String lining of curve is the commonly used method in the railway maintenance work to adjust the curve track.Through calculation, the paper analyzed the advantages and disadvantages of 20m and 10m string lining of curve and came to the conclusion that when the radius is equal or less than 600m, the best choice is 10m string lining of curve method.%绳正法整正曲线是铁路维修工作中常用的曲线轨道方向整正的方法.文章通过计算,对比分析了20m弦长整正曲线和10m弦长整正曲线的优缺点,最终得出结论,在曲线半径为600m及以下的小半径曲线时用10m弦法整正曲线是较好的选择.
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