JPS6122093B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for driving steel pipe piles (including not only perfectly circular but also triangular, square, and other polygonal tubular piles) into the ground. This relates to a steel pipe pile driving device that is used to drive piles or pull them out of the ground.

[Conventional technology]

A conventional steel pipe pile driving device includes a base, a vibrator mounted on the base to generate vertical vibrations, and a chuck mounted on the base to clamp the top end of the steel pipe pile. Next, the operation will be explained. First, the top end of a steel pipe pile is held by a chuck, a vibration exciter is driven, and the vertical vibration generated by the vibration machine is transmitted to the steel pipe pile via the chuck, and the steel pipe pile is inserted into the ground. Drive it in or pull it out of the ground.

[Problem that the invention seeks to solve]

However, since conventional steel pipe pile driving equipment directly clamps the top end of the steel pipe pile with a chuck, the steel pipe pile is crushed and deformed, causing problems in the strength and reliability of the steel pipe pile. In particular, if the steel pipe pile is long, a large-capacity exciter and a large chuck are required. It is crushed and deformed, and the deformation is noticeable.

An object of the present invention is to provide a steel pipe pile driving device that can prevent steel pipe piles from being crushed and deformed.

[Means for solving problems]

The invention set forth in claim 1 (hereinafter referred to as 1st claim)
It is called the invention of ) consists of a clamped member fixed to the outer circumferential surface of the steel pipe pile in the axial direction of the steel pipe pile, a base with a cavity through which the steel pipe pile and the clamped member can penetrate in the axial direction of the steel pipe pile, and a base that is mounted on the base. a vibration exciter that generates vibrations in the vertical direction; and a chuck that is attached to the edge of the cavity of the base through which the member to be clamped passes through, and that clamps the member to be clamped in a direction perpendicular to the direction in which the member to be clamped passes through the base. It is characterized by having the following.

In addition, the invention recited in claim 5 (hereinafter referred to as the second invention) includes a clamped member fixed to the inner peripheral surface of the steel pipe pile in the axial direction of the steel pipe pile, and a member that penetrates into the steel pipe pile. A base with a flexible shape, an exciter mounted on the base that generates vibration in the vertical direction,
The chuck is attached to the base and clamps a member to be clamped in a direction perpendicular to the axial direction of the steel pipe pile.

[Effect]

In the first invention, by clamping a clamped member fixed to the outer peripheral surface of the steel pipe pile with a chuck, the steel pipe pile can be driven or pulled out without directly clamping the steel pipe pile. Moreover, by penetrating the steel pipe pile and the member to be clamped through the hollow space of the base and clamping the member to be clamped by the chuck, it is possible to clamp the member to be clamped not only at the top end of the steel pipe pile but also at the intermediate part.

In addition, the second invention is such that the clamped member fixed to the inner circumferential surface of the steel pipe pile is clamped with a chuck.
Steel pipe piles can be driven or pulled out without directly holding the steel pipe piles. Moreover, by penetrating the base into the steel pipe pile and clamping the member to be clamped by the chuck, it is possible to clamp the member to be clamped not only at the top end of the steel pipe pile but also at the intermediate part.

〔Example〕

Hereinafter, four examples of the embodiments of the steel pipe pile driving apparatus of the first invention and one embodiment of the steel pipe pile driving apparatus of the second invention will be described with reference to the accompanying drawings.

Figures 1 to 5 show a first embodiment of the steel pipe pile driving device of the first invention, Figures 1 and 2 are front and side views showing the state of use, and Figure 3 is a The arrow direction view in FIG. 2, and FIGS. 4 and 5 are the arrow direction view and the arrow direction view in FIG. 3.

The steel pipe pile driving device of the first invention in this embodiment has a clamped member 5 fixed to the outer peripheral surface of the steel pipe pile 4.
The apparatus includes a base 1, an exciter 2 mounted on the base 1, and a chuck 3 mounted on the base 1.

