Column self-supporting fixture

Abstract

The present invention provides a column base position adjustment jig that can maintain the self-supporting state of the column relative to the foundation and shorten the assembly work time. [Solution] The column self-supporting jig 1 is used to maintain the self-supporting state of column B relative to the column base foundation F1. The column self-supporting jig 1 comprises a foundation beam fixing member 20 fixed to the foundation beam F2, a U-shaped steel plate 10 having contact surfaces that abut against each of the three sides of column B which is made of a square steel pipe, and a connecting support member 30 that connects the foundation beam fixing member 20 and the U-shaped steel plate 10 and supports column B above the column base B1 via the U-shaped steel plate 10.

Description

Technical Field

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[0001] The present invention relates to a column self-supporting fixture, and particularly to a column self-supporting fixture used for maintaining the self-supporting state of a column with respect to a foundation.

Background Art

[0002] Conventionally, a building having a structure in which a plurality of grids are connected is known. A grid is a basic unit of a ramen structure composed of four columns and beams connecting the columns to each other. The construction method using a grid as a basic unit is called grid construction, and it is excellent in reducing the cost and mass-producing a building, and stable supply is possible, so it has been widely spread. Patent Document 1 discloses an industrialized house composed of a connected grid in which a plurality of grids are connected.

[0003] A grid is constructed by erecting a plurality of columns with respect to a foundation and then bridging a beam between the columns. In other words, until a grid is formed by bridging a beam, it is necessary to hold the columns in a self-supporting state with respect to the foundation. Patent Document 2 discloses a technique for maintaining the self-supporting state of columns of a temporary house by a stay wire.

Prior Art Documents

Patent Documents

[0004] [[ID=​​​​​​​​​​​​​​​​​Although the self-supporting state of a column can be maintained by using the stay wires described in Patent Document 2, the following problems existed. When using stay wires, it is necessary to stretch the stay wires in four directions from the top of the column and fix the lower end of each stay wire to the ground. As a result, the time required to stretch the stay wires was long, and improvement in work efficiency was desired. In addition, in order to ensure the stability of the self-supporting column, the lower end of the stay wires had to be fixed at a position away from the column, which presented the problem of requiring a large space.

[0006] The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to provide a column self-supporting support jig that can maintain the self-supporting state of a column relative to the foundation and shorten the assembly work time. Another object of the present invention is to provide a column self-supporting support jig that can maintain the self-supporting state of a column relative to a foundation without requiring a large space. [Means for solving the problem]

[0007] The aforementioned problem is solved by the column self-supporting jig of the present invention, which is used to maintain the self-supporting state of a column relative to a foundation, comprising: a foundation fixing member fixed to the foundation; a U-shaped contact member having contact surfaces that contact each of the three sides of the column made of a square steel pipe; and a connecting support member that connects the foundation fixing member and the U-shaped contact member and supports the column above the base of the column via the U-shaped contact member.

[0008] According to the above configuration, the column self-supporting jig comprises a foundation fixing member fixed to the foundation, a U-shaped contact member that abuts against the three sides of the column, and a connecting support member that connects the foundation fixing member and the U-shaped contact member and supports the column via the U-shaped contact member. Therefore, by connecting the foundation fixing member and the U-shaped contact member, the column can be supported to be self-supporting in at least three directions, eliminating the need to install a separate jig to support the column's self-supporting position in each of the four directions. This ensures that the column remains self-supporting relative to the foundation and reduces the time required for assembling the jig. Furthermore, since the column self-supporting jig is fixed to the foundation, it is possible to maintain the column's self-supporting state relative to the foundation without requiring a large space around the column.

[0009] Furthermore, the connecting support member has an elongated shape and is rotatably connected in a vertical plane to the foundation fixing member and the U-shaped contact member at both ends in the longitudinal direction, and the U-shaped contact member supports the column via the U-shaped contact member at a height corresponding to the distance between the column and the foundation fixing member. According to the above configuration, the column can be held in a self-supporting state via a U-shaped contact member at a height corresponding to the distance between the column and the foundation fixing member. Therefore, it is possible to improve the versatility and convenience of the column self-supporting jig.

