포화된 사질토에서 등방재하시험에 의한 비배수 공극수압의 거동분석
Analysis of the Behavior of Undrained Pore Water Pressure in Saturated Sand by Isotropic Loading Test
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Abstract
It is known in some literatures that the B value is not equal to unity in saturated soil when effective stress is given, in which the B Value is the ratio of measured excess pore water pressure and isometric loading pressure. In this study the B value was measured on various effective stresses and on various incremental loading stresses in various grain size of specimens with saturated sand. The test results showed that the B value was affected largely by grain size of sand in specimen and the amount of effective stress. There was the semi-logarithmic relationship between B value and effective stress, and also there was the linear relationship between the gradient of the former semi-logarithmic relationship and grain size of specimen.
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