JPH08209927A - Form board - Google Patents

Abstract

PURPOSE: To conduct assembly operation and removal operation simply. CONSTITUTION: An upper edge section 11 is formed so as to be projected in the direction orthogonal to the surface of a main body section 10, that is, in an inverted channel shape that a lower section is opened to the upper section of the main body section 10 made of a metal plate to the main body section 10, and the receiving ports 11a of control rods 2 are formed to the upper end section 11. Either one end of left and right ends or both ends in the upper edge section 11 is notched, and the main body section 10 in the lower section of one end is used as a joining end 14 with an adjacent form board 1. Guide pipes 12 are fitted into the receiving ports 11a of the control rods 2 along the main body section 10. Accordingly, assembly operation and removal operation are conducted simply in a short time, with a good workability, and the executed can be done at low cost.

Description

Detailed Description of the Invention

[0001]

[Object of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete formwork for a building, and more particularly to a novel formwork plate suitable for placing a relatively shallow concrete foundation.

[0002]

BACKGROUND OF THE INVENTION Conventionally, the formwork plate used for pouring concrete is a plywood so-called control panel that is appropriately processed and used, or a metal standard shape suitable for recycling. Things are becoming popular. Of these, the metal ones are required to have versatility due to being used in circulation, so not only on the four edges of the flat plate-shaped main body but also on the outer surface opposite to the concrete holding surface. A rib-shaped reinforcement was provided as appropriate, and the outer surface of the flat plate-shaped main body had a shape with considerable unevenness. By the way, the present inventor has already devised a new construction foundation and a construction method thereof as a foundation structure of a building / construction, and has proposed it as Japanese Patent Application No. 6-201331. This is an attempt to develop a new construction foundation and its construction method that use shaped steel as a strength member of the foundation, have good construction efficiency, can be accurately constructed, and can keep the foundation height low. Is.

In such a shallow foundation construction situation,
If a conventional metal mold plate is used, the method of handling (assembling or removing) the mold plate almost follows the conventional method, and the advantages of the previous invention cannot be fully utilized. Specifically, in the foundation of such a structure, since the height may be shallow, the height for placing concrete may be within the height of one formwork plate, and thus, as will be described later, The result is that pressing down when pouring concrete can be done by filling the root cutting part from the outside so that the root cutting part is filled from the outside. However, even if the conventional form plate is removed in this way, the form plate cannot be removed unless the earth and sand are removed at the time of removal, and the advantage of the above-described invention cannot be utilized.

[0004]

[Technical Items Attempted to Develop] The present invention has been made in view of such a background, and an attempt has been made to develop a new form plate which can be easily assembled and removed. It is a thing.

[0005]

Configuration of the Invention

First of all, the mold plate according to the first aspect of the present invention has a main body made of a flat metal plate, and an upper edge portion formed above the main body so as to project in a direction orthogonal to the surface of the main body. This upper edge is characterized in that a receiving port for the operating rod is formed.

In addition to the above requirements, the mold plate according to a second aspect of the invention is such that the upper edge portion is formed of the same member as the main body portion, and is formed in an inverted channel shape whose lower portion is open. Features.

Further, in addition to the above requirements, the mold frame according to a third aspect of the present invention is such that the upper edge portion is cut out at either one of the left and right ends or both ends thereof, and the lower main body portion is joined to an adjacent mold frame plate. It is characterized by the end.

Further, in addition to the above requirements, the form plate according to claim 4 is characterized in that a guide tube is provided along the main body in the receiving port of the operating rod. The above objects are intended to be achieved by these inventions.

[0009]

In constructing a mold with a mold plate, first, the mold plates are connected in the longitudinal direction with the upper edge of the mold plate facing upward in accordance with the design dimensions for placing concrete. The joint end of the form plate is located within the upper edge of the adjacent form plate or on the inner surface side thereof. And to fix in this state,
The adjacent form frame plates are connected to each other so as to be sandwiched by the connecting member from above the overlapping portion of the form frame plates.

