基于遗传算法的高层建筑MR阻尼器优化布置

目的 解决高层建筑结构风振控制中MR阻尼器的优化布置问题．方法 首先建立风荷载作用下受控结构的力学模型和运动方程。然后根据其特点建立基于遗传算法的风荷载作用下结构体系的MR阻尼器优化布置分析模型。并引入加权函数考虑结构的安全性和经济性。得到不同标准下的阻尼器优化方案．结果 结合某12层钢筋混凝土框架结构的算例。考虑3种不同决策情况：安全性和经济性同等重视、侧重于安全性和侧重于经济性。分别给出建议的最优布置方案．结论 应用遗传算法进行高层建筑中MR阻尼器的优化布置。可以得到经济而有效的结构控制设计方案．

Optimum Installation of the MR Dampers for the High-rise Structures by Genetic Algorithm

An optimal installation method of MR dampers using genetic algorithm(GA)is put forward in order to reduce the vibration responses of high-rise building under wind load.The dynamic model and equation of motion of the structural system are firstly set up and some parameters are determined.Moreover,an optimal installation model based on genetic algorithm is set up and some weight coefficients for safety and economy are induced.So variety of installation plans are derived numerically from different standard levels.In order to illustrate the simulating procedures,a 12-story reinforced concrete frame structure is used numerically as an example to show the optimal steps and main ideas and the optimal placement schemes are suggested at the end.The results of the simulation show that GA can be used effectively and economically in the optimal installation design of MR dampers in high-rise buildings to decrease the structural vibration responses.