FEMA350 Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings.pdf

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1、DISCLAIMERThisdocumentprovidesrecommendedcriteriaforthedesignofsteelmoment-framebuildingstoresisttheeffectsofearthquakes.Theserecommendationsweredevelopedbypracticingengineers,basedonprofessionaljudgmentandexperience,andbyaprogramoflaboratory,fieldandanalyticalresearch

2、.Whileeveryefforthasbeenmadetosolicitcommentsfromabroadselectionoftheaffectedparties,thisisnotaconsensusdocument.Itisprimarilyintendedasaresourcedocumentfororganizationswithappropriateconsensusprocessesforthedevelopmentoffuturedesignstandardsandbuildingcodeprovisions.N

3、owarrantyisoffered,withregardtotherecommendationscontainedherein,eitherbytheFederalEmergencyManagementAgency,theSACJointVenture,theindividualJointVenturepartners,ortheirdirectors,membersoremployees.Theseorganizationsandtheiremployeesdonotassumeanylegalliabilityorrespon

4、sibilityfortheaccuracy,completeness,orusefulnessofanyoftheinformation,productsorprocessesincludedinthispublication.Thereaderiscautionedtoreviewcarefullythematerialpresentedhereinandexerciseindependentjudgmentastoitssuitabilityforapplicationtospecificengineeringprojects

5、.TheserecommendedcriteriahavebeenpreparedbytheSACJointVenturewithfundingprovidedbytheFederalEmergencyManagementAgency,undercontractnumberEMW-95-C-4770.CoverArt.Thebeam-columnconnectionassemblyshownonthecoverdepictsthestandarddetailingusedinweldedsteelmoment-frameconstr

6、uctionpriortothe1994Northridgeearthquake.Thisconnectiondetailwasroutinelyspecifiedbydesignersintheperiod1970-1994andwasprescribedbytheUniformBuildingCodeforseismicapplicationsduringtheperiod1985-1994.Itisnolongerconsideredtobeanacceptabledesignforseismicapplications.Fo

7、llowingtheNorthridgeearthquake,itwasdiscoveredthatmanyofthesebeam-columnconnectionshadexperiencedbrittlefracturesatthejointsbetweenthebeamflangesandcolumnflanges.RecommendedSeismicDesignCriteriaforNewSteelMoment-FrameBuildingsSACJointVentureApartnershipofStructuralEngi

8、neersAssociationofCalifornia(SEAOC)AppliedTechnologyCouncil(ATC)CaliforniaUniversitiesforResearchinEarthquakeEngineer