四、缓和曲线常数将l,=lo代入缓和曲线方程(5-6)得：l。,180°βo =1.缓和曲线切线角2R13xo = lo -2.缓和曲线终点横坐标40R?1?14Yo =3.缓和曲线终点纵坐标6R336R34.内移距pp= (yo+ Rcos β)- R