资源描述：
《北语13春学期《钢结构(一)》在线作业3》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、北语13春学期《钢结构(一)》在线作业313springsemester"steelstructure(1)〃onlinehomework3Totalscore:100testtime:-RadioexaminationRadioexaminationquestions(20questions,100points)Theminimumheightof1.beamiscontrolledbythe.A.strengthB.buildingrequirementsC.stiffnessD.overallstabilityFullmarks:5TwoThes
2、teelstructurewithelongationof.A.AB.BA.CB.DFullmarks:53.steelatlowtemperature,thestrengthofA.raiseB.declineB.invariantC.mayriseorfallFullmarks:5FourA.AB.BC.CD.DFullmarks:55.steelgradesQ235,Q345,Q390arenamedaccordingtothematerial.A.yieldpointstandardvalueB.strengthdesignvalueC.ten
3、silestrengthD.carboncontentFullmarks:56.anexcessiveamountofelementsseriouslyreducestheplasticityandtoughnessofsteel,especiallywhenthetemperatureislow,whichmakesthesteelbrittle・Theelementis.A.sulfurB.phosphorusB.carbonManganeseD.Fullmarks:5SevenA.AB.BC.CD.DFullmarks:58.inordertop
4、reventthesteelplateintheinstabilityofthestiffener,thisapproachisto・A.changesthewidthtothicknessratiooftheplateB.increasescross-sectionalareaC.changesthestressdistributiononthecrosssectionD.increasesthemomentofinertiaofthecrosssectionFullmarks:5NineA.compressionflangewidthA.fullw
5、idthcompressionflangeB.compressionflangefullwidth1/3TheeffectivewidthofD.compressionflangeFullmarks:510.inthedirectlyaffectedbythedynamicloadundertheconditionoftheusedconnectionmodeissuitablefortheA.filletweldB.plainboltsC.buttweldD.highstrengthboltFullmarks:5ElevenA.10B.20C.30A
6、.40Fullmarks:512.,underthepremiseofgivingfullplaytothestrengthofmaterials,iftheotherconditionsarethesame,theminimumheightofQ235steelbeamishminQ345,andtheHminofsteelbeam・A.greaterthanB.islessthanC.BeequaltoC.isuncertainFullmarks:5ThirteenA.AB.BC.CA.DFullmarks:5Inthelapjointof14.s
7、teelstructure,thelengthoflapjointshallnotbelessthanthesmallerthicknessoftheweldment・A.4times,andnotlessthan20mmB.5times,andnotlessthan25mmC.6times,andnotlessthan30mmD.7times,andnotlessthan35mmFullmarks:515.therearefourkindsofQ345sheetsofdifferentthickness,thedesignstrengthofthic
8、ktopplate・A.12mmB.18mmC.25mmD.30mmFullmarks:516
