JP2006348592A - Pile core control tool, and pile core control method using pile core control tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pile core control tool which allows easy alignment of pile cores. <P>SOLUTION: A pair of bars 1a, 1b, which are pivoted to open/close freely, are arranged to be fixed together at almost right angles to each other. A pile core bar hole 11, into which a pile core bar 2 is inserted, is formed on the corner of the bars 1a, 1b fixed at almost right angles. A clearance core bar hole 12, into which a clearance core bar 3 is inserted, is formed on the bar 1a and on the bar 1b, where each clearance core bar hole 12 is located at the same distance from the pile core bar hole 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pile core management jig and a pile core management method using the pile core management jig, and in particular, a pile core management jig and a pile core management jig that can easily align the pile core. It relates to the used pile core management method.

  Conventionally, when building ready-made piles, an auger screw excavation head is set at the pile core position of the ground, excavation is performed while checking the verticality, and after pulling out the auger screw, the ready-made piles are built.

  By the way, in the above-mentioned conventional method, there are many cases where pile core misalignment has already occurred at the time of setting the auger screw excavation head, and the first 2 to 3 m from the beginning of excavation are affected by obstacles etc. There is a risk of misalignment of the drill core.

  In view of the problems of the conventional pile core management jig, the present invention provides a pile core management jig capable of easily aligning the pile core and a pile core management method using the pile core management jig. The purpose is to provide.

  In order to achieve the above object, the pile core management jig according to the first aspect of the present invention is provided with a pair of rod-like bodies pivotably attached so as to be openable and closable so as to be fixed at substantially right-angle positions. A pile core rod hole for inserting the pile core rod was formed, and an escape core rod hole for inserting the escape core rod was formed in the pair of rod-like bodies at the same distance from the pile core rod hole. It is characterized by that.

  Moreover, the pile core management jig of this 2nd invention has the diameter match | combined with the excavation diameter, the circular pile core position confirmation board which formed the pile core rod hole which inserts a pile core rod in the center, and this pile And a laying board having a hole for excavation into which the core position confirmation board is fitted.

Moreover, the pile core management method using the pile core management jig of the present invention is driven by a pile core rod at the pile core position on the ground, and the first pile core rod is inserted into the pile core rod hole. Installing the pile core management jig of the invention, driving the relief core rod into the ground via the relief core hole of the pile core management jig, and then removing the pile core management jig of the first invention;
The pile core position confirmation plate of the pile core management jig of the second invention is installed on the ground so that the pile core rod is inserted into the pile core rod hole, and this pile core position confirmation plate is fitted into the excavation hole. To secure the excavation core by removing the pile core position confirmation plate,
A step of starting excavation by aligning the excavation head core with the hole core of the excavation hole of the floor plate,
It is characterized by comprising.

According to the pile core management jig of the first aspect of the invention, a pair of rod-like bodies pivotably attached so as to be openable and closable are provided so as to be fixed at a substantially right angle position, and the pile core rods are inserted into the corners of the rod-like bodies that are substantially perpendicular. And a relief core rod hole for inserting the relief core rod into the pair of rod-like bodies at the same distance from the pile core rod hole. The rod can be driven easily and accurately, and the pile core can be easily confirmed later by inserting the relief core rod into the relief core hole of the rod-shaped body.
When not in use, the rod-like body can be folded and carried in a compact state or stored.

  Moreover, according to the pile core management jig of the second invention, a circular pile core position confirmation plate having a diameter matched to the excavation diameter and formed with a pile core rod hole into which the pile core rod is inserted at the center, Since the pile core position confirmation plate is provided with a laying plate formed with a hole for excavation into which the pile core position confirmation plate is fitted, the pile core position confirmation plate is installed so as to insert the pile core rod into the pile core rod hole, The laying plate is installed so that the pile core position confirmation plate fits into the excavation hole, and then the excavation core can be secured by removing the pile core position confirmation plate. By drilling with the drill head aligned with the hole core, an accurate pile core hole can be excavated.

  Moreover, according to the pile core management method using the pile core management jig of the present invention, it is possible to easily align the pile core during construction.

