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ID:39402492
大小:1.24 MB
页数:55页
时间:2019-07-02
《基于模糊神经网络的桥梁状态评价》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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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