一、概述在线路新建及大修工程中,曲线缩短轨计算工作量往往比较大,计算方法很繁琐。但根据实际经验,对这种计算方法加以进一步简化是可能的。下列各式分別等于任意弧长的曲线內轨缩短量、第一阶差及第二阶差。形状如图1所示。对于缓和曲线ε=((S_1)l~2)/(2Rl_0),△ε=(S_1l)/(Rl_0),△△ε=(S_1)/(Rl_0);对于圆曲线ε=(S_1L)/R,△ε=S_1/R△△ε=0 First, an overview In the line of new and overhaul projects, the curve to shorten the track calculation workload tend to be relatively large, the calculation method is cumbersome. However, based on practical experience, it is possible to further simplify this calculation method. The following formula is equal to any arc length curve within the rail shortening, the first difference and the second difference. Shape shown in Figure 1. ΔΔ = (S_1) / (Rl_0) for the easing curve ε = (S_1) l ~ 2 / 2Rl_0, Δε = (S_1l) / (Rl_0) R, Δε = S_1 / RΔΔΔ = 0