静的3軸圧縮試験による液状化強度の予測

Usually, liquefaction strength in a sandy deposit has been estimated by performing laboratory cyclic undrained triaxial tests. By contrast, it has been widely known that static triaxial compression test are more convenient test than cyclic triaxial tests. Accordingly, detailed information is still required concerning the relationship between static strength and dynamic strength. In this paper, the comparison of strength characteristics resulting from static and dynamic triaxial tests are shown. It was found that in static triaxial compression test the shapes of strength curve in the planes of the cyclic stress ratio and the logarithm of the number of cycles are similar to the test results from cyclic triaxial test. This indicates the possibility of estimating liquefaction strength from static triaxial compression tests.departmental bulletin pape