JP4911823B2 - Anchor frame anchoring structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixing structure for an anchor frame for a column base, and in particular, the height of the anchor frame can be easily and freely finely adjusted, and the anchor frame can be stably placed on a concrete disposed around a pile head. The present invention relates to an anchor frame fixing structure that can be installed and fixed in the above state.
[0002]
[Prior art]
Conventionally, when installing and fixing a column base anchor frame for mounting and fixing a column base anchor bolt, etc., on the scraped concrete placed around the pile head, it is necessary to use an angle material on the site. It has been generally practiced that the lower part of the gantry constructed in the above is fixed by being buried in discarded concrete, and an anchor frame is secured on the gantry.
[0003]
However, when using a gantry as described above, the structure is complicated, and the lower part of the gantry is buried in scraped concrete, or a liner is used to fill the gap and the horizontal level of the anchor frame. There is a problem that the work is extremely complicated and expensive. In addition, when the gantry and the anchor frame are installed on the discarded concrete as described above, there is a problem that a part of the anchor frame or the like has to be cut off when they come into contact with the pile head.
[0004]
In order to improve the above-described conventional anchor frame fixing method, for example, a fixing device for anchor bolts installed on a concrete pile as shown in Japanese Patent Laid-Open No. Hei 2-120534 or FIG. 4 has been developed.
[0005]
In this fixing device, as shown in FIG. 4, the anchor frame 53 that supports the anchor bolt 51 via the fixing means 52 is attached to the anchor frame 54 around the pile head 56 via the Z-type support leg 55. It was installed on the discarded concrete 57 placed in In the figure, 58 is a template and 59 is a nut.
[0006]
[Problems to be solved by the invention]
When the anchor frame 54 is installed on the waste concrete 57 using the Z-type support leg 55 as in the apparatus shown in FIG. 4, the above-described conventional frame or liner is not required, and the lower part of the frame is Since there is no need to embed it in discarded concrete, it has a great effect in that it is easy to work.
[0007]
However, in the apparatus shown in FIG. 4, since the Z-type support leg 55 having a certain height is used, the height cannot be adjusted, so that the horizontal level of the anchor frame 54 is difficult. there were.
[0008]
The anchor frame fixing structure according to the present invention is a completely new technology developed in view of the above-mentioned conventional problems, and in particular, the upper portion of the adjustment bolt having the plate integrally fixed to the lower end is attached to the anchor frame. A completely new technology in which a bolt hole drilled in a horizontal piece is inserted and a nut is screwed onto the top of the adjustment bolt, and the height of the anchor frame can be finely adjusted freely with the adjustment bolt. Is to provide.
[0009]
[Means for Solving the Problems]
The anchor frame fixing structure according to the present invention is a structure in which a column base anchor frame capable of mounting and fixing a column base anchor bolt or the like is installed and fixed on waste concrete provided around a pile head. An anchor formed by welding a plurality of angle members composed of a horizontal piece and a vertical piece so that the horizontal piece arranged at the lower end of the vertical piece is positioned outside the vertical piece and welded to each other. A frame, and an adjustment bolt having a plate integrally welded to the lower end and a screw provided on substantially the entire peripheral surface, and the upper portion of the adjustment bolt is inserted into a bolt hole drilled in the horizontal piece Furthermore, the anchor frame fixing structure is characterized in that a nut is screwed onto an upper portion of the adjusting bolt.
[0010]
In the anchor frame fixing structure of the present invention described above, since the plate is integrally fixed to the lower end of the adjusting bolt, the plate can be placed on the surface of the discarded concrete in a stable state. The plate is preferably a flat plate, but it is also possible to use a steel plate such as an angle or a C-shaped rope. Further, as means for fixing the plate, (1) a hole is made in the plate in advance, and the plate is fixed by a discard anchor from the hole. (2) The plate is welded and fixed to a metal object embedded in discarded concrete. (3) There are means such as fixing the plate with concrete or the like.
[0011]
The adjustment bolt is provided with a screw on substantially the entire outer peripheral surface thereof, and the upper part of the adjustment bolt is inserted into a bolt hole drilled in a horizontal piece of the anchor frame, and a nut is provided on the upper part thereof. Since it is screwed, the height of the anchor frame can be finely adjusted freely by moving the nut. Accordingly, the horizontal level of the anchor frame can be obtained easily and accurately.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
