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STUDIES ON THE PHOTO-ELASTIC MEASUREMENT OF STRESSES IN A SOIL MASS

1959; Volume: 1959; Issue: 63 Linguagem: Inglês

10.2208/jscej1949.1959.63_66

1884-4944

Sakuro Murayama, Yoshiji NIWA, Toshikazu Kawamoto,

Climate change and permafrost

The authors studied on the applicability of photo-elastic method to the measurement of stresses in a soil mass. For this purpose, small cylindrical hollow pieces of photo-elastic material (Epoxy resin) were embedded in the dry sand mass, which was loaded by a rigid plate locally placed on its surface, and their stresses were frozen, then the stresses and their distribution in the sand mass were measured by taking out the pieces and analyzing their frozen stresses photo-elastically.As a result of the experiment above stated, it became clear that the directions of principal stress and the feature of stress distribution in the sand mass agreed well with the results calculated by Fröhlich's formula, but the measured magnitude of stress differed a little from the calculated one. But the difference in the stress magnitude can be corrected by multiplying an experimental coefficient K on the measured stress.