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此文述及一种新的索线拨正弯道的理論,并提出一种新的分配誤差的方法。文中借φ~l图的帮助,导出一套基本公式;同时指出:任何曲綫的正矢总和的值为~lK~I/2,此处l~K为弦长,I为偏角,此值可作为現場測得实数的检核。由公式(2)給出任何种数緩和曲綫的正矢計算法。(此文中以第二种立体緩和曲綫为例)此文証明了鋼軌拨量在φ~l图为介于两曲线间的面积,并可用公式(12)計算出来;另外并应用了最小二乘法原理来分配它所产生的誤差。总的来说,用此法拨正弯道,其精度得以提高。 最后举了两个例子来說明用法。第一例系說明将旧緩和曲綫改拨为新緩和曲綫的方法,第二例說明三点固定的弯道拨正法。
This article describes a new theory of cable alignment and proposes a new method of allocation error. In this paper, a set of basic formulas is derived with the help of φ~l graphs. It is also pointed out that the sum of the positive vectors of any curve is ~lK~I/2, where l~K is the chord length and I is the declination angle. It can be used as a real-validity check on site. Formula (2) gives the positive vector calculation for any kind of mitigation curve. (In this paper, the second three-dimensional relaxation curve is taken as an example.) This paper proves that the rail shift in φ~l map is the area between two curves, and can be calculated by formula (12); in addition, the least squares method is applied. The principle is to allocate the error it produces. In general, the use of this method to set up a positive curve has improved its accuracy. Finally, two examples are given to illustrate usage. The first example shows how to change the old easing curve to the new easing curve. The second example shows the three-point fixed curve clinching method.