Raising jig and raising method

Abstract

This invention provides a raising jig that allows for the raising of the main beams that make up the structure of a building, thereby enabling more efficient construction work. [Solution] The raising jig 1 is attached to the first column B1 and the second column B2 that constitute the building structure, respectively, and raises the main beam B3 that connects the columns. The raising jig 1 comprises a first raising member 10 attached to the upper part of the first column B1 and a second raising member 20 attached to the upper part of the second column B2. The raising member 10 (20) has a raising body 11 that is supported by the column and supports the end of the main beam B3 from below, a column attachment part 12 that is fixed to the upper part of the column, a main beam attachment part 13 that fixes the end of the main beam, and a column position adjustment part 15 that is configured to be movable toward the column relative to the raising body and can abut against the side surface of the column. The raising jig 1 adjusts the position of the column by pushing the column position adjustment part 15 toward the column relative to the raising body 11.

Description

Technical Field

[0001] The present invention relates to a lifting jig and a lifting method, and particularly to a lifting jig and a lifting method for lifting a large beam that constitutes the building frame and connects columns to each other.

Background Art

[0002] Conventionally, in a building construction site, in order to allow trucks and cranes to pass through and to secure a space for stopping trucks and cranes, a lifting jig for lifting a large beam that constitutes the building frame is known. That is, when a large beam is temporarily installed first in building construction, trucks, cranes, etc. cannot pass due to interference of the large beam. By using the above-mentioned lifting jig, the large beam can be temporarily placed at a high position. Specifically, by fixing a lifting jig to the upper part of each of the first column and the second column and temporarily placing the large beam on the left and right lifting jigs, a space for trucks and cranes to pass through can be secured, and a space for stopping trucks and cranes can also be secured. For example, a beam temporary placement jig such as that of Patent Document 1 can be used.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Incidentally, while using the raising jig described above allows for the temporary placement of the main beam at a higher position in relatively narrow construction sites, the weight of the main beam sometimes causes the first and second columns supporting it to tilt slightly inward, reducing the distance between the columns. In other words, the first and second columns shift from their original vertical positions, which can affect subsequent building construction. This, in turn, can impact subsequent construction work. Therefore, there was a need for a raising jig that could raise the main beams to a higher position and temporarily place them there, while minimizing the impact on the building structure caused by the temporary placement of the main beams.

[0005] The object of the present invention is to provide a raising jig and a raising method that can raise the main beams that constitute the structure of a building, thereby enabling efficient construction work on the building. Another object of the present invention is to provide a raising jig and raising method that can raise and temporarily place a main beam while minimizing the impact on the structural frame caused by the temporary placement of the main beam. [Means for solving the problem]

[0006] The aforementioned problem is addressed by the raising jig of the present invention, which is attached to a first column and a second column that constitute the frame of a building, respectively, and is used to raise the main beam that connects the columns, comprising: a first raising member attached to the upper part of the first column and positioned to extend laterally from the upper part of the first column; and a second raising member attached to the upper part of the second column and positioned to extend laterally from the upper part of the second column, wherein each raising member is supported by the column and lowers the end of the main beam The raising jig comprises a raising body that supports from the side, a column attachment part provided on the raising body for fixing to the upper part of the column, a main beam attachment part provided at the upper end of the raising body for fixing the end of the main beam, and a column position adjustment part provided on the raising body, configured to be movable from the raising body toward the column relative to the raising body, and capable of contacting the side surface of the column. The raising jig is solved by adjusting the position of the column by pushing the column position adjustment part toward the column relative to the raising body. With the above configuration, a raising jig can be realized that allows for raising the main beams that make up the structure, enabling more efficient construction work. Specifically, the above-mentioned raising jig comprises a first raising member and a second raising member, and is configured to adjust the position of the column by pushing out the column position adjustment parts toward the column. As a result, even if the first and second columns are slightly tilted inward due to the weight of the main beam, the position of each column can be adjusted vertically.