[0010] Furthermore, the connecting support member may have a column contact portion at the end that connects to the U-shaped contact member, which contacts a side of the column that is different from the three sides of the column. According to the above configuration, the U-shaped contact member and connecting support member can support the self-supporting structure of the column made of square steel pipe in all four directions. Therefore, since there is no need to install multiple column self-supporting jigs, the assembly time can be shortened.

[0011] Furthermore, the column contact portion may have a semicircular shape in a side view and a protruding curved surface that projects in the longitudinal direction. According to the above configuration, since the column contact portion has a curved surface that protrudes in the longitudinal direction, it is possible to suppress damage such as deformation to the column that comes into contact with the column self-supporting support at the contact point.

[0012] Furthermore, the U-shaped contact member may have a detachable connecting portion that detachably connects to the connecting support member. With the above configuration, the connecting support member can be easily attached to and detached from the U-shaped contact member, thereby improving the work efficiency of the assembly work for the column self-supporting jig.

[0013] Furthermore, the U-shaped contact member may have a permanent magnet that can be attracted to the column, and the contact surface may contact the side surface of the column via the permanent magnet. With the above configuration, the U-shaped contact member can be attached to the column, thereby improving the work efficiency involved in assembling the column self-supporting jig. [Effects of the Invention]

[0014] According to the column self-supporting jig of the present invention, it is possible to maintain the self-supporting state of the column relative to the foundation, and to shorten the assembly time. Furthermore, the self-supporting column support jig of the present invention makes it possible to maintain the self-supporting state of the column relative to the foundation without requiring a large space. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view showing the building's foundation with the columns already assembled. [Figure 2] This is a perspective view showing how a column is being held upright by a self-supporting jig. [Figure 3] This is a perspective view of a self-supporting jig for a column. [Figure 4] This is a front view of the self-supporting jig for the column. [Figure 5] This diagram shows the flow of the method for supporting the column independently. [Figure 6](a) to (c) are diagrams for explaining the relationship between the fixing position of the foundation beam fixing member and the height of the U-shaped steel plate. [Figure 7] It is a sectional view taken along the line A - A of FIG. 2.

Embodiment for Carrying out the Invention

[0016] Hereinafter, referring to FIGS. 1 to 7, the column self - standing holding jig 1 according to an embodiment of the present invention (hereinafter, this embodiment) will be described. However, the embodiment described below is merely an example for facilitating the understanding of the present invention and does not limit the present invention. That is, the present invention can be changed and improved without departing from its gist, and it is needless to say that equivalents of the present invention are included therein.

[0017] <Overview of Foundation F and Column B> First, referring to FIG. 1, the overview of the building foundation F and the column B erected on the foundation F will be described. As shown in FIG. 1, the foundation F is composed of a column footing foundation F1 to which a column footing B1 located at the lower end of the column B is fixed, and a foundation beam F2 extending laterally from the column footing foundation F1. The column footing foundation F1 is a foundation structure that supports the column footing B1. Anchor bolts F1a and column supports (not shown) for assembling the column footing B1 are embedded in the column footing foundation F1. The anchor bolts F1a and the column supports are used to assemble the column footing B1 to the column footing foundation F1. The foundation beam F2 connects the column footing foundations F1 to each other and supports the building together with the column footing foundations F1. The upper end of the foundation beam F2 is located above the upper end of the column footing foundation F1.

[0018] The column footing B1 is an exposed - type column footing. Specifically, the column footing B1 has a column body B2 and a base plate B3 located at the lower end of the column body B2. The column body B2 is a square steel pipe. The column bodies B2 can be connected to each other by a joint member. Specifically, the column bodies B2 can be connected by connecting the joint member by welding or high - strength bolts.

[0019] The base plate B3 is a plate-like body fixed to the lower end of the column body B2 by welding. The base plate B3 is provided with assembly holes (not shown) and assembly frames (not shown). The assembly holes penetrate the base plate B3 vertically and have a diameter larger than the diameter of the anchor bolts F1a embedded in the column base foundation F1. The assembly frames are provided in the center of the lower surface of the base plate B3 and have a shape corresponding to the column support embedded in the column base foundation F1. Therefore, as described below, the column B can be erected and fixed to the column base foundation F1 via the base plate B3.

