雨课堂学堂在线学堂云Seismic Design of Building Structures(重庆大学)单元测试考核答案

第1题Amongthefollowingearthquakes,whichonedidoccuratedgeoftectonicplate?()A2008Wenchuanearthquake,Sichuan,ChinaB1995Kobeearthquake,JapanC1994Northridgeearthquake,California,USAD1960Chileearthquake正确答案：BCD第2题Amongthefollowingdescriptions,whichoneiscorrectaboutmagnitudeandintensityoftheearthquake?()ATherearesomedifferentvaluesofmagnitudeforacertainearthquake.BThereareonlyonevalueofintensityforacertainearthquake.CGenerally,thelargerthemagnitudeofanearthquakeis,thehigheritsintensityis.DGenerally,foracertainearthquake,thesmallerthedistancefromepicenteris,thehigheritsintensityis.正确答案：CD第3题Generally,seismichazardsmaybemoreseverecausebyreversefaultthannormalfault.()第4题Generally,hazardsmaybemoreseverecausebydeep-focus-earthquakethanshallow-focusearthquakeontheassumptionthattheirmagnitudeisequal.()第1题Whichoneiscorrectforseismicfortification?()AObjectivesofseismicfortificationis,nodamageunderfrequentearthquake,Repairableunderoccasionalearthquake,nocollapseunderrareearthquake.BFormoderateearthquake,itsbasicintensityisdeterminedaccordingtotheseismiczoningmap,theprobabilityofexceedancein50yearsis10%.CTheseismicdesignlevelisequalforahospitalstructureandanordinaryresidentialbuilding.DForabuildingassignedtoseismiccategoryA,theearthquakeactionshallbehigherthanthatofthelocalfortificationintensitycomparedwithanordinaryresidentialbuilding.正确答案：ABD第2题Forabuildingstructure,objectivesofseismicfortificationare?()AThestructureshouldbedesignedstrongenoughtoresistanyearthquakesinthefuture.BThebuildingswillnodamageoronlyslightlydamagewithcontinueserviceablewithoutrepairunderfrequentearthquakeCThebuildingswilldamagewithcontinueserviceableafterordinaryrepairorwithoutrepairunderoccasionalearthquakeDThebuildingswillnocollapsenorsufferdamagethatwouldendangerhumanlivesunderrareearthquake.正确答案：BCD第3题Amongthefollowingdescriptions,whichoneiscorrect?()AEarthquakeisoneofunavoidablenaturaldisasters.BGreatearthquakesoccurredrepeatedlyinsomecertainareas.CCircum-Pacificseismicbeltisthelargestoneintheworld.DEurasianseismicbeltisthelargestoneintheworld正确答案：ABC第4题ABuildingshouldhavedifferentresistancecapacityunderdifferentintensityandfrequencyofearthquakeduringitsserviceablelife()第5题Primaryobjectiveofseismicfortificationistominimizeseismicstructuraldamage,ensurelifesafetyandpropertywithoutconsideringeconomiccondition.()Test第1题Whichoneiscorrectaboutpropertiesofseismicaction?()AseismicactionisoneofdirectloadsBSeismicactionisrelatedtointensity,focaldistance.CSeismicactionisrelatedtodynamicparametersofthestructure,suchasvibrationperiodanddamping.DSeismicactionisindependentofdynamicparametersofthestructure.正确答案：BC第2题Thebasicpropertiesofseismicdesignareasfollows:()AUncertaintyofgroundmotions,analyticalmodelandmethod.BSeismicconceptualdesignisregardedmoreimportantthanseismiccalculation.CThefailuremodeofstructureisalsoveryimportantinseismicdesign.DThestrength,stiffnessandductilityaremainfactorsforseismicdesign.正确答案：ABCD第3题Nonlinearperformanceofstructuresisnotconsideredinprocessofseismicdesign.()Test第1题Multipleseismicdefenselinesofmoment-resistingframeisinfillwalls,beamsandcolumnsinsequence.