JP2021123866A - Grout form and column base - Google Patents

Abstract

To provide a grout form which has achieved improvement in workability and to provide a column base.SOLUTION: A column base 1 includes: a column 2 for supporting a building; a column base foundation 3 for supporting the column 2; a base plate 4 mounted on the column 2, and connected to the foundation 3; a grout form 10 used when filling a grout material 6 in a gap of the base 3 and the base plate 4; and a column base cover member mounted on the foundation 3, and provided so as to cover a lower end part of the column 2, the base plate 4, and the grout form 10. The grout form 10 has a first member 11 and a second member 12 connected so as to surround the base plate 4. In the direction in which the first member 11 and the second member 12 are opposing to each other, a mounting claw provided in the first member 11 is detachably mounted with respect to a mounting hole provided at the second member 12, and the first member 11 is connected to the second member 12 with one part being overlapped.SELECTED DRAWING: Figure 2A

Description

The present invention relates to a grout formwork and a column base, and more particularly to a column base having a grout formwork and a grout formwork used when filling a gap between a base plate and a foundation with a grout material in a column base of a building.

There is an exposed column base as a type of column base that supports the superstructure of the building.
The exposed column base includes a column that supports the superstructure, a foundation that supports the column (column base foundation), a base plate that is attached to the lower end of the column and is connected to the foundation by anchor bolts, and a base plate and foundation. It is mainly composed of a grout mold used for filling the gaps between the two.
In general, the periphery of the base plate, anchor bolts and grout formwork is embedded with concrete or mortar (see, for example, Patent Document 1).
The grout formwork may be embedded in the concrete (mortar) or removed before being embedded in the concrete.

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

By the way, when filling the gap between the base plate and the foundation with the grout material, various grout formwork has been proposed in order to easily prevent the outflow of the grout material (see, for example, Patent Documents 2 and 3).
Under such circumstances, there has been a demand for a grout formwork that secures the design of the column base by making it easier to prevent the outflow of the grout material and improves the workability by facilitating the assembly.
In particular, there has been a demand for a grout formwork that can be easily assembled even when constructing a building in a narrow area and does not require the use of special tools.

In addition, to explain the construction procedure of the conventional exposed column base, first, after performing the "foundation work" to construct the column base foundation and cloth foundation, the columns and base plate are installed on the column base foundation, and the gap between the base plate and the foundation is explained. "Construction work (including ground work)" is performed by injecting ground material into the foundation. Then, after carrying out the "second foundation work" in which the columns are covered with a fireproof coating material and the base plate and anchor bolts are buried with concrete or mortar, the "second construction work" is carried out to assemble the outer wall of the first floor and the like. Then, after performing "exterior work" to install a ventilation parting line on the main body of the column base, "plastering work" to apply mortar, undercoat material, and topcoat material is performed (mainly 6 steps).
Then, after performing the "foundation work" and "construction work", it is necessary for the foundation work worker to carry out the "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 becomes complicated and the arrangements of each contractor become complicated, leading to cost increase and delay in construction due to waiting for the contractor.
Therefore, there has been a demand for a column base that can 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 formwork and a column base having improved design of the column base.
Another object of the present invention is to provide a grout formwork and a column base that simplify the construction procedure.

According to the grout formwork of the present invention, the problem is a grout formwork used when filling the gap between the base plate and the foundation in the column base of a building and preventing the outflow of the grout material. The first member and the second member are provided so as to face each other around the base plate and are connected so as to surround the base plate, and the first member and the second member are opposed to each other. The attachment portion provided on the first member is detachably attached to the attachment portion provided on the second member, and when the first member and the second member are connected, the first member Is arranged so as to partially overlap with the second member.
With the above configuration, workability can be improved, and a grout formwork with improved design of the column base can be realized.
More specifically, since the attachment portion of the first member is detachably attached to the attachment portion of the second member in the direction in which the first member and the second member face each other, the grout formwork can be easily assembled. It can be done and the workability can be improved.
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 is partially overlapped and connected to the second member, it is easy to prevent the outflow of the grout material. It is possible to improve the design of the column base.

