In the curved track, the contribution of dynamic wheel load on the low and high rail was fluctuated by cant deviation according to various vehicle speed.
The dynamic wheel load fluctuation could be affected on the deterioration and damage for track ...
In the curved track, the contribution of dynamic wheel load on the low and high rail was fluctuated by cant deviation according to various vehicle speed.
The dynamic wheel load fluctuation could be affected on the deterioration and damage for track components of rail joint. In this study, the measured track impact factor of each test section(two continuous welded rail on slab tracks and rail joint on ballasted track) was compared with the design track impact factor under serviced conditions of the curved light rail transit.
The measured track impact factor was estimated from the measured dynamic wheel load and vertical rail displacement at each test section. In the case of the rail joint section, the rail joint was found to directly affect the track impact factor which was calculated by using dynamic wheel load and vertical rail displacement. Moreover, the dynamic wheel load fluctuation and vertical rail displacement were found to be significantly greater than those of continuous welded rail on slab track. Therefore, the rail joint could amplify the dynamic wheel load and vertical rail displacement, and it could be occurred the deterioration of track components on the rail joint track.