JP7149475B1 - formwork panel - Google Patents

Abstract

[PROBLEMS] To provide a formwork panel capable of easily adjusting the length in the width direction while having a degree of freedom in design, and suppressing leakage of slag (concrete paste or mortar paste). SOLUTION: A plurality of mutually parallel ridges 11 are arranged side by side at predetermined intervals on a formwork panel 100 by bending a panel steel plate into a substantially rectangular wave shape in cross section. A plurality of ribs 12 having a convex cross section in the width direction and grooves 13 having a concave cross section in the width direction are repeatedly formed on the concave surface between the ridges 11 so as to be parallel to the ridges 11 at predetermined intervals. ing. The bending guide groove 15 is formed at a bendable position near the central portion of the groove 13 formed between the ribs 12 along the longitudinal direction of the panel. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to a formwork panel, and more particularly to a formwork panel used as a barrier plate for forming a concrete foundation, a wall surface, or the like of a building.

BACKGROUND ART In recent years, metal formwork panels have come to be used as barrier plates for formwork for forming concrete foundations and walls of buildings.

At actual construction sites, such formwork panels are placed facing each other and erected so that the panel spacing is kept constant with separators (formwork spacing maintenance fittings) and form ties (formwork binding fittings). Construct a form for forming a concrete foundation and walls, and pour concrete into this form. After that, even after the concrete has hardened, the form panels can be left embedded without being removed and used as building materials.

By forming a concrete formwork using such formwork panels, the process of removing the formwork can be omitted, so the construction period can be greatly shortened, and the strength of the foundation and walls of the building can be effectively improved. can be reinforced to

However, since the formwork panel is usually plate-like, there is a problem that it is difficult to use it for the corner portion of the concrete foundation.
When constructing concrete foundations for buildings, it is necessary to form the corners. If you try to form the corners with plate-shaped formwork panels, gaps will inevitably occur in the corners and the strength will be insufficient. Therefore, it was necessary to separately prepare a formwork member exclusively for the corner portion.

For example, a formwork panel disclosed in Patent Document 1 is known as such an embedded formwork panel. This formwork panel is a buried type formed by bending a plate-shaped steel material into a substantially square front shape and a substantially square wave cross section, and cutting and forming the same. By bending the panel steel plate into a substantially square wave shape in cross section, a plurality of mutually parallel ridges are arranged side by side at predetermined intervals on the formwork panel, and a plurality of widthwise ridges are provided at predetermined intervals between the ridges. A rib having a convex cross section is repeatedly formed in parallel with the ridge. Furthermore, at both ends of the ridge in the panel width direction, notches of a predetermined length are provided in the form of broken lines so as to be parallel to the ridge at predetermined intervals.

According to Patent Document 1, incisions of a certain length penetrating the front and back of the panel are formed at regular intervals substantially parallel to the ridges, so that the formwork panel can be bent at a desired position at any angle. In addition, since it can be cut by repeatedly bending forward and backward, it is not necessary for field workers to cut and adjust with a hacksaw, and it can be used for the corners of forms of various sizes.

Patent 3934668

However, the row of cuts of a predetermined length formed at both ends of the ridge in the panel width direction (on the boundary line between the rib and the groove) disclosed in the above-mentioned Patent Document 1 literally penetrates the front and back of the formwork panel. It can be used by bending it at a predetermined angle, or by bending it multiple times and cutting it, but when concrete is poured, a large amount of slag (excess waste contained in concrete paste or mortar paste) is removed from the cut part. There was a problem that moisture) leaked out of the panel.

The slag that leaked out in this way adhered to the formwork panels and, when hardened, had a very unsightly appearance. On-site workers apply a dissolution remover, etc. to the slag that has hardened and adhered so as not to impair the appearance at the time of delivery. It is necessary to provide a cleaning process by cleaning, which is troublesome and has the problem of increasing the construction period and cost.
In addition, although it is possible to cut by bending the cut that penetrates the front and back of the formwork panel, in reality, there is a problem that the cut cannot be cut unless the cut portion is bent a considerable number of times.

The present invention has been made in view of the above problems, and it is possible to easily adjust the panel width at the work site while maintaining the degree of freedom in designing the corner portion, and to use concrete paste, mortar paste, etc. To provide a formwork panel capable of suppressing a large amount of slag from leaking to the outside of the panel.

In order to achieve such an object, the formwork panel of the present invention has a plurality of ridges extending in the longitudinal direction of the panel arranged in parallel at predetermined intervals in the width direction of the panel, and a plurality of ribs between the ridges. are arranged side by side in the panel width direction so as to be substantially parallel to each other, a first groove is formed between the plurality of ribs, and both ends of each of the protrusions in the panel width direction are respectively connected to the ribs via the second grooves A formwork panel used as a barrier plate for a concrete formwork, wherein the bottom surface of the ridge has a lid-like slit extending in the longitudinal direction of the panel, which becomes an insertion hole for a formwork gap holding metal fitting when the lid is opened. A plurality of guide grooves are arranged at predetermined intervals along the length of the panel, and tapered guide grooves for bending the panel from one end to the other end of the panel are formed on both sides of the first groove portion and/or the second groove portion of the panel. It is characterized by being continuously installed along the direction .

Further, the guide groove according to the present invention is characterized in that it can be cut by repeated bending.

Further, the lid-shaped slit according to the present invention is characterized in that a plurality of lid-shaped slits are formed at intervals of 25 mm along the longitudinal direction of the panel.

According to the present invention, the guide groove for bending along the longitudinal direction of the panel is formed in the first groove portion between the ribs, and the slit penetrating the front and back of the formwork panel serves as the insertion hole for the separator. By using only a lid-shaped slit, the amount of slag leakage can be greatly reduced.

Further, according to the present invention, by forming the guide grooves for bending along the longitudinal direction of the panel in the first groove and the second groove, the length of the formwork panel in the width direction can be changed according to the conditions of the installation site. When it is necessary to adjust the width of the panel, it is not necessary to cut it with a hacksaw as in the past, but it can be cut simply by bending it several times with the guide groove, making it easier to adjust the panel width and greatly improving work efficiency. It is possible to

Further, according to the present invention, by forming guide grooves on the front and back of the panel, it is possible to easily perform bending and cutting.

In addition, according to the present invention, by setting the interval in the longitudinal direction of the panel of the lid-shaped slits, which serve as the insertion holes for the separator, to 25 mm, it is possible for the customer to order a fine size in the longitudinal direction of the formwork panel (in units of 25 mm). One size fits all.

Furthermore, according to the present invention, by forming a plurality of slits penetrating the front and back of the panel at predetermined intervals in the bottom portion of the guide groove, it is possible to easily perform cutting by bending.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the external appearance of the form panel which concerns on the 1st Embodiment of this invention. 1 is a cross-sectional view of a formwork panel according to a first embodiment of the invention; FIG. 1 is an enlarged front view of a formwork panel according to a first embodiment of the present invention; FIG. It is a partial cross-sectional enlarged view of the formwork panel which concerns on the 1st Embodiment of this invention. FIG. 5 is a perspective view showing the appearance of a formwork panel according to a second embodiment of the present invention; FIG. 4 is a cross-sectional view of a formwork panel according to a second embodiment of the present invention; FIG. 8 is an enlarged front view of a formwork panel according to a third embodiment of the present invention;

<First embodiment>
FIG. 1 is a perspective view showing the appearance of a formwork panel according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the formwork panel according to the first embodiment of the present invention, showing the AA cross section of FIG. FIG. 3 is an enlarged front view according to the first embodiment of the present invention, and FIG. 4 is an enlarged cross-sectional view showing how a bending guide groove according to the present invention is formed.
The configuration of the formwork panel 100 according to the first embodiment of the present invention will be described in detail below with reference to these figures.

The formwork panel 100 is formed by processing a highly corrosion-resistant hot-dip plated steel sheet, for example, and is a fill-in type formwork panel that is formed by bending into a substantially rectangular front shape and a substantially square wave-shaped cross section, cutting, and molding.
For example, the finished form panel 100 has a length of 300 to 7000 mm, a width of 650 mm, and a thickness of 0.4 to 1.0 mm.

