JPH0647498U - Fixtures for concrete formwork and concrete formwork - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a fixture and concrete formwork for concrete formwork that can be easily attached to and detached from the formwork and can be simplified at the construction site. One of the concrete mold fixing members 10 is fixed to one side surface of the weir plate 24, and a fitting groove into which the flange portion is detachably inserted between the other fixing member 10 and the weir plate 24. A step portion 15 forming 14 is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a concrete formwork fixture for fixing a weir plate and a concrete formwork provided with the fixture, which is used for slab concrete driving.

[0002]

[Prior art]

 As shown in FIG. 9, a conventional concrete formwork fixing bracket 2 is made of a reinforcing bar. As an example of this construction, a steel deck 6 is attached to the H-shaped steel 5 which is the basic structure of the building, the L-shaped steel 1 is placed and fixed on the H-shaped steel 5, and the flange of the L-shaped steel 1 is erected. The fixing fittings 2 are welded at appropriate intervals in the longitudinal direction. Then, the weir plate 3 is fixed on the L-shaped steel 1 by driving U-shaped nails 4 from the outside of each fixing metal fitting 2, and the lightweight concrete is placed in the mold composed of the weir plate 3 and the steel deck 6. After the concrete was hardened, the weir plate 3 was removed and unnecessary protruding parts of the fixture 2 were cut.

[0003]

[Problems to be solved by the device]

 However, since the concrete formwork fixing bracket 2 is welded to the L-shaped steel 1, it takes time for welding and cutting at the time of construction, which causes complication at the construction site. Therefore, in view of the above situation, an object of the present invention is to provide a concrete formwork fixture and a concrete formwork that can be easily attached to and detached from a form steel and can be simplified at a construction site.

[0004]

[Means for Solving the Problems]

 The present invention has taken the following means in order to achieve the above object. That is, a feature of the present invention is that in a concrete formwork fixture for fixing a weir plate to a flange portion of a form steel, one of the fixtures has a mounting hole for fixing to the weir plate, On the other hand, there is a fitting groove into which the flange portion is detachably inserted.

[0007] Furthermore, one of the concrete form fittings has a mounting hole for fixing to the dam plate, and the other has a fitting groove into which the flange portion is detachably inserted between the dam plate and the dam plate. In that it has a stepped portion. Further, one of the concrete metal fittings for concrete formwork is fixed to one side surface of the dam plate fixed to the flange portion of the shape steel, and the flange portion is removably inserted between the dam plate and the other fixing metal fitting. That is, a step portion is formed to form a fitting groove.

[0006]

[Action]

 According to the invention of claim 1, the fixing tool for concrete formwork is fixed to the mold steel only by inserting the flange portion of the mold steel into the fitting groove. Moreover, the fixing metal fittings can be fixed to the dam plate with nails or the like by using the mounting holes, whereby the dam plate is fixed to the shape steel. After hardening the concrete, the weir plate and the fixing bracket can be easily removed simply by pulling out the weir plate.

According to the second aspect of the present invention, the fixing tool for concrete formwork can be fixed to the dam plate with a nail or the like using the mounting hole, and the fitting formed between the fixing metal member and the dam plate. The dam plate is fixed to the mold steel by inserting the flange portion of the mold steel into the groove. According to the third aspect of the invention, the concrete formwork is fixed to the form steel by simply inserting the flange portion of the form steel into the fitting groove of the concrete formwork.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a fixture 10 for concrete formwork according to the present invention. The fixing bracket 10 is formed by welding a metal bending plate 12a having the same width as the fixing bracket main body 11a to one side surface of the metal strip-shaped fixing bracket main body 11a. A fitting groove 14 having a downward opening in a side view is formed between 11a and the bent plate 12a. Further, a mounting hole 13 for fixing the fixing bracket 10 to the dam plate 24 is formed in the upper portion of the fixing bracket body 11a.

