美国国际学术会议PPT.pptx
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美国国际学术会议PPT.pptx
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1,ASCEEarthandSpaceConference,2016,Reporter:
Institution:
Date:
3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Outline,Introduction,TheEstablishmentofthe3DGeospatialFunctionmonitoringmodel,TheSolutionofthe3DGeospatialFunctionmonitoringmodel,CaseStudy,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Part1Introduction,1Introduction,Themonitoringmodelofarcdamdeformationbasedonmonitoringdataprovidesbasisfortheevaluationofarcdamsafety.Inthetraditionalmonitoringmodelofarcdamdeformation,waterlevelcomponent,temperaturecomponent,andtimelinescomponentareusedtoreflectarcdamdeformationasfollows:
Whereisthewaterlevelcomponent,isthetemperaturecomponent,andisthetimelinescomponent.,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,1Introduction,Thewaterlevelcomponent:
Whereisthecoefficientofwaterlevelandisthewaterlevel.Thetimelinesscomponent:
Whereandaretheregressioncoefficientsandisthetimefactorfromthestartingdaytotheanalyzingday,1Introduction,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,1Introduction,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Forthetemperaturecomponent,ithastwotypes:
(1)Sincethetemperaturechangeinarcdamlagsbehindtheenvironmentaltemperature,andthetemperaturecomponenthasthelinearrelationshipwiththetemperatureofconcrete.Thelinearcombinationofmultipreviousaveragetemperatureisusedtoshowthetemperaturecomponentasfollows:
Whereistheregressioncoefficientandistheaveragetemperatureinthepreviousdays.Forarcdams,i=1,2,3,4.
(2)Consideringthattheinnertemperatureofarcdamshowsthesimpleharmonicmotionwiththeenvironmentaltemperatureandlagsbehindwiththeenvironmentaltemperature,andthetemperaturecomponenthasthelinearrelationshipwiththetemperatureofconcrete.Thetemperaturecomponentisexpressedasthelinearcombinationofharmonicfunctionwithdifferentperiods:
Whereandaretheregressioncoefficients,andisthetimefromthestarteddaytotheanalyzingday,oftenequalsto2.,1Introduction,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Therefore,thetraditionalmonitoringmodelofarcdamdeformationisgivenasfollows:
orHowever,theyaredifficulttodepictthedeformationofarcdamcausedbytemperaturevariationcomprehensively.Forexample,thelinearexpansioncoefficientofconcretewhenthetemperatureisaround0isnotfixedanditincreasesobviouslywhentheconcreteisinthefrozenstate,whichisdifficulttobedepictedbythelinearcombination.Besides,onlytheinfluenceoftheenvironmentaltemperatureandwateronthetemperaturecomponentisconsidered,andtheinfluenceofthewaterlevelonthetemperatureisnotconsidered.However,thetemperaturecomponentinducedbydifferentwaterlevelsaredifferent,andtheaverageairtemperatureorharmonicfunctionscannotbeusedtodepictthespecialchangingprocesswhenthewaterlevelincreasesfromthelowesttothenormalwaterlevel.Therefore,itisofgreatsignificancetoimprovethetemperaturecomponent.,1Introduction,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Part2TheEstablishmentofthe3DGeospatialFunctionmodel,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Aimingtotheunder-fittingproblemandthelinearformoftemperaturecomponentintraditionalmonitoringmodelmentionedabove,Integralconceptisusedtoimprovethetemperaturecomponent:
WhereAisconstant,isthecoefficientoftemperaturecomponent.Andweexpanditaccordingtobivariatepolynomialasfollows:
Threetypesofcomponentsforareusedtoreflectthedistributionoftemperaturecomponentintimeandspace,inwhichharmonicfunctionandlinearfunctionoftimeandlinearfunctionofreservoirwaterlevelHareincluded.Theharmonicfunction,thelinearfunctionoftimeandthelinearfunctionofreservoirwaterlevelreflecttheannualcyclechangeruleofwatertemperatureonairtemperature,continuouschangelawofwatertemperaturewiththechangeoftimeandthespatialdistributionofairtemperatureandwatertemperatureinthedambodyfoundation.,2TheEstablishmentof3DGeospatialFunctionModel,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Afterthesubstitutionofthethreefunctionsintoequation
(2),thefollowingequationisobtained:
Whereisconstant,-arecoefficientsofpolynomials,isthechangedtemperaturerelativetothestartedmonitoringday,istheupwaterdepth,andarethenumbersofinfluencingfactorswhichareoftenchosen2-3.Thenspacevectorsisadoptedtoestablishthe3Dgeospatialfunctionmonitoringmodel,inwhichthedeformationofdamisthefunctionofloadsetandspacecoordinates:
Whereisthereservoirwatercomponent,isthetemperaturecomponent,andisthetimelinesscomponent.,2TheEstablishmentof3DGeospatialFunctionModel,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,3DGeospatialfunctionmonitoringmodelbasedontheimprovementoftemperaturecomponent:
2TheEstablishmentof3DGeospatialFunctionModel,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Part3TheSolutionofthe3DGeospatialFunctionmodel,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,
(1)Basedonstepwiseregressionmethod,thestatisticalmodelisbuiltupandthefactorswhichinfluencedeformationprominentlyareselected.Theregressioncoefficientsoftheprominentfactorsaretreatedasthecontrolvariableandthedefinitiondomainofthecoefficientsofinfluencingfactorsisestimatedthroughthestepwiseregressioncalculation,whichisconductedtoavoidthepoorefficiencycausedbyhighrandomnessoftheinitialpopulation.
(2)DeterminingthefitnessfunctionBasedonleastsquaremethod,theobjectivefunctionisobtainedasfollows:
Whereisthemonitoreddeformation,isthecalculateddeformation,isthenorm,isthenumberofmeasuredvalues.,3TheSolutionof3DGeospatialFunctionModel,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,(3)OptimalcalculationbasedonthequantumgeneticalgorithmAfterdeterminingthefitnessfunction,codingscheme,geneticfactor,andtheendconditionareselectedtodeterminetheoptimalparametersinequation.Thecoefficientsoftheinfluencingfactorsaretransformedintothedecisionvariableandtheoptimalcalculationwasconductedaccordingtoquantumgeneticalgorithm.Thentheobtainedcoefficientsoftheinfluencingfactorsweresubstitutedintothemonitoringmodel,andthe3Dgeospatialfunctionmonitoringmodelisobtained.,3TheSolutionof3DGeospatialFunctionModel,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,Part4CaseStudy,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,4CaseStudy,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,AconcretearchdamwhichlocatesinYunnanprovince,Chinaisselectedtohaveanalysisinthispaper.Theelevationofthedamcrestis1245m,andthelowestelevationofthefoundationsurfaceis953m.Thelengthofdamcrestis901.77m,andthetopwidthandbottomwidthofcrowncantileverare12mand72.912m.Thedamheightis292m.Thenormalreservoirwaterlevelis1240.0mandthedesignfloodlevelis1238.10m,thetotalstorageis149.14108m3.Basedonthequantumgeneticalgorithmandstepwiseregressionmethod,3DgeospatialfunctionmonitoringmodelandtraditionalmonitoringmodelwereusedtofittingthemonitoringdatabetweenJuly1,2010andDecember1,2012ofthreemonitoringpointsM-1,M-2andM-3inonedamsection.,4CaseStudy,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,4CaseStudy,3DGeospatialFunctionMonitoringModelofArcDamDeformationBasedontheImprovementofTemperatureComponent,19,Thankyou!
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