[0007] In this case, the raising member is attached to a column connecting portion that protrudes from the side surface of the column body of the column, the raising body is placed on the upper surface of the column connecting portion, the column mounting portion is attached to a mounting portion provided on the upper surface of the column connecting portion, and the column position adjustment portion is configured to be able to abut against the side surface of the column body. With the above configuration, a height-raising member can be fixed to a column having a column connection section, and the main beam can be temporarily placed at a higher position using the height-raising member. Furthermore, if the column tilts inward due to the weight of the main beam, the column position adjustment section can be used to fine-tune the position of the column.

[0008] In this case, the column position adjustment section is provided between the column mounting section and the main beam mounting section in the vertical direction and includes an extension member extending from the raising body, a hollow member provided at the extension end of the extension member and extending in the direction toward the column from the extension end, and a position adjustment member supported by the hollow member, inserted into the interior of the hollow member, and capable of contacting the side surface of the column. The raising jig adjusts the position of the column by pushing the position adjustment member toward the column relative to the hollow member. With the above configuration, the raising jig can adjust the position of the column by pushing the position adjustment member toward the column relative to the hollow member provided on the raising body, thereby correcting the column's tilt.

[0009] In this case, a screw hole is formed inside the hollow member, and the position adjustment member is a position adjustment bolt that screws into the screw hole formed in the hollow member, and is configured to contact the side surface of the column and push out the column by changing the screw position relative to the screw hole. With the above configuration, the raising jig can push out the column by changing the screwing position of the position adjustment bolts relative to the hollow member (screw hole), allowing for precise adjustment of the column's position.

[0010] In this case, the raising body has a plate-shaped web extending in the vertical direction, an upper flange provided at the upper end of the web and projecting laterally from the web, and a lower flange provided at the lower end of the web and projecting laterally from the web, the column mounting portion is provided on the lower flange, the main beam mounting portion is provided on the upper flange, and the column position adjustment portion is provided between the upper flange and the lower flange, and is provided on the left and right so as to sandwich the web between them. With the above configuration, the position of the columns can be adjusted with greater precision by utilizing the left and right column position adjustment sections.

[0011] In this case, the raising jig is configured such that the first raising member is fixed to one end of the first column and the main beam, and the second raising member is fixed to the other end of the second column and the main beam, and the column position adjustment portion of the first raising member is pushed toward the first column, and the column position adjustment portion of the second raising member is pushed toward the second column, thereby adjusting the position of the first column and / or the second column in the vertical direction. With the above configuration, the first and second raising members can be attached to the first and second columns, respectively, and the main beams can be attached to the first and second raising members, respectively. In other words, the first and second raising members and the main beams can be integrated, and the reaction force from the second column can be used when adjusting the position of the first column. This allows for efficient fine-tuning of the position of the first column. Similarly, the position of the second column can be fine-tuned.

[0012] Furthermore, the aforementioned problems are solved by the raising method of the present invention, which is a raising method using the raising jig described above, and includes: a first mounting step of attaching the first raising member to the first column; a second mounting step of attaching the second raising member to the second column; a third mounting step of temporarily placing the main beam on the upper surfaces of the first raising member and the second raising member and attaching the main beam; a position adjustment step of pushing the column position adjustment part of the raising jig toward the column and adjusting the position of the column after the first mounting step, the second mounting step and the third mounting step; a column fixing step of fixing the vertical position of the column after the position adjustment step; and a beam connecting step of attaching the main beam so as to connect the first column and the second column after the column fixing step. The above configuration makes it possible to raise the main beams and temporarily place them in a raised position while minimizing the impact on the structural frame (columns) caused by the temporary placement of the main beams. [Effects of the Invention]

[0013] According to the lifting jig and the lifting method of the present invention, it is possible to lift the large beam constituting the building frame and efficiently perform the building construction work. In addition, it is possible to lift and temporarily place the large beam and suppress the influence on the building frame due to the temporary placement of the large beam.

