JP7100838B2 - Formwork fixing bracket, how to install the formwork - Google Patents

Description

The present invention relates to a formwork fixing metal fitting capable of fixing a corner portion of a formwork and a method of installing a formwork using the same.

For example, when constructing a concrete foundation, the foundation is constructed by installing a concrete formwork on the discarded concrete and placing concrete in the space surrounded by the formwork. In this case, for example, it is necessary to install and fix the formwork at a predetermined position on the discarded concrete.

As a method of fixing the formwork, for example, there is a method of constructing a concrete pouring space by arranging fluttering materials such as angles and pipes vertically and horizontally on the outer peripheral portion of the formwork (Patent Document 1).

In addition, wedges orthogonal to the main body are formed on the left and right wings of the boomeran-shaped main body, and the square tightening metal fittings placed inside the formwork are fixed to the stay rod to sandwich the formwork, and the slits of the stay rod are used. There is a method of inserting a wedge portion to fasten the formwork (Patent Document 2).

Japanese Unexamined Patent Publication No. 2006-9384 Japanese Unexamined Patent Publication No. 9-144313

However, in the conventional method, the fixing structure of the formwork is complicated, and man-hours for installing and fixing the formwork are required. Therefore, a method of fixing the formwork with a simpler structure is required.

Further, the installation position of the formwork is determined in advance, and at the installation position of the formwork, for example, marking is performed on the upper surface of concrete or the like. However, if the fixing member is placed on the outer peripheral side of the formwork and connected after the formwork is placed, the formwork may be misaligned during work, and it may be difficult to install the formwork as marked out. be. In particular, at the corners of the formwork, it is not easy to accurately arrange and fix the pair of formwork according to the markings.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a formwork fixing metal fitting or the like which is excellent in construction workability and can arrange a formwork with high accuracy.

In order to achieve the above-mentioned object, the first invention is a fixing bracket for a mold, which stands up against a flat plate portion and the flat plate portion and is formed substantially parallel to the wall portion at a predetermined angle with each other. A pair of wall portions to be formed, a pair of straight portions formed in the flat plate portion and formed at a predetermined angle, and a hole formed in the flat plate portion and formed in the vicinity of an intersection of extension lines of the straight portion. Alternatively, the notch portion and a pair of protrusions that stand up against the flat plate portion and whose ends are located on the extension line of the straight portion are provided at positions facing the wall portion and correspond to each other. The mold fixing bracket is characterized in that the distance between the wall portion and the straight line portion and the distance between the wall portion and the end portion of the protrusion portion are substantially the same.

According to the first invention, since a hole or a notch is formed, it is easy to align the position of the intersection of the markings, and it is possible to easily install the formwork fixing bracket in the concrete at an accurate position. can. Further, since the formwork can be arranged along the wall portion, the formwork can be easily installed.

Further, by forming the guide portion, the formwork can be inserted between the wall portion and the guide portion, so that the formwork can be easily arranged.

In the second invention, marking is performed at the installation position of the formwork on the upper surface of the concrete, the positions of the holes or notches of the first formwork fixing bracket are aligned with the intersections of the black lines, and the straight portion is marked with the black lines. The formwork fixing metal fittings are arranged according to the straight line of the above, the formwork fixing metal fittings are fixed to concrete, and a pair of formwork is installed and fixed to the first formwork fixing metal fittings, and the pair of formwork is fixed. The second formwork fixing bracket is arranged on the upper part of the formwork, and the hole or notch of the second formwork fixing bracket is aligned with the butted portion of the pair of formwork and fixed . This is a characteristic formwork installation method.

According to the second invention, since the formwork fixing bracket is first installed on the concrete and then the formwork is installed on the formwork fixing bracket, the formwork can be easily installed and the formwork can be easily positioned. Is.

Further, by installing the formwork fixing metal fittings on the upper part of the formwork, it is possible to suppress the deviation of the formwork and fix the formwork reliably.

According to the present invention, it is possible to provide a formwork fixing metal fitting or the like which is excellent in construction workability and can arrange a formwork with high accuracy.

The perspective view which shows the formwork fixing metal fitting 1. The plan view which shows the state which installed the formwork fixing metal fitting 1. The plan view which shows the state which installed the formwork 17 on the formwork fixing metal fitting 1. The plan view which shows the state which fixed the formwork fixing metal fitting 1 to the formwork 17. The front view which shows the state which fixed the formwork fixing metal fitting 1 to the formwork 17. The perspective view which shows the formwork fixing metal fitting 1a. The plan view which shows the state which installed the formwork fixing metal fittings 1a. The plan view which shows the state which installed the formwork 17 on the formwork fixing metal fitting 1a. The plan view which shows the state which fixed the formwork fixing metal fitting 1a to the formwork 17.

Hereinafter, the formwork fixing bracket 1 according to the embodiment of the present invention will be described. FIG. 1 is a perspective view showing a formwork fixing bracket 1. The formwork fixing metal fitting 1 is a metal fitting for fixing the formwork, and is composed of a flat plate portion 3, a wall portion 5, and the like.

