| 摘要 |
PURPOSE:To construct a pile having uniform and necessary design strengths by a method in which a mixture of excavated soil and a solidifying agent is mixed with the solidifying agent and aggregate to prepare an aggregate-mixed soil, and after the lower end of an excavating shaft reaches a given place, the aggreagate-mixed soil is discharged under a pressure from the lower end of the excavating shaft. CONSTITUTION:While turning an excavating shaft 1 by a driver 15, a soil solidifying agent 2 is injected and mixed with excavated soil to form the first mixed soil 5 under the ground until the lower end of the excavating shaft is reached a given position. The first mixed soil 5 is screened through a sieve 17 to remove outsized gravels, etc., and the first mixed soil 5 is further mixed with a soil solidifying agent and aggregate, e.g., sand, in a mixer 18 to prepare the second mixed soil 7. The second mixed soil 7 is discharged under pressure from the lower end of the excavating shaft 1 and filled into the excavated pit 8 while the excavating shaft 1 is pulled up. Thus, a pile 9 is formed. |
