JP7289501B2 - Concrete pouring formwork panel structure with viewing window - Google Patents

Description

TECHNICAL FIELD The present invention relates to a concrete placing formwork panel structure having a visual window provided in the face plate portion of the panel, through which the state of filling of the concrete to be poured, defects of the concrete, etc. can be checked.

2. Description of the Related Art Conventionally, in civil engineering and construction work, various materials such as wood, resin, and steel have been used as formwork panels for constructing concrete buildings.
However, in the space surrounded by this formwork panel, when a problem occurs in the progress of concrete placement or in the concrete itself (state as a liquid composition), the phenomenon can be quickly and accurately grasped. However, since the form panel itself is not transparent, it is extremely difficult to see the situation in the placement space. For this reason, there are various types of concrete placement failures known as junka, such as the phenomenon of aggregates gathering on the surface of the concrete, which is called "bean board", the phenomenon of "hollow", where the inside of concrete is not filled, or the appearance of hollows on the surface of concrete. Phenomena such as "cavities" that were formed were also confirmed only after the formwork panels were removed and cured.

However, for example, in the external insulation construction method proposed in Patent Document 1, since a transparent flat plate resin is used as the fence plate of the temporary frame, the condition of the concrete filled inside the temporary frame and the occurrence of defects can be controlled by the fence. It can be visually confirmed (=perspective) through the plate.

JP 2017-75514 A

However, since the dam of the temporary frame described in Patent Document 1 is manufactured using a transparent resin plate of acrylic, vinyl chloride, PET, or polycarbonate, the concrete aggregate or the like is used on the surface of the " It is easy to get scratched, and the surface needs to be cleaned or polished after use. And although "scratches" on the surface are reduced by polishing, etc., the surface becomes cloudy and "transparency" is inevitably impaired, so in order to obtain "transparency", the panel itself must be replaced. A need arose, resulting in an extremely costly panel.

Therefore, the present invention proposes a formwork panel structure for placing concrete, which is provided with a visual window provided in the face plate of the panel, through which the state of filling of the concrete to be poured, defects of the concrete, etc. can be checked. The purpose is to

The present invention has been proposed in view of the above, and includes a formwork panel for placing concrete having connecting portions extending from the left and right side ends of the face plate portion to the back side, and an opening provided in the face plate portion. A closing body having a transparent surface part that closes from the back side and a receiving part that receives pressure from the back side is used , and the receiving part of the closing body is on the same plane as the tip of the back side of the connection part of the formwork panel A visual window characterized in that the formwork panel is connected in the left-right direction by fixing the horizontal flaps , and the closing body is integrally fixed to the back side of the opening. The present invention relates to a concrete casting formwork panel structure comprising
The transparency of the transparent surface portion is not specified, and may be generally called "translucent", for example, as long as it is visible through the transparent surface portion.

Further, according to the present invention, in the formwork panel structure, the closing member has a closing portion inserted into the opening and a restricting portion extending to the rear side of the closing portion. A concrete pouring form panel structure with a viewing window is also proposed.

Further, in the formwork panel structure of the present invention, the closing member includes a member forming the transparent surface portion, a member forming the stepped portion extending from the transparent surface portion to the back side, and a member forming the restricting portion. We also propose a concrete pouring form panel structure with a viewing window, characterized in that it consists of:

Further, the present invention is characterized in that, in the formwork panel structure, a mechanism for fastening a spacing member (separator) is used as a fixing means for integrally fixing the closing member to the back side of the opening. A concrete pouring form panel structure with a viewing window is also proposed.

A concrete casting form panel structure having a visual window according to the present invention comprises: The receiving portion is positioned on the same plane as the tip of the back side of the connection portion of the formwork panel, and the horizontal flap is fixed, so that the formwork panel is connected in the left-right direction and closed on the back side. Since the body is integrally fixed and the concrete placement space can be seen through the transparent surface (opening), it is possible to grasp the concrete filling condition and concrete defects. Even if the surface is "scratched" by a concrete aggregate or the like, it is possible to replace only the blocking member at a relatively low cost.

Further, when the closing member has a closing portion inserted into the opening and a regulating portion extending to the rear side of the closing portion, the transparent molding can be easily attached to the formwork panel. can be integrated into

In addition, when the blocking body is composed of a member forming the transparent surface portion, a member forming the stepped portion extending from the transparent surface portion to the back side, and a member forming the restricting portion, the transparent surface portion is formed. It is cheaper because only the parts need to be replaced.

