Comparative study of track buckling parameters of continuous welded rail

Track buckling has been considered as a major concern for Continuous Welded Rail (CWR) since the introduction of CWR on railway networks. Both static and dynamic loadings on track can cause track buckling. Track can be subjected to static loads such as tensile and compressive loads due to temperature differential, and misalignment due to maintenance operations and cumulative deflections. Dynamic parameters include vehicle loading on track under differenct speeds, Net Axle Lateral to Vertical (L/V) force ratio and bogie centre spacing. A number of research studies have been carried out to investigate the effect of different parameters of track buckling to establish a safety operating criteria. Railways around the world follow their own specific standards to safeguard against track buckling. However, all the studies differ in environment and operational characteristics. Hence unification of knowledge concerning different track buckling parameters is important. In the present study a comparative analysis of different parameters of track buckling is presented.