Finite element analysis of the seismic performance of transfer beam structures with hybrid reinforcement of steel-FRP bars
This paper presents a study in which four specimens of transfer beam structures,each reinforced using different methods,were tested under pseudo-static loading.The analysis focused on the hysteretic curves,skeleton curves,and stiffness degradation curves of these specimens.A numerical analysis model for the transfer beam structure was established using the macro beam column fiber element based on the stiffness method in OpenSees,considering a suitable material constitutive model and the bond-slip of reinforced materials.The results from the numerical sim-ulations were compared with experimental data to validate model accuracy.Results show that the specimens with hybrid reinforcement demonstrated good seismic performance.The numerical model accurately simulated the pinching effect observed in the hysteresis curves and provided high accuracy in the load values at characteristic states.Further analysis showed that increasing the concrete strength or the longitudinal reinforcement ratio of the column improved the seismic per-formance of specimen ZHL-4.Conversely,increasing the axial compressive ratio of the wall is harmful to the seismic performance of specimen ZHL-4.
transfer beamhybrid reinforcementseismic performancefinite element analysisnumerical simulation
万方数据
维普
