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形状复杂的建筑物雷击截收面积的模型和计算方法.docx

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形状复杂的建筑物雷击截收面积的模型和计算方法 Title:ModellingandCalculationMethodsforLightningInterceptionSurfaceAreaofComplex-shapedBuildings Abstract: Lightningstrikesposeasignificantrisktobuildings,causingstructuraldamage,fires,andeveninjuryorlossoflife.Designingeffectivelightningprotectionsystemsrequiresaccurateestimationoftheinterceptionsurfaceareaforcomplex-shapedbuildings.Thispaperpresentsacomprehensiveanalysisofmodellingandcalculationmethodsfordeterminingthelightninginterceptionsurfaceareaofcomplex-shapedbuildings. Introduction: Lightningprotectionsystemsareessentialinensuringthesafetyofbuildings.Whilesimplisticmodelsexistforestimatinginterceptionsurfaceareaforregular-shapedstructures,suchascuboidsorcylinders,complex-shapedbuildingspresentuniquechallengesduetotheirirregularfeatures.Thispaperaimstoexplorevariousmodellingandcalculationmethodsspecificallytailoredtodeterminetheinterceptionsurfaceareaofcomplex-shapedbuildingsaccurately. Methods: 1.Three-DimensionalCADModelling: Complex-shapedbuildingscanberepresentedusing3DComputer-AidedDesign(CAD)software.Thismethodallowsfortheprecisecaptureofintricategeometriesandfacilitatestheanalysisoflightningstrikepatterns.ByimportingtheCADmodelintoappropriatesimulationsoftware,thelightninginterceptionsurfaceareacanbeaccuratelycalculated. 2.SurfaceTessellation: Tessellationinvolvesdividingacomplex-shapedbuilding'ssurfaceintosmallerpolygonsortriangles.Thismethodsimplifiesthecomplexgeometry,makingiteasiertocalculatetheinterceptionsurfacearea.Variousmathematicalalgorithms,suchastheDelaunaytriangulationalgorithm,canbeemployedtotessellatethebuilding'ssurfaceforaccurateresults. 3.MonteCarloSimulation: MonteCarlosimulationsinvolvegeneratingrandompointsonacomplex-shapedbuilding'ssurface.Bydeterminingwhichpointsintersectwiththepotentiallightningstrikepath,theinterceptionsurfaceareacanbeestimated.Thismethodtakesintoaccounttheincidentangleoflightningstrikes,aswellastheheightandslopeofthebuilding. 4.PhysicalModelsandFieldMeasurements: Buildingmock-upsorscale