Based on the characteristics of the head checks (HCs) in curve rail of a heavy-haul railway, the design method for lower rail profile where the HCs occurred frequently by the cubic interpolation spline curve was presented. The algorithm including control points and the key control parameters in the profile, equations of the curve between adjacent control points and the boundary conditions were discussed. The control parameters was researched by applying the designed profile to a vehicle-track model for simulation of wheel-rail contact patch area and contact stress, wheel-rail lateral force and contact position in the rail. Results show that for curve radius below 800 m, the designed 75 kg/m rail profiles which lower profile from rail center to gauge side can make the acreage area of contact patch over 100 mm2 and both contact stress and lateral force smaller when the maximum lower amount of 0.1–0.6 mm, the maximum lowering position of 26–30 mm, the start point position 5–8 mm away from rail center.
Design and Analysis on Rail Anti-Head Check Profile for a Curve Rail of a Heavy-Haul Railway
Fifth International Conference on Transportation Engineering ; 2015 ; Dailan, China
ICTE 2015 ; 1245-1252
2015-09-25
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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