:2011-11-28:(1971-),,,,,e-mail:liuhang71@sina.com.ArchitectureTechnology43120121Vol.43No.1Jan.2012、,。,。1(1),,、,;、,。(2)。,,,。(3)。2090,、、。,,。22.1,;,。1~3。1,2,1,1(1.,100039,;2.,100045,):。,,。,。:;;;;:TU746.3;TU757:B:1000-4726(2012)01-0049-04EXTERNALPOST-TENSIONINGTECHNIQUESANDAPPLICATIONSFORSTRUCTURESRETROFITTINGLIUHang1,GAOHui-zong2,YANGXue-zhong1,WUWen-qi1(1.BeijingBuildingConstructionResearchInstituteCo.,Ltd.,100039,Beijing,China;2.ArchitecturalDesign&ResearchInstituteofCRTV,100045,Beijing,China)Abstract:Theexternalpost-tensioningtechniquesusedforstructuresretrofittingareanalyzedcomprehensively.ThedesignandcalculatingmethodsofRCflexuralmembersstrengthenedwithexternaltendonsarediscussed.Meanwhile,thegeneralprofilesofexternaltendonsandthejointdetailarealsopresented.Moreover,theconstructiontechniquesofusingpost-tensioningtostrengtheningframebeamsareintroduced.Post-tensioningisalsousedasseismicretrofittingtechniquesformasonrystructuresinforeigncountriesandtherelatedprinciplesandmethodsarealsointroducedbriefly.Keywords:externalprestressing;post-tensioned;retrofitting;flexuralmembers;masonrystructure·49·4312.2,,。,,、。4,5。,,,,。,5%,。R:R=aNnd:d;N;n;a,,a=20。,6,7。35,2008,4-,4.5m,17.9m。,,,。,,,。3.1,2,1~2s15.2,fptk=1860N/mm2,0.5fptk,520kN。8。,,,,,,,。9。·50·20121,:,,,1~2s15.2,,。6,7。(10)。3.2、,、,,,。3.2.12800mm×2800mm,120mm,8@130。,,50mm×400mm。,,,,。3.2.2,210mm,,,,,,。3.2.3,,。,,,,,,,,,,。3.2.4,。30mm,,。。4,。,,,,,。、、,,,,,。,,。,,。,·51·431,,,,,,。1112。,,、。,,,。13(Christchurch)。2011222,。5,、,,:(1),,;(2)。,,。[1],,.[M].,2008.[2],[M].,2005.[3],,.[J].,1999,30(12):855-857.[4],,:[C].,2000.[5],,:[C].,2002.[6],,,.:[C].,2007.[7],,[J].,1999.[8]VSLInternationalLtd.VSLreportseries,Post-tensionedMasonryStructures[J].Feb.2011.[9]FacultyofEngineering,theUniversityofAuckland,Assessmentandimprovementofunreinforcedmasonrybuildingsforearth-quakeresistance[J].March,2011.[10]S.Chuang,Y.Zhuge,P.C.Mcbean,Seismicretrofittingofun-reinforcedmasonrywallsbycablesystem,13thWorldConfer-enceonEarthquakeEngineering[C].Vancouver,B.C.,Canada,August,2004.[11]M.Elgawady,P.Lestuzzi,M.Badoux.AreviewofconventionalseismicretrofittingtechniquesforURM,13thInternationalBrickandBlockMasonryConference[C].Amsterdam,July,2004.[12]NebojsaMojsilovic,PeterMarti,Loadtestsonpost-tensionedmasonrywalls[J].TMSJournal,2000(7):65-70.·52·