Ballast Railroad Design: SMART-UOW Approach [Paperback]

1 Introduction
2 Parameters for track design
3 Bearing capacity of ballasted tracks
4 Thickness of granular layer
5 Effect of confining pressure and frequency on ballast breakage
6 Impact of ballast fouling on rail tracks
7 Application of geosynthetics in railway tracks
8 UOW  constitutive model for ballast
9 Sub-ballast and filtration layer  design procedure
10 Practical design examples
11 Appendix A: Introduction of SMART tool for track design
12 Appendix B: Unique geotechnical and rail testing equipment at the University of Wollongong

The rail network plays an essential role in transport infrastructure worldwide. A ballasted track is commonly used for several reasons, including economic considerations, load bearing capacity, rapid drainage and ease of maintenance. Given the ever-increasing demand for trains to carry heavier axle loads at greater speeds, traditional design and construction must undergo inevitable changes for sustainable performance. Ballast is an unbounded granular assembly that displaces when subjected to repeated train loading affecting track stability. During heavy haul operations, ballast progressively deteriorates and the infiltration of fluidized fines (mud pumping) from the underlying substructure and subgrade decreases its shear strength and also impedes drainage, while increasing track deformation and associated maintenance.

Features:

• serves as a useful guide to assist the practitioner in new track design as well as remediating existing tracks.



• research discussed in this book has made considerable impact on the railway industry.



• resulting from collaborative research between academia and industry, incorporating sophistil#$