JPS6335787B2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to multi-level stacking of concrete forms for constructing, for example, earth retaining walls for residential lots, high cloth foundations for houses, concrete walls in basements, garages, bathrooms, etc. It is related to construction methods.

PRIOR TECHNOLOGY In general, concrete formwork is installed so that it faces each other at regular intervals using spacing holders, but when pouring tall concrete walls such as the one mentioned above, this formwork is placed at regular intervals. Stacked in multiple stages using holders. In this case, when concrete is placed between the forms, a tremendous pressure is applied outward to the inner surface of the forms. In order to resist this pressure and maintain the parallelism between the forms and the perpendicularity of the form, several inner clamping rods are arranged in parallel on the outer surface of the form to clamp the form. Since this inner clamping rod alone cannot withstand the concrete pressure, several outer clamping rods that clamp the inner clamping rod on the outer surface of the inner clamping rod are set perpendicular to the inner clamping rod. He was tied up with iron wire. For this reason, there was a drawback in that a great deal of labor and work time was required to assemble the outer clamping rod.

Purpose This invention was made to eliminate the above-mentioned conventional drawbacks, and its purpose is to improve the parallelism between both formworks and the verticality of each formwork against the pressure of poured concrete. To provide a new concrete formwork multi-tiered construction method that can reliably prevent the formwork from bending or being damaged by maintaining its rigidity, and also allows the formwork to be easily assembled. be.

Embodiment Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings.

First, to explain the structure of the fastener, as shown in FIGS. a pair of elongated holes 4 as tightening holes extending in the direction;
5 are formed respectively, and the elongated hole 4 is located closer to the tip side than the elongated hole 5. A pair of elongated holes 6 and 7 as tightening holes extending in the longitudinal direction are formed in the lower portions of the support parts 2 and 3, respectively, and the elongated holes 6 are connected to the fastener main body 1 through the elongated holes 7.
located on the tip side. Further, the elongated hole 6 is located on the proximal side of the elongated hole 4, and the elongated hole 7 is located on the proximal side of the elongated hole 5.

At the base end of the fastener body 1, a connecting member 8 made of a steel plate bent into a cross-sectional shape is welded and protruded so that its open part faces upward, and at the bottom of the tip of the connecting member 8, a connecting pin 9 is provided downward. It is welded and protruded to. The connecting member 8 and the connecting pin 9 constitute a connecting portion.

Both sides 10a, 10 of a plate-shaped wedge member 10 to be driven into the long holes 4, 5 or into the long holes 6, 7
b are formed into a mutually oblique wedge shape. Next, the multi-level stacking method of concrete formwork in this embodiment will be explained with reference to FIGS. 3 to 9. In this embodiment, a formwork for a cloth foundation is used as the concrete formwork.

Spacing holders 12 are placed on the base concrete 11.
is placed, and the distance between the lower ends of the pair of lower formworks 13 and 14 is maintained by the spacer 12. As shown in FIG. 4, this spacer 12 is
A pair of outer regulating pieces 12a, 12b are formed by bending both ends of a strip-shaped plate material in the same direction, and a pair of inner regulating pieces are placed at a certain distance inward from each outer regulating piece 12a, 12b. The outer regulating pieces 12a, 12 are formed by cutting and raising the outer regulating pieces 12c, 12d.
The lower ends of the lower formworks 13 and 14 are fitted and locked between the inner regulating pieces 12c and 12d. The interval between the upper ends of the lower formworks 13 and 14 is maintained by a spacing holder 15. As shown in FIG. 5, this spacing holder 15 has a pair of inner regulating pieces 15b, 15c bent in opposite directions on both side edges of a spacing holder main body 15a. Then, bend the pair of outer regulating pieces 15d and 15e in the same direction as the inner regulating piece 15b, and then
A pair of outer regulating pieces 15f, 15g are bent at both ends of the other side edge in the same direction as the inner regulating piece 15c, and a lower formwork is provided between the outer regulating pieces 15d, 15e and the inner regulating piece 15b. The upper ends of 13 and 14 are fitted and locked. A pair of pin holes 16, 16 are provided at both ends of the spacer main body 15a on the outside of the lower formworks 13, 14, and as shown in FIGS. 5 and 6, the lower formwork 13 , 14, a plurality of linear recesses 17 are formed intermittently.

Next, the lower ends of the pair of middle formworks 18, 19 are fitted and locked between the inner regulating piece 15c and the outer regulating pieces 15f, 15g of the spacer 15, and the lower ends of both middle formworks 18, 19 are fitted and locked. The spacing between the sections is maintained. A pair of upper formworks 21 and 2 are placed on both middle formworks 18 and 19 via a spacer holder 20 similar to the spacer holder 15.
2 are stacked up, and the distance between the upper ends of both upper formworks 21 and 22 is maintained by a distance holder 23 similar to the distance holder 15. In addition, each interval holder 1
2, 15, 20, 23 are each formwork 13, 14, 1
8, 19, 21, and 22 are arranged in parallel according to their lengths.

