FEA on seismic performance of steel reinforced recycled concrete frame infilled with recycled concrete blocks

Finite element software ABAQUS was used to analyze the nonlinear performances of steel reinforced recycled concrete frame infilled with recycled concrete blocks. The simulation results agreed with the experimental results and the rationality of the finite element model was proved. Parametric analysis of the structure was carried out, in which the recycled concrete strength, yield strength of steel in frame columns, axial compression ratio, masonry strength and aspect ratios of the infilled wall were considered as analytical parameters. The results indicate that the horizontal load-bearing capacity of the structure is improved with the increment of recycled concrete strength and yield strength of steel in frame columns, but there is no significant effect on the elastic stiffness and the ductility. With the increment of the axial compression ratio, the load-bearing capacity increases before decreasing, the elastic stiffness changes a little and the ductility decreases. With the increment of the masonry strength and aspect ratio of the infilling wall, the ductility decreases while the horizontal load-bearing capacity and the elastic stiffness increase obviously. ©, 2015, Science Press. All right reserved.