Experimental investigations of tall/slender structure vibration control

高/细长结构振动控制实验研究

• 批准号: 461023-2013
• 负责人: Mercan, Oya
• 金额: $ 1.82万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=542421
• 关键词: Experimental; investigations; tall; slender; structure

Towers are used as the optimal physical supports for many applications. They enable, for example, the installation of large television, radio and mobile communication platforms. Similarly, the most common configuration of a wind turbine tower that harvests wind energy consists of a three-bladed rotor/gear/generator system sitting on top of a tall, slender tower typically constructed of tubular steel or precast concrete. These are lightweight structures with great flexibility, and are characterized by their high sensitivity to dynamic excitation. Thus there are concerns about the structural safety of these slender structures under dynamic loading such as that caused by wind or earthquakes. By using a state-of-the-art testing method implemented by University of Toronto research team, and building upon the experience of the industry partner, the proposed study will experimentally investigate the dynamic behaviour of a supplemental damping device (i.e., ring-shaped TLD) designed to mitigate the vibrations of slender structures. The resulting experimental data base will enable the efficient design of this cost-effective and maintenance-free supplemental energy dissipation device, which in turn will facilitate safe and economical construction of taller structures

塔被用作许多应用的最佳物理支撑。例如，它们能够安装大型电视、广播和移动的通信平台。类似地，收获风能的风力涡轮机塔的最常见构造包括位于通常由管状钢或预制混凝土构造的高的细长塔的顶部上的三叶片转子/齿轮/发电机系统。这些都是具有很大灵活性的轻质结构，其特点是对动态激励的高灵敏度。因此，人们担心这些细长结构在诸如风或地震引起的动态载荷下的结构安全性。通过使用由多伦多大学研究团队实施的最先进的测试方法，并基于行业合作伙伴的经验，拟议的研究将通过实验研究补充阻尼装置的动态行为（即，环形阻尼器），旨在减轻细长结构的振动。由此产生的实验数据库将使这种具有成本效益和免维护的补充消能装置的有效设计成为可能，这反过来又将促进更高结构的安全和经济建设