Abstract
The authors have proposed a method to predict the SPT N-value between piles by the sand compaction pile method. It is, however, found that the method tends not to predict large SPT N-values because the effect of the increase in K0-values due to the compaction is not considered. In this study the effect of the K0-value on the SPT N-value is taken into consideration to modify the prediction method. The modified method is examined with observed SPT N-values and a conventional prediction method called A-method. It is found that the modified method has higher accuracy than the original.