()第2题Thestorystiffnessofa5-storystructureis85,100,80,80and80frombasetotoprespectively,thenthestructureshouldbedeterminedasstiffnessirregularity()第3题Infilledwallsarealwaysbeneficenttoseismicperformanceofstructure,sotheirinfluencemaybenotconsideredinseismicdesign.()Test第1题Whichoneiscorrectaboutgroundmotions?()AEarthquakewavesexistinformofbodywavesandsurfacewaves,andpropagationspeedofbodywaveisfasterthanthatofsurfacewave.BTheamplitudeofsurfacewaveislargerthanbodywave.CThesurfacewavescanbeconsideredassecondarywavesformedbybodywaveswhichreflectedandrefractedmanytimesthroughtheinterfaceofearthmediumlayers.DGenerally,surfacewaveshavepropertiesoffasterattenuation,smalleramplitudeandhigherfrequencycomparedwithbodywaves.正确答案：ABD第2题Whichoneiscorrectaboutseismicwaves?()ASeismicwavesexistinformofbodywavesandsurfacewaves,andpropagationspeedofbodywaveisfasterthanthatofsurfacewave.BBodywavesexistinformofPwavesandSwave,andthevibrationdirectionofparticleisperpendiculartothepropagationdirectionforPwave.CSurfacewavesexistinformofRayleighwavesandLovewaves.DTheamplitudeofaRayleighwaveisusuallygreaterthanthatofSwave.正确答案：ACD第3题Forabodywave,itsvibrationdirectionofmassisconsistentwiththepropagationdirection()Test第1题Thethreemajorparametersofgroundmotionincludethefollowing()ADurationtimeBAmplitudeCFrequencyDEpicenterdistance正确答案：ABC第2题Thegroundmotionisnotonlytheoutputoftheseismicwaveformedonthesurfacethroughthepropagationoftheearthmediumintheprocessofearthquake,butalsotheinputorexcitationthatcausesthevibrationofthestructure.()第3题Theresponsespectrumofagroundmotionreflectsitspropertyoffrequency()第4题PGA,PeakGroundAccelerationisoneofparameterstodescribethefrequencyofagroundmotion.()第5题Thelargerthemagnitudeis,thelargertheamplitudeofthegroundmotionis,andthefrequencycomponentofshortperiodisricher.()第6题Thedistancefromtheepicentermayaffecttheamplitudeandfrequencyofgroundmotions()

Test第1题Foracertaingroundmotion,ifitspeakgroundmotionaccelerationis10.0,thenSa(0),thevalueofitsresponsespectrumatT=0is?()A1.0B10.0C0.0D2.25第2题Amongfollowingdescriptionsaboutresponsespectraofacertaingroundmotion,whichoneiscorrect?()AThelargerthedampingratioofthesystemis,thesmallerSa(0)is.BThevalueofresponsespectraofagroundmotionisindependentofPGA.CThelargerthedampingratioofthesystemis,thesmallerSa(T)is.DResponsespectraofagroundmotionconsistsof4smoothedcurves.第3题ForaSingle-Degree-Freedomsystemunderearthquakeexcitation,whichforcesareactedatMassofsystem?()AElasticrestoringforceBInertiaforceCDampingforceDAppliedload正确答案：ABC第4题AmongfollowingdescriptionsaboutseismicelasticresponseofaSingle-DegreeFreedomsystem,whichoneiscorrect?()AAssumingthatotherconditionsremainunchanged,thelargerthestiffnessofthesystemis,thesmallerthenaturalvibrationperiodofthesystemis.BAssumingthatotherconditionsremainunchanged,thelargerthedampingratioofthesystemis,thesmallerthemaximumaccelerationofthesystemis.CThemaximumaccelerationofthesystemisonlyrelatedtothepeakaccelerationofgroundmotion.DAsthestiffnessofthesystemapproachesinfinity,themaximumabsoluteaccelerationofthesystemapproachesthepeakaccelerationofthegroundmotion.正确答案：ABD第5题Inertiaforceisproportionaltomassandaccelerationofsystem()

