【摘要】 以结构在随机激励作用下的振动控制问题为研究对象.通过等效激励法构造具备随机谱特征的等效地震荷载时程作为输入,从而将频域范围内的结构随机振动控制问题转化为时域问题进行计算分析.利用遗传算法的0,1染色体编码模拟阻尼器的楼层空间布置,实现了阻尼器数目指定情况下,以楼层最大加速度和层间位移角为控制目标函数的阻尼器最优布置方案.仿真分析表明:该优化措施针对性强,效果显著.更多还原

【Abstract】 In the paper,the optimization of dampers of a controlled structure under seismic excitation is studied,the equivalent excitation method is employed to simulate the earthquake excites,while a hybrid control is conducted by using dampers and an actuator.To improve the efficacy of the optimization,a 0-1 chromosome coding of genetic algorithm is used to represent the spatial arrangement of dampers.Several typical cases are calculated through adjusting the fitness objectives composed by maximum acceleration responses and maximum inter story angles.The simulation results show that the proposed method has some plausible features for engineering application.更多还原