JP2020060024A - Pile pressing-in device, self-traveling method on pile of pile pressing-in device, and construction method of sheet pile continuous wall - Google Patents

Abstract

To make a pile pressing-in device taking reactive force from an existing pile and pressing-in a pile into a ground stably travel even on a pile row with a large pile pitch and to press-in a pile with high accuracy by using the pile pressing-in device.SOLUTION: A chuck device 3, intermediate clamp devices 4A, 4B, and a rear clamp device 5 are connected in a longitudinal direction of a pile pressing-in device 1. The intermediate clamp devices and the rear clamp device are respectively configured so as to grip an upper end portion of an existing pile PS. The chuck device is configured so as to grip a pile P1 to be pressed-in. Relative ascending/descending operation and front/back operation between the chuck device and the intermediate clamp devices are made possible. Relative ascending/descending operation and front/back operation between the intermediate clamp devices and the rear clamp device are made possible. In a state where a pile P2 pressed-in a ground G is gripped by the chuck device and an upper end of an existing pile PS3 is gripped by the rear clamp device, the intermediate clamp devices can be separated from an existing pile and move in front and back.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pile press-fitting device, a self-propelled method on a pile of the pile press-fitting device, and a method for constructing a continuous sheet pile wall.

  As described in Patent Documents 1 and 2, a conventional pile press-fitting device includes a saddle that fixes a machine body to a pile row formed of existing piles for reaction force, and a front-back direction that is installed in the saddle. A pile press-in / pull-out chuck provided via a slide mechanism and capable of moving up and down. The pile press-fitting device grips an existing pile with a clamp provided on a saddle, presses the pile at the tip of the pile row by a chuck using the existing pile as a reaction force means, and moves the machine body on the extended pile row. The pile rows will be extended in sequence. The procedure to move the machine is to grasp the high part of the pile in the middle of press fitting the tip of the pile row with the chuck, loosen the clamp to raise the machine, move the machine forward with the slide mechanism provided on the saddle, and lower the machine. The movement is completed by tightening the clamp. Continue the press-fitting of the piles during the press-fitting at the new position after this movement. By reversing this, the pile can be pulled out.

The pile pitch in the pile row constructed by the pile press-fitting construction to the ground by the pile press-fitting device is equivalent to one pile diameter if constructed so that the pile and the adjacent pile are in contact with each other, and it is 1 between the pile and the adjacent pile. If there is a space equivalent to the pile diameter, it will be equivalent to two pile diameters.
Conventionally, when a pile row is constructed with a pile pitch of 2 pile diameters or more (for example, 2.5 times the pile diameter), an adapter connected to the pile head as described in Patent Document 3 provides a pile and a pile. There is also a method in which a structure (engagement portion 2 of Patent Document 3) that can be grasped by the above-mentioned clamp is provided between the two to perform construction.

JP 2000-319880 A JP, 2004-183442, A JP, 2013-238030, A

However, in self-propelled operation on a pile using the above-mentioned adapter, about three such adapters are required in addition to the pile press-fitting device, so the number of articles to be managed and handled increases. Further, it has been necessary to manufacture a plurality of types of the above adapters in order to cope with different pile diameters, different pile pitches, and combinations thereof, and to prepare them according to the site of use.
It is necessary to connect about three adapters on the pile row, remove the adapter at the end of the self-propelled direction that the pile press-fitting device has passed through, send it to the top in the self-propelled direction, and attach it. It was complicated. When following the pile press-fitting device, a power unit that supplies driving force to the pile press-fitting device or a self-propelled machine on a pile, such as a crane used to build a pile or move an adapter, follow 7 piles on the pile row. It became necessary to connect some adapters.
When constructing a curved pile row, the adapters cannot be connected to each other and the supporting force of the pile press-fitting device is weakened, so that the reaction force that can be endured during press-fitting becomes small, so that the press-fitting may be limited.

