摘要
为探讨多重液体质量双调谐阻尼器(MTLMD)参数优化算法,引入满意度理论,以满意度水平为目标函数,建立了主结构与MTLMD系统动力放大系数的三参量改进型加权满意度方程。对南京大胜关长江大桥吊杆结构MTLMD系统最优阻尼比及频率比等参数进行优化分析,得出了满意度水平、信心指数及最优参数之间的相互关系。研究结果表明:以满意度为指标的优化算法实质为将优化目标转化为最小满意度水平的最大化问题,其结果优于传统的多目标优化算法结果,该方法使得MTLMD系统优化目标明确,优化结果更加智能化,计算结果可应用于工程实际。
To investigate the parametric optimization algorithm of multiple tuned liquid mass damper,the three parameters improved weighted satisfaction degree equation with dynamic magnification factor of main structure and MTLMD system is established by using satisfaction degree objective function.The optimal damping ratio and frequncy ratio of MTLMD system with the suspenders on Dashengguan Bridge across the Yangtze River in Nanjing are analyzed,and the relationship with the satisfaction degree,confidence index and optimized parameters are obtained.The research indicates：the optimization algorithm with satisfaction degree index is to transmit the optimization objective to the realization of the maximum value of the minimal satisfaction degree essentially,the results obtained by using this algorithm is better than that with traditional optimization method,and this new algorithm makes MTLMD system optimization objective much more clear and intelligent.The results can be applied to engineering practice.
出处
《地震工程与工程振动》
CSCD
北大核心
2011年第6期186-190,共5页
Earthquake Engineering and Engineering Dynamics
基金
江西省交通运输厅科技项目(2010C00005)
关键词
满意度
TLMD
动力放大系数
参数优化
satisfaction degree
TLMD
dynamic magnification factor
parametric optimization
