JPH1037469A - Anchor bolt positioning construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide positioning construction capable of being easily removed from an anchor bolt, being done with less materials and using a template without requiring any large space in the case of conveyance or storage. SOLUTION: Two templates 12 formed in an L-shape are used to arrange then in symmetrical positions. Thereby, every through-hole is not required to be pulled out simultaneously from the upper end section 1a of every anchor bolt 1 like a conventional template formed of one sheet of plate member, and since through-holes 12a and 12b can be simultaneously pulled out from the upper end section 1a of some of anchor bolts 1 one by one of the L-shaped templates 12, the templates 12 can be easily removed in comparison with the conventional template formed of one sheet of plate member capable of being removed from the upper end section 1a of the anchor bolt 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning structure for anchor bolts used in construction work, and more particularly to a positioning structure for anchor bolts using a template before embedding in foundation concrete. It is.

[0002]

2. Description of the Related Art As a conventional anchor bolt positioning structure, as shown in FIG. 10, a male screw portion formed on an upper end portion 1a of an anchor bolt 1 that is vertically erected is penetrated through a through hole of a template 2. The template 2 is sandwiched between the nuts 4 and 5 and the spring washers 6 from both sides and tightened, thereby positioning the anchor bolt 1 in the height direction and the horizontal direction. The template 2 is mounted on the support frame 15, and thus the anchor bolt 1 is supported by the support frame 15 via the template 2.

[0003] Using such an anchor bolt positioning structure, concrete is poured into a formwork (not shown) around the anchor bolts 1 so that each anchor bolt 1 is positioned in the height direction and the horizontal direction. It is embedded and fixed in concrete while being held.

[0004]

However, in such a conventional anchor bolt positioning structure, as shown in FIG. 11, the template 2 is formed by a single plate member, and the anchor bolts 1 are provided at the four corners. A through hole 2a to be fitted is formed, and a round hole 2b for introducing concrete is formed in the center of the through hole 2a.

For this reason, when it is necessary to remove the template 2 after the concrete has been cast, the four through holes 2a at the four corners of the template 2 are fitted into the upper end portions 1a of the four anchor bolts 1 at the same time. Therefore, if the template 2 is not lifted straight, the template 2 will not come off from the upper end 1a of the anchor bolt 1 properly. There is a problem that it is very difficult to remove the template 2 from 1a.

Further, if the template 2 is made of a single plate member as in the prior art, a large amount of the material is required, and a large space is required for transportation and storage since a large space is required for placing the material. There is a problem that becomes.

Accordingly, an object of the present invention is to provide an anchor bolt positioning structure using a template which can be easily removed from an anchor bolt, requires less material, and does not require a large space during transportation or storage. Things.

[0008]

In order to solve the above-mentioned problems, an anchor bolt positioning structure according to the present invention comprises: an anchor bolt having an upper end vertically arranged at a horizontal embedding position and having a male screw portion; In the anchor bolt positioning structure comprising a template in which holes or recesses into which the anchor bolts are fitted are respectively formed at a plurality of the embedding positions, and a nut screwed into the male screw portion to fix or support the template. In this configuration, the template is formed in an L shape, and the two templates are arranged symmetrically with respect to each other and used.

According to the anchor bolt positioning structure having such a configuration, two L-shaped templates are arranged symmetrically with each other, and two templates are used. Therefore, like a template made of one plate member, It is not necessary to pull out all the through holes from the upper ends of all the anchor bolts at the same time, and it is sufficient to pull out the L-shaped templates one by one from the upper ends of some anchor bolts at the same time. This makes it easier to remove the template from the upper end of the anchor bolt.

[0010] In addition, the L-shape is such that if the material is taken out in an efficient arrangement so as to reduce the gap, the material is at least as large as in the case of a conventional square shape made of a single plate member. Because it is sufficient, less material is required than in the conventional case. In addition, since the L-shaped shape is arranged so as to take up no space so as to reduce the gap, a large space is not required during transportation or storage.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 are views showing an anchor bolt positioning structure according to a first embodiment of the present invention. The same reference numerals are used for the same components as the conventional one, and the description of the same configuration as the conventional one is omitted.

