JP2001182060A - Pile press-in system and pile press-in method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile press-in system and a pile press-in method using the system reducing installation and working space and also reducing construction machines. SOLUTION: This pile press-in system 1 for pressing a cylindrical pile member (such as a steel pipe sheet pipe 10) into the ground, is provided with a press-in drawing machine 2 provided with a support part 21 for supporting the cylindrical pile member, and pressing the cylindrical pipe member into the ground while supporting it; an auger screw 4 inserted in the cylindrical pile member and excavating the ground from the inside of the cylindrical pile member when pressing in the cylindrical pile member by the press-in drawing machine; a cylindrical connecting member (such as a casing member 3) detachably connected to the upper end part of the cylindrical pile member; and a driving support device (such as an auger driving support device 5) having a clamping means (such as a clamping device 54) for clamping the connecting member from the inside, and driving means (such as an auger motor 52) connected to the upper end part of the auger screw to rotate the auger screw. The driving support device is constituted to be movable inside the connecting member and the cylindrical pile member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile press-in system for press-fitting a tubular pile member such as a steel pipe pile into the ground while excavating underground with an auger screw or the like, and a pile press-in method using this system. .

[0002]

2. Description of the Related Art Conventionally, as a method of press-fitting a steel pipe pile into the ground, a method of directly press-fitting a steel pipe pile with a hydraulic device is known. However, according to this method, when the soil at the site is hard, the press-fitting resistance of the tip of the steel pipe pile is too large and it is difficult to press-fit. Therefore, in the case of such a hard ground, a medium digging method of press-fitting a steel pipe pile with a hydraulic device after excavating the ground with a spiral member such as an auger screw is generally performed.

[0003] As an example of the above-mentioned digging method, there is a pile driver in which a base mast is provided with a leader mast, which is described in Japanese Patent Publication No. 2985068. In this pile driver, a leader mast is erected at a tip of a bracket of a swivel base in a base machine having a crawler and a swivel base, and the leader mast is supported at three points by a base machine via a stay or the like. From the top of the leader mast, a drive mechanism that can be guided up and down by the leader mast is suspended, and a vertical rotation axis of the drive mechanism is provided inside a cylindrical pile member (tubular pile member). A drilling spiral member (auger screw) that can be inserted and penetrates the pile member into the ground is connected and rotatably suspended. Further, below the drive mechanism, there is provided an annular member or the like which is attached to the steel pipe in which the spiral member is inserted and restrains the upper end of the pile member. Then, a spiral member is inserted from above into the inside of the pile member whose upper end portion is restrained by the annular member, and the ground at the lower end portion of the pile member is excavated and discharged by the spiral member while the pile member is self-weighted. The members are laid down.

[0004]

By the way, in the case of the above-mentioned pile driver, a leader mast for guiding a driving mechanism for driving the spiral member is provided upright on the pile driver itself, and this leader mast is used as a base. Since the structure is supported by the machine, the space occupied by the outrigger projecting from the base machine to the periphery to reliably support the leader mast is large. Therefore, there is a problem that the installation space and the working space of the pile driver are taken up in the site space, and the other working space is narrowed. At the site, there was also a request to reduce the number of construction machines as much as possible.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pile press-fitting system in which the installation and working space are more compact and the number of construction machines can be reduced, and a pile press-fitting method using this system. The purpose is.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, for example, as shown in FIGS. 1 to 14, a tubular pile member (for example, a steel pipe sheet pile 10 or the like) is provided. In a pile press-fitting system (1) for press-fitting into the ground, a press-fitting / pulling-out machine (2) including a support portion (21) for supporting the tubular pile member and press-fitting the ground while supporting the tubular pile member. An auger screw (4) that is inserted into the cylindrical pile member and excavates ground from within the cylindrical pile member when the cylindrical pile member is press-fitted by the press-in / draw-out machine; A cylindrical connecting member (for example, casing member 3 and the like) detachably connected to the upper end portion, and a clamping means (for example, a clamp device 54 and the like) for clamping the connecting member from the inside are provided. Connected to the top A drive support device (for example, an auger drive support device 5 or the like) having a driving means (for example, an auger motor 52 or the like) for rotating the auger screw, wherein the drive support device is provided inside the connection member and the cylindrical pile member. Is configured to be movable.

