JPH04228724A - Anchor bolt placing jig - Google Patents

Abstract

PURPOSE:To provide an anchor bolt placing jig which can be erected rapidly, easily and stably between upper ends of concrete formworks arranged opposite to each other and can be used for foundation concrete construction of prefabricated housing both for north-oriented and south-oriented whose positions of vestibules, back doors are exactly opposite to each other. CONSTITUTION:On the both sides of a base 8 constituting a jig, indexes showing dimensional base lines A-A and B-B of a foundation concrete 23 are provided symmetrically on both sides. A connecting pin 9 is pierced and fixed to the base 8, and an upper and a lower ends of the connecting pin 9 are projected from both sides. By engaging one of the upper end or the lower end of this connecting pin 9 with a hole at an upper end of concrete formworks C arranged opposite to each other, the anchor bolt placing jig is erected stably between the upper ends of both formworks C and C.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor bolt installation jig for setting the position of an anchor bolt to be installed on the foundation concrete of a building.

0002

[Prior Art] Anchor bolts installed on foundation concrete play an important role in connecting the foundation concrete and the building constructed on the foundation concrete. If this accuracy could not be obtained, the anchor bolts could not be connected to the building, and tedious correction work had to be done on site each time.

[0003] Therefore, conventionally, accurate precision has been required for setting the anchor bolt installation position, for example, as disclosed in Japanese Utility Model Application Publication No. 54-130344 and Japanese Utility Model Application No. 49-62903.
Various anchor bolt installation jigs have been proposed, such as the jig disclosed in the above publication, in which indicators are provided on the top surface of the substrate to indicate the position of the dimensional reference line of the foundation concrete.

0004

[Problems to be Solved by the Invention] However, when the conventional installation jig is installed between the upper ends of the concrete formwork, it is fixed to the upper end surface of the formwork with nails or the like. Therefore, there is a problem in that installing and removing the jig is troublesome and the work becomes complicated. In addition, in general, when comparing north-facing and south-facing prefabricated houses, the entrance, back door, living room, and kitchen are often located in exactly opposite positions.
In this case, the structure of the foundation concrete will also be constructed symmetrically so that it is exactly the opposite.

However, in order to achieve this, in the case of conventional anchor bolt installation jigs that only provide indicators on the top surface of the board, it is necessary to prepare two types of symmetrical jigs, which increases component costs. In addition, there is also the problem that these two types of jigs must be used properly each time, making the work complicated. This invention was made to solve such problems.

[0006]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a structure that is constructed between the upper ends of concrete forms placed opposite each other during molding of the foundation concrete of a building, and is planted on the foundation concrete. In an anchor bolt installation jig equipped with a board that supports the anchor bolt to be installed, on the board, indicators indicating the position of the dimension reference line of the foundation concrete are provided symmetrically on both the front and back sides of the board, and A connecting pin is penetrated and fixed so that both upper and lower ends protrude, and the upper end or lower end of this connecting pin is selectively fitted into a hole in the upper end of the concrete form.

[0007]

[Operation] With the above structure, when the upper end or the lower end of the connecting pin is fitted into the hole at the upper end of the concrete form, the anchor bolt installation jig is stably installed between the upper ends of the form. In addition, when installing anchor bolts in the foundation concrete of both north-facing and south-facing prefabricated houses, where the entrance and back entrance are exactly opposite, the front and back sides of one installation jig can be selectively used. Ru.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples embodying the present invention will be described below with reference to the drawings. FIG. 1 shows a plan view of the residential foundation concrete 23 and anchor bolt installation jigs used for each part thereof, and (a) shown in the center of the figure is a plan view of the residential foundation concrete 23. If a plurality of standard dimensions A and B shown at equal intervals in the vertical and horizontal directions by dashed lines are assumed, then the foundation concrete forms C shown by solid lines are arranged facing each other at predetermined intervals according to the standard dimensions A and B, Concrete is poured between these concrete forms C to form foundation concrete 23.

