Showing papers in "Soils and Foundations in 1993"

TL;DR: In this article, the experimental data on dynamic shear moduli and damping ratios of various soils including non-plastic sands to highly plastic clays are collected and reanalyzed and brought into simple unified formulas.

TL;DR: In this paper, several theoretical aspects for preparation of constitutive equations of unsaturated soils are discussed and the suction effects can be classified into two categories: the first is that an increase in suction induces an increase of effective stresses and the other is the increase in both yield stress and the stiffness of the soil skeleton against plastic deformations.

TL;DR: In this paper, a coventional consolidometer equipped with a heater and a thermostat was employed for a study on the interaction between clay particles and pore water and the volume change of clays induced by elevated temperature.

TL;DR: In this article, a series of plane-strain biaxial compression tests on dry coarse sand is described in which the state of shearband formation, shear band orientation, and shear-band growth are investigated.

TL;DR: In this article, an alternative approach using interaction diagrams to relate the different loading components at failure has been proposed, which can be obtained experimentally as the failure envelope of a series of load tests, and all the planar interaction diagrams appear to be loadpath independent and therefore provide a rational way of studying the load capacity of such footings.

TL;DR: In this article, a model for highly nonlinear shear stress-strain relations in plane strain compression of a fine sand, which has been used extensively in a large number of model tests by many researchers, is attempted taking into account the effects of many major factors; (1) void ratio, (2) confining pressure σ3, (3) the initial and maximum shear modulus Gmax as observed at strains less than about 0.001%, (4) anisotropic strength and deformation characteristics, strain softening associated with strain localization into a she

TL;DR: In this article, the maximum resistance of friction between Kawasaki clay and mild steel was measured by using two types of direct shear test apparatuses, namely, simple shear type and shear box type.

TL;DR: In this paper, the progressive failure and scale effect of trapdoor problems were evaluated, by comparing experimental results with finite element analyses employing the elasto-plastic model including the shear band effect.

TL;DR: In this article, an elastoplastic constitutive model for the deformation of sand during loadings involving rotation of principal stress directions is presented, which employs a plastic potential formulation that allows for the dependency of flow on the stress increment direction and a stress-dilatancy relation that incorporates the effects of the noncoaxiality of the principal stress and principal plastic strain increment directions.

TL;DR: In this article, the friction between cohesive soils and mild steel was carried out using a direct simple shear type of test apparatus, where cohesive soils were normally consolidated Kawasaki clay and four kinds of normally consolidated sand-clay mixtures.

TL;DR: In this paper, a more general version elastoplastic model with these two suction effects is proposed, and the schematic estimations of volume change behavior of unsaturated soils were performed using this model.

TL;DR: In this article, the horizontal coefficient of permeability measured in situ from around a plastic board drain indicated three distinct zones, viz., an inner smear zone consisting of highly remolded soil, an outer transition zone, and soil unaffected by the drain installation.

TL;DR: In this paper, the authors examined the ground damage caused by widespread occurrence of liquefaction at the time of the 1990 Luzon, Philippines earthquake by examining the geomorphological regime and boring data obtained in the city area of Dagupan.

TL;DR: In this article, the behavior of cohesionless soil around rigid plane ribbed inclusions during shear was investigated and the experimental program included monitoring individual sand grain movements during plane strain shearing and mapping of zones of dilation, contraction and maximum shear strain.

TL;DR: In this paper, a finite element analysis was conducted on the field performance of two quay walls during an earthquake, and the results of the analysis were basically consistent with the observed performance of the quay wall.

TL;DR: In this article, the authors compared the results of the dry and conventional wet setting methods for triaxial testing of in situ and reconstituted specimens of kaolin and an in-situ clay.

TL;DR: In this paper, a series of tests performed on uncemented and cemented sands along conventional and unconventional stress paths using a true (or cubical) triaxial testing device were planned such that the influence of cementation on constitutive behavior of sands could be comprehended.

TL;DR: In this paper, the authors demonstrate the effective utilization of stainless-steel slag as ground materials by solidification and show that carbonated-aluminate salt stabilizers can be used effectively in stabilizing this slag.

TL;DR: In this paper, the finite element method has been used to analyze two geogrid reinforced embankments on Muar clay deposit in Malaysia, one with a berm and the other without berm.

TL;DR: In this article, the effect of weakness planes in the rock mass on pile capacity was examined by comparing the results obtained from the centrifuge model test results with those obtained from conventional small-scale models.

TL;DR: In this article, eight joint geometry modelling schemes are suggested and applied to a set of Stripa mine joint data to build three-dimensional joint networks to a granitic rock mass.

TL;DR: In this article, the authors present simple equations using which the location of the critical slip circle and the minimum factor of safety can be calculated directly for a given limiting tangent, and the optimum dimensions of the berms also can be chosen.

TL;DR: In this paper, a series of cyclic undrained triaxial and torsional shear tests was performed on three kinds of sands made by three different sample preparation methods.

TL;DR: In this article, a theoretical approach for the interpretation of crack growth in earth dams is presented, based on Linear Elastic Fracture Mechanics theory, considering not only the water pressures and normal stresses acting on the cracks but the effect of any shear stresses as well.

TL;DR: In this paper, high-quality undisturbed gravel samples were obtained by the in-situ freezing method at four sites and measured by using a large scale triaxial test apparatus.

TL;DR: In this paper, laboratory tests were conducted on Toyoura sand and the sand mixed with two kinds of fine sand to investigate the disturbance caused by a freeze and thaw cycle.

TL;DR: A theoretical backup for the strain space multiple mechanism model of cyclic behavior of sand presented by the author and his colleagues (Iai et at, 1992) is offered in this article, by superposing the plane strain mechanisms around axes of arbitrary orientations.

TL;DR: In this paper, the authors analyzed data obtained from field observations during the construction for expanding the Tokyo International Airport and proposed a new stability number, Nt, for braced excavations stabilized by the DM method.

TL;DR: In this paper, a large scale drag device was fabricated to study the primary variables such as sand density, pipe diameter, pipe burial depth and relative velocity on the pipe lateral soil restraint.

TL;DR: In this paper, a series of direct shear tests between a granular material specimen and a lubrication layer was performed to find the proper composition of a layer of silicone grease and a latex rubber disk, and its variations.