Manufacturing method and device for buckling restraint brace

Abstract

To provide a manufacturing method and device for a buckling restraint brace that is easy to manufacture and has high work safety.SOLUTION: The manufacturing method for a buckling restraint brace includes: a placing step in which a steel core material C is placed horizontally on a support member 30 (10, 20A, 20B); an insertion step in which a steel pipe R, which is the restraint material, is moved and the core material C is inserted into the steel pipe R; and a manufacturing step in which measures are taken to prevent the core material C and the steel pipe R from shifting to produce a buckling restraint brace B, and then the buckling restraint brace B is removed from the support member 30.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a method and apparatus for fabricating a buckling restrained brace. [Background technology]

[0002] Buckling restrained braces have been used as braces that form building frames (column-beam frames, roof frames, etc.). Buckling restrained braces come in various forms, and one example is one in which a core material that absorbs earthquake energy is disposed inside a steel pipe that is a restraining material. The core material can be in the form of a flat plate, a cross-shaped cross section, a flat plate with cross-shaped cross sections only at both ends, or a steel pipe.

[0003] When manufacturing a buckling restraint brace by inserting a core material into a steel pipe, the manufacturing method of inserting the core material into the steel pipe while both the steel pipe and the core material are standing upright requires work space in the vertical direction (vertical direction or diagonal direction from vertical), and requires the assembly of scaffolding and working at height, which poses issues in manufacturing effort and work safety. These issues become even more pronounced when manufacturing a long buckling restraint brace, for example, about 5 to 8 meters.

[0004] Here, Patent Document 1 proposes a method for manufacturing a buckling restrained brace including a steel pipe, a main body cover for closing the end of the steel pipe, a first core material inserted into the steel pipe with an end protruding from the main body cover to the outside of the steel pipe, a second core material welded to the end of the first core material, an unbond material arranged on the surface of the first core material, and a filler material filled inside the steel pipe. This manufacturing method includes a first step of arranging the first core material on a first jig, welding the second core material to the first core material, and providing the unbond material on the first core material, and a second step of moving the first jig on which the core material with the unbond material arranged and the second jig on which the steel pipe is arranged to be relatively close to each other, and inserting the core material into the steel pipe on the second jig, and in the first step, the second core material is welded to the first core material, and then the core material is rotated on the first jig, and then the unbond material is provided on the first core material. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2022-118602 A Summary of the Invention [Problem to be solved by the invention]

[0006] According to the manufacturing method of the buckling restrained brace described in Patent Document 1, the first jig and the second jig, on which the core material and the steel pipe are respectively arranged, are moved close to each other and the core material is inserted into the steel pipe, which solves various problems associated with the manufacturing method in which the core material is inserted into the steel pipe in an upright state as described above. However, since the second core material is welded to the first core material, the core material is rotated on the first jig, and an unbond material is provided on the first core material before the core material is inserted into the steel pipe, the manufacturing process requires a large number of steps and there are problems with manufacturing efficiency.

[0007] The present invention has been made in consideration of the above problems, and aims to provide a method and apparatus for manufacturing a buckling restraint brace that is easy to manufacture and has high work safety. [Means for solving the problem]

[0008] In order to achieve the above object, one aspect of a method for manufacturing a buckling restrained brace according to the present invention includes: A placing step of placing a steel core material laterally on the support member; an insertion process of moving a steel pipe as a restraining material and inserting the core material into the steel pipe; The method includes a manufacturing process of manufacturing a buckling restraint brace by taking measures to prevent displacement between the core material and the steel pipes, and retrieving the buckling restraint brace from the multiple support members.

[0009] According to this aspect, a steel core material is placed horizontally on top of the support members, the steel pipe which serves as the restraint material is moved to insert the core material into the steel pipe, and measures are taken to prevent the core material and the steel pipe from slipping, after which the buckling restraint brace is retrieved from the multiple support members, thereby realizing a method of manufacturing a buckling restraint brace that is easy to manufacture and has high work safety.

[0010] Here, the steel pipe includes not only circular steel pipe but also square steel pipe. The core material may be in the form of a flat plate, a cross-shaped cross section, a flat plate with cross-shaped cross sections only at both ends, or a steel pipe. When the core material is a steel pipe, it becomes a double steel pipe buckling restraint brace.

