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ID:46586593
大小:1.83 MB
页数:54页
时间:2019-11-25
《碳纤维加固钢筋混凝土梁抗弯性能的试验研究》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、东北林业大学硕士学位论文碳纤维加固钢筋混凝土梁抗弯性能的试验研究姓名:王润建申请学位级别:硕士专业:道路与铁道工程指导教师:于天来20040301摘要碳纤维增强翅料(CarbonFiberReinforcedPlastic;简称cFRP)加固混凝土结构,是近年来逡现豹一秘灏豹加固方法,凄予其具有缀蔫兹强度、瓣瘸镀、藏王蠖捷、咒乎不改变结梅原有尺寸等特点,得弱广泛的应用,具裔良好的经济效箍。在前人研究成果的基础一上二,本文对碳纤维布加固钢筋混凝士粱的锚固性能谶行了研究,熏点考虑了U形麓豹位景、数量、幅宽及阍距等
2、因素对纵超纤维锚翻性毙鹩影昀,提出了麓荦蠢效的鼹麓锵豳措施。对碳纤维加固钢筋混凝土梁的抗弯性能进行了试骏,考察了混凝土强度、配筋率、纤维糍贴量等因素对极限承载力的影响,同时对碳纤维加嗣后梁的裂缝、变形进行了分奇厅;验证了凝纾维翔蠢镪簦演凝±褐《牛币截瑟受毒承载力诗葵鬓论,修正了凝纾维受弯诗繁辑减系数,掇出了能用于实际工程设计的承载力计算方法。此外,本文还利用ANSYS软件对碳纤维加固钢筋混凝土梁抗弯试验从加载剿最后破坏遴嚣了全遵翟辏囊分聿厅,并联缮了较为嚣惑瓣结象。关键词:锚固;抗弯加围;极限承裁力:挠度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碳纤维加蚓钢筋混凝士梁抗弯性能的试验研究I绪论1.1引言钢筋混凝土梁是建筑工程中广泛应用的主要构件之一,由于材质的不断劣化、结构
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