FIG. 2 shows an example of construction using the fixing bracket 10, in which a steel deck 21 is attached to an H-shaped steel 22 for a floor foundation of a building, and an L-shaped steel 23 is placed on the H-shaped steel 22. It is fixed. Then, the flange portion is inserted into the fitting groove 14 so that the fixing metal fitting body 11a is located inside the flange portion of the L-shaped steel 23 which is erected, and is fitted and fixed. Similarly, the fixing metal fitting 10 is fitted and fixed at a predetermined interval in the longitudinal direction of the flange portion. Next, a long plate-shaped dam plate 24 made of wood is fixed to the side of the fixing metal fitting body 11a on which the bent plate 12a is not provided, by using the mounting holes 13 and the like. Then, concrete 25 is poured into a mold formed by the dam plate 24 and the steel deck 21, and after hardening, the dam plate 24 is removed together with the fixing metal fitting 10.

Unlike the conventional case, the fixing metal fitting 10 does not require any processing such as welding or cutting of the fixing metal fitting 10 at the time of construction, so that the construction work can be performed very easily, Since it can be used, the material cost can be reduced. FIG. 3 shows a second embodiment of the fixing tool 10 for concrete formwork. The fixing metal fitting 10 in the present embodiment is formed by integrally bending the fixing metal fitting body 11b and the bent plate 12b with one band-shaped metal plate. Since other points, actions and effects are the same as those in the previous example (FIGS. 1 and 2), the same reference numerals are used and the description thereof is omitted.

FIG. 4 shows a third embodiment of the fixture 10 for concrete formwork. In the figure, the fixing metal fitting 10 is formed such that the width of the fixing metal fitting body 11 is larger than the width of the bending plate 12, and the mounting holes 13 are formed at both upper end portions of the fixing metal fitting body 11. According to this, when the weir plate 24 is fixed to the flange portion of the L-shaped steel 23 so as to be adjacent thereto, the fixing metal fitting 10 is inserted and fixed to the flange portion so as to straddle the joint portion of each weir plate 24, and then attached. The holes 13 can be used to fix the ends of the barrier plates 24 with nails or the like.

FIG. 5 shows an example of construction using the fixing metal fitting 10 shown in FIGS. 1 and 4. In the figure, a dam plate 24 is fixed to the bent plate 12 side of the fixing metal fitting bodies 11a, 11. The other points, functions, and effects are the same as those shown in FIG. 2, and the description thereof will be omitted. FIG. 6 shows a fourth embodiment of the fixture 10 for concrete formwork. In the figure, the fixing metal fitting 10 has an attachment hole 13 formed in the upper part for fixing to the dam plate 24, and a fitting portion into which the flange part of the L-shaped steel 23 is detachably inserted between the fitting hole 13 and the dam plate 24. A step portion 15 for forming the groove 14 is formed.

When the fixing metal fitting 10 is used for construction, the fixing metal fitting 10 is fixed with nails using the mounting holes 13 at predetermined positions in the longitudinal direction of the dam plate 24 made of wood. As a result, the fitting groove 14 is formed between the weir plate 24 and the fixing bracket step portion 15, so that the weir plate 24 is fitted inside the flange portion of the L-shaped steel 23 which is erected. Insert the groove 14 into the flange and fit and fix it. Thereafter, the construction is carried out in the same manner as in the first embodiment.

FIG. 7 shows a fifth embodiment of the fixture 10 for concrete formwork. In the figure, the fixing metal fitting 10 has a daruma-shaped mounting hole 13 formed in the upper part for fixing to the dam plate 24, and a flange portion of the shape steel 23 is detachably inserted between the fixing metal fitting 10 and the dam plate 24. A step portion 15 that forms the fitting groove 14 is formed. Further, on one side surface of the metal barrier plate 24, projections 26 having a flange at the tip are fixed at appropriate intervals in the longitudinal direction. The protrusion 26 is insertable into and engageable with the mounting hole 13 of the fixture 10.

