Analysis and Solution of Gauge Corner Contact on Tangent of Conventional Railway Lines

Abstract:

Based on the field observations and related dynamic simulation results, this paper analyzes the gauge corner contact problem on tangent of conventional railway lines. A solution based on the individualized rail profile grinding technology was proposed in this paper and its effect in actually application is observed. The results demonstrate that lateral displacement and force state caused by asymmetric wear of the left and right wheels and the insufficient selfaligning ability caused by the lower gauge corner side of rail profile are the two main reasons for the gauge corner contact. Due to the fact that the wheel condition of freight car is not ideal, rail profile grinding can reduce the gauge corner contact probability, but it is difficult to eliminate the phenomenon only by improving the rail profile. Taken the prediction of contact position distribution between the rail profile and the measured wheel profiles as one of the checking conditions for the design result of rail grinding target profile can effectively optimize the wheel-rail contact position and then can alleviate the gauge corner contact problem.