JP7440284B2 - Grout formwork and column base - Google Patents

Description

The present invention relates to a grout form and a column base, and particularly to a grout form used when filling a gap between a base plate and a foundation with grout in a column base of a building, and a column base equipped with the grout form.

There is an exposed type of column base that supports the superstructure of a building.
An exposed column base consists of a column that supports the superstructure, a foundation that supports the column (column pedestal foundation), a base plate that is attached to the lower end of the column and connected to the foundation with anchor bolts, and the base plate and foundation. It mainly consists of a grout formwork used to fill the gaps in the grout with grout material.
Generally, the surroundings of the base plate, anchor bolts, and grout formwork are buried in concrete or mortar (see, for example, Patent Document 1).
Note that the grout formwork may be buried in the concrete (mortar) or may be removed before being buried in the concrete.

Japanese Patent Application Publication No. 6-158818 Japanese Patent Application Publication No. 2008-196121 Japanese Patent Application Publication No. 10-331170

By the way, when filling the gap between the base plate and the foundation with grout, various grout forms have been proposed in order to easily prevent the grout from flowing out (see, for example, Patent Documents 2 and 3).
Under these circumstances, there was a need for grout formwork that would ensure the aesthetic appeal of column bases by making it easier to prevent grout from flowing out, and improve workability by making assembly easier.
In particular, there has been a need for a grout formwork that can be easily assembled even when constructing a building on a narrow site and does not require the use of special tools.

In addition, to explain the conventional construction procedure for exposed type column bases, first perform "foundation work" to construct the column base foundation or cloth foundation, then install the column and base plate on the column base foundation, and then ``Construction work (including grouting work)'' will be carried out by injecting grout into the area. Then, after carrying out the "second foundation work" in which the pillars are covered with fireproof covering material and the base plates and anchor bolts are buried in concrete or mortar, the "second erection work" is carried out to assemble the first floor exterior walls, etc. Then, after carrying out ``exterior work,'' which involves installing ventilation cutouts on the pillar base, ``plastering work'' is carried out, which involves applying mortar, undercoat, and topcoat (mainly consists of 6 steps).
In this case, after performing the "foundation work" and "erecting work", it is necessary for the foundation workers to carry out "second foundation work" again in order to bury the base plate of the column base with concrete (mortar). there were. As a result, the construction procedure has become complicated, making arrangements for each contractor complicated, leading to increased costs and delays in the construction period due to wait times by the constructors.
Therefore, there was a need for a column base that could simplify the construction procedure.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a grout formwork and a column base with improved workability.
Another object of the present invention is to provide a grout form and a column base with improved design.
Another object of the present invention is to provide a grout formwork and column base that simplify the construction procedure.

The above-mentioned problem can be solved by the grout formwork of the present invention, which is used when filling a gap between a base plate and a foundation with grout in a column base of a building, and is used to prevent the grout from flowing out. a first member and a second member that are provided to face each other around the base plate and are connected to surround the base plate; The attachment part provided on the first member is removably attached to the attached part provided on the second member, and when the first member and the second member are connected, the first member is arranged to partially overlap with the second member , the first member and the second member are connected to form a frame shape, and the inner surface of each of the first member and the second member has the A sealing material for preventing grout leakage is attached, and the sealing material is arranged so as to surround the base plate, and the sealing material is arranged at a corner when a frame is formed by the first member and the second member. The solution is to avoid the
With the above configuration, it is possible to improve workability and realize a grout formwork with improved design of the column base.
Specifically, in the direction in which the first member and the second member face each other, the attachment part of the first member is removably attached to the attached part of the second member, so the grout formwork can be easily assembled. It is possible to improve workability.
Further, since the first member and the second member are provided so as to face each other around the base plate, and the first member and the second member are partially overlapped and connected, it is easy to prevent the grout from flowing out. It is possible to improve the design of the column base.
In addition, a sealing material is attached to the inner surface of each of the first member and the second member, and the sealing material is arranged to surround the base plate, thereby preventing leakage of the grouting material when filling the grouting material. It becomes easier to do.
In addition, since the sealing material is placed avoiding the corners of the frame formed by the first and second members, the grout is filled in the corners, which are the most difficult parts of the grouting formwork. It is possible to visually check from above whether or not the
Moreover, when filling with grout material, air that tends to accumulate at corners within the grout formwork can be efficiently released. Therefore, the finish of grouting work is improved.

