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Scaling Effects in Direct Shear Tests
AIP Conference Proceedings, 2009Laboratory experiments of the direct shear test were performed on spherical particles of different materials and diameters. Results of the bulk friction vs. non‐dimensional shear displacement are presented as a function of the non‐dimensional particle diameter. Simulations of the direct shear test were performed using the Discrete Element Method (DEM).
Andrés D. Orlando +4 more
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On the interface friction in direct shear test
Computers and Geotechnics, 2005Abstract Distinct element simulations for the direct shear box tests on a dense and a loose 2D sample of a mixture of binary diameter cylinders were performed. Special attention is focused on the friction between the internal surface of the shear box and the sample.
Liu, S. H., Sun, De'an, Matsuoka, H.
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Géotechnique, 1989
Experimental data from unreinforced direct shear tests on sand are presented to show the influence of the boundary conditions on the test measurements. The data and the theoretical considerations of the loading in the test show that a symmetrical direct shear test arrangement is preferable.
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Experimental data from unreinforced direct shear tests on sand are presented to show the influence of the boundary conditions on the test measurements. The data and the theoretical considerations of the loading in the test show that a symmetrical direct shear test arrangement is preferable.
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Scale dependence of direct shear tests
Science Bulletin, 2009Direct shear test has been widely used to measure the shear strength of soils and other particulate materials in industry because of its simplicity. However, the results can be dependent on the specimen size. The ASTM (American Society for Testing and Materials) publications suggest that for testing soils the shear box should be at least ten times the ...
Hayley H. Shen +4 more
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Direct shear tests on reinforced sand
Géotechnique, 1987New data are presented from internal measurements in direct shear tests on sand. An interpretation is given for the plane strain angle of friction and the angle of dilation of sand in a direct shear test. The direct shear angle of friction deduced from the conventional analysis is shown to under-estimate the frictional shearing resistance of sand by ...
C. P. Wroth, R. A. Jewell
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Direct Shear Testing of Rockfill Material
Soil and Rock Behavior and Modeling, 2006The shear strength of granular materials is mainly derived from the particle sliding friction and resistance resulting from reorientation and sample dilatancy. Parameters affecting the shear strength therefore depend on the relative density, gradation, particle strength, particle size and shape, and degree of saturation of the specimen. In this study a
Shunying Ji, Kerop D. Janoyan, Xinbao Yu
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Development of a New Direct Shear Testing Apparatus
Rock Mechanics and Rock Engineering, 2009Politecnico di Torino and G.D.S. Instruments Ltd, UK has developed an innovative servo controlled direct shear apparatus named High Pressure Back Pressure Shear Apparatus-HPBPSA. The apparatus allows direct shear tests to be performed under closely controlled conditions in terms of axial load and back pressure applied to the specimen.
BARLA, Giovanni Battista +2 more
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Simple shear tests with a varying shearing direction during cyclic shearing
Géotechnique Letters, 2014Tests with cyclic lateral loading on a pile have shown that the pile reacts to a change of loading direction with increasing accumulation of lateral displacements. This phenomenon is known as ‘pile drift’. To investigate this behaviour at small scale under laboratory conditions, a specifically designed simple shear apparatus with two shearing axes was
Jürgen Grabe +2 more
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Shear Strength of an Accumulation Soil from Direct Shear Test
Marine Georesources & Geotechnology, 2014The present study focuses on the shear strength of the loose accumulation soil induced by the 2008 Sichuan earthquake. A series of direct shear box tests was performed to characterize the shear strength of the accumulation soil, under drained conditions.
Yue Liang +3 more
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The Improved Shear Strength Calculation Method in Direct Shear Test
Applied Mechanics and Materials, 2013Direct shear test is broadly used to get the strength of soil, joints, and specific material in the field of geotechnical engineering because its simple structure and easier operation. But the current direct shear strength calculation does not concern on the variation of the shearing surface during the test, has no regard for the effects of the ...
Wei Wang +3 more
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