基于BIM模型的建筑风环境可靠性分析

4612()Vol.46No.12201512JournalofCentralSouthUniversity(ScienceandTechnology)Dec.2015DOI:10.11817/j.issn.1672-7207.2015.12.047BIM1,2121(1.4300702.413000)BIMBIMBIMBIMBIMTU11A1672−7207(2015)12−4732−06ArchitecturereliabilityanalysisinwindenvironmentbasedonBIMmodelTANXianliang1,2,GUANChangsheng1,LUYiwei2,TAOJun1(1.WuhanUniversityofTechnology,CollegeofCivilEngineeringandArchitecture,Wuhan430070,China;2.HunanCityUniversity,InstituteofUrbanPlanning&ArchitectureDesign,Yiyang413000,China)Abstract:Basedonthereliabilitytheoryandbuildinginformationmodeling(BIM)technology,therandomcharacteristicsofwindenvironmentwereanalyzed,thefluidstochasticcontrolequationswasderivedandstochasticfiniteelementmodelwasobtainedwithsmallparametermethod.Consideringtherandomnessofwindenvironment,theprobabilityofwindenvironmentassessmentindexandtheconstructionzonevisualizationBIMmodelingstepwereproposed.Basedontheresearch,conceptofenvironmentalcomfortandreliabilitywascreated,andthecomfortablereliabilitycalculationformulaswerederived.AccordingtoBIMmodelsandbuildingcodestandards,theBIMbuildingwindenvironmentsimulationandreliabilityevaluationmethodwereestablished.Theresultsshowthatthismethodismoreeffectiveinanalyzingthecomplexrandomeffectofwindenvironmentaroundbuildingandhasmorevalueforevaluationanddesignofwindenvironmentaroundbuilding.Keywords:architecture;windenvironment;randomeffects;buildinginformationmodeling(BIM)technology;reliability(buildinginformationmodelingBIM)CFD[1−2]Selvam[3]David[4]2015−04−102015−06−12(Foundationitem)(2015DFA90450)(2015GK3031)(KY201418)(Project(2015DFA90450)supportedbytheInternationalScience&TechnologyCooperationProgramofChina;Project(2015GK3031)supportedbytheScienceandTechnologyProgramofHunanProvinceProject(KY201418)supportedbytheScienceandTechnologyPlanofHousingandConstructionDepartmentofHunanProvince)[e-mail]12BIM4733Vauxhall2Bakert[5]2Livesey[6]Williams[7]7.3m315[8][9]BIMFaghihi[10]BIMKim[11]BIMAkbarnezhad[12]BIMLawrence[13]Kota[14]BIMPark[15]BIMGupta[16]BIMIsikdag[17]BIMLee[18]BIM3DBIMBIMBIMBIM11.11.2Navier-StokesiiiuU(Uii)Navier-Stokes0ijUx(1)()iiijjjjjUUUUvtxxxx(2)0ijx(3)()iiiiijijjjjjjUUvtxxxxx(4)Ui(1)(2)i(3)(4)1.3λ()1αλ(1)(λα0λ)αααnαii{}{}000,0{}(,,)uuxyzt00,0(,)xyztTaylor01111{}{}{}2nnnikiijijkijuuuu(5)(5)(1)~(4)0{}0jux(6)()4647340000{}{}{}({})jjjjuuuvutxxxx(7)1[{}]0nkijkux(8)011[{}]{}{}nnkkjkkuuutx011{}{}({})nnkkjjjkkuuvuxxx(9)(7)n(8)n2{u}0{u}k2BIMSketchup3DAutoCADRevit3DMAX/DWGDXFJPG3DSAutoCADARCHICADPhoenicsPhoenics22Rek-e21810PhoenicsVR()Pro/E(STL)3v5.0m/s10%10%~20%20%2.0m70%1.0m/s1.0~5.0m/s5.0m/s5.0~7.3m/s7.3m/s7.3m/s44.121)2)12BIM47354.24.2.1vdvdvdΩ={v′vdv″}(v′v″)4.2.2vrvrvr4.2.3vrvdvrvdPs=Ps(vrvd)(10)P(13)vrvdvrvdf(qrqd)(10)P=P(vrvd)=rdrdrd(,)ddvvfvvvv(11)vrvdf(vr)f(vd)vrvd(11)P(vrvd)=drdrd00[()()d]dvfvfvvvddrrd00()[()d]dvfvfvvv(12)vrvdZ=vr−vdZ),(2ZZNrd0ZvvPs=P(vrvd)=rd(0)(0)PvvPZ0()d(1/(2π))ZfzzzzZZd]})2/(){exp[(022(13)ZZzt/][β2s(1/2π)[exp(/2)]d(/)ZZZZPtz(14)rdrd22()/vvvv(15))(Φβrvrvvrdvdvvd55.135748.27m2149475m2125283m2BIM5.2BIMPhoenicssketchup3DMAXSTLSTLVRcase,FlairVRObjshapeImportCADgeometrySTLfileSTLMenuGeometryTypeWindAttributesNumerics5.3BIMPHOENICS20115.3.11.5m5.3.21)(NNW)2.4m/s(S)2.4m/srv0.10.22)100m2.7m/s2.9m/s5.3.35.0m/s0.01()4647365.4121.5m15.0m/s21.5Pa12.4m/sFig.1Nephogramofenvironmentwindspeedwheninputwindspeedis2.4m/s22.4m/sFig.2Vectorgraphofenvironmentwindspeedwheninputwindspeedis2.4m/s1()Table1Simulationresultsofoutdoorwindenvironmentundervariousofworkingconditions(averagevalues)/(m·s−1)/(m·s−1)/Pa/Pa0.184.201.755.10−3.500.204.601.925.30−2.505.0m/s1225.3m/s(14)(15)22PsTable2Pscalculatedvalueofcomfortableandreliableindicatorindifferentvariabilitywindenvironmentsσrμr/(m·s−1)σdμd/(m·s−1)βPs0.14.20.0157.9601.0000.24.20.0153.9961.0000.14.60.0153.9801.0000.24.60.0151.9900.9765.51.5m5.0m/s22.4m/s5.0m/s0.9762.7m/s2.9m/s261)BIM2)3)BIM()4)BIM12BIM4737[1]LeeS,SongD.PredictionandevaluationmethodofwindenvironmentintheearlydesignstageusingBIM-basedCFDsimulation[C]//IOPConferenceSeries:MaterialsScienceandEngineering.TempleBack:IOPPublishing,2010,10(1):1−10.[2],,.[J].,2012,4(1):71−75.HUHong,LUYang,SUJun.AnalysisonthewindenvironmentofHeixiaziBotanicalGarden[J].JournalofInformationTechnologyinCivilEngineeringandArchitecture,2012,4(1):71−75.[3]SelvamRP.ComputationofpressuresonTexasTechUniversitybuildingusinglargeeddysimulation[J].JournalofWindEngineeringandIndustrialAerodynamics,1997,67/68:647−657.[4]DavidH.Wind:Aplanner’sview[J].JournalofWindEngineeringandIndustrialAerodynamics,1978,3(2):117−127.[5]BakerCJ.Thetheoryofflowbetweentwobuildings-experimentalverificationoftheassumptionsofBritterandHunt'stheory[J].JournalofWindEngineeringandIndustrialAerodynamics,1980,6(1):169−174.[6]LiveseyF,MorrishD.Enhancedsconteststoevaluatepedestrianlevelwinds[J].JournalofWindEngineeringandIndustrialAerodynamics,1992,