The base 1 has a rectangular parallelepiped shape, and has an upper plate 10.
It consists of a lower plate 11, a middle plate 12, and a side plate 13. A circular through hole 14 through which the steel pipe pile 4 can pass is provided on the left and right sides of the base 1, and two strips protruding from the outer peripheral surface of the steel pipe pile 4 in a 180° direction are provided at the edges of the through hole 14. The first notch 15 through which the rib 40 can pass
are arranged in a row in the longitudinal direction of the base, and the through hole 1
A second notch 16 is formed in the base through which two blade-shaped clamped members 5 fixed on the outer peripheral surface of the steel pipe pile 4 at right angles to the ribs 40 and in a 180° direction are formed on the edge of the base. Provided in the short direction.

The vibration exciter 2 is a normal vibration exciter, and has an eccentric weight (not shown) supported inside the main body 20.
A drive motor 21 is mounted on the main body 20, and the drive motor 21 and an eccentric weight are linked together, and by driving the drive motor 21, the eccentric weight rotates and vertical vibration can be generated. Configure. The vibrator 2 thus constructed is mounted and fixed in the center of the upper plate 10 of the base 1, that is, in a place where it does not get in the way of the steel pipe pile 4 passing through the through hole 14 and the like.

The chuck 3 fixes the fixed clamping member 30 facing the outer edge of the second notch 16 of the base 1 with a pin 31, and the movable clamping member 3
2 facing the inner edge of the second notch 16 of the base 1 and facing the fixed clamping member 30, the cylinder 33 and the arm 34 are arranged in the direction of the arrow (the direction of penetration of the clamped member 5 (i.e., the direction of penetration of the clamped member 5 (i.e., the steel pipe pile 4 The fixed clamping member 30 is mounted so as to be movable in a direction perpendicular to the axial direction of the fixed clamping member 30 and in a direction opposite to the fixed clamping member 30. That is, the base of the cylinder 33 is pivoted to the side plate 13 of the base 1 by a pin 35 so that the direction of movement of the piston rod 36 coincides with the facing direction of the fixed clamping member 30, while one end (lower end) of the arm 34 is attached to the side plate 13 of the base 1.
It is rotatably attached to the lower plate 11 with a pin 37,
The other end (upper end) of the arm 34 and the cylinder 3
The tip of the piston rod 36 of No. 3 is rotatably attached by a pin 38. When the piston rod 36 of the cylinder 33 is moved forward, the movable clamping member 32 moves in the direction of the arrow via the arm 34, and the movable clamping member 32 and the fixed clamping member 30 move the clamped member 5 in the penetrating direction of the clamped member 5. (i.e. steel pipe pile 4
clamp in a direction perpendicular to the axial direction). Also,
When the piston rod 36 of the cylinder 33 is moved backward, the movable clamping member 32 moves in the opposite direction of the arrow via the arm 34, and the clamping of the movable clamping member 32 and the fixed clamping member 30 to the clamped member 5 is released. .

On the other hand, the steel pipe pile 4 has two reinforcing or connecting ribs 40 extending in the 180° direction (diameter direction of the steel pipe pile 4) and in the axial direction of the steel pipe pile 4 on its outer peripheral surface. To protrude.

The clamped member 5 has a wing plate shape similar to the rib 40 described above, and is attached to the outer peripheral surface of the steel pipe pile 4 at right angles to the two ribs 40 and in a direction of 180° (the diameter of the steel pipe pile 4). direction), and further extending in the axial direction of the steel pipe pile 4. The two clamped members 5 do not necessarily need to be provided extending over the entire length of the steel pipe pile 4 in the axial direction, and may be provided piecemeal in a plate shape at appropriate points on the steel pipe pile 4.

The steel pipe pile driving device of the first invention in this embodiment has the above-described configuration, and driving and pulling out of the steel pipe pile will be explained below.

