JP3195417B2 - Steel pipe with chuck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for driving a pile in which a retaining pile is driven by using a hiring pile under a loss portion from the ground surface for partial underground construction or the like, and a chuck used therefor. About hiring steel pipes.

[0002]

2. Description of the Related Art In a part of underground construction, a pile is cast below a loss portion from the surface of the ground.
As shown in the figure, the loss b
The steel material c corresponding to the length is driven by a vibration driving machine d. And the mountain retaining steel material c is left without being pulled out while being driven into the loss part b. Loss part b
When a longer retaining steel material c was driven in, a surplus portion at the top was cut off after driving for a predetermined length.

[0003]

When a retaining pile is driven under a loss portion as in the prior art, a steel retaining material corresponding to the length of the loss portion is used and the pile is left buried. Unnecessary pile retaining steel was left underground, which was uneconomical. In addition, when a mountain retaining steel material longer than the loss portion is driven, there is a cutting operation, which requires time and effort. Therefore, the present invention, when driving a pile pile below the ground surface with a loss portion, without using a steel pile remaining underground, so that the pile pile can be economically driven underground, furthermore It is an object of the present invention to enable piles to be easily driven underground corresponding to loss portions having different lengths.

[0004]

The hired steel pipe of the present invention is driven from above a pile to be cast in an underground part, and the upper and lower hired steel pipes are slidable via a sheath pipe. At the same time, the upper and lower hiring steel pipes were configured so that the side sliding with respect to the sheath pipe could be fixed at an appropriate position on the sheath pipe, and a chuck device was attached to the lower part of the lower hiring steel pipe. In addition, the method of driving a pile according to the present invention is a method of driving a pile below a ground surface with a loss portion by using a hired steel pipe. That is, in that method, after driving the pile until the upper end is close to the ground surface, using a hired steel pipe equipped with a chuck device at the lower end, the chuck device is connected to the upper end of the driven pile, and The pile was driven into the predetermined depth by driving the upper end, then the connection between the chuck device and the pile was released, and the employed steel pipe was pulled out.

[0005]

When a pile pile is driven underground using the hired steel pipe of the present invention, a chuck device attached to the lower part of the hired steel pipe is connected to the upper end of the pile whose upper end is driven close to the ground surface. After adding and driving the pile to the specified depth with hired steel pipe,
Since the chuck device is released from the stake and the employed steel pipe is withdrawn, the steel pipe is not left underground as in the prior art, which is economical. In addition, since the length of the hired steel pipe can be adjusted by sliding the upper and lower members, it is possible to cope with the different lengths of the loss part from the ground surface to a predetermined depth, and the pile pile is cast at different depths underground Can be.

[0006]

An embodiment of the present invention will be described with reference to FIGS. The employed steel pipe of the present invention is used when a loss part is opened from the ground surface and a pile is driven into an underground part below the pile, after driving until the upper end of the pile is near the ground surface, it is connected to the upper end of the pile. The pile is driven into the basement. The hired steel pipe 1 is, for example, an upper hired steel pipe 1a and a lower hired steel pipe 1b having a rectangular cross section.
In the present embodiment, the sheath pipe 2 is connected to the upper inner periphery of the lower hiring steel pipe 1b by welding, and the upper hiring steel pipe 1a is slidably inserted into the upper outer periphery of the sheath pipe 2. In addition, you may make it connect the sheath pipe 2 to the upper employed steel pipe 1a by welding, and slide the lower employed steel pipe 1b with respect to the sheath pipe 2.

