JP2739284B2 - Joint part of PC wall pile and method of positioning joint part - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint of a PC wall pile and a method of positioning the joint.

[0002]

2. Description of the Related Art Conventionally, when constructing a long PC wall pile, the pile is divided and shortened, and the pile joints are welded by joining the end face joints of these piles and press-fitted as shown in FIG. The joining position 32 of the joint part 35 of the upper pile 30 and the lower pile 31 is set at the lower end of the chuck 34 of the pile press-in / pull-out machine 33, and the upper pile 30 is grasped by the chuck 34 of the pile press-in / pull-out machine 33, and the joining position 32
After adjusting the position and fixing the position, the joint part 35 is welded and the upper pile 3 is welded.
0 and the lower pile 31 were added and press-fitted.

[0003] However, when the ground is soft and the lower pile sinks, it is difficult to position the joints, and it takes time and labor. Therefore, as shown in FIG.
The lower pile 31 was grasped by the chuck 34 of No. 3 to prevent settlement, the joint position 32 of the pile was positioned at the upper part of the chuck 34, and the joints 35 of the upper and lower piles were welded together and press-fitted.

[0004]

However, when the lower pile is gripped by the chuck of the pile press-in / pull-out machine and the joint of the pile is positioned above the chuck, the upper pile to be added is gripped by the chuck. It is impossible to adjust the joint position of the upper pile joint part because it is impossible.

Therefore, the upper pile 20 is lifted by a crane or the like to operate the crane, and the position of the upper pile 20 is manually adjusted to match the joint of the lower pile, but it requires a great deal of labor and time and is inefficient. It was not only accurate but also dangerous. SUMMARY OF THE INVENTION An object of the present invention is to provide a joint portion of a PC wall pile and a method of positioning the joint portion, which can facilitate alignment of a joint portion between upper and lower piles.

[0006]

In order to achieve the above-mentioned object, the present invention according to claim 1 comprises an L-shaped fitting which is bent at a right angle, a linear I-shaped fitting, and a U-shaped fitting. The mounting screws for connecting and detachably attaching the PC wall pile to the outer periphery of the side wall of the PC wall pile.
A tapered guide piece for guiding the end of the other PC wall pile and aligning it with the existing pile is protruded in the longitudinal direction of the wall of the PC wall and the I-shaped bracket. The joint according to claim 2, wherein the joint of the existing pile is protruded from the upper edge of the chuck, and the existing joint is secured by the chuck of the pile press-in / pull-out machine. After grabbing, before
Inside the positioning cylinder provided on the upper edge of the chuck
Then, insert a pile to be added, and attach the lower end joint of the pile to the
It is characterized in that a positioning method of the joint portion of the PC wall pile is configured in which the joint position of the joint portion is adjusted by the positioning cylinder .

[0007]

According to the first aspect, a mounting bracket provided with a guide piece.
Is detachably attached to the end of the pile, and the pile to be added
And the joining position can be determined. Weld the pile
After that, remove the mounting bracket and press-fit the pile . Also, in claim 2
At first, insert a pile to be added to the upper end of the chuck,
A positioning syringe provided on the upper edge of the chuck on the outer periphery of the lower end of the pile
The joints are aligned by joining the joints. This position
It is safe because the adjustment is performed by the cylinder and does not require any labor
It is .

[0008]

Embodiment An embodiment of the present invention will be described with reference to the drawings together with a reference example for explanation. The first explanatory reference example metallic seat plate 2 on the lower end portion of the PC wall pile 1 was formed into a prismatic shape by embedding the PC steel wire and rebar in the concrete mounting as shown in FIGS. 1 and 2 A metal reinforcing band 3 for reinforcing an end portion is provided on the outer periphery of the metal seat plate 2. The PC is in the wall of pile 1 the lower end of the metallic seat plates 2 are arranged in a projecting manner a knock pin 4, engagement Goana 5 to the metal seat plate 2 PC wall piles 1 upper that match fitting said knock pin 4 Is provided. Instead of providing the knock pin 4 on the metal seat plate 2 at the lower end, the knock pin 4 may be provided on the metal seat plate 2 on the upper end, and the engaging hole 5 into which the knock pin 4 fits may be provided on the metal seat plate 2 on the lower end. .

In order to add the PC wall pile 1 having the joint portion 25 formed by providing the knock pin 4 and the engagement hole 5 in the metal seat plate 2 as described above, the existing PC is inserted by the chuck of the pile press-in / pull-out machine.
The wall pile 1 is gripped, and the joint position of the joint 25 is set such that the upper joint 25 is located above the chuck.
As described above, the existing pile is gripped by the chuck, and the joining position of the joint is positioned above the chuck, so that it is easy to weld the joint and the lower pile is pressed into the soft ground. In this case, there is no danger of sinking.

