(完整word版)缓和曲线参数方程.docx

文档介绍：缓和曲线坐标计算缓和曲线参数方程:x0=L-L5/(40*R2*Ls2)y0=L3/(6*R*Ls)-L7/(336*R3*Ls3)L:里程距R:圆曲线半径Ls:曲线长度偏角: △i=Li/(2R)<rad>=90°/PI()*Li/R2△i=30°/PI()*Li2/(R*Ls)Li:待测点到ZY或YZ的曲线长度偏距:S= (x02+y02)1/2汉语拼音英文缩写JD:转角点交点IPZD:转点TPZY:直圆点BCQZ:曲中点MCYZ:圆直点ECGQ:公切点CPZH:直缓点TSHY:缓圆点SCYH:圆缓点CSHZ:缓直点ST直线坐标正算X=x+d*cosAiY=y+d*sin△i△i=tan(Yi-Y2)/(Xi-X2)O'T=2xlil-i2i-O=L=RIL-PI外/E=T2/2R^:+y)2=R2+x22R^=x2-y2Ehiy2馭2 弓轴y=x2/2R