Improvement of the switch counter-rail lining design

Abstract

The element of the upper structure of the railway track - the switch counter-rail lining is studied. A variant of the serial design of the PKZhDL-65-4 counter-rail lining is considered. The analysis of the failure rate of counter-rail linings is carried out, and the results of observations of the condition of the linings in different regions are presented. The destruction zone is localized and its character as a multi-cycle fatigue destruction is determined. The information about the conducted complex of experimental studies for investigation of the stress-strain state in the dangerous zone of the lining is presented. To carry out the design studies, the design schemes of the counter-rail lining were developed. Calculated studies of the influence of various factors on the level of stresses acting in the hazardous area of the structure are performed. The influence of the type of the design scheme, the stiffness of the rubber shock-absorbing lining and the properties of the sleeper material is studied. Variants of counter-rail lining designs for reducing the level of stresses acting in the dangerous zone are proposed. Computational studies were conducted to optimize the proposed lining options in order to reduce material consumption. The results of testing of new lining structures on the switches of the South Ural Railway are presented. The information about the conducted complex of experimental studies for investigation of the stress-strain state in the dangerous zone of the lining is presented. To carry out the design studies, the design schemes of the counter-rail lining were developed. Calculated studies of the influence of various factors on the level of stresses acting in the hazardous area of the structure are performed. The influence of the type of the design scheme, the stiffness of the rubber shock-absorbing lining and the properties of the sleeper material is studied. Variants of counter-rail lining designs for reducing the level of stresses acting in the dangerous zone are proposed. Computational studies were conducted to optimize the proposed lining options in order to reduce material consumption. The results of testing of new lining structures on the switches of the South Ural Railway are presented.