JP2023007698A - Partition tool, and manufacturing method of foundation of building - Google Patents

Abstract

To provide a partition tool which can easily carry out necessary treatment to a top face of ready mixed concrete at a lower stage side of a foundation while suppressing splashing of ready mixed concrete generated on a lower stage face of a step when forming a step.SOLUTION: A partition tool attached to a formwork of a foundation of a building comprises: a partition member 10 having attachment portions 11a, 11b attached to upper ends 81 of facing formworks, and a flat plate-like partition portion 12 which extends downward from the attachment portions 11a, 11b, whose main face spreads in a direction perpendicular to inner faces of the formwork, and which partitions an upper part of an inside space of the facing formworks; and a flat plate-like suppressing member 20 having a main face parallel to the main face of the partition portion 12. The suppressing member 20 is disposed in the partition portion 12 so as to protrude below a lower end of the partition portion 12.SELECTED DRAWING: Figure 2

Description

The present invention relates to a partition attached to a building foundation formwork and to a method for manufacturing a building foundation.

Generally, the foundation of a building such as a house is formed by pouring ready-mixed concrete into a steel formwork. In this process, a step can be formed in the foundation of the building by attaching a partition plate to the formwork and using the partition plate to dam the ready-mixed concrete.

In Patent Document 1, the main surface extends downward from the upper end of the opposing formwork and spreads in a direction perpendicular to the inner surface of the formwork, and the flat plate shape that partitions the upper part of the internal space of the opposite formwork. and a flat plate-shaped folding plate extending horizontally from the bottom of the vertical plate in the longitudinal direction of the formwork with a predetermined width. In the partitioning device of Patent Document 1, when the fresh concrete is poured into the formwork, the folding plate prevents the fresh concrete from blowing up on the lower side of the foundation.

Japanese Patent Application Laid-Open No. 2002-097790

In the above partitioning device, when performing necessary processing on the upper surface of the ready-mixed concrete on the lower side of the foundation, the necessary processing is performed on the upper surface because part of the upper surface is covered with the folding plate portion. There is a problem of difficulty.

The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress the blow-up of ready-mixed concrete generated on the lower surface of the step when forming the step, and to prevent the upper surface of the ready-mixed concrete on the lower side of the foundation from being blown up. To provide a partition tool that facilitates necessary processing by

(1) The partition according to the present invention is a partition that is attached to the formwork of the foundation of a building. The partition has an attachment portion attached to the upper end portion of the opposing formwork, and a main surface extending downward from the attachment portion to extend in a direction orthogonal to the inner surface of the formwork. a partition member having a flat plate-shaped partition section that partitions an upper portion of the internal space of the body; and a flat plate-shaped suppressing member having a main surface parallel to the main surface of the partition section. The suppressing member is arranged in the partition so as to protrude downward from the lower end of the partition.

According to the present invention, since the upper part of the internal space of the opposing formwork is partitioned by the partition part of the partition member, it is possible to form steps having different positions of the upper ends of the foundations in the upper part of the internal space of the formwork. Since the suppressing member protrudes downward from the lower end of the partition, when the ready-mixed concrete poured into the internal space of the formwork is vibrated, for example, by a vibrator or the like from the higher side of the foundation, Ready-mixed concrete is suppressed from flowing to the low side of the step. As a result, ready-mixed concrete is suppressed from blowing up on the lower side of the step. In addition, when the suppressing member protrudes downward from the lower end of the partition, the upper surface of the lower step is exposed, so that the upper surface of the foundation can be processed as necessary without operating the suppressing member. Easy to do.

(2) The suppressing portion may have a slit that opens at the lower end and extends in the vertical direction.

According to this configuration, the suppressing member can be arranged such that the reinforcing bar located in the internal space of the formwork is inserted through the slit. When the suppressing part is pulled out of the fresh concrete, the fresh concrete that has entered the slit flows out from the slit, so that the gaps generated by pulling out the suppressing member from the fresh concrete are easily closed. For this reason, edge cutting of ready-mixed concrete is suppressed.