[0020] When fixing column B to the column base foundation F1, column B is first suspended from above and lowered onto the column base foundation F1. Next, the worker assembles the column support into the assembly frame and inserts anchor bolts F1a through the assembly holes and fastens them with fastening nuts F1b. At this point, column B is temporarily fixed to the column base foundation F1 and becomes self-supporting. Finally, the worker injects grout between the column base foundation F1 and the base plate B3. This allows column B to be erected and completely fixed to the column base foundation F1.

[0021] Column B, in its temporarily fixed state, is not completely fixed to the column base foundation F1, and no beams are placed between the columns B. Therefore, a column self-supporting jig 1 is used to maintain the self-supporting state of column B and to support the self-supporting state of column B until it is completely fixed to the column base foundation F1.

[0022] Figure 2 shows how the column self-supporting jig 1 holds column B in a self-supporting state. As shown in Figure 2, the column self-supporting jig 1 is used to hold column B in a self-supporting state relative to the column base foundation F1. Furthermore, the column self-supporting jig 1 can support the self-supporting state of column B in all four directions by itself. Therefore, it is not necessary to install a separate jig to support the self-supporting state of column B in each of the four directions. This makes it possible to reduce the time required for assembling the jig. Furthermore, the column self-supporting jig 1 is fixed to the foundation beam F2 that extends from the column base foundation F1, adjacent to the column base foundation F1. Therefore, it is possible to maintain the self-supporting state of column B relative to the column base foundation F1 without requiring a large space around column B. Details of the column self-supporting jig 1 will be described later.

[0023] <Column self-supporting fixture 1> Next, the self-supporting column support jig 1 will be described with reference to Figures 3 and 4. Figure 3 is a perspective view of the self-supporting column support jig 1, and Figure 4 is a front view of the self-supporting column support jig 1. The self-supporting column jig 1 mainly consists of a U-shaped steel plate 10, a foundation beam fixing member 20, and a connecting support member 30.

[0024] <<U-shaped steel plate 10>> The U-shaped steel plate 10 has a roughly U-shape in plan view and is a steel plate having a first contact surface portion 11, a second contact surface portion 12, and a third contact surface portion 13. The first contact surface portion 11 and the second contact surface portion 12 are separated from each other by a distance approximately equal to the width of the column body B2, which is made of a rectangular steel pipe. The first contact surface portion 11 has an elongated shape and has a first base end portion 111 that connects to the third contact surface portion 13 and a first tip portion 112 in which a first insertion hole 113 is formed. Similarly, the second contact surface portion 12 has an elongated shape and has a second base end portion 121 that connects to the third contact surface portion 13 and a second tip portion 122 in which a second insertion hole 123 is formed.

[0025] The third contact surface portion 13 is perpendicular to the first contact surface portion 11 and the second contact surface portion 12, and connects the first base end portion 111 and the second base end portion 121. Therefore, when the U-shaped steel plate 10 is fitted with the column B, the first contact surface portion 11, the second contact surface portion 12, and the third contact surface portion 13 each contact the three sides of the column B (see Figure 2).

[0026] A magnet 131 is attached to the third contact surface 13, and the third contact surface 13 contacts the side surface of column B via the magnet 131. The magnet 131 has magnetic force capable of holding the U-shaped steel plate 10 to column B when attracted to column B. Therefore, as will be described later, the connecting support member 30 can be connected to the U-shaped steel plate 10 while the U-shaped steel plate 10 is held at an appropriate height on column B. In Figure 3, two cylindrical magnets 131 are shown, but of course the shape, number, and arrangement of the magnets 131 are not limited to the shape, number, and arrangement shown in Figure 3. The U-shaped steel plate 10 corresponds to the U-shaped contact member of the present invention, and the magnet 131 corresponds to the permanent magnet of the present invention.