At this time, the first member and the second member are provided so as to form a pair, are connected so as to surround the entire circumference of the base plate, and are attached to the attachment portion and the attachment portion that can be attached to the attachment portion, respectively. And, it is good to have.
As described above, the first member and the second member are provided in a pair and are connected so as to surround the entire circumference of the base plate, so that the cost (material cost) of the component parts of the grout formwork is suppressed. be able to.
Further, as described above, since the first member and the second member are provided so as to be a pair and each has a mounting portion and a mounted portion, for example, the first member and the second member have the same shape. By using the member made of the component, the cost of the component can be further suppressed, and the management of the component becomes easy. In addition, the grout formwork can be assembled more easily.

At this time, the first member and the second member are connected so as to form a frame.
A sealing material for preventing leakage of the grout material is attached to the inner side surface of each of the first member and the second member, and the sealing material is arranged so as to surround the base plate and the first member. It is preferable that the frame is arranged so as to avoid the corners when the frame is formed by the first member and the second member.
As described above, the sealing material is attached to the inner side surface of each of the first member and the second member, and the sealing material is arranged so as to surround the base plate. Therefore, when the grout material is filled, the grout material is used. It becomes easier to prevent leakage.
Further, since the sealing material is arranged so as to avoid the corners when the frame is formed by the first member and the second member, the grout material is filled in the corners which are the most difficult parts to enter in the grout formwork. It is possible to visually confirm whether or not it is done from above (it becomes easier to visually confirm).
Further, when the grout material is filled, the air that tends to accumulate at the corners in the grout form can be efficiently released. Therefore, the finish of grout construction is improved.

At this time, the first member and the second member are bent from both ends of the first side wall portion arranged so as to face the base plate and both ends of the first side wall portion in the length direction, respectively, to form the base plate. A pair of second side wall portions extending so as to sandwich the first side wall portion, a first bottom wall portion protruding outward from the lower end portion of the first side wall portion and supported by the foundation, and the pair of second side wall portions. Each has a pair of second bottom wall portions that protrude outward from the lower end portion and are supported by the foundation, and the second side wall portion and the second bottom wall portion of the first member are , It is preferable that the second side wall portion and the second bottom wall portion of the second member are partially overlapped and connected to each other.
As described above, since the second side wall portion and the second bottom wall portion of the first member are partially overlapped and connected to the second side wall portion and the second bottom wall portion of the second member, respectively, the grout material The outflow can be further prevented, and the design of the column base can be improved.

At this time, a folded wall portion that can be folded back with respect to the first bottom wall portion is formed at the end portion of the first bottom wall portion in the length direction, and the folded wall portion is folded back to form the first bottom. It is preferable that the corner portion is formed so as to connect the wall portion and the second bottom wall portion, and the folded back wall portion is arranged so as to partially overlap the second bottom wall portion.
As described above, since the corner portion is formed so as to connect the first bottom wall portion and the second bottom wall portion by folding back the folded wall portion, when the grout material is filled in the grout formwork. , The portion (corner portion) between the first bottom wall portion and the second bottom wall portion, which is a portion where the grout material leaks relatively easily, can be reinforced by the folded wall portion. As a result, it becomes easier to prevent leakage of the grout material.
Further, since the folded-back wall portion is arranged so as to partially overlap the second bottom wall portion, it is possible to further prevent the outflow of the grout material and improve the design of the column base. Can be done.
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 relatively easily manufactured from one steel plate. Therefore, it is possible to reduce the cost in manufacturing the grout formwork.

At this time, the first member and the second member are connected so as to form a frame, and a second member for preventing leakage of the grout material is provided on the bottom surface of each of the first member and the second member. It is preferable that the sealing material is attached and the second sealing material is arranged over the entire circumference so as to surround the base plate.
With the above configuration, it is possible to further prevent leakage of the grout material when filling the grout material, and it is possible to improve the design of the column base.

Further, the subject is the grout formwork, the pillar supporting the building, the foundation supporting the pillar, the base plate attached to the lower end of the pillar and connected to the foundation, and the foundation. It is also solved by a column base provided with a column base cover member made of a porous material, which is attached to the column and is provided so as to cover the lower end portion of the column, the base plate, and the grout formwork.
As described above, by substituting the concrete (mortar) that was conventionally provided to cover the base plate or the like with a column base cover member made of a porous material, the base plate or the like is embedded with concrete (mortar). There is no need to carry out "foundation work" again. The column base cover member can be attached together, for example, at the time of "exterior work" in which a fireproof coating material or a ventilation parting line is installed on the column base body.
Therefore, it is possible to realize a column base that simplifies the construction procedure.