Further, the above-mentioned problem can be solved by the grout formwork of the present invention, which is used when filling grout into the gap between the base plate and the foundation in the column base of a building, and which prevents the grout from flowing out. the first member and the second member are provided so as to face each other around the base plate and are connected to surround the base plate, and in the opposing direction in which the first member and the second member face each other , the attachment part provided on the first member is removably attached to the attached part provided on the second member, and when the first member and the second member are connected, the attachment part provided on the first member one member is arranged to partially overlap the second member, and the first member and the second member have a first side wall portion arranged to face the base plate, and a length of the first side wall portion. a pair of second side walls that are bent from both ends of the direction and extend so as to sandwich the base plate; and a first bottom that projects outward from a lower end of the first side wall and is supported by the foundation. a wall portion, and a pair of second bottom wall portions that respectively protrude outward from lower end portions of the pair of second side wall portions and are supported by the foundation; A second side wall portion of the second member is connected to the second side wall portion of the second member by partially overlapping in a direction crossing the opposing direction, and the second bottom wall portion of the first member is connected to the second side wall portion of the second member, and the second bottom wall portion of the first member is connected to the second side wall portion of the second member. This problem is solved by partially overlapping and connecting the second bottom wall portion of the second member in the vertical direction.
As described above, since the second side wall and second bottom wall of the first member partially overlap and are connected to the second side wall and second bottom wall of the second member, the grout It is possible to further prevent outflow, and the design of the column base can be improved.

At this time, a folding wall part that can be folded back with respect to the first bottom wall part is formed at an end in the length direction of the first bottom wall part, and by folding back the folding wall part, the first bottom wall part can be folded back. A corner portion may be formed to connect the wall portion and the second bottom wall portion, and the folded-back wall portion may be arranged to partially overlap the second bottom wall portion.
As described above, when the folded wall part is folded back, a corner part is formed to connect the first bottom wall part and the second bottom wall part, so when filling the grout material into the grout formwork, A portion (corner portion) between the first bottom wall portion and the second bottom wall portion, which is a portion where the grout material is relatively likely to leak, can be reinforced with the folded wall portion. As a result, it becomes easier to prevent leakage of the grout material.
In addition, since the folded back wall part is arranged so as to partially overlap the second bottom wall part, it is possible to further prevent the grout from flowing out, thereby improving the design of the column base. I can do it.
In particular, when the first member and the second member are formed by bending a steel plate, for example, the first member and the second member can be manufactured relatively easily from one steel plate. Therefore, costs can be reduced in manufacturing the grout formwork.

At this time, the first member and the second member are provided as a pair, are connected so as to surround the entire circumference of the base plate, and each have the attachment portion and the attached portion that can be attached to the attachment portion. It is good to have this.
As described above, the first member and the second member are provided as a pair and are connected so as to surround the entire circumference of the base plate, thereby suppressing the cost (material cost) of the components of the grout formwork. be able to.
Furthermore, as described above, the first member and the second member are provided as a pair, and each has an attachment part and an attached part, so for example, the first member and the second member have the same shape. By using a member consisting of the above, the cost of the component parts can be further reduced, and the management of the component parts becomes easier. Also, the grout formwork can be assembled more easily.

At this time, the first member and the second member are connected to form a frame, and a second member is provided on the bottom surface of each of the first member and the second member to prevent leakage of the grout material. A sealing material is preferably attached, and the second sealing material is preferably arranged around the entire circumference of the base plate.
With the above configuration, it is possible to further prevent leakage of the grout material when filling the column with the grout material, and it is possible to improve the design of the column base.

The problem also includes the grout formwork, a column that supports the building, the foundation that supports the column, the base plate that is attached to the lower end of the column and connected to the foundation, and the base plate that is attached to the lower end of the column and connected to the foundation. The problem is also solved by a column pedestal comprising a column pedestal cover member made of a porous material, which is attached to the column, and is provided to cover the lower end of the column, the base plate, and the grouting form.
As mentioned above, by substituting the concrete (mortar) that was conventionally provided to cover the base plate etc. with a column base cover member made of porous material, it is possible to bury the base plate etc. with concrete (mortar). There is no need to carry out "foundation work" again. The column pedestal cover member can be attached, for example, at the time of "exterior work" in which a fireproof covering material or a ventilation partition is installed on the column base body.
Therefore, it is possible to realize a column base with a simplified construction procedure.

