土木工程专业英语 教学课件 作者 陈瑛 8.2 Concrete-filled Steel Tubular Structure.ppt

《土木工程专业英语 教学课件 作者 陈瑛 8.2 Concrete-filled Steel Tubular Structure.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、8.2CompositeStructureConcrete-filledsteeltubularstructureConcrete-filledsteeltubular(CFST)wasthememberwhichwasformedbyconcretefilledintosteeltubular.ClassificationCircularSquareRectangleConcreteInnersteeltubularInnersteeltubularInnersteeltubularConcr

2、eteConcreteConcreteExternalsteeltubularInnersteeltubularCirculardouble-skinConcreteExternalsteeltubularInnersteeltubularCircularandsquaredouble-skinConcreteExternalsteeltubularInnersteeltubularSquaredouble-skinSquareandrectangularCircular1+1>2Circula

3、rSquareandrectangle1+1>2Concrete-FilledSHSConcreteCoreSHSNNNN01000200030004000500060007000NsNcNs+NcNsc+....MainadvantagesInteractionbetweensteeltubeandconcreteTheoccurrenceofthelocalbucklingofthesteeltubeisdelayedThestrengthofconcreteisincreaseddueto

4、theconfiningeffectprovidedfromthesteeltubularandthestrengthdeteriorationisnotverysevereDryingshrinkageandcreepofconcretearemuchsmallerthanordinaryreinforcedconcrete.Cross-sectionalpropertiesThesteelratiointheCFSTcrosssectionismuchlargerthanthoseinthe

5、reinforcedconcreteandconcreteencasedsteelcrosssections.SteeloftheCFSTsectioniswellplastifiedunderbendingsinceitislocatedontheoutsidethesectionConstructionefficiencyFormsandreinforcingbarsareomitted,andconcretecastingisdonebytremietubeorpump-upmethod,

6、whichleadtosavingsofmanpowerandconstructionalcostandtimeConstructionalsiteremainscleanFireresistanceConcreteimprovesthefireresistanceperformance,andtheamountoffireproofmaterialcanbereducedoritsusecanbeomitted.CostperformanceBecauseofthemeritslistedab

7、ove,abettercostperformanceisobtainedbyreplacingasteelstructurebyaCFSTstructureEcologyEnvironmentalburdencanbereducedbyomittingtheformwork,andbyreusingsteeltubularsandhigh-qualityconcreteasrecycledaggregates.Apllication610mCherryblossomGuardenNo.1Buil

8、ding,LaiwuBaihualijingbuildingJinanSaigePlaza,Shenzhen(72/292m,1998）YajishaBridge,Guangzhou,200，344mBasicperformanceofCFSTConfiningeffectonconcretethecommonopinionisthatinacompositecolumnconsistingofaconcrete-filledhollowsteelsection,compressiveconfi