[0027] <<Foundation beam fixing member 20>> The foundation beam fixing member 20 has a fixing plate 21, four fastening members 22 (fastening bolts), and a pair of connecting rings 23, and fixes the column self-supporting jig 1 to the foundation F. The fixing plate 21 is placed on the upper surface of the foundation beam F2 and is fixed to the foundation beam F2 by fastening the fastening member 22 to the fastening member embedded in the foundation beam F2. Figures 2 and 3 show four fastening members 22 at the four corners of the fixing plate 21, but the number and arrangement of the fastening members 22 are not limited to those shown in Figures 2 and 3. The fixing plate 21 may be fixed to the foundation beam F2 by six or eight fastening members 22. The foundation beam fixing member 20 corresponds to the foundation fixing member of the present invention.

[0028] A pair of connecting rings 23 are welded to the fixing plate 21 so as to face each other. A through hole is formed in the center of each connecting ring 23 through which the fixing member connecting shaft 32 of the connecting support member 30 can be inserted. Therefore, the foundation beam fixing member 20 is connected to the connecting support member 30 so as to be rotatable in the vertical plane around the fixing member connecting shaft 32. The foundation beam fixing member 20 is used to fix the connecting support member 30 to the foundation beam F2, but it may also be used as an anchor member to fix the wire rope used to reposition the column B.

[0029] <<Connecting support member 30>> The connecting support member 30 has a main shaft 31, a fixing member connecting shaft 32, and a U-shaped steel plate connecting shaft 33, and supports the column B by connecting the U-shaped steel plate 10 and the foundation beam fixing member 20 to each other. The main shaft 31 is a circular steel pipe having a base end 311 that connects to the fixing member connecting shaft 32 and a tip end 312 that connects to the U-shaped steel plate connecting shaft 33. In other words, the connecting support member 30 (main shaft 31) has an elongated shape and is connected to the foundation beam fixing member 20 and the U-shaped steel plate 10 at both ends in the longitudinal direction (base end 311 and tip end 312). The main shaft 31 may also be a rectangular steel pipe.

[0030] The base end portion 311 is cut by a plane perpendicular to the longitudinal direction of the main shaft 31. Furthermore, a through hole is formed in the base end portion 311 through which the fixing member connecting shaft 32 passes. The tip portion 312 has a contact surface 312a that abuts against the side surface of column B. The contact surface 312a has a semicircular shape in side view and a protruding curved surface that protrudes in the longitudinal direction (see Figure 7). This prevents the side surface of column B from being damaged, such as deformation, at the contact point with the tip portion 312. In addition, a through hole is formed in the tip portion 312 through which the U-shaped steel plate connecting shaft 33 passes. The tip portion 312 corresponds to the end portion that connects to the U-shaped contact member of the present invention, and the contact surface 312a corresponds to the column contact portion of the present invention.

[0031] The fixing member connecting shaft 32 has a fastening nut 32a and rotatably connects the main shaft 31 to the foundation beam fixing member 20. More specifically, the fixing member connecting shaft 32 passes horizontally through a pair of connecting rings 23 and a through hole formed in the base end 311 of the main shaft 31, and screws into the fastening nut 32a. As a result, the main shaft 31 can rotate in the vertical plane around the fixing member connecting shaft 32.

[0032] The U-shaped steel plate connecting shaft 33 has a fastening nut 33a and rotatably connects the main shaft 31 to the U-shaped steel plate 10. More specifically, the U-shaped steel plate connecting shaft 33 passes horizontally through the first insertion hole 113 and the second insertion hole 123 of the U-shaped steel plate 10 and through a through hole formed in the tip portion 312 of the main shaft 31, and screws into the fastening nut 33a. Therefore, the main shaft 31 can rotate in a vertical plane around the U-shaped steel plate connecting shaft 33. The U-shaped steel plate connecting shaft 33 can be removed from the main shaft 31 and the U-shaped steel plate 10 by rotating the fastening nut 33a. This allows the U-shaped steel plate 10 and the connecting support member 30 to be separated from each other. In other words, the connecting support member 30 is detachable from the U-shaped steel plate 10. The first insertion hole 113 and the second insertion hole 123 of the U-shaped steel plate 10 correspond to the detachable connecting portion of the present invention.