Brief Description of the Drawings

[0014] [Figure 1] It is a view showing a state in which a lifting jig is fixed to columns (first column, second column) and a large beam is temporarily placed on the lifting jig. [Figure 2] It is a perspective view of the first column, the first lifting member, and the large beam. [Figure 3] It is a perspective view of the first lifting member. [Figure 4] It is a perspective view of the second lifting member. [Figure 5] It is a view showing a state in which a rotating tool is attached to the column position adjusting part of the lifting member. [Figure 6] It is a view showing the state before pushing out the position adjusting bolt. [Figure 7] It is a view showing a state in which the position adjusting bolt is pushed out and the position of the column is adjusted in the vertical direction.

Embodiments for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 7. This embodiment relates to a "lifting jig" that enables lifting of a large beam constituting a building frame and efficient performance of building construction work. It also relates to a "lifting method using a lifting jig".

[0016] <Overall Configuration> As shown in FIGS. 1 to 5, the lifting jig 1 is respectively attached to the first column B1 and the second column B2 constituting the building frame B, and is used to lift the large beam B3 that connects the columns. The raising jig 1 has the function of raising and temporarily placing the main beam B3, and the function of fine-tuning the positions of the first column B1 and the second column B2 when they tilt slightly inward due to the weight of the main beam B3.

[0017] The raising jig 1 comprises a first raising member 10 attached to the upper part of the first column B1 and positioned to protrude laterally from the upper part of the first column B1, and a second raising member 20 attached to the upper part of the second column B2 and positioned to protrude laterally from the upper part of the second column B2. The raising members 10 and 20 are assembled between the first column B1 and the second column B2, and are supported by the first column B1 and the second column B2, respectively. The raising members 10 and 20 support the main beam B3 from below, and the main beam B3 can be temporarily placed at a higher position. Note that the first raising member 10 and the second raising member 20 are common components. The following will describe "Structural Frame B," followed by a detailed explanation of the raising members 10 and 20.

[0018] <<Main body>> As shown in Figures 1 to 5, the building frame B is, for example, a structural part of a steel-framed building, and comprises a first column B1 and a second column B2 that are installed at a predetermined interval and are long in the vertical direction, and a main beam B3 that connects the first column B1 and the second column B2. If the main beam B3 is temporarily installed before the building is constructed, it will obstruct the passage of trucks, cranes, and other vehicles. Therefore, as shown in Figure 1, the main beam B3 is temporarily placed as high as possible using the raising jig 1 until the prescribed construction work is completed. If you wish to temporarily place the main beam B3 at a higher position, you can stack multiple raising jigs 1 and temporarily place it on top of the uppermost raising jig 1.

[0019] As shown in Figures 1 and 2, the first column B1 is a column having a column connecting portion B1b (column bracket). Specifically, the first column B1 comprises a vertically elongated column body B1a and column connecting parts B1b that extend in all directions from the sides of the upper portion (upper end) of the column body B1a. The column body B1a is, for example, a square steel pipe column. The column connection section B1b, also called a column bracket, is a connecting part that connects the main beam B3 and other beams, and is fixed to the side of the column body B1a by welding. The column connecting section B1b is made of a short H-shaped steel and has a plate-shaped web B1ba extending in the vertical direction, a lower flange B1bb provided at the lower end of the web B1ba, and an upper flange B1bc provided at the upper end of the web B1ba.

[0020] A mounting hole B1c (mounting portion) for fixing the first raising member 10 is formed on the surface of the upper flange B1bc. The mounting holes B1c are formed in pairs on the left and right sides in the width direction of the column connecting portion B1b. Multiple mounting holes B1c are formed on the left and right sides, spaced apart along the protruding direction of the column connecting portion B1b.

[0021] As shown in Figure 1, the second column B2 is similar to the first column B1 and comprises a column body B2a and a plurality of column connecting parts B2b. The column connection section B2b has a web B2ba, a lower flange B2bb, and an upper flange B2bc. A mounting hole B2c (mounting portion) for fixing the second raising member 20 is formed on the surface of the upper flange B2bc.

[0022] As shown in Figures 1 and 2, the main beam B3 is a beam that connects the first column B1 and the second column B2, and is formed from, for example, a long H-shaped steel beam of about 5 to 10 meters in length. The main beam B3 has a plate-shaped web B3a extending in the vertical direction, lower flanges B3b protruding from both sides from the lower end of the web B3a, and upper flanges B3c protruding from both sides from the upper end of the web B3a. A first mounting hole B3d (mounting portion) for fixing to the first raising member 10 is formed on the surface of one end of the lower flange B3b. Furthermore, a second mounting hole B3e (mounting portion) for fixing to the second raising member 20 is formed on the surface of the other end of the lower flange B3b.

[0023] The first mounting holes B3d are formed in pairs on the left and right sides in the width direction of the main beam B3. Multiple left and right first mounting holes B3d are formed at intervals along the length direction of the main beam B3. Similar to the first mounting hole B3d, a second mounting hole B3e is also formed.

[0024] As shown in Figures 1 and 2, the main beam B3 is fixed to the upper surfaces of the first raising member 10 and the second raising member 20 and temporarily placed at a high position at the construction site until the predetermined construction work is completed. Then, after the prescribed construction work is completed (after the crane installation work is completed, etc.), the main beam B3 is positioned between the first column B1 and the second column B2, and fixed to the column connection part B1b of the first column B1 and the column connection part B2b of the second column B2, respectively.

[0025] <<Raising jig (raising component)>> As shown in Figures 1 to 5, the raising jig 1 comprises a first raising member 10 and a second raising member 20. Furthermore, the raising jig 1 may also be equipped with a third raising member and a fourth raising member in order to temporarily place the main beam B3 at a higher position. In that case, the third raising member may be fixed to the upper surface of the first raising member 10, and the fourth raising member may be fixed to the upper surface of the second raising member 20. Then, the main beam B3 may be temporarily placed on the upper surfaces of the third raising member and the fourth raising member.

[0026] As shown in Figures 1 to 3, the first raising member 10 is attached to the column connecting portion B1b of the first column B1, with the first raising member 10 resting on the upper surface of the column connecting portion B1b of the first column B1. The first raising member 10 is positioned opposite the side surface of the column body B1a of the first column B1. The first raising member 10 is placed on the upper surface of the column connecting portion B1b while in contact with the side surface of the first column B1 (column body B1a). The first raising member 10 includes a raising body 11 supported by the first column B1 and supporting one end of the main beam B3 from below, a column mounting hole 12 and a main beam mounting hole 13 formed in the raising body 11, and a column position adjustment part 15 fixed to the raising body 11.

[0027] The raising body 11 is made of, for example, a short H-shaped steel and has a plate-shaped web 11a extending in the vertical direction, a lower flange 11b provided at the lower end of the web 11a and protruding from the web 11a on both sides, and an upper flange 11c provided at the upper end of the web 11a and protruding from the web 11a on both sides. The raising body 11 extends longer than the column connection part B1b and protrudes laterally from the column body B1a than the column connection part B1b.

[0028] The column mounting hole 12 is a circular through-hole and is a column mounting part for fixing to the column connecting part B1b (mounting hole B1c) of the first column B1. The column mounting holes 12 are provided on the lower flange 11b of the raising body 11 and are formed in pairs on the left and right sides in the width direction of the raising body 11. Multiple mounting holes 12 for the left and right columns are formed at intervals along the length of the raising body 11. The first raising member 10 can be fixed to the first column B1 by tightening a bolt 12a and a nut 12b with the predetermined column mounting hole 12 and the predetermined mounting hole B1c in vertical communication.

