拉线塔是一种含有柔索的非线性结构。在冲击波荷载作用下,拉线塔在三维空间内会产生大范围的非线性位移,用工程上常用的模型简化方法来分析大变形拉线塔的误差比较大。本文采用非线性有限元法编制的可在微机上运行的拉线塔非线性静、动力分析程序,计算了单根柔索的阶跃冲击响应与冲击波荷载作用下拉线塔的非线性几何大变形动力响应,计算结果与有关文献的计算结果以及试验结果非常吻合。 A cable tower is a nonlinear structure with a soft cable. Under the action of shock wave, the cable tower will produce a large range of nonlinear displacement in the three-dimensional space. The error analysis of the large-deformation cable tower with the model simplification method commonly used in engineering is relatively large. In this paper, nonlinear static and dynamic analysis programs of a cable-stayed tower that can be run on a microcomputer are compiled by nonlinear finite element method, and the nonlinear geometrical large-displacement dynamics of the pull-down tower of a single flexible cable is calculated. In response, the calculation results are in good agreement with the calculation results of the relevant literature and the test results.