О равновесном уклоне станционного профиля

Abstract

Objective: Defi nition of slope gradient for station track profi le elevation at which self-induced runningoff of loose running stock. Methods: Simulation of rolling stock movement based on analytical solution of differential equation of equilibrium of cut of wagons. Cut of wagons on station track is treated as a solid on a gradient plane with a mass equal to the mass of the cut of wagons. Track profi le elevation is approximated by piecewise-linear right line. Results: The paper shows that hopper wagons have the highest probability of self-induced running-off due to high air resistance coeffi cient. For three-element profi le the hypothetic wind speed at which running-off of wagons is possible remains relatively low, about 14 metres per second, which leaves the problem of effective fastening of wagons at stations still current. Practical importance: The solution obtained permits evaluating the probability of running-off of loose rolling stock under the action of gravity and under the impact of wind loading, as well as refi ne the norms for fastening of wagons at a station. The proposed calculation scheme also permits gauging the strength with which moving wagons would impact the backing thrust in case it is installed at the end of a track section.