交錯桁架在循環(huán)荷載作用下的受力性能研究.pdf

1、西安科技大學碩士學位論文交錯桁架在循環(huán)荷載作用下的受力性能研究姓名：王海飛申請學位級別：碩士專業(yè)：結構工程指導教師：郭秉山2011Subject:StudyontheMechanicalPropertiesoftheSteelStaggeredtrussSystemundertheCyclicLoadingSpecialty:StructuralEngineeringName:WangHaifei(Signature)Instruct:

2、GuoBingshan(Signature)ABSTRACTSteelstaggeredtrusssystemisusedintheMultihighBuildingsuchashotelresidence.Atpresentdomesticinternationalscholarscarriedoutaseriesoftheeticalanalysisonsuchasystemithasbeenappliedabroadwidely.

3、Butalotofresearchismainlyconcentratedintheintegralityperfmancewhilelittleresearchisonthestructurecomponentsuchasbraces.Embarkingfromtheholisticresistantbehaviofthesteelstaggeredtrusssystemthispaperthoughlyresearchedtheme

4、chanicalbehaviofthebracesinsteelstaggeredtrusssystem.Ithastheextremelyimptantpracticalsignificanceregardingtheinstructiondesignwkthewidelyapplianceofthesteelstaggeredtrusssystem.Thispaperappliesmaterialnonlineargeometryn

5、onlinearfiniteelementmethod(FEM)tothoughlyanalyzethebearingcapacitystiffnessstressdistributionenergydissipationbracesfceofthesteelstaggeredtrusssysteminthemonotonicloadingcyclicloading.Themainconclusionsweregot:(1)Inthem

6、onotonicloadingthebothendsofthebraceswhichconnectedthegussetplatesarefirstlyintotheplasticregionfurtherdevelopedtobeaplastichinge.Thestressoftheendsofthebracesismuchlagerthanthecentralregionstheendsofthebraceshavetheobvi

7、ousstressconcentration.(2)Inthecyclicloadingthestaggeredtrusssystemshysteresiscurveisfusifmfullstabilitywithgoodenergydissipation.(3)Theweeklocationisthecentralsectionwithoutwebmembersofthedleframeinthestaggeredtrusssyst

8、emtheobviousstressconcentrationisbecameatthebothendsofthebracessothebracesstrengthstabilityshouldbechecked.(4)Hybridstaggeredtrusssystemisdifferentfromthedinarytruss.Itsbracesarenotsimpleaxialfcecomponentsthestrengthstab