大跨度屋盖风振控制的遗传算法研究-《郑州大学学报(工学版)》

文章信息/Info

Title:: Study on Genetic Algorithms in Controlling of Wind-inducedVibration of Long-span Roofs

作者:: 孙文彬; 孙芳锦.; 辽宁工程技术大学建筑工程学院,辽宁阜新,123000, 辽宁工程技术大学建筑工程学院,辽宁阜新123000;同济大学土木工程防灾国家重点实验室,上海200092

Author(s):: SUN Wenbin; SUN Fangjin; 1. Institute of Civil Engineering & Architeclure, Liaoning Technicsl lniverity, Fuxin 123000, Chin*; 2. Stnte Key laboratoryfor Disaster Reducton in Civil Engineering, Tongji University, Shanghai 200092, China

Keywords:: long-span roofs; wind-induced vibration control ; genetic algorithm ; ATMD ; active control

摘要:: 对大跨度屋盖的遗传算法风振控制进行了研究,提出了一种采用主动调谐质量阻尼器(ATMD)进行风振控制的方法.首先介绍了风振控制理论,然后提出了大跨度屋盖风振控制的遗传算法,将位移和加速度响应均方差作为了控制效率的评价标准,并给出了该方法的实施步骤.最后将该方法应用于一大跨度平屋盖的风振控制,计算了屋盖上典型测点的位移和加速度均方差值,并与采用其他控制方法的计算结果进行了比较.结果发现笔者提出的遗传算法控制器准确高效,其中位移和加速度均方差分别平均减少了53.8％和44.6％,结构竖向位移峰值平均减少65.7％,加速度峰值平均减少56.2％,有效地控制了屋盖结构的风振响应.结果证明遗传算法可以准确预测相关参数,进而有效地控制大跨度屋盖风振响应,为工程实践提供了相应参考.

Abstract:: A genetic algorithm based control design is proposed to control wind-induced vibration of long-spanroof in this study, An active tuned mass damper ( A’TMD ) controller is designed using the proposed methodolo-gy. Wind-induced control theory is presented firstly, The root mean square of displacement and aecelerationresponses are used as the evaluation criteria of control eliciency. Then procedures for control of wind-inducedvibration of long-span roofs based on genetic algorithms are given, Finally the method is applied to the controlof wind-induced responses of a long-span roof, The root mean square of displacement and acceleration respon.ses is caleulated for some typical measuring points, And the results are compared with those obtained from oth.er controller, The overall results of GA-based controller are accurate and efficient, The root mean square val.ues of displacement and acceleration of the sample points are reduced by 53.8% and 44.6% on average, re.spectively. GA-based controller reduces peak vertical displacement and acceleration of all sample points by65.7% and 56, 296 on average, respectively. GA-based control design methodology can obviously reducewind-induced vibration of long-span roofs, As an accurate and effective tool in wind-induced vibration control.the proposed method can provides some references for praetical projects.