Furthermore, when a mechanism for fastening a spacing member (separator) is used as a fixing means for integrally fixing the blocking body to the back side of the opening, the blocking body is firmly held, so that the concrete does not stick to the concrete. The viewing window can be stably maintained without fear that the closing member will come off due to the placing stress. .

1(a) is a perspective view showing a formwork panel and a closing body (transparent molded body) arranged side by side used in the formwork panel structure of the first embodiment of the present invention, and (b) an enlarged perspective view of the closing body. FIG. (a) Perspective view of a state in which the closing body (transparent molded body) is attached to the formwork panel in the first embodiment with horizontal flaps as seen from the back side, (b) Enlarged perspective view of the closing body seen from the back side is. (a) A front view of the state in which the closing body (transparent molded body) is attached to the formwork panel connected by the connecting member in the first embodiment with a horizontal flap as seen from the back side, (b) A side view thereof, ( (c) a bottom view thereof, (d) a perspective view showing a connecting member used, (e) an enlarged perspective view of the connecting member, and (f) a front view showing an example in which a closing body is composed of a plurality of members.

A formwork panel structure for placing concrete with a visual window according to the present invention comprises a formwork panel for placing concrete having connecting portions extending from the left and right side ends of a face plate portion to the back side, and a formwork panel provided on the face plate portion. and a closing member having a transparent surface portion that closes the opening from the back side, and the closing member is integrally fixed to the back side of the opening.

The formwork panel has a face plate portion in contact with a space in which concrete is placed, and connecting portions extending from the left and right side ends of the face plate portion to the back side. A reinforcing plate may be provided between the connecting portions in parallel with the connecting portion as in the embodiment, or a plurality of reinforcing plates may be provided instead of one.

The face plate portion is a portion located on the surface side where the opening portion is provided, and is often formed exclusively in a flat plate shape because it is in contact with the concrete placing space.
In addition, in the illustrated embodiment described later, the opening is formed in a vertically long rectangular shape when viewed from above, but the shape is not particularly limited, and the size thereof is not particularly limited, and may be horizontally long, circular, or the like. isn't it. Since this opening is a portion that serves as a viewing window, it is preferable that the opening be as wide as possible so as not to reduce the strength of the face plate portion, since visibility is improved.

The connecting portion is in the form of a side plate extending from the left and right side ends to the rear surface side, the connecting portion continues along the side edges, and has holes at regular intervals in the longitudinal direction.
The hole provided in the connecting portion is used as a mounting hole for mounting a connecting member for connecting laterally adjacent formwork panels in the illustrated embodiments described later.

This formwork panel is often formed vertically as shown in the illustrated embodiment described later, and the face plate portion and the connecting portion are often formed vertically.
An upper connecting portion and a lower connecting portion, which rise vertically in the same manner as the connecting portion and the reinforcing plate, may be provided at the upper and lower ends of the face plate portion to form a box-shaped formwork panel.

In addition, the connecting portion may have the same thickness from the face plate portion to the tip (the edge on the back side), the tip may be formed thick, or it may extend substantially parallel to the face plate portion. It may be formed with a flange that When the tip is formed thick or when the flange is formed substantially parallel to the face plate portion, the strength of the connecting portion itself is improved, and the strength of the formwork panel as a whole is also improved.

The formwork panel having such a structure does not particularly specify its material. For example, it may be a synthetic resin molded product such as FRP, an aluminum extrusion molded product, or a concrete mold made of wood, steel, or the like. Any material can be used as long as it is used as a frame.

In the illustrated embodiment, which will be described later, the connecting portion extends from the left and right ends of the face plate portion to the back side, and since it is made of FRP, two reinforcing plates are provided so as to divide the connecting portion into three. By providing an opening in the face plate portion located between the reinforcing plates, deterioration in the strength of the face plate portion is suppressed and wide visibility is obtained.

