• Title of article

    ConsiderationofuncertaintiesinseismicanalysisofcoupledbuildingpipingsystemsOriginalResearchArticle

  • Author/Authors

    AbhinavGupta، نويسنده , , ByounghoanChoi، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2005
  • Pages
    16
  • From page
    2071
  • To page
    2086
  • Abstract
    Inthispaper,wepresentananalyticalstudyforincorporatingtheeffectofuncertaintiesinmodalpropertiesofuncoupledprimaryandsecondarysystemsintheseismicanalysisofnon-classicallydampedcoupledsystemssuchasbuildingpipingbyresponsespectrummethod.MonteCarlosimulationisusedtoillustratethatthesecondarysystemdesignresponsewhendefinedatanon-exceedenceprobabilityof0.84overtheindividualresponsesobtainedfrommultipleresponsespectrumanalysesbyconsideringuncertaintiesinmodalparametersisexcessivelyhigherthanthedesignresponsespecifiedatthesamenon-exceedenceprobabilityovertheresponsesobtainedfrommultipletimehistoryanalyses.Thisissobecausetheearthquakeinputinaresponsespectrummethodischaracterizedbyadesignspectrumwhichbyitselfisspecifiedatanon-exceedenceprobabilityof0.84overthemultipletimehistorieswithnormalizedpeakgroundacceleration.Accurateevaluationofdesignresponseatanon-exceedenceprobabilityof0.84intheresponsespectrummethodrequiresthattheindividualmodalresponsesbedefinedatappropriateprobabilitylevelsthatmaybedifferentthantheconventionallyusednon-exceedenceprobabilityvalueof0.84.Therequiredprobabilityvaluesareevaluatedbyusingfirstorderreliabilitymethod.Itisshownthatthemodalresponses,whendefinedatanon-exceedenceprobabilityof0.84,wouldgiverelativelyaccuratevaluesofdesignresponseonlyiftheindividualmodesareperfectlycorrelatedorasinglemodecontributestotheparticularresponsequantityofinterest.Forallothercases,thedesignresponsewouldbeexcessivelyhigh.Theaccurateprobabilityvaluesneededtospecifyeachmodalresponseevaluatedusingthefirstorderreliabilitymethodcannotbeincorporateddirectlyinaresponsespectrumanalysisduetocomputationalinefficiency.Twosimplifiedmethods,basedontotalprobabilitytheorem,aredevelopedinthispapertoovercomethislimitation.Itisshownthatthesemethodsgivedesignresponsevaluesthatareveryclosetothetruevaluesobtainedfrommultipletimehistoryanalyses.
  • Journal title
    Nuclear Engineering and Design Eslah
  • Serial Year
    2005
  • Journal title
    Nuclear Engineering and Design Eslah
  • Record number

    895929

    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=10&DC=895929