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車站設計中,綫路曲綫与相邻股道間距計算,当为单曲綫时,計算比较簡单,在設有緩和曲綫时,計算比較复杂。目前有关这方面的計算,缺乏統一、簡易可行的公式,只得在計算时去推导,因而躭擱了时間,降低了工作效率。笔者現将在工作中积累有关这方面的資料,加以整理,提供大家討論。緩和曲綫股道与相邻股道間距計算,通常有两种情况: (1)已知曲綫股道之一段切綫长度,求垂直于切綫或曲綫的綫間距; (2)已知曲綫股道上一段弧长,求垂直于切綫或曲线的間距。以上两种綫間距計算是可以用切綫支距法来求得。一、緩和曲綫之理論及公式图1为緩和曲綫图,其有关符号为:
In the station design, the line curve and the adjacent line spacing are calculated. When it is a single curve, the calculation is relatively simple. When there is a relaxation curve, the calculation is complicated. At present, there is a lack of a unified and simple formula that can only be deduced from the calculation in this respect. As a result, time is lost and work efficiency is reduced. The author will now accumulate in the work of this information, to be collated to provide you with discussion. There are two general conditions for easing the calculation of the pitch between adjacent strands of a curve: (1) the length of the tangent to a section of a known curve, seeking the line spacing perpendicular to the tangent or the curve; (2) the known curve A section of arc length, seeking perpendicular to the tangent or curve spacing. The above two kinds of line spacing calculation can be obtained using the tangent offset method. First, the theory and formula to ease the curve Figure 1 for the easing curve, the related symbols: