JPS6378965A - Mold frame for executing concrete floor - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to formwork for concrete floor construction (Japanese Patent Laid-Open No. 56
- No. 9655), which brought great benefits to the construction of concrete floors, but the present invention further improves this and creates a formwork that significantly reduces the "cross-sectional loss" that is the drawback of the invention. The purpose is to obtain.

Embodiments of the invention will be described with reference to the drawings.

In the figure, (1) shows the formwork of the first embodiment, and the formwork (1)
) is approximately rectangular and has the required area, and the horizontal plate (
2) A reinforcing rib (51 (5
1... are bent in parallel to each other by the required number, and at the apex of the triangular reinforcing rib (5), the above-mentioned both sides i
(The tops of 31131 should come into contact with each other to form a closed apex [31.) Fold down the connecting piece (6) to the side part of 10,000 parallel to the through hole and reinforcing rib (5) shown in the figure. (7
) is a hook part formed over the required width (A) at both ends of the formwork (1), and the end of the bottom surface (4) of the reinforcing rib is crushed by a press machine, and the tip part is (8) is superimposed on the back surface of the horizontal plate (2), forming the first W (810 rear side (91) and the slope !'IIt- which connects to the bottom surface (4) of the reinforcing rib), and also forming the continuous piece ( 6) Cut the end of the latching part (the rear side of the force (
9) Form a sloping side ``ullt'' with the same inclination as the slant opening α.In addition, in addition to forming hooking parts at both ends of the formwork, as shown in Fig. 6, In the case of a long formwork, it is also possible to form a concave portion (12) in the center of the form that has approximately the same shape as the one described above.As shown in Fig. 1 and Fig. α2 is a concrete beam (
4) Place the bridge directly on the top surface, fit the connecting pieces (6) of adjacent formwork into the gaps between the outermost reinforcing ribs (5), and lay a large number of formwork. ε of steel concrete on top surface
This is what makes it easy to use.

As shown in FIGS. 1, 2, 6, and 7, push the end of the bottom surface (4) of the reinforcing rib (5) at the hooking portion (7) or the recessed portion σ2. The most crushed part (8) and (8)
(141C or reinforcing rib (5) and (
5) The required @ko (or d>
) and the required length - (also 1:>, ), a rectangular notch (151 (or notch window G'J)'kJI is provided.

In FIG. 3, (formwork of the second embodiment of xira,
A cross-section parallel zigzag consisting of both side walls +31+31 and the bottom surface (4) expanding downward on the lower surface side of the approximately rectangular horizontal plate (2) is bent υ, and the top part of the triangular shape is opposite to each other. The closing apex portion 113 is formed by contact (7), which is a hook formed at both ends of the formwork +13 over the required width (spanning), and is pressed against the surface of the horizontal plate (21 by reinforcement). It is formed horizontally in the middle part of both sides. (8) is the slope connecting the horizontal plate (21 and the bottom surface (41) of the reinforcing rib (51) from the rear side of the hooking part (force). +91 /li cut There is an arrow notch, and both ends of the connecting piece (6) are formed by cutting the hooking part (7) and the slope (8) over a long length. As shown in FIG. 7, it is also possible to form a concave part [12+] substantially the same shape as the above in the central part if the overall length is long.

As shown in Fig. 5 and Fig. 7, the formwork (1) is connected to the hanging part (
Place the force or recess az directly on the top surface of the concrete beam.

When using the formwork of the present invention to construct a floorboard having a step in the - section, as shown in Fig. 5, the formwork of the second English example (1 ) is laid, and on the outside a9 where the floor slab is to be formed thickly, the reinforcing ribs (5) are crushed toward the horizontal plate (2) as shown in the above-mentioned Example 1 to make it horizontal with the horizontal plate (2). The formwork (1) in which the hanging part (7) has been formed is completely installed, and the intermediate flat part U41 (also the required width side (or ) and the required length (or).As mentioned above, when constructing a concrete floor, the concrete between the upper and lower parts of the notch sunk near the hanging part (force (7)) are continuous, and the hooking part (71(
7'l (also, the recessed part az or na'zr) is placed on the concrete beam (in consideration of the width a of the upper surface part of the notch [+51 (or notch) window us
(+51 width (sha) (6)). For this purpose, the notch (151041 @ eave) (b)
(Or, the width of the cutout window 09σS is lliiFl(M) of the hooking part (71+7) (or the recessed part (1z
Or it may be larger than the width of az.

Figure 1 is a specific slope diagram showing a state in which the end of the formwork (1) is placed on a concrete beam (N) in order to explain the present invention in detail.

In the patent application S'l-/670g No. 1 invention invented by the present inventor in n., when the end of the formwork is placed on a concrete beam, when constructing a concrete floor, the end Where it touches the concrete beam, there is a "cross-sectional defect" along its entire length.
However, in the present invention, the ψ central part σ51 (also ad,
Due to the presence of the cutout window σ511151), the concrete floor construction may be interrupted, and the concrete in the upper and lower parts of the formwork (1) will be continuous with the concrete at the cutout (or the cutout window). A floor is formed.