The anchor bolt installation jig is installed between the upper ends of the opposing formwork C at the intersection of the vertical dimension reference line A-A and the horizontal dimension reference line B-B on the foundation concrete 23, FIG. 1(b) shows a peripheral anchor bolt installation jig (hereinafter referred to as a peripheral anchor) 1 installed between opposing formworks C of a straight peripheral part D of the foundation concrete 23. Fig. 1(c) shows an outside corner anchor bolt installation jig (hereinafter abbreviated as an outside corner anchor) 2, which is installed at an inside corner F.
A T-angle anchor bolt installation jig (hereinafter abbreviated as T-angle anchor) 4 installed at the T-corner part G is shown in FIG. 1(e). Partition anchor bolt installation jig (
Fig. 1(f) shows a partition application anchor bolt installation jig (hereinafter abbreviated as a partition application anchor) 5, which is installed at the partition cross corner I and the partition T corner J, respectively. Figure 1(g) and (h) show the entrance anchor bolt installation jig (hereinafter referred to as entrance anchor) 7 installed at the entrance corners K and L, respectively, as shown in Figure 1(i).
(j) shows each.

To explain the outer peripheral anchor 1 shown in FIGS. 1(b), 2, and 3, holes 8a at the four corners of the anchor body 8, which is a rectangular plate-shaped substrate made of steel, are provided with holes 8a as shown in FIG. A connecting pin 9 for fitting and connecting is inserted into a hole at the upper end of the formwork C and fixed by welding or the like. This connecting pin 9 has an upper end protruding upward from the upper surface of the anchor body 8, a lower end thereof protruding downward from the lower surface of the anchor body 8, and either the upper or lower end formed with the same diameter is connected to the formwork. It is designed to fit into hole C.

Furthermore, cylindrical anchor bolt support members (hereinafter referred to as support members) 10 are fitted and fixed into the two through holes formed in the anchor body 8, respectively.
An anchor bolt insertion hole (hereinafter abbreviated as insertion hole) 10a is formed at the center of the hole. In FIG. 2, when considering an XY plane including the Y-axis and the located on the line X1
- On both sides of the anchor body 8 on X1, V-shaped notches 11, 1 are provided to clearly indicate the position of the anchor bolt core.
1 is provided. A line X2 parallel to the line X1-X1
- On X2, the longitudinal dimension reference line A-A is located at both sides and approximately the center of the anchor body 8
V-shaped notches 12, 12 and a small-diameter through hole 13 are provided to clearly indicate the position. Also, line X2-X2
V-shaped notches 14 are provided at both end edges of the anchor body 8 on a line Y1-Y1 that is perpendicular to the line Y1-Y1 and passes through the center of the through hole 13, to clearly indicate the position of the horizontal dimension reference line B-B.
, 14 are provided.

[0012] In other anchors to be described later, parts having the same reference numerals as those of the anchors in FIGS. 2 and 3 have the same functions, and therefore will not be described here. Figure 1(c),
The protruding corner anchor 2 shown in FIGS. 5 and 6 has an anchor body 8 with one corner cut out, and connecting pins 9 are provided at the other three corners. Further, a notch having a short notch edge 16 is provided on the opposite side of the corner M at one end of the notch edge, and the notch edge 16 and the corner M are connected to the line X2.
- Position on X2 to clearly indicate dimension reference line A-A. Furthermore, a notch having a notch edge 17 is provided at the other end of the notch edge on the opposite side to the corner N, and the notch edge 17 and the corner N are located on the line Y1-Y11 and the reference dimension line B
- Specify B.

[0013] The support member 10 is provided at three locations. The centers of the insertion holes 10a of the two supporting members 10 are
The centers of the insertion hole 10a of the other support member 10 located on 1-X1 and the insertion hole 10a of the support member 10 located on the notch side of the two support members 10 described above are It is located on the line Y2-Y2 perpendicular to the line X1-X1. Line Y
2-Y2 indicates the position of the support member 10.