[0011] Another aspect of the method for manufacturing a buckling restrained brace according to the present invention is to The steel pipe is loaded onto a trolley, and in the insertion process and the manufacturing process, the trolley is moved to insert the core material and a portion of the support member that directly supports the core material into the steel pipe, thereby recovering the buckling restraint brace.

[0012] According to this embodiment, the steel pipe is loaded onto a trolley, and the trolley is moved to insert the core material and part of the support member that directly supports the core material into the steel pipe, and the buckling restraint brace is then retrieved. This makes it possible to achieve efficient production while reducing the burden involved in the insertion work of inserting the core material into the steel pipe, even when the core material is heavy.

[0013] In another aspect of the method for manufacturing a buckling restrained brace according to the present invention, The support member is The device comprises a first support leg, a second support leg, and a third support leg, which are a plurality of support legs standing in sequence at intervals in a straight line, and a cross member supported by each of the support legs, the cross member having a first region between the first support leg and the second support leg, and a second region between the second support leg and the third support leg, In the placing step, the core material is placed in the second region, In the insertion step, the first support leg is temporarily removed, and the carriage is moved to insert the first region into the inside of the steel pipe, and the first support leg is returned to its original position after the first region has penetrated the steel pipe, and then the second support leg is temporarily removed and the carriage is moved to insert the second region and the core material into the inside of the steel pipe, and the second support leg is returned to its original position after the second region and the core material have penetrated the steel pipe, The manufacturing process is characterized in that the buckling restraint brace is retrieved by removing the third support leg and moving the carriage.

[0014] According to this aspect, the support member comprises a first support leg, a second support leg, and a third support leg, a first region between the first support leg and the second support leg of the cross member supported by each support leg, and a second region between the second support leg and the third support leg, and a core material is placed in the second region, and the first support leg is temporarily removed and the cart is moved to insert the first region into the interior of the steel pipe, and the first support leg is restored, and then the second support leg is temporarily removed and the cart is moved to insert the second region and the core material into the interior of the steel pipe, and the second support leg is restored, and then the third support leg is removed and the cart is moved to retrieve the buckling restraint brace.By this series of steps, efficient production can be achieved while suppressing excessive deflection of the cross member.

[0015] In another aspect of the method for manufacturing a buckling restrained brace according to the present invention, The height of the cross member relative to the support legs can be adjusted manually or automatically.

[0016] According to this embodiment, the height of the cross member can be freely adjusted either manually or automatically, so that when the steel pipe is moved to insert the core member, it is possible to align both the steel pipes of various sizes and the core member.

[0017] Here, the automatic height adjustment can be performed by a method in which a cross member is supported by one or more hydraulic jacks or the like, and the height is adjusted while the cross member is raised and lowered by driving the hydraulic jacks or the like.

[0018] In another aspect of the method for manufacturing a buckling restrained brace according to the present invention, The support legs are provided with scales indicating height levels, In the placing step, The height of the cross member is adjusted based on the scale so that the height level of the core of the steel pipe when it is placed on the trolley is the same as the height level of the core of the core material when it is placed on the cross member.

[0019] According to this embodiment, the support legs are provided with scales indicating the height level, and the height of the cross member is adjusted based on the scales so that the height level of the core of the steel pipe placed on the trolley and the height level of the core of the core material placed on the cross member are the same, which is preferable because it makes it possible to easily align the two with a simple device configuration.

[0020] Another aspect of the method for manufacturing a buckling restrained brace according to the present invention is to A friction reduction means for reducing a frictional force when the cart moves in a state where the inner surface of the steel pipe and the lower end of the core material or the lower end of the cross member are in contact with each other by being inserted into the inside of the steel pipe is removably provided inside the steel pipe; The method is characterized in that after the buckling restraint brace is manufactured, the friction reduction means is removed from inside the steel pipe.

[0021] According to this aspect, by providing friction reduction means inside the steel pipe that reduces the frictional force (dynamic frictional force) between the inner surface of the steel pipe and the lower end of the core material or the lower end of the cross member, smooth movement of the bogie can be achieved and deterioration or damage due to sliding between the steel pipe and the core material, etc. Also, by providing the friction reduction means inside the steel pipe so that it can be removed freely, it is possible to ensure that the friction reduction means can be easily removed after the buckling restraint brace is manufactured.

[0022] Examples of friction reduction means include a roller unit equipped with multiple rollers (with strings attached, the strings extending beyond the outside of the steel pipe), a cloth (non-woven or woven) sheet, or a resin sheet (with the ends of the sheet extending beyond the outside of the steel pipe), etc.

[0023] In another aspect of the method for manufacturing a buckling restrained brace according to the present invention, The core material has a cross-shaped cross section perpendicular to its longitudinal direction, The support legs are formed of square pipes, The cross member is a pair of angle steel or channel steel shaped steel members detachably attached to the square pipe, The vertical pieces extending vertically of the cross shape are accommodated in the gap between the pair of shaped steel materials, and the horizontal pieces extending horizontally of the cross shape are placed on the flanges of the pair of shaped steel materials.

[0024] According to this embodiment, in a configuration in which the core material has a cross-shaped cross section, a part (vertical piece) of the core material is accommodated in the gap between a pair of cross members consisting of shaped steel materials which are detachably attached to support legs consisting of square pipes, and the other part (horizontal piece) of the core material is placed on the pair of shaped steel materials.This makes it possible to place the core material with a cross-shaped cross section, which is difficult to place in a stable position, in a stable position relative to the cross members.

[0025] In addition, one aspect of the manufacturing device for a buckling restrained brace according to the present invention is A support member on which the steel core material is placed sideways; and a cart that carries a steel pipe, which is a restraint material, and moves around to insert the core material placed on the support member into the steel pipe to produce a buckling restraint brace.

[0026] According to this aspect, the device has a simple configuration and excellent manufacturability, by having multiple support members on which the steel core material is placed horizontally and a cart that carries the steel pipe and inserts the core material into the steel pipe while moving. Here, the cart has a platform and wheels, and can be either manually moved or self-propelled.

[0027] In another aspect of the manufacturing apparatus for a buckling restrained brace according to the present invention, The support member is The device comprises a first support leg, a second support leg, and a third support leg, which are a plurality of support legs standing in sequence at intervals in a straight line, and a cross member supported by each of the support legs, the cross member having a first region between the first support leg and the second support leg, and a second region between the second support leg and the third support leg, The height of the cross member relative to the support legs can be adjusted manually or automatically.

[0028] According to this embodiment, the support member has a first support leg, a second support leg, and a third support leg, and a first region and a second region of the cross member supported by each support leg, and the height of the cross member can be freely adjusted either manually or automatically, thereby enabling efficient production while suppressing excessive bending of the cross member, and resulting in an apparatus that can align both steel pipes of various sizes and core materials when moving the steel pipe to insert the core material.

[0029] Another aspect of the manufacturing apparatus for a buckling restrained brace according to the present invention is to The present invention is characterized in that a friction reduction means for reducing the frictional force when the bogie moves while the inner surface of the steel pipe is in contact with the lower end of the core material or the lower end of the cross member by being inserted into the inside of the steel pipe is removably provided inside the steel pipe.

[0030] According to this aspect, friction reduction means for reducing the frictional force (dynamic frictional force) between the inner surface of the steel pipe and the lower end of the core material or the lower end of the cross member is provided inside the steel pipe, thereby enabling smooth movement of the bogie and suppressing deterioration or damage caused by sliding between the steel pipe and the core material, etc. Also, since the friction reduction means is provided inside the steel pipe so as to be freely removable, it is possible to ensure that the friction reduction means can be easily removed after the buckling restraint brace is manufactured. Effect of the Invention

[0031] As can be understood from the above description, the method and apparatus for manufacturing a buckling restrained brace of the present invention makes it possible to manufacture a buckling restrained brace with excellent manufacturability and high work safety. [Brief description of the drawings]