Screw holes 3 are provided at appropriate intervals between the upper and lower portions of the upper hiring steel pipe 1a, and screw holes 4 are also provided in the upper and lower portions of the sheath tube 2, so that the sliding position of the upper hiring steel pipe 1a is slid. Is set to a predetermined value, and the screw hole 3 is aligned with the screw hole 4 of the sheath tube 2 and can be connected by the screw 5. The upper end of the sheath tube 2 is reinforced by a reinforcing plate 2a. Further, among the screw holes 3 of the upper employed steel pipe 1a, those which are located at positions deviated from the sheath tube 2 are stopped by closing the screw 6a, and the screw holes 4 of the sheath tube 2 are removed from the upper employed tube 1a. The screw 6b is also stopped at the position where it is positioned, and the screw hole 4 is closed. Further hired steel pipe 1
a reinforcing band 7 is provided at the lower part of the upper steel pipe 1a.
The reinforcement band 7 is provided with a hole at a position corresponding to the screw hole 3.

A lid 8 with a reinforcing plate is attached to the upper end of the upper hiring steel pipe 1a, and a gripping metal 9 is attached to the upper side of the lid, and is driven by a vibration type driving machine d to be described later. Further, a hydraulic hose 11 is passed through the upper side wall of the upper hiring steel pipe 1a and communicates with a chuck device 12 described later, so that the chuck device 12 can be operated by hydraulic pressure. A lower portion of the lower hiring steel pipe 1b is reinforced by a reinforcing plate 10, and a chuck device 12 is attached to a lower end. The chuck device 12 is communicated with the hydraulic hose 11, and is controlled by a hydraulic control so that the grip portion 1 of the chuck device 12 is held.
2a is opened and closed.
Can be connected to or released from the upper end of a pile a to be driven into the ground.

A method of using the hired steel pipe 1 to open a loss portion b from the ground surface and drive a pile a below the loss portion b will be described with reference to FIG. First, the pile a is driven from above the ground surface by the vibration driving machine d, and is driven until the upper end of the pile a is close to the ground surface GL. Next, in order to add the employed steel pipe 1 to the pile a, the chuck device 12 is hydraulically operated to connect the chuck device 12 at the lower end of the employed steel pipe 1 to the upper end of the driven pile a. Then, by driving the upper end of the employed steel pipe 1 with the vibration driving machine d, the pile a is driven from the ground surface to the lower side with the loss portion b opened. Next, the chuck device 12 is hydraulically controlled to release the connection with the pile a, and the work is completed by pulling out the employed steel pipe 1 by a winch operation. When changing the length of the employed steel pipe 1, the screw connecting the upper employed steel pipe 1a and the sheath pipe 2 is removed, and the upper employed steel pipe 1a is removed.
Is slid and screwed at a predetermined length, the pile a can be driven into the basement corresponding to the loss portions b having different lengths.

[0010]

Since the length of the steel pipe with a chuck according to the present invention can be adjusted, the pile can be easily driven into the basement in accordance with the loss portions having different lengths. In the method of driving a pile by using the steel pipe with a chuck according to the present invention, the pile is driven into the lower side with a loss portion by driving the steel pipe with the chuck, and the steel pipe with the chuck is driven after the driving. Since the steel is extracted, the steel material is not left underground, and the pile pile can be economically driven into the basement.

[Brief description of the drawings]

FIG. 1 is a partially broken side view of a steel pipe with a chuck according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a partial cross-sectional view showing a connecting portion between a lower hiring steel pipe and a sheath pipe.

FIG. 4 is a partial cross-sectional view showing a connecting portion between an upper hiring steel pipe and a sheath pipe.

FIG. 5 is an explanatory diagram showing a method of driving a pile using a steel pipe with a chuck.

FIG. 6 is an explanatory view showing a conventional pile driving method.

[Explanation of symbols]

 a Pile b Loss part 1 Hired steel pipe 1a Upper hired steel pipe 1b Lower hired steel pipe 2 Sheath pipe 12 Chuck device

Claims (1)

(57) [Claims] 1. A hiring steel pipe which is removably driven from above a pile to be driven into an underground part, wherein the upper and lower hiring steel pipes are configured to be slidable via a sheath pipe. A hiring steel pipe with a chuck, characterized in that a side of the hiring steel pipe that slides with respect to the sheath pipe can be connected to an appropriate position of the sheath pipe by a fixing member, and a chuck device is attached to a lower part of the lower hiring steel pipe.