Column base position adjustment jig

Abstract

To provide a column base positioning jig that simplifies positioning work and reduces working time. [Solution] The column base position adjustment jig 1 is used to adjust the horizontal position of the column base B when fixing the column base B to the foundation F. The column base position adjustment jig 1 comprises a U-shaped steel plate 10 having contact surfaces that contact each of the three sides of the column base B which has a square steel pipe, a position adjustment jig body 20 interposed between the foundation F and the column base B to displace the horizontal position of the column base B and the U-shaped steel plate 10 relative to the foundation F, and a pair of connecting wires 30 that connect the position adjustment jig body 20 and a pair of tip portions of the U-shaped steel plate 10. The position adjustment jig body 20 has a foundation contact portion 21 that contacts the foundation F, a column base contact portion 23 that can extend and retract in the direction away from the foundation contact portion 21, and a rotating portion 24 provided between the foundation contact portion 21 and the column base contact portion 23, connected to the connecting wires 30, and rotatable around a central rotating shaft 243 that extends in the vertical direction.

Description

Technical Field

[0005] , , ,

[0001] The present invention relates to a column base position adjusting tool, and particularly to a column base position adjusting tool used for adjusting the position of a column base relative to a foundation.

Background Art

[0002] The lower end of a column is called a column base and is firmly fixed to a foundation, which is a substructure, to support a building. Conventionally, a method called "exposed type" has become widespread, in which the column base is fixed to the foundation by connecting an anchor bolt embedded in the foundation and a base plate fixed to the column base. To explain the fixed method of the exposed type column base, the base plate is formed with assembly holes through which the anchor bolts can be inserted, and the column base is assembled to the foundation via the base plate by inserting the anchor bolts into the assembly holes and fastening them. At this time, in order to fix the column base at an accurate position, an operation of adjusting the position of the column base is required.

[0003] Patent Document 1 describes a position adjusting tool capable of adjusting the position of a column base relative to a foundation. The position adjusting tool described in Patent Document 1 is attached between the foundation and the column base and has an extension member whose protruding length from the foundation can be changed. An operator can align the column base by changing the extension length of the extension member relative to the foundation.

Prior Art Documents

Patent Documents

[0004] [[ID=​​​​​​​​​​​Although the position of the column base can be adjusted using the position adjustment jig described in Patent Document 1, further improvements were desired. Specifically, when adjusting the position of the column base using the position adjustment jig described in Patent Document 1, two position adjustment jigs had to be attached to each foundation beam, and each position adjustment jig had to be operated in sequence. Therefore, when adjusting the position of the column base for four foundation beams, the position adjustment work had to be repeated eight times, and a reduction in the work time required for adjusting the position of the foundation beams relative to the column base was desired.

[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 base position adjustment jig that can simplify position adjustment work and shorten working time. [Means for solving the problem]

[0007] The aforementioned problem is solved by the column base position adjustment jig of the present invention, which is used to adjust the horizontal position of a column base when fixing the column base to a foundation, and comprises a U-shaped contact member having contact surfaces that contact each of the three sides of the column base having a square steel pipe, a position adjustment jig body interposed between the foundation and the column base and displacing the horizontal position of the column base and the U-shaped contact member with respect to the foundation, and a pair of connecting members connecting the position adjustment jig body and a pair of tip portions of the U-shaped contact member, wherein the position adjustment jig body has a foundation contact portion that contacts the foundation, a column base contact portion that can extend and retract in a direction away from the foundation contact portion, and a rotating portion provided between the foundation contact portion and the column base contact portion, connected to the pair of connecting members and rotatable around a rotation axis extending in the vertical direction.

[0008] According to the above configuration, the column base position adjustment jig has a foundation contact portion that contacts the foundation, a column base contact portion that can extend and retract in the direction away from the foundation contact portion, and a rotating portion that is connected to a U-shaped contact portion via a connecting member and can rotate around a rotation axis that extends in the vertical direction. As a result, the worker can slide the column base by extending and retracting the column base contact portion, and rotate the column base by rotating the rotating portion. Therefore, the column base can be slid and rotated using only the column base position adjustment jig, which simplifies the position adjustment work and reduces working time compared to when position adjustment is performed using multiple position adjustment jigs.