  Hereinafter, an embodiment of a pile core management jig and a pile core management method using the pile core management jig of the present invention will be described based on the drawings.

In FIG. 1, the 1st Example of the pile core management jig | tool of this invention is shown.
This pile core management jig A is provided with a pair of rod-like bodies 1a, 1b pivotably attached so as to be openable and closable so that they can be fixed at substantially right-angle positions. And the escape core rod hole 12 into which the escape core rod 3 is inserted into the pair of rod-like bodies 1a and 1b at the same distance from the pile core hole 11. Respectively.

The rod-shaped bodies 1a and 1b are made of a long aluminum hollow square member having a length of about 3 m, and are pivotally attached to the rod-shaped body 1a having a L-shaped protruding piece 13 formed at the tip and a protruding piece 13 of the rod-shaped body 1a. It is comprised with the linear rod-shaped body 1b made.
The pile core rod hole 11 is formed at the corners of the rod-shaped bodies 1a and 1b that are substantially perpendicular so as to be adjacent to the pivot shaft 13a of the projecting piece 13. The rod-shaped bodies 1a and 1b are formed at positions 2 m away from the pile core hole 11 respectively.

Moreover, the both ends of the link arm 14 are pivotally attached to the intermediate part of each rod-shaped body 1a, 1b.
The link arm 14 is pivotally attached to the middle portion via a hinge 15a so that the link arm 14 can be bent, and is fixed by a stopper 15b in a straightened state, thereby fixing the rod-like bodies 1a and 1b at right angles. In addition, the rod-like bodies 1a and 1b can be folded by releasing the stopper 15b and bending it.
In addition, the stop hole 16 for hold | maintaining the pile core management jig | tool A in the folded state is formed in the appropriate position of each rod-shaped body 1a, 1b.

2 to 3 show a second embodiment of the pile core management jig of the present invention.
This pile core management jig B has a diameter matching the excavation diameter, and has a circular pile core position confirmation plate 4 in which a pile core bar hole 41 for inserting the pile core bar 2 is formed at the center, and the pile core position. And a laying plate 5 having an excavation hole 51 into which the confirmation plate 4 is fitted.

In this embodiment, the pile core position confirmation plate 4 is arranged with a cross-shaped rebar inside a circular rebar, and the cross-shaped rebar is fixed by a plate, and a pile core hole 41 is formed at the center of the circle. Is forming.
The outer diameter of the pile core position confirmation plate 4 is preferably substantially the same as the excavation diameter.

Further, in the present embodiment, the laying plate 5 is formed in a rectangular iron plate in the width direction so as to be excavated hole 51, and the iron plate is hung by a suspension wire hole 52 that is hung by a wire, or a slinging wire. A hook fitting 53 for hooking is formed.
The excavation hole 51 is reinforced by welding a ring-shaped square member 54 to the edge of the hole, and serves to stop the lip 6 so that the pile core position confirmation plate 4 can be fitted with almost no gap. Is formed.

Next, a pile core management method (pile construction example) using the pile core management jig A of the first embodiment and the pile core management jig B of the second embodiment will be described.
First, the pile core rod 2 is driven into the pile core position on the ground, and the pile core management jig A of the first embodiment is installed so that the pile core rod 2 is inserted into the pile core rod hole 11.
Then, the escape core rod 3 is driven into the ground via the relief core hole 12 of the pile core management jig A, and then the pile core management jig A is removed.
Thereby, the escape core 3 can be driven easily and accurately. By inserting the escape core 3 into the escape core hole 12 of the pile core management jig A, the pile core hole 11 is inserted. You can easily check the pile core later.

Next, the pile core position confirmation plate 4 of the pile core management jig B is installed on the ground so that the pile core rod 2 is inserted into the pile core rod hole 41, and this pile core position confirmation plate 4 is a hole for excavation. The laying plate 5 is installed on the ground so as to be fitted to 51.
In this case, the ground on which the floor plate 5 is installed is leveled in advance.
Then, as shown in FIG. 4, the excavation core is secured by removing the pile core position confirmation plate 4, and the excavation head core of the pile driving heavy machine is aligned with the hole core of the excavation hole 51 of the laying plate 5. To start.
In this case, the laying plate 5 can be fixed by stepping on the caterpillar of the pile driving heavy machine main body so that the laying plate 5 does not shift laterally.

