| Change in Undrained Shear Strength of Saturated Clay Due to Rebound (9999) | |||||||||
Abstract | |||||||||
| In order to examine the possibility of applying phi = 0 analysis of stability to the long term type problem, a series of triaxial compression tests is carried out on normally- and over-consolidated clay specimens. Consolidation or rebound prior to shear process is carried out either under isotropic pressure or under K sub o condition. The test result shows that the decrease in undrained shear strength due to rebound is uniquely related with the overconsolidation ratio OCR, and the relationship between the ratio of undrained shear strengths, before and after rebound, and the OCR in terms of mean principal pressure is independent of the difference in stress condition prior to the shear process. In a case record of unloading in natural ground, the observed strength reduction compared favourably with the result of laboratory shear tests. (AA) | |||||||||
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