JP3256852B2 - Earth auger method, earth auger device and pile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth auger method, in which an auger casing and a pile of an earth auger device are engaged with each other, sandwiched by a chuck of a pile press-in / draw-out machine and press-fitted, and an earth auger device and a pile. In particular, the present invention relates to an earth auger method, an earth auger device, and a pile that can be efficiently installed by a press-fitting chuck having a simple configuration.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view showing an example of the structure of an engaging member of the earth auger method. In the earth auger method, an auger casing 102 of an earth auger device 101 and a pile such as a steel sheet pile 103 to be press-fitted are engaged with each other by rail-shaped engaging members 104, 104 and guide-shaped engaging members 105, 105. In this state, the ground auger device 101 is sandwiched between the chucks of the pile press-in and pull-out machine, and
In this method, the steel sheet pile 103 is efficiently and accurately pressed into the ground by digging while guiding the steel sheet 3. The outer peripheral side of the auger casing 102 has two engaging members 104, 104
Projecting from the auger casing 1 by a chuck configured to avoid these engagement members 104, 104.
02 is pinched. On the steel sheet pile 103 side, the steel sheet pile 103 is inserted between the holding claws with the chuck opened, and then two engaging members 105, 105 are attached to the tip of the steel sheet pile 103 by welding or the like, so that the chuck While minimizing complication, the auger casing 102 and the steel sheet pile 103 can be clamped together by the chuck, and both can be engaged at a position avoiding the claw of the chuck.

[0003]

However, the work of attaching the two engaging members 105, 105 to the steel sheet pile 103 requires a new steel sheet pile 10 at a pile driving site with a poor footing.
Each time the chuck 3 is mounted on the chuck, it needs to be mounted, which poses a problem in terms of mounting accuracy, work safety and work efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide an earth auger method capable of efficiently performing a pile with a constant axial distance between a pile and a casing without increasing the complexity of a chuck structure and improving the pile construction accuracy. An earth auger device and a pile are provided.

[0005]

In order to solve the above-mentioned problems, an earth auger apparatus for an earth auger method according to the present invention comprises an engaging member for regulating a distance between an axis and a pile to be constant. An earth auger device for an earth auger method in which a ground is bored while being held by a chuck of a pile press-in / pull-out machine while being engaged with a pile, wherein the engaging member is connected to the chuck when the auger casing is held by the chuck. It is characterized in that the auger casing is attached to a tip end position of the auger casing which does not interfere with a detachable fastening mechanism such as a bolt.

Further, in the earth auger method of the present invention, an engaging member is provided for mutually engaging the auger casing and the press-fitting pile of the earth auger device, and the distance between both axes is regulated to be constant via the engaging member. Further, the auger casing and the press-fitting pile are simultaneously sandwiched by chucks of a pile press-in and pull-out machine, and the earth auger method of press-fitting the pile while drilling the ground with an earth auger device. The auger casing is attached to a position where the auger casing does not interfere with the chuck when the auger casing is held by the chuck by a detachable fastening mechanism. Further, the engaging member of the pile is
It is formed in such a size that it can pass through the open gap of the chuck, and is arranged at a position where it does not interfere with the chuck when the pile is clamped by the chuck.

Further, the earth auger method pile according to the present invention engages with the rail member of the auger casing along the longitudinal direction thereof to regulate the distance between the axes of the earth auger device and the auger casing to be constant. It is a pile for the earth auger method, which is provided with a guide member and is pressed into the chuck of the pile press-in / pull-out machine while being engaged with the auger casing, wherein the guide member passes through the open gap of the chuck together with the pile body. It is formed in a size that is easy to handle, and is arranged at a position where it does not interfere with the chuck when the pile body is sandwiched between the chucks. The pile of the above configuration, also, including the earth auger method using the same pile, without the need to attach the guide member to each pile at the construction site, put the pile with the guide member attached in advance to the chuck, If the pile is pulled up in contact with the corresponding auger casing below the engagement position, the pile can be pressed in while being held by the chuck while being engaged with the auger casing.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a partly broken engagement member of the earth auger method of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG. 1.

Auger casing 1 of earth auger device
Has a rail member 2 as an engagement member. And
The steel sheet pile 3, which is a press-fitting pile, includes a guide member 4 that can be engaged with the rail member 2, and the rail member 2 and the guide member 4 constitute an engagement member of the earth auger method.

The rail member 2 has a T-shaped cross section as shown in FIG. 2, and a plurality of bolts 5 can be detachably mounted on the outer peripheral surface of the tip of the auger casing 1 along its axial direction. Attach by the fastening mechanism. The mounting position is a position below the chuck 6 of the pile press-in / pull-out machine when press-fitting the steel sheet pile 3. The rail member 2 is attached and detached after the auger casing 1 is put into the chuck 6 and detached before the auger casing 1 is removed from the chuck 6.

The guide member 4 is formed on the inner surface of the web 3a of the steel sheet pile 3 so as to engage with the rail member 2 along the longitudinal direction thereof. , Fixing portion 7 of chuck 6 for holding web 3a
It is kept within the range of the open gap dimension B between the movable section 8 and the movable section 8.