By bending the formwork panel 100 into a substantially rectangular wave shape in this way, a plurality of parallel ridges 11 are arranged side by side at predetermined intervals to reinforce the strength of the panel 100 itself. In addition, by shaping the panel cross-section into an equilateral square wave shape, it exhibits excellent strength against forces from the front side or the back side in particular.
In the first embodiment of the present invention, the direction in which the ridges 11 are formed is defined as the "longitudinal direction" of the formwork panel 100, and the direction perpendicular to the lengthwise direction of the formwork panel 100 is defined as the "width direction." direction”.

As shown in FIG. 1, the ridge 11 is composed of an upper surface 11a and two side surfaces 11b which are continuous in both width directions of the upper surface 11a.
The length of the upper surface 11a in the width direction and the length of the side surface 11b in the width direction (depth direction) are each about 10 to 20 mm. Further, the interval in the width direction between the adjacent ridges 11 is approximately 10 to 50 mm.

In addition, on the concave surface between the ridges 11, a plurality of ribs 12 having a convex cross section in the width direction and grooves 13 having a concave cross section in the width direction are repeatedly formed in parallel with the ridges 11 at predetermined intervals. formed.

In the first embodiment of the present invention, the protrusion 11 → groove 13 (second groove) → rib 12 → groove 13 (first groove) → rib 12 → ... → groove 13 (second groove) in the width direction , and grooves 13 are continuously provided on both sides of the ridge 11 in the width direction. The rib 12 has a width of about 8 to 20 mm and a height of about 3 to 10 mm, and its cross section in the width direction is formed, for example, in a semicircular shape. Further, the groove portion 13 is formed with a width of about 2 to 10 mm.

A plurality of lid-like slits 14 are formed in the upper surface 11a of the ridge 11 at predetermined intervals along the length direction. The shape and orientation of the lid-shaped slit 14 are not particularly limited.

The lid-shaped slit 14 is a cut of a minute width that penetrates the front and back of the mold panel 100. By opening a desired lid-shaped slit as shown in FIG. Functions as an insertion hole. At the time of construction, the formwork is constructed by erecting the formwork panels 100 facing each other. can be concatenated.

The lid-like slit 14 is known to have a C-shaped, U-shaped, or D-shaped shape in plan view. It is possible to appropriately change the design of the installation direction, such as whether the slits are formed so that the slits are oriented horizontally.

Further, the lid-like slit 14 is a slit having a very small width of about 0.3 to 1 mm, and is used to prevent a large amount of liquid concrete paste or mortar paste, that is, slag, from leaking out after concrete or mortar is placed. It has a wide width and can moderately discharge excess water contained in concrete and mortar.

Furthermore, the arrangement interval of the lid-shaped slits 14 arranged at regular intervals in the longitudinal direction of the panel is preferably 25 mm. The reason for this is that many of the customer's detailed size orders in the longitudinal direction of the form panel are in units of 25 mm. By preforming with , it is possible to correspond to all orders with one size.

As shown in FIG. 2, the bending guide groove 15 is formed at a bendable position near the central portion of the groove 13 (first groove) formed between the ribs 12 along the longitudinal direction of the panel. For example, in the case of a formwork panel having a thickness of 0.4 mm, the bending guide groove 15 is formed by pressing as a tapered groove having a depth of about 0.1 to 0.2 mm with respect to the panel surface.

As shown in FIG. 3, the upper surface 11a of the ridge 11 has a C-shaped incision 21 penetrating the front and back while leaving a part of the circle, and a folded part that is a part of the circle left without the incision 21. 22 are provided to form the aforementioned lid-like slit 14 . By folding back the lid-shaped slit 14 along the folding portion 22, the lid is opened, and the separator insertion hole 23 is formed.