[0032] [Figure 1] FIG. 13 is a side view of an example support member forming an apparatus for fabricating a buckling restrained brace according to embodiments. [Diagram 2] 2 is a view taken along the line II-II of FIG. 1, and is a vertical cross-sectional view of an intersection between a support leg and a cross member. [Diagram 3] FIG. 2 is an enlarged view of the support leg, together with a hydraulic jack for raising and lowering the cross member. [Figure 4] 4 is a view taken along the line IV-IV in FIG. 1, and is a vertical cross-sectional view of a general portion of a cross member, simulating a state in which a core member is placed. [Figure 5A] FIG. 13 is a side view of an example of a cart that forms part of a manufacturing apparatus for a buckling restraint brace according to an embodiment, showing the state in which a steel pipe is placed on it. [Figure 5B] 5B is a view taken in the direction of the arrow B in FIG. 5A, and is a front view of a cart on which a steel pipe is placed. [Figure 6] FIG. 1 is a process diagram of an example of a method for manufacturing a buckling restrained brace according to an embodiment. [Figure 7] Continuing from FIG. 6, this is a process diagram of an example of a method for producing a buckling restrained brace according to an embodiment. [Figure 8] 7, this is a process diagram of an example of a method for producing a buckling restrained brace according to an embodiment. [Figure 9] 8, this is a process diagram of an example of a method for producing a buckling restrained brace according to an embodiment. [Figure 10] Continuing from FIG. 9, this is a process diagram of an example of a method for producing a buckling restrained brace according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, a method and an apparatus for manufacturing a buckling restrained brace according to an embodiment will be described with reference to the accompanying drawings. In this specification and the drawings, substantially identical components are designated by the same reference numerals to avoid redundant description.

[0034] [Method and device for manufacturing buckling restrained braces according to the embodiment] An example of a method and an apparatus for manufacturing a buckling restrained brace according to the embodiment will be described with reference to Figs. 1 to 10. Fig. 1 is a side view of an example of a support member forming the manufacturing apparatus for a buckling restrained brace according to the embodiment. Fig. 2 is a view taken along the line II-II in Fig. 1, showing a vertical cross-section of an intersection between a support leg and a cross member. Fig. 3 is an enlarged view of the support leg, showing a hydraulic jack for raising and lowering the cross member. Fig. 4 is a view taken along the line IV-IV in Fig. 1, showing a vertical cross-section of a general part of the cross member, simulating a state in which a core member is placed. Fig. 5A is a side view of an example of a carriage forming the manufacturing apparatus for a buckling restrained brace according to the embodiment, showing a state in which a steel pipe is placed on it, and Fig. 5B is a view taken along the line B in Fig. 5A, showing a front view of the carriage on which the steel pipe is placed. Figs. 6 to 10 are, in order, process diagrams of an example of a method for manufacturing a buckling restrained brace according to the embodiment.

[0035] As shown in Figure 1, the support member 30 that constitutes the buckling restraint brace manufacturing apparatus 70 (see Figure 6, etc.) includes a first support leg 10A, a second support leg 10B, and a third support leg 10C (all of which are examples of support legs and support members) that stand up in sequence at intervals in a linear manner, and a cross member 20 (another example of a support member) supported by each support leg 10.

[0036] The cross member 20 has a first region 20A between the first support leg 10A and the second support leg 10B, and a second region 20B between the second support leg 10B and the third support leg 10C.

[0037] The support leg 10 is formed of a square pipe, and the cross member 20 is formed of a pair of angle irons having a web 21 and a flange 22, as shown in Figs.

[0038] 2 and 4, bolt holes (not shown) in the webs 21 of each angle iron 20 are aligned with bolt holes (not shown) in a pair of side surfaces of the square pipe 10, bolts are inserted into the respective interconnected bolt holes, and the pair of angle irons 20 are bolted together with bolt nuts 25, thereby removably fixing the pair of angle irons 20 to the support leg 10. Here, the cross members 20 may be other shaped steel members such as channel steel, in addition to the angle irons shown in the drawings.

[0039] As shown in Figure 4, the steel core material C in the illustrated example has a cross-shaped cross-section perpendicular to its longitudinal direction, with a lower vertical piece C2 extending vertically of the cross-shaped cross section being accommodated in the gap between a pair of angle irons 20, and a horizontal piece C1 extending horizontally of the cross-shaped cross section being placed on the flanges 22 of the pair of angle irons 20.

[0040] In addition, the core material C that forms the buckling restraint brace B may have a cross-shaped cross-sectional shape as a whole as in the illustrated example, or it may have a flat plate shape, a flat plate with cross-shaped cross-sectional shapes only at both ends, or a shape made of steel pipes.

[0041] Returning to Figure 1, the distance t1 between two adjacent support legs 10 among the three support legs 10 is set to be longer than the longitudinal length t2 of the steel pipe R shown in Figure 5A and the longitudinal length t3 of the core material C shown in Figure 7.

