Oral Presentation

Volume Title: ICCE2021 Vol. 2

¹Ramy Shaltout Ramy ; ²Amr Maher ElNemr

¹Assistant professor of Railway Engineering Civil Engineering program German University in Cairo - GUC New Cairo City - Main Entrance of Al Tagamoa Al Khames, Egypt

²Assciaote Professor, Faculty of Engineering & Material Sciences, German University in Cairo, Egypt

Increasing the axle load for rail freight transportation became necessary to meet the increased demand in goods transportation and the significant progress in manufacturing. The track super-structure represents a crucial part of the structure of railway track systems. The properties of the super-structure components strongly affect the overall track structure behavior especially with increased level of stresses in case of dealing with increased axle load applications. The dynamic interaction between a freight vehicles running on a railway track is affected by the characteristics of the super-structure components which include the rails, under rail pads, sleepers, under sleeper pads and fastening elements. The present paper, presents a holistic overview of the design requirements of the railway track super-structure components needed for the design of new freight lines with increased axle loads up to 40 tons/axle. Different components’ characteristics were analyzed to ensure a safe and efficient performance of the track system. An example of numerical analysis is presented to illustrate the impact of changing the super-structure properties, on the dynamics of the railway vehicle. Recommendations for the final track specific superstructure design were presented with an appropriate justification.

Rail track; Freight transportation; Heavy Haul; Vehicle-track interaction; super-structure design

Transportation and Infrastructure Engineering