超高层空中L形钢连廊整体提升过程的减振控制与设计

Vibration reduction control and design of the overall lifting process of L-shaped steel corridor in super high-rise buildings

针对钢结构连廊的整体提升,推导了TMD减小被提升结构风振响应的理论公式,采用Python编制了可视化TMD减振系统设计平台,对超高层空中L形钢连廊提升过程中的风振响应进行了分析,得到以下结论:1)基于TMD减振力学模型开发的减振设计程序,能够准确的对被提升结构进行TMD减振分析,并确定最优的TMD设计参数;2)地铁金融城项目的L形钢连廊在提升过程中,采用TMD减振技术后,对阵风引起的振动幅度减小35%,振动时间减小83.9%;3)TMD技术能够有效的控制风荷载作用下被提升结构的振动幅值和振动时间。

A theoretical formula for TMD to reduce the wind induced vibration response of the lifted structure was derived for the overall lifting of the steel structure corridor.A visual TMD vibration reduction system design platform was developed using Python to analyze the wind induced vibration response of the L-shaped steel corridor during the lifting process in super high-rise buildings.The following conclusions were obtained:(1)A vibration reduction design program developed based on the TMD vibration reduction mechanical model can accurately analyze the TMD vibration reduction of the lifted structure and determine the optimal TMD design parameters;(2)During the lifting process of the L-shaped steel corridor of the Metro Financial City project,the use of TMD vibration reduction technology reduced the vibration amplitude caused by gusts by 35%and the vibration time by 83.9%;(3)TMD technology can effectively control the vibration amplitude and time of the lifted structure under wind load.