[0009] Furthermore, the foundation contact portion may be an angle member that contacts the upper surface of the foundation and the opposing surface that is perpendicular to the upper surface of the foundation and faces the column base. According to the above configuration, when the foundation contact portion is brought into contact with the foundation, the column base position adjustment jig can be held in an appropriate position relative to the foundation, thereby improving the work efficiency of position adjustment work using the position adjustment jig.

[0010] Furthermore, the column base contact portion is a fastening member having a rotatable head and a threaded portion extending from the head, and the distance between the foundation and the column base is changed by displacing the head in a direction away from the foundation contact portion when the head is rotated. With the above configuration, the column base contact portion can be extended or retracted by rotating the head of the fastening member, making it possible to precisely adjust the distance between the foundation and the column base.

[0011] Furthermore, the head portion of the column base contact portion may have a protruding curved surface that projects toward the column base. According to the above configuration, the head of the column base contact portion that abuts against the column base has a curved surface that protrudes toward the column base, making it possible to suppress damage such as deformation to the column base by the column base position adjustment jig.

[0012] Furthermore, the rotating shaft is a fastening member having a rotatable head and a threaded portion extending from the head, located on a straight line connecting the foundation and the contact portion of the foundation contact portion, and the column base and the contact portion of the column base contact portion, wherein the rotating portion rotates the U-shaped contact member and the column base in contact with the U-shaped contact member via the connecting member by rotating the head. With the above configuration, the rotating part can be rotated by rotating the head of the fastening member, making it possible to precisely adjust the rotational position of the column base relative to the foundation. In addition, as it rotates, it becomes possible to adjust the horizontal position of the column base in a direction perpendicular to the longitudinal direction of the column base contact part.

[0013] Furthermore, the U-shaped contact member may have a detachable groove that allows a pair of the connecting members to be attached and detached. With the above configuration, the connecting member can be easily attached to and detached from the U-shaped contact member, thereby improving the workability involved in assembling the position adjustment jig.

[0014] Furthermore, it is preferable that the U-shaped contact member be provided with a permanent magnet that can be attracted to the column base. With the above configuration, the U-shaped contact member can be attached to the column base, thereby improving the workability involved in assembling the position adjustment jig. [Effects of the Invention]

[0015] The column base position adjustment jig of the present invention makes it possible to simplify the position adjustment work and reduce the working time. [Brief explanation of the drawing]

[0016] [Figure 1] This is a perspective view showing the state after the column bases have been assembled to the building's foundation. [Figure 2] This is a perspective view showing the building before the column bases are attached to the foundation. [Figure 3] This is a perspective view of a column base positioning jig. [Figure 4]This is a top view of the column base position adjusting jig. [Figure 5] This is a side view of the column base position adjusting jig. [Figure 6] This is a diagram showing the flow of the column base position adjustment work. [Figure 7] This is a diagram showing how the column base is slid using the column base position adjusting jig. [Figure 8] This is a diagram showing how the column base is rotated using the column base position adjusting jig.

Mode for Carrying Out the Invention

[0017] Hereinafter, referring to FIGS. 1 to 8, the column base position adjusting 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 the gist thereof, and it is needless to say that equivalents thereof are included in the present invention.

[0018] <Outline of the Foundation F and the Column Base B> First, referring to FIGS. 1 and 2, the outline of the building foundation F and the column base B fixed to the foundation F will be described. As shown in FIGS. 1 and 2, the foundation F is composed of a column base foundation F1 to which the column base B is fixed and a foundation beam F2 extending laterally from the column base foundation F1. The column base foundation F1 is a foundation structure that supports the column base B. Anchor bolts F1a and column supports F1b for assembling the column base B are embedded in the column base foundation F1. The anchor bolts F1a and the column supports F1b are used to assemble the column base B to the column base foundation F1.

