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1、東北林業(yè)大學(xué)碩士學(xué)位論文碳纖維加固鋼筋混凝土梁抗彎性能的試驗研究姓名:王潤建申請學(xué)位級別:碩士專業(yè):道路與鐵道工程指導(dǎo)教師:于天來20040301摘要碳纖維增強翅料(CarbonFiberReinforcedPlastic;簡稱cFRP)加固混凝土結(jié)構(gòu),是近年來逡現(xiàn)豹一秘灝豹加固方法,凄予其具有綴蔫茲強度、瓣瘸鍍、藏王蠖捷、咒乎不改變結(jié)梅原有尺寸等特點,得弱廣泛的應(yīng)用,具裔良好的經(jīng)濟效箍。在前人研究成果的基礎(chǔ)一上二,本文對碳纖維布加固鋼筋混凝士粱的錨固性能讖行了研究,熏點考慮了U形麓豹位景、數(shù)量、幅寬及閽距等
2、因素對縱超纖維錨翻性斃鷯影昀,提出了麓犖蠢效的鼴麓鏘豳措施。對碳纖維加固鋼筋混凝土梁的抗彎性能進行了試駿,考察了混凝土強度、配筋率、纖維糍貼量等因素對極限承載力的影響,同時對碳纖維加嗣后梁的裂縫、變形進行了分奇廳;驗證了凝紓維翔蠢鏹簦演凝±褐《牛幣截瑟受毒承載力詩葵鬢論,修正了凝紓維受彎詩繁輯減系數(shù),掇出了能用于實際工程設(shè)計的承載力計算方法。此外,本文還利用ANSYS軟件對碳纖維加固鋼筋混凝土梁抗彎試驗從加載剿最后破壞遴囂了全遵翟輳囊分聿廳,并聯(lián)繕了較為囂惑瓣結(jié)象。關(guān)鍵詞:錨固;抗彎加圍;極限承裁力:撓度AB
3、S’I’RAC’rStren.gtheningconcretestructurewithCarbonFiberReinforcedPlastic(CFRP)isanewstructuralrepairmethodinrecentyears.Becauseofitshighstrength,resistancetoelectrochemicalerosion,lowmanpowerdemandforapplicationandminimalchangesingeometricaldimensionsofthem
4、ember.themethodhasbeenfoundtobeeconomicalandefficientforapplication.Basedonthepreviouswork,westudiedtheanchoringcapacityofreinforcedconcrete(RC)beamsstrengthenedwiththeCarbonFiberReinforcedPlastic,emphasizedontheeffectsofposition,quantityandspaceetcofU—hoop
5、ofCFRPontheanchoragepropertyoflongitudinalCFRP,andgavesimpleefficiencyanchoragemeasuretoavoidthesuddendebondingfailure.Inthispaper,thebendingcapacityofreinforcedconcrete(RC)beamsstrengthenedwiththeCarbonFiberReinforcedPlastic,weretested.Theinfluencefactorso
6、fconcretestrength,reinforcementratioandthenumberofCFRPetc.Additionally,thestiffnessandcrackperformaliceoftheabovetestedareanalyzed.Normalsectionflexuralload—bearingcapacityofreinforcedconcrete(RC)beamsstrengthened、vimtheCarbonFiberReinforcedPlasticisvalidat
7、ed,andcorrectedthediscountquotationofbendingcapacityofCFRP.Finally,thecalculatemethodofload-bearingcapacitycanbeappliedinrealengineeringisintroduced.Inthispaper,theexperimentofreinforcedconcrete(RC)beamsstrengthenedwiththeCarbonFiberReinforcedPlasticismodel
8、edwiththesoftwareofANSYS,andtheoutcomecorrelateswellwithexperimentdata.Keywordsanchorage;flexuralstrengthening:bearingcapacity:deflection碳纖維加蚓鋼筋混凝士梁抗彎性能的試驗研究I緒論1.1引言鋼筋混凝土梁是建筑工程中廣泛應(yīng)用的主要構(gòu)件之一,由于材質(zhì)的不斷劣化、結(jié)構(gòu)