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本文对丘陵地区新建铁路在带状区域内的平纵断面联合优化问题进行了研究,根据所要解决的问题提出了一种新方法——RDB(Random Search—DynamicProgramming—B-spline Methods)方法。这种方法是把随机搜索法、动态规划法和B样条函数法有机地联系在一起的一种方法。本文介绍了这种方法的数学理论和如何解决在局部区域内的线路自动优化问题。根据RDB方法的原理,编制了一套丘陵地带局部区域内平纵断面联合优化程序,并进行了自动优化设计试验,得到了预期的、命人满意的效果。通过分析认为,RDB方法具有比选方案多,优化速度快,能直接与数字地形模型连接,大量节约人力、物力等优点。
This paper studies the joint optimization of horizontal and vertical sections of newly built railways in the hilly region, and proposes a new method based on the problem to be solved, RDB (Random Search-Dynamic Programming-B-spline Methods). This method is a method of organically linking the random search method, the dynamic programming method, and the B-spline function method together. This article describes the mathematical theory of this method and how to solve the problem of automatic circuit optimization in local areas. According to the principle of the RDB method, a set of joint optimization programs for the horizontal and vertical sections in the local area of the hilly area were compiled, and an automatic optimization design experiment was conducted to obtain the expected and satisfying results. Through analysis, it is believed that the RDB method has more options than alternatives, and the optimization speed is fast. It can directly connect with the digital terrain model and save a lot of manpower and material resources.