西交《钢结构基本原理》在线作业

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1、西交《钢结构基本原理》在线作业ThebasicprincipleofsteelstructureinwesternChinaExamtime:100testtime:SingletopicselectionMultiplechoice(35questions,70points・)Theshaftofthespindleisin()・A.balaneethebalanceB.TheextremevalueinstabilityJumpinstabilityD.NoneoftheaboveFullmar

2、ks:2Theinstabilityofthe()formwhenthebeamlosesitsoverallstability.A.bendingB.turnC.bendtorsionBidirectionalbendingFullmarks:2Thestressstateofbrittlefailureofstructuralsteelis()A.threetothesameasthesameasthestressB.twotothesamevalueasthepositivestressC.o

3、nedirectionstresseffectD.threetotheequivalentshearstressFullmarks:2Forthebeamthatislessthanorequalto(),whenthereisnopartialpressure,thestiffeningribisnotconfigured・50A.80B.170C.250D.Fullmarks:2Theeffectsoffatiguedamageonsteelarenotsignificant.A.stressa

4、mplitudeStressthanB.A.steelgradeB.stresscyclesFullmarks:2Thesafetylevelofthestructureoftheuniformstandardsforarchitecturalreliabilityisdividedinto()levels・A.AB.twoC.threeD.fourFullmarks:2Thecompositeindexofplasticstraincapacityandsteelqualityofsteelund

5、erbendingconditionis()・plasticityColdbendingperformanceSirengthperformaneeImpacttoughnessFullmarks:2SteelstructureweldingisoftenusedintheE43xxtypeelectrode,43ofwhichis()・TheminimumstrengthofAmoltenmetaltensilestrengthThenumberoftheskinoftheelectrodeC.w

6、eldingthepowervoltagerequiredNospecificmeaningFullmarks:2TheaxialcompressionlatticecomponentUSEStheconversionratiowhentheintegralstabilityoftheimaginaryaxisiscalculated,because()・TheoverallstabilityofAstructuralcomponentishigherthantheactualabdominalco

7、mponentofthesamesectionA.considertheeffectoflowerintensityConsidertheimpactofsheardeformationA.ConsideringtheeffectofasinglelossonthebearingcapacityofthecomponentFullmarks:2Undertheactionload,thecalculationlengthofthesidefilletweldsshouldnotbegreaterth

8、an()・A.40hfB.60hfC.80hfD.120hfFullmarks:2Inthesupportofthebeamandtheupperflange,itisappropriatetosetup()・A.horizontalstiffeningribB.longitudinalstiffeningribThesupportisstiffeningD:noneoftheaboveFullmarks:212.Inthefollowingchemicaleleme