Abstract: This paper presents the development of a new design method for selecting granular layer thickness for railroad track. Design of an adequate granular layer thickness is intended to prevent two common railroad subgrade ...

Abstract: A new design method has been developed to determine the granular layer thickness required to prevent and remedy railroad subgrade failures caused by repeated traffic loads. The design method emphasizes the effect of repeated ...

Abstract: A method has been developed for the estimation of resilient modulus of compacted fine‐grained subgrade soils. The method takes into account the influence of soil physical state, stress state, and soil type. The effect of ...

Abstract: Improvements to existing methods in the literature have been made for predicting cumulative plastic deformation for fine-grained subgrade soils. The soil deviator stress, number of stress applications, soil physical state, ...

Abstract: Densification of granular soil during vibration was investigated using laboratory experiments. Longitudinal vibration was applied to cylindrical columns of sand. The apparatus simplified the boundary conditions of the ...

Abstract: An analytical model is derived to provide solutions for longitudinal vibration of soil columns. The model uses a Kelvin‐Voigt element in which the dynamic stresses are the sum of viscous and elastic components. Damping is ...

Abstract: The paper first summarizes the conventional approach for determining load on buried concrete pipe for embankment installations. A finite element computer method that provides a more precise and versatile approach to pipe ...

Abstract: The conventional approach for determining load on buried concrete pipe for trench installation is summarized. A finite element computer model's capabilities are demonstrated by examining cases of trench installations for ...