遼陽市宏偉區(qū)人民文化宮混凝土構件加固設計研究與應用.pdf

1、沈陽建筑大學碩士學位論文遼陽市宏偉區(qū)人民文化宮混凝土構件加固設計研究與應用姓名：劉明喆申請學位級別：碩士專業(yè)：建筑與土木工程指導教師：劉明200902IIAbstract碩士研究生學位論文AbstractWiththedevelopmentofeconomythefocusofbuildingsisshiftingfrommanynewbuildingstobuildingandrepairingandnowtepairingandre

2、formingofexistingbuildings.Accordingtostatisticsreformingsavesinvestmentby40%，cutsconstructiontimeby500o.recoupscapitaloutlaytwoorthreetimesfasterthanbuildingnewones.Moreovermanynewbuildingsaredamagedtodifferentextentsby

3、numerousnaturaldisasters，andcannotbeputintonormaluse.Besidesmoderndevelopmentshaveleftmanybuildingsoutdatedandunfitinfunctionanduse.Lastlytheagingofbuildingsisanirresistibleproblem.Allthesehavemadebuildingstrengtheningan

4、dreforminganincreasinglyimportantandurgent.Howtotakeeffectivestrengtheningmeasurestecoverthefunctionsofdamagedbuildingsisanurgentprojectfacingallstructuralengineerswhichalsoservesthestartingpointforthepresentresearch.1.T

5、hepapersummarizedthecharacteristicsofstrengtheningdemonstratedthepracticalsignificanceofstrengtheningofferedacomprehensiveanalysisofconcretebeams，platesandcolumns.Thepaperthroughcomparisonalsopointedthecharacteristicsand

6、applicationscopeofcommonmethodssuchassectionexpansionsurfaceshapesteelwrappingplatestressingsupportpointchanges，andsurfaceplateboundingThepaperalsointroducedsomecomputingmethodsofbendingshearingofvariousstrengtheningplan

7、s.2.Strengthenedelementsaresecond—bendingmembers，whoseworkingmechanismcausedconcretestresslappingandpriorityofsteelstresswhichresultsinenlargementofdeforma－tionandwideningcracksofnormalbeamswhentheconcreteatthetopofbeams

8、arecrackedandearlieryieldingofthesteelstressatthebottomofbeamsthannormalbeams.Theshearstresscheckingatthesuperpositionisthekeytoensuringthattheexistingandthenewstructureworkconcurrently.3.Comprehensivelyanalyzereasonsfor

9、theexistingbuildingstructure。reinforcementanditspressforcecharacteristicsafterreinforcedtakeconcrete。reinforcementforexampleandstudyonsubjectsofcoadoptionofnewand。oldconstructionmaterialsintheprocessofreinforcingconstruc

10、tionmake。basichypothesisoncalculationandanalysisapproachesofbearingsectionofreinforcingconstructiongenerallyintroducetheenlargingsection。reinforcementapproachtheprestressreinforcementapproachandsoon.Keywds:reliabilitythe