The closing member is not particularly limited in shape as long as it closes the opening from the rear surface side, and is not limited to one member, and may consist of a plurality of members. Therefore, the whole including the transparent surface portion may be formed of a transparent material (transparent molded body), or, for example, only the transparent surface portion may be formed of a transparent material, and the rest of the transparent surface portion may be opaque as long as the transparency of the transparent surface portion is not impaired. It may be formed of any material. Further, as described above, the transparency of the transparent surface portion of the closure is not specified, and if it is possible to see through the transparent surface portion, for example, it is generally called "semi-transparent". There may be. Therefore, it is possible to use a transparent resin molded body, a vitreous molded body, or the like.
This closing body is formed with a closing portion that is inserted into the opening. Considering the shape of the concrete after the form panel is removed, it is possible to provide a flat transparent surface portion as the closing portion. desirable.
In addition, it is desirable to provide a stepped portion extending to the back side of the opening as a configuration for closely closing the opening from the back side.
In addition, the restricting portion extending to the back side is formed, and includes a leg portion extending to the back side and a receiving portion that receives pressure from the back side.

In the present invention, the means for integrally fixing the closing body to the back side of the opening is not particularly limited, but a mechanism for fastening a spacing member (separator) to the concrete placing space can be used. Most effective. That is, by pressing one or more locations of the receiving portion of the closure with a member (fastening member, horizontal flap, etc.) that fastens and fixes the spacing member (separator), the closure is firmly secured to the back surface of the opening. can be fixed integrally to the In this case, the transparent molding may be pressed by a plurality of horizontal flaps or may be pressed by a single horizontal flap.

In the illustrated embodiment (first embodiment) to be described later, the whole including the transparent surface portion is made of a transparent material (transparent molded body), but the closing portion is inserted into the opening, and the opening from the closing portion and a regulating portion extending to the back side. The closing portion has a transparent surface portion and a stepped portion, and the restricting portion has a leg portion extending to the back side and a receiving portion to be fixed. Therefore, in this first embodiment, the flat concrete shape is maintained after the opening panel is removed by the flat transparent surface portion, the stepped portion tightly closes the opening, and the receiving portion is used to form the back surface. It can stably receive pressure from the side.

In addition, it is preferable that at least the surface (transparent surface portion) in contact with the concrete to be placed is treated to prevent scratch marks (scratches). That is, since the concrete composition to be placed contains solids such as coarse aggregate and fine aggregate, these solids come into contact with the transparent compact when the concrete composition is placed. This is to prevent the transparency from being remarkably impaired and becoming invisible due to scratch marks.
Examples of the scratch-preventing treatment include attaching a transparent film such as urethane to the surface of the transparent surface, and forming a transparent resin layer such as urethane on the surface of the transparent surface.

In particular, when the form panels are provided with holes (mounting holes) at predetermined intervals in the connecting portion as in the illustrated embodiment described later, the holes communicate with each other when the form panels are placed side by side. In this state, the connecting members can be attached to the mounting holes to integrally connect the formwork panels.

The formwork panel structure for placing concrete with a visual window of the present invention comprises a formwork panel 1 having an opening 110 and a closing body ( As shown in FIG. 2(a), the closing body 2 is pressed from the back side and fixed integrally.

1(b) and 2(b), the closing member 2 in the first embodiment has a closing portion 2X inserted into the opening and a rear side from the closing portion. It is a single member (transparent resin molded body) having a regulating portion 2Y extending to. The closing portion 2X is composed of a transparent surface portion 21 inserted into the opening 110 and a stepped portion 22 extending from the transparent surface portion 21 to the back side of the opening 110. The restricting portion 2Y is , and a receiving portion 24 that extends from the stepped portion 22 to the back side and receives pressure from the back side. A leg portion 23 extends from the stepped portion 22 to the receiving portion 24 .

The transparent surface portion 21 of the closing member 2 is a flat vertically elongated rectangular surface formed slightly smaller than the opening.
Further, the stepped portion 22 is a peripheral portion having an L-shaped cross section, which has a portion extending from the edge of the transparent surface portion 21 toward the back side and a portion extending outward.
Further, the leg portion 23 is a portion extending from the edge of the stepped portion 22 to the back surface side, and the receiving portion 24 formed on the back surface side and the tip 121 of the connecting portion 12 of the formwork panel 1 are connected to each other. are formed on the same plane.
Further, the receiving portion 24 is a portion extending outward from the edge of the leg portion 23, and is flush with the tip 121 of the connecting portion 12 when the closure 2 is attached to the formwork panel 1. It is located above.