The corner anchor 3 shown in FIG. 1(d), FIG. 7, and FIG. 8 has four connecting pins 9 at the four corners of the anchor body 8.
One of the two diagonally opposing connecting pins 9 is located slightly inward. Furthermore, seven supporting members 10 are fixed to the anchor body 8. The T-angle anchor 4 shown in FIG. 1(e), FIG. 9, and FIG. A member 10 is fixed. Furthermore, among the right-angled edges forming each of the two interior angles of the anchor body 8, one of the shorter edges 17 is connected to the line Y1.
- Position on Y1 to clearly indicate reference dimension line B-B.

In the partition anchor 5 shown in FIG. 1(f), FIG. 11, and FIG. 12, all four connecting pins 9 at the four corners of the anchor body 8 are provided closer to the line X2-X2. Two supporting members 10 are provided in parallel. In addition, the anchor body 8 has a transparent hole 18 for confirming concrete placement status.
18 are provided. The partition application anchor 6 shown in FIGS. 1(g), 13, and 14 has connecting pins 9 provided at the four corners of the anchor body 8, and both connecting pins at the right corner as shown in FIG. 9, two more connecting pins 9 are arranged closer to the line Y1-Y1. Moreover, the number of supporting members 10 is two. This partition anchor 6 is
The upper end of the connecting pin 9 that protrudes upward is disposed at the partition cross corner shown in FIG. 1(g), and by turning it over and using the lower end of the connecting pin 9 protruding downward,
It is installed at the T corner of the partition shown in .

The entrance anchor 7 shown in FIGS. 1(i), 1(j), 15 and 16 has a horizontal T-shape in plan view, and is provided with connecting pins 9 at its four corners that protrude both upward and downward. There are three supporting members 10. This entrance anchor 7 is arranged at the entrance corner K shown in FIG. 1(i) by the lower end of the connecting pin 9 that projects downward, and by turning it over and using the upper end of the connecting pin 9 that projects upward. It is arranged at the corner L of the entrance shown in FIG. 1(j).

Now, a method of arranging anchor bolts on the foundation concrete of a building using the above-mentioned anchor bolt arranging jig will be explained with reference to FIGS. 1, 17, and 18. According to the basic vertical and horizontal dimensions A and B of the residential foundation concrete, formwork C is placed facing each other with an interval equal to the thickness of the concrete. Through holes 20 are provided at predetermined positions at the upper end of the formwork C, and the lower ends of the connecting pins 9 are fitted into these through holes 20. Then, anchor bolt installation jigs such as the outer periphery anchor 1 and the protruding corner anchor 2 are placed at the intersection of the dimension reference lines A-A and B-B between the upper ends of the formwork C, and the connecting pins 9 Formwork C due to the fitting relationship between the lower end and the through hole 20
, C is stably installed between the upper ends of the two. And the insertion hole 1
Anchor bolt 21 is inserted into 0a, and its upper male thread 21a projects upward from the upper end of support member 10,
By screwing the nut 22 onto the male thread 21a,
Anchor bolts 21 are suspended between opposing formworks C and C. In this state, concrete 23 is placed between the formworks C and C and allowed to harden. After that, the nuts 22 are removed and the anchor bolt installation jigs such as the outer periphery anchor 1 and the corner anchor 2 are removed, and the formwork When C and C are removed, a large number of anchor bolts 21 are planted at predetermined positions on the foundation concrete 23.

Therefore, the anchor bolt installation jig can be installed and removed by simply fitting the lower end of the connecting pin 9 into the through hole 20 at the upper end of the formwork C, or releasing the fitted state. can be done quickly and easily. This anchor bolt 21 must be installed in an accurate position with high precision. For example, as shown in FIG. Even if you try to maintain the distance, it may not be possible to obtain an accurate distance due to dimensional errors or installation errors in the formwork C. In that case, one anchor (for example, outer circumferential anchor 1) should be aligned with the dimension reference line A-A,
At the same time as setting it at the position B-B, measure the distance Q between the outer periphery anchor 1 and the protruding corner anchor 2 using a long scale (not shown) to keep the distance between the anchor bolts 21 accurate. .