[0042] The length of the buckling restraint brace B to be produced (see Figure 9) is determined by the length t3 of the core material C, and since length t3 is long, for example, about 5 to 7 m, the overall length of the cross member 20 will be long, at 10 m or more. However, since the cross member 20 is supported by three support legs 10 as in the illustrated example, excessive deflection of the cross member 20 is eliminated.

[0043] The specifications (including size) of the pair of angle irons that form the cross member 20 are set to satisfy the load-bearing capacity, allowable deflection, etc., depending on the weight of the core material C that it supports and the length of the separation t1 of the support legs 10, which is set by the length t3 of the core material C.

[0044] As described below, the method of manufacturing the buckling restrained brace involves placing a core material C in the second region 20B of the cross member 20, and then moving a steel pipe R mounted on a bogie 50 from the first region 20A side to insert the core material C into the steel pipe R. When inserting the core material C, multiple hydraulic jacks 40 (two in the illustrated example) are installed at two points below the cross member 20 during height adjustment to adjust the height of the cross member 20 in the X1 direction so that the height level of the core of the core material C placed in the second region 20B is the same as the height level of the core of the steel pipe R mounted on the bogie 50.

[0045] As shown in Fig. 3, a scale 15 indicating the height level is provided on the side of the support leg 10. When adjusting the height of the cross member 20, the bolts and nuts 25 are removed from each support leg 10, and the two hydraulic jacks 40 are driven to raise and lower the long cross member 20. Here, it is preferable that the pair of angle irons 20 are temporarily fixed at multiple points on both sides so that they can be raised and lowered as a unit by the hydraulic jacks 40.

[0046] Although not shown in the figures, the cross member 20 may be equipped with a laser distance meter to automatically measure the height from the floor surface, and the height level of the cross member 20 may be adjusted with reference to the measurement data of the laser distance meter according to the height level of the core of the steel pipe R, which is determined by the height of the cart 50 and the cross-sectional dimensions of the steel pipe R. Also, the hydraulic jack 40 may take in the measurement data of the laser distance meter and automatically adjust the height level of the cross member 20 while automatically driving according to the height level of the core of the steel pipe R. Furthermore, if the weight of the cross member 20 is not large and manual height adjustment is possible, the height may be adjusted manually by one or more workers.

[0047] As shown in Figures 5A and 5B, the trolley 50 places the steel pipe R, which serves as the restraint material, and moves close to the core material C placed on the cross member 20, so that the core material C is inserted into the steel pipe R as the trolley 50 moves.

[0048] The cart 50 may be either of a type that can be manually pushed and moved, or of a self-propelled type.

[0049] A friction-reducing sheet 60 (one example of a friction-reducing means) is housed inside the steel pipe R mounted on the cart 50, and both ends of the friction-reducing sheet 60 extend from both ends of the steel pipe R. The friction-reducing sheet is made of a cloth (nonwoven fabric, woven fabric) sheet or a resin sheet. Here, the friction-reducing means may be a roller unit equipped with multiple rollers, in addition to the sheet in the illustrated example, and a string may be attached to the end of the roller unit and extended to the outside of the steel pipe R.

[0050] In this way, by providing the friction-reducing sheet 60 inside the steel pipe R in a removable manner, it is possible to reduce the frictional force (dynamic frictional force) that may occur between the inner surface of the steel pipe R and the lower end of the core material C or the lower end of the cross member 20, thereby enabling the bogie 50 to move smoothly and suppressing deterioration and damage due to sliding between the steel pipe R and the core material C or the cross member 20. Furthermore, because the end of the friction-reducing sheet 60 protrudes outside the steel pipe R and is removable, it is possible to ensure that the friction-reducing sheet 60 can be easily removed after the buckling restraint brace B is manufactured.

[0051] Next, a method for manufacturing a buckling restrained brace according to an embodiment will be described with reference to FIGS.

[0052] First, as shown in FIG. 6, the first support leg 10A located on the left side in FIG. 1 is temporarily removed, the carriage 50 is moved in the Y1 direction, and the first region 20A of the cross member 20 is inserted into the steel pipe R.

[0053] When the trolley 50 moves, the second region 20B of the cross member 20 is supported at two points by the second support leg 10B and the third support leg 10C, and the first region 20A is supported at two points by the second support leg 10B and the inner surface of the steel pipe R, so there is no risk of the cross member 20 bending excessively.

