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1、13春学期《混凝土及砌体结构(一)》在线作业1（13springsemesterconcreteandmasonrystructure(1)onlinejob1）Northeastuniversity14spring13autumneastbig13springsemester"coagulation.Theconstructionofconcreteandmasonrystructure(1)Totalscore:100testtime:--SingletopicselectionSingletopicselection(15testquesti
2、ons,75points.)1.Thecalculationoftheinternalforceofthemulti-layerrigidschemehouseunderverticalloadis().A.ThewallissimplifiedtoAverticalcontinuousbeamwithwallandfoundationconsolidation.ThebuildingisthefulcrumofthecontinuousbeamB.Thewallissimplifiedtoaverticalcontinuousbeam,thewa
3、llisconnectedwiththefoundationhinge,andthebuilding(housing)iscoveredbytheunmovablehingesupportofthecontinuousbeam,whichisadiscontinuoushingebearinginthebuildingC.Thewallissimplifiedtoaverticalcontinuousbeam,thewallandthefoundationareconsolidated,andthebuildingistheelasticsuppo
4、rtforcontinuousbeamsD.Thewallissimplifiedtoaverticalcontinuousbeam,thewallisconnectedwiththefoundationhinge,andthebuildingistheelasticsupportforcontinuousbeamsFullmarks:52.Whentheprefabricatedcolumnofthesingle-storeyfactoryischecked,theself-weightofthecolumnshouldbemultipliedb
5、ythepowerfactor().A.1.2B.1.4C.1.5D.1.7Fullmarks:5points3.Inthefollowingstructuresorcomponentstates,notexceedingthecapacitylimitstateis()A.structureoverturningB.StructuralslipC.ComponentdeflectionexceedsthespecificationrequirementD.componentlossstabilityFullmarks:5points4.Accor
6、dingtotherequirementsofmasonryquality,theaveragehorizontalmortarshallnotbelessthan().A.90%B.80%85%C.D.70%Fullmarks:5points5.Themaindifferencebetweenplastichingeandidealhingeis()A.Theplastichingecannotrotate,andtheidealhingecandoinfiniterotationintwodirectionsB.Theidealhingeisc
7、oncentratedatapoint,soitcanonlybearthebendingmomentofacertainnumber,whiletheplastichingecanwithstandgreaterbendingmomentC.Theplastichingeisaone-wayhingewhichcanonlydofiniterotationinthedirectionofthebendingmoment,andthesizeoftherotationislimitedbythelimitdeformationofthemateri
8、alD.Theplastichingeisconcentratedatonepoint,andtheidealhingei
