JP6804013B1 - Formwork panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a formwork panel capable of suppressing leakage of concrete paste or mortar paste. SOLUTION: A plurality of semicircular lid-shaped slits 14 are formed at predetermined intervals along a length direction on an upper surface 11a of a ridge 11 of a formwork panel 100. The arc of the lid-shaped slit 14 is formed so as to face upward or sideways when the formwork panel 100 is erected. [Selection diagram] Fig. 1

Description

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

In recent years, metal formwork panels have come to be used as formwork weir plates for forming concrete foundations and wall surfaces of buildings.

At the actual construction site, the formwork panels are placed facing each other, and the separator (formwork spacing metal fittings) and foam ties (formwork binding metal fittings) are erected to keep the panel spacing constant, so that the concrete foundation and wall surface Formwork is constructed to form the concrete, and concrete is placed in the formwork. After that, even after the concrete has hardened, the formwork panel can be left embedded without being removed and used as it is as a building material.

By forming the concrete formwork using the formwork panel in this way, the construction period can be shortened by eliminating the process and labor of removing the formwork, and the strength of the foundation and wall surface of the building can be effectively reinforced. It has become like.

For example, as such an embedded formwork panel, the formwork panel disclosed in Patent Document 1 is known. In the formwork panel of Patent Document 1, rib portions extending in the longitudinal direction are provided parallel to the back or surface side of the panel at predetermined intervals in the width direction, and are parallel to the rib portions substantially in the center between the rib portions. Moreover, a large number of slits extending in the longitudinal direction are provided in a straight line at predetermined intervals.

The rib portion is provided with a large number of C-shaped slits in the vertical direction at predetermined intervals except for one end in the width direction. When the substantially circular lid piece of the C-shaped slit is pushed or bent from the front surface side to the back surface side of the panel, the connection remaining portion is cut and used as a mounting hole for the separator.

Further, in Patent Document 2, a metal plate is bent to form ribs at predetermined intervals, and C-shaped slits are provided on the bottom surface of the ribs at predetermined intervals to form an elevation of concrete for civil engineering and construction. A metal formwork panel used as a formwork weir plate is disclosed.

The width dimension of this C-shaped slit is a width dimension through which a separator round washer that contacts the inner side surface of the panel and fixes the separator when the separator is tightened can be inserted, and the rib is a gap between the ribs when fixing the separator. It has a groove shape into which a double-shaped spacer that fills the space can be fitted.

Patent 3715561 Patent 5438394

However, the C-shaped slit provided in the rib portion disclosed in the above-mentioned patent document is used when a minute connecting portion is left at a predetermined position in the contour of the circular hole and the hole is opened for inserting the separator. , Most of the other parts are bent and punched out, or a tool such as a screwdriver is pierced to tear off the connecting part, and although it is relatively easy to remove, it is accidentally punched out or torn off. In such a case, the holes are opened, and there is a problem that a large amount of glue (concrete paste or mortar paste) leaks from the holes to the outside of the panel.

The slag leaked in this way became very unattractive when it adhered to the formwork panel and hardened. On-site workers apply a dissolving and removing agent to the hardened and fixed slag so as not to spoil the appearance at the time of delivery, and then rub it with a high pressure washer, metal brush, or scraper to remove it. It was necessary and troublesome, and the cost for that was required.

Further, the formwork panel disclosed in the above-mentioned patent document is erected on a runner fixed on waste concrete with a concrete nail, but depending on the shape of the waste concrete, the formwork panel erected is erected. Since the height of the concrete varies, there is a problem that the field worker is forced to cut the concrete with a saw and adjust the panel height.

Furthermore, in the concrete placing work using the formwork panel, it was confirmed to what height the concrete was filled based on the leakage condition of the slag, but it was easily confirmed from the outside of the formwork panel. There was a problem that it was difficult.

Purpose of the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a formwork panel capable of minimizing leakage of slag.

Another object of the present invention is to provide a formwork panel capable of improving work efficiency by facilitating height adjustment of the panel.

Furthermore, an object of the present invention is to provide a formwork panel in which a field worker can easily check the filling status of concrete from the outside of the formwork panel.

