder
4、tocalculatetheleakageareaandleakingflowofthepipelinesinthehydraulicanalysismethod.anewleakagemodelestablishedfromtheseismicresponseanalysisofburiedpipelinesispresented.Tovalidatetheproposedapproach.anetworkwitll17nodesand24pipelinesisinvestigatedindetail.Thea
5、pproachisalsoappliedtoanactualprojectconsistingof463nodesand767pipelines.Theresultsshowthattheproposedapproachachievessatisfactoryresultsinanalyzingtheseismicreliabilityoflarge-scalewaterdistributionnetworks.Keywords:waterdistributionnetwo~;leakagemodel;hydra
6、ulicanalysis;FORM;seismiccapacityreliability1Introductionwaterdistributionnetworks(WDNs).alongwithotherlifelinesystemssuchastransportationsystems,gastransmissionnetworks,ene唱ysupplysystems,etc.,areindispensabletoourdailylife.Unfortunately,theirfrangiblepertor
7、mancesduringmanypreviousstrongearthquakeshaveledtonumerouslossesandcasualties.Therefore.studyoftheseismicreliabilityoftheWDN-一hasbecomeanimportantresearchtopicinearthquakeengineering.ThereliabilityofWDNsisgenerallyconcernedwiththeirabilitytoprovideanadequatel
8、evelofservicetocustomers.underbothnorrnalandabnormalconditionsfGoulter,1995).Ingeneral,thereliabilityanalysisisfocusedonabnormalconditions.includingthemechanicalfailureofpipe.orthehydraul