According to the grout formwork and column base of the present invention, workability can be improved.
In addition, it is possible to easily prevent the outflow of the grout material and improve the design of the column base.
In addition, by simplifying the construction procedure, it is possible to suppress an increase in cost and improve the delay in construction due to waiting for each contractor.

It is a perspective view which shows the column base of this embodiment, and is the figure which shows the state which attached the column to the foundation in the protruding corner part of a building. It is a perspective view which shows the column base, and is the figure which shows the state which attached the column to the foundation in the middle part 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 which attached the covering material in the column base of FIG. 2A. It is a figure which shows the state which attached the covering material in the column base of FIG. 2B. It is a figure which shows the state which attached the column base cover member in the column base of FIG. 3A. It is a figure which shows the state which attached the column base cover member in the column base of FIG. 3B. It is a vertical cross-sectional view of the completed column base. It is a process drawing which shows the construction method of a column base. It is an exploded perspective view which shows the grout formwork of this embodiment. It is an enlarged view of the main part of the grout formwork, and is the perspective view which shows the attachment claw and the attachment hole. It is an enlarged view of the main part of the grout formwork, and is the perspective view which shows the folded wall part. It is a perspective view which shows the state which the folded wall part is folded back.

Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1 to 9A and 9B.
In this embodiment, the columns that support the building, the foundation that supports the columns (column base foundation), the base plate that is attached to the lower end of the columns and connected to the foundation, and the gap between the base plate and the foundation are filled with ground material. It is a column base provided with a ground mold used for the above-mentioned construction, and a column base cover member mounted on the foundation and provided so as to cover the lower end of the column, the base plate and the ground mold. The molds are provided so as to face each other around the base plate, have a first member and a second member connected so as to surround the base plate, and have a first member and a second member in a direction in which the first member and the second member face each other. The attachment portion provided on the first member is detachably attached to the attachment portion provided on the second member, and the first member is partially overlapped and connected to the second member. It relates to the invention of "pillar base".

As shown in FIGS. 1A and 1B-5, the column base 1 of the present embodiment is an exposed column base, and is installed in 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 base 1 (column base 3) is provided with a width larger than that of the cloth foundation B1 in the thickness direction, and is formed so that the length in the height direction is lower than that of the cloth foundation B1.

As shown in FIGS. 1A and 1B-5, the column bases 1 are a steel column 2 that supports the superstructure of the building B and a reinforced concrete foundation 3 that supports the column 2 from below (column base 3). ), The base plate 4 attached to the lower end of the pillar 2 and connected to the foundation 3 by the anchor bolt 5, and the grout mold 10 used when filling the gap between the foundation 3 and the base plate 4 with the grout material 6. A covering material 20 that is covered so as to surround the lower end portion of the column 2, and a column base cover that is attached on the foundation 3 and is attached so as to cover the lower end portion of the column 2, the base plate 4, the grout mold 10, and the covering material 20. It is mainly composed of a member 30 and a coating material 40 applied to the outer surface of the column base cover member 30.
The foundation 3 is formed so as to be lower than the upper end portion of the cloth foundation B1. Therefore, a space for installing the base plate 4, the anchor bolt 5, the grout formwork 10, the covering material 20, the column base cover member 30, and the like can be formed on the upper surface of the foundation 3.

The columns 2 and the foundation 3 are each formed in a square cross section, and the columns 2 are connected to steel columns (not shown) that support the superstructure of the building B. It is fixed via an anchor bolt 5.
The base plate 4 is made of a square plate member, and pillars 2 are penetrated and attached to the central portion of the base plate 4, and anchor bolts 5 are penetrated and attached to the four corners of 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 ventilating when injecting the grout material 6 are formed. The injection hole 4a and the ventilation hole 4b are arranged one by one so as to sandwich the pillar 2. More specifically, as shown in FIGS. 2A and 2B, the grout formwork 10 (first member 11 and second member 12) is arranged. ) Are arranged 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. More specifically, the base plate 4 is fastened to the foundation 3 by tightening the nut with the protruding portion of the anchor bolt 5 penetrating the base plate 4.

