CHOICE OF RATIONAL VALUES OF MAXIMUM SLOPE IN DESIGN HIGH-SPEED LINES

In railway construction, in particular, the design of high-speed lines, the choice of the maximum gradient ? a complex problem, because of its size depends on a number of operational and construction parameters. Selecting solutions associated with time-consuming calculations are simplified by the use of econometric models. Existing models allow you to choose the most rational design options, but do not include funding for the construction, which are often limited. Such a situation could complicate the choice of the best option, and requires further study. Purpose. To develop a model that would allow to choose rational parameters of the longitudinal profile in the design of high-speed railways in Ukraine, taking into account the level of funding. Conclusion. To develop a methodology of rational choice effective design options, which is based on a mathematical model and differs from existing in that it allows a rational distribution of funds in view of the limited investment projects. The application of the developed technique will facilitate implementation of state programs on improving the speed and energy savings in the railway industry.