Vibration control of a high-rise structural development in downtown Toronto

多伦多市中心高层建筑开发的振动控制

• 批准号: 486047-2015
• 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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=585358
• 关键词: Vibration; control; rise; structural; development

High-rise buildings are flexible structures with high sensitivity to dynamic excitation. For these types of buildings, vibration caused by ordinary wind loading may create problems from the viewpoint of serviceability and comfort of the occupants. Tuned liquid dampers (TLDs) are passive vibration absorbers that can be used to control wind-induced vibrations of high rise buildings. They have attracted attention as a result of their low cost, ease of installation and minimal maintenance requirements. Typically, the TLD is a liquid (generally water) filled tank that uses liquid sloshing action to dampen oscillations by tuning the sloshing of the liquid's natural frequency to the system's fundamental oscillation frequency. To enable the efficient design of a TLD, its behaviour and interaction with the structure need to be well understood. Stephenson Engineering is currently engaged as the structural consultants designing the One York Street and 90 Harbour Street Mixed Use Development in downtown Toronto. This development consists of a 35-storey commercial office building and two residential towers of 70 and 66-storeys. In addition to the three towers there is a significant retail/commercial podium and a four level underground parking garage. The control of the vibration of the tall residential towers to ensure the comfort of the occupants is one of the significant challenges on this project. In this collaborative research, the University of Toronto research group will develop a new multi-platform simulation tool to obtain the dynamic response of the Mixed Use Development residential towers equipped with TLDs. The numerical database that will be generated in this collaborative study will enable the efficient design of TLDs as cost-effective and maintenance-free supplemental energy dissipation devices; this will in turn facilitate safe and economical construction of taller structures.

高层建筑是柔性结构，对动力激励具有很高的敏感性。对于这些类型的 建筑物，由普通风荷载引起的振动可能会从使用性的角度产生问题 和舒适的居住者。调谐液体阻尼器（TLD）是被动减振器，可用于 控制高层建筑的风致振动。他们的低收入吸引了人们的注意， 成本低、易于安装和最低的维护要求。典型地，所述水是液体（通常为 水）填充的罐，其通过调节液体的晃动来使用液体晃动动作来衰减振荡 系统的基本振荡频率。为了能够有效地设计一个天线， 它的行为和与结构的相互作用需要得到很好的理解。斯蒂芬森工程公司目前 受聘为结构顾问，负责设计约克街一号及港湾街90号综合用途 多伦多市中心的发展。该项目包括一幢35层高的商业办公楼， 两座分别为70层和66层的住宅大楼。除了这三座塔之外， 零售/商业裙楼及四层地下停车库。高层建筑的振动控制 确保居住者的舒适度是该项目的重大挑战之一。在 这项合作研究，多伦多大学的研究小组将开发一个新的多平台 仿真工具，以获得动态响应的混合使用开发住宅塔楼配备 用TLD。将在这项合作研究中产生的数字数据库将使有效的 将TLD设计为具有成本效益和免维护的补充耗能装置;这将 从而有助于安全和经济地建造更高的结构。