The grout material 6 is, for example, a fluid non-shrink mortar, which is injected from an injection hole 4a formed in the base plate 4 and filled in a region surrounded by a grout mold 10 to form a foundation. It fills the gap between 3 and the base plate 4.
As shown in FIGS. 2A and 2B, the grout formwork 10 is formed by bending a steel plate, is provided so as to face each other around the base plate 4, and is connected so as to surround the base plate 4. It is mainly composed of the second member 12 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 while being placed on the base plate 4. It is attached to.
The covering material 20 is not limited to rock wool, and may be made of a non-combustible material such as gypsum board or calcium silicate board.

As shown in FIGS. 4A and 4B, the column base cover member 30 is a cover for a column base made of a porous material (for example, Styrofoam), and is concrete that has been performed in the conventional "second foundation work". (Mortar) It is used as a substitute for burial.
The column base cover member 30 has a substantially L-shaped cross section, and a plurality of column base cover members 30 are combined and mounted on the foundation 3.
Specifically, a total of three column base cover members 30 are connected at the protruding corners of the building B, and a total of two column base cover members 30 are connected at the middle portion of the building B.
The column base cover member 30 includes a cover side wall portion 31 that covers the base plate 4, a cover upper 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 upper wall portion 32. , Is mainly composed of.

As shown in FIG. 5, the coating material 40 is a mortar having fluidity applied to the outer surface of the column base cover member 30 in order to ensure the impact resistance of the column base 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 and the outer surface of the foundation 3 are substantially flush with each other so that there is no step. There is.

<Construction method of column base>
Next, the construction method of the column base 1 will be described with reference to FIG.
First, as shown in FIGS. 1A and 1B, the foundation worker starts from the "foundation work" process (step S1) in which the column base foundation 3 and the cloth foundation B1 are constructed.

After that, as shown in FIGS. 1A and 1B-FIGS. 2A and 2B, the worker of the construction worker fixes the pillar 2 and the base plate 4 to the foundation 3 with anchor bolts 5 so as to surround the base plate 4 on the foundation 3. After attaching the grout formwork 10 to the foundation, the “construction work (including grout work)” in which the grout material 6 is injected into the gap between the foundation 3 and the base plate 4 is performed (step S2).
Then, the worker of the construction worker assembles the outer wall panel B2 on the first floor as it is (step S3).

After that, as shown in FIGS. 3A, B-, 4A, B, the exterior carpenter coats the lower end of the pillar 2 with the covering material 20, and then covers the lower end of the pillar 2, the base plate 4, the grout formwork 10, and the covering. The "exterior work" of attaching the column base cover member 30 so as to cover the material 20 is performed (step S4).
After attaching the column base cover member 30, the carpenter may directly attach the ventilation parting line B3 between the cloth foundation B1 and the column base cover member 30 and the outer wall panel B2.

After that, as shown in FIG. 5, a plasterer applies the coating material 40 to the outer surface of the column base cover member 30, and then the column base 3, the column base cover member 30, and the cloth foundation B1 are not shown. "Plastering work" for applying the undercoat material and the topcoat material is performed (step S5), and this work process is completed.
After the applied coating material 40 is dried, an undercoat material (for example, a sealerless collar material) is applied to the outer surfaces of the column base 3, column base cover member 30, and cloth foundation B1 with a roller or the like. After the undercoat material has dried, the topcoat material may be further applied with a roller or the like.

With the above method, it is possible to realize a construction method in which the construction procedure is simplified.
Specifically, as shown in FIG. 6, the construction work of the column base 1 can be completed in the steps of "foundation work", "construction work", "exterior work" and "plastering work". The procedure is simplified and the contractor's arrangements are simpler.
More specifically, in the past, after performing "foundation work" and "construction work", each worker of foundation work and construction work will perform "second foundation work" and "second construction work" again. Where necessary, with the above construction method, the above-mentioned "second foundation work" and "second construction work" become unnecessary, and the construction procedure can be remarkably simplified.

<Grout formwork>
Next, the details of the grout formwork 10 will be described with reference to FIGS. 7-9A and 9B.
As shown in FIG. 7, the grout formwork 10 is formed as a frame-shaped steel plate for preventing the outflow of the grout material 6, and is connected to the first member 11 connected so as to surround the entire circumference of the base plate 4. , Mainly composed of the second member 12.
The first member 11 and the second member 12 have the same shape, and are provided in pairs so as to sandwich the base plate 4.
The grout formwork 10 may be made of a material such as an acrylic plate as well as a steel plate (stainless steel plate).

