Geotechnical
Liquefied Strength and Its Relationship to Effective Stress
Authour(s) Robb Eric S. Moss, Ph.D., P.E., F.ASCE Abstract The residual strength of liquefied soil (su,r) is a large-strain strength variable often used for forecasting the seismic stability of dams, embankments, and mine tailings. This variable is usually arrived...
Numerical Simulation of the Effect of High Confining Pressure on Drainage Behavior of Liquefiable Clean Sand
Author(s) W. El-Sekelly, M.ASCE; R. Dobry, M.ASCE; T. Abdoun, M.ASCE; and M. Ni, S.M.ASCE Abstract This article presents numerical simulations investigating pore pressure buildup of a sand layer with a free drainage boundary at the top under both low and high...
Contaminant Diffusion through a Novel Coextruded Vapor Barrier
Author(s) V. DiBattista and R. Kerry Rowe, Dist.M.ASCE Abstract Organic contaminant diffusion through a novel multilayer coextruded vapor barrier is examined for benzene, toluene, ethylbenzene, xylenes (BTEX), trichloroethylene (TCE), and tetrachloroethylene (PCE)....
No AccessAnalysing the Effect of Principal Stress Rotation on Railway Tack Settlement by Discrete Element Method
Author(s) Xuecheng Bian* Wei Li* Yu Qian† Erol Tutumluer‡ Abstract Principal stress rotation induced by moving loads from trains significantly influences railway track settlement accumulation. The stationary cyclic loading commonly adopted to study railway ballast...
Behaviour of Discrete Piles used to Stabilise a Free-covered Railway Embankment
Author(s) Joel A. Smethurst* Nicola Bicocchi† William Powrie* Anthony S. O'Brien‡ Abstract Many clay railway embankments in the UK are well over 100 years old, and now suffer from a range of stability and serviceability problems. A common means of remediating...
Mathematical Modelling of the Mechanical Response of Earth Embankments on Piled Foundations
Author(s) Claudio di Prisco* Luca Flessati† Gabriele Frigerio* Andrea Galli* Abstract Piled foundations are largely employed as settlement reducers in the design of artificial embankments on soft soil strata. The commonly employed design methods are, however, based...
Glass-fibre-reinforced polymer: The Low Carbon Dioxide Option for Permanent Rock Bolts
Author(s) Alun H. Thomas, BA, PhD, CEng, MICE Abstract Traditionally steel has been used for rock bolts in tunnelling. Faced with the challenge of reducing mankind's environmental impact, it is necessary to look at using better alternatives. Glass-fibre-reinforced...
Simplified Numerical Method to Simulate the Thawing of Frozen Soil
Author(s) Marianna Loli, PhD Angelos Tsatsis, PhD Rallis Kourkoulis, PhD Ioannis Anastasopoulos Abstract Thawing weakens the frozen soil supporting buildings and lifelines from Siberia to Alaska, resulting in settlements up to hundreds of millimetres during a single...
Sample Disturbances Due to Removal of Confining Pressure in Laminated Clay
Author(s) Laura Moore, MEng Pratiksha Pandey, BTech, PhD Vinayagamoorthy Sivakumar, BSc, MSc, DIC, PhD, CEng, Abstract Sample disturbances in laminated soils may be caused by several factors, including water movement between the clay and sand layers upon removal of...