土木工程专业外文翻译--高层结构与钢结构

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1、土木工程专业外文翻译一高层结构与钢结构外文原文TallingbuildingandSteelconstructionAlthoughtherehavebeenmanyadvancementsinbuildingconstructiontechnologyingeneralSpectaculararchievementshavebeenmadeinthedesignandconstructionofultrahigh-risebuiIdingsTheearlydevelopmentofhigh-risebuildingsbeganwithstruetuTa’lst

2、eelframingReinforcedconcreteandstressed-skintubesystemshavesincebeeneconomicallyandcompetitivelyusedinanumberofstructuresforbothresidentialandcommercialpurposesThehigh-risebuildingsrangingfrom50to110storiesthatarebeingbuiltal1overtheUnitedStatesaretheresultofinnovationsanddevelopment

3、ofnewstructualsystemsGreaterheightentailsincreasedcolumnandbeamsizestomakebuildingsmorerigidsothatunderwindloadtheywillnotswaybeyondanacceptablelimitExcessivelateralswaymaycauseseriousrecurringdamagetopartitionsceilingsandotherarchitecturaldetailsInadditionexcessiveswaymaycausediscom

4、forttotheoccupantsofthebuildingbecausetheirpcrccptionofsuchmotionStrueturalsystemsofreinforcedconcreteaswellassteeltakefulladvantageofinherentpotentialstiffnessofthetotalbuildingandthereforerequireadditionalstiffeningtolimittheswayInasteelstructureforexampletheeconomycanbedefinedinte

5、rmsofthetotalaveragequantityofsteelpersquarefootoffloorareaofthebuildingCurveAinFig1representstheaverageunitweightofaconventionalframewithincreasingnumbersofstoriesCurveBrepresentstheaveragesteelweightiftheframeisprotectedfromalllateralloadsThegapbetweentheupperboundaryandthelowerbou

6、ndaryrepresentsthepremiumforheightforthetraditionalcolumn-and-beamframcStructuralengineershavedevelopedstructuralsystemswithaviewtoeliminatingthispremiumSystemsinsteelTallbuildingsinsteeldevelopedasaresuItofseveraltypesofstructuralinnovationsTheinnovationshavebeenappliedtotheconstrue

7、tionofbothofficeandapartmentbuildingsFramewithrigidbelttrussesInordertotietheexteriorcolumnsofaframestructurctotheintcriorverticaltrussesasystemofrigidbelttrussesatmid-heightandatthetopofthebuildingmaybeusedAgoodexampleofthissystemistheFirstWisconsinBankBuilding1974inMilwaukeeFramedt

8、ubeTheimumef