JP4431028B2 - Occlusion member attachment and occlusion member press-fitting method - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a closing member attachment of a pile presser and a closing member press-fitting method for press-fitting a closing member between piles when a plurality of piles are continuously press-fitted by a pile pressing machine.

Generally, when a pile is placed, a press-in method for press-fitting piles (including sheet piles) to prevent noise and vibration is known, and the piles are pressed by taking a reaction force from existing piles. In addition, a pile press-in machine (pile press-in / pull-out machine: a pillar) that moves on the pile while press-fitting or pulling out the pile is also known. In addition, when a steel pipe pile is press-fitted, a rotary press-fitting machine (for example, a gyro-pyler) that facilitates the press-fitting by pressing the steel pipe pile around the axis of the steel pipe pile has been developed.
In addition, such a pile press-in machine moves on the piles that have been press-fitted in advance, takes reaction force from these piles, continuously piles the piles and press-fits them into the ground, so that walls such as retaining walls It was developed as one of the main purposes to make a structure (so-called sheet pile wall).

However, in the rotary press-fitting machine described above, since the steel pipe pile is pressed while rotating around the axis, the next sheet pile is engaged while the joint is engaged with the joint of the sheet pile previously press-fitted as in the so-called sheet pile press-fitting. It cannot be pressed.
Therefore, basically, a gap is generated between adjacent steel pipe piles that are rotationally press-fitted. Therefore, it has been proposed to press-fit a member that closes the gap between the steel pipes that have been rotationally press-fitted for earth retaining or water stoppage (for example, see Patent Documents 1 and 2).
In Patent Document 2, the steel pipe piles are not completely closed, but have water permeability.
JP 2001-115447 A JP 2004-278287 A

By the way, with respect to the steel pipe that is press-fitted by the above-described rotary press-fitting machine, the closing member that is press-fitted between the press-fitted steel pipes is thin, and the shape is not cylindrical, for example, L-shaped or the like. There is also a possibility. Therefore, there is a high possibility that the closing member cannot be press-fitted by the rotary press-fitting machine in which the steel pipe is press-fitted.
In this case, as the pile presser, a rotary presser for steel pipes and a pile presser for closing members are required, which increases the cost. In particular, an ordinary pile press-in machine presses a pile with a chuck device that grips and lowers a new pile while holding the pile that has been press-fitted with the clamp device and fixing it on the pile. In this case, the pile gripped by the clamping device and the pile gripped by the chuck device have the same shape. However, since the pile presser for the closing member may be difficult to support the pile presser with the thin and weakly blocking member, it does not hold the previously pressed closing member with the clamp device. There is a possibility that the steel pipe pile that has been previously press-fitted is grasped and the closing member is grasped by the chuck device.

Furthermore, when the pile presser moves on the piles in parallel, the pile that is press-fitted with the clamp device is usually held with the pile presser supported by holding the pile being pressed or pulled out with the chuck device. It is done by grabbing the pile that has been press-fitted with the clamping device again after being moved back and forth, but it is difficult to support the pile press-fitting machine with the closing member being press-fitted by the chuck device, Other movement methods may have to be used.
Therefore, in order to press-fit the closing member between the steel pipe piles press-fitted from the above, a special pile press-in machine is required, which may further increase the cost.

  In addition, in the pile press-in machine for steel pipes, the clamping device is inserted into the upper end of the steel pipe pile and grips the steel pipe pile by expanding the diameter, so that the steel pipe pile can be held even if the steel pipe piles are adjacent to each other. However, since the chuck device grips the steel pipe pile from the outside so that it can be held at a position other than the end of the steel pipe pile, the steel pipe pile that is press-fitted side by side so that the upper end is the same height is adjacent. The steel pipe pile gets in the way and cannot be grabbed.

  An object of the present invention is to provide a closing member attachment of a pile presser capable of press-fitting a closing member with a chuck device of the pile presser and a press-fitting method of the closing member by a pile presser using the closing member attachment. is there.

