FRP预应力混凝土受弯构件的延性分析

Because of its high strength, light weight, resistance to erosion, low modulus of elasticity and low shrinkage factor, FRP tendons are very suitable for using as prestressed tendons. However, opposed to ordinary steel, FRP tendons have no obviously yield point or yield plateau, and the stress - strain curve is linear changes. This paper makes a thorough and systematic theoretical analysis of FRP tendons prestressed concrete flexural members’ ductility for this special character of FRP tendons, then analysis on ductility of the structure and components should be depend on different situations: seismic region or no seismic region. and analysis is made on the existing definition of ductility index of FRP prestressed components.