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本文给出了一种用数字地面模型进行铁路纵断面自动设计的方法。文中叙述了铁路线路纵断面优化设计的数学模型;阐述了目标函数负梯度的计算方法、约束矩阵的结构、利用数模获取地形资料的方法以及由电子计算机生成初始纵断面的方法。作者根据纵断面设计的步骤,编制了相应的程序系统,并用所编程序对实际线路纵断面进行了自动设计,结果令人满意。文末示出算例。
In this paper, a method of automatic design of longitudinal section of railway using digital terrain model is given. This paper describes the mathematical model of the optimization design of the longitudinal section of the railway line. It also expounds the calculation method of the negative gradient of the objective function, the structure of the constraint matrix, the method of obtaining the terrain data by using the digital model and the method of generating the initial profile by the electronic computer. Based on the steps of longitudinal section design, the author has compiled the corresponding program system, and has designed the actual line longitudinal section automatically with the programmed program, the result is satisfactory. An example is shown at the end of the text.