铁路定线方案比选的一种新方法

A New Method of Route Comparison in Railway Location

在给定的线路平面上,利用数字地形模型,求出沿线地面标高,根据这些标高,用B样条函数法拟合出纵断面,在此纵断面线上作牵引计算,得到合力曲线和列车走行时分,并计算出线路通过能力、工程费和运营费,进行该平面线的各项评估.

Here a set of algorithms are studied. On one plan line, by use of the numeral topography model (NTM), the ground elevation could be obtained. Then by the B-spline method the profile can be fitted out. Based on these elevations, the traction power can be calculated and then the curve of the relation between resultantforce and velocity and travel time can be given by use of these data. The running capacity and the construction cost would be obtained so that we can have all kinds of evaluations about this plan line.