钢结构ISO标准术语精选.docx
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钢结构ISO标准术语精选.docx
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钢结构ISO标准术语精选
1不懂1
2疑问29
3掌握32
1不懂
AASHTO(AmericanAssociationofStateHighwayandTransportationOfficials)
Aregulatoryorganizationwhichgovernsthedesignandspecificationsofhighwaybridges.
ADL
Abbrevationfor'AfterDeadLoadisApplied'.
AFF
Abbrevationfor'AboveFinishFloor'.
Amplitude
Ameasureoffloorvibration.Itisthemagnitudeortotaldistancetraveledbyeachoscillationofthevibration.
AxialStrutLoad
Astructuralmemberdesignedtotransferaaxialtensionorcompressionloadonly.
BallastRoof
Aroofwhichhasselectedmaterial,suchascrushedstone,placedonitssurfacetoholddowntherooffromwindforces.
BasePly
Isonelayeroffeltfastenedtothedeckoverwhichabuilt-uproofisapplied.
Basement
Anyfloorbelowthefirststoryinabuilding.
Batten
Asmallpieceofangleorplateweldedtotheheelsofatwoanglewebmemberoranytwoparallelcomponentstotiethemtogetherandusuallylocatedatthemiddleofthemember.
Bay
Thedistancebetweenthemainframesofabuilding.
BearingWall
Awallwhichissupportinganyverticalloadsi2nadditiontoitsownweight.
BevelCut
Asinglecutmadeatanangletothememberlength.SeeMiterCut.
BG-TypeJoistGirder
AtypeofJoistGirderwherejoistsarelocatedatallpanelpointswhereverticalwebsanddiagonalwebsintersectthetopchord.
Bifurcation
Thephenomenonwherebyaperfectlystraightmembermayeitherassumeadeflectedposition,deflectthentwistoutofplane,ormayremaininanundeflectedfiguration.
BOCA(BuildingOfficialsandCodeAdministratorsInternational,Inc.)
Aminimummodelregulatorycodefortheprotectionofpublichealth,safety,welfareandpropertybyregulatingandtrollingthedesign,struction,qualityofmaterials,use,occupancy,locationandmaintenanceofallbuildingsandstructureswithinajurisdiction.ItsservesprimarilytheNorthCentralandNortheastUnitedStates.
BottomBearing
Abearingditionwherethejoistorjoistgirderbearsonitsbottomchordandnotatanunderslungdition.
BottomChordExtension(BCX)
Thetwoangleextendedpartofajoistbottomchordfromthefirstbottomchordpanelpointtowardstheendofthejoist.
BowStringJoist
Anon-standardtypeofjoistwherethetopchordiscurvedandthebottomchordisstraightorlevel.
Bracket
Astructuralsupportattachedtoacolumnorwallonwhichtofastenanotherstructuralmember.
BridgeCrane
Aliftingsystemwhichhasahoistthatmoveslaterallyonabeamorothermemberwhichtheninturnmoveslongitudinallyonarunwaymadeofbeamsandrails.
BridgingAnchor
Anangleorbentplateattachedtoawallwherethebridgingwillbeattachedoranchored,eitherbyweldingorbolting.Theendsofallbridginglinesterminatingatwallsorbeamsshallbeanchoredthereto.
BridgingClip
Asmallpieceofangleorplatewithaholeorslotthatisweldedtothetopandbottomchordanglessothatbridgingmaybeattached.
BridgingDiagram
Adiagramoftheprofileofajoistusedtoshowthenumberandlocationoftherowsofbridging.
Built-UpRoof
Atypeofroofcomposedoftwoormorelayersofalternatingfelt,tarandasphalt.
Built-UpSection
Astructuralmembermadeupfromindividualflatplatesweldedtogetheroranystructuralmetalelementsthatareweldedorboltedtogether.
Camber
Camberisanupwardcurvatureofthechordsofajoistorjoistgirderinducedduringshopfabricationtocompensatefordeflectionduetoloadingditions.Note,thisisinadditiontothepitchofthetopchord.
Canopy
Aprojectingmemberthatissupportedatoneendonly.
CantedSeat
Aseatwhichisslopedperpendiculartothememberwhichmostjoistmanufacturesdonotdo.Usuallythesteeltractorfurnishesabentplateshimtoprovidelevelbearingfortheseat.
Catwalk
Suspendedstructuralframingusedtoprovideaccesstoandbetweenareasbelowaroofandaboveafloor.
CeilingExtension
Issimilartoabottomchordextensionexceptthatonlyoneangleofthejoistbottomchordisextendedfromthefirstbottomchordpanelpointtowardstheendofthejoist.
CenterlineSpan(orCenter-to-Center)
Atheoreticalspandefinitionwhichisthedistancebetweentheactualcenterlinesofabeam,column,joist,orjoistgirder.
Centroid
Thepointinamemberattheintersectionoftwoperpendicularaxessolocatedthatthemomentsoftheareasonoppositesidesofanaxisaboutthataxisiszero.
Channel
Ahotrolledstructuralshapethelookslike"[".ThereareAmericanStandardChannelsdesignatedby(C)andMiscellaneousChannelsdesignatedby(MC).
Cladding
Theexteriorcoveringofthestructuralmembersofabuilding.
