Chapter 1 Introduction
1.1 Background
1.1.1 Strength and characteristics of deep beams
1.1.2 Field problems of reinforced concrete deep beams
1.2 FRP Constituents: Fibers
1.2.1 FRP Constituents: Resin
1.2.2 FRP Constituents: Fillers and Additives
1.2.3 Characteristics of FRP bars
1.2.4 Advantages and Applications of FRP bars
1.2.5 Limitations of FRP bars
1.3 Literature review
1.4 Objective of the Thesis
1.5 Structure of the Thesis
Chapter 2 Non-linear Finite Element Modeling
2.1 Introduction
2.1.1 Beam Parts and Section Assignments
2.2 Constitutive Models
2.3 Concrete Model
2.3.1 Uniaxial Compressive Behavior
2.3.2 Uniaxial Tensile Behavior
2.3.3 Compression and Tension damage parameters
2.3.4 Concrete Poisson’s Ratio
2.4 FRP reinforcement
2.5 U-shaped steel stirrups
2.6 Elements
2.6.1 Solid Element for modeling Concrete and bearing plates
2.6.2 Truss Element for modeling FRP bars
2.7 Meshing
2.8 Assembly, Boundary Conditions and Loading
2.9 Time Step Incrementation
2.9.1 Mass Scaling in ABAQUS explicit
2.9.2 Smooth amplitude curves
2.10 Interaction
2.10.1 Interaction between FRP bars and Surrounding Concrete
2.10.2 Interaction between Concrete and Bearing plates
2.11 Summary of the proposed FEM
Chapter 3 Results and Discussion of the FEM
3.1 Validation of the FEM
3.1.1 Description of the test
3.2 Comparison of Crack Pattern and Mode of Failure
3.3 Comparison of load-midspan deflection response curves
3.4 Parametric study
3.4.1 Effect of FRP longitudinal reinforcement ratio (ρ) on the beam capacity
3.4.2 Effect of concrete compressive strength fc on the beam capacity
3.4.3 Effect of shear span-to-depth ratio (a/d) on the beam capacity
3.4.4 Effect of loading-plate size (lt) on the beam capacity
3.5 Modified Shear strength equation
3.6 Chapter Summary
Chapter 4 Shear strength of FRP-RC deep beams
4.1 Introduction
4.2 Shear mechanism
4.2.1 Failure mechanism of FRP-RC deep beams
4.3 Strut and Tie Method (STM)
4.3.1 Modeling of FRP-RC deep beams using Strut and Tie Method (STM)
4.3.2 Components of Strut and Tie Model
4.3.3 Calculation procedure
4.4 Jang et al. equations
4.5 K. Mohamed et al. equation
4.6 Comparative Analysis
4.7 Chapter Summary
Conclusion and Recommendations
参考文献
Appendix
声明
致谢
哈尔滨工业大学;
