输电塔线体系风振反应的半主动摩擦阻尼控制  

SEMI-ACTIVE CONTROL FOR WIND-INDUCED RESPONSES OF TRANSMISSION TOWER-LINE SYSTEM USING FRICTION DAMPERS

作　　者：陈波[1] 瞿伟廉[1] 郑瑾[2] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070 [2]武汉理工大学设计研究院,武汉430070

出　　处：《工程力学》2009年第1期221-226,237,共7页Engineering Mechanics

基　　金：国家自然科学基金项目(50708083);贵州省教育厅自然科学重点项目(工程结构强震突变损伤识别技术研究)资助

摘　　要：该文研究了智能半主动摩擦阻尼器对输电塔线体系风振反应的控制问题。该文提出了一种适用于输电塔结构风振控制的半主动摩擦阻尼器力学模型,建立了输电导线动力分析的多自由度模型,并建立了塔线耦联体系的受控动力分析模型和动力分析方法。基于半主动摩擦阻尼器的特点,提出了抑制结构风振反应的两种半主动控制策略。通过数值研究考察了半主动摩擦阻尼器对输电塔线体系风致振动响应的控制效果,并进行了相应的参数研究。研究表明,半主动摩擦阻尼器形式简单、具有较好耗能能力,可以有效地抑制输电塔的风致振动。The wind-induced vibration mitigation of transmission tower-line system using friction dampers is investigated in this paper. A configuration of semi-active friction damper for transmission tower is presented and the multi-degree-of-freedom model of transmission line is established firstly. Thereby, this paper develops the dynamic analysis model and analytical method of transmission tower-line system incorporated with friction dampers. Then, two control strategies are proposed for the wind-induced response mitigation based on damper properties, and the control performance is examined numerically. It is found that the semi-active friction dampers are suitable for the wind-induced vibration control of transmission tower-line system due to its simple configuration as well as higher energy-dissipating capacity.

关 键 词：结构 输电塔线体系 半主动控制 摩擦阻尼器 风振响应 

分 类 号：TU311.3[建筑科学—结构工程]