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Analysis about Hybrid Effects of HFRP Bars and Research on Ductility of Concrete Beams Reinforced with HFRP Bars

Author: CaoKai
Tutor: XuXinSheng
School: Jinan University
Course: Structural Engineering
Keywords: HFRP Hybrid ratio Bending properties Finite Element Simulation Ductility
CLC: TU375.1
Type: Master's thesis
Year: 2011
Downloads: 48
Quote: 1
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Abstract


HFRP (Hybrid Fiber Reinforced Plastics) tendons match by two or more continuous reinforcing fibers through the coordination of each other, resulting in collaborative hybrid effect made of a new composite material tendons. It not only has a single fiber reinforced plastic tendons high specific strength, fatigue resistance, corrosion resistance, resistance to electromagnetic and strong design and other unique advantages, but also has a single FRP bars ductility performance can not be compared, another but also reduce costs, known as the 21st century the dominant direction of the fiber-reinforced material. HFRP tendons with similar reinforcement \in-depth study. HFRP tendon mechanical properties and the the HFRP reinforced concrete beam flexural performance of experimental studies based on nonlinear analysis through the whole process of the concrete beam flexural test to verify the the HFRP reinforced concrete beam deflection prediction model, and the use of sectional curvature coefficient and the cross-sectional displacement coefficient two indicators to characterize the ductility of of HFRP reinforced concrete beam. The main contents and results: tendons on mechanical properties of 1.HFRP different mixed ratio of carbon / glass HFRP tendon elastic modulus, tensile strength and elongation and other mechanical testing methods were studied, and the tensile test The results were statistically analyzed to draw different mixed ratio HFRP tendons stress - strain curves. According to the the promiscuous law proposed for HFRP tendons concrete structure design the mechanical properties. 2.HFRP reinforced concrete beam under bending behavior of finite element simulation using ANSYS finite element software on three hybrid ratio of carbon / glass HFRP reinforced concrete beam flexural performance test the whole process of nonlinear analysis modeling method, the unit selected The material constitutive simulation process described in detail. ANSYS finite element calculation of the results of research and analysis through the ANSYS finite element analysis to verify the reliability of the ANSYS finite element model, and the mode of the hybrid ratio, concrete strength and reinforcement ratio HFRP reinforced concrete beam deflection. And verify the correctness of the forecast HFRP tendons concrete beam effective moment of inertia calculation method. HFRP tendons concrete beams ductility of the use of cross-sectional curvature coefficient and displacement ductility coefficient both indicators to characterize the ductility performance of the the HFRP reinforced concrete beam, and qualitative research by calculating the carbon / glass hybrid ratio, the ratio of reinforcement and concrete strength of hybrid fiber reinforced concrete beam ductility factors.

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures > Girder
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