The invention according to claim 1 is a pile presser 1 for press-fitting a pile by gripping and lowering the pile (steel pipe pile 2) with a chuck device 15 that can be raised and lowered, for example, as shown in FIGS. With a closing member attachment 4 for press-fitting a closing member 3 between adjacent pressed piles using a chuck device of the pile pressing machine when a plurality of piles are press-fitted continuously using There,
A cylindrical main body 41 that can be gripped by the chuck device and can vertically penetrate the closing member;
A grip portion 42 for gripping a closing member penetrating through the cylindrical main body portion;
It is provided with.

Here, the pile press-in machine does not have to be able to self-propell on the pressed-in pile while taking the reaction force from the previously pressed-in pile and press-in the pile. It is only necessary that the cylindrical pile can be press-fitted into the ground by lowering. Moreover, the chuck device should just be the structure which can hold | grip a cylindrical pile and can raise / lower freely. In addition, this invention can be used suitably for the pile press machine which can carry out self-propelled on the press-fitted steel pipe pile while rotating and press-fitting a steel pipe pile by taking reaction force from the press-fitted steel pipe pile.
Moreover, although a pile does not need to be a steel pipe pile, this invention can be used suitably for the steel pipe pile which carries out rotation press fit.
Further, the closing member is not limited to a member that completely closes the steel pipes, and may be formed with holes or the like to have water permeability. Further, the closing member is not necessarily press-fitted into a portion between the steel pipes, and may be press-fitted into a position slightly behind the gap.

According to the first aspect of the present invention, the chuck device grips the cylindrical main body portion of the closing member attachment, and further inserts the closing member into the cylindrical main body portion to hold the closing member by the gripping portion. By lowering the chuck device, the closing member can be press-fitted so as to close the piles. That is, by attaching the closing member attachment to the press-fitting machine in which the pile is press-fitted, the closing member can be press-fitted using a mechanism for press-fitting the pile of the pile press-fitting machine. Thereby, it is possible to press-in the pile and press-in the closing member with a single pile press-in machine, thereby reducing the cost.
In addition, the closing member attachment can be easily attached to the pile presser by causing the chuck device of the pile presser to grip the closing member attachment instead of the pile.

Invention of Claim 2 makes the said pile into a cylindrical pile (steel pipe pile 2) in the obstruction | occlusion member attachment of Claim 1,
At least a part of the grip part is formed to be exposed below the lower end of the cylindrical main body part,
The gripping portion is capable of expanding and contracting the diameter,
Grasping the closing member by reducing the diameter in a state where the closing member is passed through the gripping part,
The cylindrical pile is gripped by expanding the diameter in a state where at least a part of the gripping portion is inserted into the cylindrical pile end.

Here, it is preferable that the pile press-fitting machine is for a cylindrical pile and can be self-propelled on the cylindrical pile. For example, the pile presser is inserted into the upper end of the cylindrical pile and expanded in diameter so that the presser presser body has a clamping device that grips the cylindrical pile and the horizontal direction relative to the presser main unit. It is preferable to include a chuck device that is movable and can be moved up and down. In addition, the pile presser has a structure in which two or more piles can be press-fitted in the front and back by moving the chuck device down after moving the chuck device forward while the presser body is fixed on the pile with a clamp device. It is preferable that And, for example, while the second pile is being press-fitted, while holding the pile in the middle of press-fitting with the chuck device, the holding of the pile by the clamping device is released, and the press-fitting machine main body is lifted forward. It is preferable that the pile presser is movable in the forward direction (forward direction) when the pile is continuously press-fitted by lowering it again after moving it and gripping the pile by the clamp device. .
The cylindrical pile is not limited to a cylindrical steel pipe pile, and may be a square steel pipe pile or a cylindrical precast concrete pile, but the present invention is preferably applied to a cylindrical one that can be rotationally pressed. Can do.