For this purpose, both notches 14 of the peripheral anchor 1,
14 and the through hole 13 or the corner N of the protruding corner anchor 2, the through hole 13, and the notch edge 17 are aligned with the dimension reference line B-B, and both the notches 12, 12 of the outer peripheral anchor 1 and the through hole 13 or the protruding corner anchor 2 are aligned. The corner M, through hole 13 and notch edge 16 of , 2, and the distance between the inner notch 14 of the outer circumference anchor 1 and the notch 17 of the protruding corner anchor 2, respectively, by moving the formwork C slightly. adjust. That is, the distance Q can be measured at three locations between both anchors 1 and 2,
The position of the anchor bolt 21 can be set at a more accurate position. Similarly, the positions of other anchor bolt installation jigs and the distances between them are also determined by the dimension reference lines A-A and B.
- Can be set accurately to match B.

Furthermore, measurements using this scale can be made not only before concrete pouring, but also during and after concrete pouring. 21 can be corrected and prevented from being incorrectly installed. In addition, a final check can be made after pouring concrete and washing off excess concrete. Therefore,
Anchor bolts 21 can be planted at precise positions on the foundation concrete. Note that the anchor bolt 21 can be planted at an accurate position on the foundation concrete. Note that the amount of protrusion of the anchor bolt 21 from above the foundation concrete can be adjusted using the nut 22.

[0021] Also, the indicators that clearly indicate the dimension reference lines A-A, B-B of the through hole 13, notch 14, etc. of the anchor body 8 are as follows:
It may be a grooved line or a stamp, and is provided so that it does not easily disappear from the anchor body 8. Furthermore, the upper and lower ends of the connecting pin 9 are provided protruding from the upper and lower surfaces of the anchor body 8, and the indicators consisting of the through hole 13, notch 14, etc. on the upper and lower surfaces are symmetrical. ,
Either the top or bottom side of the anchor body 8 can be used for constructing foundation concrete for both north-facing and south-facing prefabricated houses where the entrance, back door, etc. are exactly opposite positions, and it is possible to use either the top side or the bottom side of the anchor body 8. Since there is no need to prepare two types of left-right symmetrical parts, the cost of parts can be reduced and the work can be carried out quickly.

[0022] The anchor bolt installation jig described above is
I made adjustments by moving formwork C to determine the position of the anchor bolt. Therefore, with this movement, the anchor bolt 21 suspended and supported by the anchor body 8 also tilts, and there is a possibility that the anchor bolt 21 cannot be made to stand vertically on the foundation concrete. Therefore, the position of the anchor bolt 21 can be easily adjusted, and the position of the anchor bolt 21 can be easily adjusted.
An anchor bolt installation jig which has been further improved so as to be able to vertically stand the anchor bolt 1 on the foundation concrete will be described below with reference to FIGS. 19 and 20.

[0023] The anchor bolt installation jig 24 is attached to the base plate 25.
The adjustment plate 26 is superimposed on top. At the four corners of the substrate 25, there are connecting pins 55 with substantially semispherical tips for connecting with the formwork C.
is fixed through the upper and lower ends with their upper and lower ends protruding upward and downward, respectively, and a female threaded hole 27 is formed therein. A horizontal level adjustment bolt 28 is screwed into each female threaded hole 27, and its lower end projects below the board 25. In this case, the length of the protruding upper end or lower end of the connecting pin 55 is made sufficiently longer than the length of the bolt 28. In addition, the substrate 25
There are three female threaded holes 29 for attaching the adjustment plate 26, and in the same way as described above, V-shaped notches 30, 30 specify the dimension reference line A-A, and the dimension reference line B- V-shaped notches 31, 31 are provided to clearly indicate B, and both dimension reference lines A
A through hole 32 is provided at the intersection of -A and B-B. In addition, the substrate 25 has a notch 30 on the dimension reference line A-A.
, 30 and the concave lines 53, 53 that are continuous with the dimension reference line B-
Concave lines 54, 5 continuous with the notches 31, 31 on B
4 is provided.

