... migration and build-up of internal pore water pressure) of uncompacted railway embankments under different train loading conditions. A mixed finite-element approach based on the complete solid displacement, fluid displacement and pore pressure ( u – w –p_w) formulation...

... partial saturation pore pressure poroelasticity Both components of the interparticle attractive stress are non-linear decay functions of the internal water film thickness, as stated in equations (4) and (5) . Their variation with macroscale variables like water content can be achieved...

... as (Chen & Abousleiman, 2022) 06 03 2022 25 10 2022 © 2022 Thomas Telford Ltd 2022 plasticity pore pressure strain stress path theoretical analysis Analysis of the expansion and contraction of cylindrical or spherical cavities in elastic–plastic soils has been...

... pressure and pore pressure can be equally conveniently evaluated, through basic numerical integrations with respect to the mean effective stress. Some ambiguity is clarified between the generalised (work conjugacy-based) shear strain increments and the corresponding deviatoric invariants of incremental...

.... Failure then spreads to adjacent regions as a result of momentum exchange. Liquefaction is contingent on pore-pressure feedback that depends on the initial soil state. The importance of this feedback is illustrated by using the model to study the dynamics of a disastrous landslide that occurred near Oso...

... transducers (TPT1 and TPT2) and three pore pressure transducers (PPT0, PPT1 and PPT2, see Fig. 1 for configuration). Under undrained behaviour, both transducers monitor changes in the pore pressure at the foundation invert. The axial load was monitored by a 2 kN load cell located on the top...

... or more pore pressure transducers (piezoball) is of special interest as it can provide information on the soil consolidation properties by means of dissipation tests. Although analytical and numerical solutions have been developed to evaluate the undrained resistance factor for the ball, the absence...

...C.S. EL MOHTAR; A. BOBET; V.P. DRNEVICH; C.T. JOHNSTON; M.C. SANTAGATA The paper examines the effect of small percentages of bentonite on pore pressure generation in loose sands, from small strains all the way to liquefaction. It relies on resonant column, static triaxial and cyclic triaxial tests...

..., the formulation of the problem is reduced to solving a system of first-order ordinary differential equations for the radial, tangential and vertical effective stresses in the plastic zone. The pore pressure distribution can subsequently be determined from the radial equilibrium equation in terms of the total...

... numerical modelling plasticity pore pressure slopes or (5) u ̈ α i = ∑ j = 1 N   m j ( σ ′ i α β ρ i 2 + σ ′ j α β ρ j 2 + C i j α β ) ∂ W i j ∂ x...

... and easy method to evaluate the residual pore water pressure on the lining. groundwater numerical modelling pore pressure tunnels One of the main issues in tunnel maintenance is the hydraulic deterioration of the drainage system. In tunnels acting as drains, hydraulic deterioration...

... was found to be a deep circle, shown in Fig. 2 . A safety factor F = 1·30 computed for this circle was deemed to be acceptable because it was higher than the recommendation (F = 1·2) of the seismic code applied. clays dams plasticity pore pressure The failure...

... shearing may also cause degradation of the asperities and mixing of gouge with the clay infill. The resulting pore pressures and volume changes of the mixed infill are often difficult to interpret. When σ′₃ increases from 200 kPa to 500 kPa, for t/a = 1·0, the axial strain at which...

...J. Yang 11 07 2003 13 10 2003 © 2004 Thomas Telford Ltd 2004 dynamics earthquakes liquefaction partial saturation pore pressure Ground motion induced by an earthquake is in general characterised by a vector with its components along the vertical and two...

... in the form of negative pore pressure has to be done to withdraw the pore water, which is held in place by the physical (matric) and chemical (osmotic) potential difference between the inside and outside of the pore space. The sum of these potential differences is termed the total soil suction...

... respectively. It is evident that, as the degree of saturation is reduced, the excess pore pressure developed decreases rapidly, and the response tends towards that corresponding to drained conditions. In the test carried out on the specimen with a degree of saturation of 0·96%, the response is similar...

..., x, 0, y Lewis & Humpheson (1973) gave the equations of two-dimensional consolidation as follows: 06 03 2003 09 06 2003 © 2003 Thomas Telford Ltd 2003 pore pressure consolidation Studies on the application of electro-osmosis in ground...

... permeability pore pressure stiffness theoretical analysis In order to determine the consolidation characteristics of a clay soil, the oedometer test is commonly performed to determine the one-dimensional consolidation characteristics of the material. Although the linear elastic Terzaghi...

... of water, or there may be discontinuous and occluded air bubbles present in the water. Pore pressures at depths below the water table are derived from a combination of the weight of the water lying above the given elevation and the drainage conditions below. The pore pressure normally has a positive value...

... stresses and pore pressures. This general and more comprehensive expression is then tested against the experimental evidence. The expression may be specialized for (a) granular materials with separate grains with contact points and (b) solid rock with interconnected pores. The new expression...