[0019] Also, on the upper surface of the column base foundation F1, a ground ink F3 indicating the fixed position of the column base B is drawn. Specifically, four ground inks F3 are drawn so as to extend from the center of the column base foundation F1 in all directions. The ground ink F3 is used when adjusting the position of the column base B with respect to the column base foundation F1. The method of adjusting the position of the column base B will be described later. Foundation beam F2 connects the column base foundations F1 together and supports the building in conjunction with the column base foundations F1. The upper end of foundation beam F2 is located above the upper end of the column base foundations F1.

[0020] Column base B is an exposed type column base. Specifically, column base B consists of column B1 and a base plate B2 located at the lower end of column B1. Column B1 is a square steel pipe. The base plate B2 is a plate-like body fixed to the lower end of the column B1 by welding. The base plate B2 is provided with an assembly hole B2a and an assembly frame (not shown). The assembly hole B2a penetrates the base plate B2 vertically and has a hole diameter larger than the diameter of the anchor bolt F1a embedded in the column base foundation F1. The assembly frame is provided in the center of the lower surface of the base plate B2 and has a shape corresponding to the column support F1b (shear fitting) embedded in the column base foundation F1. Therefore, as will be explained below, the column base B can be fixed to the column base foundation F1 via the base plate B2.

[0021] Four marking lines B3 are drawn on the side surface B2d of the base plate B2. Specifically, the marking lines B3 extend vertically from the center of the side surface B2d of the base plate B2. Marking lines B3 are used when positioning the column base B relative to the column base foundation F1.

[0022] When fixing column base B to column base foundation F1, column base B is first suspended from above and lowered over column base foundation F1. Then, column support F1b is assembled to the assembly frame, and anchor bolts F1a are inserted through assembly holes B2a and fastened with fastening nuts F1c, thereby allowing column base B to be assembled to column base foundation F1. Here, the diameter of the assembly hole B2a is larger than the diameter of the anchor bolt F1a. As a result, column base B may be assembled in a position that is horizontally off-center relative to column base foundation F1. More specifically, it may be assembled in a position different from the correct position where the four ground markings F3 drawn on column base foundation F1 and the four marking lines B3 drawn on base plate B2 overlap vertically. Column base position adjustment jig 1 is used to adjust the position of column base B to the correct position relative to column base foundation F1 in such cases. Details of column base position adjustment jig 1 will be described later.

[0023] <Column base position adjustment jig 1> Next, the column base position adjustment jig 1 will be described with reference to Figures 3 to 5. Figures 3, 4, and 5 are perspective views, top views, and side views, respectively, of the column base position adjustment jig 1 viewed from the diagonal front. The column base position adjustment jig 1 mainly consists of a U-shaped steel plate 10, a position adjustment jig body 20, and a connecting wire 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 base B, which is made of a square 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 and a first attachment / detachment groove 114 are formed. The second contact surface portion 12 also 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 and a second attachment / detachment groove 124 are formed.

[0025] The first attachment / detachment groove 114 and the second attachment / detachment groove 124 are sized to allow the U-shaped steel plate connecting ring 33 of the connecting wire 30 to pass through. Therefore, the U-shaped steel plate connecting ring 33 can be easily inserted into the first insertion hole 113 and the second insertion hole 123.

[0026] 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, the U-shaped steel plate 10 can be fitted to the column base B by having the first contact surface portion 11, the second contact surface portion 12, and the third contact surface portion 13 abut against the three sides of the column base B, respectively.

[0027] A magnet 131 is attached to the third contact surface 13. The magnet 131 has magnetic force that allows the column base position adjustment jig 1 to be held on the column base B when attracted to it. Therefore, as will be described later, the connecting wire 30 can be connected to the U-shaped steel plate 10 while the U-shaped steel plate 10 is held at an appropriate height position on the column base 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.

