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针对高耸结构环形TLD的多目标优化设计开展研究。首先,建立了高耸结构环形TLD控制的动力学模型,并编制了其求解程序。随后,提出了采用Sigmoid函数作为独立满意度函数,并通过线性加权建立了复合满意度函数。进而,基于遗传算法(Genetic Algorithm,GA),选取环形TLD的几何参数作为设计变量,结构响应和阻尼器行程的复合满意度作为优化目标,建立了高耸结构环形TLD控制的满意优化设计方法。最后,针对某自立式钢烟囱,编制程序开展了其在风荷载作用下环形TLD减振的优化设计。研究表明,该方法能够快速有效地得到一组满足工程需要且较为经济的设计参数,同时该方法对权重系数的敏感度较低,降低了多目标优化设计时权重系数选择的难度。
Aiming at the multi-objective optimization design of tower TLDs with tower structure. First of all, the dynamic model of ring-shaped TLD control with tower structure is established and its solving procedure is developed. Subsequently, Sigmoid function is proposed as an independent satisfaction function, and a composite satisfaction function is established by linear weighting. Furthermore, based on the genetic algorithm (GA), the geometric parameters of the ring TLD are selected as the design variables, the structural response and the compound satisfaction degree of the damper stroke as the optimization objectives, and a satisfactory and optimal design method for the ring-shaped TLD control of the towering structure is established. Finally, aiming at a free-standing steel chimney, an optimized design of ring-shaped TLD vibration damping under wind load was developed. The research shows that this method can get a set of more economical design parameters quickly and effectively. At the same time, this method has low sensitivity to weight coefficient, which reduces the difficulty of choosing weight coefficient in multi-objective optimization design.