- 丁 斌1,欧阳利军2,张春雄2
2020年第7期
摘要
引用本文
摘 要:为了探究高温损伤对纤维增强复合材料(FRP)约束混凝土轴压应力-应变模型的影响规律,本文基于多个现有FRP约束常温未损伤混凝土轴压应力-应变设计型模型和已有试验数据,建立了FRP约束高温损伤混凝土应力-应变设计型模型。结果表明,基于TENG提出的模型,经修正比例系数和常温未约束混凝土的抗压强度而建立的设计型模型预测精度较好。Abstract:Inordertoexploretheeffectofelevatedtemperaturedamageontheaxialcompressionconstitutivemodeloffiberreinforcedpolymer(FRP)confinedconcrete,thedesign-orientedmodelwithhighprecisionisdeterminedbasedonanalyzingtheexistingexperimentaldata.Finally,adesign-orientedstress-strainmodelofFRP-confinedheat-damagedconcreteunderaxialcompressionisestablished.TheresultsshowthatbasedonthemodelproposedbyTENG,thepredictionaccuracyofthedesign-orientedmodelwhichisestablishedbymodifyingproportionalcoefficientandthecompressivestrengthofunconstrainedconcreteatroomtemperatureisgood.
丁斌,欧阳利军,张春雄,等. FRP约束高温损伤混凝土轴压应力-应变设计型模型[J].混凝土与水泥制品,2020(7):55-58+63.
DING Bin,OUYANG Li-jun,ZHANG Chun-xiong,et al.Design-oriented Stress-strain Model for Heat-damaged Concrete Confined with Fiber Reinforced Polymers[J].China Concrete and Cement Products,2020(7):55-58+63.