[0028] <<Position adjustment jig body 20>> The position adjustment jig body 20 is interposed between the foundation beam F2 and the column base B, and plays the role of displacing the horizontal position of the column base B and the U-shaped steel plate 10 relative to the foundation beam F2. The position adjustment jig body 20 mainly consists of a foundation contact part 21, a long nut 22, a column base contact part 23, and a rotating member 24. The foundation contact portion 21, the long nut 22, and the column base contact portion 23 have the role of adjusting the position of the column base B by sliding the column base B relative to the foundation beam F2 and changing the distance between the foundation beam F2 and the column base B. In addition, the rotating member 24 has the role of adjusting the position of the column base B by rotating the column base B via the connecting wire 30 and the U-shaped steel plate 10.

[0029] The foundation contact portion 21 has an angle plate 211 placed on the foundation beam F2 and a screw shaft portion 212 connected to the angle plate 211, and plays the role of holding the position adjustment jig body 20 in the correct position relative to the foundation beam F2. The angle plate 211 has a first contact surface portion 211a and a second contact surface portion 211b that are perpendicular to each other. The first contact surface portion 211a is a flat horizontal surface and contacts the upper surface of the foundation beam F2 as described later. The second contact surface portion 211b is a flat vertical surface and contacts the front surface of the foundation beam F2. The angle plate 211 corresponds to the angle material of the present invention.

[0030] The screw shaft portion 212 is connected to the second contact surface portion 211b so as to extend perpendicularly to the second contact surface portion 211b. As shown in Figures 3 and 5, the screw shaft portion 212 is connected to the lower end of the second contact surface portion 211b, but of course the connection position is not limited to the position shown in Figures 3 and 5. Furthermore, a screw groove is formed on the outer circumference of the screw shaft portion 212, which can be screwed into the long nut 22 described later. Therefore, by rotating the foundation contact portion 21 and the long nut 22 relative to each other, the distance between the foundation contact portion 21 and the long nut 22 can be changed.

[0031] The long nut 22 is interposed between the foundation contact portion 21 and the column base contact portion 23, fastening them together in an expandable and expandable manner. More specifically, the inner circumferential surface of the long nut 22 has a screw groove that can be screwed into the screw shaft portion 212 of the foundation contact portion 21 and the screw shaft portion 232 of the column base contact portion 23. Therefore, by rotating the foundation contact portion 21 or the column base contact portion 23 relative to the long nut 22, the distance between the second contact surface portion 211b of the foundation contact portion 21 and the head portion 231 of the column base contact portion 23 can be changed. Furthermore, a through hole (not shown) is formed at the longitudinal center of the long nut 22, through which the central rotation axis 243 of the rotating member 24 (described later) can pass. In other words, the long nut 22 and the rotating member 24 are rotatably connected to each other.

[0032] The column base contact portion 23 is a fastening member having a head portion 231 that contacts the column base B and a screw shaft portion 232 extending from the head portion 231. As shown in Figure 4, the head portion 231 has a rotatable operating portion 231a that has a hexagonal shape when viewed from the axial direction, and a tip portion 231b located at the tip of the column base contact portion 23. The tip portion 231b has a protruding curved surface that protrudes in the longitudinal direction of the column base contact portion 23 (towards the column base B). Therefore, when adjusting the position of the column base B, the tip portion 231b comes into contact with the column base B, which helps to prevent the column base B from being damaged, such as by deformation.

[0033] The screw shaft portion 232 has a screw groove formed therein that can be screwed into the long nut 22. Therefore, by rotating the head portion 231, the column base contact portion 23 can be displaced in a direction away from the foundation contact portion 21, thereby making it possible to adjust the distance between the foundation beam F2 and the column base B. The screw shaft portion 232 corresponds to the screwed portion of the present invention.

[0034] The rotating member 24 has an upper plate 241, a lower plate 242, a central rotating shaft 243, and a pair of connecting shafts 244. The rotating member 24 rotates in the horizontal plane around the central rotating shaft 243 when the central rotating shaft 243 is rotated. When the rotating member 24 rotates, the column base B rotates via a pair of connecting wires 30 connected to the pair of connecting shafts 244 (described later) and the U-shaped steel plate 10.