When constructing a pile row with a pile pitch of 2 pile diameters or more (for example, 2.5 times the pile diameter), it is considered to enable self-propelling only by the function of the pile press-fitting device without using the adapter.
However, in the pile press-fitting device, it is necessary to provide about three of the clamps and to hold about three existing piles with each clamp in order to obtain a high press-fitting force. In this case, since the pile pitch is two or more pile diameters, the total length of the saddle that supports the three clamps becomes too long. Therefore, in a situation where the entire pile press-fitting device is supported by the pile gripped by the chuck in the self-propelled process and the saddle and the clamp are floated, the moment due to the weight of the pile press-fitting device applied to the pile gripped by the chuck becomes large. The moment due to the weight of the pile press-fitting device becomes large, which may cause the pile to tilt during press-fitting and affect the precision of press-fitting of the pile.If the pile gripped by the chuck does not have sufficient supporting force, the pile press-fitting device will fall. There is also a risk of

  The present invention has been made in view of the above problems in the prior art, a pile press-fitting device that presses a pile into the ground by taking a reaction force from an existing pile, and a pile press-fitting device of a pile row even if the pile pitch is large. It is an object to reduce the moment due to its own weight and the load on the supporting piles so that the supporting piles can be stably self-propelled and to press-in the piles accurately with the pile press-fitting device.

The invention according to claim 1 for solving the above problem is a pile press-fitting device for press-fitting a pile into the ground by taking a reaction force from an existing pile,
A chuck device, an intermediate clamp device, and a rear clamp device are connected in the front-rear direction of the pile press-fitting device,
The intermediate clamping device and the rear clamping device are each configured to be able to grip the upper end portion of the existing pile,
The chuck device is configured to be able to grip a press-fitted pile,
Relative up-and-down movement and back-and-forth movement of the chuck device and the intermediate clamp device are enabled,
Relative up-and-down movement and forward-backward movement of the intermediate clamp device and the rear clamp device are enabled,
While holding the upper ends of the existing piles by the intermediate clamp device and the rear clamp device, the chuck device moves up and down, whereby the piles gripped by the chuck device can be press-fitted into the ground.
While holding the pile press-fitted into the ground by the chuck device and holding the upper end of the existing pile by the rear clamp device, the intermediate clamp device was disengaged from the existing pile so that it could be moved back and forth. It is a pile press-fitting device.

  The invention according to claim 2 is the pile press-fitting device according to claim 1, in which any one of the chuck device, the intermediate clamp device, and the rear clamp device is allowed to move left and right.

According to a third aspect of the present invention, the intermediate clamp device includes two first clamp devices arranged on the front side and second clamp devices arranged on the rear side.
The pile press-fitting device according to claim 1 or 2, wherein the first and second clamp devices and the second clamp device are allowed to perform a relative back-and-forth movement.

The invention according to claim 4 is a saddle that is long in the front-rear direction of the pile press-fitting device,
A first slide frame supported by the saddle so as to be movable back and forth;
A second slide frame supported by the saddle so as to be movable back and forth,
The intermediate clamp device is disposed below the saddle,
The chuck device is supported so as to be able to move up and down on a mast that is erected on the first slide frame so as to be able to rotate.
The said rear clamp apparatus is a pile press-fitting apparatus as described in any one of Claim 1 to 3 supported by the lower end of the raising / lowering frame supported by the said 2nd slide frame so that raising / lowering operation was possible.

  The invention according to claim 5 is the pile according to any one of claims 1 to 4, wherein the chuck device, the intermediate clamp device, and the rear clamp device are configured to grip a tubular pile. It is a press-fitting device.

The invention according to claim 6 is the same pile row as the pile press-fitting device according to any one of claims 1 to 5 while constructing a pile row by press-fitting the pile into the ground at a predetermined pile pitch. A self-propelled method on a pile of a pile press-fitting device that moves forward,
By pressing the pile gripped by the chuck device into the ground in a state where the upper end of the existing pile is gripped by the intermediate clamp device and the rear clamp device, 1 from the top existing pile that is gripped by the intermediate clamp device. A pile in front of the pile pitch and a press-fitting process of press-fitting the piles in front of the two pile pitches;
While gripping the piles in front of the two pile pitches by the chuck device and gripping the upper ends of the existing piles by the rear clamp device, the intermediate clamp device is separated from the existing piles and moved forward, An intermediate portion advancing step in which the upper end of the pile in front of one pile pitch is gripped by the intermediate clamp device;
The rear clamp device is disengaged from the existing pile and moved forward, and the upper end of the existing pile that is one pile pitch forward of the existing pile gripped by the rear clamp device in the intermediate portion moving step is clamped to the rear clamp. And a rearward advancing step of gripping by the device, the self-propelled method on the pile of the pile press-fitting device.

