相邻结构间被动控制装置的位置优化设计
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摘要
为了解决确定数目条件下被动控制装置在相邻结构间的优化布置问题,利用改进遗传算法和控制系统H2性能指标对控制装置的位置进行了优化。分别采用Kelvin模型和Maxwell模型模拟黏弹性阻尼器和流体阻尼器,在双体单自由度结构间设立Kelvin型或Maxwell型被动控制单元的优化参数表达式,得到相邻高耸结构间控制单元的优化参数,通过相邻超高层结构算例验证了该控制设计方案的有效性和实用性。
In order to obtain the optimal position of given number of passive dampers between two adjacent structures,an optimal arrangement was determined by using the H2 performance index and an improved genetic algorithm.The viscoelastic damper was represented by the Kelvin model and the fluid damper by the Maxwell model.The optimization parameter expressions respectively using the two model interconnecting two single degree of freedom(SDOF)systems were adopted and the optimal parameters of passive dampers interconnecting two adjacent high-rise structures were obtained.An example of two adjacent super-high-rise structures demonstrates the damping effectiveness and feasibility of the method.
In order to obtain the optimal position of given number of passive dampers between two adjacent structures,an optimal arrangement was determined by using the H2 performance index and an improved genetic algorithm.The viscoelastic damper was represented by the Kelvin model and the fluid damper by the Maxwell model.The optimization parameter expressions respectively using the two model interconnecting two single degree of freedom(SDOF)systems were adopted and the optimal parameters of passive dampers interconnecting two adjacent high-rise structures were obtained.An example of two adjacent super-high-rise structures demonstrates the damping effectiveness and feasibility of the method.
引文
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[2]Christenson R E,Spencer B F,Johnson Jr E A.Semiactive connected control method for adjacent mul-tidegree-of-freedom buildings[J].Journal of Engi-neering Mechanics,2007,133(3):290-298.
[3]Zhang Wenshou,Xu Youlin.Vibration analysis of two buildings linked by Maxwell model-defined fluiddampers[J].Journal of Sound and Vibration,2000,233(5):775-796.
[4]Zhang Wenshou,Xu Youlin.Dynamic characteristics and seismic response of adjacent buildings linked by discrete dampers[J].Earthquake Engineering and Structural Dynamics,1999,28:1163-1185.
[5]Zhu Hongping,Iemura H.A study of response con-trol on the passive coupling element between two par-allel structures[J].International Journal of Structural Engineering and Mechanics,2000,9(4):383-396.
[6]Zhu Hongping,Xu Youlin.Optimum parameters of Maxwell model-defined dampers used to link adjacent structures[J].Journal of Sound and Vibration2005,279(2):253-274.
[7]Hatada T,Kobori T,Ishida M,et al.Dynamic analy-sis of structure with Maxwell model[J].Earthquake Engineering and Structural Dynamics,2000,29:159-176.
[8]Yang J N,Lin S.Optimal design of passive energy dissipation systems based on H∞and H2performances[J].Earthquake Engineering and Structural Dynam-ics,2002,31:921-936.
[9]Arfiadi Y,Hadi M N.Optimal direct(static)output feedback controller using real coded genetic algorithms[J].Computers and Structures,2001,79(17):1625-1634.
[10]Wongprasert N,Symans M D.Application of a genet-ic algorithm for optimal damper distribution within the nonlinear seismic benchmark building[J].Journal of Engineering Mechanics,ASCE,2004,30(4):401-406.
[11]郭惠勇,张陵,周进雄,等.采用改进遗传算法的结构主动控制器优化布置[J].振动工程学报,2003,16(1):119-123.
[12]刘季,周永程,雷立宏.结构主动控制AMD系统分析及其优化设计[J].地震工程与工程振动,1996,16(3):55-60.
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