According to the grout formwork and column base of the present invention, it is possible to improve workability.
In addition, it is possible to easily prevent the grout from flowing out and improve the design of the column base.
In addition, by simplifying the construction procedure, it is possible to suppress cost increases and improve construction delays caused by the waiting of each construction company.

FIG. 2 is a perspective view showing a column base according to the present embodiment, and shows a state in which the column is attached to a foundation at a projecting corner of a building. FIG. 2 is a perspective view of a column base, showing a state in which the column is attached to a foundation in the middle of a building. It is a figure which shows the state which attached the grout formwork to the column base of FIG. 1A. It is a figure which shows the state which attached the grout formwork to the column base of FIG. 1B. It is a figure which shows the state where the covering material was attached to the column base of FIG. 2A. It is a figure which shows the state where the covering material was attached to the column base of FIG. 2B. It is a figure which shows the state which attached the column base cover member to the column base of FIG. 3A. It is a figure which shows the state which attached the column base cover member to the column base of FIG. 3B. FIG. 3 is a vertical cross-sectional view of the completed column base. It is a process diagram showing the construction method of the column base. It is an exploded perspective view showing the grout formwork of this embodiment. It is an enlarged view of the main part of a grout formwork, Comprising: It is a perspective view which shows a mounting nail and a mounting hole. It is an enlarged view of the principal part of a grout formwork, Comprising: It is a perspective view which shows a folded wall part. It is a perspective view which shows the state where the folded-back wall part was folded back.

Embodiments according to the present invention will be described below with reference to FIGS. 1-9A and 9B.
This embodiment consists of a column that supports a building, a foundation that supports the column (column base foundation), a base plate that is attached to the lower end of the column and connected to the foundation, and a gap between the base plate and the foundation that is filled with grout. A column pedestal comprising a grout formwork used when grouting, and a column pedestal cover member installed on the foundation and provided to cover the lower end of the column, the base plate, and the grout formwork, the column pedestal comprising: The formwork is provided to face each other around the base plate, and has a first member and a second member connected to surround the base plate, and has a first member and a second member connected to each other so as to surround the base plate. The attachment part provided on one member is removably attached to the attached part provided on the second member, and the first member is connected to the second member by partially overlapping the same. This invention relates to the invention of "column base".

As shown in FIGS. 1A and 1B-FIG. 5, the column base 1 of this embodiment is an exposed type column base, and is installed at the protruding corner between the reinforced concrete cloth foundations B1 in the building B. It is installed in the middle part of the cloth foundation B1 in the building B.
The column pedestal 1 (column pedestal foundation 3) is provided with a larger width in the thickness direction than the cloth foundation B1, and is formed with a shorter length in the height direction than the cloth foundation B1.

As shown in Figs. 1A and B-Fig. ), a base plate 4 attached to the lower end of the column 2 and connected to the foundation 3 by an anchor bolt 5, and a grout formwork 10 used when filling the gap between the foundation 3 and the base plate 4 with grout material 6, A covering material 20 that covers the lower end of the column 2, and a column base cover that is attached to the foundation 3 to cover the lower end of the column 2, the base plate 4, the grout formwork 10, and the covering material 20. It mainly consists of a member 30 and a coating material 40 applied to the outer surface of the column pedestal cover member 30.
Note that the foundation 3 is formed to be lower than the upper end of the cloth foundation B1. Therefore, a space can be formed on the upper surface of the foundation 3 in which the base plate 4, anchor bolts 5, grout formwork 10, covering material 20, column base cover member 30, etc. are installed.

The pillar 2 and the foundation 3 are each formed to have a square cross section. The pillar 2 is connected to a steel column (not shown) that supports the superstructure of the building B, and the base plate 4 and the foundation 3 are attached to the upper surface of the foundation 3. It is fixed via anchor bolts 5.
The base plate 4 is made of a square plate member, and a pillar 2 is attached to the center of the base plate 4 so as to pass through the base plate 4.Anchor bolts 5 are attached to the four corners of the base plate 4 so as to pass through the base plate 4. . Further, at predetermined positions between the four corners on the upper surface of the base plate 4, an injection hole 4a for injecting the grout material 6 and a ventilation hole 4b for venting when the grout material 6 is injected are formed. The injection hole 4a and the ventilation hole 4b are arranged one by one so as to sandwich the pillar 2. To explain in detail, as shown in FIGS. 2A and 2B, the grout form 10 (the first member 11 and the second member ) is placed avoiding the position corresponding to the connecting part.
The anchor bolt 5 is fixed to the foundation 3 and is arranged so as to partially protrude from the upper surface of the foundation 3. Specifically, the base plate 4 is fastened to the foundation 3 by tightening the nut with the protrusion of the anchor bolt 5 penetrating the base plate 4.

