A new type of measures against liquefaction is being developed， which densifies ground by installing soil piles with static compaction. The by-product from construction, which is added with a small amount of cement for stabilization， is used for the soil piles. This report describes field experiment results of, 1) the new method on the densification of ground, 2)the noise and vibration generated during work, and 3)the lateral displacements of the surrounding soil.
　The main findings are:
1)The effectiveness of the new method on the densification was validated with the Standard Penetration Test(SPT). The increments of the SPT-N value were larger inside of piles and smaller between piles than those of SCP method which dynamically compacted ground.
2)The densification of the ground depended on the amount of cement added to the by-product prior to the construction of piles.
3)The vibration during the densification work was smaller than the vibration criterion of 75dB. The noise was，however, larger than the noise criterion of 85dB, but it will be able to decrease below the criterion by the minor improvement of the structure of machine.
4)The maximum lateral displacement of 4cm was measured at 1.8m from the center of a pile.