[0054] In addition, a friction reduction sheet 60 is provided below the inside of the steel pipe R, and the first region 20A of the cross member 20 slides on the inner surface of the steel pipe R together with the friction reduction sheet 60, eliminating direct sliding between the steel pipe R and the cross member 20 and ensuring smooth movement of the trolley 50 on which the steel pipe R is placed.

[0055] 7, after the entire steel pipe R enters the first region 20A and the first region 20A penetrates the steel pipe R, the cart 50 is stopped and the first support leg 10A is returned to its original position. In other words, the three-point support structure of the cross member 20 by the three support legs 10 is restored.

[0056] 7, the core material C is placed in the second region 20B of the cross member 20 (placement step). Here, the core material C may be placed in the second region 20B prior to the movement of the steel pipe R to the first region 20A.

[0057] Next, as already explained with reference to Fig. 3, the bolt connections of the cross members 20 to the support legs 10 are released and the load is transferred to the two hydraulic jacks 40 so that the height level of the core of the core member C is the same as the height level of the core of the steel pipe R mounted on the cart 50, and the height of the cross member 20 is adjusted by raising and lowering the cross member 20 in the X1 direction using the hydraulic jacks 40. Here, since the steel pipe R supported by the cart 50 can also support the cross member 20 in addition to the two hydraulic jacks 40, there is no risk of the cross member 20 being excessively deflected when transferring the load to the hydraulic jacks 40 and adjusting the height.

[0058] Next, as shown in Figure 8, the second support leg 10B is temporarily removed and the cart 50 is moved in the Y2 direction, thereby inserting the second region 20B of the cross member 20 and the core material C placed on it into the inside of the steel pipe R mounted on the cart 50.

[0059] Here, although the second support leg 10B is removed, in the state shown in Figure 8, the cross member 20 is supported by the two first support legs 10A and the third support leg 10C, and the steel pipe R mounted on the cart 50 that moves between them, so there is no risk of the cross member 20 bending excessively.

[0060] In addition, the lower end of the lower vertical piece C2 of the core material C located at the lowest end comes into contact with the friction reduction sheet 60 inside the steel pipe R, eliminating direct sliding contact between the inner wall of the steel pipe R and the lower end of the core material C, ensuring smooth movement of the cart 50 on which the steel pipe R is placed.

[0061] 9, after the entire steel pipe R enters the second region 20B and the core material C penetrates the steel pipe R, the carriage 50 is stopped and the second support leg 10B is returned to its original position. In other words, the three-point support structure of the cross member 20 by the three support legs 10 is restored (this is the insertion process).

[0062] Next, as shown in Figure 9, weld holes (not shown) are opened in part of the outer periphery of the steel pipe R, and a part of the vertical piece C2 of the core material C and a part of the steel pipe R are connected by a plug weld W (an example of a slip-prevention measure) through the weld hole to produce a buckling restraint brace B in which relative longitudinal displacement between the core material C and the steel pipe R is prevented.

[0063] After the buckling restraint brace B has been manufactured, the third support leg 10C is removed and the dolly 50 is moved in the Y3 direction, as shown in FIG. 10, to retrieve the buckling restraint brace B.

[0064] Finally, the friction reduction sheet 60 interposed between the core material C and the steel pipe R is pulled out and removed, completing the manufacturing process (this concludes the manufacturing process).

[0065] According to a manufacturing method using the illustrated manufacturing apparatus 70, the buckling restraint brace B can be manufactured with excellent manufacturability and high work safety.

[0066] As a variation of the method for manufacturing the buckling restrained brace according to the embodiment, the manufacturing device 70 equipped with the cart 50 may not be used, and the steel pipes R and the buckling restrained brace B may be moved manually by multiple workers, with the rest of the process being the same as the above series of steps in which the buckling restrained brace B is manufactured and retrieved. If the buckling restrained brace B is relatively short in length and relatively small in cross-sectional dimension, and therefore relatively light in weight, the cart 50 is not necessary, and it can be manufactured by having multiple workers move the steel pipes R, etc., sideways manually.

