Seismic reliability evaluation of structural systems for different soil conditions

Thisarticledescribeshowtheseismicdesignofastructureconsideringsoilconditionsisavery difficult andcomplicatedprocess. Inorder tominimizeeconomiccost followinganearthquake, the performance-based seismic design (PBSD) concept is proposed. This lets engineers design structuresbyconsideringapredefinedamountofdamagethestakeholdersarewillingtoacceptand thecorrespondingeconomicconsequences.Threeperformancelevels;ImmediateOccupancy(IO), LifeSafety(LS),andCollapsePrevention(CP)arebeingconsideredatpresent.Themajorchallenge inimplementingPBSDistheestimationoftheunderlyingrisk.Tofillthisknowledgegap,anovel reliabilityapproachisproposedbyintegratingfirst-orderreliabilitymethod,responsesurfacemethod, andadvancedfactorialconcepts.PBSDisshowcasedwiththehelpofastructuredesignedbyexperts satisfyingrecentdesignrequirements.TheresultsindicatethatPBSDguidelinesaremoredesirable thantheoldercriteria,structuresshouldbedesignedconsideringmultipleearthquaketimehistories, andsoilconditionisanimportantdesignfactor. KEywoRDS Design Time Domain Earthquake Ground Motions, Geotechnical Site Classifications, Performance-Based Seismic Design, Site-Specific Seismic Risk Analysis, Structural Reliability

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