大跨越档架空线索弧垂的研究

Study on Overhead Wire Rope Sag for Large Crossings

在输电线路大跨越档施工中 ,常遇到架空线索承受线体本体均布自重荷载、架空线索承受导线均布自重荷载 (2种均布自重荷载 )以及在架空导线上乘飞车安装附件 (均布自重荷载和集中荷载 )等情况。文章针对上述 3种情况 ,以大跨越档低悬挂点为坐标原点 ,推导出架空线索悬垂函数和弧垂函数。

In construction of large crossing spans of the transmission lines the overhead wire ropes are encountered usually to bear the uniformly distributed self load of the rope body, uniformly distributed self load of the conductors (two kinds of uniformly distributed self load) and installed accessories on the overhead conductors by cycles (uniformly distributed self load and central load) and other loads. In view of the previous three cases the paper has derived the suspense sagging function of overhead wire ropes and sag function for the overhead wire ropes, taking the lower suspension point of the large crossing span as the origin of coordinate.