[0029] The main beam mounting hole 13 is a circular through-hole and is a main beam mounting portion for fixing to one end of the main beam B3 (first mounting hole B3d). The main beam mounting holes 13 are provided on the upper flange 11c of the raising body 11 and are formed in pairs on the left and right in the width direction of the raising body 11. Multiple mounting holes 13 for the left and right main beams are formed at intervals along the length of the raising body 11. By tightening the bolt 13a and nut 13b with the predetermined main beam mounting hole 13 and the predetermined first mounting hole B3d in vertical communication, one end of the main beam B3 can be fixed to the first raising member 10.

[0030] In a top view of the first raising member 10, the column mounting hole 12 and the main beam mounting hole 13 are located in different positions. As a result, even if the position of the mounting hole B1c differs depending on the type of the first column B1 (column connection part B1b), the first raising member 10 can be suitably fixed to the first column B1 by using the first raising member 10 upside down. Furthermore, the position at which the main beam B3 is fixed to the upper surface of the first raising member 10 can be adjusted slightly along the length of the main beam B3. Therefore, the first raising member 10 can be used upside down.

[0031] As shown in Figures 2 and 3, the column position adjustment unit 15 is fixed to the raising body 11, is configured to be movable from the raising body 11 toward the first column B1, and can abut against the side surface of the first column B1 (column body B1a). The column position adjustment section 15 is located between the column mounting hole 12 and the main beam mounting hole 13 in the vertical direction, and is positioned so as not to protrude laterally from the raising body 11.

[0032] The column position adjustment section 15 includes an extension member 16 extending downward from the bottom surface of the upper flange 11c, a hollow member 17 provided at the extension end 16a (lower end) of the extension member 16, and a position adjustment bolt 18 inserted inside the hollow member 17 and capable of contacting the side surface of the first column B1. The column position adjustment section 15 is provided between the upper flange 11c and the lower flange 11b, and is positioned on the left and right sides so as to sandwich the web 11a between them. The column position adjustment section 15 (extension member 16) may extend laterally from the web 11a or upward from the lower flange 11b.

[0033] The extension member 16 is a plate-shaped member that is fixed to the bottom surface of the upper flange 11c by welding and is positioned at the end of the upper flange 11c. The hollow member 17 is, for example, a long nut, and extends in the direction toward the first column B1 from the extension member 16. The hollow member 17 has a long hollow body 17a and a screw hole 17b formed inside the hollow body 17a.

[0034] The position adjustment bolt 18 is inserted inside the hollow member 17 and is provided so as to be able to abut against the side surface of the first column B1. Specifically, the position adjustment bolt 18 is a position adjustment member that screws into a screw hole 17b formed in the hollow member 17, and is configured to contact the side surface of the first column B1 and push out the first column B1 by changing the screw position relative to the screw hole 17b. The position adjustment bolt 18 has a long bolt body 18a, a hexagonal bolt head 18b provided at the base end of the bolt body 18a, and a bolt contact portion 18c provided at the tip of the bolt body 18a. The bolt head 18b is connected to the connection part T1 of the rotary tool T. The bolt contact portion 18c has a contact surface that can contact the side surface of the first column B1.

[0035] As shown in Figures 5 to 7, the position of the first column B1 can be adjusted by pushing the position adjustment bolt 18 toward the first column B1 relative to the hollow member 17 of the first riser member 10.

[0036] As shown in Figures 1 and 4, the second raising member 20 has the same configuration as the first raising member 10. The second raising member 20 is placed on the upper surface of the column connecting portion B2b of the second column B2 and is attached to the column connecting portion B2b. The second raising member 20 is positioned in contact with the side surface of the column body B2a of the second column B2. The second raising member 20 comprises a raising body 21, a column mounting hole 22, a main beam mounting hole 23, and a column position adjustment section 25. The raising body 21 has a web 21a, a lower flange 21b, and an upper flange 21c.

[0037] The second raising member 20 can be fixed to the second column B2 by tightening a bolt and nut so that the predetermined column mounting hole 22 and the predetermined mounting hole B2c of the second column B2 are in vertical communication. Furthermore, the other end of the main beam B3 can be fixed to the second raising member 20 by tightening a bolt and nut so that the predetermined main beam mounting hole 23 and the predetermined second mounting hole B3e of the main beam B3 are in vertical communication.