According to the second aspect of the present invention, the closing member attachment can hold not only the closing member but also a cylindrical pile, particularly a cylindrical pile that has already been press-fitted. Thereby, the cylindrical pile already press-fitted by the closing member attachment held by the chuck device can be held, and the pile press-fitting machine can be supported on the pile. Thereby, the pile presser can move on the cylindrical pile that is press-fitted side by side using the closing member attachment without using the pile that is being press-fitted or pulled out. Therefore, it is possible to alongside the indented upper pile successively a plurality of closure members in the pile press-fitting machine reluctant such is self, continue to press fit along the side by side indented pile.
For example, it has a clamp device for gripping a press-fitted cylindrical pile and is supported on the cylindrical pile by the clamp device, and is movable in a horizontal direction relative to the press-fitting machine main unit. In addition, after the cylindrical piles are press-fitted continuously (in a line) by the pile press-in machine using a pile press-in machine equipped with a chuck device that can be moved up and down, the closing member attachment is gripped by the chuck device. And gripping the cylindrical pile press-fitted by the closure member attachment, releasing the grip of the cylindrical pile by the clamp device, moving the press-fitting machine main body horizontally with respect to the chuck device, After gripping the cylindrical pile that has been press-fitted by the clamping device, the pile presser is moved on the side-by-side cylindrical pile, and the blocking member attachment is made to grip the closing member after chucking Press-fitting the closure member by lowering the location.

Invention of Claim 3 is the press-in method of the obstruction member which press-fits an obstruction member using the obstruction member attachment of Claim 1 or 2,
The chuck device of the pile press-fitting machine grips the blocking member attachment, and the blocking member attachment grips the blocking member, and the chuck device press-fits the blocking member between adjacent piles. Features.

  According to the third aspect of the present invention, the closing member can be press-fitted with the chuck device that press-fits the pile of the pile press-fitting machine by the closing member attachment.

According to the present invention, the chuck device grips the cylindrical main body portion of the closing member attachment, further inserts the closing member into the cylindrical main body portion, grips the closing member by the grip portion, and lowers the chuck device in this state. By doing so, the closing member can be press-fitted so as to close between the piles. That is, by attaching the closing member attachment to the press-fitting machine in which the pile is press-fitted, the closing member can be press-fitted using a mechanism for press-fitting the pile of the pile press-fitting machine. As a result, it is possible to press-in the pile and press-in the closing member with a single pile press-in machine, thereby reducing the cost.
In addition, the closing member attachment can be easily attached to the pile presser by causing the chuck device of the pile presser to grip the closing member attachment instead of the pile.

Hereinafter, a closing member attachment and a closing member press-fitting method using a pile presser and a closing member attachment according to an embodiment of the present invention will be described with reference to the drawings.
The pile press-in machine 1 used in this embodiment is a known rotary press-fit machine that press-fits steel pipe piles 2... While rotating around its axis, as shown in FIGS. A saddle 12 provided with a plurality of (for example, three) clamping devices 11,... For holding the steel pipe piles 2,... Enlarged from the inside, and a slide base 13 movable back and forth with respect to the saddle 12. A leader mast 14 that can turn left and right on the slide base 13, a chuck device 15 that is attached to the front surface of the turning mast 14 so as to be raised and lowered, and a main hydraulic cylinder 16 that drives the chuck device 15 up and down relative to the leader mast 14. I have.

The clamping devices 11,... Press the inner surface of the steel pipe pile 2 so as to spread in a horizontal direction by a hydraulic cylinder (not shown) to grip the upper end portion of the steel pipe pile 2, and thereby press the pile presser 1 first. The steel pipe piles 2,... Are supported by the existing steel pipe piles 2, and the steel pipe piles 2,. The clamp devices 11,... Can be moved slightly to the left and right or back and forth with respect to the saddle 12, except for the clamp device 11 serving as a reference for the head. The plurality of steel pipe piles 2 that are press-fitted in line with each other can be gripped by the plurality of clamp devices 11 and can be accommodated even if the intervals between the steel pipe piles 2 are slightly changed.
Further, the slide base 13 moves forward to move the chuck device 15 horizontally to the front side, and without moving the saddle 12, the tip of the existing steel pipe pile 2 gripped by the leading clamp device 11 is moved. In addition, the two steel pipe piles 2 and 2 can be sequentially press-fitted in the front-rear direction.