On the other hand, the operating rod is inserted into the receiving opening of the upper edge portion from above substantially vertically, and the lower end of the operating rod is embedded in the installation surface cut off. In addition, a reinforcing erection bar is stretched between the facing form plates. Then, after forming the formwork as described above, filling the gap between the root margin and the formwork plate so as to surround the formwork, and appropriately apply a release agent to the inner surface side of the formwork. Concrete is placed.

Then, the concrete that has been cast for a certain period of time is cured, and then the form is removed. When removing, first remove the connecting member connecting the formwork plate and the reinforcing erection bar. Then, water is injected into the pressing sand with a hose or the like, and the pressing sand is liquefied as a whole so that the pressing is released. Of course, it is not necessary to perform such work if it can be removed without going through such steps.

When the pressing sand is released,
The mold plate is peeled off from the concrete surface by twisting the operation rod inserted into the inlet of the upper edge portion toward the inner surface side and the outer surface side. When the form plate is separated from the concrete surface, the operation rod is pulled out from the receiving port, and the form plate is pulled out upward to remove it from the foundation. It should be noted that it is particularly preferable in the present invention that the main body of the mold plate is flat without any reinforcing rib or the like in order to remove the mold plate by pulling it upward without removing the pressing sand. It is possible because of the shallow depth of the foundation.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to illustrated embodiments. In FIG. 1, symbol B is a steel foundation beam formed by combining I-shaped steel and H-shaped steel with reinforcing bars and the like, and symbol A
Is a formwork constructed by combining formwork plates 1 of the present invention. The symbol G is the root and the symbol S is the sand. The foundation beam B may be of an appropriate structure such as a reinforcing bar.

First, the mold A is composed of the mold plate 1 of the present invention, an operation rod 2 as an example, a connecting member 3, and a reinforcing erection bar 4.

Each member will be described below. First, the formwork plate 1 of the present invention is formed by a rectangular metal flat plate as an example. In this embodiment, for the sake of explanation, the surface of the formwork plate 1 is the inner surface which is in contact with the concrete C to be cast. The outer surface is defined as the opposite surface. Specifically, the formwork plate 1 is formed by bending the upper end of a rectangular metal flat plate to the outer surface side, and as shown in FIG.
And an upper edge portion 11 formed in a reverse channel shape, which projects in a direction orthogonal to the surface of the main body portion 10 and is open downward at the side view. On the upper surface of the upper edge portion 11, the receiving port 1 for receiving the operation rod 2 in a substantially vertical direction is provided.
1a is opened. It should be noted that the term “projecting in the direction orthogonal to the surface of the main body 10” in the claims means not only the strict sense in the strict sense, but also the thing that is inclined to some extent within the range for receiving the operation rod 2.

As a further example, a cylindrical guide tube 12 is provided in the receiving port 11a along the main body 10 to smoothly receive the operating rod 2 in the vertical direction and maintain its posture. Has been. Further, as seen from the outer surface side, one end of the mold plate 1 is provided with a joint notch 13 which is a notch in the upper edge portion 11, and the lower main body portion 10 serves as a joint end 14 with the adjacent mold plate 1. There is. In the embodiment of FIG. 1, two types of joint ends 14 are shown, one on the right side and one on the left side.
In assembling the whole, as shown in FIG. 3, the form plate 1 having no joint end 14 or the form plate 1 having joint ends 14 at the left and right ends is used in combination at an appropriate position of the form A. I don't mind. The upper edge portion 11 basically locks the operation rod 2, but the connecting member 3 described later.
It also has an action of fitting and connecting to the supporting portion 4a of the reinforcing erection bar 4.

Next, the operating rod 2 will be described. As shown in FIG. 2, this is a steel metal rod as an example, which is inserted into the receiving port 11a of the upper edge portion 11 of the form plate 1 and is erected on the lower surface of the portion where the concrete C is cast, The plate 1 is supported, and the form plate 1 is peeled off from the concrete C by prying it when the form plate 1 is removed as shown in FIG. In addition to the circular shape, the operating rod 2 may have a rectangular shape such as a triangular shape or a square shape.

Next, the connecting member 3 will be described. As shown in FIG. 2, when the mold frame plates 1 are connected to each other and installed, the overlapped connection parts of the mold frame plates 1 are sandwiched and connected from the upper end. Specifically, a metal flat plate is bent to form a U-shaped cross section.