The grout material 6 is, for example, a non-shrinking mortar with fluidity, and is injected from the injection hole 4a formed in the base plate 4 and filled into the area surrounded by the grout formwork 10, thereby forming the foundation. 3 and the base plate 4.
As shown in FIGS. 2A and 2B, the grout formwork 10 is formed by bending a steel plate, and is provided so as to face each other around the base plate 4. First members 11 are connected to surround the base plate 4. and the second member 12.
Details of the grout formwork 10 will be described later.

As shown in FIGS. 3A and 3B, the covering material 20 is a fireproof covering material made of rock wool that is wrapped around the pillar 2 so as to surround the entire circumference of the pillar 2 when placed on the base plate 4. is attached to.
Note that the covering material 20 is not limited to rock wool, and may be made of a noncombustible material such as a gypsum board or a calcium silicate board.

As shown in FIGS. 4A and 4B, the column pedestal cover member 30 is a cover for a column pedestal made of a porous material (for example, expanded polystyrene), and is a cover for the column base made of a porous material (e.g., expanded polystyrene), and is a cover for the column base made of a porous material (e.g., expanded polystyrene), and is a cover for the column base made of a porous material (e.g., styrofoam), and is a cover for the column base made of a porous material (e.g., expanded polystyrene). (Mortar) This is used as an alternative to burial.
The column pedestal cover member 30 has a substantially L-shaped cross section, and a plurality of column pedestal cover members 30 are combined and attached on the foundation 3.
Specifically, a total of three column pedestal cover members 30 are connected at the projecting corners of building B, and a total of two column pedestal cover members 30 are connected at the middle portion of building B.
The column base cover member 30 includes a cover side wall portion 31 that covers the base plate 4, a cover top wall portion 32 that covers the covering material 20, and a cover inclined wall portion 33 that connects the cover side wall portion 31 and the cover top wall portion 32. It is mainly composed of.

As shown in FIG. 5, the coating material 40 is a fluid mortar that is applied to the outer surface of the column pedestal cover member 30 in order to ensure the impact resistance of the column pedestal cover member 30.
When the coating material 40 is applied to the column base cover member 30, the outer surface of the column base cover member 30 with the coating material 40 attached is substantially flush with the outer surface of the foundation 3, so that there is no difference in level. There is.

<Construction method of column base>
Next, a method of constructing the column base 1 will be explained based on FIG. 6.
First, as shown in FIGS. 1A and 1B, the foundation work starts with a "foundation work" process (step S1) in which a foundation work worker constructs the column foot foundation 3 and the cloth foundation B1.

Thereafter, as shown in FIGS. 1A and B and FIGS. 2A and B, the construction worker fixes the columns 2 and base plate 4 to the foundation 3 with anchor bolts 5, and surrounds the base plate 4 on the foundation 3. After the grout formwork 10 is attached to the base plate, "erecting work (including grouting work)" is performed to inject grout material 6 into the gap between the foundation 3 and the base plate 4 (step S2).
Then, the construction worker assembles the first floor exterior wall panel B2 (step S3).

Thereafter, as shown in FIGS. 3A and 4A and 4A and B, the exterior carpenter coats the lower end of the column 2 with the covering material 20, and then covers the lower end of the column 2, the base plate 4, the grout formwork 10, and the covering material 20. "Exterior work" is performed to attach the column base cover member 30 so as to cover the material 20 (step S4).
In addition, after installing the column pedestal cover member 30, it is preferable that the carpenter directly attaches the ventilation partition B3 between the cloth foundation B1, the column pedestal cover member 30, and the outer wall panel B2.

Thereafter, as shown in FIG. 5, a plastering contractor applies a coating material 40 to the outer surface of the column pedestal cover member 30, and then applies a coating material (not shown) to the column pedestal foundation 3, column pedestal cover member 30, and cloth foundation B1. "Plastering" is performed to apply a base coat material and a top coat material (step S5), and this work process is completed.
Note that after the applied coating material 40 dries, an undercoat material (for example, a sealerless color material) is applied to the outer surfaces of the column base 3, column base cover member 30, and cloth foundation B1 using a roller or the like. After the base coat has dried, it is best to apply a top coat using a roller or the like.

