既有鋼筋混凝土空腹式拱橋病害分析及維修加固方案研究.pdf

1、西南交通大學碩士學位論文既有鋼筋混凝土空腹式拱橋病害分析及維修加固方案研究姓名：王振領(lǐng)申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：強士中2002.3.1西南交通大學碩士研究生學位論文第1I頁AbstraotWiththedevelopmentoftheNation’SEconomic，thetrafficamountincreasedrapidlyConsideringthefactorsofdesign，constructiona

2、ndageetc，alotofatehbridgeshavebeendamagedoverthedays，goingSOfarastoinfluencetheirservice，andneedtobemaintainedorstrengthenedintime，Aimingatthissituation，certainproblemsasfollowingarestudiedcombinedwithNanbuJialingiiangRi

3、verBridgeinthethesis，whichCanbeareferenceforthelatersimilarworks(1)Fortheobviousshortcomingofthetraditionalmethodtoanalyzetheexistingarchbridge，thefiniteelementmethod(FEM)withthesoftwareALGORl2isusedtoestablishtheentirep

4、rereinforcementandpostreinforcementbridgespaceFEmodelsrespectivelyaccordingtothecharacterofexistingbridge(2)Todeterminetheworstloadcaseaccuratelyandquicklyinfluencefacesofmainsectionsateplotted。(3)Combiningtheinfluencefa

5、cewiththepll—reinforcementspaceFEmodeltheintemalforeeandthestabilityallcomputed，thenthemainreasonsofthediseaseareanalyzed(4)Accordingtotheanalysisandtheservicedemand，thepaperintroducesthestrengtheningschemeofNanbuarchbri

6、dgeandsomenewmaterialsandnewtechniquesappliedconsideringtheactualsituationinsite(5)Theinternalforceandthestabilityofthepostreinforcementconditionarealsocalculatedwiththepost—reinforcementspaceFEmodelFurthermore，thefeasib

7、il塒ofthestrengtheningschemeisdiscussed(6)Basedontheabovework，valuableconclusionsareobtainedinthepaperFEMcansimulatetheactualsituationoftheexistingbridges，andmaybeusedintotheintemalforcecomputationwidelyTheinternalforcean

8、alysismayprovidethebasistochoosetheresponsiblestrengtheningscheme，whichcouldbetakenasreferencebyotherexistingconstructionAlso，theplantingreinforcebattechniquecouldbeappliedtothestrcngtheningstructuresKeyword：archbridge，s