體外預(yù)應(yīng)力法加固鋼砼梁的抗彎性能研究及其與粘鋼法加固的對比試驗研究.pdf

1、北京工業(yè)大學(xué)碩士學(xué)位論文體外預(yù)應(yīng)力法加固鋼砼梁的抗彎性能研究及其與粘鋼法加固的對比試驗研究姓名：李立申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：涂鳴2003.6.1北京工業(yè)大學(xué)碩士學(xué)位論文AbstractInthisp叩ertheauthorstudythemechanicsperformanceof’reinforcedconcretebeamstren昏henedbyext咖alprestressingandthecontrastag

2、ainstitbybondingsteelplatebythemeansoftheoreticsandexperimemThmu曲thisstudytheauthoreducesmanyvaluableconclusionsandputfo九vardsomeadvicesforthedesignofbeamstrengthenedbyemernalprestressingFirst，theauthorcaⅡiedoutstaticexp

3、erimentonthe1：1modelofnxedsupportbeamstrengthedbyextemaIprestressingandbybondingsteelplateInthisexperjment，thereare6丘xedsupportbeamsThreeofthemarestrengthenedbyeXternalprestressiIl島twoofthemarestren群henedbybondingsteelpl

4、ate，andtheotheroneisremforcedconcretebeamascontrastexperimentbeamIntheeXperimem，theauthorgetmanyconclusionsonthefixedbeamstren群hendbythetwomeansthroughanalysmgtheexperirnemresult，includingstrain，displacement，angleofrotat

5、ionandd鋤agecharacterSecondly，tlleauthorcomparesthetwostrengtlleningmeansintwoaspectsTheyaremechanicalpropertyandtheconVeniemofconstnlctionItcanbeusedfo。ref打enceinselectingstrengthenjngscheme0nceagain，contr叩osingthespecmc

6、caseinenginee血gstrengtIleningandt11eshortcominginthestr∞鮮henmgconcretenorm，theauthorputsforwardmodmedmeansthatdesignershouldexamiIletheimemalforceaneresmatir培theprestressedtensionrOdsec七ionalareaanddeducethepracticalfor舢

7、IausedintheeXaminm呂TheforⅡmlaissuitabIeformostengineeringcastwhichcoIlsistoftllreedisposalstylesoftensionrod—leveltensionrod，onebreakpointstrutf鋤edt衄sionrod，t、vobreakpointsstnlt丘amedtesionrod，蛐dconsiderthebounda廣yconditi

8、on’se髓ct0nthestrength刪ngItsapp越cationalsojsconVenjenceFinally，bytheexperimemaldataandthepmgr鋤mingcalculation，t11eauthorstudvtheeccentriccompressionandtensionstateonthecon仃olsectionoftlletvrostyleofstren酵henedbeamBasingon