When the fixing metal fitting 10 is used for the construction, after fixing the fixing metal fitting 10 to the projection 26 of the barrier plate 24, the fitting groove is formed in the flange portion of the L-shaped steel 23 as in the fourth embodiment. Insert 14 and fix. In the above embodiment, since the fixing member 10 is detachably attached to the barrier plate 24, even when the thickness of the flange portion of the L-shaped steel 23 is changed, the step portion 15 corresponding to the thickness is formed. By preparing the above-mentioned fixing metal fitting 10, it becomes possible to fix to the shape steel 23 having different flange thicknesses.

FIG. 8 shows an embodiment of the concrete formwork 16 according to the present invention. This formwork 16 is formed by spot-welding a fixing metal fitting 10 formed by bending a strip of metal piece on one side surface of a metal-made long weir board 24 at appropriate intervals in the longitudinal direction. . The lower part of the fixing metal fitting 10 is step-bent so as to form a fitting groove 14 with the dam plate 24, and the hook 20 bent to the dam plate 24 side at a substantially right angle is formed in the upper part. Has been done.

As an example of construction using this concrete formwork 16, as shown in the figure, the fitting groove of the formwork 16 is arranged so that the barrier plate 24 is inside the flange portion of the L-shaped steel 23 which is erected. Insert 14 into the flange and fit and secure. Next, the lightweight concrete 25 is poured into the mold formed by the mold 16 and the steel deck 21, and the mold 16 is removed after the concrete 25 is hardened. At this time, the mold 16 can be easily removed by inserting a ball or the like between the hook 20 of the mold 16 and the concrete 25 and pulling the mold 16 upward. The hook 20 of the fixture 10 may be formed by bending the upper portion of the mold 16.

The present invention is not limited to the above-described embodiment, and one mounting hole 13 is provided in FIGS. 1 and 3 and two mounting holes 13 are provided in FIG. 4, but the number is not limited to this. Further, instead of the mounting hole 13 of FIG. 4, notches may be formed from both end edges of the fixing metal body 11, and the notches may be used as the mounting holes 13.

[0019]

[Effect of device]

 ADVANTAGE OF THE INVENTION According to this invention, by using the fixing metal fittings for concrete formwork or concrete formwork, the fixing metal fittings for concrete formwork or concrete formwork can be easily attached to or detached from the form steel without performing welding or cutting work during construction. Can be simplified at the construction site.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a fixture for a concrete formwork according to the present invention.

FIG. 2 is a simplified cross-sectional view showing the construction example of FIG.

FIG. 3 is a perspective view showing a second embodiment of the concrete form fitting.

FIG. 4 is a perspective view showing a third embodiment of a concrete form fitting.

FIG. 5 is a simplified perspective view showing another construction example.

6A and 6B show a fourth embodiment of a fixing tool for concrete formwork, FIG. 6A being a front view and FIG. 6B being a side view.

FIG. 7 shows a fifth embodiment of a fixing tool for concrete formwork, (a) showing a front view and (b) showing a side view.

FIG. 8 is a perspective view showing an embodiment of a concrete formwork according to the present invention.

FIG. 9 is a simplified perspective view showing a conventional example.

[Explanation of symbols]

 10 Concrete formwork fixture 13 Mounting hole 14 Fitting groove 15 Step 16 Concrete formwork 23 Steel type (L type steel) 24 Weir plate

Claims (3)

[Scope of utility model registration request] 1. A concrete formwork fixing metal fixture for fixing a weir plate to a flange portion of a shape steel, wherein one of the fixing metal fixtures has a mounting hole for fixing to the weir plate, and the other flange portion is detachable. A fixture for a concrete formwork having a fitting groove that can be freely inserted. 2. A concrete formwork fixing fixture for fixing a weir plate to a flange portion of a shape steel, wherein one of the fixing fixtures has a mounting hole for fixing to the weir plate, and the other has a mounting hole. A fixture for a concrete formwork, characterized in that it has a stepped portion that forms a fitting groove into which the flange portion is detachably inserted. 3. One of the concrete form fittings is fixed to one side of the dam plate fixed to the flange of the form steel,
A concrete formwork, characterized in that a step portion is formed on the other side of the fixing member to form a fitting groove into which the flange portion is removably inserted between the weir plate.