摘要
提出了一种针对安装了摩擦阻尼器的高耸塔架结构的双模型动力分析方法。为满足摩擦阻尼器对高耸塔架结构振动控制的特殊需要 ,建立了高耸塔架结构的三维空间有限元静力模型和二维串联多自由度动力模型 ,并在形成控制力变换矩阵和计算摩擦阻尼器两端的相对位移的过程中综合地运用了这两种力学模型。
A bi model method is put forward to determine the dynamical responses of friction damped high rise truss tower.The analytical procedure involves two models of one truss tower:one is the two dimensional lumped mass dynamic model and the other is the three dimensional finite element static model.These two models are alternately used to fulfill control force transformation, displacement increment transformation.Hefei TV tower,the highest steel tower to be erected in China,is used as an application to examine the feasibility of the bi model method and the effectiveness of friction dampers.