[0033] <Method for supporting a column independently using a self-supporting column support jig 1> Next, we will explain how to maintain the self-supporting state of column B relative to the foundation F using the column self-supporting jig 1. Figure 5 shows the workflow for maintaining the self-supporting state of column B using the self-supporting column support jig 1. As shown in Figure 5, the column base B1 of column B is first assembled to the column base foundation F1 (step S10). Specifically, the worker lifts column B using a lifting machine and lowers column B onto the column base foundation F1. The worker then assembles the column support of the column base foundation F1 to the assembly frame provided at the lower end of the base plate B3, and inserts the anchor bolt F1a through the assembly hole and fastens it with the fastening nut F1b. This temporarily fixes column B to the column base foundation F1.

[0034] Next, the worker fixes the foundation beam fixing member 20 to the upper surface of the foundation beam F2 (step S11). Specifically, the worker places the fixing plate 21 on the foundation beam F2 and fastens the fastening members 22 through the through holes formed at the four corners of the fixing plate 21 to the fastened members (e.g., high nuts) of the foundation beam F2. The fastened members are pre-embedded in the foundation beam F2. Therefore, the worker confirms the position of the fastened members from above the foundation beam F2 and fixes the foundation beam fixing member 20 on top of them. Next, the worker connects the connecting support member 30 to the foundation beam fixing member 20 via the fixing member connecting shaft 32. However, the connecting support member 30 may be connected to the foundation beam fixing member 20 in advance.

[0035] Next, the worker attaches the U-shaped steel plate 10 to column B (step S12). Specifically, the worker attaches the U-shaped steel plate 10 to column B by fitting it onto the side surface of column B, which is made of square steel plate. Here, the U-shaped steel plate 10 is fitted onto the side surface of column B so that the third contact surface portion 13 of the U-shaped steel plate 10 contacts the side surface furthest from the foundation beam fixing member 20. At this time, the magnet 131 provided on the third contact surface portion 13 is attracted to column B. Therefore, even if the worker releases their hand from the U-shaped steel plate 10, the U-shaped steel plate 10 is held in contact with column B.

[0036] Next, the worker connects the U-shaped steel plate 10 and the foundation beam fixing member 20 using the connecting support member 30 (step S13). Specifically, the worker connects the U-shaped steel plate 10 and the foundation beam fixing member 20 via the connecting support member 30 by passing the U-shaped steel plate connecting shaft 33 through the first insertion hole 113 and the second insertion hole 123 of the U-shaped steel plate 10 and the tip portion 312 of the main shaft 31.

[0037] Figure 2 shows the column self-supporting jig 1 attached to the foundation beam F2 and column B. As shown in Figure 2, column B is supported in a self-supporting state by the column self-supporting jig 1 fixed to the foundation beam F2. More specifically, column B, which is made of square steel, has three sides that are in contact with the U-shaped steel plate 10. In addition, the sides other than those in contact with the U-shaped steel plate 10 are in contact with the tip 312 of the main shaft 31 of the connecting support member 30. In other words, all four sides of column B are in contact with the column self-supporting jig 1, and the column is supported in a self-supporting state by the column self-supporting jig 1 from all four directions.

[0038] Furthermore, the column self-supporting jig 1 is fixed to the foundation beam F2 via the foundation beam fixing member 20. Therefore, there is no need to secure space around column B (for example, in all four directions) to fix stay wires for supporting the self-supporting state of column B. This makes it possible to maintain the self-supporting state of column B relative to the foundation F without requiring a large space around column B.

[0039] Furthermore, the foundation beam fixing member 20 is a fixing fitting that can be used when repositioning column B. Therefore, the foundation beam fixing member 20 can be fixed to the foundation beam F2 using existing fastening members that were used for the purpose of repositioning column B. As a result, there is no need to construct a new structure to fix the column self-supporting jig 1 to the foundation beam F2, and it is possible to suppress the increase in cost of the column self-supporting jig 1.