  The invention according to claim 7 uses the pile press-fitting device according to claim 5 to press-fit a tubular pile into the ground at a predetermined pile pitch twice the pile diameter to construct a fly pile row, and at the same time, to perform the chuck device. Is a method of constructing a continuous sheet pile wall in which the sheet pile can be grasped by means of the chuck device and the sheet pile is held by the chuck device to construct the continuous sheet pile wall in parallel with the row of piles.

According to the present invention, in a state in which the entire pile press-fitting device is supported by the front chuck device and the rear clamp device on both front and rear sides, the intermediate portion including the intermediate clamp device can be moved forward, and the pile pitch is large. The pile press-fitting device can be stably self-propelled even on a pile row.
According to the self-propelled type, since the moment held by the pile press-fitting device is not applied to the pile gripped by the chuck device, the pile does not incline during press-fitting construction, and the pile can be accurately press-fitted by the pile press-fitting device. it can.

It is a right side view of the pile press-fitting device which concerns on one Embodiment of this invention, and shows a shortened state. It is a right side view of the pile press-fitting device which concerns on one Embodiment of this invention, and shows a full length extension state. It is a vertical cross-sectional view including the axis of the left and right operating cylinders of the clamp device of the pile press-fitting device according to one embodiment of the present invention, (a) the state where the clamp device is close to the right, (b) the clamp device is left. Shows the state of approaching. It is a right side view showing a process of pile press-fitting and self-propelling of a pile press-fitting device concerning one embodiment of the present invention. It is a right side view showing a process of pile press-fitting and self-propelling of a pile press-fitting device concerning one embodiment of the present invention. It is a right side view showing a process of pile press-fitting and self-propelling of a pile press-fitting device concerning one embodiment of the present invention. It is a top view of the pile press-fitting apparatus which concerns on one Embodiment of this invention, and shows the state corresponding to the curved pile row. It is a top view (a) and right side view (b) which show the implementation condition of the construction method of the sheet pile continuous wall by the pile press-fitting apparatus which concerns on one Embodiment of this invention, at the time of a steel pipe pile press-fit. It is a top view (a) and right side view (b) which show the implementation condition of the construction method of the sheet pile continuous wall by the pile press-fitting apparatus which concerns on one Embodiment of this invention, at the time of steel sheet pile press-fitting.

  An embodiment of the present invention will be described below with reference to the drawings. The following is one embodiment of the present invention and does not limit the present invention.

[Outline of pile press-fitting device]
First, the pile press-fitting device 1 will be described with reference to FIGS. 1 to 5.
As shown in FIGS. 1, 2 and 3, the pile press-fitting device 1 of the present embodiment is a pile press-fitting device that presses the steel pipe pile (P1) into the ground G by taking a reaction force from the existing steel pipe pile PS, The saddle 2, the chuck device 3, the first clamp device 4A, the second clamp device 4B, and the third clamp device 5 are provided.
The saddle 2 corresponds to a main frame of the main body that supports each part, and is formed to be long in the front-rear direction.
The first clamping device 4A and the second clamping device 4B correspond to an intermediate clamping device. The intermediate clamp devices 4A and 4B are arranged below the saddle 2. The two middle clamp devices 4A and 4B are composed of a first clamp device 4A arranged on the front side and a second clamp device 4B arranged on the rear side.
The third clamp device 5 corresponds to the rear clamp device.
The pile press-fitting device 1 has a structure in which a chuck device 3, intermediate clamp devices 4A and 4B, and a rear clamp device 5 are connected in the front-rear direction. From the front side, the chuck device 3, the first clamp device 4A, the second clamp device 4B, and the third clamp device 5 are arranged in this order.
The intermediate clamp devices 4A and 4B and the rear clamp device 5 are each configured to be able to grip the upper end portion of the existing steel pipe pile PS.
The chuck device 3 is configured to be capable of gripping the press-fitted steel pipe pile (P1) from the outside, and can grip an arbitrary height position of the steel pipe pile (P1).
The clamp devices 4A, 4B, 5 are gripping mechanisms that grasp by opening a plurality of clamp members inserted in the existing steel pipe pile PS, and the chuck device 3 is plural toward the center of the insertion part into which the steel pipe pile (P1) is inserted. The gripping mechanism for advancing and retracting the chuck member is used. Both are conventionally used.