According to the first aspect of the present invention, the cylindrical pile member is supported by the press-fitting / pulling-out machine, and the ground is excavated by the auger screw connected to the driving means of the driving support device. Since the pile member is press-fitted, the cylindrical pile member can be press-fitted into the ground without erecting a leader mast as in the related art, and the work space can be made more compact.
In addition, since the main components of the construction machine are the press-in / draw-out machine and the drive support device, the number of components is smaller than that of the conventional construction machine. Here, the pile member, the tubular pile member to be a sheet pile, etc., may be of any type as long as it is press-fitted into the ground and cylindrical, such as a steel pipe pile, a steel pipe sheet pile, a tubular concrete pile, Shaped concrete wall.

According to a second aspect of the present invention, in the pile press-fitting system according to the first aspect, the drive support device is configured to clamp the connection member by the clamp means.
A vertical cylinder device (55) for vertically moving the auger screw connected to the driving means is provided.

According to the second aspect of the invention, it is needless to say that the same effect as the first aspect of the invention is obtained. In particular, since the auger screw can be moved up and down by the vertical cylinder device, The auger screw can be pushed inside, and it is possible to excavate even on hard ground.

According to a third aspect of the present invention, in the pile press-in system according to the first or second aspect, the connection member has a discharging port for discharging the earth and sand lifted up by the auger screw. .

According to the third aspect of the invention, it is needless to say that the same effect as the first or second aspect of the invention can be obtained. In particular, the earth and sand lifted up by the earth discharging port is discharged to the outside. Therefore, it is possible to prevent the excavation force from lowering due to clogging of the tubular pile member with earth and sand.

According to a fourth aspect of the present invention, there is provided a pile press-fitting method for press-fitting a tubular pile member into the ground using the pile press-fitting system according to any one of the first to third aspects, wherein the auger screw is inserted. And connecting the auger screw to the drive means and then clamping the drive member by the clamp means to lift the drive support device to the lifting device. And supported by the press-in / draw-out machine,
The ground is excavated from the inside of the first cylindrical pile member by the auger screw, and the first cylindrical pile member is pressed into the ground by the press-in / draw-out machine.

According to the fourth aspect of the invention, the same effect as the first aspect of the invention can be obtained. In addition, since the connection between the first tubular pile member and the connection member and the connection between the driving means and the auger screw are performed on the ground, the work is facilitated.

According to a fifth aspect of the present invention, in the method for press-fitting a pile according to the fourth aspect, after the first cylindrical pile member is press-fitted into the ground by the press-fitting / pulling-out machine, the connection member and the first cylinder are inserted. The second cylindrical pile member to be press-fitted into the connection member in a state where the connection with the pile member and the connection between the driving means and the auger screw are released, and then the driving support device is clamped. After the attachment, the second cylindrical pile member is supported by the press-in / pull-out machine, then the clamp by the clamp means is released, the drive support device is lowered, and then the auger screw embedded in the ground Is connected to the driving means, and then, while taking a rotational reaction force by clamping the second cylindrical pile member by the driving support device, the second rotation is performed while the auger screw is rotated in the reverse direction. When the driving means reaches a predetermined position above the connection member by pulling up the inside of the cylindrical pile member together with the auger screw, the connection member is clamped by the clamping means, and then the second cylindrical member The pile member is moved to a place to be press-fitted, and then the ground is excavated from within the second cylindrical pile member with the auger screw, and the second cylindrical pile member is pressed into the ground with the press-fitting / pulling-out machine. It is characterized by doing.

According to the fifth aspect of the invention, it is needless to say that the same effect as that of the fourth aspect of the invention can be obtained. In particular, when the auger screw is inserted into the second cylindrical pile member,
Since the pulling out of the auger screw from the first tubular pile member can be performed at the same time, the working efficiency can be improved.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a cylindrical pile press-fitting system and a cylindrical pile press-fitting method according to an embodiment of the present invention. 1 to 13 are diagrams showing stepwise a pile press-in method using the pile press-in system of the present embodiment.
Drawing 14 is a figure for explaining composition of a drive support device and a connection member of a pile press-fitting system.