Horizontal clamping rods 2 in the shape of square pipes as inner clamping rods are placed in contact with the outer surfaces of the lower formworks 13, 14, the middle formworks 18, 19, and the upper formworks 21, 22.
4 to 29 are arranged vertically in parallel. The fasteners of this embodiment are connected to both ends of each of the spacer retainers 15, 20, 23 by inserting connecting pins 9 into pin holes 16 from above. Each side clamp 24~
Square pipe-shaped vertical clamping rods 30 and 31 as outer clamping rods are arranged so as to clamp 29 and to pass between the support parts 2 and 3 of the fastener of this embodiment. As shown in FIG. 7, when the wedge member 10 is driven into the elongated holes 4 and 5 from its tapered end, one side 10a of the wedge member 10 is inserted into the outer ends of the elongated holes 4 and 5 ( The other side surface 10b abuts along the outer surface of the vertical clamping rod 30, so that the vertical clamping rod 30 contacts the horizontal clamping rod 24,
It is tightened and fixed to the outer surfaces of 26 and 28. The vertical clamping rod 31 is similarly tightened and fixed to the outer surface of the horizontal clamping rods 25, 27, and 29. In this case, the vertical clamping rod 3
The outer surfaces of 0 and 31 must protrude outward from the inner ends of the elongated holes 4 and 5 (the proximal end of the fastener body 1).

By pouring concrete between the upper formworks 21 and 22, between the middle formworks 18 and 19, and between the lower formworks 13 and 14, a concrete wall of a desired height can be formed. During concrete pouring, great pressure is applied outward to the inner surfaces of each formwork 13, 14, 18, 19, 21, and 22;
Horizontal clamping rods 24 to 29 are assembled to the outer surfaces of the formworks 13, 14, 18, 19, 21, and 22, respectively, and vertical clamping rods 30, 31 is assembled, the spacing maintaining strength of the formwork is sufficient.

Therefore, since the parallelism between both formworks and the perpendicularity of each formwork are reliably maintained, it is possible to mold a cloth foundation with a beautiful appearance without distortion or unevenness. In addition, since assembling in this way prevents each formwork from curving, the joints of the upper and lower formworks may become misaligned in areas where spacers are not installed, causing concrete to leak outside. There is no risk of omission.

After pouring concrete, the fasteners of this embodiment, the vertical clamping rods 30 and 31, and the horizontal clamping rods 24 to 2
9. Each formwork 13, 14, 18, 19, 21, 22
The spacing holder 23 is removed, and each spacing holder 12,
15 and 20 are consumables buried in concrete. The exposed portions of the spacers 15 and 20 outside the concrete are broken off along the aforementioned recess 17.

In addition, as shown in FIG. 8, when using the horizontal clamping rod 32 and the vertical clamping rod 33, which are rectangular pipes with small cross-sectional dimensions, the wedge member 10 is inserted into the elongated hole 6 and the elongated hole from its tapered end. 7, the vertical clamping rod 33 is tightened and fixed to the outer surface of the horizontal clamping rod 32.

Furthermore, as shown in FIG. 9, even when using the horizontal and vertical cylindrical rods 34 and 35 with small cross-sectional dimensions, the wedge member 10 can be inserted into the elongated holes 6 and 7 from their tapered ends. One side 1 of the wedge member 10
0a is in contact with the outer ends of the elongated holes 6 and 7 (the distal end of the fastener body 1), and the other side surface 10b is in contact with the vertical clamping rod 3.
5, the vertical clamping rod 35 is in contact with the outer surface of the horizontal clamping rod 3.
It is tightened and fixed to the outer surface of 4.

In other words, the fastener of this embodiment can be attached to the vertical wedge attachment rods 30, 31, the vertical wedge attachment rod 33, or the vertical wedge attachment simply by driving the wedge member 10 into the long holes 4, 5 or 6, 7 The rod 35 can be tightened and fixed, making the work extremely simple. In this case, the tool for driving the wedge member 10 may be a hammer, and no special tool is required. Moreover, the spacer retainers 15, 20,
If a pin hole 16 is formed in 23, the fastener of this embodiment can be connected to the spacer retainers 15, 20, 23 by simply inserting the connecting pin 9 into the pin hole 16, which is extremely convenient. This is a simple assembly method. Furthermore, even if the cross-sectional shapes and cross-sectional dimensions of the horizontal rods 24 to 29, 32, 34 and the vertical rods 30, 31, 33, 35 are different, the different vertical rods 30 can be fixed with one fastener. , 31, 33, and 35 can be tightened and fixed, providing versatility.