FIG. 1 shows a first embodiment of the present invention.
It is a figure corresponding to FIG. 9 which shows the conventional anchor bolt positioning structure. As shown in FIG. 1, in the present embodiment, instead of the conventional template 2, two L-shaped templates 12 (see FIG. 2) are provided at symmetrical positions.

As shown in FIG.
And two through holes 1 at both ends.
2a is formed, and a through-hole 12b is formed at one point in a corner at a right angle to the center.

As shown in FIG. 3, one such template 12 is provided by first fitting to three upper end portions 1a of the anchor bolt 1, and then the other template 12 The two through holes 12a are fitted to the same upper end 1a as the upper end 1a of the anchor bolt 1 to which the two through holes 12a of the template 12 provided earlier fit.
By fitting the through-hole 2b to the remaining upper end 1a, two templates 12 can be provided symmetrically with respect to each other as shown in FIG.

As described above, according to the anchor bolt positioning structure according to the present embodiment, two L-shaped templates 12 are arranged at symmetric positions with each other and two templates are used. Unlike the template 2 made of a plate member, it is not necessary to simultaneously pull out all the through holes 2 a from the upper end portions 1 a of all the anchor bolts 1.
Since the L-shaped templates 12 only have to be simultaneously removed one by one from the upper end portions 1a of some of the anchor bolts 1, the template 2 made of one plate member is removed from the upper end portions 1a of the anchor bolts 1. It can be easily removed.

Further, as shown in FIG. 4, the L-shaped shape can be formed into a square shape made of a single plate member as in the related art by efficiently arranging the material so as to reduce the gap. Since the material is at least sufficient as compared with the case of the above, the material can be reduced as compared with the conventional case. Also, as shown in FIG.
The L-shaped shape is arranged so as to take up no space so as to reduce the gap, so that a large space is not required during transportation or storage.

FIGS. 5 and 6 show a second embodiment of the present invention. In the first embodiment,
While the template 12 has three through holes 12a and 12b formed therein, in the second embodiment, the template 22 has five through holes 22a and 22b.
Is formed in the point that is formed. As shown in FIG. 6, such a template 22 can be applied to a case of an anchor bolt positioning structure in which eight upper ends of a U-shaped anchor bolt 1 are used.

FIGS. 7 and 8 are views showing a third embodiment of the present invention. This embodiment is different from the above embodiment in that nine through holes 32a and 32b are formed in the template 32. As shown in FIG. 8, such a template 32 can be applied to a case of an anchor bolt positioning structure in which 16 upper ends of a U-shaped anchor bolt 1 are used.

In the above embodiment, the case where the U-shaped anchor bolt 1 is used has been described. However, the anchor bolt may be one that extends straight.

In the above embodiment, the case where the through-hole 12a is formed in the template 12 has been described. However, instead of the through-hole 12a, a recess which does not penetrate the thickness of the template 12 is formed. May be fitted to the upper end of the anchor bolt 1.

Also, as in the above embodiment, the nut 5
In addition to the operation of tightening and fixing the template 12 together with the nut 4, the template 12 may be placed on the nut 5 alone to support it.

Further, in the above embodiment, the case of removing the template 12 later has been described. However, the template 12 may be buried in concrete to help prevent cracks. In this case, the template 12 is provided as shown in FIG. , Three bolt holes 42 in template 42
It is good to use what formed the elongated slit hole 42c between a and 42b. The reason is that concrete is filled in the slit hole 42c, which can contribute to prevention of cracking of concrete.

[0023]

As described above, according to the anchor bolt positioning structure of the present invention, two L-shaped templates are arranged symmetrically with each other and used, so that one plate member can be used. It is not necessary to simultaneously pull out all the through holes from the upper end portions of all the anchor bolts as in the completed template. It is sufficient to pull out the L-shaped templates one by one from the upper end portions of some of the anchor bolts. This makes it easier to remove the template made of a single plate member than to remove it from the upper end of the anchor bolt.

