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

高层建筑属于柔性结构，对动力激励具有很高的敏感性。对于这些类型的 从适用性的角度来看，普通风荷载引起的振动可能会造成问题 以及居住者的舒适感。调谐液体阻尼器(TLD)是一种被动减振器，可用于 控制高层建筑的风致振动。由于他们的低价，他们已经引起了人们的注意 成本、安装简便性和最低维护要求。通常，TLD是液体(通常 水)装满的水箱，利用液体晃动作用通过调节液体的晃动来抑制振动 自然频率到系统的基波振荡频率。为了实现TLD的有效设计， 它的行为以及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，设计约街一号与港湾街90号的综合用途 多伦多市中心的开发项目。该开发项目由一座35层高的商业写字楼和 两栋70层和66层的住宅楼。除了这三座塔外，还有一座重要的 零售/商业平台和一个四层的地下停车场。高层建筑的振动控制 确保居住者舒适的住宅塔楼是该项目面临的重大挑战之一。在……里面 此次合作研究，多伦多大学课题组将开发一种新的多平台 模拟工具获取混合用途开发住宅塔楼的动力响应 用的是TLD。在这项合作研究中将生成的数字数据库将使高效的 将TLD设计为具有成本效益和免维护的补充能量耗散装置；这将在 反过来又有利于安全、经济地建造更高的结构。

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.