The first member 11 is made of a substantially U-shaped steel plate, and is bent from both ends of the first side wall portion 11a and the first side wall portion 11a arranged so as to face the base plate 4 in the length direction of the base plate. A pair of second side wall portions 11b extending so as to sandwich 4 and a pair of second side wall portions 11c protruding outward from the lower end portion of the first side wall portion 11a and supported by the foundation 3. It has a pair of second bottom wall portions 11d that project outward from the lower end portions of the side wall portions 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 portion of the second side wall portion 11b of the first member 11 by partially cutting out the extending end portion.
Further, the extending end portion of the second side wall portion 11b is provided at the same height position as the mounting claw 13, and the inner side surface of the extending end portion is one in the portion located slightly closer to the center side than the mounting claw 13. The mounting hole 14 is formed by partially cutting and raising.
Similarly, the second member 12 is also formed with a mounting claw 13 and a mounting hole 14.

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. Then, when the first member 11 and the second member 12 are connected, the first member 11 is arranged so as to partially overlap with the second member 12.
More specifically, the second side wall portion 11b and the second bottom wall portion 11d of the first member 11 are arranged so as to partially overlap with the second side wall portion 12b and the second bottom wall portion 12d of the second member 12, respectively. become.
When the first member 11 (mounting claw 13) and the second member 12 (mounting hole 14) are connected, the mounting claw 13 of the second member 12 and the mounting of the first member are attached as shown in FIG. The holes 14 are provided so as not to function in particular.

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

By folding back the folded wall portion 15, the corner portion 15a is formed so as to connect the first bottom wall portion 11c and the second bottom wall portion 11d.
More specifically, the folded-back wall portion 15 piece 15b is arranged so as to overlap the second bottom wall portion 11d.
According to the above configuration, when the 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 portion 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), and the first member 11 (second member 12) is attached. The second sealing material 17 is also attached to the bottom surface of the two members 12).
The sealing material 16 is arranged so as to abut on the outer surface of the base plate 4, and the second sealing material 17 is arranged so as to abut on the upper surface of the foundation 3.
These sealing materials 16 and 17 are foam sealing materials (water blocking materials) made of an ept sealer, and are arranged so as to surround the base plate 4, respectively.
The sealing materials 16 and 17 can be changed without being limited to the EPT SEALER, and a known grout water blocking material may be used.

The sealing material 16 is attached to an upper portion on the inner surface of the first side wall portion 11a (12a), and has a pair of second extending portions 16a extending along the elongated direction of the first side wall portion 11a. It has a pair of second extending portions 16b that are attached to the upper portion on the inner surface of the side wall portion 11b (12b) and extend along the longitudinal direction of the second side wall portion 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 arranged at intervals.
That is, the sealing material 16 is arranged so as to avoid the corner portion 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 grout material 6 is filled in the corner portion 10a, which is the most difficult portion to enter in the grout form 10. In addition, the air that tends to accumulate in the corner portion 10a in the grout form 10 can be efficiently released. Therefore, the finish of grout construction is improved.

The second sealing material 17 is attached to the inner portion of the bottom surface of the first bottom wall portion 11c (12c), and is paired with the first extending portion 17a extending along the elongated direction of the first bottom wall portion 11c. It has a pair of second extending portions 17b attached to the inner portion of the bottom surface of the second bottom wall portion 11d (12d) and extending 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 gap.
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 the grout material 6 is filled, it is possible to further prevent leakage of the grout material 6 on the bottom surface of the grout form 10. Therefore, the finish of the grout construction 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, in the grout formwork 10, the first member 11 and the second member 12 have the same shape and are provided in pairs so as to sandwich the base plate 4. It is not limited, and may not necessarily have the same shape, or may not be provided as a pair.
For example, the mounting claw 13 may be formed on only one of the first member 11 and the second member 12, and the mounting hole 14 may be formed on only the other one.

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 the attachment claw 13 can be changed without particular limitation.
That is, the engagement relationship between the "mounting claw" and the "mounting hole" does not have to be particularly limited, and the "mounting portion" provided on the first member 11 is the "attached portion" provided on the second member 12. It suffices if it can be attached and detached.

