高强箍筋混凝土柱的耗能性能

为了研究使用CRB550级高强钢筋替代普通钢筋作为钢筋混凝土柱构件箍筋使用的可行性,对5根不同等级箍筋的RC柱构件进行低周往复加载试验,再使用有限元软件对其进行模拟,将试验结果与模拟结果进行对比,验证有限元模拟的可靠性.通过调整纵筋及箍筋直径、箍筋间距、柱截面尺寸等参数设计模拟了8根柱构件,从构件的延性和耗能角度研究不同等级箍筋柱构件的抗震性能.结果表明,使用CRB550级钢筋替代HRB400级钢筋作为RC柱的箍筋后,RC柱的延性性能会适当提高,耗能性能变化不大,说明CRB550级钢筋可以替代HRB400级钢筋作为RC柱构件的箍筋使用.

Energy dissipation performance of RC column

In order to study the feasibility of using the CRB550 high-strength reinforcement instead of ordinary reinforcement as reinforced concrete(RC)column component stirrup, low-cycle cyclic loading tests were performed using five RC column components with different stirrup grades, and the RC column components were simulated with finite element software. The experimental measurements were compared with the simulation results to verify the reliability of finite element simulation. Eight column components were simulated through adjusting such parameters as longitudinal reinforcement and stirrup diameters, stirrup spacing and column section size. The seismic performance of column components with different stirrup grades was studied from the perspectives of component ductility and energy dissipation. The results show that when the CRB550 grade reinforcement is used as the stirrup of RC column instead of the HRB400 grade reinforcement, the ductility of RC column can be properly improved, and the energy dissipation performance will change inconsiderably, showing that the CRB550 grade reinforcement can replace the HRB400 grade reinforcement as the stirrup of RC column components.