Means to solve problems

In order to achieve such an object, in the mold panel of the present invention, 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 are provided between the ridges. It is a mold panel used as a dam plate of a concrete mold that is juxtaposed in the width direction of the panel so as to be parallel to the above, and on the bottom surface of the ridge, the arc is half directed upward when the panel is erected. A plurality of arc-shaped slits are formed along the longitudinal direction of the panel at predetermined intervals, and the convex portions are linear slits penetrating the front and back of the panel at predetermined intervals so as to be perpendicular to the longitudinal direction of the panel. Is formed, and a broken line-shaped slit is formed in a portion other than the convex stripe, and the straight line-shaped slit and the broken-line-shaped slit are continuously formed .

Effect of the invention

According to the present invention, a semicircle is formed on the bottom surface of the ridge of the formwork panel in an upward direction (curve portion of the alphabet D is on the top) or sideways when the panel is erected (curve portion of the alphabet D is on the left or right side). By forming an arc-shaped (D-shaped) slit, the straight portion (connecting portion) of D becomes the lower side or the left and right sides, and the contact area with the concrete paste is smaller than that of the conventional C-shaped slit, and Since there are no cuts on the underside or left and right sides of the semi-arc-shaped slit, it is difficult to remove easily, and since it is not accidentally punched or torn, it does not remain open, and therefore the hole. It is possible to dramatically prevent a large amount of slag from leaking to the outside of the panel.

Further, according to the present invention, since slits are formed at predetermined intervals so as to be perpendicular to the longitudinal direction of the formwork panel, the height of the formwork panel needs to be adjusted according to the situation at the installation site. Since it can be easily cut by simply bending it along the slit on the spot without cutting with a gold saw as in the conventional case, it is possible to greatly improve the work efficiency.

It is a perspective view which shows the appearance of the formwork panel which concerns on 1st Embodiment of this invention. It is a partial plan view enlarged view of the formwork panel which concerns on 1st Embodiment of this invention. It is a perspective view which shows the appearance of the modification of the formwork panel which concerns on 1st Embodiment of this invention. It is a perspective view which shows the appearance of the formwork panel which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the appearance of the formwork panel which concerns on 2nd Embodiment of this invention. It is a figure which shows the construction example of the formwork panel which concerns on 3rd Embodiment of this invention. It is a figure which shows the construction example of the formwork panel which concerns on 3rd Embodiment of this invention.

<First Embodiment>
FIG. 1 is a perspective view showing the appearance of the formwork panel according to the first embodiment of the present invention, and FIG. 2 is a partially enlarged plan view thereof.
Hereinafter, the configuration of the formwork panel according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

As shown in FIGS. 1 and 2, for example, the formwork panel 100 is formed by processing a galvanized steel plate that is resistant to rust, and is formed by bending and cutting into a substantially square front shape and a substantially square wave cross section. It is a buried formwork panel.
For example, the size of the finished product of the formwork panel 100 is about 300 to 7000 mm in length, 600 mm to 650 mm in width, and 0.2 to 1.0 mm in thickness.

In this way, by bending the formwork panel 100 into a substantially angular wave shape in cross section, a plurality of ridges 11 parallel to each other are arranged side by side at predetermined intervals to reinforce the strength of the panel 100 itself. Further, by forming the panel cross section into an equilateral angular wave shape, excellent strength is exhibited particularly against a force from the front surface or the back surface side.

In the first embodiment of the present invention, the forming direction of the ridges 11 is the "length direction" of the formwork panel 100, and the direction perpendicular to the length direction of the formwork panel 100 is the "width". The direction will be described below.

As shown in FIGS. 1 and 2, the ridge 11 is composed of an upper surface 11a and two side surfaces 11b connected 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 about 10 to 20 mm, respectively. Further, the distance between the ridges 11 adjacent to each other in the width direction is about 10 to 50 mm.

Further, on the concave surface between the protrusions 11, a plurality of ribs 12 having a convex cross section in the width direction and a groove portion 13 having a concave cross section in the width direction are repeated at predetermined intervals so as to be parallel to the protrusions 11. It is formed.