[0040] Figure 6 shows the relationship between the fixing position of the foundation beam fixing member 20 to the foundation beam F2 and the attachment position (attachment height) of the U-shaped steel plate 10 to the column B. As described above, the foundation beam fixing member 20 is fixed to a fastening member that is pre-installed on the foundation beam F2 and used when the column B is re-erected. The position of the fastening member varies depending on the house and the region in which the house is built. Therefore, the U-shaped steel plate 10 is brought into contact with the column B at a height corresponding to the position of the fastening member (the distance between the column B and the foundation beam fixing member 20). This makes it possible to hold the column B in an upright state by the column self-supporting jig 1 even if the position of the fastening member changes.

[0041] Figure 6(a) shows how the foundation beam fixing member 20 and column B are fixed at position P1, where they are furthest apart. As shown in Figure 6(a), when the foundation beam fixing member 20 is fixed at position P1, the connecting support member 30 unfolds approximately horizontally to connect the foundation beam fixing member 20 and the U-shaped steel plate 10. As a result, the connecting support member 30 supports column B above the column base B1 at approximately the same height as the top surface of the foundation beam F2.

[0042] Figure 6(b) shows how the foundation beam fixing member 20 is fixed at position P2, which is closer to the column B than position P1. As shown in Figure 6(b), when the foundation beam fixing member 20 is fixed at position P2, the connecting support member 30 extends diagonally upward at an angle of approximately 45 degrees in the vertical plane, connecting the foundation beam fixing member 20 and the U-shaped steel plate 10. As a result, the connecting support member 30 supports the column B at a position above the column base B1 and higher than the upper surface of the foundation beam F2.

[0043] Figure 6(c) shows the foundation beam fixing member 20 fixed at position P3, which is closest to the column B. As shown in Figure 6(c), when the foundation beam fixing member 20 is fixed at position P3, the connecting support member 30 extends diagonally upward so as to be almost upright, connecting the foundation beam fixing member 20 and the U-shaped steel plate 10. As a result, the connecting support member 30 supports the column B at a position above the column base B1 and even higher than the upper surface of the foundation beam F2.

[0044] In this manner, the connecting support member 30 is rotatably connected to the foundation beam fixing member 20 and the U-shaped steel plate 10, and supports the self-supporting of column B at an angle corresponding to the fixing position of the foundation beam fixing member 20 (the distance between column B and the foundation beam fixing member 20). Therefore, there is no need to manufacture multiple types of self-supporting column holding jigs 1 depending on the fixing position of the foundation beam fixing member 20, thereby increasing the versatility and convenience of the self-supporting column holding jig 1.

[0045] Furthermore, as shown in Figure 2 and Figure 7 of the AA cross-sectional view in Figure 2, the tip 312 of the main shaft 31 of the connecting support member 30 abuts against the side surface of column B. As shown in Figure 2, the tip 312 abuts against column B on the side surface where the first contact surface 11, second contact surface 12, and third contact surface 13 of the U-shaped steel plate 10 are not in contact. As a result, column B is supported from four directions by the U-shaped steel plate 10 and the connecting support member 30, enabling it to maintain an upright state.

[0046] Furthermore, as shown in Figure 7, the contact surface 312a has a semicircular shape when viewed from the side. In addition, the contact surface 312a has a protruding curved surface that protrudes in the longitudinal direction of the main shaft 31. Therefore, even if the connecting support member 30 is tilted according to the fixing position of the foundation beam fixing member 20, it is possible to suppress deformation or other damage to the side surface in which the tip portion 312 contacts the column B.

[0047] With the above steps completed, the process of making column B self-supporting on the foundation F using the column self-supporting jig 1 is finished, and the self-supporting state of column B is maintained. By using the column self-supporting jig 1, it is not necessary to install a jig to maintain the self-supporting state of column B in each of the four directions, thus making it possible to shorten the assembly time. Furthermore, since the column self-supporting jig 1 is fixed to the foundation beam F2, it is possible to maintain the self-supporting state of column B without having to secure a large space around column B in order to fix column B.