  Further, the leader mast 14 can be turned left and right with respect to the slide base 13 so that the direction of the steel pipe piles 2... It is possible. By means of the slide base 13 and the leader mast 14, the chuck device 15 is movable in the horizontal direction with respect to the saddle 12 provided with the clamp devices 11,.

Chuck device 15, the lift with its rear side is a vertically movable fitted state on the front side of the reader the mast 14, the main hydraulic cylinder 16, 16 of the left and right that are connected with the reader mast 14 and the chuck device 15 It is designed to be driven.
Further, the chuck device 15 has a pile gripping portion 19 that presses and grips the steel pipe piles 2 that are vertically penetrated by pressing portions 18 that are operated by hydraulic cylinders from the outer four sides. The pile gripping portion 19 can rotate around the upper and lower axes with respect to the outer peripheral portion of the chuck device 15, and the steel pipe pile 2 can be rotationally press-fitted. It is also possible to lower the chuck device 15 without rotating the pile gripping portion 19.

Moreover, since the raising / lowering range of the chuck device 15 is limited, the chuck device 15 is lowered by holding the steel pipe piles 2... And the chuck device 15 is lifted by releasing the steel tube piles 2. It is like that. Thus, the press-fitting of the steel pipe piles 2... And the closing member 3 to be described later is repeated one stroke at a time, and the press-fitting is deeper than the lifting range of the chuck device 15.
When the pile press-in machine 1 sequentially press-fits the steel pipe piles 2,..., As shown in FIG. 1 (A), a new steel pipe is placed in front of the existing steel pipe pile 2 gripped by the above-described leading clamp device 11. After the pile 2 is press-fitted, the slide base 13 is further moved forward, and the steel pipe pile 2 is press-fitted into a position which is two before, in this case, the existing steel pipe pile 2, which is clamped by the clamping device 11 during the press-fitting. Next, by lowering the chuck device 15 that holds the steel pipe pile 2 that is being pressed into the leader mast 14 relative to the leader mast 14, the saddle 12 is relatively raised so that the lower ends of the clamp devices 11,. From the existing steel pipe piles 2..., The saddle 12 is moved forward. At this time, the clamp devices 11,... Are moved above the steel pipe piles 2,... One before the existing steel pipe piles 2,. Next, the saddle 12 is lowered, and the clamp devices 11 are inserted into the steel pipe piles 2... And the clamp device 11 grips the steel pipe piles 2. Thereby, the pile press-in machine 1 moves forward corresponding to one steel pipe pile 2. By repeating the above operation every time the steel pipe pile 2 is press-fitted, the pile press-in machine 1 can be advanced by a distance corresponding to one steel pipe pile 2.

As shown in FIGS. 1 and 2, the closing member attachment 4 of the present invention can be gripped by a chuck device 15 and can have a cylindrical main body 41 that can vertically penetrate the closing member 3, and the cylindrical main body. And a gripping portion 42 for gripping the closing member 3 penetrating through the portion 41.
For example, the cylindrical main body 41 is formed in a cylindrical shape having substantially the same diameter and the same outer peripheral shape as the steel pipe pile 2 so as to be gripped by the chuck device 15. Basically, it can be composed of the same steel pipe as the steel pipe pile 2, but since it is used repeatedly, the shape is stronger than the steel pipe pile 2 (for example, the shape is thicker than the steel pipe pile 2). In addition, it is preferable to have reinforcing ribs (a shape provided with ribs along the circumferential direction or the axial direction) inside.

