| 摘要 |
PURPOSE:To prevent the occurrence of ground subsidence and cracks in the nearby ground after the completion of construction as well as shorten the period of construction by a method in which a grout is injected into the space formed as soon as a sheet pile is drawn up. CONSTITUTION:A sheet pile 1a, positioned at one end, of sheet piles 1a-1i driven underground is drawn up until separated completely from the ground by means of a vibro hammer 2 hung down from a crane 5. Then, the vibro hammer 2 is removed and its tip is wound with a wire, the vibro hammer 2 is pulled up to the ground by a crane 5, and then a grouting pipe is penetrated into the space formed. The adjacent sheet pile 1b is then separated from the ground by the vibro hammer 2 and pulled up by a small length, and at the same time, a grout 4 is injected through the grouting pipe 3 into the space. The same operations are repeated to inject the grout 4 into the spaces and lastly the grouting pipe 3 is pulled out. |