Next, the reinforcing erection bar 4 will be described. As shown in FIG. 2, this is a rod-shaped member that is stretched between the facing formwork plates 1 and supports the formwork plate 1 so that it does not tilt. It is provided with a U-shaped support portion 4a which is opened downward for connection.

Further, reference numeral 5 is a corner plate, which is provided so that the fresh concrete C does not flow out from the gap formed in the connecting portion bent toward the outer surface of the form plate 1 as shown in FIG.

The formwork plate 1 of the present invention is constructed as described above, and when it is used, the formwork plate 1 is first set in the longitudinal direction with the upper edge portion 11 facing upward in accordance with the design dimensions. Connect to each other. At this time, in the straight line portion, as shown in FIG. 8, the joint end 14 of the mold frame plate 1 is positioned inside the upper edge portion 11 of the adjacent mold frame plate 1 or on the inner surface side thereof. In order to fix in this state, adjacent form frame plates 1 are connected to each other so as to be sandwiched by the connecting member 3 from above the form frame plates 1. Further, since the joint end 14 becomes a hindrance in the connecting portion bent in the outer surface direction, as shown by way of example in FIG. Then, with the corner plate 5 along the inner surface side, the connecting member 3 sandwiches the mold plate 1 from above. Therefore, the adjacent form plates 1 are connected via the corner plates 5.

On the other hand, the operating rod 2 is inserted into the receiving port 11a of the upper edge portion 11 substantially vertically from above, and the lower end of the operating rod 2 is embedded in the installation surface of the lower surface.

While connecting the form plates 1 as described above, the reinforcing erection bar 4 is stretched between the facing form plates 1 as shown in FIG. Specifically, the supporting portion 4a of the reinforcing erection bar 4 is sandwiched by the upper edge portion 11 of the upper part of the form plate 1 to connect the reinforcing erection bar 4 to the form plate 1. The reinforcing erection bar 4 can be installed at an appropriate place between the facing formwork plates 1, but it is preferable to provide it at the joining part of the formwork plate 1 because it also plays the role of the connecting member 3.

After forming the form A as described above, as shown in FIG. 4, the space between the outer surface of the form A and the root G is filled with filling sand S or the like to fill the form A. And hold down. Then, a mold release agent is appropriately applied to the inner surface of the mold A to pour concrete C, but since the mold plate 1 is firmly supported by the operation rod 2 and the reinforcing erection bar 4, for example, It is possible to form the concrete C into a desired shape without tilting the concrete C due to a shock when the concrete C is placed and thereby changing its design dimension.

After the concrete C is cured for a certain period of time, the form A is removed as shown in FIG. For removal, first, the connecting member 3 connecting the form frame plate 1 and the reinforcing erection bar 4 are removed. Then, water is injected into the pressing sand S with a hose or the like, and the pressing sand S is liquefied as a whole, so that the pressing is released. Of course, it is not necessary to perform such work if it can be removed without going through such steps.

As a feature of the present invention, as shown in FIG. 5, the operating rod 2 inserted into the receiving port 11a of the upper edge portion 11 is twisted to the inner surface side and the outer surface side so that the formwork plate 1 is fixed to the concrete C surface. Peel from. When the formwork plate 1 is separated from the concrete C surface, the operation rod 2 is pulled out from the receiving port 11a, and the formwork plate 1 is pulled out upward to be removed from the foundation. In addition, in order to remove the mold frame plate 1 by pulling it upward, the main body portion 10 of the mold frame plate 1 is flat without any reinforcing ribs and the depth of the foundation is particularly high in the present invention. It is possible because of the shallow depth. Further, the formwork plate 1 of the present invention can be applied not only to a shallow foundation but also to a deep foundation, and even when applied to such a deep foundation, it is excellent in installation workability and removal workability. Further, the formwork plate 1 of the present invention can be applied not only to the formwork A at the time of constructing the foundation, but also to the formwork at an appropriate concrete pouring place of a building.

