LABORATORY MODELING OF DEFORMATION OF SAMPLES WITH DISCONTINUITY UNDER DIRECT SHEAR IN CONSTANT NORMAL STIFFNESS CONDITIONS
a:2:{s:4:"TYPE";s:4:"TEXT";s:4:"TEXT";s:43:"O. M. Usol’tseva, P. A. Tsoi, V. N. Semenov";}
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Прочность, сдвиг, напряжение, деформация, нарушение сплошности, Strength, shear, stress, strain, discontinuity
Abstract
This study presents tests of samples with discontinuity made of artificial geomaterial (concrete-sand mixture) having triangular profile of surface roughness under shear loading with the boundary “constant normal stiffness” condition, with three values of normal compressive load: 0.5, 0.9, and 1.2 MPa. The patterns of deformation were determined at each stage of loading diagrams: linear, nonlinear, peak load and residual strength. The empirical dependences of the ultimate shear stress on normal stress were constructed for different values of roughness.
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