[0038] The column position adjustment section 25 includes an extension member 26, a hollow member 27, and a position adjustment bolt 28. As shown in Figure 4, the second raising member 20 can adjust the position of the second column B2 by pushing the position adjustment bolt 28 toward the second column B2 relative to the hollow member 27.

[0039] In the above configuration, as shown in Figures 1 and 2, the first raising member 10 is fixed to the first column B1 and one end of the main beam B3, and the second raising member 20 is fixed to the second column B2 and the other end of the main beam B3. This allows the main beam B3 to be raised and temporarily placed (first function). Furthermore, as shown in Figures 5 to 7, the positions of the first column B1 and the second column B2 can be adjusted vertically by pushing the column position adjustment section 15 of the first raising member 10 toward the first column B1 and pushing the column position adjustment section 25 of the second raising member 20 toward the second column B2 (second function). In other words, when the first column B1 and the second column B2 tilt slightly inward due to the weight of the main beam B3, the positions of columns B1 and B2 can be finely adjusted. More specifically, by integrating the first raising member 10, the second raising member 20, and the main beam B3, the reaction force from the second column B2 can be used to adjust the position of the first column B1. This allows for efficient and fine adjustment of the position of the first column B1. Similarly, the position of the second column B2 can be finely adjusted.

[0040] <Method for raising the height> Next, the raising method (construction method for buildings) using the raising jig 1 will be explained based on Figures 1 to 7. The method includes at least a "first installation step" for installing the first raising member 10, a "second installation step" for installing the second raising member 20, a "third installation step" for installing the main beam, a "position adjustment step" for adjusting the positions of columns B1 and B2, a "column fixing step" for fixing the vertical positions of columns B1 and B2, and a "beam connection step" for installing the main beam B3 so as to connect the first column B1 and the second column B2. A detailed explanation follows below. Regarding the construction of the building, explanations of construction processes other than those mentioned above will be omitted.

[0041] First, the worker performs the "first installation process" of attaching the first height-raising member 10 to the first column B1 (Step 1 (S1)). Specifically, as shown in Figures 1 and 2, a worker operates a crane or the like to place the first raising member 10 on the column connection part B1b of the first column B1 and then fixes the first raising member 10 in place. The worker secures the first raising member 10 to the first column B1 by tightening a bolt 12a and a nut 12b so that the predetermined column mounting hole 12 and the predetermined mounting hole B1c are in vertical communication.

[0042] Then, the worker performs the "second installation process" (S2) in which the second raising member 20 is attached to the second column B2. Specifically, as shown in Figure 1, a worker operates a crane or the like to place the second raising member 20 on the column connection part B2b of the second column B2 and fix the second raising member 20 in place. The worker secures the second raising member 20 by tightening it with bolts and nuts so that the designated column mounting hole 22 and the designated mounting hole B2c are in vertical communication with each other.

[0043] Then, the worker temporarily places the main beam B3 on the upper surfaces of the first raising member 10 and the second raising member 20, and performs the "third installation process" (S3) to install the main beam B3. Specifically, as shown in Figures 1 and 2, workers operate cranes or the like to temporarily place the main beam B3 on the raising members 10 and 20, and then fix the main beam B3 in place. The worker fixes one end of the main beam B3 (first mounting hole B3d) to the first raising member 10 (main beam mounting hole 13), and the other end of the main beam B3 (second mounting hole B3e) to the second raising member 20 (main beam mounting hole 23).

