压电材料智能摩擦阻尼器对高耸钢塔结构风振反应的半主动控制

压电材料是一种新型智能材料。本文将压电材料和被动摩擦阻尼器相结合设计出一种新型智能摩擦阻尼器，并采用基于经典最优控制理论的半主动控制策略对高耸钢塔结构风振反应的控制进行了研究，对国内即将兴建的第一高钢电视塔──合肥翡翠电视塔进行了算例分析。为满足摩擦阻尼器对高耸钢塔结构风振控制的特殊需要、文中还建立了房耸钢塔结构的空间桁架有限元模型和串联多自由度体系模型，并在形成广义控制力作用位置矩阵和计算摩擦阻尼器两端的相对位移的过程中综合地运用了这两种力学模型。本文研究表明，压电材料智能摩擦阻尼器可以有效地抑制高耸钢塔结构的风振反应。

Wind-induced vibration control of high-rise steel-truss tower using piezoelectric smart friction dampers

Piezoelectric material is a kind of new-type smart material. In the study of this paper.an innovative smart friction damper is designed to incorporate the piezoelectric material with passive friction damper. Based on the classical LQR theory, this paper puts forward a quasi -optimal control strategy for wind - induced vibration control of high - rise steel - truss tower using semi-active friction dampers. Hefei TV tower, the highest steel tower planned to be erected in China, is used as an analytical case to examine the control method. To meet the needs of dynamical analysis of friction-damper-equipped high-rise steel-truss tower, this paper constructs two mechanic models, which are spacial truss finite element model and series-connected multi-freedom model for high-rise tower's vibration control study. The two mechanic models are comprehensively used in establishing the broad-sensed control force location rnatrix and computing the relative displacement of the two ends of an arbitrarily located friction damper.The studies of this paper confirm the feasibility of this innovative method in the dynamical response analysis for friction-damper-equipped high-rise steel-truss tower, as well as the effectiveness of piezoelectric smart friction dampers in abating the wind-induced vibration responses.