单摆趋近法在搜索线外点位置中的应用

搜索路线外一点到路线的垂直距离和对应桩号是设计中的常见问题，在立交端部搜索中尤为重要。本文基于Gauss—Legendre数值积分法路线中桩坐标、方位角计算模型和二分法，提出了一种适用于立交端部搜索中的定点求桩算法一单摆趋近法，并利用该算法结合AutoCAD VBA编制了相关程序，对算法的运行效率进行了分析。

The Application of the Pendulum - approach Method in Searching the Position of Point outside the Route

Searching the corresponding route stake number and its vertical distance of the point outside the route is the problem we always meet in designing, which is particularly important in searching the interchange ends region. This paper puts forward a new algorithm - pendulum - approach method, based on the Gauss - Legendre numerical integration method＇s route stake coordinate and azimuthal angle calculation, dichotomy method. In the end the algorithm and AutoCAD VBA was applied to program and analyze the operational efficiency of the algorithm.