| 摘要 |
PURPOSE:To prevent the cracking and subsidence of the ground by relieving the driving resistance of a pile by driving and drawing a pile having a sheet having a surface activity to soil on its side face. CONSTITUTION:A pile 1 is driven into the center of a sheet 5 laid on the ground. Thereby, the pile 1 can be effectively driven into even highly cohesive soil due to the presence of the sheet 5 having surface activity to the soil because the driving resistance by the lateral pressure of the soil is greatly relieved. In drawing the pile 1 from the ground, it can be easily drawn out because the pile 1 is separated from the soil by the sheet 5 in contact with the pile 1 and the adherence of even highly cohesive soil to the pile 1 is prevented. Also, the size of the hole formed in drawing the pile from the ground is minimized, and therefore, the cracking and subsidence of the ground can be prevented. |