(3) The partition includes a first projecting portion that projects from the main surface of the partition portion toward the suppressing member, and a second projecting portion that projects from the main surface of the suppressing member toward the partitioning portion. and a locating member having a. The second projecting portion is in contact with the first projecting portion in the direction of gravity at a position where the suppressing member projects downward from the lower end of the partition portion.

According to this configuration, the first projecting portion is in contact with the second projecting portion in the direction of gravity at the position where the suppressing member protrudes downward from the lower end of the partition. In addition, the entire restraining member is restricted from moving below the partition. Therefore, it becomes easy to dispose the suppressing member in the partition so as to protrude downward from the lower end of the partition.

(4) A method for manufacturing a building foundation according to the present invention is a method for manufacturing a building foundation using a formwork and the partition according to any one of (1) to (3) above. A method for manufacturing a building foundation includes a mounting step of mounting a partition member to the formwork via a mounting portion; a placing step of placing concrete up to a predetermined height in one of the upper parts of the internal space of the formwork partitioned by the partition; and a vibrating step of vibrating the concrete placed to the predetermined height in the placing step after the placing step.

According to the present invention, in the mounting step, since the upper portions of the internal spaces of the opposing formwork are partitioned by the partitioning portion of the partition member, it is possible to form steps having different positions of the upper ends of the foundations in the upper portion of the internal space of the formwork. . Since the suppressing member placed in the partition in the placing step protrudes below the lower end of the partition, when the concrete poured to a predetermined height in the placing step is vibrated in the vibrating step, the step The flow of ready-mixed concrete from the high side of the partition to the low side of the step through the bottom of the partition is suppressed. As a result, ready-mixed concrete is suppressed from blowing up on the lower side of the step. In addition, in a state in which the suppressing member protrudes downward from the lower end of the partition, the upper surface of the lower step side is exposed. It is easy to perform necessary processing.

(5) The method for manufacturing the building foundation includes, after the arranging step, a pulling step of pulling out the suppressing member from the concrete; a curing step of waiting for the concrete placed in the placing step to harden; and after the curing step, a removing step of removing the partition member from the formwork. Prepare more.

According to this configuration, after the step of pulling out the suppressing member from the concrete, the upper surface of the concrete on the lower side of the upper end of the foundation is treated. A filling operation can follow the processing steps. Therefore, the work of filling the gap can be easily performed, and the upper surface on the side with the lower step can be finished more beautifully.

According to the present invention, necessary processing can be easily performed on the upper surface of the ready-mixed concrete on the lower side of the foundation while suppressing the blow-up of the ready-mixed concrete generated on the lower surface of the step when the step is formed.

1A and 1B are perspective views showing a step and formwork. FIG. 1A shows a step 1 to be formed, and FIG. 1B shows a formwork 80 of a building foundation. FIG. 2 is a diagram showing a state in which the partition according to the embodiment is attached to the formwork 80. As shown in FIG. 3A and 3B are perspective views of the partition according to the embodiment, in which FIG. 3A shows the partition member 10 and FIG. FIG. 4 is a flow chart of a method for manufacturing a building foundation according to an embodiment. FIGS. 5A and 5B are schematic diagrams for explaining the effect of the embodiment, FIG. 5A shows how blow-up is suppressed, and FIG. FIG. 5C shows a state in which the voids are filled. FIG. 6 shows how the ready-mixed concrete 90 blows up 92 . 7A and 7B are perspective views of the partition according to the modification, FIG. 7A shows the partition member 10 provided with the first projecting portion 30a of the positioning member 30, and FIG. shows a suppressing member 20 provided with a second projecting portion 30b. FIG. 8 is a schematic diagram showing how the partition according to the modification is used.

Hereinafter, a method for manufacturing a partition and a building foundation according to an embodiment of the present invention will be described with reference to the drawings. The embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without changing the gist of the present invention.