With the above method, it is possible to realize a construction method with a simplified construction procedure.
Specifically, as shown in Figure 6, the construction work for column base 1 can be completed in the steps of "foundation work,""erectingwork,""exteriorwork," and "plastering work." This simplifies the procedure and makes arrangements for construction companies simpler.
To explain in detail, in the past, after "foundation work" and "erecting work" were performed, the "second foundation work" and "second erection work" were performed again by the foundation and erection workers. Although it was necessary, the above-mentioned construction method eliminates the need for the "second foundation work" and "second erection work," making it possible to significantly simplify the construction procedure.

<Grout formwork>
Next, details of the grout formwork 10 will be explained based on FIGS. 7 to 9A and 9B.
As shown in FIG. 7, the grout formwork 10 is formed as a frame-shaped steel plate for preventing the grout material 6 from flowing out, and includes a first member 11 connected to surround the entire circumference of the base plate 4. , the second member 12.
The first member 11 and the second member 12 have the same shape and are provided as a pair so as to sandwich the base plate 4 therebetween.
In addition, the grout formwork 10 may be formed from a material such as an acrylic plate in addition to a steel plate (stainless steel plate).

The first member 11 is made of a substantially U-shaped steel plate, and has a first side wall portion 11a arranged to face the base plate 4, and a first side wall portion 11a that is bent from both longitudinal ends of the first side wall portion 11a. 4, a pair of second side walls 11b extending to sandwich the first side wall 11a, a first bottom wall 11c protruding outward from the lower end of the first side wall 11a and supported by the foundation 3; It has a pair of second bottom wall parts 11d that respectively protrude outward from the lower ends of the side wall parts 11b and are supported by the foundation 3.
Similarly, the second member 12 has a first side wall portion 12a, a pair of second side wall portions 12b, a first bottom wall portion 12c, and a pair of second bottom wall portions 12d.

As shown in FIG. 8, a mounting claw 13 is formed at the extending end of the second side wall portion 11b of the first member 11 by cutting out a portion of the extending end.
Further, the inner surface of the extending end portion of the second side wall portion 11b is provided at the same height as the mounting claw 13, and is located slightly toward the center of the mounting claw 13. A mounting hole 14 is formed by partially cutting and raising it.
Similarly, attachment claws 13 and attachment holes 14 are formed in the second member 12.

In the above configuration, the attachment claw 13 of the first member 11 is detachably attached to the attachment hole 14 of the second member 12. When the first member 11 and the second member 12 are connected, the first member 11 is arranged to partially overlap the second member 12.
Specifically, the second side wall portion 11b and the second bottom wall portion 11d of the first member 11 are arranged to partially overlap with the second side wall portion 12b and the second bottom wall portion 12d of the second member 12, respectively. become.
Note that when the first member 11 (attachment claw 13) and the second member 12 (attachment hole 14) are connected, as shown in FIG. The hole 14 is provided without any particular function.

Further, as shown in FIGS. 9A and 9B, folding wall portions 15 that can be folded back against the first bottom wall portion 11c are formed at both longitudinal ends of the first bottom wall portion 11c of the first member 11. ing.
The folded wall portion 15 is a substantially rectangular piece of steel plate, and is formed to protrude outward in the width direction from the first bottom wall portion 11c.
Note that a folded wall portion 15 is also formed on the second member 12 in the same manner.

By folding back the folded wall portion 15, a corner portion 15a is formed to connect the first bottom wall portion 11c and the second bottom wall portion 11d.
Specifically, one piece 15b of the folded back wall portion 15 is arranged to overlap the second bottom wall portion 11d.
With the above configuration, when a frame (grout formwork 10) is formed by the first member 11 and the second member 12, corner portions 15a are formed at all four corners of the bottom wall of the grout formwork 10. Become.