In the above embodiment, as shown in FIGS. 7 and 8, the first member 11 and the second member 12 are connected by attaching the attachment claw 13 of the first member 11 to the attachment hole 14 of the second member 12. Wherever there is, an adhesive tape may be further used for stronger connection.
For example, it is preferable to wrap an adhesive tape around the entire outer surface of the grout formwork 10 to reinforce it.
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 reinforce the upper surface of the foundation 3 by connecting the bottom wall portion of the grout formwork 10 with an adhesive tape over the entire circumference.

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. Although it is arranged avoiding the position where it is used, it can be changed without any particular limitation.
For example, a pair of injection holes 4a and a pair of ventilation holes 4b may be formed between the four corners on the upper surface of the base plate 4.
In that case, since the injection hole 4a or the ventilation hole 4b is arranged at a position corresponding to the connecting portion of the first member 11 and the second member 12, air pressure is excessively applied to the connecting portion when injecting the grout material. There is a risk of joining. In that case, the connecting portion of the grout formwork 10 is confined (protrudes outward), so it is preferable to wrap the adhesive tape to reinforce it.
More preferably, as shown in FIGS. 2A and 2B, the injection holes 4a and the ventilation holes 4b are arranged one by one, 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 the column base according to the present invention have been mainly described.
However, the above-described embodiment is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof.

1 Pillar base 1A Outer corner pillar base 1B Middle pillar base 2 Pillar 3 Foundation (pillar base foundation)
4 Base plate 4a Injection hole 4b Ventilation hole 5 Anchor bolt 6 Grout material 10 Grout formwork 10a Square 11 First member
11a, 12a 1st side wall 11b, 12b 2nd side wall 11c, 12c 1st bottom wall 11d, 12d 2nd bottom wall 12 2nd member 13 Mounting claw (mounting part)
14 Mounting hole (attached part)
15 Folded wall part 15a Square part 15b One 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 Pillar base cover member 31 Cover side wall 32 Cover upper wall 33 Cover inclined wall 40 Coating agent B Building B1 Cloth foundation B2 Outer wall panel B3 Ventilation closeout

Claims (7)

It is a grout formwork used when filling the gap between the base plate and the foundation in the column base of a building and preventing the outflow of the grout material.
A first member and a second member provided around the base plate so as to face each other and connected so as to surround the base plate are provided.
In the direction in which the first member and the second member face each other, the attachment portion provided on the first member is detachably attached to the attachment portion provided on the second member.
A grout formwork characterized in that when the first member and the second member are connected, the first member is arranged so as to partially overlap with the second member. The first member and the second member
It is provided so as to be a pair, and is connected so as to surround the entire circumference of the base plate.
The grout form according to claim 1, wherein each of the attachment portion has the attachment portion and the attachment portion that can be attached to the attachment portion. The first member and the second member are connected so as 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.
Claim 1 is characterized in that the sealing material is arranged so as to surround the base plate and is arranged so as to avoid corners when a frame is formed by the first member and the second member. Or the grout formwork according to 2. The first member and the second member
A first side wall portion arranged so as to face the base plate and
A pair of second side wall portions that are bent from both ends in the length direction of the first side wall portion and extend so as to sandwich the base plate.
A first bottom wall portion that protrudes outward from the lower end portion of the first side wall portion and is supported by the foundation.
Each has a pair of second bottom wall portions that protrude outward from the lower end portions of the pair of second side wall portions and are supported by the foundation.
The second side wall portion and the second bottom wall portion of the first member are partially overlapped and connected to the second side wall portion and the second bottom wall portion of the second member, respectively. The grout form according to any one of claims 1 to 3. At the end of the first bottom wall portion in the length direction, a folded wall portion that can be folded back with respect to the first bottom wall portion is formed.
By folding back the folded wall portion, a corner portion is formed so as to connect the first bottom wall portion and the second bottom wall portion.
The grout form according to claim 4, wherein the folded wall portion is arranged so as to partially overlap the second bottom wall portion. The first member and the second member are connected so as 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 form according to any one of claims 1 to 5, wherein the second sealing material is arranged over the entire circumference so as to surround the base plate. The grout form according to any one of claims 1 to 6 and the grout formwork.
The pillars that support the building and
The foundation that supports the pillar and
With the base plate attached to the lower end of the pillar and connected to the foundation
A column characterized by comprising a column base cover member made of a porous material, which is mounted on the foundation and is provided so as to cover the lower end portion of the column, the base plate, and the grout formwork. leg.

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