A practical example of the anchor frame fixing structure according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a simplified explanatory view of the main part of the fixing structure of the present invention, and FIG. 2 is a part of the fixing structure of FIG. FIG. 3 is a perspective view illustrating a state in which the fixing structure of the present invention is specifically implemented on site.
[0013]
1 to 3, reference numeral 1 denotes an anchor frame for a column base, which is formed of an angle member 2 composed of a horizontal piece 2a and a vertical piece 2b. Reference numeral 3 denotes a rigid member fixedly attached to the anchor frame 1 and holds an anchor bolt 5 via a fixing means 4. Reference numeral 6 denotes a template, which is attached to the upper portions of a plurality of anchor bolts 5 via nuts 7.
[0014]
Reference numeral 8 denotes a pile head embedded in the ground, and a discarded concrete 9 is placed around the pile head 8. Reference numeral 10 denotes an adjusting bolt, and a screw is provided on almost the entire circumference thereof. A flat plate 11 is integrally welded to the lower end of the adjusting bolt 10 as a plate.
[0015]
The upper part of the adjustment bolt 10 is inserted into a bolt hole provided at a predetermined position of the horizontal piece 2a of the anchor frame 1, and two nuts 12 are screwed to the upper part with the horizontal piece 2a interposed therebetween. . Accordingly, the anchor bolt 51 can be moved up and down freely along the adjustment bolt 10 by fixing the nut 12.
[0016]
In implementing the anchor frame fixing structure according to the present invention, in particular, as shown in FIG. 3 or FIG. 1, anchor bolts 51 formed of a plurality of angle members 2 are prepared, and the anchor frame 1 has almost four corners. The upper part of the adjusting bolt 10 is inserted into a bolt hole drilled at a predetermined position of the horizontal piece 2a corresponding to the nut, and a nut 7 screwed in advance at a predetermined position of the upper part of the adjusting bolt 10 is attached to the horizontal piece 2a. It contacts the lower surface of the. Next, another nut 7 is screwed onto the upper portion of the adjusting bolt 10, and the horizontal piece 2 a is sandwiched from the upper and lower surfaces by the upper and lower nuts 7.
[0017]
In this way, with the adjustment bolts 10 attached to the horizontal pieces 2 a at the four corners of the anchor frame 1, the anchor frame 1 is arranged around the pile head 8 and the flat plate 11 attached to the lower end of the adjustment bolt 10 is attached. It is placed on the surface of the waste concrete 9 that is placed around the pile head 8.
[0018]
In this way, the anchor frame 1 arranged at a predetermined height around the pile head 8 via the adjusting bolt 10 is fixed with nuts 7 screwed into the adjusting bolts 10 provided at the four corners of the anchor frame 1. By moving, the height of the anchor frame 1 can be finely adjusted freely, whereby the horizontal leveling of the anchor frame 1 can be accurately performed.
[0019]
【Effect of the invention】
In the anchor frame fixing structure of the present invention described above, since the flat plate is integrally welded to the lower end of the adjusting bolt, the plate can be placed on the surface of the discarded concrete in a stable state. In addition, when concrete is further placed on the discarded concrete, the plate is completely embedded in the concrete and can be fixed in a stable state.
[0020]
The adjustment bolt is provided with a screw on almost the entire outer peripheral surface thereof, and the upper part of the adjustment bolt is inserted into a bolt hole drilled in a horizontal piece of the anchor frame. Since the nut is screwed, the height of the anchor frame can be finely adjusted freely by moving the nut. Therefore, the horizontal level of the anchor frame can be obtained easily and accurately.
[Brief description of the drawings]
FIG. 1 is a simplified explanatory diagram of a main part of a fixing structure of the present invention.
FIG. 2 is a perspective view of a part of the fixing structure of FIG.
FIG. 3 is a perspective view of a state in which the fixing structure of the present invention is specifically implemented on site.
FIG. 4 is a simplified explanatory view showing a fixing structure of an anchor frame of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Anchor frame 2 ... Angle material 2a ... Horizontal piece 2b ... Vertical piece 3 ... Solid 5 ... Anchor bolt 6 ... Template 8 ... Pile head 9 ... Discrete concrete 10 ... Adjust bolt 11 ... Flat plate 12 ... Nut 13 ... Disc Anchor 51 ... Anchor bolt 53 ... Solid 54 ... Anchor frame 55 ... Z-type support leg 56 ... Pile head 57 ... Waste concrete 58 ... Template 59 ... Nut

Claims (1)

In the structure where the anchor frame for the column base that can fix and fix the anchor bolt for the column base, etc. is installed and fixed on the rubbing concrete provided around the pile head,
An anchor frame formed by fixing a plurality of angle members composed of a horizontal piece and a vertical piece by welding while arranging the horizontal piece arranged at the lower end of the vertical piece outside the vertical piece. When,
An adjustment bolt having a plate integrally welded to the lower end and a screw provided on substantially the entire circumferential surface;
An anchor frame fixing structure characterized in that an upper portion of the adjusting bolt is inserted into a bolt hole drilled in the horizontal piece, and a nut is screwed onto the upper portion of the adjusting bolt.

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