... ABSTRACT: This paper considers the vertical bearing behaviour of shallow foundations and piles driven at clay, chalk and sand sites. It emphasises the strengths, when studying complex problems and natural geomaterials, of combining field experiments and full-scale monitoring with high quality...

... be measured for example through a downhole seismic cone penetration test equipped with a resistivity module (Campanella and Weemees, 1990). 2 Experimental method 2.1 Soil chamber A series of experiments were carried out in this study on sand specimens in a large custom-built cylindrical acrylic chamber...

... has been reported to significantly reduce the shear strengths of the host soils. In order to investigate the effect of enclosed gas bubbles on the mechanical behaviour of soils, a triaxial set-up and experimental procedure was designed based on the axis-translation technique for gassy soils...

... (CEL) method in the software package Abaqus is used to simulate the experiments. This 2D model does not represent the pile buckling phenomenon directly but provides a benchmark for a numerical modelling procedure. The consistency of results between the physical modelling and the 2D numerical modelling...

... instrumented calibration chamber experiments involving closed-ended piles. Comparisons between the simulations and experimental results indicate that the approach offers a promising and efficient tool for dealing with pile penetration problems. 1 Introduction Displacement piles are widely used...

... in Figure 3, to DEM triaxial compression simulations that compared well with experiments by Seif El Dine et al. (2010). The calculated peak and critical state angles of 36° and 32.5° match the experimental values well for the target Dr= 72%. 980 100 10 times of Yang et al. (2010) Present study 80...

... of stress paths and stress-strain curves to demonstrate the satisfactory agreement between model predictions and experimental data. Comparisons are made for different types of experiments from the Karlsruhe sand database and at different stress and relative density levels. Figure 5 is an example...

... precipitation (Mortensen et al. 2011). However, the limitation of calcium ion concentration in seawater has been a challenge, requiring samples to be washed numerous times before reaching adequate compressive strength (Cheng et al. 2014). Additionally, experiments using sand columns have revealed that higher...

... experimental data used in the validation (Table 2). (a) (a) (b) Figure 4. Experiment C0.4-0.1 and simulation responses: (a) dimensionless stiffness; (b) normalised displacement The constant trend of with increasing number of cycles (Ncycles), indicating the transition from sand ratcheting to shakedown...

... uncertainties remain, however, regarding driveability prediction and post installation lateral stiffness. This paper presents preliminary results of a combined experimental and numerical investigation into these aspects. Vibro-installation and post-installation performance under lateral loading has been...

... in 320m water. Briaud and Fe- lio (1986) assembled for API a database intended to resemble fine marine sediments covering the cyclic behaviour of clays in: laboratory tests, cyclic model experiments and axially cyclic field pile tests. They considered 16 studies on piles with diameters greater than 150mm...

... rising gas in terms of sources, pathways, flow calculations, gas experiments trials, and calculations, settlement effects and precautions, as well as its effect on GBS, on bearing capacity (especially during storms) and on shallow and deep foundations. 1. Sources of Gases The most obvious sources...

... coefficient anchor tip resistance coefficient deployment houston experiment penetration depth upstream oil & gas fluid drag coefficient cpt interface seafloor completion installation and operations cpt data cpt rig side adhesion factor penetrator resistance free-fall cpt 1...

... of Submarine Landslide Flows 3.1 Centrifuge model and apparatus The mini-drum centrifuge at the University of Cam- bridge was used for the experiments due to its flexi- bility that allows materials to move freely within the circular channel. Figure 1a shows the experimental setup in the mini-drum centrifuge...

... and the associated area), all of which are acting against the movement of the iceberg model. 574 2. Experimental Setup 2.1 Test samples Laboratory experiments were undertaken where the behaviour of samples of different shapes were examined for both free and fixed penetration. The dimensions of the samples were B...

... tests were carried out in 2005 as collaboration between Statoil, the Norwegian University of Science and Technology (NTNU) and SINTEF Building and Infrastructure. Comparable experiments have previously been conducted, amongst others, by Takada3, Johnson et al.4 and Boudreau et al.5, who studied...