Next, the PC wall pile to be added is lifted by a crane or the like, carried to the upper part of the existing pile, the joining positions of the upper and lower joints 25 are adjusted, and the knock pin 4 of the metal seat plate 2 at the lower end is adjusted.
Is fitted into the engaging hole 5 of the seat plate 2 at the upper end of the existing PC wall pile 1 to determine the joining position. Once the knock pin 4 and the engagement hole 5 are fitted, the joint does not come off. After the joint portions 25 are butted in this manner, the outer peripheral portion of the metal seat plate 2 is welded to complete the pile addition.

[0011] The second explanatory reference shown in FIGS. 3 and 4
In the example , the ridge 10 is engaged with the metal seat plate 2 at the lower end of the PC wall pile 1.
The engaging groove 11 into which the engaging ridge 10 is fitted is provided on the metal seat plate 2 at the upper end. In this embodiment, the engaging ridges 10 and the engaging grooves 11 are formed in the hollow portions 12 of the PC wall pile 1.
Is provided from the periphery of the pile to the outer edge of the pile, but may be shorter. Further, it may be provided diagonally on the seat plate surface.

The third explanatory reference shown in FIGS. 5 and 6.
An example is the outer periphery of the reinforcing band 3 provided at the upper end of the PC wall pile 1,
Several guide pieces 13 provided with guide taper portions at the inner upper end are mounted at predetermined intervals. The lower portion of the guide piece 13 is fixed to the reinforcing band 3 by welding or the like, and the upper portion projects upward from the upper surface of the metal seat plate 2. The joining position is fixed securely.

[0013] The PC having the joint portion configured as described above.
In order to add the wall pile, the PC wall pile 1 to be added is lifted by a crane or the like, carried to the upper part of the existing pile, and the upper and lower joint portions 25 are aligned in the same manner as in the second reference example .
Connect the lower joint part 25 to the guide piece 13 at the upper end of the existing PC wall pile 1
To determine the joining position. Once the lower end joint 25 and the guide piece 13 are fitted, the joint does not come off. After the joint portions 25 are butted in this manner, the metal seat plate 2
The outer periphery of the pile is welded to complete the pile addition.

FIGS. 7 and 8 show an embodiment of the first invention .
The inside of a mounting bracket 8 composed of an L-shaped bracket 6 and an I-shaped bracket 7 formed along the outer periphery of the PC wall pile 1, several guides provided with a guide taper portion at the inner upper end are provided. Guide piece 13
Are attached at predetermined intervals. A mounting screw 9 attached to the end of the I-shaped bracket 7 is screwed into the end of the L-shaped bracket 6 to assemble into a U-shape, and attached to the upper outer periphery of the PC wall pile 1.

The mounting is performed such that the upper end of the guide piece 13 protrudes from the upper surface of the metal seat plate 2 and the joint 25 at the lower end of the pile to be added is received inside the guide piece 13 and the joint position of the joint 25 is set. Attach it so that

In order to add a new pile to the existing PC wall pile 1 provided with the joint portion 25 constructed as in the present embodiment, first, the existing PC wall pile is gripped by a chuck, and the PC to be extended is added.
The wall pile is lifted and transported by a crane or the like, and the lower end joint 25 of the pile is lowered so as to fit inside the guide piece 13. When the joint 25 at the lower end is fitted inside the guide piece 13, the outer peripheral surface of the pile is prevented from moving by the guide piece 13 and the joining position is determined without displacement. Thereafter, the mounting pile 8 can be removed and the connected piles can be press-fitted.

A fourth illustrative reference shown in FIGS. 9 to 11
In the example , each rectangular piece 26 having the working window 15 is bent and connected to each other by the hinge 16 to form a strip-shaped mounting bracket 17 having a length corresponding to the outer peripheral length of the PC ambassador pile 1. I have. The belt-like mounting bracket 17 has a mounting screw 18 at one end and a forked portion 19 at the other end. By attaching the mounting screw 18 attached to the end to the bifurcated portion 19 and tightening the mounting screw 18, the strip-shaped mounting bracket 17 can be removably mounted on the upper outer periphery of the PC wall pile.

As shown in FIG. 10, when the band-shaped mounting member 17 is mounted on the upper part of the PC wall pile 1, the joint portion 25 of the metal seat plate 2 of the pile is welded from the work window 15 of the rectangular piece 26. So that you can do it. As a result, the pile to be added is guided by the upper peripheral edge of the band-shaped mounting bracket 17, and the joint portion 25 of the metal seat plate of the pile fitted into the mounting bracket 17 is located substantially in the middle of the working window 15, so that the working window 15 is mounted. Can be easily welded through. After the joint 25 is welded and the pile is added, the strip-shaped mounting bracket 17 may be removed and the PC wall pile may be press-fitted.

