The Research On Component Of Firber Reinforced Polymer Combined Magnesite Concret About Performance Of Pure Bending

The component of FRP(Fiber Reinforced Polymer) combined magnesite concrete which composited by FRP,magnesite concrete and bamboo bar is a new-style complex component.Comparing with reinforced concrete menbers or steel members,it has good corrosive-resistant property,lightweight and good electromagnetic interference-resista -nt property. At present,many mechanics performances of the component of FRP combined magnesite concrete are remains uncertain and the instruction of design is rare.In this thesis, the fundamental research present situation about FRP-confined concrete in home and abroad is summarized and analyzed.And, the research progresses and application about fiber reinforced polymer, magnesite concrete and bamboo bar in civil engineering field is also introduced;The mechanical and physical property about materials of the component of FRP combined magnesite concrete are summarized on the base of material performance;Theoretical derivation about the ultimate flexural bearing capacity of the component of FRP combined magnesite concrete is done.Then,method and formulas for calculating the flexural strength of the component of FRP combined magnesite concrete are developed;Base on the numerical method of finite element and testing,the research about the loading progress of beams of FRP combined magnesite concrete is done,the results show:1) The analytical resultes about ultimate flexural bearing capacity agree well with those of theoretical derivation;2) It is just good for ultimate flexural bearing capacity to enlarging area of section of FRP;3) It is effective on improve ultimate flexural bearing capacity or ductility of beams to increase ratio of reinforcement of bamboo bar.