Canadian Geotechnical Journal

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Empirical modeling of the compaction curve of cohesive soils
Canadian Geotechnical Journal - Tập 38 Số 1 - Trang 29-45 - 2001
Imad A. Basheer
Compaction curves (or density–moisture relationships) of cohesive soils are essential components for establishing practical and reliable criteria for effective control of field compaction. In this paper, modules built from empirical models for simulating the compaction curves of cohesive soils based on easily measured basic soil properties and compaction energy were developed using both st...... hiện toàn bộ
Effect of variable confining pressure on cyclic behaviour of granular soil under triaxial tests
Canadian Geotechnical Journal - Tập 54 Số 6 - Trang 768-777 - 2017
Qi Sun, Yuanqiang Cai, Jian Chu, Quanyang Dong, Jun Wang
Previous studies were performed to use combined cyclic deviatoric stress and confining pressure to simulate cyclic vertical and horizontal normal stresses under traffic loading. The effect of variable confining pressure (VCP) on the permanent deformation of soils was investigated. However, some studies concluded VCP could promote the development of permanent deformation compared to the te...... hiện toàn bộ
Confining stress and static shear effects in cyclic liquefaction
Canadian Geotechnical Journal - Tập 38 Số 3 - Trang 580-591 - 2001
Y. P. Vaid, James David Stedman, S. Sivathayalan
Liquefaction resistance of a sand under cyclic loading is assessed and the effects of the levels of confining pressure and static shear on resistance to liquefaction are investigated. Site-specific values of the resistance under specified levels of confining and static shear stresses are measured in the laboratory. The measured values are compared with those which would be predicted by the...... hiện toàn bộ
Swelling and softening behaviour of La Biche shale
Canadian Geotechnical Journal - Tập 35 Số 2 - Trang 206-221 - 1998
R. V. C. Wong
Free swell, semiconfined swell, and one-dimensional oedometer swell tests were performed on La Biche shale specimens in solutions of different salinities. The swelling behaviour of La Biche shale was found to be highly anisotropic and dependent on electrolyte concentration, stress, and swelling history. Drained triaxial compression tests were conducted on La Biche shale specimens subjecte...... hiện toàn bộ
Characterization of geotechnical variability
Canadian Geotechnical Journal - Tập 36 Số 4 - Trang 612-624 - 1999
Kok‐Kwang Phoon, Fred H. Kulhawy
Geotechnical variability is a complex attribute that results from many disparate sources of uncertainties. The three primary sources of geotechnical uncertainties are inherent variability, measurement error, and transformation uncertainty. Inherent soil variability is modeled as a random field, which can be described concisely by the coefficient of variation (COV) and scale of fluctuation....... hiện toàn bộ
Effect of embedment on consolidated undrained capacity of skirted circular foundations in soft clay under planar loading
Canadian Geotechnical Journal - Tập 54 Số 2 - Trang 158-172 - 2017
Cristina Vulpe, Susan Gourvenec, Alexander F. Cornelius
The effect of foundation embedment ratio and soil–skirt interface roughness on the consolidated undrained capacity of skirted circular foundations under planar loading in normally consolidated clay has been investigated through coupled three-dimensional finite element analyses. Results are presented as failure envelopes, and changes in shape and size of the normalized vertical–horizontal–...... hiện toàn bộ
Model for the prediction of shear strength with respect to soil suction
Canadian Geotechnical Journal - Tập 33 Số 3 - Trang 379-392 - 1996
Sai K. Vanapalli, D. G. Fredlund, D E Pufahl, A W Clifton
Experimental studies on unsaturated soils are generally costly, time-consuming, and difficult to conduct. Shear strength data from the research literature suggests that there is a nonlinear increase in strength as the soil desaturates as a result of an increase in matric suction. Since the shear strength of an unsaturated soil is strongly related to the amount of water in the voids of the...... hiện toàn bộ
New methods for system reliability analysis of soil slopes
Canadian Geotechnical Journal - Tập 48 Số 7 - Trang 1138-1148 - 2011
Jie Zhang, Limin Zhang, Wilson H. Tang
A slope may have many possible slip surfaces. As sliding along any slip surface can cause slope failure, the system failure probability of a slope is different from the probability of failure along an individual slip surface. In this paper, we first suggest an efficient method for evaluating the system failure probability of a slope that considers a large number of possible slip surfaces....... hiện toàn bộ
Probabilistic slope stability analysis for practice
Canadian Geotechnical Journal - Tập 39 Số 3 - Trang 665-683 - 2002
H El-Ramly, N. R. Morgenstern, D. M. Crudën
The impact of uncertainty on the reliability of slope design and performance assessment is often significant. Conventional slope practice based on the factor of safety cannot explicitly address uncertainty, thus compromising the adequacy of projections. Probabilistic techniques are rational means to quantify and incorporate uncertainty into slope analysis and design. A spreadsheet approach...... hiện toàn bộ
Modified expression for the failure criterion of bucket foundations subjected to combined loading
Canadian Geotechnical Journal - Tập 50 Số 12 - Trang 1250-1259 - 2013
K.A. Larsen, Lars Bo Ibsen, Amin Barari
Recently, various loading tests with small- and large-scale bucket foundations were performed on buckets of varying sizes, embedment ratios, and load paths with saturated dense Aalborg University Sand No. 1 at the geotechnical laboratory of Aalborg University. In the present study, the capacity and behavior of bucket foundations subjected to combined loads were investigated on the basis o...... hiện toàn bộ
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