The grip portion 42 is formed at the lower end portion of the cylindrical main body portion 41, and at least a part thereof is exposed below the lower end of the cylindrical main body portion 41. The vertical width of the exposed portion of the grip portion 42 is substantially the same as the vertical width of the clamp device 11.
The grip portion 42 includes a substantially semicircular arc-shaped fixed portion 43 fixed to the cylindrical main body portion 41 and a semicircular arc-shaped movable portion 44 similar to the fixed portion 43. By combining with the movable part 44, the inside has a hole through which the closing member 3 can be vertically penetrated, and a substantially cylindrical shape that can be inserted into the steel pipe pile 2. That is, the cylindrical gripping portion 42 formed by facing the concave portion side of the semicircular arc-shaped fixed portion 43 and the concave portion side of the movable portion 44 has an inner diameter larger than that of the closing member 3 and an outer diameter of the steel pipe pile 2. It is smaller than the inner diameter. In addition, the holding | grip part 42 can be diameter-expanded so that it may mention later, and can make an outer diameter slightly larger than the internal diameter of the steel pipe pile 2. FIG.

The upper end portion of the fixing portion 43 is firmly fixed to the cylindrical main body portion 41. Also, the left and right end portions where the fixed portion 43 and the movable portion 44 are most closely opposed to each other are connected by the hydraulic cylinder devices 45 and 45, so that the two left and right hydraulic cylinder devices 45 and 45 can be expanded and contracted. Thus, the gripping portion 42 can be expanded and contracted (movable in the perspective (contact / separation) direction).
In addition, the first and second clamping parts 46 and 47 that clamp the closing member 3 in the opposing direction are provided so as to protrude from the center part of the fixed part 43 and the movable part 44 that are opposed to each other at the most distance. It has been.

In this embodiment, L-shaped steel (equilateral mountain-shaped steel) is used as the closing member 3, and the first and second sandwiching portions 46 and 47 have a shape joined at right angles to the L-shaped steel. The shape corresponds to sandwiching one side of the two pieces. Further, the closing member 3 closes between the steel pipe piles 2 and 2 by press-fitting the steel pipe piles 2 and 2 in a state of being substantially in contact with both of the steel pipe piles 2 and 2 which are press-fitted side by side. Water blocking property is imparted to the wall-shaped structure composed of 2,... And the blocking member 3, and the blocking member 3 becomes a water blocking member. The blocking member 3 may be provided with water permeability by providing slits or holes. That is, the closing member 3 can be earthed and does not completely close between steel pipe piles so as to have water permeability, and may be partially closed. As the water stop member, the steel pipe piles may be completely closed.
The first clamping portion 46 has a front end surface that is slightly narrower than one side of the closing member 3 made of L-shaped steel, and protrudes from the recessed central portion inside the arc of the fixed portion 43 toward the movable portion. The front end surface of the movable portion 44 extends into the recessed central portion that is the inner side of the arc.

The second clamping part 47 is formed in substantially the same shape as the first clamping part 46, but its length is shorter than that of the first clamping part 46, and its front end surface does not come out of the recess of the movable part 44. In addition, there is a slight gap between the first end portion 46 and the front end surface.
Here, when the hydraulic cylinder devices 45, 45 described above are operated in the extending direction (advance of the piston), the front end surface of the first clamping portion 46 of the fixed portion 43 and the front end surface of the second clamping portion 47 of the movable portion 44. There is an interval (distance) longer than the thickness of the closing member 3, and one side of the closing member 3 can be inserted between the first holding portion 46 and the second holding portion 47.
Further, when the hydraulic cylinder devices 45 and 45 are operated in the contracting direction (retracting the piston), the front end face of the first holding part 46 of the fixed part 43 and the front end face of the second holding part 47 of the movable part 44 The distance between them becomes shorter than the thickness of the closing member 3. Accordingly, the hydraulic cylinder devices 45, 45 are extended to expand the grip portion 42, and one side of the closing member 3 is inserted between the first clamping portion 46 and the second clamping portion 47, and then the hydraulic cylinder By operating the devices 45, 45 in the reduction direction, the closing member 3 can be held as shown in FIG.