Two support members 10 are fixed on the adjustment plate 26, and large-diameter escape holes 33 are provided in the substrate 25 at positions corresponding to the support members 10. The adjustment plate 26 has V-shaped notches 34, 34 that clearly indicate the dimension reference line A-A and V-shaped notches 34, 34 that clearly define the dimension reference line B-B, and have a predetermined positional relationship with the insertion hole 10a of the support member 10. A small-diameter through hole 36 is provided at the intersection of the notches 35, 35 and both reference dimension lines AA, BB. Further, corresponding to the female screw hole 29 of the board 25, the adjusting plate 26 has a female screw hole 29.
A through hole 37 with a larger diameter is provided, and by screwing an adjustment bolt 39 having a head into the female screw hole 29 through the washer 38 on the adjustment plate 26 and the through hole 37, the board 2
An adjustment plate 26 is attached and fixed on the top of the adjustment plate 5.

Now, as shown in FIG. 20, the installation jig 24 is placed at a predetermined position on the formwork C by inserting the lower end of the connecting pin 55 into the through hole 20 at the upper end of the formwork C. do. Then, the anchor bolt 21 is inserted into the insertion hole 10a, the male thread 21a at the top of the anchor bolt 21 is made to protrude upward from the upper end of the support member 10, and the nut 22 is screwed onto the male thread 21a. Suspended between opposing formworks C and C.

In this case, the notches 30, 30 on the substrate 25
, the notches 31, 31, and the through hole 32 can be used to adjust the position as described above using the scale. The four bolts 28 in contact with the upper end surface of the formwork C can adjust the distance between the upper end surface of the formwork C and the substrate 25, and the amount of protrusion of the anchor bolts 21 from above the concrete 23 can be adjusted. By using a horizontal level meter (not shown), adjustment can be made to keep the substrate 25 horizontal. In this way, by keeping the substrate 25 horizontal, the anchor bolts 21 can be provided vertically.

Now, the anchor bolt 21 must be installed with high accuracy based on the dimension reference lines A-A and B-B. It may be necessary to keep the distance between E and E within a dimensional error of about 1 mm to 3 mm. In order to maintain such highly accurate dimensions, as described above, it is time-consuming to move and adjust the formwork C. Therefore, by slightly loosening the adjustment bolt 39 and moving the adjustment plate 26 in the horizontal direction, the position of the anchor bolt 21 can be easily adjusted.
5. Using the through hole 36 and notches 34, 34, accurately measure the distance to the dimension reference lines AA, BB, and tighten the adjustment bolt 39.

Note that the anchor bolt installation jig 24 shown in FIG. 19 corresponds to the outer circumferential anchor 1 shown in FIGS. Also in the installation jig, the adjustment plate 26, bolt 2
Of course, it is possible to provide the same function as the installation jig 24 by providing the installation jig 8 or the like. FIG. 21 shows a state in which the substrate 25 and the adjustment plate 26 are overlapped, and the length of the support member 10 is made longer than the example shown in FIG. 19. Therefore, the anchor bolt 21 does not shake within the insertion hole 10a of the support member 10. When using this anchor bolt installation jig 24, an anchor guide 50 made of rubber, polystyrene resin, or the like may be provided below the anchor bolt installation jig 24, as shown in FIG. As shown in FIG. 23, this anchor guide 50 has a substantially inverted truncated cone shape, and is provided with an insertion hole 51 in the center having a diameter slightly larger than the diameter of the thread of the male thread 21a of the anchor bolt 21. Note that the thread diameter of the male threaded portion 21a of the anchor bolt 21 is slightly thicker than other portions. This is caused by rolling of the male threaded portion 21a. A ring-shaped engagement gourd 52 is protruded from the upper part of the inner circumferential surface of the anchor guide 50, and when the anchor bolt 21 is inserted into the insertion hole 51 of the anchor guide 50, the valley portion of the male threaded portion 21a of the anchor bolt 21 is inserted. The engagement gourd 52 is engaged, and the anchor guide 50 is engaged with the anchor bolt 21.