First, the steel pipe pile driving device of the present invention, which is composed of a base 1, an exciter 2, and a chuck 3, is mounted on the leader 60 of a crane vehicle 6 so as to be able to rise and fall, and is suspended via a shock absorber 61. The steel pipe pile driving device is raised to the required height relative to the leader 60 of the crane vehicle 6. Next, the main bodies of the two steel pipe piles 4, the ribs 40, and the clamped member 5 of the present invention are separately inserted into the spaces formed by the through holes 14, the first notches 15, and the second notches 16 on both the left and right sides of the base 1. A crane (not shown) is used to erect and penetrate the pile, and then the cylinders 33 of the four chucks 3 are operated, and the fixed clamping member 30 and the movable clamping member 32 are used to erect two strips of each of the two steel pipe piles 4. The clamping members 5 are clamped respectively.

The clamping location of the clamped member 5 may be either the top end or the middle of the steel pipe pile 4, and is appropriately determined depending on the length of the steel pipe pile 4 to be driven.

As described above, the two steel pipe piles 4 held by the chuck 3 of the steel pipe pile driving apparatus of the present invention are positioned at predetermined driving positions, and then the exciter 2 is driven. Then, the vertical vibration generated by the exciter 2 is transmitted to the steel pipe pile 4 via the base 1, the chuck 3, and the supported member 5, and in this state, the steel pipe pile driving apparatus of the present invention is transferred to the leader 60. By lowering the steel pipe piles 4 along the ground, the two steel pipe piles 4 are driven into the ground by the above-mentioned vertical vibration. Conversely, if the steel pipe pile driving device of the present invention is raised along the leader 60 while driving the vibrator 2, the steel pipe pile 4 driven into the ground can be pulled out due to the above-mentioned vertical vibration. I can do it.

At this time, the steel pipe pile driving device of the first invention in this embodiment clamps the clamped member 5 fixed to the outer peripheral surface of the steel pipe pile 4, and transmits vertical vibrations to the steel pipe through the clamped member 5. Transmitted to pile 4 and steel pipe pile 4
Since the steel pipe pile 4 is driven into the ground or pulled out from the ground, there is no risk of deformation of the steel pipe pile 4, unlike the method of driving the steel pipe pile 4 by directly clamping it, and therefore the strength and reliability are improved. No problem.

Further, the steel pipe pile driving device of the first invention in this embodiment has a hollow space (through hole 1
4, a first notch 15, and a second notch 16. ), and the chuck 3 is attached to the edge of the hollow space, so that it is possible to clamp not only the top end of the steel pipe pile 4 but also the member to be clamped 5 in the middle part. Therefore, even if the height of the leader 60 is not high, the long steel pipe pile 4 can be driven (driven in or pulled out).

FIG. 6 is a plan view showing a second embodiment of the steel pipe pile driving device of the first invention.

The steel pipe pile driving device of the first invention in this embodiment has a circular through hole 14A that can be penetrated by the steel pipe pile 4A at the center of the base 1A, and an outer circumference of the steel pipe pile 4A at the edge of the through hole 14A. Notch 16 through which the clamped member 5A fixed to the surface in a 180° direction can pass through.
A is provided in the lateral direction of the base 1A. The base 1
Two exciters 2A are mounted on the left and right sides of A, and these two exciters 2A are linked via a timing gear 22A and a universal joint 23A. The structure is such that vibrations in the vertical direction can be generated in conjunction with each other. A fixed clamping member 30A of the chuck 3A and a movable clamping member 32A are attached to opposite sides of the notch 16A of the base 1A via a cylinder 33A.

The steel pipe pile driving device of the first invention in this embodiment differs from the above-mentioned first embodiment in which two steel pipe piles 4 are driven with one exciter 2. One steel pipe pile 4A is driven by a shaker 2A. In addition, the steel pipe pile driving device of this embodiment, like the one of the above-mentioned first embodiment, has a cavity in the base 1A through which the steel pipe pile 4A can penetrate, and also has a chuck 3A on the edge of the cavity. Since the steel pipe pile 4A is installed, the middle part of the steel pipe pile 4A can be clamped, and therefore a long steel pipe pile 4A can be driven even if the length of the leader is not long. Moreover, since the member to be held 5A is held, deformation of the steel pipe pile 4A can be prevented.

FIG. 7 is a front view showing a third embodiment of the steel pipe pile driving apparatus of the first invention, and FIG. 8 is a sectional view taken along the line -- in FIG. 7.