In the present invention, as described above, a required number of reinforcing ribs f51+51... each having a triangular cross section and consisting of both side walls +31131 expanding downward and the bottom surface t4+ are arranged in parallel on the lower surface side of the horizontal plate (2). In the formwork, which is tightened and bent, and the tops of the side walls +31 and +31 are brought into contact with each other at the apex of the triangular reinforcing rib (5) to form a closed apex portion a3, The end of the bottom of the reinforcing rib (5) is crushed using a press machine, and its tip (8) is superimposed on the back surface of the horizontal plate (2) to form a hooking part (7). A notch q5 having the width and required length of the hooking portion is bored, and the formwork +1 is formed.
The bottom surface (4) of the reinforcing rib (5) is crushed in the middle part of 1 using a press machine and overlapped with the back surface of the horizontal plate (2) to form a concave portion α.
2, and reinforcing ribs (5
) and (5), a cutout window α with the required width σ and the required length L5 is bored in the intermediate flat part α4, or both ends of the formwork (1') are cut horizontally. The surface of the plate (2) and the reinforcing rib (5
) from both the bottom and both sides with a press machine and place it in the middle of both sides! forming a width hooking part (7);
In the vicinity of the hooking part (7), crush the end of the reinforcing rib [51] and drill a notch 151 of the required width and length in the intermediate flat part (141) between the reinforcing rib [51] and the nine parts. Along with the formwork 111
The surface of the horizontal plate (2) and the bottom surface (4: Form a concave part a42 for the purpose of this, and in the vicinity of the concave part az, add one concave of PJT and the required length in the intermediate flat part (■) between the reinforcing ribs (5) and (5). A cut-out window (15127) is installed for concrete floor construction, and the formwork (111 + I+ hanging part) is installed so that the concrete in the upper and lower parts of Extrusion 1 is continuous to form a concrete floor. (71 (Concrete suspended horizontally on a beam)) K is made into gills that are poured, so it is useful for building stables with less jelly and the strength of reinforced concrete. 1
When attaching the end of the formwork (11) to the temporary frame 12D (wooden formwork) as shown in the figure, conventional methods require drilling holes in the end of the formwork and then nailing them. Although it requires troublesome work, with the method of the present invention, the formwork m can be attached to the temporary frame by simply driving a nail into the corner of the notch Q2τ and bending it as shown in the first figure. It has the great effect of being extremely advantageous in field work.

[Brief explanation of the drawing]

Drawing a: An embodiment of the formwork for constructing a concrete floor according to the present invention; Fig. 1 is a perspective view of the formwork of the first embodiment; Figure 3 is a perspective view of the formwork of the second embodiment with part N cut away; Figure 3 is a side view of the same as above; Figure Ms is an end view of the formwork; The figure shows a side view of the metal stone bridge built on a concrete beam using the formwork of the first embodiment, Fig. 7 is a partially cutaway plan view of the same as above, and Fig. 7 shows the formwork of the first and second embodiments. Figure 9 is a side view of the formwork of the second embodiment constructed as a bridge over a concrete beam, and Figure 1O shows the same as above. Partial cutaway plan view, Figure 1I, 1st
FIG. 2 is a perspective view for detailed explanation of the present invention. ill ill is the formwork +21 +21 is the horizontal plate +31 +31 is the side +41 +41 is the bottom +51 +51 is the reinforcing rib +61161 is the connecting piece (7) In is the hook part (81 is the tip (8) is the slope view (9) ) is the notch σI is the slope old] is the slope LIzLI, 14 concave part (131α31 is the closed apex part j) / Jll [141+1411141141 +-! intermediate flat part (
151u51 Notch/lN 11s 1151 ri Notch window (171 concrete Ua thin outside (ICJ thick lA outside) 21 stirrup (211 wooden formwork procedure amendment (7yg 10/20/1988) Day

Claims (2)

[Claims] (1) Bend the required number of reinforcing ribs with a triangular cross section consisting of both side walls and the bottom surface expanding downward on the lower surface side of the horizontal plate so that they are parallel to each other, and at the apex of the triangular reinforcing ribs. In the formwork in which the tops of both side walls come into contact with each other to form a closed apex, the bottom end of the reinforcing rib is crushed with a press machine, and the topmost part is pressed into a horizontal plate. to form a hooking part by overlapping with the back surface of the reinforcing rib, and in the vicinity of the hooking part, the required width and the intermediate flat part between the end of the bottom surface of the reinforcing rib and the foremost part of the reinforcing rib are crushed. At the same time as drilling a notch of the required length, the bottom surface of the reinforcing rib is crushed using a press machine in the middle part of the formwork, so that it overlaps with the back surface of the horizontal plate to form a recessed part,
A formwork for constructing a concrete floor, characterized in that a cutout window of a required width and length is bored in the intermediate flat part between the reinforcing rib and the adjacent reinforcing rib in the vicinity of the recessed part. (2) Bend the required number of reinforcing ribs with a triangular cross section consisting of both side walls and the bottom surface expanding downward on the lower surface side of the horizontal plate so that they are parallel to each other, and at the apex of the triangular reinforcing ribs. In a formwork in which the tops of the side walls contact each other to form a closed base apex, both ends of the formwork are pressed from both the surface of the horizontal plate and the bottom of the reinforcing rib. Crush it with a machine to form a hooking part of the required width in the middle part of both sides,
A notch of the required width and length is bored in the intermediate flat part between the part where the end of the reinforcing rib is crushed in the vicinity of the hook part, and the middle part of the formwork is cut out. Then, both the surface of the horizontal plate and the bottom surface of the reinforcing rib are crushed using a press machine to form a concave part in the middle of both sides, and in the vicinity of the concave part, the area between the reinforcing rib and the adjacent reinforcing rib is crushed. A formwork for constructing a concrete floor, characterized by having a notch of a required width and length bored in the middle flat part of the concrete floor.