[Building foundation to be manufactured]
A case of manufacturing a building foundation having a step 1 shown in FIG. 1(A) will be described below. The step 1 has a lower step surface 2 , an upper step surface 3 and a vertical surface 4 . Hereinafter, the height direction of the vertical surface 4 is referred to as the height direction 5 , the width direction of the vertical surface 4 is referred to as the width direction 6 , and the direction perpendicular to the height direction 5 and the width direction 6 is referred to as the length direction 7 .

The foundation of a building is manufactured by pouring ready-mixed concrete into the inner space of the steel formwork 80 shown in FIG. 1(B). The molds 80 face each other with a predetermined gap. Opposing forms 80 each have a top edge 81 to which a divider is attached. Any construction method for the foundation of the building may be used as long as it is a concrete construction using a steel formwork 80 . The construction method of the building foundation may be, for example, a continuous foundation or a raft foundation.

[Composition of the partition]
As shown in FIGS. 2 and 3, the partition according to this embodiment includes a partition member 10 and a suppressing member 20. As shown in FIGS. The suppressing member 20 is a member different from the partition member 10 . The partition member 10 and the suppressing member 20 are made of steel. The partition member 10 has attachment portions 11a and 11b, a partition portion 12, and side portions 13a and 13b.

The partition member 10 is attached to the formwork 80 when manufacturing the building foundation having the step 1 . The partition member 10 is attached to the mold 80 along the vertical surface 4 of the step 1 to be formed by the partition 12 . The height direction, width direction and length direction of the partition are height direction 5, width direction 6 and length direction 7, respectively.

The mounting portions 11a and 11b have a flat plate shape extending in the width direction 6 and the length direction 7. As shown in FIG. The mounting portion 11b has the same shape and dimensions as the mounting portion 11a. The dimension in the length direction 7 of the mounting portions 11a and 11b is longer than the dimension in the length direction 7 of the side portions 13a and 13b. The mounting portions 11a and 11b have mounting through holes 14a and 14b, respectively. Note that the mounting portions 11a and 11b may not have the through holes 14a and 14b.

The partition part 12 has a flat plate shape extending in the height direction 5 and the width direction 6 . The dimension of the partition 12 in the height direction 5 is greater than the height of the step 1 (the dimension of the vertical surface 4 in the height direction 5). The dimension of the partition 12 in the width direction 6 is equal to or slightly smaller than the width of the step 1 (the dimension of the vertical surface 4 in the width direction 6). The partition 12 has a lower end 19 that is one end in the height direction 5 .

The side portions 13 a and 13 b have flat plate shapes extending in the height direction 5 and the length direction 7 . Side portion 13b has the same shape and dimensions as side portion 13a. The dimension of the side portions 13a and 13b in the height direction 5 is equal to or slightly smaller than the dimension of the partition portion 12 in the height direction 5. As shown in FIG. The side portions 13a, 13b can respectively abut against the inner surfaces of the molds 80 facing each other. Incidentally, the side portions 13a and 13b may be omitted.

The attachment portion 11a is orthogonally connected to the side portion 13a at one end extending in the length direction 7 . The attachment portion 11b is orthogonally connected to the side portion 13b at one end extending in the length direction 7 . One end extending in the height direction 5 of the partition part 12 is orthogonally connected to the side surface part 13a, and the other end thereof extending in the height direction 5 is orthogonally connected to the side surface part 13b.

The attachment portions 11a and 11b are attached to the upper end portions 81 of the molds 80 facing each other. In a state where the mounting portions 11a and 11b are mounted on the upper end portion 81, the partition portion 12 extends downward from the mounting portions 11a and 11b so that the main surface spreads in the direction perpendicular to the inner surface of the formwork 80 (the width direction 6). and defines the upper part of the interior space of the molds 80 facing each other.