Next, as shown in FIG. 5, drilling is started.
In this case, as shown in FIG. 5 (a), since the excavation core is easily displaced due to the influence of obstacles and the like in the first 2 to 3m, if necessary, the pile core can be removed from the escape core 3 with a measuring rod. While confirming the position, after excavating to a predetermined position by forward rotation excavation, as shown in FIG.
Moreover, normal rotation and reverse rotation are repeated 2-3 times, and the ground in the drilling hole is agitated.
At this time, attention should be paid to the fact that the vertical accuracy of the screw S is always measured, the laying plate 5 is not moved at the time of drilling, and the laying plate 5 is not moved at the time of discharging with a jumbo or the like.
Then, after completion of the drilling, the drilling core is confirmed from the escape core 3 in the manner described above.

Next, as shown in FIG. 6, the mouth tube 6 is inserted.
The mouth tube 6 is press-fitted or rotationally press-fitted with a rotary cap 7, and the pressure input is based on the weight of the speed reducer.
If the rotational press-fit is insufficient, a bit is attached to the lower portion of the mouth tube 6 to treat the press input.
As the mouth tube 6, for example, a general structural steel pipe having a diameter of 1219.2 mm, a thickness of 12.7 mm, and a length of 3000 mm can be used.

Next, as shown in FIG. 7, the mouth tube 6 is set.
The square member 61 attached around the mouth tube 6 and the square member 54 attached also to the first laying plate 5 are set so as to match.
In this case, when the mouth tube 6 is inserted, the vertical accuracy is always measured and inserted.
Moreover, since the earth discharge port 62 is provided in the upper part of the mouth pipe | tube 6, it does not make a mistake in a direction at the time of setting.

Next, as shown in FIG. 8, this pile drilling is performed.
In this case, the position of the mouth tube is confirmed from the escape core 3 and the head core of the screw S is aligned to start drilling.
Further, when the head of the screw S is lowered from the mouth tube 6, it is confirmed again that the rod core is a pile core with reference to the mouth tube 6, and the drilling is continued. This confirmation is repeated as necessary.

Next, as shown in FIG. 9, a pile is inserted.
FIG. 9 (a) shows a joint between the lower pile and the middle pile. When the lower pile is a joint pile, the pile is placed on the mouth pipe 6 and the pile is set. The pile is joined with a non-welded joint 82.
9B shows a joint between the middle pile and the upper pile. When the middle pile is a joint expansion head or a PHC pile, the sling wire 83 is hooked on the hanging metal fitting 53 attached to the laying plate 5. Then, the upper pile is joined to the upper pile by the non-welded joint 82.

Thereafter, as shown in FIG. 10 (a), for example, using a Yatsuko 84 and a rotating cap 7 having an outer diameter of 1000 mm and a length of 3500 mm, the pile is set to a predetermined pile head level while checking the horizontal position and vertical accuracy. To do.
Next, as shown in FIG. 10 (b), when the pile head is positioned below the lower end of the mouth tube 6, after the Yatco 84 is set on the pile head, it is allowed to stand for about 1.5 to 2 hours. Pull out the Yatco 84.
Then, as shown in FIG. 10 (c), the mouth tube 6 is removed, and as shown in FIG. 10 (d), the laying plate 5 is removed and the operation is completed.

Thus, according to the pile core management jig A of the first embodiment, a pair of rod-like bodies 1a and 1b pivotably attached so as to be openable and closable are provided so as to be fixed at substantially right-angle positions, and the rod-like bodies 1a having substantially right angles are provided. A pile core rod hole 11 into which the pile core rod 2 is inserted is formed at the corner of 1b, and a clearance core rod is formed in the pair of rod-like bodies 1a and 1b at the same distance from the pile core rod hole 11. Since the escape core rod holes 12 for inserting the cores 3 are respectively formed, the escape core rod 3 can be driven easily and accurately, and the escape core rod 3 is inserted into the escape core rod holes 12 of the rod-like bodies 1a and 1b. Thus, the pile core can be easily confirmed later.
Further, when not in use, the rod-like bodies 1a and 1b can be folded and carried and stored in a compact state.

