Khalipova N. Substantiation of the norms of the contents of a track in transitional curves on a straddling of removals of curvature and elevation

Object - processes of interaction of rolling stock and track; a subject - transitional curves with straddlings of removals of curvature both elevation of an outside rail; the purpose - development of the project of the norms of maintaining of a track in transitional curves with straddlings of removals of curvature both elevation of an outside rail and norms of permissible running speeds in transitional curves with such deviations; the methods - experimental with application of a statistical analysis for definition of horizontal and vertical forces, which one act on a track, theoretical with the help of mathematical modelling and calculations on IBM. Scientific novelty - the model of oscillations of the carriage on a straight section of a track, which was earlier designed in Dnipropetrovsk state technical university of a railway transport, is supplemented by the equations, which describe motion of a vehicle in sections of variable curvature; the software and computer programs for the comprehensive analysis of the main parameters of interaction of a vehicle and track are designed; are detected of regularity of influencing of horizontal oscillations of the carriage called by a creeping of wheel couples on an outside rail by a transient curve if there is straddlings of removals of curvature both elevation of an outside rail, on amplitude values of sway accelerations of a body of a coach at the different characteristics of a curve, running speeds, disturbance in the contents of transient curves etc., and also the conditions are detected, at which one parameters of interaction - factors of horizontal and vertical dynamics, sway accelerations and stability factors against вкатывания of a ridge of a sprocket on the head of a rail, reach limiting acceptable values; the new analytical expressions for definition of permissible running speeds with allowance for of padding oscillations of a body are obtained. The outcomes - are offered the norms of the contents of a track and norm of permissible running speeds of passenger trains in transient curves with straddlings of removals of curvature both elevation of an outside rail. The intrusions - used at compiling the normative documents for sites of a track , where the permissible running speeds exceeds 140 km/h and fasttrack polygons for test of a new carriage rolling stock with speed up to 180 km/h. An orb of usage - problem of interplay of a carriage rolling stock and track as at fixed, and nonsteady processes, problems of the device and contents of a track .