Attachments 11a, 11b are attached to upper end 81 in any manner. For example, the attachment portions 11a and 11b may be attached to the upper end portion 81 by passing members such as bolts through the through holes 14a and 14b. Alternatively, the attachment portions 11a and 11b may be attached to the upper end portion 81 using a fixing member such as a vise.

The suppressing member 20 is a member arranged on the partition member 10 attached to the formwork 80 . The suppression member 20 has a grip portion 21 and a suppression portion 22 . The grip portion 21 is a portion that is gripped by the operator when arranging the suppressing member 20 on the partition member 10 . The grip portion 21 is formed in a flat plate shape extending in the height direction 5 and the width direction 6 . The dimension of the grip portion 21 in the height direction 5 is larger than the dimension of the partition portion 12 in the height direction 5 . The dimension of the grip portion 21 in the width direction 6 is smaller than the dimension of the partition portion 12 in the width direction 6 . The shape of the grip portion 21 is not particularly limited as long as it is a shape that is easy for the operator to hold. The grip portion 21 may have a cylindrical shape, for example. Moreover, the grip part 21 may be omitted.

The suppressing portion 22 is connected to the lower end of the grip portion 21 . The suppressing portion 22 has a flat plate shape extending in the height direction 5 and the width direction 6 . The suppressing portion 22 has a main surface parallel to the main surface of the partition portion 12 . The dimension in the width direction 6 of the suppressing portion 22 is equal to or slightly smaller than the dimension in the width direction 6 of the opposing mold 80 . The dimension of the suppressing portion 22 in the height direction 5 is smaller than the dimension of the partition portion 12 in the height direction 5 . The suppressing portion 22 has a slit 23 that opens at the lower end and extends in the vertical direction. Two slits 23 are provided at intervals in the width direction 6 . The number and positions of the slits 23 are determined according to the number and positions of reinforcing bars arranged in the concrete. The slit 23 may be omitted.

The partition member 10 and the suppressing member 20 are formed by cutting, bending, and punching a single metal plate.

In the partitioning tool according to this embodiment, as shown in FIG. 2, the partitioning member 10 is attached to the formwork 80 along the vertical surface 4 of the step 1 to be formed by the partitioning portion 12 . The suppressing member 20 is arranged on the partition member 10 in a state where the partition member 10 is attached to the formwork 80 via the attachment portions 11a and 11b. In this state, the suppressing portion 22 protrudes below the lower end 19 of the partition portion 12 .

[Manufacturing method of building foundation]
With reference to FIG. 4, a method for manufacturing a building foundation having a step 1 using the formwork 80 and the partition according to the present embodiment will be described. Before carrying out the manufacturing method shown in FIG. 4, a formwork 80 is placed at the base of the building to be manufactured.

In the manufacturing method shown in FIG. 4, first, an attachment step of attaching the partition member 10 according to the present embodiment to the mold 80 is performed (S11). In S11, the attachment portions 11a and 11b are attached to the upper end portions 81 of the molds 80 facing each other. At this time, the partition 12 is arranged along the vertical surface 4 of the step 1 to be formed.

Next, after placing concrete up to the height of the partition 12, a placing step of placing concrete to a predetermined height on one side of the partition 12 is performed (S12). In S<b>12 , ready-mixed concrete 90 is first poured into the internal space of the formwork 80 up to the height of the lower end 19 of the partition 12 . The height of the lower end 19 of the partition 12 is the height of the lower surface 2 of the step 1 to be formed. Next, ready-mixed concrete 90 is poured into one side of the partition 12 up to a predetermined height. At this time, concrete is placed in one of the upper portions of the internal space of the formwork 80 partitioned by the partition portion 12 . The predetermined height is the height of the upper step surface 3 of the step 1 to be formed.

