阻尼连接塔结构的动力响应分析

Dynamic Response Analysis of Elastic and Viscous Damping Connected Tower Structures

本文提出框架与塔之间用粘滞阻尼器连接,以减少附加外框架的石化高塔结构在风荷载作用下的动力反应.将这类结构简化为悬臂梁与弹簧和阻尼连接结构.基于经典梁理论,本文建立了分段连续梁的自由振动控制方程,求解了附加弹簧和阻尼系统的固有频率,并利用数值方法讨论不同物理参数对系统固有频率的影响,此结论可为实际工程中框架塔优化设计提供理论依据.

In this paper,viscous dampers are proposed to connect the frames and towers to reduce the dynamic response of tower structures under wind loads.The structure is simplified as a cantilever beam connected with spring and damper.Based on the classical beam theory,this paper establishes a free vibration control equation of piecewise continuous beam,solves the problem of the natural frequencies of the additional spring and damping system,and discusses the influence of different physical parameters on the natural frequencies of the system with numerical method.The conclusion can provide a theoretical basis for the optimal design of the frame tower in practical engineering.