建筑物表面动态测压试验研究及数值模拟

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1、南京航空航天大学硕士学位论文建筑物表面动态测压试验研究及数值模拟姓名：谢琳申请学位级别：硕士专业：流体力学指导教师：张召明20051201建筑物表面动态测压试验研究及数值模拟ABSTRACTForlong-spanbridgeslong-spacespatialstructure,high-risebuildings,high-risetower,windloadisoneofcontrolloadsforstructuredesign,besideforthemanyuseofkindsofthelightweightandhighstrengthmaterialandmanyuseof

2、glasscladding,theproblemofwindloadonthebuildingstructurebecomemoreserious.Becausetheactiveloadcriteriondon’tprovidethewindloadcalculateonthecomplicatedshapeandcircumjacentdisturbhigh-risebuildings,nowtheprimarymeanstodeterminethewindloadonbuildingsiswindtunneltest.Thedynamicpressuremeasuretechnolo

3、gyonthebuilding’ssurfacecangetratherexactwindloaddistributionofbuildings,canuseinthedesignofbuildingsstructureandglasscladding.Thispapertakesjin’aomansionandadjacentbuildingsasthestudyobject.Firstweputthestatedreducedscalemodelintheatmosphericboundarylayerwhichthetunnelsimulates,appliedthedynamicp

4、ressuremeasuretechnologyonthebuilding’ssurfacetogetthemeanandfluctuatingwindpressurecoefficient,drewoutthecontourofpressurecoefficientandanalyzeditsdistributinglawandcharacteristic.Designedaprogramwhichcanusethemeanpressurecoefficientofjin’aomansiontocalculatemeanwindloadofthewholebuildingsandloca

5、lfloor.Theintegralresultcanapplyintothepracticaldesignofconstruction,alsocancomparewiththeresultsofwindtunnelbalancetesttovalidatetheveracityofthistest.Althoughwindtunneltestisthemostimportantmeanstodeterminethewindloadofbuildings,duetothehighlydevelopmentofcomputetechnologyandCFDrecently,peoplepa

6、ymuchmoreattentiontonumericalsimulation.InthispaperIwasinvirtueoftheFLUENTsoftware,setupthegeometricalmodelofjin’aomansionandadjacentbuildings,usedNon-EquilibriumWallFunctionstodealwiththeproblemwhichcomefromthenearwall,usedRealizablek-εturbulentmodeltosimulatethesteadyflowaround3Dhigh-risebuildin

7、gs,wecangetthedistributionofmeanwindpressurecoefficientofthesurfaceofjin’aomansionandfiveaerodynamicscomponents.Theywerecomparedwiththedatafromthewindtunneltest,wefoundoutthedistancebetweentheresultofthewindtunne