Clevis
AU-shapedyokewithinternalthreadsinoneendwhichcanbeattachedtoathreadedrodandtheotherendanectionwithaholeusedforapinorboltattchment.
ClosureStrip
Afloordeckaccessorymadeofgagemetalwhichisplacedovertheendsofdecksothatcretecannotrunoutoftheflutesofthedeck.
Coefficientof(Linear)Expansion
Thechangeinlength,perunit,forachangeofonedegreeoftemperature.
CollateralLoad
Alladditionaldeadloadsotherthantheweightofthebuilding,suchassprinklers,pipes,ceilings,andmechanicalorelectricalcomponents.
CompactSection
Asteelsectionwhoseflangesmustbetinuouslynectedtothewebsandthewidth-thicknessratiosofitscompressionelementcannotexceedthelimitingwidth-thichnessratiosdesignatedintheAISCManual.
ventionalFraming
Framingusingventionaljoist,beams,columns,masonrywalls,etc.insteadofframingusedinMetalBuildingstruction.
Coping
Theprocessofremovingcertainsectionsofastructuralsteelmembertoalloweasierfituptothesupportingstructuralmember.
Coverage
Thewidthofadecksheet,i.e.,30inchesor36inches.
Creep
Atime-dependentdeformationofastructuralmemberunderasustainedstantload.
Cricket
Aridgeordrainagedivertingroofframing.
CrimpedAngleWeb
Aregularangelwhoseendshavebeen'crimped'intheshapeofa'U'whoseout-to-outdistanceisusuallyoneinch.Theactualcrimpedportionoftheangleisonlyafewinchesoneachendandtheendisinsertedbetweentoporbottomchordmemberstobewelded.
Curb
Araisededgeofacretefloorslaborsupportforamechanicalunit.
Curvature
Therotationperunitlengthofamemberduetobendingforces.
Cut-List
Alistofcomponentswithdimensionsusedforfabricationandaccountingpurposes.SeeBillofMaterials.
Damping
Forfloorvibrations,itistherateofdecayofamplitude.
DeckType
Thespecifictypeofdecktobespecified,suchasType"B"WideRib,Type"F"Intermediate,Type"N"DeepRib,Type"A"NarrowRib,Composite,Cellular,etc.
DepthofJoist
Theout-to-outdistancefromthetopofthetopchordtothebottomofthebottomchordtakenasomereferencelocation,usuallyatthemidspanofthejoistorjoistgirder.
DiagonalBridging
Twoanglesorotherstructuralshapesnectedfromthetopchordofonejoisttothebottomchordofthenextjoisttoforman'X'shapewhosel/rratiocannotexceed200.Thebridgingmembersarealmostalwaysnectedattheirpointofintersection.
DiaphragmAction
Theresistancetoarackingaffectorin-planeshearforcesofferedbyroofdeck,panels,orotherstructuralmemberswhenproperlyattachedtoastructuralframe.
DownstandingLeg
Thelegofastructuralanglewhichisprojectingdownfromyouwhenviewing.
Drift
Thelateralmovementordeflectionofastructure.
DriftIndex
Theratioofthelateraldeflectiontotheheightofthebuilding.
DriftPin
Ataperedpinusedduringtheerectionprocesstoalignholesinsteelmemberswhicharetobenectedbybolting.
Duct
Anytube,pipeorotherduitbywhichairorfluidistransfered.
DuctOpening
Theroundorsquareopeningrequiredthroughthewebsystemofajoistorjoistgirdertoallowpassageofaduct.
EdgeAngle
1)Astructuralanglethatisnectedaroundtheedgeofajoistextensionorothermember2)AnangleusedaroundthesidesofafloortotainthecretewhenitisbeingpouredwhichisalsocalledaPourStop.
EdgeStrip
Thewidthorregionaroundtheedgesofabuildingwhereupliftvaluesarehigherthanintheinterioroftheroof.
EffectiveDepth
Thedistancefromthecentroidofthetopchordtothecentroidofthebottomchord.
EffectiveLength
Theequivalentlength,KL,usedincompressionformulas.ThismethodestimatestheinteractioneffectsofthetotalframeonacompressionmemberbyusingKfactorstoequatethestrengthofaframedcompressionmemberoflengthLtoanequivalentpin-endedmemberoflengthKLsubjecttoaxialloadonly.
EffectiveLengthFactor(K)
Theratiobetweentheeffectivelengthandtheunbracedlengthofamembermeasuredbetweencenterofgravitiesofthebracingmembers.Kvaluesaregivenforseveralidealizedditionsinwhichjointrotationandtranslationarerealized.
EffectiveMomentofInertia
Themomentofinertiaofthecrosssectionofamemberthatremainselasticwhenpartialplastificationtakesplace.SeeMomentofInertia.
EffectiveWidth
Thetransversedistanceindicatingtheamountofslabthatactsinjuctionwiththesupportingmember.
Embedment
Asteelmembersuchasaplate,bolt,stud,orbarcastintoacretestructurewhichisusedtotransmitappliedloadstothecrete.
EndBay
Thebaywhichislocatedfromtheendofabuildingtothefirstinteriormainframe.
EndDiagonalorWeb
Thefirstwebmember
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