The mechanical structure from the saddle 2 to the chuck device 3 is as follows.
A first slide frame 31 is supported on the saddle 2 so as to be movable back and forth by driving a cylinder device 32. A mast 33 is erected on the first slide frame 31 so as to be pivotable. A chuck frame 35 is supported on the mast 33 so that it can be moved up and down by driving a cylinder device 34. The chuck device 3 is provided on the chuck frame 35.

The mechanical structure from the saddle 2 to the clamp device is as follows.
A second slide frame 51 is supported on the saddle 2 so as to be movable back and forth by driving a cylinder device 52. An elevating frame 54 is supported by the second slide frame 51 so that the elevating operation can be performed by driving the cylinder device 53. The third clamp device 5 is supported by the lower end of the elevating frame 54, and can be arranged behind the saddle 2 at the same height as the intermediate clamp devices 4A and 4B.

A front and rear slider 41 is supported by the saddle 2 so as to be movable back and forth by driving a cylinder device 42. The left and right sliders 43 are supported on the front and rear sliders 41 so as to be able to move left and right by driving the cylinder device 44. The first clamp device 4A and the second clamp device 4B are supported by the lower ends of the left and right sliders 43.
Further, the third clamp device 5 is also similar with respect to the left and right operation mechanism, and the left and right sliders 55 are supported by the elevating frame 54 so as to be able to move left and right by the drive of the cylinder device 56, and the third clamp device 5 is supported by the left and right sliders 55. Has been done.

With the above mechanical configuration, the chuck device 3 and the intermediate clamp devices 4A and 4B can be relatively moved up and down and the forward and backward operations, and the intermediate clamp devices 4A and 4B and the rear clamp device 5 can be relatively moved. It can be moved up and down and back and forth.
The chuck device 3 is allowed to swing left and right by the turning motion of the mast 33.
Therefore, any of the chuck device 3, the intermediate clamp devices 4A and 4B, and the rear clamp device 5 can be moved left and right.
Further, the relative front-back movement of the first clamp device 4A and the second clamp device 4B is enabled.

As shown in FIGS. 1 and 4 (a), the pile press-fitting device 1 moves up and down with the chuck device 3 while holding the upper ends of the existing steel pipe piles PS by the intermediate clamp devices 4A and 4B and the rear clamp device 5. By doing so, the steel pipe pile (P1) gripped by the chuck device 3 can be pressed into the ground G.
The steel pipe pile (P1) is gripped by the chuck device 3, and the chuck frame 35 and the chuck device 3 are lowered by driving the cylinder device 34, so that the steel pipe pile (P1) gripped by the chuck device 3 is pushed down and press-fitted into the ground. To do. Further, due to the rotation function of the chuck device 3, it is possible to rotate the steel pipe pile (P1) around its central axis and push down the steel pipe pile (P1) to rotationally press fit the ground.
With the progress of the press-fitting of the steel pipe pile (P1), the chuck device 3 is opened to release the grip of the steel pipe pile (P1), and the cylinder frame 34 is driven to raise the chuck frame 35 and the chuck device 3 to move the steel pipe pile (P1). ) Is gripped again and the press-fitting or rotary press-fitting is continued to press the steel pipe pile (P1) into the ground G to a desired depth.

