Auteur W. Powrie
Documents disponibles écrits par cet auteur (6)
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Article : texte imprimé
J. A. Priest, Auteur ; W. Powrie, Auteur |The measurement of track stiffness, or track modulus, is an important parameter for assessing the condition of a railway track. This paper describes a method by which the dynamic track modulus can be determined from the dynamic displacements of [...]
Article : texte imprimé
L. A. Yang, Auteur ; W. Powrie, Auteur ; J. A. Priest, Auteur |Scientific design of a railway track formation requires an understanding of the subgrade behavior and the factors affecting it. These include the effective resilient stiffness during train passage, which is likely to depend on the stress history[...]
Article : texte imprimé
W. Powrie, Auteur ; T. O. L. Roberts, Auteur ; H. E. D. Moghazy, Auteur |
Article : texte imprimé
J.A. Smethurst, Auteur ; D. Clarke, Auteur ; W. Powrie, Auteur |Seasonal cycles of soil water content cause shrinking and swelling in clay soils, which can in turn contribute to strain-softening and progressive slope failure. This paper presents and analyses six years of field measurements of soil water cont[...]
Article : texte imprimé
M. A. Bevan, Auteur ; W. Powrie, Auteur ; T. O. L. Roberts, Auteur |Large-scale anisotropy and inhomogeneities resulting from the presence of fissures, fractures and high-permeability zones can have a major impact on local groundwater flows, and affect significantly the performance of a construction dewatering s[...]
Article : texte imprimé
J. A. Priest, Auteur ; W. Powrie, Auteur ; L. Yang, Auteur |This paper presents the results of a detailed investigation into the ground deformations that occur under a railway line during the passage of a train. Four horizontal boreholes were installed at different depths below a ballasted railway track.[...]
