专业英语―筒体结构.ppt

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1、Tube(structure)FramedtubeThisisthesimplestincarnationofthetube.Itcantakeavarietyoffloorplanshapesfromsquareandrectangular,circular,andfreeform.TheWorldTradeCenter'sTwinTowersweresomeofthefirststructurestouseaframedtubedesign.Themanycolumnsoftheframedtubecanbeseeninthish

2、orizontalcrosssection.Thetube-framedesignisanewapproachthatallowedmoreopenfloorplansthanthetraditionaldesignthatdistributedcolumnsthroughouttheinteriortosupportbuildingloads.TrussedtubeJohnHancockCenterBankofChinaTowerMassingmodelshowingtheshapeoftheBankofChinaTower.The

3、labelscorrespondtothenumberof'X'shapesoneachoutwardfacingside.BankofChinaTowerThemajorityofthegravityandlateralloadsarenormallytakenbytheoutertubebecauseofitsgreaterstrength.TubeintubeBundledTubeWillisTowerisclusteredina3×3matrixformingasquarebasewith75-metersidesWillis

4、Tower