第6题6Thevibrationperiodofsystemcanbedeterminedwithoutconsideringdampingforordinarybuildingstructure.()Test第1题InChinaCodeforseismicdesignofbuildings,whichonesareusedtoclassifysites?()AThesiteoverlyingdepth.BImpedanceratioofrock.CEquivalentshear-wavevelocityofsoil.Dthestiffnessofthestructure.正确答案：AC第2题Thecharacteristicsperiod,Tgisdeterminedaccordingtothefollowingones?()Athevibrationperiod.Bsiteclassification.Cseismicaction.Dthedesignseismicgroup.正确答案：BD第3题Whichoneiscorrectaboutseismicdesignspectrum?()AItsx-coordinateisthevibrationperiodBItsx-coordinateistime.CItsverticalcoordinateistheseismicinfluencecoefficientDthespectrumvalueis0whenx-coordinateis0.正确答案：AC第4题WhichinformationisneededtocalculateseismicactionunderfrequentearthquakeforabuildinglocatedinChongqingUniversity?()ATherepresentativevalueofgravityload.BSiteclassification.CDampingratio.DThevibrationperiodsofthebuilding.正确答案：ABCD第5题Thesiteislocationofengineeringprojects,ithavesimilarcharacteristicsofresponsespectrum.Itsareaisaboutafactory,communities,villagesorareamorethan1.0squarekm.()第6题Ingenerally,thesiteoverlyingdepthdisthedistancefromgroundsurfacetoasoil-layerlevelwhichanyprofileundersuchlevelofsoilhavingtheshear-wavevelocitymorethan500m/s.()7.Theequivalentshear-wavevelocityofsoilisaveragevelocityoveralllayerwithinthesiteoverlyingdepth.(×)第7题InChinacode,thesiteisdividedintofourclasswhichisI,II,IIIandIVrespectively.Generally,thesiteofIIissofterthanofIII.()第8题Generally,thegreaterdampingratiois,thegreaterthespectrumvalueis.()Test第1题Fora3-degreeoffreedomsystem,itsmassm1,m2andm3are200,200and150respectively,the2ndmodevectorare0.516、-0.838and1.0respectively,thenthemodeparticipationcoefficientis?()A-0.249B0.817C1.224D0.249第2题Whichreasonisappropriatewhyadditionalearthquakeactionattopshallbeconsideredusingbaseshearmethod?()AthebaseshearisalwayssmallerthanactualvalueBtoconsiderthewhippingeffectatthetopChighmodesarenotconsideredbybaseshearmethodDtoconsiderthedamageofbuildingstructures第3题ForaMDOFsystem,whichoneisneededtocalculateitsvibrationfrequencies?()Athemassmatrix[M]Bthedampingmatrix[C]Cthestiffnessmatrix[K]Dthevibrationmodes正确答案：AC第4题AmongfollowingdescriptionsaboutFji=GiαjγjXji,seismicactionofjthmodeatithstory,whichoneiscorrect?()AthevalueofFjiisnotrelatedtodynamicparametersofthesystemBthevalueofFjiisrelatedtodampingratioofthesystem.CthevalueofFjiisrelatedtoproductofGiandXjiDthehigherthedampingis,thegreaterthevalueofFjiis正确答案：BC第5题Amongfollowingdescriptionsaboutscopeofbaseshearmethod,whichoneiscorrect?()Anothigherthan40m,mainlyhavesheardeformationoraratheruniformdistributionofmassandstiffnessalongtheheightdirection.Bnothigherthan40m,mainlyhavesheardeformationandaratheruniformdistributionofmassandstiffnessalongtheheightdirection.Csimilarasasingle-masssystemDImportantbuildingwhichheightis60m正确答案：BC第6题Amongfollowingdescriptionsaboutmode-decompositionresponsespectrummethod,whichoneiscorrect?