The pile press-in system 1 shown in FIGS.
For example, as shown in FIG. 3, a press-in / draw-out machine 2 for press-fitting or pulling a steel pipe sheet pile 10 as a cylindrical pile member into or out of the ground, and a casing member 3 (connection) connected to an upper end portion 10 a of the steel pipe sheet pile 10. Auger screw 4 inserted into steel pipe sheet pile 10, auger drive support device 5 (drive support device) equipped with auger motor 52 (drive means) for rotating auger screw 4, and auger drive support device 5 Is constructed by a crane 6 or the like that lifts the upper and lower parts freely.

The press-in / draw-out machine 2 includes a support portion 21 for vertically supporting the steel pipe sheet pile 10 to be press-fitted. The steel pipe sheet pile 10 can be pressed into the ground while being supported. As shown in FIG. 14, the casing member 3 is formed in a cylindrical body having a wide-open lower end 3a and a narrow-open upper end 3b. The lower end 3a is connected to the steel pipe sheet pile 10 and is driven by the upper end 3b. The support device 5 is fixed or inserted. Further, the casing member 3 connects a steel pipe clamp 31 for detachably fixing the steel pipe sheet pile 10, an earth discharging port 32 for discharging earth and sand excavated by the auger screw 4, and a wire 7 for suspending the steel pipe sheet pile 10. And an upper connecting portion 35 for connecting to the auger driving support device 5 with a wire 8. The steel pipe clamp section 31 includes, for example, a fixing ring 31a,
A cylinder device 31b is provided. The steel pipe sheet pile 10 is inserted between the fixing ring 31a and the cylinder device 31b, and is pressed and fixed by the cylinder device 31b. A discharge chute 32a can be detachably attached to the discharge port 32, and the discharge lifted up by the excavation of the auger screw 4 is discharged to the outside through the discharge chute 32a, whereby the steel pipe sheet pile 10 is discharged. Prevents clogging of soil discharge inside.

The auger screw 4 excavates the ground from inside the steel pipe sheet pile 10 when the steel pipe sheet pile 10 is press-fitted by the press-in / draw-out machine 3.
Is linked to The auger drive support device 5 includes a main body 51
And the auger motor 52 provided at the upper part of the main body,
An auxiliary screw 53 for connecting the auger screw 4 to the auger motor 52; a clamp device 54 for clamping the casing member 3 from the inside;
A vertical cylinder device 55 for moving the auger screw 4 up and down in a state clamped by a guide, a guide rail 56 for guiding the movement of the main body 51, a wire lock device 57 provided at the center of the main body, a hydraulic hose 58, A guide roller 59 and the like for a hydraulic hose are provided.

The clamp device 54 extends a cylinder device (not shown) provided therein, clamps the casing member 3 by pressing the inner surface of the casing member 3, and when the auger drive support device 5 is lowered. The inside of the steel pipe sheet pile 10 can be pressed and clamped. When the steel pipe sheet pile 10 is press-fitted, the vertical cylinder device 55 applies pressure from above to
, The auger screw 4 is reliably excavated even on hard ground without slipping. The wire lock device 57 locks the wire 8 with a hydraulic cylinder or the like, and thereby connects the auger drive support device 5 and the upper connecting portion 35 of the casing member 3 with the wire 8. The guide roller 59 is a roller for smoothly sending out the hydraulic hose 58 to the inside of the steel pipe sheet pile 10 when the auger drive support device 5 descends inside the steel pipe sheet pile 10 at the time of collecting the auger screw 4. This is to prevent damage.

The crane 6 supports the auger drive and support device 5 in a state of being lifted and lowered so as to be able to move up and down.
The auger screw 4 connected to is also moved up and down.