Moreover, when the 1st clamping part 46 was made longer than the 2nd clamping part 47, when the 1 side of the closure member 3 which consists of L-shaped steel is pinched | interposed between these, the entrance corner side of the closure member 3 is provided. The substantially central portion of the portion within the corner portion can be arranged at the central portion of the grip portion 42.
The first sandwiching portion 46 and the second sandwiching portion 47 are detachably attached to the fixed portion 43 and the movable portion 44, respectively. The first sandwiching member 3a to 3c, which will be described later, can be sandwiched. The parts 46a to 46c and the second holding parts 47a to 47c may be exchangeable.
Further, the front end surfaces of the first sandwiching portion 46 and the second sandwiching portion 47 may be provided with a claw portion that prevents slipping.

Further, the outer diameter of the grip portion 42 is smaller than the inner diameter of the steel pipe pile 2 when the hydraulic cylinder devices 45, 45 are operated in the reduction direction to reduce the diameter, and the grip portion 42 can be inserted into the steel pipe pile 2. When the hydraulic cylinder devices 45, 45 are operated in the extending direction, they become slightly larger than the inner diameter of the steel pipe pile 2.
Therefore, in a state where the hydraulic cylinder devices 45, 45 are reduced to reduce the grip portion 42, the grip portion 42 is inserted into the steel pipe pile 2 and then the hydraulic cylinder devices 45, 45 are extended to expand the grip portion 42. If it diameters, as shown to FIG. 2 (B), the fixed part 43 and the movable part 44 will be pressed on the steel pipe pile 2 inner surface, and the steel pipe pile 2 can be hold | gripped similarly to the clamp apparatus 11, ....

  A method for press-fitting the closing member 3 using the pile press-in machine 1 and the closing member attachment 4 will be described. First, as shown in FIGS. 1, 3, 4, and 5, the steel pipe piles 2,... Are continuously press-fitted in a row (here, curved in an arc shape). In this case, as described above, the pile presser 1 is moved by one steel pipe pile 2 and the steel pipe pile 2 is press-fitted.

Next, the closing member attachment 4 is lifted by a crane or the like and inserted into the chuck device 15 of the pile press-in machine 1 on the steel pipe pile 2 so that the cylindrical main body 41 is gripped by the chuck device 15.
Next, as shown in FIG. 1 ( C ) and FIG. 3, the gripping portion 42 of the closing member attachment 4 gripped by the chuck device 15 is reduced in diameter and inserted into the steel pipe pile 2 that is finally press-fitted, and then the diameter is increased. The steel pipe pile 2 is gripped by the gripping part 42. In this state, by holding the closing member attachment 4 holding the steel pipe pile 2 with the chuck device 15, the pile press-in machine 1 can be supported on the steel pipe pile 2 via the closing member attachment 4.

Subsequently, the gripping of the steel pipe piles 2,... By the clamp devices 11,... Is released, and the chuck device 15 fixed to the steel pipe piles 2 via the closing member attachment 4 is moved downward with respect to the leader mast 14. Then, the clamp device 11, the saddle 12 and the like are raised.
Thereby, it will be in the state where clamp device 11, ... came out from steel pipe pile 2 upward. Next, the saddle 12 is moved backward (including the interval between the steel pipe piles 2) by one steel pipe pile 2 with respect to the slide base 13. Next, by lowering the saddle 12 and the clamp device 11 and the like, the clamp devices 11,... Are inserted into the steel pipe piles 2,. Grip.

