[12-11 17:00:56] 来源:http://www.tmgc8.com 工程技术 阅读:3459次
1、缓和曲线(卵形曲线)参数计算
A1==59.161
卵形曲线参数:
A2=(HY2-YH1
×R2
=(271.881-223.715
= 7224.900
A2==84.999
A3==67.082
2.卵形曲线所在缓和曲线要素计算
卵形曲线长度LF由已知条件知:LF=HY2-YH1=271.881-223.715=48.166
LM=LS
=7224.900÷50=144.498
∴HZ'
LE=HY2
=A2÷R2=7224.900÷75=96.332
HY2=HZ'-LE=368.213-96.332=271.881
由上说明计算正确
3.HZwww.tmgc8.com'
①
Xn=[(-1)n+1×L4n–3]÷[(2n-2)!×22n–2×(4n-3)
×(RLs)2n–2]
Yn=[(-1)n+1×L4n–1]÷[(2n-1)!×22n–1×(4n-1)
×(RLs)2n–1]
公式中符号含义:
n
!—
R
Ls
②
X=L-L5÷[40(RLS)2]+L9÷[3456(RLS)4]–L13÷[599040(RLS)