()ASRSSeffectcombinationmethodispermittedtouseforstructureswhentorsionaleffectsarenotconsidered.BBaseshearmethodcanbeconsideredassimplificationofmode-decompositionresponsespectrummethod.Cdifferentnumberofmodesisrequiredtocombineitseffectfordifferentbuildingstructurestocalculateseismicresponseusingmode-decompositionresponsespectrummethod.DCQCeffectcombinationmethodisrequiredtouseforstructureswhentorsionaleffectscannotbeignored正确答案：ABCD第7题IntheequationofmotionforaMDOFsystem,themassmatrix[]isdiagonalmatrix,thestiffnessmatrix[]isapositivedefinitematrix,anddampingmatrix[]isdefinedaslinearcombinationof[]and[]whichisnamedRayleighdamping.()第8题Theelasticrestoringforceonlydependsonthedriftofthismass,andhasnothingtodowiththelateraldriftofothermasses.()第9题Foreachmode,thecorrespondingmodevaluesofeachparticlearenotunique,buttheratioofmodevaluesofeachparticleisunique.()第10题Fora2-degreeoffreedomsystem,itsmassmatrixis{m1,m2}T={1.5,1.0}T,the1stmodevectoris{1.0,2.0},the2ndmodevectoris{1.0,-1.5}T,Sothemodesaboutmassmatrix[]isorthogonal.()第11题ThenumberofvibrationfrequenciesforaMDOFsystemisequaltoitsnumberofdegreeoffreedom.()第12题ThevibrationfrequenciesofaMDOFsystemdonotdependonitsinitialconditionswhichresultinfreevibration.()第13题Whenthestructureisvibratedbyexternalinterferenceforce,boththenaturalfrequencyandthevibrationamplitudeofthesystemwillchangedependingontheforce.()第14题Generally,allmodesarerequiredtocombinetocalculatetotalseismiceffectofthestructurewhenSRSScombinationmethodisadopted.()第15题Usingmode-decompositionresponsespectrummethod,themaximumseismiceffectofaMDOFsystemistakenasthesumoftheabsolutevaluesofthemodeeffects.()第16题Whenthebaseshearmethodisused,theearthquakeactioneffectsofpenthouse,parapetwallandchimneyontheroofshouldbemultipliedbyanenhancementcoefficientof3,whileitisnotrequiredwhenmode-decompositionresponsespectrummethodisused.()第17题Thebaseshearmethodispermittedtocalculateseismicactionfor20-storyRCshear-wallstructure.()Test第1题Tocalculateverticalearthquakeactionfortallbuildings,howmuchmaytotalequivalentgravityloadofthestructurebetakenas?()A65%oftherepresentativevalueofitsgravityloadB75%oftherepresentativevalueofitsgravityloadC85%oftherepresentativevalueofitsgravityloadD100%oftherepresentativevalueofitsgravityload第2题Inthefollowingstructure,whichonesaremostaffectedbyverticalearthquakes?()AChimneyBhigh-risebuildingsCswimmingpoolDTheoverhangofalargesportsstadium正确答案：ABD第3题Inthefollowingstructure,whichonesarerequiredtotakeintoaccountofverticalearthquakeactionbyChinadesigncode?()Athelarger-spanstructureinIntensity8or9zoneBthelong-cantilevercomponentinIntensity8or9zoneCToweringstructureinIntensity8or9zoneDthehigh-risestructureinIntensity9zone正确答案：ABCD第4题Tocalculateverticalearthquakeactionfortallbuildingsandtowerstructures,whichmethodscanbeadopted?()AformulasimilartobaseshearmethodBtimehistoryanalysismethodCmode-decompositionresponsespectrummethodDgravitycoefficientmethod正确答案：ABC第5题Theshapeofresponsespectrumofverticalearthquakesissimilartotheoneofhorizontalearthquakes.()第6题Tocalculateearthquakeactionusingresponsespectrummethod,thedesignspectrumisthesameeitherforhorizontalorverticalearthquake.()第7题Theverticalseismicinfluencecoefficientmaybetakenas65%ofthehorizontalseismiccoefficient.()Test第1题Whichcombinationprincipleshallbeadoptedtocombineseismiceffectofeachmodewhenmode-compositionresponsespectrummethodisusedfor3-Dstructures?