[0029]

As described in detail above, according to the present invention, even an amateur worker can install anchor bolts without any skill by providing an index on the substrate to indicate the position of the dimension reference line of the foundation concrete. Not only can the installation position be easily set, but all you have to do is fit the protruding end of the connecting pin into the hole at the top of the concrete form, so you can quickly and easily install and remove the jig. Furthermore, the indicators are provided symmetrically with respect to both the front and back surfaces of the board, and the connecting pins are fixed through the board so that both their upper and lower ends protrude toward both the front and back sides of the board, so that the entrance, back door, etc. Even when installing anchor bolts in the foundation concrete of prefabricated houses facing north and south, which are opposite positions, it is possible to selectively use both the front and back sides of a single installation jig, which is easier than conventional methods. Since there is no need to prepare two types of symmetrical parts and use them separately, this has the excellent effect of contributing to speedy work execution and lowering component costs.

[Brief explanation of the drawing]

FIG. 1 (a) shows a schematic plan view of a residential foundation concrete, and (b) to (j) are partial plan views of each part where an anchor bolt installation jig embodying the present invention is installed.

FIG. 2 is a plan view of an anchor bolt installation jig used on the outer periphery of a house foundation.

FIG. 3 is also a side view thereof.

FIG. 4 is a partial cross-sectional view of the board showing a state in which the connecting pin is fixed.

FIG. 5 is a plan view of an anchor bolt installation jig used at the projecting corner of a house foundation.

FIG. 6 is a side view of the same.

FIG. 7 is a plan view of an anchor bolt installation jig used at the corner of a house foundation.

FIG. 8 is also a side view thereof.

FIG. 9 is a plan view of an anchor bolt installation jig used at the T corner of a house foundation.

FIG. 10 is a side view of the same.

FIG. 11 is a plan view of an anchor bolt installation jig used for a partition part of a house foundation.

FIG. 12 is a side view of the same.

FIG. 13 is a plan view of an anchor bolt installation jig used for a partition cross corner section or a partition T corner section of a house foundation.

FIG. 14 is a side view of the same.

FIG. 15 is a plan view of an anchor bolt installation jig used at the entrance corner of a house foundation.

FIG. 16 is a side view of the same.

FIG. 17 is a sectional view showing how the anchor bolt installation jig is used.

FIG. 18 is a partial perspective view showing the state of use.

FIG. 19 is an exploded perspective view showing another example of an anchor bolt installation jig.

FIG. 20 is a sectional view showing the state of use thereof.

FIG. 21 is a perspective view showing another example of an anchor bolt installation jig.

FIG. 22 is a sectional view showing the state of use thereof.

FIG. 23 is a sectional view showing the anchor guide.

[Explanation of symbols]

1, 2, 3, 4, 5, 6, 7, 24 Various anchors constituting the anchor bolt installation jig, 8, 25 Anchor body as a substrate, 9, 55 Connecting pin, 12,
14, 30, 31 Notch as indicator, 13, 32
Through hole as an index, 16, 17 Notch edge as an index, 21 Anchor bolt, A-A, B-B
Dimension reference line, C formwork, M, N corners as indicators.

Claims (1)

[Claims] Claim 1: An anchor bolt installation tool that is installed between the upper ends of concrete formworks that are placed opposite each other during molding of foundation concrete for a building, and that includes a substrate that supports the anchor bolts that are planted on the foundation concrete. In the substrate (8, 25), the dimensional reference lines (A-A, B-B) of the foundation concrete (23) are provided on both the front and back surfaces
) position indicator (12, 13, 14, 16, 17, M
. An anchor bolt installation jig characterized in that the anchor bolt is selectively fitted into a hole at the upper end of a concrete formwork (C).