[0027]

Other Embodiments The present invention is based on the above-mentioned basic embodiments, but may be modified as follows. That is, FIG. 7A shows an embodiment in which the upper edge portion 11 has an inverted L shape when viewed from the side. When the upper edge portion 11 is configured in this way, the forming processing of the upper edge portion 11 is easy.

The upper edge portion 11 may have a T-shaped side surface as shown in FIG. 7 (b), or may be in the lower portion of the upper portion of the main body portion 10 as shown in FIG. 7 (c). You may install so that it may be located.

The upper edge portion 11 may be cut out in the longitudinal direction (lateral direction) as shown in FIG. 8 (a).

Further, as shown in FIG. 8B, the upper edge portion 11
A handle 15 may be provided on the above so as to improve workability at the time of removing the form frame plate 1.

Further, FIG. 8 (c) shows a form plate 1 for a corner in which the joint end 14 is bent in advance.
With this structure, the corner plate 5 and the like are not necessary.

[0032]

The present invention has the above-described configuration and has the following effects. According to the formwork plate of claim 1, since the formwork plate 1 is provided with the upper edge portion 11 having the receiving port 11a for supporting the operation rod 2, when the formwork plate 1 is installed, By inserting the operating rod 2 into the receiving port 11a in a substantially vertical direction and piercing the bottom surface of the root G, for example, the posture maintenance of the form frame plate 1 can be reinforced. Further, at the time of removal, the mold plate 1 can be peeled from the concrete C surface by twisting the operation rod 2. Since the main body portion 10 of the mold frame plate 1 is flat without any reinforcing rib or the like, it can be easily removed from the foundation formed without removing the pressing sand S and the like.

According to the form plate of claim 2, the upper edge portion 1
1 has a simple structure in which the upper end of the metal flat plate is bent toward the outer surface side and is formed in an inverted channel shape with the lower part open, so that it can be implemented at a relatively low cost and does not require manufacturing cost.

According to the formwork plate of claim 3, since no gap is formed between the adjacent formwork plates 1, the fresh concrete C does not flow out when the concrete C is placed. . Further, in spite of having such an effect, the work of installing the form plate 1 can be simply put as in the conventional case, and the workability is excellent.

According to the frame plate of claim 4, since the guide tube 12 is provided in the receiving port 11a of the operating rod 2, the operating rod 2 can be smoothly received in the vertical direction, and The posture is maintained and maintained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment in which a foundation is formed using the mold plate of the present invention.

FIG. 2 is a perspective view showing an embodiment in which a mold is formed using the same mold plate, operating rod, connecting member, and reinforcing erection bar.

FIG. 3 is a perspective view showing another example of two kinds of joint ends of the same mold plate.

FIG. 4 is a perspective view showing a state in which a mold is constructed using the same mold plate and concrete is poured.

FIG. 5 is a vertical cross-sectional side view showing the removal of the above mold frame plate.

FIG. 6 is a perspective view showing a completed construction foundation.

FIG. 7 is a perspective view showing various other embodiments of the upper edge portion of the mold plate of the present invention.

FIG. 8 is a perspective view showing another two examples of the upper edge portion and another one example of the joining end of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Form plate 2 Operation rod 3 Connecting member 4 Reinforcement installation bar 4a Support part 5 Corner plate 10 Main body part 11 Upper edge part 11a Receiving port 12 Guide tube 13 Notch for joint 14 Joint end 15 Handle A Form B Foundation beam C Concrete G Roots S Holding sand

Claims (4)

[Claims] 1. A main body made of a flat metal plate is formed with an upper edge portion projecting above the main body portion in a direction orthogonal to the surface of the main body portion, and a receiving opening for an operating rod is provided at the upper edge portion. Formed plate characterized by being formed. 2. The mold plate according to claim 1, wherein the upper edge portion is formed of the same member as the main body portion, and is formed in an inverted channel shape whose lower portion is opened. 3. The upper edge portion is notched at either one end or both ends on the right and left sides, and the main body portion below the upper edge portion is a joining end with an adjacent form plate.
Formwork plate as described. 4. The mold plate according to claim 1, 2 or 3, wherein a guide tube is provided inside the receiving opening of the operation rod along the main body.