()AlinearsuperpositionmethodBSRSSCCQCDSumofabsoluteeffectofeachmode第2题Whenmode-compositionresponsespectrummethodisusedtocalculatetorsionaleffectofastructure,howmanymodesshallbecombined?()AthefirstthreemodesBthefirstsixmodesCthefirst9-15modesDatleast18modes第3题AssumingthatseismictorsionaleffectofunidirectionalearthquakeactionsintheXorYdirectionisgiven,howcanweobtainthetorsionalcouplingeffectunderbi-directionalhorizontalearthquakeactions?()AlinearsuperpositionmethodBSRSSCCQCDSumofabsoluteeffectineachdirection第4题Toestablishtheequationofmotionfor3-dimensionstructureconsideringtorsionaleffect,whichassumptionsareused?()Athediaphragmisabsolutelyrigidinitsownplane,whileitsout-planerigiditycanbeignored.Bthestiffnessofcomponentsinitsownplanemaybetakenintoaccount,whileitsout-planerigiditycanbeignored.CAllmassesofstructurearelumpedateachfloor.DThetorsionalstiffnessofcomponentitselfmaynotconsidered.正确答案：ABCD第5题Whatisthecauseoftheseismictorsionaleffectofspatialstructure?()AThegroundmotionincludestorsionalcomponent.BTheaccidentaleccentricityexistsduetorandomofconstructionandservice,anditmayresultinthatthecenterofmassdoesnotcoincidewiththestiffnesscenterevenforstructureswhichplaneconfigurationisregular.CThecenterofmassdoesnotcoincidewiththestiffnesscenterbecauseofirregularityinplaneorverticalconfiguration.DTherearetoomanystoriesandtoohighforthestructure.正确答案：ABC第6题Forananalyticalmodelofspatialstructureconsideringtorsionaleffect,whichvariablesareusedtodescribefreedomofeachfloor?()ATherotationabouthorizontalaxialXBTherotationaboutverticalaxialCTherotationabouthorizontalaxialDThetranslationaldisplacementabouthorizontalaxialXand正确答案：BD第7题Thetorsionalcouplingeffectunderbi-directionalhorizontalearthquakeactionsshallbeconsideredforstructurewithtorsionalirregularity.()第8题Foraparticularlyirregularstructure,seismicresponseunderbi-directionalhorizontalearthquakeactionsmaybe1.3timesofunidirectionalearthquakeactions()第9题Foracommonregularstructure,itispermittedtoconsiderseismicresponseunderunidirectionalearthquakeactions.()第10题Forastructureswithtorsionalirregularity,seismicinternalforceexistsonlyinthedirectionofearthquakeaction.()Test第1题Amongthefollowingvalueofpeakgroundacceleration,whichisappropriatefortimehistoryanalysisofstructurelocatedinthezoneofIntensity7,0.1gunderfrequentearthquakelevel?()A0.035gB0.1gC0.2gD0.4g第2题AccordingtoChinacode,seismicdesignshallbedoneforbuildingstructureslocatedinthezonewhichbasicintensityisnotlessthan6.()第3题Thetimehistoryanalysismethodshouldbeusedintheseismicdesignofsuperhigh-risebuildingsratherthanthemodedecompositionresponsespectrummethod.()第4题Whenabuildingstructureissubjectedtothree-directionalearthquake,theratiobetweentheparametersineachdirection,suchaspeakaccelerationormaximumresponsespectrum,isusuallyX:Y:Z=1:1:1.()第5题ItisrequiredbyChinacodethatallbuildingstructuresshallbedesignedusingbothmodedecompositionresponsespectrummethodandtimehistoryanalysismethod.()第6题Inordertoensurethestructuralsafety,thehorizontalseismicshearforceofeachfloorshouldnotbelessthanthelimitvalueofthecode.()第7题Thehorizontalseismicactionunderfrequentearthquakebasedontherigidfoundationmodelisusuallysmallerthanbasedonthesoil-structureinteractionmodel.()Test第1题Infirst-stageseismicdesign,which