the civil engineering handbook（second edition）composite steel-concrete structures

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1、51CompositeSteel–ConcreteStructures51.1IntroductionHistory•Applications•CaseStudies51.2CompositeConstructionSystemsforBuildingsCompositeFloorSystems•CompositeBeamsandGirders•Long-SpanFlooringSystems•CompositeColumnSystems51.3MaterialPropertiesMildStructuralSteel•High-StrengthSteel•Unconfin

2、edConcrete•ConfinedConcrete•ReinforcingSteel•ProfiledSteelSheeting•ShearConnectors51.4DesignPhilosophyLimitStatesDesign51.5CompositeSlabsServiceability•Strength•Ductility51.6SimplySupportedBeamsServiceability•Strength•Ductility51.7ContinuousBeamsServiceability•Strength•Ductility51.8Composit

3、eColumnsBrianUyEurocode4•AISC-LRFD•AustralianStandardsAS3600andAS4100TheUniversityofNewSouthWales,Australia51.9LateralLoadResistingSystemsCoreBracedSystems•Moment–TrussSystems•OutriggerandJ.Y.RichardLiewBeltTrussSystems•FrameTubeSystems•Steel–ConcreteNationalUniversityofSingaporeComposite

4、Systems51.1IntroductionHistoryCompositeconstructionasweknowittodaywasfirstusedinbothabuildingandabridgeintheU.S.overacenturyago.Thefirstformsofcompositestructuresincorporatedtheuseofsteelandconcreteforflexuralmembers,andtheissueoflongitudinalslipbetweentheseelementswassoonidentified[1].Compos

5、itesteel–concretebeamsaretheearliestformofthecompositeconstructionmethod.IntheU.S.apatentbyanAmericanengineerwasdevelopedfortheshearconnectorsatthetopflangeofauniversalsteelsectiontopreventlongitudinalslip.Thiswasthebeginningofthedevelopmentoffullycompositesystemsinsteelandconcrete.Concret

6、e-encasedsteelsectionswereinitiallydevelopedinordertoovercometheproblemoffireresistanceandtoensurethatthestabilityofthesteelsectionwasmaintainedthroughoutloading.Thesteelsectionandconcreteactcompositelytoresistaxialforceandbendingmoments.©2003byCRCPressLLC51-2TheCivilEngineeringHandbook,Se

7、condEditionCompositetubularcolumnsweredevelopedbecausetheyprovidedpermanentandintegralformworkforacompressionmemberandwereinstrumentalinreducingconstructiontimesandconsequentlycosts.Theyreducetherequirementoflateralreinforcementandcostlytying,aswellasprovidingeasier