The steel pipe pile driving device of the first invention in this embodiment has a base 1B formed in a U-shape and a steel pipe pile 4
A recess 17B is provided through which B can be inserted and removed, and a steel pipe pile 4 is provided at the opposite edge of the recess 17B.
A notch 16B is provided on the outer peripheral surface of B through which two clamped members 5B fixed at 180 degrees can pass through. The exciter 2B is composed of a main body 20B with an eccentric weight (not shown) supported on both left and right sides of the base 1B, and a drive motor 21B linked to the eccentric weight.
At the same time, these two exciters 2B are connected to the timing belt 22B and the universal joint 2.
Link via 3B. Notch 1 of the base 1B
Fixed clamping members 30 of chuck 3B are attached to both sides of 6B.
B and the movable clamping member 32B are mounted so as to face each other via the cylinder 33B and arm 34B.

The steel pipe pile driving device of the first invention in this embodiment has a base 1B formed in a U-shape and a steel pipe pile 4
By providing a space through which the leader B can penetrate, and by attaching the chuck 3B to the edge of the space, it is possible to clamp the middle part of the steel pipe pile 4B. A steel pipe pile 4B can be driven. Moreover, since the member to be held 5B is held, deformation of the steel pipe pile 4B can be prevented. Moreover, since the base 2B is formed into a U-shape with an opening on one side, the steel pipe pile 4B can be attached and detached from there, so even if the steel pipe pile 4B gets stuck in the middle for some reason, it can be removed. , Steel pipe pile 4 which is installed at a high height by the steel pipe pile driving device of the present invention without dismantling the base 1B etc.
It can be removed from B.

FIG. 9 is a front view showing a fourth embodiment of the steel pipe pile driving apparatus of the first invention, and FIG. 10 is a sectional view taken along the line X--X in FIG. 9.

The steel pipe pile driving device of the first invention in this embodiment is similar to that of the third embodiment described above, with the base 1C formed in a U-shape so that the steel pipe pile 4C can penetrate and be detached. In addition to providing a recessed portion 17C to obtain
A notch 16C is provided in the longitudinal direction of the base 1C on opposite edges of the recessed portion 17C through which a clamped member 5C fixed to the outer peripheral surface of the steel pipe pile 4C in a 180° direction can pass. Two exciters 2C are mounted on the left and right sides of this base 1C, and these two exciters 2
C are linked via a timing belt 22C and a universal joint 23B. On the other hand, two chuck attachment bodies 7C are attached to the lower surface of the left and right sides of the base 1C by bolts and nuts 70C so as to be movable in the longitudinal direction of the base 1C. That is, a required number of elongated holes 18C are provided in the lower plate 11C of the base 1C in the longitudinal direction of the base 1C, and a through hole 72C is provided in the upper plate 71C of the chuck mounting body 7C facing the elongated holes 18C. By aligning the through hole 72C with the elongated hole 18C and tightening the bolt/nut 70C, the chuck mounting body 7C can be fixed to the base 1, and by loosening the bolt/nut 70C, the chuck mounting body 7C can be fixed. Longitudinal direction of base 1C with respect to base 1C (supported member 5C fixed to steel pipe pile 4C)
can be moved in the protruding direction).

A notch 73C through which the clamped member 5C can pass is provided on opposing edges of the two chuck attachment bodies 7C, corresponding to the notch 16C of the base 1C, and a fixed clamping member 30C of the chuck 3C is provided on both side edges of the notch 73C. and a movable clamping member 32C are mounted facing each other via a cylinder 33C and an arm 34C.