  Moreover, according to the pile core management jig B of the second embodiment, a circular pile core position having a diameter matched to the excavation diameter and formed with a pile core rod hole 41 into which the pile core rod 2 is inserted at the center. Since the check plate 4 and the laying plate 5 in which the excavation hole 51 to which the pile core position check plate 4 is fitted are provided, the pile core position check plate 4 is put into the pile core hole 41 of the pile core bar. 2 is inserted, and the laying plate 5 is installed so that the pile core position confirmation plate 4 is fitted in the excavation hole 51, and then the pile core position confirmation plate 4 is removed to remove the pile core. By excavating the excavation head core with the excavation head core in the excavation hole 51 of the laying plate 5, an accurate pile core excavation can be excavated.

  As mentioned above, although the pile core management method of the present invention and the pile core management method using the pile core management jig have been described based on the embodiments thereof, the present invention is limited to the configurations described in the above embodiments. Instead, the configuration can be changed as appropriate without departing from the spirit of the invention.

  As mentioned above, since the pile core management method of the present invention and the pile core management method using the pile core management jig can easily perform the alignment of the pile core, the pile core management method can be preferably used for the application of pile construction. it can.

The 1st Example of the pile core management jig | tool of this invention is shown, (a) is a top view, (b) is an enlarged perspective view near a pile core rod hole, (c) is an enlarged view which shows a link arm and a stopper. is there. The 2nd Example of the pile core management jig | tool of this invention is shown, (a) is a top view of a core position confirmation board, (b) is the same sectional drawing. The 2nd Example of the pile core management jig | tool of this invention is shown, (a) is a top view of a laying board, (b) is the same sectional drawing. It is a 1st process drawing which shows the construction example of the pile using the pile core management jig | tool of this invention. It is the 2nd process drawing. It is the 3rd process drawing. It is the 4th process drawing. It is the same 5th process drawing. It is the 6th process drawing. It is the 7th process drawing.

Explanation of symbols

A Pile core management jig B Pile core management jig S Screw 1 Rod 11 Pile core hole 12 Escape core hole 13 Protruding piece 13a Pivoting shaft 14 Link arm 15a Hinge 15b Stopper 16 Stop hole 2 Pile core 3 Escape Core rod 4 Pile core position confirmation plate 41 Pile core rod hole 5 Laying plate 51 Excavation hole 52 Suspension wire hole 53 Hook metal fittings 54 Square material 6 Mouth pipe 61 Square material 62 Drainage port 7 Rotating cap 81 Pile rest 82 Unwelded Fitting 83 sling wire 84 Yatco

Claims (3)

  A pair of rods pivoted so as to be openable and closable are provided so as to be fixed at a substantially right angle position, and a pile core rod hole for inserting a pile core rod is formed at a corner of the substantially rectangular rod, and the pair of rods is formed. A pile core management jig, wherein a relief core hole for inserting the relief core rod is formed in the rod-like body at a position at the same distance from the pile core hole.   A circular pile core position confirmation plate that has a diameter matched to the excavation diameter and has a pile core rod hole that inserts the pile core rod in the center, and a drilling hole that fits the pile core position confirmation plate is formed A pile core management jig characterized by comprising a laid board. The pile core management jig according to claim 1 is installed so that the pile core rod is driven into the pile core position on the ground, and the pile core rod is inserted into the pile core rod hole. A step of driving the escape core rod into the ground through the rod hole, and then removing the pile core management jig according to claim 1;
The pile core position confirmation plate of the pile core management jig according to claim 2 is installed on the ground so that the pile core rod is inserted into the pile core rod hole, and the pile core position confirmation plate is fitted into the excavation hole. To secure the excavation core by removing the pile core position confirmation plate,
A step of starting excavation by aligning the excavation head core with the hole core of the excavation hole of the floor plate,
A pile core management method using a pile core management jig characterized by comprising:

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