八一路双曲混凝土拱桥加固改造技术研究

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1、中南大学硕士学位论文八一路双曲混凝土拱桥加固改造技术研究姓名：席超波申请学位级别：硕士专业：建筑与土木工程指导教师：余志武;王力力20070501ABSTRACTBridgesarchingesofcityroad,speedwayandrailway,whichplay孤importantfunctioninnationaleconomy．However,whenthebridgesconstructedandhavebeenservedforseveralyears,manyofthem叩哗variousdamagesanddisfigurementine

2、vitablybecauseofagedstructuralmaterials,morloandinorovehicleload,increasinglydeterioratedenvironmentandfunddeficitofmaintenaneo,whichresultsinloadingcapacity,stiffnessandenduranceofstructuredown,andtheir013嘲-ationconditionsdon’tmeetrequirementofsocietydevelopment．BasedOnthebridgeexi

3、stingtechnicalcondition,thediseasesofBayiRoadreinforcedCOIlCI'etoarchbridge，thenecessaryforthepassthroughofvehiclesandthetendencyofthefuturetrafficdevelopment,thispaperwillanalysisthereinforcementandtransformation'snecessityandpossibilityofBayiRoadCROSSlinesbridge．Thispaperwillalsoc

4、omparetheteelmiealeconomicefficiencyandthesocialbenefitofeachkindofreinforcementmethod,thenmaklethechooseofthereasonablereinforcementpl锄．BasedOntheexaminationresultoftheroad鲫rf如e’sdiseaseofBayiRoadCTOS8linesbridgeandtherequirementofcomfortabledriving,thispaperwillcarry011theconstruc

5、tionandtransformationtotheroadSUlflICeofBayiRoadCROSSlinesbridge．Thispaperwillalsocarry013theeffectivemonitoringtothestructul'o'$stressanddistortionintheprocessofthebridgefloor’stransformationandconstruction．Inordertogtlarautcetheslruetureendogenieforceandthedistortionlocatesinthesa

6、fescopethroughouttheprocessofthemainspan’seonstxuetionandtransformation,thearc’saxislineandthebridgef1001"$linearshapeconformstothedesignrequests，andthestructurestressfulconditionapproachesthedesignexpectsunderthedeadloads，thispaperwillearry011thestrictconstructioncontrolduringthetr

7、ansformationconstructionofthearchedbridge’smainbody．ThispaperwillstudythereinforcementconstructiontechnologyOnBayiRoadCrOftSlinesbridgeaccordingtotheconstructionplanandthecharacteristiccraftusedintheconstructionprocess，thenWeCallaccumulateexperienceforlatersimilarbridgereinforcement

8、construction．KEYWOR