Design of ballasted railway track foundations under cyclic loading
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The foundations of ballasted railway tracks are usually consisted of a graded layer of granular media of ballast placed above a naturally deposited subgrade. Available methods for design of track foundations are based on determination of an adequate granular layer thickness of ballast so that subgrade shear failures and plastic deformations produced by the transmission of imposed train loads are prevented. However, the deformation of ballast itself is ignored in almost all available design methods. In addition, most available methods do not represent true cyclic loading situations and rather provide oversimplified solutions based on static loading conditions. In this paper, a method that can be used to calculate the deformation of ballast under train cyclic loading is presented. The method is deemed to complement the existing methods of design of ballasted railway track foundations.
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Sayeed, M.; Shahin, Mohamed (2018)In this paper, a new design method is developed for ballasted railway track foundations that must support high-speed trains and heavy axle loads. The proposed method is intended to prevent the two most common track failures; ...
Sayeed, M.; Shahin, Mohamed (2018)This paper is the second of two companion papers in relation to a new design method for ballasted railway track foundations. Development of the new design method has been explained in the first paper (i.e., Part I: ...
Sayeed, M.; Shahin, Mohamed (2016)Traffic congestion of highways in many countries around the world has led railways to become the most popular means of public transportation, which increased the demand for faster and heavier trains. High-speed trains and ...