The flat plate portion 3 is a substantially flat portion, and a pair of wall portions 5 that stand up substantially perpendicular to the flat plate portion 3 are formed at the end portion of the flat plate portion 3. The pair of wall portions 5 are formed at a predetermined angle with each other. In the illustrated example, the pair of wall portions 5 are formed at an angle of approximately 90 degrees.

A straight line portion 7 is formed on a part of the flat plate portion 3. The straight line portion 7 is formed substantially parallel to each wall portion 5. That is, the pair of straight lines 7 are formed at the same angle as the pair of wall portions 5. The wall portion 5 and the straight portion 7 are formed at a predetermined interval. The distance between the wall portion 5 and the straight portion 7 corresponds to the thickness of the formwork.

Holes 9 are formed on the extension lines of the respective straight line portions 7 in the vicinity of the intersections of the respective extension lines. The hole 9 is, for example, a circular through hole.

The formwork fixing bracket 1 can be integrally formed from a metal plate by press working, for example. A fixing hole for fixing the formwork or the like may be formed in the flat plate portion 3 or the wall portion 5.

Next, a method of installing the formwork on the waste concrete by using the formwork fixing bracket 1 will be described. First, as shown in FIG. 2, the ink is printed on the installation position of the formwork on the upper surface of the concrete 11 to form the ink line 13. The chalk line 13 is formed, for example, at the concrete placement outer surface position of the concrete foundation to be constructed. That is, the black line 13 is the inner surface position of the formwork.

Here, a plurality of formwork is installed so as to surround the casting range of the concrete foundation. Therefore, there is a portion where the formwork is butted at a predetermined angle. In this case, the chalk lines 13 intersect at a predetermined angle.

Since the formwork fixing bracket 1 has a hole 9, by arranging the formwork fixing bracket 1 so that the intersection 15 of the black lines 13 is aligned with the position of the substantially center of the hole 9, the formwork fixing bracket 1 is surely placed at the formwork installation position. The fixing metal fitting 1 can be arranged. At this time, the formwork fixing bracket 1 is adjusted so that each straight line portion 7 matches the position of the straight line of each black line 13. In this state, the formwork fixing bracket 1 is fixed to the concrete 11 by the fixing holes (not shown) formed in the flat plate portion 3. It is desirable that there are at least two fixing holes for fixing to the concrete 11, and one of them may be substituted with the hole 9.

Next, as shown in FIG. 3, the formwork 17 is arranged on the formwork fixing bracket 1. At this time, a part of the back surface of the formwork 17 is brought into contact with the inner surface of the wall portion 5, and the butt portion of the pair of formwork 17 is adjusted so as to come to the position of the substantially center (intersection point 15) of the holes 9. By doing so, the installation position of the formwork 17 can be easily grasped, and the formwork 17 can be reliably arranged at a desired position. The formwork 17 may be made of wood or metal. Further, the formwork 17 is fixed to the formwork fixing bracket 1 by a fixing hole (not shown) formed in the wall portion 5.

Next, as shown in FIG. 4, the formwork fixing bracket 1 is installed on the upper part of the pair of formwork 17. At this time, since the butt portion between the formwork 17 can be visually recognized from the hole 9, it is possible to suppress the deviation of the formwork 17. The formwork fixing bracket 1 is fixed to the formwork 17 by fixing holes (not shown) formed in the wall portion 5 and the flat plate portion 3.

FIG. 5 is a front view showing the installation state of the formwork 17. In addition, a reinforcing metal fitting such as an L angle may be separately installed from the outside at the butt portion (corner portion) between the formwork 17 to fill the gap. When the angle of the concrete foundation to be cast is other than 90 degrees, the formation angle of the wall portion 5 and the straight portion 7 may be designed according to the angle.

As described above, according to the present embodiment, since the installation position of the formwork 17 can be easily grasped, the formwork fixing bracket 1 can be easily and accurately installed. Further, since the formwork 17 may be arranged along the wall portion 5 of the formwork fixing bracket 1 and the tip of the formwork 17 may be aligned with the hole 9, the alignment of the formwork 17 is easy. Therefore, the formwork 17 can be arranged with high accuracy.

Further, by arranging the formwork fixing metal fitting 1 also on the upper end portion of the formwork 17, it is possible to suppress the deviation of the formwork 17. At this time, since the butt position of the formwork 17 can be visually recognized by the hole 9, the formwork 17 can be fixed with high accuracy.

Further, by forming a fixing hole in the flat plate portion 3, it can be used when fixing the formwork fixing metal fitting 1 on the concrete 11. Further, by forming a fixing hole in the flat plate portion 3 or the wall portion 5, it can be used when fixing the formwork 17 and the formwork fixing metal fitting 1.

Next, the second embodiment will be described. FIG. 6 is a perspective view of the formwork fixing bracket 1a according to the second embodiment. In the following description, configurations having the same functions as the formwork fixing bracket 1 and the like are designated by the same reference numerals as those in FIGS. 1 to 5, and duplicate description will be omitted.

