Characteristic Analysis of Curved CWR based on matlab

Abstract:
In order to meet the demand of high-quality train operation and reduce the maintenance workload, the whole section of Qinghai-Tibet Railway in Gela section was completed in 2012-2017. Among them, 550km of jointless track was laid in permafrost regions, and it was found that the overall operation of the track was in good condition during on-site operation, but the problem of uneven settlement of subgrade in permafrost subgrade sections still existed. Uneven settlement of subgrade will lead to irregularity of track surface, variation of ballast bed parameters, and high ballast bed in some sections. Under the influence of temperature change, a large rail displacement occurs. In this paper, combined with the problems of the thickness change and temperature change of CWR track bed in the frost heaving section of Qinghai-Tibet railway subgrade, the nonlinear finite element numerical analysis model program of track frame is compiled by matlab program, and the displacement change of CWR long rail under the conditions of roadbed thickness and temperature change is studied by combining with field and laboratory tests.