The handling of the engaging operation of the engaging member is as follows. First, after holding the auger casing 1 of the earth auger device with the chuck 6 of the pile press-in / pull-out machine, the rail member 2 is attached to the outer periphery of the tip of the auger casing 1 in the axial direction with the bolts 5.

Next, a steel sheet pile 3 to which a guide member 4 serving as an engagement member is attached in advance is inserted through an open gap B between the fixed portion 7 and the movable portion 8 of the chuck 6. Then, the steel sheet pile 3 is lowered until the guide member 4 is positioned below the rail member 2 of the auger casing 1, and the steel sheet pile 3 is brought closer to the auger casing 1 from there. Can be combined.

FIG. 3 is a front view showing a press-fit preparation state according to the earth auger method of the present invention, and FIG. 4 is an enlarged sectional view taken along line CC of FIG. When the auger casing 1 is put into the chuck 6 of the pile press-in / draw-out machine 12 located at the tip of the existing pile row 11, the rail member 2 is attached to the tip. Next, the press-fit steel sheet pile 3 to which the guide member is attached is put into the chuck 6, and the steel sheet pile 3 is attached to the auger casing 1 by the above-described procedure.
By pressing the chuck 6 in this engaged state, the press-fitting operation can be started.

In the press-fitting step, the upper part is simultaneously held while the auger casing 1 and the steel sheet pile 3 are engaged with each other at every elevating stroke of the chuck 6, and press-fitting is performed by a known method. The steel sheet pile 3 is press-fitted in this way, and when a series of press-fitting is completed, the rail member 2 is removed with the auger casing 1 raised to the initial position. By lifting the entire earth auger device with a crane or the like, the auger casing 1 is detached from the chuck 6 of the pile press-in / pull-out machine 12.

[0016]

The present invention has the following effects. The earth auger device according to the above configuration includes the earth auger method using this device, puts the auger casing in a state where the engagement member is removed from the chuck, and places the engagement member on the auger casing by a detachable fastening mechanism. With this configuration, the pile can be drilled while being held by the chuck of the pile press-in / draw-out machine while engaging the pile via the engaging member of the earth auger device. Therefore, since the chuck does not require the escape of the engaging member for inserting the auger casing, the pile press-in / pull-out machine has a high degree of freedom in the structure of the chuck, and the pile with the engaging member is suppressed while the structure is not complicated. It is possible to easily configure a chuck suitable for charging the wafer.

In the pile having the above structure, including the earth auger method using the pile, a pile on which a guide member is mounted in advance is put into a chuck, and the pile is brought into contact with the auger casing below the engagement position to raise the auger. The pile can be pressed in while being held by the chuck while being engaged with the casing. Therefore, there is no need to weld the guide members to the individual piles at the construction site, and the construction can be performed efficiently and safely. The earth auger method using the earth auger device and the pile can efficiently and accurately perform the pile press-in operation.

[Brief description of the drawings]

FIG. 1 is a side view showing a partially broken engagement member of the earth auger method of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a front view showing a press-fit preparation state by the earth auger method of the present invention.

FIG. 4 is an enlarged sectional view taken along line CC of FIG. 3;

FIG. 5 is a cross-sectional view showing a main part of an engaging member of a conventional earth auger method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Auger casing (Earth auger device) 2 Rail member (engaging member) 3 Steel sheet pile 3a Web 4 Guide member (engaging member) 5 Bolt (fastening mechanism) 6 Chuck 7 Fixed part 8 Movable part B Open gap dimension

Continuation of front page (56) References JP-A-7-127060 (JP, A) JP-A-51-67610 (JP, A) JP-A-55-114791 (JP, A) JP-A-56-142927 (JP) JP-A-52-154205 (JP, A) JP-A-8-193327 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D 7/20 E02D 7/00

Claims (4)

(57) [Claims] 1. An earth auger method comprising: an engaging member for regulating a distance between an axis of a pile and an axis to be constant; The earth auger device for an earth auger method, wherein the engagement member is attached to a position where the engagement member does not interfere with the chuck when the auger casing is sandwiched between the chucks by a detachable fastening mechanism. . 2. An auger casing and a press-fitting stake of an earth auger device are provided with engaging members that engage with each other, the distance between both axes is regulated to be constant via the engaging members, and the auger casing and the press-fitting stake are press-fitted. In the earth auger method in which the pile is simultaneously pinched by the chuck of the pile press-in / pull-out machine and the pile is pressed in while drilling the ground by the earth auger device, the engaging member of the auger casing is when the auger casing is clamped by the chuck. Earth auger method characterized by being attached to a position that does not interfere with the chuck by a detachable fastening mechanism. 3. An auger casing, comprising: a rail member of an auger casing and a guide member which is engaged with the rail member along the longitudinal direction thereof so as to regulate a constant distance between the auger casing and the auger casing. In the pile for the earth auger method, which is sandwiched and pressed into the chuck of the pile press-in / pull-out machine, the guide member is formed to have a size capable of passing through the open gap of the chuck together with the pile body, and the pile body is chucked. A pile for the earth auger method, wherein the pile is arranged at a position where it does not interfere with the chuck when it is sandwiched between. 4. An earth auger method in which the auger casing and the pile according to claim 3 are simultaneously held by a chuck of a pile press-in / draw-out machine, and the pile is press-fitted while drilling the ground with an earth auger device.