[0048] The above-described embodiment of the self-supporting column holder 1 is merely an example to facilitate understanding of the present invention and does not limit the present invention. In the embodiment described above, the connecting support member 30 and the U-shaped steel plate 10 were described as being attached and detached by rotating the fastening nut 33a, but the method of attachment and detachment is not limited to this. The U-shaped steel plate 10 may have attachment / detachment grooves that allow the U-shaped steel plate connecting shaft 33 to pass through the first insertion hole 113 and the second insertion hole 123. In this case, the worker can easily attach and detach the connecting support member 30 and the U-shaped steel plate 10 by passing the U-shaped steel plate connecting shaft 33 through the attachment / detachment grooves.

[0049] Furthermore, in the embodiments described above, the U-shaped steel plate 10 was described as having a magnet 131 that attracts to the column B and making contact with the side surface of the column B via the magnet 131, but it is not limited to this. The U-shaped steel plate 10 may also have a shrinkable sheet material that improves the frictional force between the first contact surface portion 11, the second contact surface portion 12, and the third contact surface portion 13 and the side surface of the column B, and may be held in contact with the column B by the frictional force.

[0050] Furthermore, although the above-described embodiment explained that the U-shaped steel plate 10 is made of steel plate, it is not limited to this. It is sufficient that it has the strength necessary to maintain the self-supporting state of column B, and a U-shaped wooden board made of wood may also be used.

[0051] Furthermore, although the above-described embodiment explained that column B is maintained in an upright state by a single column self-supporting jig 1, it is not limited to this. Multiple column self-supporting jig 1 may be arranged around column B, and the multiple column self-supporting jig 1 may cooperate with each other to maintain the upright state of column B. [Explanation of Symbols]

[0052] 1. Self-supporting jig for columns 10. U-shaped steel plate (U-shaped contact member) 11 First contact surface part 111 First proximal end 112 First tip 113 First insertion hole 12 Second contact surface part 121 Second proximal end 122 Second tip 123 Second insertion hole 13 Third contact surface part 131 Magnets (Permanent Magnets) 20 Foundation beam fixing member (foundation fixing member) 21 Fixing plate 22 Fastening members 23 Connecting rings 30 Connecting support member 31 Main shaft 311 Proximal end 312 Tip 312a Contact surface 32 Fixing member connecting shaft 32a Fastening nut 33 U-shaped steel plate connecting shaft 33a Fastening nut B pillar B1 Pillar base B2 Column Body B3 Base Plate F Foundation F1 column base foundation F1a Anchor Bolt F1b fastening nut F2 foundation beam

Claims

1. A column self-supporting jig used to maintain the self-supporting state of a column relative to a foundation, A foundation fixing member fixed to the aforementioned foundation, A U-shaped contact member having contact surfaces that contact each of the three sides of the column made of a rectangular steel pipe, A self-supporting column jig characterized by comprising a connecting support member that connects the foundation fixing member and the U-shaped contact member, and supports the column above the base of the column via the U-shaped contact member.

2. The connecting support member has an elongated shape and is rotatably connected in a vertical plane to the foundation fixing member and the U-shaped contact member at both ends in the longitudinal direction. The column self-supporting jig according to claim 1, characterized in that the U-shaped contact member contacts the column at a height corresponding to the distance between the column and the foundation fixing member.

3. The self-supporting column jig according to claim 2, characterized in that the connecting support member has a column contact portion at the end that connects to the U-shaped contact member, which contacts a side of the column different from the three side surfaces.

4. The column self-supporting jig according to claim 3, characterized in that the column contact portion has a semicircular shape in a side view and a protruding curved surface that protrudes in the longitudinal direction.

5. The column self-supporting jig according to claim 1, characterized in that the U-shaped contact member has a detachable connecting portion that detachably connects the connecting support member.

6. The column self-supporting jig according to claim 1, characterized in that the U-shaped contact member has a permanent magnet that can be attracted to the column, and the contact surface contacts the side surface of the column via the permanent magnet.

Images