The formwork fixing bracket 1a has almost the same configuration as the formwork fixing bracket 1, but is different in that the protrusion 19 is formed. Further, it is different in that a notch portion 9a is formed in place of the hole 9 with the formation of the protrusion portion 19.

The protrusion 19 stands substantially perpendicular to the flat plate portion 3 and is formed at a position facing each wall portion 5. Further, the position of the protrusion 19 facing the wall portion 5 is located on the extension line of the straight line portion 7. That is, the distance between the wall portion 5 and the straight line portion 7 and the distance between the wall portion 5 and the protrusion 19 are substantially the same.

In the illustrated example, the protrusion 19 is formed by bending a part of the flat plate portion 3. At this time, the protrusion 19 stands up so that the bent portion is in a direction substantially perpendicular to the wall portion 5. In this case, the protrusion 19 and the wall 5 are oriented substantially vertically. The formation position and formation direction of the protrusion 19 are not limited to the illustrated example.

The notch portion 9a is formed in the vicinity of the intersection of the extension lines of the straight line portion 7. The notch portion 9a has the same function as the hole 9 described above. That is, a penetration portion with respect to the flat plate portion 3 such as a hole 9 or a notch portion 9a may be formed in the vicinity of the intersection of the extension lines of the straight line portion 7.

Next, a method of installing the formwork 17 on the concrete using the formwork fixing bracket 1a will be described. First, as shown in FIG. 7, marking is performed on the installation position of the formwork on the upper surface of the concrete 11 to form the marking line 13. The chalk line 13 is formed, for example, at the concrete placement outer surface position of the concrete foundation to be constructed. That is, the black line 13 is the inner surface position of the formwork.

Next, as described above, the formwork fixing bracket 1a is arranged so that the intersection 15 of the black lines 13 is aligned with the position of the substantially center of the notch portion 9a. In this state, the formwork fixing bracket 1a is fixed to the concrete 11 by the fixing holes (not shown) formed in the flat plate portion 3.

Next, as shown in FIG. 8, the formwork 17 is arranged on the formwork fixing bracket 1a. At this time, a part of the back surface of the formwork 17 is brought into contact with the inner surface of the wall portion 5, and the formwork 17 is inserted between the wall portion 5 and the protrusion 19. Further, the butt portion of the pair of formwork 17 is adjusted so as to come to the position of the substantially center (intersection point 15) of the notch portion 9a. By doing so, the formwork 17 can be reliably arranged at a desired position. The formwork 17 is fixed to the formwork fixing bracket 1a by a fixing hole (not shown) formed in the wall portion 5.

Next, as shown in FIG. 9, the formwork fixing metal fittings 1a are installed on the upper part of the pair of formwork 17. At this time, since the butt portion between the formwork 17 can be visually recognized from the notch portion 9a, it is possible to suppress the deviation of the formwork 17. The formwork fixing bracket 1a is fixed to the formwork 17 by fixing holes (not shown) formed in the wall portion 5 and the flat plate portion 3.

As described above, according to the second embodiment, the same effect as that of the first embodiment can be obtained. Further, since the protrusion 19 is formed, the positioning of the form 17 becomes easier and the misalignment can be suppressed.

Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention does not depend on the above-described embodiments. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs to.

1, 1a ………… Formwork fixing bracket 3 ………… Flat plate part 5 ………… Wall part 7 ………… Straight line part 9 ………… Hole 9a ………… Notch part 11 ………… Concrete 13 ………… Chalk line 15 ………… Intersection 17 ………… Formwork 19 ………… Protrusion

Claims (3)

It is a fixing bracket for formwork,
Flat plate and
A pair of wall portions that stand up against the flat plate portion and are formed at a predetermined angle with each other.
A pair of straight portions formed on the flat plate portion and formed substantially parallel to the wall portion at the predetermined angle, and a pair of straight portions.
A hole or a notch formed in the flat plate portion and formed near the intersection of the extension lines of the straight line portion,
At a position facing the wall portion, the end portion is located on an extension line of the straight portion so as to stand up against the flat plate portion.A pairWith protrusions
Equipped withdeath,
The corresponding distance between the wall portion and the straight portion and the distance between the wall portion and the end portion of the protrusion are substantially the same. Formwork fixing brackets that are characterized by The formwork fixing bracket according to claim 1, wherein a fixing hole for fixing the formwork is formed in the wall portion. The method for installing a formwork using the formwork fixing bracket according to claim 1 or 2.
Mark the location of the formwork on the top of the concrete and mark it.
The position of the hole or notch of the first formwork fixing bracket is aligned with the intersection of the chalk lines, the formwork fixing bracket is arranged so that the straight line portion is aligned with the straight line of the chalk line, and the formwork is fixed to concrete. Fix the metal fittings,
A pair of formwork is installed and fixed to the first formwork fixing bracket.
The second formwork fixing bracket is arranged on the upper part of the pair of formwork, and the holes or notches of the second formwork fixing bracket are aligned with the butt portion of the pair of formwork and fixed. How to install the formwork, which is characterized by doing.

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