... experimental investigation using 38 centrifuge tests to evaluate the performance of closely spaced pile clusters jacked into sand. Key mechanisms such as pile plugging, enhanced pile penetration resistance and installation efficiency are examined, while an optimum installation sequence is determined. A novel...

...Shao-Heng He; Zhen-Yu Yin; Zhi Ding Deep-sea mining operations now exceed water depths of 3000 m, necessitating a thorough understanding of the role of low temperature of the seabed (approximately 5°C) in sand behaviour under ultra-high hydrostatic pressure. This study presents the first systematic...

...Abouzar Sadrekarimi; Grytan Sarkar Lateral stress relief and effective stress reduction have been recognised as the culprits in flow failures of several mine tailings dams. This research examines the instability of coarse oil sand tailings (CSTs) subjected to such a stress path through a series...

... adopting only half of each anchor were carried out to study their bearing performance in sand. In addition, particle image velocimetry analyses were performed to monitor anchor movement and soil displacement. As supplementary data, numerical simulations with an advanced hypoplasticity model were also...

...Yosuke Higo; Ryunosuke Kido The hysteresis observed in a water retention curve was experimentally studied through the use of X-ray micro-computed tomography (μCT). The CT images were acquired during the main drying and wetting processes of a water retention test for uniform sand. The porosity...

...Riccardo Fanni; David Reid; Andy Fourie Results of torsional shear hollow cylinder (TSHC) tests carried out on a reconstituted sand maintaining a constant direction of major principal stress relative to the vertical axis (α) and intermediate principal stress ratio (b) during...

... installed in dry sand, which is not the case in offshore sites. To make progress, the quality and representativeness of the tests were improved in the present study by (a) using optical fibres to work on open-ended model piles while not affecting the wall thickness, (b) double checking the calculations...

... of the pile were enhanced by this installation process, at a shallow (relative) depth in sand. This paper gathers 19 centrifuge tests, with varying screw pile geometries (shaft diameter, base shape), sand relative density and advancement rates. A predictive framework for the pull-in potential of a given pile...

...Anamitra Roy; Shiao Huey Chow; Mark F. Randolph; Conleth D. O'Loughlin This paper examines the effect of consolidation on a shallowly embedded horizontal plate anchor in medium dense and dense sand using centrifuge tests, where the loading rate was varied over four orders of magnitude...

... la résistance finale des CPT. centrifuge modelling sand shear strength Cone penetration testing is an accepted means of assessing the relative density and hence peak friction angle of granular materials. Although there is a range of published correlations between the cone penetration...

...A. EZAOUI; H.DI BENEDETTO Experimental measurements have been carried out with a new, accurate, triaxial device (Triaxial StaDy) to determine the quasi-elastic properties of dry Hostun sand. The experimental investigations consist in successively applying very small axial cyclic static loadings...

...N. C. Consoli; M. D. T. Casagrande; M. R. Coop The aim of this research was to study the behaviour of polypropylene-fibre-reinforced sand under large shear strains. The experimental study consisted of ring shear tests on a sand, with and without randomly distributed fibrous reinforcement...

... foundations in sand are determined for frictional soils following an associated flow rule using finite-element limit analysis. The results of the analyses are used to propose values of the shape and depth factors for calculation of the bearing capacity of foundations in sands using the traditional bearing...

...R. B. Kelly; G. T. Houlsby; B. W. Byrne Laboratory tests applying vertical and moment loads to suction caissons founded in sand and clay have been conducted to simulate an equivalent series of field tests. The caissons used in the laboratory were 0·15 m, 0·2 m and 0·3 m in diameter, whereas those...

... record because of the variation in the proportion of energy radiated in the blast wave from one explosive and charge arrangement to another. Thus W is used at face value without regard to explosive heat content or detonation pressure. Penetration resistance of the compacted sands shows...

...A. De Nicola; M. F. Randolph A series of model pile tests have been performed in the geotechnical centrifuge at the University of Western Australia to study the behaviour of driven piles in homogeneous sand. Open, sleeved and closed-ended piles have been driven by a miniature pile driving actuator...