SOME FACTORS AFFECTING K_0-VALUES OF SAND MEASURED IN TRIAXIAL CELL

概要

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A series of K_0-consolidation tests on reconstituted sand specimens was performed to evaluate the effects of several stress or strain factors on K_0-values. A double-cell triaxial apparatus was used to investigate the effects of (1) unpreferable variation in the radial strain during K_0-consolidation, (2) the different initial stress condition from which K_0-consolidation is started, (3) pre-shearing in the triaxial compression or extension stress condition and (4) the different sample preparation methods. A double-cell torsional shear apparatus was also used to evaluate the effects of torsional pre-shearing on K_0-values. It was found that in order to obtain reasonably accurate K_0-values of sand samples, the variations in radial strain induced both before and during K_0-consolidation should be limited to a rather small value. It was also found that the effects of torsional preshearing on the K_0-values were rather small as far as these torsional shearings induce small values of radial strain.
社団法人地盤工学会の論文
1984-09-15