In the first embodiment of the present invention, the ridge 11 → groove 13 → rib 12 → groove 13 → rib 12 → ... → groove 13 → ridge 11 → ... is provided in the width direction. 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 in a semicircular shape, for example. Further, the groove portion 13 is formed to have a width of about 2 to 10 mm.

A notch 20 having a predetermined length is provided between the rib 12 and the rib 12 in a broken line shape in parallel with the rib 12 at a predetermined interval.

The notch 20 is a notch that penetrates the front and back of the formwork panel 100 so that liquid concrete or mortar does not leak from the notch 20 after the concrete or mortar is placed, and an extra amount contained in the concrete or mortar. The width is about 0.3 to 1 mm, the length is about 20 mm, and the distance between the notches 20 in the length direction is about 5 mm in a broken line shape so that water can be discharged.

By repeatedly bending the formwork panel 100 in the forward and reverse directions several times along the row of the broken line-shaped notches 20, the formwork panel 100 can be easily cut to a desired size. Further, if the formwork panel 100 is bent at a predetermined angle along the row of the broken line-shaped cuts 20, the corner portion of the formwork can be formed.

On the other hand, a plurality of semicircular lid-shaped slits 14 are formed on the upper surface 11a of the ridge 11 at predetermined intervals along the length direction. The arc of the lid-shaped slit 14 is formed so as to face upward when the form panel 100 is erected.

The lid-shaped slit 14 is a notch having a smile width penetrating the front and back of the form panel 100, and functions as a separator insertion hole by pushing and bending from the panel front surface side to the back surface side to open a desired lid-shaped slit. To do. At the time of construction, the formwork is constructed by standing the formwork panels 100 facing each other, but by inserting the separator into the separator insertion hole and fixing it with a foam tie, the formwork panels 100 arranged facing each other are arranged. Can be connected.

The lid-shaped slit 14 is a notch having a minute width of about 0.3 to 1 mm, and is formed so that a large amount of liquid concrete or mortar, that is, "slag" does not leak after placing concrete or mortar. The width is such that excess water contained in concrete and mortar can be discharged appropriately.

In the first embodiment, the arc of the lid-shaped slit 14 is formed so as to face upward (the curved portion of the alphabet D is upward) when the formwork panel 100 is erected, so that the horizontal portion is on the lower side, and the conventional C Compared to formwork slits, the contact area with concrete paste and mortar paste is reduced, and since there is no notch in the downward direction of the slit, it is difficult to remove easily and it is not accidentally punched or torn. It does not remain open, and therefore it is possible to dramatically prevent a large amount of glue from leaking out of the panel from the hole. Further, since the horizontal portion of the lid-shaped slit 14 is on the lower side, the separator can be smoothly inserted, so that the work efficiency at the construction site can be significantly improved.

FIG. 3 is a perspective view showing the appearance of a modified example of the formwork panel according to the first embodiment. The same components as those in FIGS. 1 and 2 are designated by the same reference numerals and the description thereof will be omitted. However, in this formwork panel, a semicircle is placed sideways (the curved portion of the alphabet D is on the right side) when the panel is erected. An arc-shaped (D-shaped) slit is formed. By forming in this way, the straight part (connecting part) of D is on the left side, the contact area with the concrete paste is smaller than that of the conventional C-shaped slit, and the notch is on the left side of the semi-arc-shaped slit. Since there is no such thing, it is difficult to remove easily, and since it is not accidentally punched or torn off, it does not remain open, and therefore a large amount of slag leaks out of the panel from the hole. It is possible to suppress to. Further, since the horizontal portion of the lid-shaped slit 14 is on the left side, the separator can be smoothly inserted, so that the work efficiency at the construction site can be significantly improved. In the figure, the straight line portion (connecting portion) of D shows an example on the left side, but the present invention is not limited to the left side, and the straight line portion (connecting portion) of D may be on the right side.