Further, as shown in FIG. 7, a sealing material 16 for preventing leakage of the grout material 6 is attached to the inner surface of the first member 11 (second member 12). A second sealing material 17 is also attached to the bottom surface of the second member 12).
The sealing material 16 is arranged so as to come into contact with the outer surface of the base plate 4 , and the second sealing material 17 is arranged so as to come into contact with the upper surface of the foundation 3 .
These sealing materials 16 and 17 are foamed sealing materials (water-stopping materials) made of Eptsealer, and are arranged so as to surround the base plate 4, respectively.
Note that the sealing materials 16 and 17 are not limited to EPT sealer, and may be changed to a known grout water stop material.

The sealing material 16 is attached to an upper portion of the inner surface of the first side wall portion 11a (12a), and includes a first extending portion 16a extending along the longitudinal direction of the first side wall portion 11a, and a pair of second extending portions 16a. It has a pair of second extending parts 16b attached to the upper part of the inner surface of the side wall part 11b (12b) and extending along the longitudinal direction of the second side wall part 11b.
The first extending portion 16a and the pair of second extending portions 16b are not continuous with each other on the inner surface of the first member 11 (second member 12), and are spaced apart from each other.
That is, the sealing material 16 is arranged so as to avoid the corner 10a when the frame (grout formwork 10) is formed by the first member 11 and the second member 12.

With the above configuration, it is possible to visually confirm from above whether or not the corner portion 10a, which is the most difficult portion to enter in the grout formwork 10, is filled with the grout material 6. Furthermore, air that tends to accumulate at the corners 10a within the grout formwork 10 can be efficiently released. Therefore, the finish of grouting work is improved.

The second sealing material 17 is attached to the inner part of the bottom surface of the first bottom wall part 11c (12c), and has a pair of first extending parts 17a extending along the longitudinal direction of the first bottom wall part 11c. A pair of second extending portions 17b are attached to the inner side of the bottom surface of the second bottom wall portion 11d (12d) and extend along the longitudinal direction of the second bottom wall portion 11d. .
The first extending portion 17a and the pair of second extending portions 17b are continuous with each other on the bottom surface of the first member 11 (second member 12), and are arranged without any interval.
That is, the second sealing material 17 is arranged so as to cover the entire circumference when the frame (grout formwork 10) is formed by the first member 11 and the second member 12.

With the above configuration, when filling the grout material 6, leakage of the grout material 6 at the bottom surface of the grout formwork 10 can be more easily prevented. Therefore, the finish of grouting can be improved, and the design of the column base 1 can be improved.

<Other embodiments>

In the above embodiment, as shown in FIG. 7, the first member 11 and the second member 12 in the grout formwork 10 have the same shape and are provided as a pair with the base plate 4 sandwiched therebetween. Without limitation, they do not necessarily have to have the same shape, and they do not necessarily have to be provided as a pair.
For example, the configuration may be such that the attachment claw 13 is formed only on one of the first member 11 and the second member 12, and the attachment hole 14 is formed only on the other.

In the above embodiment, as shown in FIG. 8, the attachment claw 13 of the first member 11 is attached to the attachment hole 14 of the second member 12, but this is not particularly limited and can be changed.
In other words, the engagement relationship between the "attachment claw" and the "attachment hole" is not particularly limited, and the "attachment part" provided on the first member 11 is connected to the "attached part" provided on the second member 12. ” as long as it can be detachably attached to it.

In the above embodiment, as shown in FIGS. 7 and 8, the first member 11 and the second member 12 are connected by the attachment claw 13 of the first member 11 being attached to the attachment hole 14 of the second member 12. In some cases, adhesive tape may be further used to make the connection stronger.
For example, it is preferable to wrap an adhesive tape around the entire outer surface of the grout formwork 10 for reinforcement.
Further, an adhesive tape may be further used to firmly fix the grout formwork 10 to the foundation 3. For example, it is preferable to connect the entire circumference of the bottom wall of the grout formwork 10 to the upper surface of the foundation 3 with an adhesive tape for reinforcement.

In the above embodiment, as shown in FIGS. 2A and 2B, one injection hole 4a and one ventilation hole 4b are formed on the upper surface of the base plate 4, and correspond to the connecting portion of the first member 11 and the second member 12. However, this is not particularly limited and can be changed.
For example, a pair of injection holes 4a and a pair of ventilation holes 4b may be formed between the four corners of the upper surface of the base plate 4, respectively.
In that case, since the injection hole 4a or the ventilation hole 4b is arranged at a position corresponding to the connecting portion between the first member 11 and the second member 12, extra air pressure is applied to the connecting portion when grouting material is injected. There is a risk that it will be added to. If this happens, the connecting portion of the grout formwork 10 will become trapped (protrude outward), so it is preferable to wrap adhesive tape around it to reinforce it.
More preferably, as shown in FIGS. 2A and 2B, one injection hole 4a and one ventilation hole 4b are arranged avoiding the positions corresponding to the connecting portions of the first member 11 and the second member 12. .

