단순전단조건과 삼축압축조건하에서 모래의 비배수 거동 비교

초록

This study is for the effects of undrained behavior in non-silt sand which can be influenced direct simple shear condition and triaxial condition. For this, the consolidation pressure was varied into 50kPa, 100kPa, 200kPa and then direct simple shear test and triaxial test were implemented with the relative density of 40%, 70% respectively. The friction angle based on phase transformation line and failure line by monotonic loading test was increased in both conditions with relative density increased. However, the friction angle based on phase tansformation line was evaluated higher value in the simple shear test than triaxial compression test. As the results of the cyclic loading test, the cyclic stress ratio in the cyclic triaxial test was evaluated highter than one in cyclic simple shear test. And the correct coeffectient of liquefaction strength(Cr) was decreased in case of high relative density.