纖維增強復合材料（Fiber Reinforced Polymer,FRP）具有抗拉強度高、強重比高、耐腐蝕性好等優(yōu)異性能。使用FRP筋替代混凝土結構中的鋼筋,可以解決鋼筋混凝土結構的腐蝕問題。但由于FRP筋是一種線彈性材料,僅配置FRP筋作為縱筋的混凝土梁破壞形式為脆性破壞。同時由于FRP筋彈性模量較低、粘結性能較弱,結構易于產生較大的變形與裂縫。因此,研究人員提出在混凝土梁中同時配置線彈性的FRP筋與彈塑性的鋼筋以提升混凝土梁的受彎性能。目前的FRP筋相關研究多集中于CFRP與GFRP,而對AFRP的相關研究還比較少。AFRP的彈性模量高,耐磨性好,適合作為混凝土結構的筋材。本文通過建立有限元模型,研究了同時配置AFRP筋與鋼筋作為受拉筋的混凝土梁的受彎性能,并分析了其破壞模式與承載能力。本文的研究內容如下:（1）基于現(xiàn)有試驗研究的幾何屬性與材料性能,建立了混合配筋混凝土梁的有限元模型。數(shù)值模擬的結果表明,本文所建立的模型準確性較高,可以預測混合配筋混凝土梁的受彎承載力,可以近似反映其荷載-跨中位移關系（2）基于有限元模型,分析了混凝土抗壓強度、縱筋種類、縱筋直徑與混合配筋率對混合... 

【文章頁數(shù)】：79 頁

【學位級別】：碩士

【文章目錄】：
摘要
Abstract
Notations
Chapter 1 Introduction
    1.1 Background
    1.2 Fiber Reinforced Polymer
        1.2.1 FRP constituents:Resin
        1.2.2 FRP constituents:Fillers and additives
        1.2.3 Various types of FRP:Carbon Fiber Reinforced Polymer(CFRP)
        1.2.4 Glass Fiber Reinforced Polymer(GFRP)
        1.2.5 Basalt Fiber Reinforced Polymer(BFRP)
        1.2.6 Aramid Fiber Reinforced Polymers(AFRP)
        1.2.7 Hybrid FRP systems
        1.2.8 Advantages and Applications of FRP bars
        1.2.9 Limitations of FRP bars
    1.3 Literature review
    1.4 Aim and Objectives
    1.5 Structure of the Thesis
Chapter 2 Model definition& properties of the materials
    2.1 Outline of the simulated experimental program
    2.2 Finite element model definition
    2.3 Mechanical properties of materials
        2.3.1 Concrete
        2.3.2 Steel reinforcement and steel plates
        2.3.3 Aramid Fiber Reinforced Polymer
    2.4 Evaluating terms of Hybrid FRP systems
        2.4.1 Deflection at mid-span
        2.4.2 First cracking moment
        2.4.3 Flexural Strength
        2.4.4 Crack Width
        2.4.5 Deformability
    2.5 Summary
Chapter 3Finite Element Modeling
    3.1 Introduction
    3.2 DIANA FEA BV
    3.3 Beam shape and materials assignment
    3.4 Elements type
        3.4.1 Solid Element for modeling Concrete and Steel plates
        3.4.2 Truss Element for Steel and FRP reinforcements
    3.5 Material modeling
        3.5.1 Concrete
        3.5.2 Steel,FRP reinforcements& Steel plates
    3.6 Meshing
    3.7 Boundary Conditions,Loading and support plates
    3.8 Solution Algorithm
    3.9 Summary
Chapter 4Results and Discussions of the FEM
    4.1 Analysis of FEM Results
    4.2 Parametric study
        4.2.1 Effect of Compressive strength
        4.2.2 Effect of Reinforcement type
        4.2.3 Effect of Reinforcement size
        4.2.4 Effect of reinforcement ratio
    4.3 Analysis of failure modes
    4.4 Summary
結論
Conclusions(In English)
References
Acknowledgment
Resume


【參考文獻】：
期刊論文
[1]混凝土橋梁的耐久性維護方法[J]. 屈文俊,張譽.  鐵道學報. 2001(01)



本文編號：3662488