JP2813967B2 - Formwork plate - Google Patents

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 formwork for a building made of concrete, and more particularly to a novel formwork plate suitable for placing a relatively shallow concrete foundation.

[0002]

BACKGROUND OF THE INVENTION Conventionally, a form plate used for placing concrete is made by appropriately processing a plywood, which is a so-called control panel, or a metal-made standard shape suitable for circulation use. Things are also spreading. Of these, metal is required to be versatile due to its circulatory use.Therefore, in addition to the four peripheral edges of the generally flat main body, the outer surface opposite the concrete holding surface is also used. Rib-shaped reinforcement was provided as appropriate, and the outer surface of the plate-shaped main body had a shape that caused considerable unevenness. By the way, the present inventor has already devised a new construction foundation and a construction method as a foundation structure of a building, and has proposed the same as Japanese Patent Application No. Hei 6-201331. This is an attempt to develop a new construction foundation and its construction method that uses section steel as the strength member of the foundation, has good construction efficiency, can perform accurate construction, and keeps the foundation height low. It is.

In such a shallow foundation construction situation,
If a conventional metal mold plate is used, the method of handling (assembly work and removal work) of the mold plate almost follows the conventional method, and the advantages of the above-mentioned invention cannot be fully utilized. Specifically, on the foundation of such a structure, the height of the concrete is less than the height of one form plate, because the height is shallow, so as described later, As a result, the concrete can be held down by burying earth and sand or the like from the outside into the root cutting portion from below. However, in the conventional mold plate, even if it is removed in this manner, the mold plate cannot be removed unless soil and the like are almost removed, and the advantages of the above-mentioned invention cannot be utilized.

[0004]

[Technical matters attempted to be developed] 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. Things.

[0005]

Configuration of the Invention

Mold plate of the objective means of achieving] first aspect, with respect to the main body portion of the metallic flat plate, to form a top edge to its upper so as to protrude in a direction perpendicular to the surface of the body portion, the upper Rim
Body portion formed flat in a site other than made and forms a receiving slot of the operating rod against the top edge, the receiving
Remove from the concrete that are built on the main body by tilting so pries the operation rod to be inserted into the inlet
It is characterized by being used in such a way.

According to a second aspect of the present invention, in addition to the above requirements, in addition to the above requirements, the upper edge portion is formed of the same member as the main body portion, and is formed in an inverted channel shape having an open lower portion. It is characterized by the following.

According to a third aspect of the present invention, in addition to the above-mentioned requirements, in addition to the above requirements, the upper edge portion is cut off at one or both ends on the left and right sides, and a lower body portion is joined to an adjacent form plate. It is characterized by having an edge.

According to a fourth aspect of the present invention, in addition to the above requirements, a guide tube is provided in the receiving port of the operation rod along the main body. The present invention aims to achieve the above object.

[0009]

When forming a formwork from a formwork plate, the formwork plate is first connected in the longitudinal direction with its upper edge upwards in accordance with the design dimensions for placing concrete. The joining end of the mold plate is located in the upper edge portion of the adjacent mold plate or on the inner surface side thereof. And to fix in this state,
Adjacent form plates are connected to each other by being sandwiched from above the overlapping portions of the form plates by the connecting members.

On the other hand, the operating rod is inserted almost vertically from above into the receiving port at the upper edge, and the lower end of the operating rod is buried in the root-cut installation surface. In addition, a reinforcement erection bar is appropriately stretched between the facing form plates. And after forming the mold as described above, filling the gap between the root margin and the mold plate so as to surround the mold, and appropriately applying a release agent to the inner surface side of the mold. Concrete is poured.

After curing the concrete poured in for a certain period of time, the mold is removed. For removal, first, the connecting members connecting the form plates and the reinforcing erection bars are removed. Then, water is injected into the holding sand with a hose or the like, and the holding sand is liquefied as a whole to release the holding. Of course, if it can be removed without going through such a step, there is no need to perform such an operation.

When the holding of the holding sand is released,
The form plate is peeled off from the concrete surface by prying the operation rod inserted into the receiving port at the upper edge toward the inner surface and the outer surface. When the form plate is separated from the concrete surface, the operating rod is pulled out from the receiving port, and the form plate is pulled upward and removed from the foundation. It should be noted that it is possible to remove the form plate by pulling it upward without removing the holding sand as described above, particularly, in the present invention, the main body of the form plate is flat without reinforcing ribs or the like. , And the shallow depth of the foundation.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the illustrated embodiments. In FIG. 1, reference numeral B denotes a steel base beam formed by combining an I-beam or an H-beam with a reinforcing bar and the like, and reference numeral A denotes a steel base beam.
Is a mold formed by combining the mold plate 1 of the present invention. Further, the symbol G is a root margin, and the symbol S is a holding sand. The base beam B may be of any suitable configuration, such as a simple arrangement of reinforcing bars.

