Modelling of High Strength Concrete Reinforced Columns Wrapped with FRP
The use of high strength concrete (HSC) in civil projects has been more popular in the recent years. The use of high strength concrete may be cheaper in cost and more convenience than normal strength concrete (HSC). However, several studies have reported that high strength concrete is less ductile compared to normal strength concrete. Based on drawbacks of the behaviour of HSC, several studies indicated that confinement of high strength concrete can reduce this brittle behaviour. Confinement can be achieved by using helical reinforcement especially in the compression area. Previous studies have shown that the pitch of helical reinforcement affects the strength and ductility of HSC. This paper investigates the behaviour of high strength concrete columns wrapped with FRP by using the finite element method (FEM). The finite element analysis has been used to check the results based on previous experimental tests. The finite element software (Strand7) has been used to model high strength concrete columns with different FRP wrapping and under different loading conditions. The finite element results show a good response to deflections and loads, similar to experimental results. In addition, it is believed that the finite element results in this paper can be used to improve future research in finite element modelling in high strength concrete with FRP.