【《TRC加固混凝土的国内外研究现状文献综述》3700字】

TRC加固混凝土的国内外研究现状文献综述TRC与混凝土间的界面性能通过大量试验研究发现，TRC与混凝土间的界面粘结性能对能否充分发挥TRC板在加固中的性能起着至关重要的作用，因此，越来越多的学者开始将研究重心转至两者之间的粘结性能。大多数学者对于界面粘结性能的研究，采用的试验方法主要分为单剪试验和双剪试验，同时又分为拉剪和压剪，单剪试验的拉剪是先利用钢架将混凝土构件固定，再利用试验机夹具夹住TRC板延伸出的纤维织物，对其施加拉力进行试验；单剪试验的压剪是先利用钢架以及钢侧板等将板材固定，再利用试验机直接在混凝土构件上施加压力，如REF_Ref35437773\h图1.1所示。双剪试验的拉剪是将两块TRC板粘贴到两块基体的两侧，通过拉动基体，将力施加到TRC板上；双剪试验的压剪则是通过试验机将力直接施加到混凝土上，如REF_Ref35437780\h图1.2所示。图1.1单剪试验图1.2双剪试验Ombres[[]OmbresL.AnalysisofthebondbetweenFabricReinforcedCementitiousMortar(FRCM)strengtheningsystemsandconcrete.CompositesPartB:Engineering,2015,69:418–426]等采用单剪试验[]OmbresL.AnalysisofthebondbetweenFabricReinforcedCementitiousMortar(FRCM)strengtheningsystemsandconcrete.CompositesPartB:Engineering,2015,69:418–426T.D’Antino[[]D’antinoT,SneedLH,CarloniC,etal.Effectoftheinherenteccentricityinsingle-lapdirect-sheartestsofPBOFRCM-concretejoints.CompositeStructures,2016,142:117–129]等利用单剪试验研究了偏心率对FRCM与混凝土间粘结性能的影响，将具有相同粘结长度的FRCM应用于不同长度的混凝土，结果发现对于比有效粘结长度更长的粘结长度，偏心效应可以忽略不计。[]D’antinoT,SneedLH,CarloniC,etal.Effectoftheinherenteccentricityinsingle-lapdirect-sheartestsofPBOFRCM-concretejoints.CompositeStructures,2016,142:117–129D’Antino[[]D’antinoT,SneedLH,CarloniC,etal.InfluenceofthesubstratecharacteristicsonthebondbehaviorofPBOFRCM-concretejoints.ConstructionandBuildingMaterials,2015,101:838–850][]D’antinoT,SneedLH,CarloniC,etal.InfluenceofthesubstratecharacteristicsonthebondbehaviorofPBOFRCM-concretejoints.ConstructionandBuildingMaterials,2015,101:838–850O.Awani[[]AwaniO,RefaiAE,El-MaaddawyT.Bondcharacteristicsofcarbonfabric-reinforcedcementitiousmatrixindoublesheartests[]AwaniO,RefaiAE,El-MaaddawyT.Bondcharacteristicsofcarbonfabric-reinforcedcementitiousmatrixindoublesheartests.ConstructionandBuildingMaterials,2015,101:39–49L.H.Sneed[[]SneedLH,D'antinoT,CarloniC,etal.AcomparisonofthebondbehaviorofPBO-FRCMcompositesdeterminedbydouble-lapandsingle-lapsheartests.CementandConcreteComposites,2015,64:37–48]等采用双剪试验，研究了PBO-TRM的粘结长度和粘结宽度对界面粘结性能的影响，同时对应力传递过程进行了机理分析。OrtleppR等[[]HeggerJ,WillN,BruckermannO,VossS.Load-bearingbehaviorandsimulationoftextile-reinforcedconcrete.MaterialsandStructures,2006,39(8):765–776.]首次提出将加固层与混凝土粘结区域分为开裂段以及未开裂段，以此来预估粘结强度，但这种只考虑到了纯剪切状态，未考虑加固层的剥离。Brückner等[[[]SneedLH,D'antinoT,CarloniC,etal.AcomparisonofthebondbehaviorofPBO-FRCMcompositesdeterminedbydouble-lapandsingle-lapsheartests.CementandConcreteComposites,2015,64:37–48[]HeggerJ,WillN,BruckermannO,VossS.Load-bearingbehaviorandsimulationoftextile-reinforcedconcrete.MaterialsandStructures,2006,39(8):765–776.[]A.Brückner,R.Ortlepp,M.Curbach.Textilereinforcedconcreteforstrengtheninginbendingandshear.MaterialsandStructures,2006,39(8):741–748.卜良桃等[][]卜良桃,罗兴华,高伟.销钉用于HPF加固混凝土构件的界面黏结性能.河海大学学报(自然科学版),2008,36(3):367-370.支正东等[][]支正东，陈贺，荀勇等.织物增强磷酸镁水泥基混凝土薄板与老混凝土界面粘结性能试验研究.建筑结构,2017,47(15):70-75杜玉兵等[][]杜玉兵,曹德万,荀勇,等.磷酸钾镁水泥砂浆与混凝土粘结抗剪性能试验研究[J].