| 摘要 |
PURPOSE:To easily and exactly settle a caisson by a method in which the ground is drilled and agitated by a drill for a neccesary part of planar projection area for a caisson body and the caisson body is set on the ground. CONSTITUTION:The ground 1 is drilled to form a hole 3 and agitated by an excavator, e.g., drill, etc., for a necessary part of planar projectional area A for a caisson body 2. The caisson body 2 is settled on the ground 1. Since the bearing strength of the ground 1 can be lowered, the caisson body 2 can be smoothly settled into the ground 1. |
