模拟脉动风速场下高层结构调谐质量阻尼器群智能优化控制  

Intelligent optimal control of tuned mass damper groups for high-rise structure excited by simulated fluctuating wind speed field

作　　者：王小金[1,2] 朱大勇[1,2] 黄伟[1,2] 刘诚[1,2] 卢坤林[1,2] 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]土木工程结构与材料安徽省级实验室,合肥230009

出　　处：《建筑结构》2015年第19期41-47,共7页Building Structure

基　　金：国家自然科学基金资助项目(51179043)

摘　　要：利用抽取时间的快速傅里叶变换技术优化谐波叠加法,根据Davenport脉动风速谱,模拟了风速时程曲线,在生成的脉动风速谱密度曲线中,目标谱与模拟谱走势高度一致,为风振控制计算的精确性提供了有力保证。高层结构采用的是国际通用的第二代Benchmark模型,控制方法为调谐质量阻尼器(TMD)控制;并引入粒子群优化算法,以结构层绝对位移和的无穷范数为目标函数进行了优化研究;为考察此方法的鲁棒性,分别对结构考虑了无刚度不确定性以及具有±15%刚度不确定性的情形,数值计算结果表明了优化TMD控制在高层结构风振控制中的有效性,为人工智能技术在传统结构振动控制领域的应用提供了广阔的思路。The Fast Fourier Transform technology based on Decimation In Time （DIT-FFT） was employed to optimize the harmonic wave synthesis method, and the wind speed time-history curves were numerically simulated according to Davenport fluctuating wind speed spectrum. As observed from the generated spectral density function curves, the objective spectrum was highly consistent with the trend of simulated spectrum, which provided a strong guarantee for accuracy of wind-induced vibration control computing. The second generation Benchmark structure was universal internationally, and tuned mass damper （TMD） algorithm was served as the controller for high-rise structure. Particle Swarm Optimization （PSO） algorithm was introduced to he the optimization tool, and the infinity norm of Layer Absolute Displacement Sum （LADS） was selected as the fitness function to carry out optimization study. In addition, no uncertainty and ＋ 15% stiffness uncertainty in stiffness were considered respectively for robustness study. The numerical calculation results reveal that optimal control of TMD has an excellent capability in reduction of the wind-induced vibration of the high-rise building, and it can provide a broad view for application of artificial intelligence technology in traditional structural vibration control field.

关 键 词：调谐质量阻尼器 谐波叠加法 Benchmark结构 层绝对位移和 粒子群算法 

分 类 号：TU112.41[建筑科学—建筑理论]