Effects As detailed above, the present invention installs a pair of concrete formworks facing each other, and provides at least one concrete formwork that engages with the outer surface of both formworks between the lower ends and the upper ends of both formworks. After interposing a spacing holder having two outer regulating pieces and an inner regulating piece regulating the inner surfaces of the concrete formworks on both sides to maintain the interval between the two formworks at a predetermined width, A plurality of concrete formworks are stacked on top of both formworks, spaced in the same manner using spacing holders, and then a plurality of concrete formworks are stacked on top of both formworks, with each formwork on both sides being sandwiched in contact with the outside surface of each formwork. In addition to arranging the inner book clamping rods in parallel, a plurality of outer clamping rods are arranged so as to intersect with each inner clamping rod while being in contact with the outer surface of each of these inner clamping rods. Connecting parts provided at the proximal end of the fastener main body having a substantially planar shape and having connecting pins at the bottom are removably attached to both ends of each of the spacer retainers, respectively, using the connecting pins, and By driving wedge members into the tightening holes provided on both side support parts of the fastener body, each outer clamping rod is partially supported by the fastener so that it can move inwardly, and the fastener The driving operation in the main body clamps and holds each inner clamping rod between the outer surface of each concrete formwork and the inner surface of each outer clamping rod, thereby improving the parallelism between both formworks and each Since the verticality of the formwork can be maintained, a cloth foundation with a beautiful appearance without distortion or unevenness can be formed, and the formwork can be prevented from being bent or damaged.

In addition, the tightening tool can be easily assembled by inserting the connecting pin into the spacer, and furthermore, by driving wedge members into the tightening holes provided on both side support parts of the tightening tool body. As a result, the outer clamping rods move inward to clamp and hold each of the inner clamping rods between the outer surface of each concrete formwork and the inner surface of each outer clamping rod. This has the excellent effect of making it easier to assemble the frame.

[Brief explanation of drawings]

The drawings show an embodiment embodying the present invention, in which FIG. 1 is an exploded perspective view showing a fastener and a wedge member, FIG. 2 is a partial sectional view showing the fastener,
3 is a side sectional view showing the assembly structure, FIG. 4 is a perspective view showing the spacer, FIG. 5 is an exploded perspective view showing the assembly structure, and FIG. 6 is a sectional view of the spacer. 7 to 9 are partial sectional views showing the assembly structure. Fastener body...1, spacer holder...12,1
5,20,23, Concrete formwork...13,1
4, 18, 19, 21, 22, horizontal clamping rods as internal clamping rods...24-29, vertical clamping rods as external clamping rods...30, 31.

Claims (1)

[Claims] 1 A pair of concrete forms 1 facing each other
3 and 14, and between the lower ends and the upper ends of both the formworks 13 and 14, at least two outer regulating pieces 12a that engage with the outer surfaces of both the formworks 13 and 14,
12b, 15d, 15g and an inner regulating piece 1 regulating the inner surfaces of the concrete formworks 13, 14 on both sides.
2c, 12d, 15b, 15c are respectively interposed between the two formworks 1.
After maintaining the interval between the molds 13 and 14 at a predetermined width, spacer retainers 15 and 2 are placed on the upper surfaces of both the formworks 13 and 14.
Concrete formworks 18, 19, 21, 22 with their spacing maintained in the same manner as shown in Fig.
A plurality of inner clamping rods 24 to 29 are arranged in parallel so as to sandwich the formworks 13, 14, 18, 19, 21, 22 on both sides while being in contact with the outer surfaces of the rods 19, 21, 22, and Inner clamping rod 24-29
Each inner clamping rod 24 to 29 is in contact with the outer surface of the
A plurality of outer clamping rods 30, 31 intersect with each other.
and, together, each of the spacing holders 15, 2
0 and 22, a connecting pin 9 is provided at the base end of the fastener body 1, which has a substantially planar shape, and extends downwardly.
The connecting parts 8 and 9 having the above-mentioned shapes are removably attached using their connecting pins 9, and the wedge members 10 are driven into the tightening holes 4 to 7 provided in the supporting parts 2 and 3 on both sides of the fastener main body 1. By inserting the outer clamping rods 30 and 31 inwardly, the fastener 1 partially supports each of the outer clamping rods 30 and 31, and by the driving operation in the fastener main body 1, each of the concrete formworks 13 and 14 ,1
The outer surfaces of 8, 19, 21, 22 and each outer clamping rod 3
0 and 31, each of the inner clamping rods 24
A multi-tiered concrete formwork construction method characterized by sandwiching and holding ~29.