The steel pipe pile driving device of the first invention in this embodiment is similar to that of the third embodiment described above, in which the base 1C is formed into a U-shape to provide a space through which the steel pipe pile 4C can penetrate. At the same time, since the chuck 3C is attached to the edge of the empty space, it is possible to clamp the middle part of the steel pipe pile 4C, and therefore, even if the leader length is not long, it is possible to drive a long steel pipe pile 4C. can. Further, since the member to be held 5C is held, deformation of the steel pipe pile 4C can be prevented. Moreover, since the base 2C is formed into a U-shape with an opening on one side, the steel pipe pile 4C can be attached and detached from there.
Therefore, even if the steel pipe pile 4C becomes too high, the steel pipe pile driving device of the present invention can be removed from the steel pipe pile 4C that becomes too high. Furthermore, since the chuck 3C is attached to the base 1C via the chuck attachment body 7C so as to be movable in the protruding direction of the clamped member 5C fixed to the steel pipe pile 4C, it can be adjusted to match the diameter of the steel pipe pile 4C to be driven. You can move chuck 3C by
Therefore, steel pipe piles 4C having different diameters can be driven, and the system is highly versatile.

In this embodiment, the base 1C has a long hole 18C, while the chuck mounting body 7C has a through hole 72C.
However, on the contrary, a through hole may be provided in the base 1C, and a long hole may be provided in the chuck mounting body 7C. Further, long holes or through holes may be provided in both.

Furthermore, the chuck mounting body 7 in this embodiment
The means for moving and fixing C is a bolt/nut 70C, but it may also be a hydraulic cylinder, an air cylinder, a screw, or the like.

FIG. 11 and FIG. 12 are a partially cutaway plan view and a front view showing an embodiment of the steel pipe pile driving device of the second invention.

The steel pipe pile driving device of the second invention in this embodiment has a base 1D formed in a rectangular shape so that it can be inserted into a steel pipe pile 4D, and a steel pipe pile installed in the center of both ends (short sides) of the base 1D. A notch 16 through which two clamped members 5D fixed in the 180° direction (radial direction) on the inner peripheral surface of the steel pipe pile 4D and in the axial direction of the steel pipe pile 4D can pass through.
Provide D. One exciter 2D is mounted on the center of the upper surface of the base 1D, which is composed of a main body 20D bearing an eccentric weight (not shown) and a drive motor 21D linked to the eccentric weight. Notch 16 in the base 1D
Fixed clamping member 30D with chuck 3D on both sides of D
and movable clamping member 32D are mounted facing each other via cylinder 33D and arm 34D.

The steel pipe pile driving device of the second invention in this embodiment has the above-described configuration, and driving and pulling out of the steel pipe pile will be explained below.

First, the steel pipe pile driving device of the present invention is raised to a predetermined height using a crane or a leader, and the base 1D of the device is inserted into the steel pipe pile 4D, and the inside of the steel pipe pile 4D is inserted into the notch 16D of the base 1D. A clamped member 5D fixed to the circumferential surface is penetrated, and the clamped member 5D is clamped by the chuck 3D. Then, by driving the vibrator 2D, vertical vibrations are transmitted to the steel pipe pile 4D via the base 1D, chuck 3D and clamped member 5D,
Due to this vertical vibration, the steel pipe pile 4D is driven into the ground or pulled out from the ground. At this time, the clamped member 5D fixed to the inner circumferential side of the steel pipe pile 4D is clamped, and vertical vibration is transmitted to the steel pipe pile 4D via the clamped member 5D, so the steel pipe pile 4D is directly connected to the clamped member 5D. Unlike the method of clamping and driving, there is no risk of the steel pipe pile 4D being deformed, and therefore there is no problem with strength or reliability.
Further, the steel pipe pile driving device of the second invention in this embodiment has a base 1D that can be inserted into the steel pipe pile 4D.
Since the notch 16D is provided in which the clamped member 5D of the steel pipe pile 4D can be inserted, and the chuck 3D is attached to the notch 16D, the middle part of the steel pipe pile 4D can be clamped. Steel pipe pile 4D
can be poured.

In this embodiment, the chuck 3D can be mounted movably on the base 1D in the radial direction of the steel pipe pile 4D, that is, in the protruding direction of the clamped member 5D.

