Research on the application of anchor rod static pressure pile concrete reinforcement for existing buildings
In order to improve the seismic performance of existing buildings reinforced with anchor rod static pressure pile concrete,a comparative analysis was conducted on the failure modes,hysteresis curves,skeleton curves,stiffness degradation,and energy dissipation capacity of composite beam structures(HA-1,HA-2,HA-3)and frame beam+column structures(HA-4)specimens.The results indicate that all four types of specimens undergo cracking,yielding,peak and ultimate stress stages during the loading process,and the surface failure morphology of each specimen is also different.The hysteresis curves of the four groups of samples are relatively full,showing an overall anti S shape,but the degree of pinching of the hysteresis curves varies among different specimens.Compared to the other three groups of specimens,the cumulative energy dissipation rate of the HA-4 specimen before reaching the peak load is significantly higher than that of the other specimens,and overall,the energy dissipation capacity of the composite beam structure specimen is lower than that of the frame beam+column structure specimen(HA-4).
anchor rod static pressure pile concretereinforcementseismic performancefailure morphology
万方数据