Next, a pile press-fitting method using the pile press-fitting system 1 of the present embodiment will be described with reference to FIGS. First, as shown in FIG. 1, a first steel pipe sheet pile 1 in which an auger screw 4 is inserted on a trolley 9 and a macula material 91.
And the first steel pipe sheet pile 10 is connected to the lower end 3a on the wide-mouth side of the casing member 3 by the steel pipe clamp 31 and the auxiliary screw 5
The auger screw 4 is connected to 3. Next, as shown in FIGS. 2 and 3, the auger drive support device 5 is lifted by the crane 6 while the upper end portion 3b on the narrow opening side of the casing member 3 is clamped from the inside by the clamp device 54, and It is supported by the support 21. At this time,
The casing member 3 is erected by sliding the carriage 9 toward the wire 61 of the crane 6. In order to prevent the casing member 3 from dropping, a wire lock device 57 (FIG. 1)
4) and the upper connecting portion 35 (FIG. 14) of the casing member 3 are connected by the wire 8. Next, as shown in FIG. 4, the ground is excavated from the inside of the first steel pipe sheet pile 10 by the auger screw 4, and at the same time, the first steel pipe sheet pile 10 is pressed into the ground by the press-in / draw-out machine 2. At this time, the auger screw 4 can be pushed into the ground by the vertical cylinder device 55 (FIG. 14) of the auger drive support device 5, and the excavation can be performed even on the hard ground.

Next, as shown in FIG. 5, the connection between the casing member 3 and the first steel sheet pile 10 and the connection between the auxiliary screw 53 and the auger screw 4 are released. Next, as shown in FIG. 6, the second steel pipe sheet pile 11 placed on the macula material 91 is connected to the lower connecting portion 34 of the casing member 3.
Are connected by the wire 7 attached to the. Next, as shown in FIGS. 7 and 8, the auger drive support device 5 is lifted by the crane 6 and positioned directly above the first steel sheet pile 10, and then, as shown in FIG. The lower end 3a on the wide-open side of the casing member 3 and the second steel pipe sheet pile 11 are connected by a steel pipe clamp 31 while being supported by the section 21. Next, as shown in FIG. 10, the clamping of the casing member 3 by the clamp device 54 is released, the auger drive support device 5 is lowered by the crane 6, and the upper end 4 a of the auger screw 4 embedded in the ground
And the auxiliary screw 53 are connected.

Then, as shown in FIG. 11, the auger drive support device 5 is lifted by the crane 6 until the clamp device 54 reaches the upper end 3b of the narrow opening of the casing member 3 while rotating the auger screw 4 in the reverse direction. As a result, the auger screw 4 is pulled out and the second steel pipe sheet pile 1 is pulled out.
The auger screw 4 can be inserted into the inside 1 at the same time. Then, when the clamp device 54 reaches the upper end 3 b of the narrow opening of the casing member 3, the casing device 3 is clamped by the clamp device 54. Here, when the lifting ability of the crane 6 is low, the auger screw 4 is pulled up as follows. That is, first, the cylinder (not shown) of the clamping device 54 is extended to clamp the second steel pipe sheet pile 11 from the inside. Next, the auger screw 4 is pulled out by the vertical cylinder device 55 (FIG. 14) to the stroke end of the vertical cylinder device 55 while rotating the auger screw 4 in the clamped state while rotating the auger screw 4 in the reverse direction. At this time, the crane 6 is hoisted in accordance with the extension movement of the cylinder. Next, the clamp of the clamp device 54 is released, and the clamp device 54 is raised upward by the contraction operation of the vertical cylinder device 55. Then
Perform the clamp operation at the stroke end position and fix it again. By repeating the above operation, the auger screw 4 is gradually pulled out. Thus, the auger screw 4 can be reliably pulled out even on hard ground.

Next, as shown in FIG. 12, the second steel pipe sheet pile 11 is moved to the place where the press-fitting is to be performed, and as shown in FIG. Excavation and press-in / draw-out machine 2
Thereby, the second steel sheet pile 11 is pressed into the ground. And
The steps shown in FIG. 7 and thereafter are sequentially repeated to complete the press-fitting operation of the steel pipe sheet pile.

In the above embodiment, the tubular pile member is a steel pipe sheet pile, but the present invention is not limited to this, and a concrete pile or a steel pipe pile may be used. Further, the connection between the casing member and the steel pipe sheet pile may be based on a pin structure, and may be any as long as it is detachable. Further, the crane, the auger screw, the casing member, the auger drive support device, and the like may have any configuration as long as they are functionally the same. Others
Needless to say, the specific detailed structure can be appropriately changed.