  As a result, the pile press-in machine 1 has moved backward by one steel pipe pile 2 on the steel pipe piles 2. Next, by reducing the diameter of the gripping portion 42 and raising the chuck device 15, the gripping portion 42 is released from the steel pipe pile 2 while releasing the gripping of the steel pipe pile 2 by the gripping portion 42. Next, the position which becomes one side of the left and right between adjacent steel pipe piles 2 and 2 by the back-and-forth movement of the slide base 13 and the turning of the leader mast 14, here, the center of the adjacent steel pipe piles 2 and 2 Move the chuck device 15 to a position shifted to either one of the line segments connecting them (when the press-fitted steel pipe pile is used as a retaining wall, etc.) and move the chuck device 15 with a crane or the like. Lift and insert into the closure member attachment 4. At this time, the gripping portion 42 is expanded in diameter, and the closing member 3 is inserted between the first clamping portion 46 and the second clamping portion 47 as described above, and then the gripping portion 42 is reduced in diameter. The closing member 3 is gripped by the closing member attachment 4.

The angle in the direction of rotation around the axis of the closing member 3 can be adjusted by rotating the pile gripping portion 19 with respect to the outer peripheral portion of the chuck device 15. That is, the angle of the closing member 3 can be adjusted using a rotation mechanism used when the steel pipe pile 2 is rotationally press-fitted. And as shown in FIG.1 ( B ) and FIG. 4, by lowering the chuck apparatus 15 with the main hydraulic cylinders 16 and 16, the steel pipe piles 2 and 2 which adjoin two sides of the L-shaped obstruction | occlusion member 3 respectively. The closing member 3 is press-fitted so as to follow along.
That is, the press-fitting of the closing member 3 is performed in the same manner as the press-fitting of the steel pipe pile 2 except that the chuck device 15 is gripped via the closing member attachment 4 and the pile gripping portion 19 is not rotated during the press-fitting. . In addition, when the press-fitting of the closing member 3 for one stroke is finished, the gripping of the closing member 3 by the closing member attachment 4 is released without releasing the holding of the closing member attachment 4 by the chuck device 15. Next, the chuck device 15 is lowered while the closing member 3 is gripped by the closing member attachment 4.

  Moreover, since the lower end of the closure member attachment 4 will hit the steel pipe pile 2 when trying to make the height position of the upper end of the closure member 3 the same as the height position of the upper end of the press-fitted steel pipe pile 2, the closure member 3 When the height position of the steel pipe pile 2 is made the same, the plugging member 3 is pressed into a position where it can be press-fitted without being obstructed by the steel pipe pile 2 (or a position with a margin above it), and then the blockage is closed. The gripping of the closing member 3 by the member attachment 4 is released, and the chuck device 15 is raised to raise the closing member attachment 4 to a position higher than the upper end of the closing member 3. Next, the chuck device 15 is moved horizontally by turning the slide base 13 and the leader mast 14 so that the fixing portion 43 of the closing member attachment 4 is positioned directly above the closing member 3, for example. Then, by lowering the chuck device 15 by the main hydraulic cylinders 16, 16, the upper end of the closing member 3 is pressed downward by the fixing portion 43, the closing member 3 is further press-fitted, and the upper end of the closing member 3 is moved to the steel pipe pile 2. The same height as the top of the.

  Then, again, as shown in FIG. 5, the chuck device 15 is moved in the horizontal direction, and the closing member attachment 4 is moved onto the steel pipe pile 2 (the steel pipe pile 2 one after the previous steel pipe pile 2). The steel pipe pile 2 is gripped as described above. Next, by repeating the movement on the steel pipe piles 2,... To the rear side of the above-mentioned pile press-in machine 1 and the press-fitting of the closing member 3, all of the steel pipe piles 2,. The closing member 3 is press-fitted into.