Next, an arrangement step of arranging the suppressing member 20 on the partition member 10 is performed (S13). In S<b>13 , the operator grips the grip portion 21 and slides the suppressing portion 22 downward with respect to the partitioning portion 12 while the main surface of the suppressing portion 22 is in parallel contact with the main surface of the partitioning portion 12 . Let At this time, as shown in FIG. 5(A), the suppressing portion 22 is moved to a position where it protrudes below the lower end 19 of the partition portion 12, and the suppressing portion 22 is buried in the ready-mixed concrete 90. Then, as shown in FIG. Thereby, the suppressing portion 22 is arranged in the partition portion 12 so as to protrude downward from the lower end 19 of the partition portion 12 . At this time, if reinforcing bars are present in the internal space of the formwork 80 , the restraining portions 22 are arranged so that the reinforcing bars pass through the slits 23 .

After that, as shown in FIG. 5A, a vibrating step is performed (S14) in which a vibrator or the like is used to vibrate the ready-mixed concrete 90 poured in the placing step (S12). Due to the vibration, voids and the like in the concrete placed in the formwork 80 disappear or are reduced, and defects in the concrete are less likely to occur in the foundation.

Next, a pull-out step is performed to pull out the suppressing portion 22 from the ready-mixed concrete 90 (S15). In S15, while the partition member 10 is attached to the formwork 80, the restraining member 20 is repeatedly moved up and down as indicated by the arrows in FIG. Since the suppression member 20 is a member different from the partition member 10, S15 can be executed. When S15 is executed, as shown in FIG. 5(B), the suppressing portion 22 is pulled out from the ready-mixed concrete 90, thereby creating a gap 31. As shown in FIG.

Next, a processing step for performing necessary processing on the lower surface 2 of the step 1 is performed (S16). In S16, for example, a process of aligning the upper surface of the concrete with respect to the lower surface 2, a process of applying a leveling agent, and the like are performed. Incidentally, the withdrawal step (S15) may be performed after the processing step (S16). Next, a filling step is performed to fill the gap 31 generated in S15 (S17). In S17, as shown in FIG. 5(C), the gap 31 is filled and the lower surface 2 is flushed. Next, necessary processing is performed on the upper surface 3 of the step 1 (S18). In S18, for example, the same processing as in S16 is performed on the upper surface 3. FIG.

Next, a hardening step is performed (S19) to wait until the concrete placed in the placing step (S12) hardens. Next, a removal step is performed to remove the partition member 10 from the formwork 80 (S20). After performing the manufacturing method shown in FIG. 4, the installed formwork 80 is removed.

[Effects of Embodiment]
According to the method of manufacturing a partition and a building foundation according to the present embodiment, the upper part of the internal space of the opposing formwork 80 is partitioned by the partition part 12 of the partition member 10 . Therefore, it is possible to form the steps 1 having different positions of the upper ends of the foundations in the upper part of the internal space of the formwork 80 . The lower surface 2 of the step 1 is the lower position of the upper end of the foundation. The higher position of the upper end of the base becomes the upper step surface 3 of the step 1. - 特許庁

Further, when the conventional partition plate 70 shown in FIG. 6 is used, when the vibrator 91 is used to vibrate the ready-mixed concrete 90 poured into the formwork 80 in the placing step (S12), it still hardens sufficiently. Fresh concrete 90 that has not yet been fluidized. Therefore, the ready-mixed concrete 90 enters from the upper surface 3 side to the lower surface 2 side via the lower side of the lower end of the partition plate 70, and the ready-mixed concrete 90 blows up 92 on the lower surface 2 of the step 1. do.

When using the partition according to this embodiment, as shown in FIG. (S13). Therefore, ready-mixed concrete 90 is prevented from entering from the upper surface 3 side to the lower surface 2 side via the lower side of the lower end 19 of the partition portion 12, and the ready-mixed concrete 90 is prevented from entering the lower surface 2 of the step 1. Blowing up is suppressed.

When the ready-mixed concrete 90 is poured into the internal space of the formwork 80 in this way and vibration is applied to the ready-mixed concrete 90 from the side of the internal space partitioned by the partition part 12 where the upper end of the foundation is located higher by the vibrator 91 or the like. , the suppressing part 22 suppresses the ready-mixed concrete 90 from blowing up on the lower side of the foundation.