[0044] Then, the worker pushes the column position adjustment parts 15 and 25 of the raising jig 1 toward columns B1 and B2, respectively, and performs a "position adjustment process" to adjust the positions of columns B1 and B2 (S4). Specifically, as shown in Figures 5 to 7, the worker adjusts the position of the first column B1 by pushing the position adjustment bolt 18 toward the first column B1 toward the hollow member 17 of the first raising member 10. Similarly, the position of the second column B2 is adjusted by pushing the position adjustment bolt 28 toward the second column B2 toward the hollow member 27 of the second raising member 20. These operations are preferably performed using a rotary tool T. More precisely, the position adjustment bolt 28 of the second raising member 20 is pressed against the second column B2, and then the position adjustment bolt 18 of the first raising member 10 is pressed against the first column B1. By doing so, the position of the first column B1 can be adjusted vertically by utilizing the reaction force from the second column B2. The position of the second column B2 can be adjusted in the same way.

[0045] Then, the workers perform the "column fixing process" to fix the vertical positions of columns B1 and B2 (S5). For example, by having a worker connect columns B1 and B2, which have been finely adjusted to their vertical position, to other construction members, columns B1 and B2 can be permanently fixed in their vertical position.

[0046] Then, the workers perform a "beam connection process" in which they attach the main beam B3 to connect the first column B1 and the second column B2 (S6). Specifically, after completing the crane installation and other related tasks, the workers install the main beam B3 between the first column B1 (column connection section B1b) and the second column B2 (column connection section B2b), and then fix the main beam B3 to the first column B1 and the second column B2. After completing steps S1 to S6 described above, the series of work processes is finished.

[0047] The above raising method allows for the elevation of the main beam B3, which constitutes the building's structural frame B, enabling more efficient construction work. Furthermore, it minimizes the impact on structural frame B (columns B1 and B2) caused by the temporary placement of the main beam B3.

[0048] <Other> In the above embodiment, as shown in Figures 1 and 2, columns B1 and B2 are steel columns having column connecting parts B1b and B2b (column brackets), but this is not particularly limited. For example, columns B1 and B2 may not have column connecting parts B1b and B2b (column brackets). In that case, the raising members 10 and 20 can be directly fixed to the main bodies of columns B1 and B2. Alternatively, the raising members 10 and 20 can be fixed using separate brackets.

[0049] In the above embodiment, as shown in Figure 1, the first raising member 10 and the second raising member 20 are common components, but they are not particularly limited and may be slightly different in shape.

[0050] In the above embodiment, as shown in Figure 1, the first raising member 10 is fixed to the column B1 using bolts and nuts, and the main beam B3 is fixed to the first raising member 10 using bolts and nuts, but this is not particularly limited. For example, they may be fixed using connecting members such as clamps, or they may be fixed to each other by a fitting structure or the like.

[0051] In the above embodiment, as shown in Figure 5, the column position adjustment unit 15 pushes out the first column B1 by changing the screwing position of the position adjustment bolt 18, but the first column B1 may also be pushed out by other pushing means. For example, the position adjustment bolt 18 (position adjustment member) may be struck to press the position adjustment member against the first column B1.

[0052] In the above embodiments, the raising jig and raising method according to the present invention were mainly described. However, the embodiments described above are merely examples to facilitate understanding of the present invention and do not limit it. The present invention can be modified and improved without departing from its spirit, and of course, equivalents thereof are included. [Explanation of Symbols]

[0053] B. Structural frame (building structure) B1 Pillar 1 B1a Column Body B1b Column connection part B1ba Web B1bb Lower flange B1bc Upper Flange B1c Mounting hole (mounting part) B2 Pillar 2 B2a Column Body B2b Column connection part B2ba Web B2bb Lower Flange B2bc upper flange B2c Mounting hole (mounting part) B3 Beam B3a Web B3b Lower flange B3c Upper Flange B3d First mounting hole B3e Second mounting hole 1. Raising jig 10 First raising member 11. Height-raising unit 11a Web 11b Lower flange 11c Upper flange 12. Column mounting holes (column mounting section) 12a bolt 12b nut 13. Main beam mounting holes (main beam mounting section) 13a bolt 13b Nut 15 Pillar position adjustment section 16. Extended member 16a Extension end 17 Hollow member 17a hollow body 17b Screw hole 18. Position adjustment bolt (position adjustment member) 18a Bolt body 18b Bolt head 18c Bolt contact area 20 Second raising member 21 Height-raising unit 21a Web 21b Lower flange 21c Upper flange 22 Column mounting holes (column mounting section) 23. Main beam mounting holes (main beam mounting section) 25 Column position adjustment section 26. Extended member 27 Hollow member 28 Position adjustment bolt (position adjustment member) T Rotary tool (socket wrench) T1 connection

