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- 82Geotechnical and Geoenvironmental Engineering Program/Journal Articles (Geotechnical & Geoenvironmental Engineering)
- 4Railway Ground Hazards Research Project (RGHRP)
- 4Railway Ground Hazards Research Project (RGHRP)/Journal Articles (RGHRP)
- 1Civil and Environmental Engineering, Department of
- 1Civil and Environmental Engineering, Department of/Research Materials (Civil & Environmental Engineering)
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Quantifying the impact of subgrade stiffness on track quality and the development of geometry defects
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Hendry, Michael T., Roghani, Alireza
This paper presents the quantification of the impact of subgrade stiffness on the prevalence of track geometry defects and degradation of track quality indices (TQIs). The data included in this study come from two high-traffic subdivisions [>50>50 million gross tonnes (MGT)/year] in Canada with a...
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1999
Robertson, P. K., Wride, C. E., McRoberts, E. C.
Abstract: When sandy soils respond in a strain-softening manner to undrained loading, an estimation of the resulting undrained shear strength (S-u) is required to determine the potential for flow liquefaction at a given site. One of the most commonly used methods for estimating the undrained...
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1995
Abstract: The Berkeley trigger criterion for evaluating the potential for earthquake-induced phenomena in sandy soils is reviewed in this paper. The historical database comprising the criterion is reconsidered using a consistent ''weakest-link-in-the-chain'' approach. Revised plots of average...
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1997
Robertson, P. K., Morgenstern, N. R., Chillarige, A. V., Christian, H.
Abstract: Liquefaction failures of loose sand deposits can be a major concern for the stability of coastal structures. an investigation to evaluate the possible contributions of different triggering mechanisms in a major liquefaction failure that occurred in 1985 at the mouth of the Main Channel...
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1992
Finn, W. D. L., Robertson, P. K., Woeller, D.
Abstract: Impressive progress has been made in the last 25 years in recognizing liquefaction hazards, understanding liquefaction phenomena, and analyzing and evaluating the potential for liquefaction at a site. Recent findings related to the application of the seismic cone penetration test (SCPT)...
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1995
Sego, D. C., Cunning, J. C., Robertson, P. K.
Abstract: Shear wave velocity (V-s) measurements were carried out in a triaxial testing program on three different cohesionless soils. The V-s was measured using bender elements during consolidation and at ultimate steady state. After consolidation the soil samples were loaded in shear under...
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1995
Robertson, P. K., Cunning, J. C., Sego, D. C., Sasitharian, S.
Abstract: The initial state of a sand, defined by the void ratio and effective mean normal stress, can be used to predict its large-strain response. Laboratory studies have shown that the shear-wave velocity of a sand is controlled primarily by the effective confining stresses and void ratio....
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2002
Merckelbach, L. M., Pyke, R., Chan, D., Znidarcic, D., Bartholomeeusen, G., Winterwerp, H., Penumadu, D., Carrier, W. D., van Kesteren, W., Masala, S., Sills, G. C., Lin, H.
Large-strain consolidation theory is widely used for the management of dredged disposal sites. The theory is universally accepted to deal with this problem, though the determination of the material properties is not yet standardised. Decisions made on this level can lead to the prediction of a...