摘要
介绍了如何将三次参数样条插值法运用到铁路隧道断面轮廓曲线拟合的过程,及如何计算出轮廓曲线的数学表达式,并利用所求方程,对隧道断面面积进行计算,实现了其与标准隧道断面的比较,计算出了实际断面的超、欠挖面积和体积。在算法基础上,设计开发出一个应用系统———计算机辅助隧道断面测量系统,通过实验验证了该方法的正确性。这一方法的应用,将断面量测与洞室位移监测相结合,实现了隧道断面测量的数字化,改进了传统隧道断面的验收工作,降低了其外业难度,提高了测量精度。
This paper introduces the process that fit the contour of the tunnel with cubic parametric interpolatory spline.Meanwhile,it calculates the area of the profile of the tunnel by using the result of the fitting,and compares area that was calculated with standard in order to get the data of over-under-excavated value.Basing on the algorithm ,a computer system - Tunnel Profile Survey System is designed programmed.The validity of the algorithm is supported by a large number of facts.The system enhances efficiency and accuracy of results of monitoring.h also shortens the time that spent in tunnel profile monitoring and improves the quality of engineering.
出处
《计算机工程与应用》
CSCD
北大核心
2005年第26期208-211,共4页
Computer Engineering and Applications
关键词
曲线拟合
三次参数样条曲线
插值法
隧道断面测量
计算机辅助测量
fitting curve,cubic parametric spline,interpolatory algorithm,monitoring sections of tunnels,computer-aided measuring technique