Claims

1. A raising jig attached to the first and second columns that constitute the building's frame, respectively, for raising the main beams that connect the columns, A first raising member is attached to the upper portion of the first column and is positioned to protrude laterally from the upper portion of the first column, The system comprises a second raising member attached to the upper portion of the second column and positioned to extend laterally from the upper portion of the second column, The aforementioned raising members are, A raising body supported by the aforementioned column and supporting the end of the main beam from below, The raising body is provided with a column mounting section for fixing to the upper part of the column, A main beam attachment portion is provided at the upper end of the raising body for fixing the end of the main beam, The raising body is provided with a column position adjustment part that is configured to be movable from the raising body toward the column relative to the raising body and is capable of contacting the side surface of the column, The raising jig is characterized by adjusting the position of the column by pushing the column position adjustment part toward the column relative to the raising body.

2. The raising member is attached to the column connecting portion that protrudes from the side of the column body of the column. The aforementioned raising body is placed on the upper surface of the column connecting portion, The column attachment portion is attached to the attachment portion provided on the upper surface of the column connecting portion. The raising jig according to claim 1, characterized in that the column position adjustment part is configured to be able to contact the side surface of the column body.

3. The column position adjustment unit is, In the vertical direction, it is provided between the column attachment portion and the main beam attachment portion, An extension member extending from the aforementioned raising body, A hollow member is provided at the extended end of the extension member and extends in the direction toward the column from the extended end, It has a position adjustment member that is supported by the hollow member, inserted into the interior of the hollow member, and can abut against the side surface of the column, The raising jig according to claim 1, characterized in that the position of the column is adjusted by pushing the position adjustment member toward the column relative to the hollow member.

4. A screw hole is formed inside the hollow member. The position adjustment member is A position adjustment bolt that is screwed into a screw hole formed in the hollow member, The raising jig according to claim 3, characterized in that it is configured to contact the side surface of the column and push out the column by changing the screwing position relative to the screw hole.

5. The raising body comprises a plate-shaped web extending in the vertical direction, an upper flange provided at the upper end of the web and projecting laterally from the web, and a lower flange provided at the lower end of the web and projecting laterally from the web. The column mounting portion is provided on the lower flange, The main beam attachment portion is provided on the upper flange, The raising jig according to any one of claims 1 to 4, characterized in that the column position adjustment section is provided between the upper flange and the lower flange, and is provided on the left and right sides so as to sandwich the web between them.

6. The aforementioned raising jig is, With the first raising member fixed to the first column and one end of the main beam, and the second raising member fixed to the second column and the other end of the main beam, The raising jig according to any one of claims 1 to 4, characterized in that the position of the first column and / or the second column is adjusted vertically by pushing the column position adjustment portion of the first raising member toward the first column and pushing the column position adjustment portion of the second raising member toward the second column.

7. A method for raising a height using the raising jig described in claim 1, A first mounting step involves attaching the first raising member to the first column, A second mounting step of attaching the second raising member to the second column, A third installation step involves temporarily placing the main beam on the upper surfaces of the first and second raising members, and then attaching the main beam. After the first mounting step, the second mounting step, and the third mounting step, a position adjustment step is performed in which the column position adjustment part of the raising jig is pushed toward the column and the position of the column is adjusted. After the position adjustment step, a column fixing step is performed to fix the vertical position of the column, A method for raising a height, characterized by comprising, after the column fixing step, a beam connecting step of attaching the main beam so as to connect the first column and the second column.

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