Geotechnical
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...
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...
No Access Effect of Soil Models on the Prediction of Tunnelling-induced Deformations of Structures
Author(s) Giorgia Giardina, MSc, PhD Nunzio Losacco, MSc, PhD Matthew J. DeJong, MSc, PhD Giulia M. B. Viggiani, PhD Robert J. Mair, MA, PhD, CBE, FREng, FICE, FRS Abstract Computational modelling of the effect of underground excavations on adjacent structures...
Insights into the Transport and Fragmentation Characteristics of Earthquake-Induced Rock Avalanche: Numerical Study
Aouthor(s) Ge Gao ; Mohamed A. Meguid, Ph.D., M.ASCE ; Luc E. Chouinard, Sc.D. ; and Chong Xu, Ph.D Abstract The earthquake-induced rock avalanche in the Tangjia Valley was the most notable geological disaster triggered by the Lushan earthquake in 2013. In...
Finite-Element Study for Seismic Structural and Global Stability of Cantilever-Type Retaining Walls
Aouthor(s) Junied Bakr; Syed Mohd Ahmad; and omenico Lombardi Abstract This paper investigates the structural and global stability of a cantilever-type retaining wall under seismic loading using numerical modelling. A new and robust approach is proposed to...
Yao Li, S.M.ASCE; Yunming Yang; Hai-Sui Yu, M.ASCE; and Gethin Roberts
Aouthor(s) Yao Li, S.M.ASCE; Yunming Yang; Hai-Sui Yu, M.ASCE; and Gethin Roberts Abstract Stress–strain responses of Leighton Buzzard sand are investigated under bidirectional shear. The tests are conducted by using the variable direction dynamic cyclic simple...
Structural Analysis for Shallow Tunnels in Soft Soils
Aouthor(s) Minh Ngan Vu; Wout Broere; and Johan W. Bosch Abstract Generally, studies on structural design for bored tunnels focus on moderate to deep tunnels (cover-to-diameter ratio C/D ≥ 2). Such tunnel design methods cannot be used for shallow-situated bored...
Coupling Elasto-plastic Behaviour of Unsaturated Soils with Piecewise Linear Large-strain Consolidation
Authors: Shunchao Qi* Paul Simms† Farzad Daliri‡ Sai Vanapalli§ Abstract Slurried soils or tailings are often deposited in layers that undergo complex stress paths in terms of desiccation and loading, as a given layer may undergo variable degrees of desiccation...
Load-controlled Cyclic T-bar Tests: A New Method to Assess Effects of and Consolidation
Authors: C. D. O'Loughlin* Z. Zhou† S. A. Stanier‡ D. J. White§ Abstract Full-flow T-bar and ball penetrometer tests are often used to measure intact and remoulded soil strengths, with the latter determined after several large-amplitude displacement cycles. In...