In the formwork panel 1 of the illustrated embodiment, connecting portions 12, 12 extend vertically from the left and right ends to the back side on one side of a vertically long face plate portion 11, and the space between the connecting portions 12, 12 is divided into three spaces. Two reinforcing plates 13, 13 are provided parallel to the connecting portions 12, 12 so as to be divided, and each connecting portion 12 is formed with six holes 122 at regular intervals in the height direction. A through hole 111 is formed in advance in the face plate portion 11 at substantially the center of the two partition plates 13 , 13 so that a member such as a separator that maintains the gap between the concrete molds protrudes.
Further, the tips 121, 121 of the connecting portions 12, 12 are formed thicker toward the inside (reinforcing plate 13 side), and the tips 131, 131 of the reinforcing plates 13, 13 are formed to be thicker toward the outside (connecting portion 12 side). It is formed so as to be thicker.

FIG. 2(a) shows a state in which four formwork panels 1 are arranged side by side in the horizontal direction. , shows a state of fixing from the back side.
The horizontal flap 3 is a rectangular pipe steel material, and presses and fixes the upper and lower sides of a receiving portion 24 formed on the four circumferences of the closing body 2 from the back side. As described above, the receiving portion 24 of the closing member 2 is located on the same plane as the tip 121 of the connecting portion 12 of the formwork panel 1, so that the lateral flap 3 can be stably attached.

In addition, in FIG. 2(a), in order to clearly show the state of the horizontal flap 3 for fixing the closing member 2, specific fixing means, for example, connecting members 4 and separators in FIG. Spacing members, fastening members, etc. are omitted.

FIG. 3(a) shows a state in which laterally adjacent formwork panels 1, 1 are integrally connected using connecting members 4 shown in FIGS. 3(d) and 3(e).
As shown in FIG. 3(e), the connecting member 4 comprises a long arm portion 4a, a short arm portion 4b, and a body portion 41 connecting the arms 4a and 4b. The long arm portion 4a and the short arm portion 4b extend (extend) substantially parallel to the connection portion 12 of the formwork panel 1 in the completed mounting state, and the long arm portion 4a is folded upward. It has a curved shape, and the body portion 41 has a quadrangular prism shape with a rectangular cross section. A projecting portion 42 provided at the tip of the long arm portion 4a is formed so as to protrude inward, and is formed to have a slightly smaller diameter than the hole 122 provided in the connecting portion 12 of the formwork panel 1. . Further, the opposing distance between the long arm portion 4a and the short arm portion 4b is a clamping portion 43 which is formed to be twice the width of the tip 121 of the connecting portion 12 of the formwork panel 1. As shown in FIG.

The connecting member 4 is formed by inserting the projecting portion 42 into the hole 122 provided in the connecting portion 12 in a state in which the formwork panels 1, 1 are arranged so as to be adjacent to each other in the lateral direction. are sandwiched between the opposing long arm 4a and short arm 4b (sandwiching portion 43) and fixed integrally.
The procedure for attaching the connecting member 4 is as follows.
(1) First, the formwork panels 1, 1 are placed side by side in the lateral direction, and the connecting portions 12, 12 are arranged in an overlapping manner.
(2) In this state, the projecting portion 42 of the connecting member 4 is laterally inserted (pivoted) into the communicating hole 122 .
(3) After that, when the long arm portion 4a is rotated around the hole 122, the short arm portion 4b embraces the tip 121 of the connecting portion 12 of the other formwork panel (the connecting portions 12, 12 are , and held by the holding portion 43).

In the procedure (1), since the holes 122 are formed in the form panel 1 at predetermined intervals, the work of arranging the form panels 1 and 1 so that the holes 122 and 122 communicate with each other is easy. be.
Further, in the procedure (2), since the protruding portion 42 is formed at the tip of the curved long arm portion 4a, there is no hindrance to the insertion (operation) of the protruding portion 42, and the trunk portion 41 and the like are inserted. Other parts do not interfere with this work. In addition, the short arm portion 4b is arranged so as to face (the tip 121 of) the connecting portion 12 of the other formwork panel 1. As shown in FIG.
Furthermore, in the above procedure (3), the opposing interval (holding portion 43) between the long arm portion 4a and the short arm portion 4b was formed to be twice the width of the distal end 121 of the connecting portion 12. It can be held stably. In addition, since the opposing inner surfaces of the arms 4a and 4b are curved, the arms 4a and 4b can smoothly rotate while contacting the connecting portion 12. As shown in FIG.