By embedding this template in concrete, it is expected that the anchor bolt can be improved in anchoring strength by preventing the concrete from cracking. In this case, as in the template 42 shown in FIG. 9, a slit-shaped hole 42c is formed along the side of the L-shaped steel, and the hole 42c can be filled with concrete.

In addition, the L-shaped shape has a material at least as large as that of a conventional square shape made of a single plate member when material is efficiently arranged so as to reduce gaps and material is taken out. Because it is sufficient, less material is required than in the conventional case. In addition, since the L-shaped shape is arranged so as to take up no space so as to reduce the gap, a large space is not required during transportation or storage.

In the above embodiment, an L-shaped template bent at a right angle is used.
The right angle of the position of the upper end 1a of the anchor bolt 1 can also be accurately obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an anchor bolt positioning structure according to a first embodiment of the present invention.

FIG. 2 is a plan view of the template 12 of FIG.

FIG. 3 is a plan view of the anchor bolt positioning structure of FIG. 1 in the process of being assembled;

FIG. 4 is a diagram showing an example of a material removal and arrangement state of a template 12.

FIG. 5 is a plan view of a template 22 according to the second embodiment of the present invention.

FIG. 6 is a plan view of an anchor bolt 1 showing a second embodiment of the present invention.

FIG. 7 is a plan view of a template 32 showing a third embodiment of the present invention.

FIG. 8 is a plan view of an anchor bolt 1 showing a third embodiment of the present invention.

FIG. 9 is a plan view of a template 42 showing another embodiment.

FIG. 10 is a front view showing a conventional anchor bolt positioning structure.

FIG. 11 is a plan view of the anchor bolt positioning structure of FIG. 10;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 anchor bolt 1a upper end 2 template 2a through hole 2b hole 4, 5 nut 6 spring washer 12 template 12a, 12b through hole 15 support frame 22 template 22a, 22b through hole 32 template 32a, 32b through hole 42 template 42c slit hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidenobu Tanaka 2-4-2 Toyo, Koto-ku, Tokyo Inside Hitachi Koki Co., Ltd. (72) Inventor Shigeru Kurata 2-4-2 Toyo, Toyo, Koto-ku, Tokyo Hitachi Inside Equipment Co., Ltd. (72) Inventor Takashi Kitano 1-9-1, Kitahama-ku, Wakamatsu-ku, Kitakyushu-shi, Fukuoka Prefecture Inside the Wakamatsu Plant, Hitachi Metals Co., Ltd. No. 1 Inside the Wakamatsu Plant, Hitachi Metals, Ltd. (72) Kuniaki Sato, 24-21 Yaesaki-cho, Hiratsuka-shi

Claims (4)

[Claims] 1. An anchor bolt having an upper end vertically arranged at a horizontal embedding position and a male screw portion formed therein, and a plurality of holes or recesses into which the anchor bolts are fitted are formed at the plurality of embedding positions, respectively. An anchor bolt positioning structure comprising: a template; and a nut screwed to the male screw portion to fix or support the template. An anchor bolt positioning structure, wherein the template is formed in an L shape, and the templates are arranged at symmetric positions with respect to each other. An anchor bolt positioning structure, characterized in that a plurality of anchor bolts are used. 2. The anchor bolt positioning structure according to claim 1, wherein the holes or recesses are formed in the L-shaped template at least at three positions, that is, at both ends and at a corner at a right angle to the center. . 3. The hole or the concave portion at both ends of the L-shaped template has the same upper end portion as the upper end portion of the anchor bolt with which the hole or the concave portion at both ends of another template fits. 2. A fitting according to claim 1, wherein
Or the anchor bolt positioning structure according to claim 2. 4. The anchor bolt positioning structure according to claim 1, wherein an elongated hole is provided between the bolt holes along a side of the L-shaped template.