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设计了13组不同构造参数的圆环耗能器,采用ABAQUS软件对安装在支撑框架结构中的圆环耗能器进行参数分析,研究圆环钢板厚度、圆环外直径、支撑角度、圆环钢板局部削弱形式和削弱深度对圆环耗能器性能的影响。研究结果表明:圆环耗能器滞回曲线稳定、饱满,塑性耗能能力强;随着圆环钢板厚度的增加或者圆环外直径的减小,圆环耗能器初始刚度和屈服力增大;支撑与横梁之间的角度对圆环耗能器性能有一定影响,交叉支撑角度宜取45°左右;圆环钢板局部削弱圆环耗能器比不削弱圆环耗能器具有更好的耗能效果;圆环钢板局部削弱形式宜采用圆弧式,且钢板削弱深度宜控制在圆环钢板宽度的20%~30%。
In this paper, 13 sets of toroidal energy dissipators with different structural parameters are designed. Parameters of toroidal energy dissipater installed in the supporting frame are analyzed by ABAQUS software. The effects of annular plate thickness, outer ring diameter, supporting angle, Effect of Local Weakened Forms and Weakening Depths on the Performance of Toroidal Energy Dissipators. The results show that the hysteresis loop of the toroidal energy dissipater is stable, full and strong in plastic energy dissipation. With the increase of the thickness of the toroidal steel plate or the decrease of the outer diameter of the torus, the initial stiffness and yield strength of the toroidal energy dissipater Large; the angle between the support and the crossbeam has some influence on the performance of the circular energy dissipater, and the cross support angle should be about 45 °; the local weakening of the annular energy dissipator by the annular steel plate is better than the non-weakening energy dissipater of the circular ring Of the energy-consuming effect; the local weakening of the circular plate should adopt the arc-type, and the depth of the weakened plate should be controlled in the annular plate width of 20% to 30%.