建筑结构,2017,047(004):35-38.TRC的抗弯加固Bruckner[[]BrücknerA,OrtleppR,CurbachM.Textilereinforcedconcreteforstrengtheninginbendingandshear.MaterialsandStructures,2006,39(8):741–748][]BrücknerA,OrtleppR,CurbachM.Textilereinforcedconcreteforstrengtheninginbendingandshear.MaterialsandStructures,2006,39(8):741–748D’Ambrisi和Focacci[[]D’ambrisiA,FocacciF.FlexuralStrengtheningofRCBeamswithCement-BasedComposites,2011,15(5):707–720][]D’ambrisiA,FocacciF.FlexuralStrengtheningofRCBeamswithCement-BasedComposites,2011,15(5):707–720Ombres[[]OmbresL.Flexuralanalysisofreinforcedconcretebeamsstrengthenedwithacementbasedhighstrengthcompositematerial.CompositeStructures,2011,94(1):143–155][]OmbresL.Flexuralanalysisofreinforcedconcretebeamsstrengthenedwithacementbasedhighstrengthcompositematerial.CompositeStructures,2011,94(1):143–155Verbruggen[[]VerbruggenS,TysmansT,WastielsJJM,etal.BendingcrackbehaviourofplainconcretebeamsexternallyreinforcedwithTRC[]VerbruggenS,TysmansT,WastielsJJM,etal.BendingcrackbehaviourofplainconcretebeamsexternallyreinforcedwithTRC.MaterialsandStructures,2016,49(12):5303–5314WeilandS等[[]WeilandS,OrtleppR,CurbachM(2006).StrengtheningofPre-DeformedSlabswithTextileReinforcedConcrete[A].In:CEB-FIP(ed)Proceedingsofthe2ndfib-Congress,University[]WeilandS,OrtleppR,CurbachM(2006).StrengtheningofPre-DeformedSlabswithTextileReinforcedConcrete[A].In:CEB-FIP(ed)Proceedingsofthe2ndfib-Congress,UniversitydiNapoliFedericoII,Naples,2006:14-22C.G.Papanicolaou等[[]C.G.Papanicolaou,T.C.Triantafillou,etal.TRMasStrengtheningandSeismicRetrofittingMaterialofConcrete[]C.G.Papanicolaou,T.C.Triantafillou,etal.TRMasStrengtheningandSeismicRetrofittingMaterialofConcreteStructures.In:1stInternationalConferenceTextileReinforcedConcrete(ICTRC).Germany:RWTHAachenUniversity:331-340在TRC抗弯加固混凝土构件的试验过程中，试件一般采用四点弯曲试验，这样可以有效保证试件有一纯弯段，在跨中发生弯曲破坏，其中研究最多的变化参数就是织物层数和锚固类型[15]。并且，总结TRC抗弯加固混凝土构件试验所得的荷载-位移曲线发现，曲线可以基本概括为三个阶段[[]KoutasLN,TettaZ,BournasDA,etal.StrengtheningofConcreteStructureswithTextileReinforcedMortars:State-of-the-ArtReview.CompositeStructures,2019,23(1):318–328]，即未开裂阶段，裂缝开展阶段，钢筋屈服阶段。简化的荷载-位移曲线如图1.3所示。[]KoutasLN,TettaZ,BournasDA,etal.StrengtheningofConcreteStructureswithTextileReinforcedMortars:State-of-the-ArtReview.CompositeStructures,2019,23(1):318–328图1.3TRC抗弯加固简化荷载-挠度曲线TRC的抗剪加固Al-Salloum等[[] [] Al-SalloumYA,ElsanadedyHM,AlsayedSH,etal.Experimentalandnumericalstudyfortheshearstrengtheningofreinforcedconcretebeamsusingtextile-reinforcedmortar.JournalofCompositesforConstruction,2011,16(1):74-90Tetta等[[]TettaZC,KoutasLN,BournasDA.Textile-reinforcedmortar(TRM)versusfiber-reinforcedpolymers(FRP)inshearstrengtheningofconcretebeams[]TettaZC,KoutasLN,BournasDA.Textile-reinforcedmortar(TRM)versusfiber-reinforcedpolymers(FRP)inshearstrengtheningofconcretebeams.CompositesPartB:Engineering,2015,77:338-348荀勇等[[] [] 荀勇,尹红宇,肖保辉.织物增强混凝土加固RC梁的斜截面抗剪承载力试验研究.土木工程学报,2012,45(5):58-64Azam等[[] [] AzamR,SoudkiK.FRCMstrengtheningofshear-criticalRCbeams.JournalofCompositesforConstruction,2014,18(5):04014012A.Brueckner等[[]BruecknerA,OrtleppR,CurbachM.AnchoringofshearstrengtheningforT-beamsmadeoftextilereinforcedconcrete(TRC)[J].Materials&Structures,2008,41(2):407-418.][]BruecknerA,OrtleppR,CurbachM.AnchoringofshearstrengtheningforT-beamsmadeoftextilereinforcedconcrete(TRC)[J].Materials&Structures,2008,41(2):407-418.通过以上文献发现，TRC抗剪加固RC梁的粘贴位置位于试件的主要剪跨段，加固方式主要有侧面粘贴、U形缠绕以及完全包裹。其中，侧面粘贴、U形缠绕的加固方式较为常见，而完全包裹的方式比较少，一般仅应用于混凝土柱的抗剪加固中。且主要研究变量为加固材料、织物层数、砂浆种类等，LoretoG[[]LoretoG,BabaeidarabadS,LeardiniL,etal.RCbeamsshear-strengthenedwithfabric-reinforced-cementitious-matrix(FRCM)composite.InternationalJournalofAdvancedStructural