First, the mold A comprises 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.

Hereinafter, each member will be described. First, the formwork plate 1 of the present invention is formed by a rectangular metal flat plate as an example. In the present embodiment, the surface of the formwork plate 1 is referred to as an inner surface for the sake of explanation. And the opposite surface is defined as the outer surface. Specifically, the form 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 11 formed in the shape of an inverted channel that projects in a direction perpendicular to the surface of the main body 10 and opens downward when viewed from the side. A receiving port 1 for receiving the operation rod 2 in a substantially vertical direction is provided on the upper surface of the upper edge portion 11.
1a is open. The term “extending in a direction perpendicular to the surface of the main body 10” in the claims includes not only a strictly orthogonal direction but also an object that is inclined to some extent within a range for receiving the operation rod 2.

Further, as an 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. Have been. At one end of the form plate 1 as viewed from the outer surface side, a cutout 13 for a joint is formed by cutting off an upper edge portion 11, and the lower main body 10 serves as a joint end 14 with the adjacent form plate 1. I have. In the embodiment shown in FIG. 1, two types of the joint end 14 are shown, one having the right end and the other having the left end.
In assembling the whole, as shown in FIG. 3, a mold plate 1 having no joint ends 14 or a mold plate 1 having joint ends 14 at both left and right ends are used in combination with appropriate portions of the mold A. No problem. The upper edge portion 11 basically locks the operation rod 2, but a connecting member 3 described later.
In addition, it also has an action of fitting and connecting to the support portion 4a of the reinforcing erection bar 4.

Next, the operation rod 2 will be described. As shown in FIG. 2, this is, for example, a steel metal rod, which is inserted into the receiving port 11a of the upper edge portion 11 of the form plate 1 and rises on the lower surface of the portion where the concrete C is cast. In addition to supporting the plate 1, the form plate 1 is peeled off from the concrete C by twisting the form plate 1 when removing the form plate 1 as shown in FIG. In addition, as the shape of the operation rod 2, in addition to a circle, a square such as a triangle or a square can be appropriately selected.

Next, the connection member 3 will be described. As shown in FIG. 2, when the form plates 1 are connected to each other as shown in FIG. 2, the connected portions where the form plates 1 overlap are sandwiched from the upper end and connected. More specifically, a metal flat plate is bent to form a U-shaped cross section.

Next, the reinforcing bar 4 will be described. As shown in FIG. 2, this is a rod-shaped member which is stretched between facing form plates 1 and supports the form plate 1 so as not to be tilted. A U-shaped support portion 4a opened downward for connection is provided.

Reference numeral 5 denotes a corner plate, as shown in FIG. 2, which is provided as an example so as to prevent fresh concrete C from flowing out of a gap formed at a connecting portion bent in the outer surface direction of the form plate 1.

The form plate 1 of the present invention is constructed as described above. When using the form plate 1, first, the form plate 1 is placed in the longitudinal direction with the upper edge portion 11 upward according to the design dimensions. Connect. At this time, as shown in FIG. 8, the joint end 14 of the form plate 1 is located in the upper edge portion 11 of the adjacent form plate 1 or on the inner surface side thereof at the straight portion. Then, in order to fix in this state, the adjacent form plates 1 are connected to each other so as to be sandwiched from above the form plates 1 by the connection members 3. In addition, in the connecting portion bent in the outer surface direction, the joining end 14 is an obstacle, and therefore, as shown in FIG. Then, the corner plate 5 is sandwiched from above the form plate 1 by the connecting member 3 with the corner plate 5 along the inner surface side. Therefore, adjacent form plates 1 are connected via the corner plate 5.

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

While connecting the form plates 1 as described above, the reinforcing erection bars 4 are stretched between the facing form plates 1 as shown in FIG. More specifically, the supporting portion 4a of the reinforcing erection bar 4 is sandwiched between the upper edges 11 of the upper part of the form plate 1, and the reinforcing erection bar 4 is connected to the form plate 1. The reinforcing erection bar 4 can be installed at an appropriate place between the facing form plates 1, but it is preferable to provide the reinforcing erection bar 4 at the joint of the form plates 1, because the connection member 3 also plays a role.

After the mold A is formed as described above, the gap between the outer surface side of the mold A and the root margin G is filled and filled with holding sand S as shown in FIG. And hold down. Then, a mold release agent is appropriately applied to the inner surface side of the mold A, and the concrete C is cast. Since the mold plate 1 is firmly supported by the operation rod 2 and the reinforcing erection bar 4, for example, The concrete C can be formed into a desired shape without inclining the design dimensions, such as being tilted by a shock when the concrete C is cast.

