...G. Hawwa; J. de Sauvage; P. Joffrin; J.-P. Rajot; Y. Fargier Nails have been widely used to stabilise slopes and embankments. The stability is ensured by the friction created along the interface between these inclusions and the ground surrounding, which is quantified by means of pull-out tests...

...G. de Lima Sonaglio; G. M. A. do Patrocínio; L. Festugato; M. B. Corte Shaft friction degradation in geotechnical problems occurs alongside large uncertainties. Under cyclic loadings, offshore foundations can episodically suffer the loss of stiffness and strength. In such cases, initial in situ...

...C. P. Y. Wong; M. R. Coop A detailed experimental programme investigated how the coefficient of friction at particle contacts for a typical UK railway ballast varied during cyclic loading. Despite a decrease of roughness, the friction coefficient increased steadily, stabilising in the region...

... sphericity. As the AR of particulates increases, the extreme void ratios and packing index decrease. The shearing friction angles at the critical state decrease as the sphericity of grains increases and the intercept void ratios become smaller. The drained peak friction angles and maximum friction angles...

... that the texturing pattern of the steel counterface significantly affects the shear strength of the sand–steel interface. The peak and residual interface friction angles for the sand–steel interfaces with different texturing patterns (with identical asperity height and spacing) varied from 26·6° to 37·5° and 14·2...

.... It was observed from these tests that the peak-state and critical-state friction angles increased with increasing the fines content. The peak-state friction angle and maximum dilatancy angle increased with decreasing the confining pressure. It was also found that the relationship between the excess friction angle...

... reserved 2016 clays friction shear strength stiffness Scaly clays are natural materials characterised by an intensely fissured mesostructure, which originate from different geological processes, such as tectonic deformations, bulk shearing, submarine gravity sliding, often more recently...

... is a miniature driven pile and this technique permits the monitoring of degradation of sleeve friction and pore pressure development during cyclic loading. It was found that while consistent degradation of measured sleeve friction takes place within a few cycles, this was not associated with an observed pore...

.... 16 03 2014 30 04 2014 08 07 2014 ICE Publishing: all rights reserved 2014 finite-element modelling friction piles temperature effects theoretical analysis The operation of heat exchanger piles creates differential temperatures between the pile and the soil around...

... plywood base that was longer than the top part of shear box so that the shear area remained constant during a test. To minimise friction between the sand and the soil box, the inside of the walls was coated with a thin film of grease. Furthermore, the thickness of the shear box wall at the interface...

... compressive stress and number of loading events. Of the samples tested, surfaces subjected to an increased number of loading events exhibited the most significant surface deformation and were observed to exhibit higher levels of static friction at an interface with a single-crystal flat quartz substrate...

...·05 and 0·70 N/μm, depending primarily on the normal load and the displacement at which the initial stiffness was evaluated. 22 2 2013 20 04 2013 15 5 2013 ICE Publishing: all rights reserved 2013 discrete-element modelling friction laboratory tests particle-scale...

... simulate cyclic deformation and critical state behaviour. compaction constitutive relations friction numerical modelling plasticity sands 14 5 2012 14 6 2012 21 8 2012 ICE Publishing: all rights reserved 2012 6 e ˙ R = ν i ( d ˙ m n R...

...H. M. ABUEL-NAGA; M. HOLTRIGTER; M. J. PENDER This letter presents a simple method for evaluating the effect of rod skin friction on dynamic cone penetration test results in cohesive soils. The proposed method is simple and requires neither additional equipment nor special test procedures, and thus...

... for different chute angles that are in good agreement with the experiments if the particle coefficient of friction is chosen correctly. The interparticle coefficient of friction was chosen so as to achieve the same angle of repose in the DEM as in the laboratory for the real pebbles. The use of spheres, however...