[0035] As shown in Figure 5, the upper plate 241 and the lower plate 242 are a pair of steel plates positioned to abut the upper and lower surfaces of the long nut 22. The upper plate 241 and the lower plate 242 have an elongated shape, and a central rotating shaft 243 passes through their longitudinal centers and is welded to each other. As described above, the central rotating shaft 243 passes through the long nut 22 in the vertical direction. In addition, a pair of connecting shafts 244 pass through both longitudinal ends of the upper plate 241 and the lower plate 242 and are welded to each other. Therefore, the upper plate 241 and the lower plate 242 are fixed facing each other at a distance corresponding to the dimensions of the long nut 22.

[0036] The central rotating shaft 243 has a head 243a, a body (not shown), a nut (not shown) that screws into the body, and extends vertically, passing through the upper plate 241, the lower plate 242, and the long nut 22. More specifically, the central rotating shaft 243 passes through through holes formed in the center of the upper plate 241, the lower plate 242, and the long nut 22, and is welded to the upper plate 241 and the lower plate 242. On the other hand, the central rotating shaft 243 is not fixed to the long nut 22.

[0037] The connecting shaft 244 has a head portion 244a, a body portion 244b, and a nut 244c that screws into the body portion 244b, and passes through the upper plate 241 and the lower plate 242 in the vertical direction (see Figure 5). In addition, a rotating member connecting ring 32 of the connecting wire 30 is attached to the body portion 244b.

[0038] <<Connecting wire 30>> The connecting wire 30 connects the U-shaped steel plate 10 and the position adjustment jig body 20, and is a wire member that displaces the column base B via the U-shaped steel plate 10 when the position adjustment jig body 20 is operated. More specifically, the connecting wire 30 has a wire rope body 31 and a rotating member connecting ring 32 and a U-shaped steel plate connecting ring 33 that are terminally processed into a ring shape. The connecting wire 30 corresponds to the connecting member of the present invention.

[0039] The rotating member connecting ring 32 and the U-shaped steel plate connecting ring 33 are located at both ends of the connecting wire 30. The rotating member connecting ring 32 has dimensions that allow the connecting shaft 244 of the rotating member 24 to pass through. On the other hand, the U-shaped steel plate connecting ring 33 has a diameter that allows it to pass through the first attachment / detachment groove 114 and the second attachment / detachment groove 124 of the U-shaped steel plate 10. Therefore, by attaching the U-shaped steel plate connecting ring 33 to the first insertion hole 113 and the second insertion hole 123 from the state in which the rotating member connecting ring 32 is attached to the connecting shaft 244, the U-shaped steel plate 10 and the position adjustment jig body 20 can be connected to each other.

[0040] <Method for adjusting the position of column base B using column base position adjustment jig 1> Next, we will explain the method for adjusting the position of column base B relative to column base foundation F1. Figure 6 shows the workflow for adjusting the position of column base B relative to column base foundation F1. As shown in Figure 6, column base B is first assembled to column base foundation F1 (step S10). Specifically, the worker lifts column B1 using a lifting machine and lowers it onto column base foundation F1. The worker then assembles the column support F1b of column base foundation F1 to the assembly frame provided at the lower end of base plate B2, and inserts anchor bolts F1a through assembly holes B2a and fastens them with fastening nuts F1c. This completes the assembly of column base B to column base foundation F1.

[0041] Next, the worker attaches the position adjustment jig body 20 between the column base foundation F1 and the foundation beam F2 (step S11). Specifically, the worker attaches the position adjustment jig body 20 by placing the angle plate 211 on the foundation beam F2 so that the first contact surface 211a and the second contact surface 211b of the foundation contact portion 21 contact the upper surface of the foundation beam F2 and the opposing surface facing the column base B, respectively.

[0042] Next, the worker attaches the U-shaped steel plate 10 to the column base B (step S12). Specifically, the worker attaches the U-shaped steel plate 10 to the column base B by fitting it onto the side surface of the column base B, which is made of a rectangular steel plate. At this time, the magnet 131 provided on the third contact surface 13 of the U-shaped steel plate 10 is attracted to the column base 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 the column base B.