[0027]

According to the present invention, the cylindrical pile member is supported by the press-in / draw-out machine, and the ground is excavated by the auger screw connected to the driving means of the driving support device.
Since the cylindrical pile member is press-fitted by the press-in / pull-out machine, the cylindrical pile member can be press-fitted into the ground without erecting a leader mast as in the related art, and the work space is made more compact. You can do it. In addition, since the main components of the construction machine are the press-in / draw-out machine and the drive support device, the number of components is smaller than that of the conventional construction machine.

[Brief description of the drawings]

FIG. 1 is a first working process diagram showing stepwise a pile press-fitting method of the present invention.

FIG. 2 is a second work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 3 is a third work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 4 is a fourth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 5 is a fifth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 6 is a sixth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 7 is a seventh work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 8 is an eighth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 9 is a ninth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 10 is a tenth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 11 is an eleventh work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 12 is a twelfth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 13 is a thirteenth work process diagram showing stepwise the pile press-fitting method of the present invention.

FIG. 14 is a diagram for explaining a configuration of a driving support device and a connection member of the pile press-fitting system.

[Explanation of symbols]

 Reference Signs List 1 pile press-in system 2 press-in / pull-out machine 3 casing member (connection member) 4 auger screw 5 auger drive support device (drive support device) 6 crane 10 steel pipe sheet pile (tubular pile member) 32 discharge port 52 auger motor (drive means) 54 Clamping device (clamping means) 55 Vertical cylinder device

Continued on the front page (72) Inventor Masaaki Ohno 3948-1, Fushida, Kochi City, Kochi Prefecture F-term in Giken Seisakusho Co., Ltd. (Reference) 2D029 CA02 CB01 CC04 CD06 2D050 AA04 AA06 CA02 CB03 CB10 CB22 EE22

Claims (5)

[Claims] 1. A pile press-fitting system for press-fitting a cylindrical pile member into the ground, comprising a support portion for supporting the cylindrical pile member, and a press-fitting pull-out machine for press-fitting the ground while supporting the cylindrical pile member. An auger screw inserted into the tubular pile member and excavating ground from within the tubular pile member when press-fitting the tubular pile member by the press-fitting / pulling-out machine; and an upper end of the tubular pile member A cylindrical connecting member detachably connected to the auger screw; and a driving means for rotating the auger screw by connecting the upper end of the auger screw with the clamping means for clamping the connecting member from the inside. A pile press-fitting system, comprising: a drive support device, wherein the drive support device is configured to be movable in the connection member and the tubular pile member. 2. The pile press-fitting system according to claim 1, wherein the drive support device vertically moves the auger screw connected to the drive unit while the connection member is clamped by the clamp unit. A pile press-in system comprising a device. 3. The pile press-fitting system according to claim 1, wherein the connection member has a discharge port for discharging earth and sand lifted up by the auger screw. 4. A pile press-fitting method for press-fitting a tubular pile member into the ground using the pile press-fitting system according to claim 1, wherein the first tubular pile member has the auger screw inserted therein. When,
While connecting the connecting member, the auger screw is connected to the driving means, and then the cylindrical pile member is pressed by the press-in / pull-out machine in a state where the driving support device is clamped to the connecting member by the clamping means. Supporting, and then excavating the ground from within the first cylindrical pile member with the auger screw, and press-fitting the first cylindrical pile member into the ground with the press-fitting / pulling-out machine. Method. 5. The pile press-fitting method according to claim 4, wherein after the first tubular pile member is pressed into the ground by the press-in / pull-out machine, the connection between the connection member and the first cylindrical pile member is performed. And the connection between the drive means and the auger screw is released. Then, after attaching the second tubular pile member to be press-fitted to the connection member in a state where the drive support device is clamped, 2 is supported by the press-in / pull-out machine, then the clamp by the clamp means is released, the drive support device is lowered, and the auger screw buried in the ground is connected to the drive means. Then, while taking the rotational reaction force by clamping the second cylindrical pile member by the drive support device, the inside of the second cylindrical pile member is rotated while the auger screw is rotated in the reverse direction. When the driving means reaches a predetermined position above the connecting member by pulling up with the auger screw, the connecting member is clamped by the clamping means, and then a place where the second cylindrical pile member is to be press-fitted. Then, the ground is excavated from the inside of the second cylindrical pile member by the auger screw, and the second cylindrical pile member is pressed into the ground by the press-fitting / pulling-out machine. Press fit method.