In addition, when the steel pipe pile 2 is press-fitted so as to surround the ground in a quadrangular shape or a circular shape, in the case where there is a steel pipe pile 2 that has been press-fitted in front of the steel pipe pile 2 that has been finally press-fitted, You may make it push forward the obstruction | occlusion member 3 by making it advance, without making the pile press-in machine 1 retreat. Moreover, after moving the pile press-in machine 1 after the steel pipe pile 2 press-fit, the pile press-in machine 1 may be advanced on the steel pipe pile 2 to press-fit the closing member 3. That is, the pile presser 1 equipped with the closing member attachment 4 can be moved forward and backward on the pile, and when the closing member 3 is press-fitted, the pile presser 1 is moved backwards depending on the situation. May be.
Further, the closing member 3 is not limited to the L-shaped steel, and as shown in FIG. 6A, the closing member 3a made of H-type steel, the closing member 3b made of C-type steel, a pipe-shaped steel material (thin steel pipe) The closing member 3c made of
In addition, the holding part 42 can respond | correspond by changing the 1st and 2nd clamping parts 46 and 47, when the cross-sectional shape of the closure member 3 differs. For example, the first and second clamping portions 46a and 47a for the closing member 3a made of H-shaped steel have the same shape and have a narrower width than between the flanges of the H-shaped steel, so that the web is clamped from the left and right. Yes.

Similarly, the first and second sandwiching portions 46b and 47b for the closing member 3a made of C-shaped steel also sandwich the web from the left and right, but the length relationship between the first and second sandwiching portions 46b and 47b is L-shaped. It is the same as the case of steel.
Further, the first and second sandwiching portions 46c and 47c for the closing member 3a made of a pipe-shaped steel material are provided with arc-shaped contact plates corresponding to the outer periphery of the steel material at their tip portions.

  According to the closing member attachment 4 and the closing member press-fitting method as described above, it is possible to press-fit the steel pipe pile 2 and press-fit the closing member 3 with a single pile press-fitting machine 1, thereby reducing the cost. . Further, by using the closing member attachment 4, the pile presser 1 can self-propell the row of the steel pipe piles 2 ... in the state where the press-fitting is completed, and the pile presser 1 is inserted into the steel pipe piles 2, ... While moving in a row, the closing member 3 can be press-fitted each time it moves.

It is drawing for demonstrating the press-fitting method of the obstruction | occlusion member using the pile press-fit machine and obstruction | occlusion member attachment of embodiment of this invention. It is a top view which shows the holding part of a closure member attachment. It is drawing for demonstrating the press-fitting method of the said obstruction | occlusion member. It is drawing for demonstrating the press injection method of the said obstruction | occlusion member. It is drawing for demonstrating the press-fitting method of the said obstruction | occlusion member. It is a top view which shows the modification of the holding part of a closure member attachment.

Explanation of symbols

1 Pile press machine 11 Clamping device 13 Saddle (press machine main part)
15 Chuck device 2 Steel pipe pile (pile, cylindrical pile)
3 (3a, 3b, 3c) Closing member 4 Closing member attachment 41 Cylindrical main body 42 Gripping part

Claims (3)

When a plurality of piles are press-fitted continuously using a pile press-in machine that press-fits the piles by gripping and lowering the piles with a vertically movable chuck device, the adjacent press-fitted piles are closed. A closing member attachment for press-fitting the closing member using the chuck device of the pile press-in machine,
A cylindrical main body that can be gripped by the chuck device and can vertically penetrate the closing member;
A gripping part for gripping a closing member penetrating through the cylindrical main body part;
An occluding member attachment comprising: The pile is a cylindrical pile,
At least a part of the grip part is formed to be exposed below the lower end of the cylindrical main body part,
The gripping portion is capable of expanding and contracting the diameter,
Grasping the closing member by reducing the diameter in a state where the closing member is passed through the gripping part,
The closure member attachment according to claim 1, wherein the cylindrical pile is gripped by expanding the diameter in a state where at least a part of the gripping part is inserted into the cylindrical pile end portion. A method for press-fitting a closing member using a closing member attachment according to claim 1 or 2, wherein the closing member is press-fitted.
The chuck device of the pile press-fitting machine grips the blocking member attachment, and the blocking member attachment grips the blocking member, and the chuck device press-fits the blocking member between adjacent piles. A method for press-fitting an occluding member.

Images