[0043] Next, the worker connects the position adjustment jig body 20 and the U-shaped steel plate 10 with a pair of connecting wires 30 (step S13). Specifically, the worker passes the U-shaped steel plate connecting rings 33 of the pair of connecting wires 30 through the first attachment / detachment groove 114 formed in the first contact surface portion 11 and the second attachment / detachment groove 124 formed in the second contact surface portion 12 of the U-shaped steel plate 10. As a result, the pair of U-shaped steel plate connecting rings 33 are attached to the first insertion hole 113 of the first contact surface portion 11 and the second insertion hole 123 of the second contact surface portion 12, connecting the position adjustment jig body 20 and the U-shaped steel plate 10.

[0044] Next, the worker adjusts the position of column base B relative to column base foundation F1 (step S14). Specifically, the worker uses column base position adjustment jig 1 to adjust the position of column base B so that the ground mark F3 drawn on column base foundation F1 and the marking line B3 drawn on column base B are aligned vertically. This will be explained in more detail below.

[0045] Figure 7 is a top view showing how the position of column base B is adjusted by sliding column base B against the column base foundation F1. The foundation contact portion 21 of the position adjustment jig body 20 is placed on the foundation beam F2 and is in contact with the upper surface of the foundation beam F2 and the opposing surface facing column base B.

[0046] The column base contact portion 23 expands and contracts relative to the long nut 22 in the direction indicated by arrow A1 by rotating the head 231 using a tool such as a wrench S. In other words, the column base contact portion 23 expands and contracts in the direction away from the foundation contact portion 21. Therefore, the worker can slide the column base B relative to the foundation beam F2 by rotating the head 231 so that it moves away from the foundation contact portion 21 while the head 231 is in contact with the column base B. This allows the worker to adjust the position of the column base B in the direction indicated by arrow A1 using the column base position adjustment jig 1.

[0047] Figure 8 is a top view showing how the position of column base B is adjusted by rotating it relative to the column base foundation F1. The foundation contact portion 21 of the position adjustment jig body 20 is placed on the foundation beam F2. The U-shaped steel plate 10 is fitted to column base B with its first contact surface portion 11, second contact surface portion 12, and third contact surface portion 13 in contact with the side surface of column base B. The U-shaped steel plate 10 is also connected to the position adjustment jig body 20 via a pair of connecting wires 30.

[0048] The rotating member 24 rotates in the direction indicated by arrow A2 around the central rotation axis 243 relative to the long nut 22 by rotating the central rotation axis 243 of the rotating member 24 using a tool such as a wrench S. Therefore, by rotating the head 243a of the central rotation axis 243, the worker can rotate the U-shaped steel plate 10, which is fitted to the column base B, via the connecting wire 30, and as a result the column base B can be rotated relative to the column base foundation F1. This allows the worker to adjust the position of the column base B in the direction indicated by arrow A2 using the column base position adjustment jig 1.

[0049] Here, the central rotation axis 243 is located on the straight line (the dashed line L in Figure 8) connecting the contact point between the foundation beam F2 and the foundation contact point 21 (the second contact surface 211b of the angle plate 211) and the contact point between the column base B and the column base contact point 23 (the head 231). Therefore, by rotating the column base B around the central rotation axis 243, the position of the column base B can be adjusted in a direction perpendicular to the straight line L (the vertical direction in Figure 8).

[0050] With the above steps completed, the positioning of column base B relative to column base foundation F1 is finished. By using the column base position adjustment jig 1, the worker can adjust the position of column base B without using multiple jigs as in the conventional method, thus simplifying the position adjustment work and reducing working time.

[0051] The column base position adjustment jig 1 according to one embodiment of the present invention has been described above. However, the above-described embodiment is merely an example to facilitate understanding of the present invention and does not limit the present invention. In the embodiments described above, the foundation contact portion 21 was described as having an angle plate 211 that can contact the upper surface of the foundation beam F2 and the opposing surface facing the column base B, but it is not limited to this. The foundation contact portion 21 may be made of bolts, and the heads of the bolts may be in contact with the opposing surface of the foundation beam F2.