  As in the change from the state of Fig. 5 (a) to the state of Fig. 5 (b) or from the state of Fig. 5 (b) to the state of Fig. 5 (a), the steel pipe piles pressed into the ground G ( P2) is gripped by the chuck device 3 and the upper end of the existing steel pipe pile PS3 is gripped by the rear clamp device 5, and the intermediate clamp devices 4A and 4B are detached from the existing steel pipe piles PS1 and PS2 and moved back and forth. You can do it.

[Self-propelled method of pile press-fitting device]
Next, a self-propelled method on the pile of the pile press-fitting device 1 using the above-described operation function will be described with reference to FIGS. 4 to 6.
As shown in FIG. 4 (a), the steel pipe pile P1 gripped by the chuck device 3 is gripped by the chuck device 3 while the upper ends of the existing steel pipe piles PS1, PS2, PS3 are gripped by the intermediate clamp devices 4A, 4B and the rear clamp device 5. Press into G. This steel pipe pile P1 is pushed down to the same level as the leading existing steel pipe pile PS1 gripped by the intermediate clamp device 4A, and the press-fitting construction of the steel pipe pile P1 is completed.
After the press-fitting construction of the steel pipe pile P1 is completed, the mast 33 is moved forward by one pile pitch by the driving of the cylinder device 32 (see FIGS. 1 and 2) and the cylinder device 52 (see FIGS. 1 and 2), and FIG. As shown in, the steel pipe pile P2 is inserted into the chuck device 3 and held by the chuck device 3.
Subsequently, as shown in FIG. 4 (c), the steel pipe pile P2 gripped by the chuck device 3 is pressed into the ground G until a predetermined supporting force is obtained.

Next, the intermediate portion advancing process is executed as shown in FIG. 5 (a) → FIG. 5 (b) → FIG. 5 (c).
That is, while the steel pipe pile P2 that is two pile pitches forward from the first clamp device 4A is gripped by the chuck device 3 and the upper end of the existing steel pipe pile PS3 is gripped by the rear clamp device 5, the intermediate clamp devices 4A and 4B are provided. Is separated from the existing steel pipe piles PS1 and PS2 and moved forward, and the upper ends of the steel pipe piles P1 and PS1 that are one pile pitch forward are gripped by the intermediate clamp devices 4A and 4B. (The steel pipe pile P1 is grasped by the first clamp device 4A, and the steel pipe pile PS1 is grasped by the second clamp device 4B.)

Next, the rearward advance process is performed as shown in FIG. 6 (a) → FIG. 6 (b) → FIG. 6 (c).
That is, the rear clamp device 5 is moved away from the existing steel pipe pile PS3 to move forward, and the existing steel pipe pile 1 pile pitch forward from the existing steel pipe pile PS3 gripped by the rear clamp device 5 in the intermediate portion moving step. The upper end of PS2 is held by the rear clamp device 5.
As described above, as shown in FIG. 6 (c), the pile press-fitting device 1 has the same device configuration as that of FIG. In this state, the press-fitting of the steel pipe pile P2 gripped by the chuck device 3 is continued and pushed down to the same level as the existing steel pipe pile, and the press-fitting construction of the steel pipe pile P2 is completed. Therefore, by repeating the above process, new steel pipe piles can be press-fitted into the ground G at a predetermined pile pitch to construct a pile row of steel pipes while advancing on the pile row.

[Support for pile pitch and curve construction]
According to the operation function of the pile press-fitting device 1 described above, the intervals between the first clamp device 4A, the second clamp device 4B, and the third clamp device 5 can be changed, so that various pile pitches can be dealt with. The figure takes as an example the case of constructing an example of jump piles in which the pile pitch is 2.5 times the pile diameter. There is no need to use an adapter connected to the pile head.
Further, since all of the chuck device 3, the intermediate clamp devices 4A and 4B, and the rear clamp device 5 can be moved to the left and right, it is possible to cope with the construction in which the pile row is curved as shown in FIG. Is.

