METHOD TO ESTIMATE TRACK STATE Russian patent published in 2010 - IPC E01B35/00 

FIELD: transport.

SUBSTANCE: proposed method consists in that track position at certain car speed, its position with respect to level and in plan and track width are measured. Prior to departure, mathematical model of interaction between estimated track section and train crew is loaded into computer for required train speed as well as track position parametres. Irregularities on rain working surface are measured, as well as coefficient of elasticity of rail base and coefficients of damping and rigidity in car couplings. In car motion, set of algebraic equation and differential equitation of mathematical model describing interaction between crew and track are used to calculate coefficient of resistance of assembled rails and sleepers against transverse shift, coefficient of safe wheel flange creeping onto rail, dynamic width of track, basic strains in rail base and head, tensor of rail contact strains, lengthwise forces caused by track displacement. Aforesaid magnitudes are compared with tolerances.

EFFECT: valid data on track state.

8 dwg