EVALUATION OF A CONSTITUTIVE MODEL FOR SOFT CLAY USING THE CENTRIFUGE
Robert Y. K. Liang, Edward C. Tse, Matthew R. Kuhn, J K Mitchell · eScholarship (California Digital Library) · 1984
A general constitutive model has been formulated which may provide a r rational method for prediction of the time-dependent performance of embankments on soft clay foundations, with due consideration for creep effects during the undrained, consolidation, and fully drained stages.Tests on embankment type soil structures are being performed on the U.C. Davis Schaevitz Centrifuge to I • measure the time-dependent pore pressure and deformation behavior for comparison with predictions made using the constitutive model.This paper inlcudes descriptions of the building, testing, and monitoring of the l centrifuge models.The results of the centrifuge tests are compared with I predictions made using a simplified form of the constitutive model.Centrifuge testing is valuable for investigating the accuracy and I usefulness of new soil behavior models, particularly in the absence of or as a I supplement to detailed field records.The unique conditions imposed by the centrifugal environment, such as stress history, stress path, geometry, and curved "gravity" field can be properly accounted for in numerical analyses .Further, careful model preparation minimizes the uncertainty concerning the I value and spatial variation of soil properties.I