In addition, since there is no need to treat the ready-mixed concrete 90 that has blown up, labor can be saved in construction work. In addition, the operator can apply sufficient vibration to the ready-mixed concrete 90 using the vibrator 91 or the like without being conscious of the ready-mixed concrete 90 blowing up 92 . Therefore, ready-mixed concrete 90 can be cast densely, and the quality of concrete after hardening can be improved. In addition, it is also possible to cast ready-mixed concrete having higher fluidity than usual (ready-mixed concrete having such high fluidity that the conventional partition plate 70 cannot form the step 1).

In addition, since the lower surface 2 of the step 1 (the upper surface of the ready-mixed concrete 90 on the lower side of the upper end of the foundation) is exposed when the suppressing portion 22 protrudes downward from the lower end 19 of the partition portion 12, Necessary processing can be easily performed on the lower surface 2 of the step 1 without operating the suppressing part 22 .

Moreover, the partition member 10 is provided with side portions 13a and 13b, and the side portions 13a and 13b can abut against the inner surfaces of the molds 80 facing each other. Therefore, the partition member 10 can be attached to the mold 80 along the correct direction.

The suppressing portion 22 has a slit 23 that opens at the lower end and extends in the vertical direction. For this reason, the suppressing portion 22 can be arranged such that the reinforcing bars located in the internal space of the formwork 80 pass through the slits 23 . When the suppressing part 22 is pulled out from the fresh concrete 90, the fresh concrete 90 entering the slit 23 flows out from the slit 23, so that the gap 31 generated by pulling out the suppressing part 22 from the fresh concrete 90 is easily closed. . Therefore, the ready-mixed concrete 90 is prevented from being cut off.

Further, after the pulling step (S15) of pulling out the suppressing portion 22 from the ready-mixed concrete 90, the upper surface of the lower surface 2 of the step 1 is processed. Therefore, the embedding step (S17) of filling the gap 31 generated by pulling out the suppressing portion 22 from the ready-mixed concrete 90 is performed following the processing step (S16) of performing necessary processing on the lower surface 2 of the step 1. be able to. Therefore, the work of filling the gap 31 can be easily performed, and the lower surface 2 of the step 1 can be finished more beautifully.

In addition, since the suppressing member 20 is moved up and down while the suppressing part 22 is pulled out from the fresh concrete 90 (S15), the fresh concrete 90 adhering to the slit 23 of the suppressing part 22 is easily dropped from the gap 31. Therefore, since the gap 31 is easily filled with the ready-mixed concrete 90 falling from the slit 23, the work of filling the gap 31 is easy.

[Modification]
Various modifications can be made to the partition according to the present embodiment. Differences from the partitioning tool according to the above embodiment will be described below.

The partition according to the modification shown in FIG. 7 further includes a positioning member 30 in addition to the partition member 10 and the suppressing member 20 . The positioning member 30 includes a first protrusion 30a (see FIG. 7A) that protrudes from the main surface of the partition 12 toward the suppressing portion 22, and a second protrusion that protrudes from the main surface of the suppressing portion 22 toward the partition 12. and a portion 30b (see FIG. 7B). The first projecting portion 30 a is arranged at the center in the width direction 6 at the lower end portion of the partition portion 12 . The first projecting portion 30 a extends along the width direction 6 of the partition portion 12 . The dimension in the width direction 6 of the first projecting portion 30 a is smaller than the dimension in the width direction 6 of the partition portion 12 . The second projecting portion 30 b is arranged at the center in the width direction 6 at the upper end portion of the suppressing portion 22 . The second projecting portion 30 b extends along the width direction 6 of the suppressing portion 22 . The dimension in the width direction 6 of the second projecting portion 30 b is smaller than the dimension in the width direction 6 of the suppressing portion 22 . The dimension of the first projecting portion in the width direction 6 may be substantially the same as the dimension of the partition portion 12 in the width direction 6 . Also, the dimension in the width direction 6 of the second projecting portion may be substantially the same as the dimension in the width direction 6 of the suppressing portion 22 .

