FRP筋混凝土界面疲勞性能的有限元分析

FRP筋混凝土界面疲勞性能的有限元分析摘要：本文通過(guò)有限元方法分析了FRP筋混凝土界面的疲勞性能，定義了一種適用于這一類結(jié)構(gòu)的疲勞損傷模型和疲勞損傷評(píng)估流程。結(jié)果表明，F(xiàn)RP筋混凝土界面的疲勞性能隨著荷載循環(huán)次數(shù)的增加而逐漸下降。本文的研究結(jié)果對(duì)于FRP筋混凝土結(jié)構(gòu)的實(shí)際應(yīng)用具有重要意義。關(guān)鍵詞：FRP筋混凝土；界面；疲勞；有限元模擬；損傷評(píng)估第一章緒論1.1研究背景1.2研究目的1.3研究?jī)?nèi)容1.4研究方法第二章相關(guān)理論和研究進(jìn)展2.1FRP筋混凝土2.2界面性能2.3疲勞性能2.4有限元模擬2.5損傷評(píng)估第三章模型建立3.1材料參數(shù)3.2結(jié)構(gòu)模型3.3負(fù)荷條件第四章疲勞損傷模型4.1傳統(tǒng)的S-N曲線模型4.2基于彈簧單元的模型4.3基于斷裂力學(xué)的模型第五章疲勞損傷評(píng)估流程5.1損傷積累5.2損傷評(píng)估5.3應(yīng)用案例第六章結(jié)論和展望6.1研究結(jié)論6.2展望未來(lái)參考文獻(xiàn)Abstract:ThispaperanalyzesthefatigueperformanceofFRPreinforcedconcreteinterfacebyfiniteelementmethod,anddefinesafatiguedamagemodelandfatiguedamageevaluationprocesssuitableforthistypeofstructure.TheresultsshowthatthefatigueperformanceofFRPreinforcedconcreteinterfacegraduallydecreaseswiththeincreaseofloadcyclingtimes.TheresearchresultsofthispaperhaveimportantpracticalsignificancefortheapplicationofFRPreinforcedconcretestructures.Keywords:FRPreinforcedconcrete;interface;fatigue;finiteelementsimulation;damageassessmentChapter1Introduction1.1ResearchBackground1.2ResearchObjectives1.3ResearchContents1.4ResearchMethodsChapter2RelatedTheoriesandResearchProgress2.1FRPReinforcedConcrete2.2InterfacePerformance2.3FatiguePerformance2.4FiniteElementSimulation2.5DamageEvaluationChapter3ModelEstablishment3.1MaterialParameters3.2StructureModel3.3LoadConditionsChapter4FatigueDamageModel4.1TraditionalS-NCurveModel4.2ModelBasedonSpringElement4.3ModelBasedonFractureMechanicsChapter5FatigueDamageEvaluationProcess5.1DamageAccumulation5.2DamageEvaluation5.3ApplicationCa