【摘要】 采用SAP2000有限元分析软件通过对等长腿输电塔和长短腿输电塔在地震作用下的动力时程反应进行分析。比较几种输电塔结构的抗震动力响应,计算结果表明:长短腿铁塔较等长腿铁塔,整体刚度大,控制点处位移小,顶点速度、加速度小,短腿处轴力大;越往塔顶,减少同样的长度,控制点位移的每次减少量越来越小,顶点速度、加速度的每次减少量越来越小,短腿处轴力的每次增量越来越小。更多还原

【Abstract】 Based on the finite element software SAP2000,the estimating seismic responses transmission towers with unequal legs by time-history method have been analysed,and the conclusion has been made as follow: Tower of equal legs is larger than tower of unequal legs on the overall stiffness and axis force of shot legs,but is smaller on displacement of control point and speed and acceleration of vertex;Reduction of the same length,control point displacement,the vertex speed,acceleration of each reduction is more and more smaller and short legs at each increment of axial force is getting smaller and smaller.更多还原