<Second embodiment>
4 and 5 are perspective views showing the appearance of the formwork panel according to the second embodiment of the present invention. FIG. 4 corresponds to the formwork panel of FIG. 1, and FIG. 5 corresponds to the formwork panel of FIG.
Hereinafter, the configuration of the formwork panel according to the second embodiment of the present invention will be described with reference to FIGS. 4 and 5, but the same components as those of the first embodiment are designated by the same reference numerals. The explanation is omitted.

In the formwork panel 100 according to the second embodiment of the present invention, linear slits 15a are formed on the upper surface 11a and the two side surfaces 11b of the ridge 11 having a substantially angular wave shape in cross section, and ribs other than the ridge 11 are formed. A broken line-shaped slit 15b is formed in the 12 and the groove 13.

The slits 15a and 15b are notches having a small width of about 0.3 to 1 mm formed in a direction perpendicular to the longitudinal direction of the panel, and can be easily cut by a worker at the site by bending by hand. It is possible to adjust its height.

Further, the forming positions of the slits 15a and 15b may be any position as long as they do not overlap with the lid-shaped slit 14, and can be appropriately changed according to the design specifications.

<Third embodiment>
6 and 7 are views showing a construction example of a formwork panel according to a third embodiment of the present invention, FIG. 6 is a front view thereof, and FIG. 7 is a side view thereof.
As shown in FIGS. 6 and 7, the formwork panel 100 according to the third embodiment of the present invention is provided with openings at arbitrary positions, and U-shaped runners 103 are fitted to all edges of the openings. ..

The U-shaped runner 103 is used to eliminate steps due to ridges and ribs on the formwork panel 100 when fixing the transparent resin panel 16 described later from the concrete casting surface side.

The window portion 17 is formed by fixing the transparent resin panel 16 so as to cover the opening in which the U-shaped runner 103 is fitted from the concrete casting surface side of the formwork panel 100.

The transparent resin panel 16 is preferably made of a polycarbonate resin having excellent impact strength, and its thickness is preferably about 10 mm. At the time of construction, the formwork panel 100 is erected on the runner 103 so that the end portions in the width direction overlap each other with other adjacent formwork panels. At this time, the positions of the separator insertion holes described above are also arranged so as to overlap each other.

By inserting the separator 104 into the overlapping separator insertion holes and fixing the foam ties 101 with nuts or the like, the formwork panels adjacent to each other are fixed to each other, and the distance between the formwork panels 100 facing each other is fixed. To fix.

Further, at the time of formwork construction, a pipe 102 or the like is passed in the width direction to the front side (outer surface side of the formwork) of the formwork panel 100 to reinforce the strength of the entire formwork.

The pipe 102 is held by the foam tie 101 and fixed on the outer surface of the formwork panel 100.

Although FIGS. 6 and 7 show how the two window portions 17 are formed, it is also possible to form the two window portions 17 as one large window portion, and the design is appropriately changed according to the application and specifications. It is possible.

Further, the mold panel 100 may be provided with a lid-shaped slit 14, a linear slit 15a, or a broken line-shaped slit 15b as described in the first embodiment and the second embodiment. Needless to say.

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

11 Convex 11a Convex top surface 11b Convex side surface 12 Rib 13 Groove 14 Lid-shaped slit 15a Straight slit 15b Dash-shaped slit 16 Transparent resin panel 17 Window 18 U-shaped runner 20 Cut 100 Formwork panel 101 Form tie 102 Pipe 103 Runner 104 Separator

Claims (1)

Concrete in which a plurality of ridges extending in the longitudinal direction of the panel are arranged in parallel in the panel width direction at predetermined intervals, and a plurality of ribs are arranged in parallel in the panel width direction so as to be parallel to the ridges between the ridges. A formwork panel used as a weir plate for a formwork.
A plurality of semicircular slits are formed on the bottom surface of the ridge at predetermined intervals along the longitudinal direction of the panel so that the arc faces upward when the panel is erected .
Straight slits penetrating the front and back of the panel at predetermined intervals are formed in the convex portion so as to be perpendicular to the longitudinal direction of the panel, and broken line slits are formed in the portion other than the convex portion. ,
The linear slit and the broken line slit are continuously formed.
Formwork panel featuring that.

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