Since FIG. 3B is a side view of FIG. Holes 122 are formed at predetermined intervals in the hole 122. It is clear that the hole 122 is a mounting hole for the connecting member 4. As shown in FIG.
Although not shown in FIG. 2, the horizontal flap 3 is provided with a hole 31 that communicates with the through hole 111 formed in the face plate portion 11 of the form panel 1 .
In short, the hole 31 and the through hole 111 are locations for fixing a spacing member (separator) (not shown). Since it is used, the closing member 2 can be efficiently fixed without requiring an additional structure such as a new fixing means.

3(c) is a bottom view of FIG. 3(a), so it is viewed from below the formwork panel 1. Since it is located on the same plane as the tip 121 of the connecting part 12, it is clearly shown that it can be attached stably. That is, since the front end 121 of the connecting portion 12 never interferes with fixing the horizontal flap 3, it can be attached stably.

As described above, the formwork panel structure of the illustrated embodiment has a configuration in which the closing body 2 is pressed from the back side into the opening 110 provided in the face plate portion 11 and fixed integrally. Since the space where concrete is placed can be visually recognized from the portion 110), it is possible to grasp the filling state of the concrete, defects of the concrete, and the like.
In addition, the formwork panel 1 of the illustrated embodiment is provided with an opening 110 in the face plate portion 11 located between the two reinforcing plates 13, 13, thereby suppressing a decrease in the strength of the face plate portion 11 and obtaining wide visibility. It is designed to

The closing member 2 of the illustrated embodiment includes a transparent surface portion 21 inserted into the opening portion 110, a stepped portion 22 extending from the transparent surface portion 21 to the back side of the opening portion 110, and the stepped portion Since it has the receiving part 24 which extends further from the shape part to the back side and receives pressure from the back side, the closing body 2 can be integrated with the formwork panel 1 very easily.
Further, as fixing means for pressing the closing body 2 from the back side, the closing body 2 is held by a lateral flap 3 that is fixed to a widely known fastening member, a spacing member (separator), or the like. The viewing window is stably maintained without fear that the closing member 2 may come off due to stress.

FIG. 3(f) shows an example in which the blocking member is composed of a plurality of members, and includes a member 2A forming a blocking portion 2X' and a restricting portion 2Y' extending from the blocking portion 2X' to the rear side. and a member 2B to be formed.
This closing member 2A is made of a transparent resin molded body like the closing member 2 in the first embodiment, and is flush with the face plate portion 11 of the mold panel 1, and has a transparent surface portion 21' serving as a window and a flange-like step. The restricting member 2B has a cylindrical leg 23' and a receiving portion 24' at the tip.

REFERENCE SIGNS LIST 1 form panel 11 face plate portion 110 opening 12 connecting portion 121 tip 122 hole 13 reinforcing plate 2 closing body (transparent molded body)
2X closed part 2Y restricting part 21 transparent surface part 22 stepped part 23 leg part 24 receiving part 3 horizontal flap 31 hole 4 connecting member 4a long arm part 4b short arm part 41 body part 42 projecting part 43 clamping part

Claims (4)

A formwork panel for placing concrete having connecting portions extending from the left and right side ends of the face plate portion to the back side, a transparent face portion closing the opening provided in the face plate portion from the back side, and receiving pressure from the back side. A closing body having a receiving part is used , and the receiving part of the closing body is positioned on the same plane as the tip of the back side of the connection part of the formwork panel, and the horizontal flap is fixed , so that the A form panel structure for placing concrete with a viewing window, wherein the form panels are connected in the left-right direction, and the closing member is integrally fixed to the back side of the opening. 2. The viewing window according to claim 1, wherein the closing member has a closing portion inserted into the opening and a restricting portion extending from the closing portion to the rear side. Concrete pouring formwork panel structure. 2. The closing member comprises a member forming the transparent surface portion, a member forming a stepped portion extending from the transparent surface portion to the rear surface side, and a member forming a restricting portion. 3. A formwork panel structure for placing concrete comprising the viewing window according to 2. 3. A concrete placing apparatus provided with a viewing window according to claim 1 or 2, wherein a mechanism for fastening a spacing member is used as a fixing means for integrally fixing the closing member to the back side of the opening. Installation formwork panel structure.

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