Abstract
The authors examine an anti-liquefaction measure method of construction to make the ground unsaturation positively. About the liquefaction strength of partially saturated sand, some study examples are examined, but there is no such precedent that the examination that paid its attention to the study that authors used a non-disturbance sample of the true ground for and the disorder of the sample was still carried out. Therefore, in this study, authors sampled disturbance and non-disturbance sample from the ground which became a liquefaction object and authors adjusted test body color saturation by the pressure plate method which triggered the air pressure of the slight low pressure and repeated it and carried out a triaxiality examination and examined a difference of the liquefaction strength increase by the difference of the sample. In addition, for the ground of heterogeneous color saturation distribution, authors examined the effectiveness of the unsaturation by the gravitational field vibration level experiment that used shear box shaking table tests. As a result, authors understood that outbreak of the liquefaction was restrained by making the ground the state that was unsaturation without affecting uniformity of the color saturation.