After curing the concrete C for a certain period of time, the mold A is removed as shown in FIG. For removal, first, the connecting member 3 connecting the form plate 1 and the reinforcing erection bar 4 are removed. Then, water is injected into the holding sand S with a hose or the like, and the holding sand S is liquefied as a whole to release the holding. Of course, if it can be removed without going through such a step, there is no need to perform such an operation.

As a feature of the present invention, the operating plate 2 inserted into the receiving port 11a of the upper edge portion 11 is squeezed inward and outward as shown in FIG. Peeled off. Then, when the form plate 1 is separated from the concrete C surface, the operating rod 2 is pulled out from the receiving port 11a, and the form plate 1 is pulled upward and removed from the foundation. In the present invention, the removal of the form plate 1 by the upward pulling is particularly performed in such a manner that the main body 10 of the form plate 1 is flat without any reinforcing ribs and the depth of the foundation. Is possible because of the shallowness of Also, 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, the workability of installation and removal is excellent. 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 a formwork of an appropriate concrete placing place of a building.

[0027]

[Other Embodiments] The present invention is based on the above-described embodiment, 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 11 is configured in this manner, the forming process of the upper edge 11 is easy.

As for the shape of the upper edge portion 11, the side surface may be T-shaped as shown in FIG. 7B, or it may be formed in the lower part of the upper part of the main body portion 10 as shown in FIG. You may install it so that it may be located.

The upper edge 11 may be cut out in the length direction (lateral direction) as shown in FIG.

As shown in FIG. 8B, the upper edge 11
The handle 15 may be provided at the bottom to improve the workability at the time of removing the form plate 1.

FIG. 8C shows a form plate 1 for corners in which the joining ends 14 are bent in advance.
In the case of such a configuration, the corner plate 5 and the like are not required.

[0032]

The present invention has the above-described configuration and has the following effects. According to the form plate of the first aspect, the form plate 1 is provided with the upper edge portion 11 having the receiving port 11a for supporting the operation rod 2, so that the form plate 1 is installed. By inserting the operation rod 2 into the receiving opening 11a in a substantially vertical direction and piercing the bottom surface of the root margin G, for example, reinforcement of the posture of the form plate 1 can be reinforced. Also, at the time of removal, the form plate 1 can be peeled from the concrete C surface by prying the operation rod 2. Since the main body 10 of the form plate 1 is flat without reinforcing ribs or the like, it can be easily removed from the formed foundation without removing the holding sand S or the like.

According to the form plate of the second aspect, the upper edge portion 1
1 is a simple structure in which the upper end of a metal flat plate is bent toward the outer surface side and formed in an inverted channel shape with an open bottom, so that it can be implemented relatively inexpensively, and the manufacturing cost and the like are not required.

According to the third aspect of the present invention, there is no gap between adjacent ones of the form plates, so that the fresh concrete C does not flow out when the concrete C is poured. . In addition, despite having such an effect, the installation work of the formwork plate 1 may be simply performed as in the related art, and the workability is excellent.

According to the form plate of the fourth aspect, since the guide tube 12 is provided in the receiving port 11a of the operation rod 2, the operation rod 2 can be smoothly received in the vertical direction. The posture is maintained without collapse.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment in which a foundation is formed using a 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, operation rods, connecting members, and reinforcing bars.

FIG. 3 is a perspective view showing two other embodiments of a joint end of the same mold plate.

FIG. 4 is a perspective view showing how the formwork is formed using the same formwork plate and concrete is poured.

FIG. 5 is a vertical sectional side view showing a state of removing the formwork plate.

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

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

FIG. 8 is a perspective view showing another two embodiments of the upper edge portion and another embodiment of the joint end.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Form plate 2 Operating rod 3 Connecting member 4 Reinforcement construction bar 4a Support part 5 Corner plate 10 Main body 11 Upper edge 11a Receiving port 12 Guide tube 13 Cutout for joint 14 Joining end 15 Handle A Formwork B Foundation beam C Concrete G Neshiro S Hold sand

Claims (4)

(57) [Claims] An upper edge portion is formed above a main body made of a metal plate so as to project in a direction perpendicular to a surface of the main body portion, and the main body portion is flat at a portion other than the upper edge portion.
Formed in sputum, and receiving port of the operating rod against the upper edge
Made to form, are built on the main body portion by tilting so pries the operation rod to be inserted into the receiving opening
A formwork plate used to be detached from concrete . 2. The form 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 having an open lower portion. 3. The method according to claim 1, wherein the upper edge is cut off at one end or both ends at the left and right, and a lower body portion is a joint end with an adjacent form plate.
Formwork plate as described. 4. The mold plate according to claim 1, wherein a guide tube is provided in the receiving port of the operation rod along the main body.