[0052] Furthermore, although the above-described embodiment was explained as having a first attachment / detachment groove 114 and a second attachment / detachment groove 124 for attaching and detaching the connecting wire 30, it is not limited to this. The U-shaped steel plate connecting ring 33 of the connecting wire 30 may have a key ring that can be attached and detached to the first insertion hole 113 and the second insertion hole 123 of the U-shaped steel plate 10.

[0053] 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. Any U-shaped wooden board made of wood may be used as long as it has sufficient strength for the position adjustment work of the column base B. [Explanation of Symbols]

[0054] 1. Column base position adjustment jig 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 114 First attachment / detachment groove 12 Second contact surface part 121 Second proximal end 122 Second tip 123 Second insertion hole 124 Second attachment / detachment groove 13 Third contact surface part 131 Magnets (Permanent Magnets) 20 Position adjustment jig body 21 Foundation contact part 211 Angle board (angle material) 211a First contact surface part 211b Second contact surface part 212 Screw shaft 22 Long nuts 23 Column base contact part 231 Head 231a Rotated operation part 231b Tip 232 Screw shaft portion (threaded portion) 24 Rotating Member 241 Upper plate 242 Lower plate 243 Central rotation axis 243a Head 244 Connecting shaft 244a Head 244b Body part 244c nut 30 Connecting wire (connecting component) 31 Wire rope body 32 Rotating Member Connecting Ring 33 U-shaped steel plate connecting ring B Column base B1 pillar B2 Base Plate B2a Assembly hole B2d side view B3 Scribble lines F Foundation F1 column base foundation F1a Anchor Bolt F1b Column support F1c fastening nut F2 foundation beam F3 Ground Mark S spanner

Claims

1. A column base position adjustment jig used to adjust the horizontal position of a column base when fixing the column base to a foundation, A U-shaped contact member having contact surfaces that contact each of the three sides of the column base having a rectangular steel pipe, A position adjustment jig body interposed between the foundation and the column base, which displaces the horizontal position of the column base and the U-shaped contact member relative to the foundation, The position adjustment jig body and the pair of tip portions of the U-shaped contact member are connected by a pair of connecting members, The position adjustment jig body is, The foundation contact portion that contacts the aforementioned foundation, A column base contact portion that is extendable and retractable in a direction away from the aforementioned foundation contact portion, A column base position adjustment jig characterized by having a rotating part provided between the foundation contact part and the column base contact part, connected to a pair of connecting members, and rotatable about a rotation axis extending in the vertical direction.

2. The column base position adjustment jig according to claim 1, characterized in that the foundation contact portion is an angle material that contacts the upper surface of the foundation and an opposing surface perpendicular to the upper surface of the foundation and facing the column base.

3. The column base contact portion is a fastening member having a rotatable head and a threaded portion extending from the head, and the distance between the foundation and the column base is changed by the head being rotated, thereby displacing it in a direction away from the foundation contact portion. This is the column base position adjustment jig according to claim 1.

4. The column base position adjustment jig according to claim 3, characterized in that the head of the column base contact portion has a protruding curved surface that protrudes toward the column base.

5. The rotating shaft is a fastening member having a rotatable head and a threaded portion extending from the head, located on a straight line connecting the foundation and the contact portion of the foundation contact portion, and the contact portion of the column base and the contact portion of the column base contact portion. The column base position adjustment jig according to claim 1, characterized in that the rotating part rotates the U-shaped contact member and the column base in contact with the U-shaped contact member via the connecting member by rotating the head of the rotating part.

6. The column base position adjustment jig according to claim 1, characterized in that the U-shaped contact member has a detachable groove that allows a pair of the connecting members to be attached and detached.

7. The column base position adjustment jig according to claim 1, characterized in that the U-shaped contact member has a permanent magnet that can be attracted to the column base, and the contact surface contacts the side surface via the permanent magnet.

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