JP3448662B2 - Filling method around pile - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for injecting a pile peripheral fixation liquid from above into a pile using a pile peripheral fixation liquid. The present invention relates to a method for filling a pile circumference fixed liquid at the time of setting a pile for the purpose of accurately controlling quality and supplying a homogeneous liquid without excess or shortage. 2. Description of the Related Art Conventionally, in order to fill a pile peripheral fixation liquid, a method has been adopted in which the pile peripheral fixation liquid is mixed with muddy water in a pile hole while discharging the pile peripheral fixation liquid from the tip of a post-drilling head after drilling a pile hole. (JP-A-63-27616). [0003] According to the above, it is necessary to excavate a pile hole, so that there is a problem that it can be used only for a pre-boring type pile construction method. According to the present invention, however, since the pile periphery fixing liquid is filled from the upper part of the pile hole, not only the pre-boring method but also the impact penetrating method or the medium digging method is used. This solves the conventional problem. That is, according to the present invention , a liquid storage cylinder for a pile periphery fixing liquid including a pile hole inside is provided above a position where the pile is to be installed, and the pile is lowered inside the liquid storage cylinder and the liquid is fixed. Into the storage cylinder,
Supply the perimeter fixation liquid between the pile and the inner wall of the pile hole.
In the method of filling the perimeter fixation liquid into the pile , the liquid level of the perimeter fixation liquid is controlled to be always constant, and the filling pressure of the perimeter fixation liquid is controlled.
Constant, and regardless of the penetration depth of the pile,
While maintaining the quality, which is filled how the pile circumferential fixative during pile installation which is characterized in that penetrate the pile. [0006] The steel pipe in the above can be used in a circular or square shape. By keeping the liquid level of the pile fixed liquid in the liquid storage cylinder constant, the liquid pressure becomes constant and the liquid can be filled under uniform conditions. The reservoir is usually 1m above the ground
It is also possible to excavate the surface slightly and set up a reservoir on the ground and underground. According to the present invention, the pile circumference fixing liquid is set up at the place where the pile is to be driven, and the pile circumference fixing liquid is poured into the cylinder, and then the pile is penetrated. In addition, the pile circumference fixing liquid can be filled from the ground surface side. Embodiment 1 A steel pipe is installed upright at a position 2 where a concrete pile 1 is to be installed, and a liquid storage cylinder 3 is installed upright on the ground surface 4. After the pile circumference fixing liquid 5 is injected into the liquid storage cylinder 3, the concrete pile 1 is put inside the liquid storage cylinder 3, and the concrete pile 1 is hit and penetrated. In this case, the space between the outer periphery of the concrete pile 1 and the inner wall of the pile hole 6 is sequentially filled with the pile periphery fixing liquid 5. Since the pile periphery fixing liquid 5 is supplied into the liquid storage cylinder 3, the same quality is maintained even when filling, and the quality does not change regardless of the penetration depth of the concrete pile 1. However, if the liquid level of the pile circumference fixing liquid is constantly controlled to be constant, the filling pressure is constant and piled into groundwater to be sufficiently filled (has a large specific gravity). In the figure, reference numeral 9 denotes a supply pipe for the liquid around the pile. [0011] In the case of filling the pile periphery fixing liquid from the lower part of the pile hole as in the prior art, the pile periphery fixing liquid and the mud may be mixed and the quality may become unstable. There is no such fear. Embodiment 2 FIG. 3 shows an embodiment in which a liquid storage cylinder 3 is installed over the ground and underground. After excavating a pile hole 6, a concrete pile 7 is penetrated. This concrete pile 7 is section 8
Although the pile is attached, the annular recessed portion 7a having a small pile diameter is also filled with the uniform pile periphery fixing liquid 5, and the filling is accurate, and there is no possibility that muddy water or the like may enter. According to the present invention, since the pile periphery fixing liquid is filled from the upper part of the pile hole, there is an effect that a constant pressure and uniform pile periphery fixing liquid can be supplied and used successively.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a state before a pile hole is formed according to an embodiment of the present invention. FIG. 2 is a view showing the same penetration. FIG. 3 is a sectional view of another embodiment. [Description of Signs] 1 Concrete pile 2 Planned position 3 Liquid reservoir 4 Ground surface 5 Fixed liquid around the pile 6 Pile hole 7 Concrete pile 8 Pile joint

Claims (1)

(57) [Claims 1] A liquid storage cylinder for fixing around a pile including a pile hole inside is provided above a position where the pile is to be installed, and the pile is mounted inside the liquid storage cylinder. At the same time, the pile periphery fixing liquid is supplied into the liquid storage cylinder, and the pile periphery fixing liquid is supplied between the outer wall of the pile and the inner wall of the pile hole.
In the filling method, the liquid level of the pile peripheral fixation liquid is constantly controlled to be constant, and the filling pressure of the pile peripheral fixative liquid is kept constant,
Regardless of the penetration depth of the pile,
A method for filling a perimeter fixing liquid at the time of pile installation, wherein the pile is penetrated .