In the partitioning tool according to the modification shown in FIG. 7, in the arrangement step (S13) of arranging the suppressing member 20 on the partitioning member 10, the operator holds the gripping portion 21 and moves the second protruding portion 30b to the partitioning portion. The suppressing portion 22 is slid downward with respect to the partition portion 12 while being in contact with the main surface of the partition portion 12 . At this time, as shown in FIG. 8, the suppressing portion 22 is slid with respect to the partition portion 12 to a position where the second projecting portion 30b contacts the first projecting portion 30a in the gravitational direction. As a result, the suppressing portion 22 is buried in the ready-mixed concrete 90 poured in the placing step (S12) and arranged in the partition portion 12 so as to protrude below the lower end 19 of the partition portion 12. As shown in FIG. In addition, in the partitioning tool of the modified example, the placing step (S13) of placing the suppressing member 20 on the partitioning member 10 may be performed before the placing step (S12). In this case, the worker performs the placing step (S12) while supporting the suppressing member 20 so that the suppressing member 20 does not tilt.

The modified partition further includes a positioning member 30 in addition to the partition member 10 and the suppressing member 20 . Therefore, when the suppressing portion 22 is slid downward with respect to the partitioning portion 12, the second protruding portion 30b contacts the first protruding portion 30a in the direction of gravity. It is regulated to move to. Therefore, it is easy to dispose the suppressing portion 22 in the partition portion 12 so as to protrude downward from the lower end 19 of the partition portion 12 .

REFERENCE SIGNS LIST 10: Partition member 11a, 11b: Mounting portion 12: Partition portion 19: Lower end 20: Control Member 23 Slit 30 Positioning member 30a First protrusion 30b Second protrusion 80・・・・Formwork 81 ・・・・・・・・Upper end

Claims (5)

A partition to be attached to the formwork of a building foundation,
A mounting portion attached to the upper end portion of the opposing formwork, and a main surface extending downward from the mounting portion and extending in a direction orthogonal to the inner surface of the formwork, and an upper portion of the inner space of the opposing formwork. A partition member having a flat plate-shaped partition that partitions the
a flat plate-shaped suppressing member having a main surface parallel to the main surface of the partition,
The suppressing member is a partitioning tool arranged in the partitioning portion so as to protrude downward from a lower end of the partitioning portion. 2. The partitioning tool according to claim 1, wherein the restraining member has a slit that opens at the lower end and extends along the vertical direction. A positioning member further comprising: a first projecting portion projecting from the main surface of the partition portion toward the suppressing member; and a second projecting portion projecting from the main surface of the suppressing member toward the partitioning portion. prepared,
The partitioning tool according to claim 1 or 2, wherein the second projecting portion is in contact with the first projecting portion in the direction of gravity at a position where the suppressing portion projects downward from the lower end of the partitioning member. A method for manufacturing a building foundation using a formwork and the partition according to any one of claims 1 to 3,
an attachment step of attaching the partition member to the formwork via the attachment portion;
After pouring concrete into the internal space of the formwork up to the height of the partition of the partition member, concrete is poured to a predetermined height in one of the upper parts of the internal space of the formwork partitioned by the partition. a casting step;
an arrangement step of arranging a suppressing member in the partition so as to protrude downward from the lower end of the partition;
and a vibrating step of vibrating the concrete placed to the predetermined height in the placing step after the placing step. a pulling step of pulling the restraining member out of the concrete after the placing step;
After the pulling step, a processing step of processing the upper surface of the concrete on the lower side of the upper end of the foundation;
a hardening step of waiting until the concrete placed in the placing step hardens;
5. The method of manufacturing a building foundation according to claim 4, further comprising a removing step of removing said partition member from said formwork after said curing step.

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