| 摘要 |
PURPOSE:To cut down on the cost of construction for an underground wall by a method in which a PC plate having a cutting edge on its bottom edge and through holes provided in parallel are erected, an excavator for inside excavation is inserted into each through hole and operated, and the PC plate is settled by moving soil and cutting the ground by the cutting edge. CONSTITUTION:A PC plate 2 having a cutting edge projected downwards on its bottom edge and plural vertical through holes 2a provided in parallel in its inside is erected between buried piles 1, and the cutting body 3a of an excavator for inside excavation is inserted into the through hole. The excavator 3 is operated and the PC plate 2 is settled by actions of excavation and soil moving and also by cutting action caused by gravity to the cutting edge of the PC plate 2. A solidifying agent, e.g., cement milk, etc., is then injected between the space at the lower end part for foot protection 5, the piles 1 are pulled out, an iron bar cage (not illustrated) is inserted into the hole of the piles 1, and concrete is placed. |
