| 摘要 |
PURPOSE:To promote work efficiency by placing a working floor to set a form while injecting self hardening stabilization liquid, inserting a water tank and, at the same time, drawing up the water tank while draining after the stabilization liquid is solidified to construct the foundation after the solidification of the external stabilization liquid. CONSTITUTION:The excavation of parts 1 and 2 of the foundation and underground beam is carried out while injecting self hardening stabilization liquid SG into a hole 4, and a form 5 such as a double-U steel, etc. is inserted and set in the hole 4 after the completion of excavation. A water tank 6 filled with water W is inserted inside the form 5 to collect the stabilization liquid SG drained from the excavated hole 4. In the time when the external stabilization liquid SG of the form 5 reaches a specific solidified condition, the water W is drained into the water tank 6 from a valve 61 to draw up the water tank 6. Furthermore, the water W is filled into the form 5, and after the stabilization liquid SG placed to the outside of the form 5 is solidified, the water W in the form 5 is drained out, and the upper concrete 7 is placed thereon. According to the constitution, a construction period is shortened, and costs can be reduced. |