[Construction method for continuous wall of sheet pile]
Next, a method of constructing a continuous sheet pile wall by the pile press-fitting device 1 described above will be described with reference to FIGS. 8 and 9.
In the manner described above, as shown in FIG. 8, the steel pipe pile P is press-fitted into the ground G at a predetermined pile pitch which is twice the pile diameter to construct the jump pile rows P, P ....
At the same time, as shown in FIG. 9, the chuck device 3 is caused to grip the sheet pile attachment 6 so that the chuck device 3 can grasp the steel sheet pile S. The chuck device 3 is caused to grip the steel sheet pile S via the sheet pile holding attachment 6 to construct the sheet pile continuous walls S, S ... In parallel with the flying pile row P, P.
The sheet pile holding attachment 6 includes a holding device for holding the steel sheet pile S, and the outer shape thereof has a shape and dimensions that can be held by the chuck device 3. Therefore, by causing the chuck device 3 to grip the sheet pile attachment 6, the steel sheet pile S can be the target to which the pile press-fitting device 1 is press-fitted. Alternatively, the steel sheet pile S may be held by the chuck device by replacing the steel sheet pile S with a chuck device capable of holding the steel sheet pile S.
Further, the angle of the steel sheet pile S gripped by the sheet pile holding attachment 6 can be changed by the rotating function of the chuck device 3. While utilizing the rotation function and the turning function of the mast 33, as shown in FIG. 9, the chuck device 3 is shaken to the side of the pile row P, P ... The press-fitting of the sheet pile S is executed.
The pile press-fitting device 1 is used to construct the row of piles P, P ... And the sheet pile gripping attachment 6 is also applied to construct the sheet pile continuous walls S, S.
It is effective to extend the row of piles P, P ... And the continuous wall of sheet piles S, S ... in parallel so that the pile press-fitting device 1 does not move backward.

According to the pile press-fitting device of the above-described embodiment, the intermediate portion including the intermediate clamp devices 4A and 4B in a state where the front chuck device 3 and the rear clamp device 5 support the entire pile press-fitting device on both front and rear sides. Can be moved forward, and the pile press-fitting device 1 can be stably driven by itself even on a pile row having a large pile pitch.
According to the self-propelled method, the steel pipe pile (P2) gripped by the chuck device 3 is not subjected to a moment due to its own weight of the pile press-fitting device 1, so that the pile during press-fitting construction does not incline, and the pile press-fitting device 1 ensures accuracy. The pile can be pressed in well.
It is possible to drive on piles having a wide pile pitch without using the adapter for connecting to the pile heads described above.
Since the above-mentioned adapter for connecting to the pile head is not used, a predetermined number of these adapters, if necessary, various types of different sizes are manufactured and carried to the site, the adapter is installed on the pile head, and the same as the pile press-fitting device is moved. Since all the labor and work such as moving the adapter with a crane and withdrawing the adapter after the construction is completed, the construction efficiency is improved, the construction period is shortened, and the construction cost is reduced.
It is possible to change the arrangement pitch of the first clamp device 4A, the second clamp device 4B, and the third clamp device 5 in the front-rear direction according to the pile pitch of the pile row, and the range of application of the pile pitch of the pile row that can be self-propelled. Is wide.
Since the upper end of the existing pile is gripped by the clamp devices 4A, 4B, 5 without using the above-mentioned adapter for connecting to the pile head, the pile press-fitting device 1 can be press-fitted and self-propelled as long as the pile press-fitting device 1 can be constructed. Therefore, the applicable range of pile diameter is wide.
As mentioned above, carp construction and corner construction are also possible.
In addition, although the thing corresponding to a steel pipe pile was demonstrated in the above embodiment, the applied pile is not limited to a steel pipe pile. The present invention is also effective for concrete piles (pillars) and other piles that easily break when a moment is applied.