FIGS. 12 and 13 show the second embodiment of the present invention.
In the embodiment, the chuck 22 of the pile press-in / pull-out machine 33 used for determining the position of the joint portion 27 when the PC wall pile 24 is added. The chuck 22 has a gripping mechanism (not shown) for gripping the PC wall pile inside, and has several positioning cylinders 20 at an appropriate interval on the upper edge 23. The positioning cylinder 20 is configured so that the cylinder rod 20a is brought into contact with the outer periphery of the lower end joint portion 27 of the pile to be added and the joining position of the joint portion 27 is adjusted.

The PC wall pile 2 is placed above the existing PC wall pile 21.
To add 4, first, the existing PC wall pile 21 is gripped by the chuck 22. At this time, the upper end joint 25 of the existing pile 21 is made to protrude from the upper edge 23 of the chuck 22. Next, the PC wall pile 24 to be added to the pile is lifted and transported by a crane or the like, and the lower end joint portion 27 of the pile 24 is lowered so as to fit inside the positioning cylinder 20 of the chuck 22.

Thereafter, the positioning cylinder 20 is actuated and the tip of the cylinder rod 20a is brought into contact with the lower peripheral surface of the PC wall pile 24 to adjust the joining position.
The joint positions are determined by matching the joint portions 27 and 25 of No. 1 with each other. Thereafter, the outer periphery of the abutted joint is welded to complete the extension. Since the positioning is performed by the positioning cylinder 20 provided on the chuck 22, the work can be performed safely without causing any danger to the operator, and the work efficiency is improved.

[0022]

According to the joint portion of the present invention configured as described above, after the engaging portion of the joint portion is fitted, the pile does not move,
Since the fitting state can be maintained, there is no need to manually support the pile until welding of the joint portion is completed. Therefore, welding work can be performed smoothly and safely, and work efficiency is improved. According to the positioning method of the present invention, the worker does not support the pile,
Since the joint position of the pile joint is aligned with the chuck positioning cylinder, welding work can be performed quickly and safely, and work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a side view of a first illustrative reference example .

FIG. 2 is a bottom view of the first illustrative reference example ;

FIG. 3 is a side view of a second reference example for explanation .

FIG. 4 is a bottom view of the second illustrative reference example ;

FIG. 5 is a side view of a third illustrative reference example ;

FIG. 6 is a plan view of a third illustrative reference example ;

FIG. 7 is a side view of the embodiment of the first invention .

FIG. 8 is a plan view of the embodiment of the first invention .

FIG. 9 is an exploded side view of a fourth illustrative reference example .

FIG. 10 is a side view showing the fourth illustrative reference example mounted on a pile.

FIG. 11 is a plan view showing the fourth illustrative reference example mounted on a pile.

FIG. 12 is a plan view of a positioning chuck according to an embodiment of the second invention .

FIG. 13 is a side view of the positioning chuck according to the embodiment of the second invention;

FIG. 14 is a side view illustrating a conventional pile joining position.

FIG. 15 is a side view illustrating a conventional pile joining position.

[Explanation of symbols]

 1, 24 PC wall pile 2 Metal seat plate 3 Metal reinforcing band 4 Dowel pin 5 Engagement hole 6 L-shaped metal fitting 7 I-shaped metal fitting 8, 14, 17 Mounting metal fittings 9, 18 Mounting screw 10 Engagement ridge DESCRIPTION OF SYMBOLS 11 Engagement groove 12 Hollow part 13 Guide piece 15 Working window 16 Hinge 19 Forked part 20 Positioning cylinder 21 Existing PC wall pile 22 Chuck 23 Upper edge 25, 27, 35 Joint part 30 Upper pile 31 Lower pile 32 Joining position 33 Pile press-in and pull-out machine 34 Chuck

Claims (2)

(57) [Claims] 1. An L-shaped fitting bent at a right angle and a straight
While connecting the I-shaped bracket and these two in a U-shape
Removably attached to the outer periphery of the PC wall pile across the side
The L-shaped bracket and the I-shaped
In the shape bracket, guide the end of the other PC wall pile to the existing pile.
Guide the tapered guide piece for positioning to the length of the pile.
Joint part of PC wall pile protruding in hand direction . 2. The method according to claim 1, further comprising: gripping the existing pile with a chuck of an anti-press-in / draw-out machine so that a joint portion of the existing pile projects from an upper edge of the chuck;
Insert a reinforcer into the inside of the
A method of positioning a joint portion of a PC wall pile, wherein a joint portion of a joint portion of a hand portion is adjusted by the positioning cylinder .