At present, the wind-induced response analysis of an overhead conductor is mainly based on the action of horizontal normal wind. However, for crossing hillsides or extremely strong winds, such a conductor will bear the action of updraft wind, which will change the geometry of the conductor and make its structural dynamic characteristics nonlinear to some extent. In this work, the in-plane and out-of-plane two-dimensional nonlinear equations were established under the action of self-weight and updraft wind. Furthermore, the improved equations of conductor tension and sag were obtained, and the wind-induced vibration response was further investigated. The results showed that the updraft wind caused the nonlinearity of the tension and sag of the overhead conductor, and the nonlinear geometric change significantly affected its resonance response, which exceeded 25% if the wind speed was 50 m/s. In addition, because the proportion of the resonance response in the total wind-induced response was different, the influence of the wind attack angle calculated using the gust response factor method on the gust response factor was slightly larger than that calculated using the the American society of civil engineers method.

目前，架空导线的风致响应分析主要基于水平法向风的作用。但是，对于穿越山坡或极强的风，这种导体将承受上升气流的作用，这将改变导体的几何形状并使其结构动力特性在某种程度上呈非线性。在这项工作中，在自重和迎风作用下建立了平面内和平面外的二维非线性方程。此外，获得了改进的导体张力和垂度方程，并进一步研究了风致振动响应。结果表明，上升气流引起架空导线的张力和垂度的非线性，并且非线性几何变化显着影响了其共振响应，如果风速为50 m / s，则超过25％。另外，由于共振响应在总风致响应中所占的比例不同，因此使用阵风响应因子方法计算出的迎风角对阵风响应因子的影响要稍大于使用美国社会计算出的值。土木工程师的方法。