既有线32M简支T梁桥病害整治及加固研究

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1、北京交通大学硕士学位论文既有线32m简支T梁桥病害整治及加固研究姓名：宋学英申请学位级别：硕士专业：建筑与土木工程指导教师：季文玉20081101北京交通人学专业学位硕+学位论文AbstractTbridgesplayaveryimportantroleinrailwaytraffics．Accordingtothestatisticdataroughly,thereareabout69018spansTsimplebeamamongtherailwaybridges，whichtakeup57％ofthetotalspansofrailwaycon

2、cretebridges．Muchdifferenceexistsamongdifferentrailwaysdesignedduetohistoryreasonsandevendifferentstructureobjectsonthesamerailhavedifferentbearingabilities．Problemsorevenbigtrafficaccidentsoccurredintheformerimprovementoftrainspeed．Therefore，itisurgenttoreinforcebridgesthatdon

3、’tcaterforthespeedimprovementinordertosatisfytherequirementofthepresentstateofrailwaytransportation．Inthisthesis，themechanicspropertiesoftherailwayTsimplebeambridgeareanalyzedbasedontheShaliBridgeontheJitong．Accordingtotheresultofanalysis，thereinforcementofrailwayTsimplebeambri

4、dgesisalsostudied．ThemainstudycontentsofthethesisCanbelistasfollows：(1)TheexperimentofShaliTSimpleBeamBridgeisanalyzedandstudied．Throughthedetectionandstudyofbridgepiersandpilesaswellastheresultofmechanicalparametersexperiment．Themainproblemofthebridgeisthatthelateralvibrationa

5、mplitudeexceedsthelimittosomeextent．(2)Thecalculationofcapacityofbridgepierandfoundationisstudied．accordingtobridgepierreinforcementschemesoftheShaliTsimplebeambridge．Accordingtothebridgestructuraltheoriesandcorrespondingregulation，themechanicspropertiesarecalculated．(3)themech

6、anicspropertiesoftheShaliTsimplebeambridgeareanalyzedbeforeandafterthebridgebeingreinforced．Accordingtopresenttechnologyandrequirementsoftheaction，thenecessityandfeasibilityofTechnicalTransformationisstudied．Atlast，comparativestudyofvariouspossiblereinforcementschemebytechnical

7、effectshasgone，andthemorereasonableisselected．(4)Afterreinforcementfinished，theresultofTsimplebeambridgehasbeenshownthatreinforcementeffectoftheproposedmeasuresisobvious，buttherearesomeproblemsstillneedstudy．Keywords：railwayTsimplebeambridge；treatmentsofdefects；reinforcement—II

8、～北京交通大学专业学位硕士学位论文Abstractmeasures；statisticsanalysis学位