1 Pile press-fitting device 2 Saddle 3 Chuck device 4A 1st clamping device (intermediate clamping device)
4B 2nd clamp device (intermediate clamp device)
5 3rd clamp device (rear clamp device)
6 Sheet Pile Attachment 31 Slide Frame 32 Cylinder Device 33 Mast 34 Cylinder Device 35 Chuck Frame 41 Front and Rear Slider 42 Cylinder Device 43 Left and Right Slider 44 Cylinder Device 51 Slide Frame 52 Cylinder Device 53 Cylinder Device 54 Lifting Frame 55 Left and Right Slider 56 Cylinder Device G Ground P Steel pipe pile PS Existing steel pipe pile S Steel sheet pile

Claims (7)

A pile press-fitting device that presses a pile into the ground by taking a reaction force from an existing pile,
A chuck device, an intermediate clamp device, and a rear clamp device are connected in the front-rear direction of the pile press-fitting device,
The intermediate clamping device and the rear clamping device are each configured to be able to grip the upper end portion of the existing pile,
The chuck device is configured to be able to grip a press-fitted pile,
Relative up-and-down movement and back-and-forth movement of the chuck device and the intermediate clamp device are enabled,
Relative up-and-down movement and forward-backward movement of the intermediate clamp device and the rear clamp device are enabled,
While holding the upper ends of the existing piles by the intermediate clamp device and the rear clamp device, the chuck device moves up and down, whereby the piles gripped by the chuck device can be press-fitted into the ground.
While holding the pile press-fitted into the ground by the chuck device and holding the upper end of the existing pile by the rear clamp device, the intermediate clamp device was disengaged from the existing pile so that it could be moved back and forth. Pile press-fitting device. The pile press-fitting device according to claim 1, wherein any one of the chuck device, the intermediate clamp device, and the rear clamp device is allowed to move left and right. The intermediate clamp device includes two, a first clamp device arranged on the front side and a second clamp device arranged on the rear side,
The pile press-fitting device according to claim 1 or 2, wherein the first and second clamp devices are allowed to perform relative back and forth movements. A long saddle in the front-back direction of the pile press-fitting device,
A first slide frame supported by the saddle so as to be movable back and forth;
A second slide frame supported by the saddle so as to be movable back and forth,
The intermediate clamp device is disposed below the saddle,
The chuck device is supported so as to be able to move up and down on a mast that is erected on the first slide frame so as to be able to rotate.
The pile press-fitting device according to any one of claims 1 to 3, wherein the rear clamp device is supported by a lower end of an elevating frame supported by the second slide frame so as to be capable of elevating. The pile press-fitting device according to any one of claims 1 to 4, wherein the chuck device, the intermediate clamp device, and the rear clamp device are configured to grip a tubular pile. A pile press-fitting apparatus for advancing on the pile row while constructing a pile row by press-fitting piles into the ground at a predetermined pile pitch by the pile press-fitting apparatus according to any one of claims 1 to 5. It is a self-propelled method on the pile,
By pressing the pile gripped by the chuck device into the ground in a state where the upper end of the existing pile is gripped by the intermediate clamp device and the rear clamp device, 1 from the top existing pile that is gripped by the intermediate clamp device. A pile in front of the pile pitch and a press-fitting process of press-fitting the piles in front of the two pile pitches;
While gripping the piles in front of the two pile pitches by the chuck device and gripping the upper ends of the existing piles by the rear clamp device, the intermediate clamp device is separated from the existing piles and moved forward, An intermediate portion advancing step in which the upper end of the pile in front of one pile pitch is gripped by the intermediate clamp device;
The rear clamp device is disengaged from the existing pile and moved forward, and the upper end of the existing pile one pile pitch forward of the existing pile gripped by the rear clamp device in the intermediate portion moving step is clamped to the rear clamp. A self-propelled method on a pile in a pile press-fitting device, which comprises a rearward advancing step of gripping by a device. With the pile press-fitting device according to claim 5, a tubular pile is press-fitted into the ground at a predetermined pile pitch that is twice the pile diameter to construct a flying pile row, and at the same time the sheet pile can be gripped by the chuck device, A method of constructing a continuous sheet pile wall in which a chuck device is made to grip the sheet pile and a continuous sheet pile wall arranged in parallel with the row of piles is constructed.

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