FIG. 4(a) shows a state in which the bending guide groove 15 according to the present invention is formed only on the panel surface by press working. The bending guide grooves 15 can be formed not only on the front surface of the panel but also on the rear surface of the panel at the opposite position by press working, as shown in FIG. 4(b). In this case, in the case of a formwork panel with a thickness of 0.4 mm, a tapered groove with a depth of about 0.1 mm is formed on the front surface of the panel, and a tapered groove with a depth of about 0.1 mm is also formed on the back surface of the panel. make sure to

The formwork panel 100 can be freely bent at a predetermined angle along the bending guide groove 15 . For example, by bending it at a substantially right angle, it can be used for concrete foundations of buildings and corner portions of walls. As a result, it is possible to form the formwork for both the plane portion and the corner portion with only the formwork panel 100 without preparing a special formwork member for the corner portion.

<Second embodiment>
FIG. 5 is a perspective view showing the appearance of a formwork panel according to a second embodiment of the present invention. FIG. 6 is a cross-sectional view of a formwork panel according to a second embodiment of the present invention, showing a cross section taken along line AA of FIG.
The configuration of a formwork panel 200 according to a second embodiment of the present invention will be described below with reference to FIGS. We omit the explanation.

The formwork panel 200 according to the second embodiment of the present invention includes grooves 13 (second grooves) formed between the ridges 11 and the ribs 12, and formed between the ribs 12 and 12. A bending guide groove 15 is formed in all of the grooves 13 (first grooves) and the grooves 13 (second grooves) formed between the ribs 12 and the ridges 11 .

The bending guide grooves 15 according to the second embodiment of the present invention are provided at three locations between each ridge, and are installed at intervals of about 10 to 20 mm which can be easily finely adjusted. It is possible for a worker to easily cut on site without using an electric cutter or a hacksaw for delicate size adjustment in the width direction.

<Third Embodiment>
FIG. 7 is an enlarged front view of a formwork panel according to a third embodiment of the present invention.
Hereinafter, the configuration of the formwork panel 300 according to the third embodiment of the present invention will be described using FIG. We omit the explanation.

The formwork panel 300 according to the third embodiment of the present invention has a minute width penetrating the front and back of the panel at the bottom portion of the bending guide groove 15 provided in the groove portion 13 formed between the ribs 12 . is to form the notch 16 of .

As described above, the cut 16 penetrates the front and back of the panel. is formed.
For example, the cuts 16 have a width of about 0.3 to 1 mm and a length of about 10 to 50 mm, and are preferably formed in a dashed line with an interval of about 10 to 30 mm in the longitudinal direction.

The cut 16 according to the third embodiment of the present invention is formed only in the bottom portion of the bending guide groove 15 provided in the groove 13 formed between the ribs 12, but for example, As shown in the second embodiment of the present invention, it is formed at the bottom portion of the bending guide groove 15 provided in the groove portion 13 (second groove portion) formed between the ridge 11 and the rib 12. may be formed in all the bending guide grooves, or may be formed in any arbitrary bending guide groove.

It should be noted that each of the above-described embodiments shows a preferred example of the present invention, and the example of the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. It is possible to implement.

11 ridge 11a ridge upper surface 11b ridge side surface 12 rib 13 groove (first groove, second groove)
14 Lid-shaped slit 15 Folding guide groove 16 Notch 21 C-shaped notch 22 Folded portion 23 Separator insertion hole

Claims (3)

A plurality of ridges extending in the longitudinal direction of the panel are arranged in parallel at predetermined intervals in the panel width direction, and a plurality of ribs between the ridges are arranged in parallel in the panel width direction so as to be substantially parallel to the ridges, A mold used as a barrier plate for concrete formwork, in which first grooves are formed between the plurality of ribs, and both ends of each of the ridges in the panel width direction are connected to the ribs via second grooves. A frame panel,
A plurality of lid-shaped slits, which become insertion holes for metal fittings for maintaining space between formwork when the lid is opened, are arranged on the bottom surface of the ridge along the longitudinal direction of the panel at predetermined intervals,
Both sides of the first groove portion and/or the second groove portion of the panel are provided with tapered guide grooves along the longitudinal direction of the panel for bending the panel from one end to the other end of the panel . A formwork panel characterized by: The formwork panel according to claim 1, wherein the guide groove is cuttable by repeated bending. 3. The formwork panel according to claim 1, wherein a plurality of said lid-like slits are formed at intervals of 25 mm along the longitudinal direction of the panel.

Images