为了提高行车速度,线路上限制速度的弯道需要进行改建。如果弯道比较长,必须进行大型改线工程,但旧线上有许多不长的弯道往往可用拨移轨道的小改方法来加长缓和曲线或加大圆曲线的半径。用拨移轨道法校正或改进弯道线向,到目前为止大都采取人工验算的正矢“限差”校正法,这种方法计算繁复,现场实施不易掌握,且会发生拨移量多于必需的倾向。 In order to improve driving speed, the curve of the speed limit on the line needs to be rebuilt. If the curve is longer, a large-scale rerouting project is necessary. However, there are many not-so-long curves on the old line, which can often be extended by a small modification of the track orbit to increase the curve or increase the radius of the circle curve. By using the track-and-track method to correct or improve the curve direction, most of the positive check-up “limit error” correction methods adopted so far have been adopted. This method is complicated to calculate and difficult to control in the field and more than necessary Propensity.