基于模糊神经网络的桥梁状态评价

基于模糊神经网络的桥梁状态评价

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时间:2019-07-02

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1、天津大学硕士学位论文基于模糊神经网络的桥梁状态评价姓名:曹甄申请学位级别:硕士专业:结构工程指导教师:韩庆华20090801AbstractMostofruralroadbridgesinTianjinwithsimplestructurearebuiltearlier.Undertheinfluenceofnaturalenvironment,overloadoftrafficload,theagingofconcretes仃ucnlreere,thehealthconditionofbridgesisdegradedconstantlyandthefunctionisdescended,

2、whichaffectthetrafficsafety.Inthiscontext,itisparticularlyimportanttoevaluatetheStatusofruralroadbridges.Combinedwiththefuzzycontrolandthenenralnetwork,fuzzyneuralnetworkcan’tonlyovercomethechoiceofalgorithms,thecertaintyofsubjection,theuncertaintyandrandomnessofappraisersubjectively,butalsocanavoi

3、dnopracticalsignificanceoftheneuralnetworkwei曲tsunderthefuzzycontr01.Inrecentyears,thefuzzyneuralnetworkisahotspotinthedevelopmentofintelligentcontrolfield,whichissuccessfullyusedinaircraR,automobile,engineeringandotherfields.Inthispaper,basedonthetheoryoffuzzyneuralnetwork,theconditionsofruralroad

4、bridgeinTianjinareassessed.Themainstudiesareasfollows.1)WiththeresearchworksofruralroadbridgescarriedoutbythegoverningdepartmentsofruralroadsinTianjin,themaindiseasesofruralroadbridgesareincludedinthescene,whicharethecracksofdeckpavement,bridgeabutmentirregularityandthestructuralcracksofupperpartse

5、tc,atthesametime,thereasonsofbridgediseasesareanalyzed.2)Fromtheanalysisofthedeckdepartment,theupperstructure,upperandsubsidiarystructure,combinedthecharacteristicsofbridgediseases,choiceoffourareassubsystemindicators,theintegratedassessmentmodeloftwolevelsofbridgetechnicalstateisbuilt,whichisusedt

6、heindexesoffouraspectssub-system.3)Dependingonthebridgehierarchicalstructureevaluationmodel,thebridgetechnicalconditionassessmentmethodologiesbasedonthefuzzyneuralnetworksisputforward.Usingself-adaptivesimulationcharacteristicsoffuzzyneuralnetwork,inputtingtheevaluatingscore,theevaluationmodelofsub

7、systemisbuilt,thenimportingeachsubsystemtechnicalconditionassessment,thesynthesizedassessmentmodelofbridgetechnologyconditionissetup,accordinglythebridgetechnicalconditioncanbegotten,andthetechnicalstategra

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