Some Considerations on the Liquefaction of Saturated Sand Layer

The experimental studies on the liquefaction of saturated sand layer has been developed rapidly since the Niigata Earthquake at 1964 which brought many damages to the foundations or structures, and these studies will give us some suggestions to defend the disaster of sand basement. Nevertheless these studies are not done unified because of the difference of the experimental methods and these results can not be compared each other. Therefore, each experiment of the laboratorial studies was done in our laboratory and we compared about each result. And in this time, we could recognize a few facts by additional eperiments.