In the above embodiment, the grout formwork and column base according to the present invention have been mainly described.
However, the embodiments described above are merely examples for facilitating understanding of the present invention, and do not limit the present invention. The present invention may be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof.

1 Column base 1A Extruded corner column base 1B Intermediate column base 2 Column 3 Foundation (column base foundation)
4 Base plate 4a Injection hole 4b Ventilation hole 5 Anchor bolt 6 Grout material 10 Grout formwork 10a Corner 11 First member
11a, 12a First side wall portion 11b, 12b Second side wall portion 11c, 12c First bottom wall portion 11d, 12d Second bottom wall portion 12 Second member 13 Attachment claw (attachment portion)
14 Mounting hole (attached part)
15 folded wall part 15a corner part 15b piece 16 sealing material 16a first extension part 16b second extension part 17 second sealing material 17a first extension part 17b second extension part 20 covering material 30 column base cover member 31 Cover side wall portion 32 Cover top wall portion 33 Cover inclined wall portion 40 Coating agent B Building B1 Fabric foundation B2 External wall panel B3 Ventilation parting

Claims (6)

A grout formwork used when filling a gap between a base plate and a foundation with grout in a column base of a building to prevent the grout from flowing out,
A first member and a second member are provided to face each other around the base plate and are connected to surround the base plate,
In a direction in which the first member and the second member face each other, an attaching portion provided on the first member is removably attached to an attached portion provided on the second member,
When the first member and the second member are connected, the first member is arranged to partially overlap the second member ,
The first member and the second member are connected to form a frame,
A sealing material for preventing leakage of the grout material is attached to the inner surface of each of the first member and the second member,
The grout formwork, wherein the sealing material is arranged to surround the base plate and avoid corners when a frame is formed by the first member and the second member. A grout formwork used when filling a gap between a base plate and a foundation with grout in a column base of a building to prevent the grout from flowing out,
A first member and a second member are provided to face each other around the base plate and are connected to surround the base plate,
In the opposing direction in which the first member and the second member face each other, an attachment portion provided on the first member is removably attached to an attached portion provided on the second member,
When the first member and the second member are connected, the first member is arranged to partially overlap the second member ,
The first member and the second member are
a first side wall portion disposed to face the base plate;
a pair of second side walls bent from both longitudinal ends of the first side wall and extending to sandwich the base plate;
a first bottom wall projecting outward from a lower end of the first side wall and supported by the foundation;
a pair of second bottom wall portions that respectively protrude outward from lower end portions of the pair of second side wall portions and are supported by the foundation;
The second side wall portion of the first member is connected to the second side wall portion of the second member so that they partially overlap in a direction that intersects the opposing direction, and
A grout formwork characterized in that the second bottom wall portion of the first member is connected to the second bottom wall portion of the second member by partially overlapping with the second bottom wall portion of the second member in the vertical direction . A folding wall part that can be folded back with respect to the first bottom wall part is formed at a longitudinal end of the first bottom wall part,
When the folded wall portion is folded back, a corner portion is formed to connect the first bottom wall portion and the second bottom wall portion,
The grout formwork according to claim 2 , wherein the folded back wall portion is disposed so as to partially overlap the second bottom wall portion. The first member and the second member are
provided as a pair and connected so as to surround the entire periphery of the base plate,
The grout formwork according to any one of claims 1 to 3 , each comprising the attachment part and the attached part that can be attached to the attachment part. The first member and the second member are connected to form a frame,
A second sealing material for preventing leakage of the grout material is attached to the bottom surface of each of the first member and the second member,
The grout formwork according to any one of claims 1 to 4 , wherein the second sealing material is arranged around the entire circumference of the base plate. The grout formwork according to any one of claims 1 to 5 ,
pillars that support the building;
the foundation supporting the pillar;
the base plate attached to the lower end of the pillar and connected to the foundation;
A column comprising a column base cover member made of a porous material, which is attached to the foundation and is provided to cover the lower end of the column, the base plate, and the grout formwork. leg.

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