〔Effect of the invention〕

As is clear from the above, in the first invention, since the member to be clamped is fixed to the outer peripheral surface of the steel pipe pile, by clamping the member to be clamped with the chuck, the steel pipe pile can be cast or pulled out. Therefore, deformation of the steel pipe pile can be prevented. Moreover, since the base has a space through which the steel pipe pile and the member to be supported can pass, the steel pipe pile and the member to be supported can pass through the space in the base, and the chuck can hold the member to be supported. It is possible to clamp the member to be clamped not only at the top end but also at the middle part. Therefore, a long steel pipe pile can be driven or pulled out even without the height of a support such as a leader.

Further, in the second invention, since the clamped member is fixed to the inner peripheral surface of the steel pipe pile, by clamping the clamped member with the chuck, the steel pipe pile can be driven or driven without directly clamping the steel pipe pile. You can pull it out. Therefore, deformation of the steel pipe pile can be prevented. Moreover, since the base has a shape that can be inserted into the steel pipe pile, by inserting the base into the steel pipe pile and clamping the clamped member with the chuck, the clamped member can be clamped not only at the top end of the steel pipe pile but also at the middle part. Can hold parts together. Therefore, large diameter steel pipe piles can be driven or pulled out.

Note that, as a matter of course, the steel pipe pile driving method or steel pipe pile driving apparatus of the present invention is not limited to the above-mentioned embodiments.

[Brief explanation of the drawing]

Figures 1 to 5 show a first embodiment of the steel pipe pile driving device of the first invention, Figures 1 and 2 are front and side views showing the state of use, and Figure 3 is a The arrow direction view in FIG. 2, and FIGS. 4 and 5 are the arrow direction view and the arrow direction view in FIG. 3. Figure 6 shows the second steel pipe pile driving device of the first invention.
FIG. FIG. 7 is a front view showing a third embodiment of the steel pipe pile driving apparatus of the first invention, and FIG. 8 is a sectional view taken along the line -- in FIG. 7. FIG. 9 is a front view showing a fourth embodiment of the steel pipe pile driving apparatus of the first invention, and FIG. 10 is a sectional view taken along the line -- in FIG. FIG. 11 and FIG. 12 are a partially cutaway plan view and a front view showing an embodiment of the steel pipe pile driving device of the second invention. 1, 1A, 1B, 1C, 1D...Base, 14
...Through hole, 16, 16A, 16B, 16C, 16
D, 73D...notch, 17B, 17C...recess,
2, 2A, 2B, 2C, 2D... exciter, 3, 3
A, 3B, 3C, 3D...Chick, 4, 4A,
4B, 4C, 4D...Steel pipe pile, 5, 5A, 5B,
5C, 5D... members to be held.

Claims (1)

[Scope of Claims] 1. A clamped member fixed to the outer peripheral surface of the steel pipe pile in the axial direction of the steel pipe pile, and a base provided with a space through which the steel pipe pile and the clamped member can penetrate in the axial direction of the steel pipe pile; A vibrator is mounted on the base and generates vibrations in the vertical direction, and a vibrator is installed on the edge of the cavity of the base through which the held member passes through, and the held member is mounted in a direction perpendicular to the direction in which the held member passes through. A steel pipe pile driving device characterized by comprising a chuck that clamps a chuck. 2. Claim 1, characterized in that the hollow space in the base consists of a through hole through which the steel pipe pile can pass, and a notch through which the clamped member can penetrate, which is connected to the edge of the through hole. steel pipe pile driving equipment. 3. A patent claim characterized in that the hollow space in the base consists of a recess through which a steel pipe pile formed in the U-shape of the base can pass, and a notch through which a clamped member connected to the edge of the recess can pass through. The steel pipe pile driving device according to item 1. 4. The steel pipe pile driving device according to claim 1, 2 or 3, wherein the chuck is mounted so as to be slidable with respect to the base. 5. A clamped member fixed to the inner circumferential surface of the steel pipe pile in the axial direction of the steel pipe pile, a base shaped to penetrate into the steel pipe pile, and a vibration exciter mounted on the base to generate vibration in the vertical direction. and a chuck attached to the base to clamp a member to be clamped in a direction perpendicular to the axial direction of the steel pipe pile. 6. The steel pipe pile driving device according to claim 5, wherein the chuck is mounted so as to be slidable with respect to the base.