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给出偏心支撑框架(EBF)的优化设计方法,将其作为被动控制手段应用于建筑结构的抗震设计中。在EBF梁与支撑的连接件处设置加劲肋以提高其刚度和塑性变形能力。给出连接件加劲肋位置及厚度的优化设计方法,采用Tabu搜索算法求解最优解,其目标函数为破坏前的塑性能量耗散。采用有限元软件计算静态循环荷载作用下连接件的变形,结果显示,通过微单元优化可以提高连接件的耗能能力。
The optimal design method of eccentric support frame (EBF) is given and used as a passive control method in the seismic design of building structures. Stiffeners are provided at the connection between the EBF beam and the support to increase its stiffness and plastic deformation. The optimal design method of the stiffener position and thickness is given. The Tabu search algorithm is used to solve the optimal solution. The objective function is the plastic energy dissipation before failure. Finite element software is used to calculate the deformation of the connector under static cyclic loading. The results show that the energy dissipation capacity of the connector can be improved through the optimization of the micro-unit.