[0067] In addition, the present invention is not limited to the configuration shown here, and may be implemented in other embodiments in which other components are combined with the configurations and the like of the above-mentioned embodiment. In this regard, the present invention may be modified within the scope of the gist of the present invention, and may be appropriately determined according to the application form. [Explanation of symbols]

[0068] 10: Support leg (square pipe) 10A: First support leg (support leg, square pipe, support member) 10B: Second support leg (support leg, square pipe, support member) 10C: 3rd support leg (support leg, square pipe, support member) 15: Scale 20: Cross member (angle iron, support member) 20A: First region (support member) 20B: Second region (support member) 21: Web 22: Flange 25: Bolts and nuts 30: Support member 40: Hydraulic jack 50: Cart 60: Friction reduction means (friction reduction sheet) 70: Manufacturing equipment (manufacturing equipment for buckling restraint braces) C: Core material C1: Horizontal piece C2: Vertical piece R: Steel pipe (restraint material) W: Plug weld (slip prevention measure) B: Buckling restraint brace

Claims

1. A placing step of placing a steel core material laterally on the support member; an insertion process of moving a steel pipe as a restraining material and inserting the core material into the steel pipe; a manufacturing method for a buckling restrained brace, comprising: a manufacturing step of manufacturing a buckling restrained brace by taking measures to prevent shear between the core material and the steel pipes, and recovering the buckling restrained brace from the support members.

2. 2. The method for manufacturing a buckling restrained brace as described in claim 1, characterized in that the steel pipe is loaded onto a cart, and in the insertion process and the manufacturing process, the cart is moved to insert the core material and a portion of the support member that directly supports the core material into the steel pipe, and the buckling restrained brace is retrieved.

3. The support member is The device comprises a first support leg, a second support leg, and a third support leg, which are a plurality of support legs standing in sequence at intervals in a straight line, and a cross member supported by each of the support legs, the cross member having a first region between the first support leg and the second support leg, and a second region between the second support leg and the third support leg, In the placing step, the core material is placed in the second region, In the insertion step, the first support leg is temporarily removed and the carriage is moved to insert the first region into the inside of the steel pipe, and the first support leg is returned to its original position after the first region has penetrated the steel pipe, and then the second support leg is temporarily removed and the carriage is moved to insert the second region and the core material into the inside of the steel pipe, and the second support leg is returned to its original position after the second region and the core material have penetrated the steel pipe, 3. The method for manufacturing a buckling restrained brace according to claim 2, wherein in the manufacturing step, the buckling restrained brace is retrieved by removing a third support leg and moving the carriage.

4. 4. A method for manufacturing a buckling restraint brace as described in claim 3, wherein the cross member is manually or automatically adjustable in height relative to the support leg.

5. The support legs are provided with scales indicating height levels, In the placing step, 5. A method for manufacturing a buckling restraint brace as described in claim 4, characterized in that the height of the cross member is adjusted based on the scale so that the height level of the core of the steel pipe when it is placed on the cart is the same as the height level of the core of the core material when it is placed on the cross member.

6. A friction reduction means for reducing a frictional force when the carriage moves in a state where the inner surface of the steel pipe and the lower end of the core material or the lower end of the cross member are in contact with each other by being inserted into the inside of the steel pipe is removably provided inside the steel pipe; 4. The method of claim 3, further comprising removing the friction reducing means from inside the steel pipe after the buckling restrained brace is fabricated.

7. The core material has a cross-shaped cross section perpendicular to its longitudinal direction, The support legs are formed of square pipes, The cross member is a pair of angle steel or channel steel shaped steel members detachably attached to the square pipe, 4. A method for manufacturing a buckling restraint brace as described in claim 3, characterized in that the vertical pieces extending in the vertical direction of the cross-shape are accommodated in the gap between the pair of shaped steel materials, and the horizontal pieces extending in the horizontal direction of the cross-shape are placed on the flanges of the pair of shaped steel materials.

8. A support member on which the steel core material is placed sideways; and a cart that carries a steel pipe as a restraint material and moves around to insert the core material placed on the support member into the steel pipe to produce a buckling restraint brace.

9. The support member is The device comprises a first support leg, a second support leg, and a third support leg, which are a plurality of support legs standing in sequence at intervals in a straight line, and a cross member supported by each of the support legs, the cross member having a first region between the first support leg and the second support leg, and a second region between the second support leg and the third support leg, 9. The apparatus for manufacturing a buckling restraint brace according to claim 8, wherein the height of the cross member is manually or automatically adjustable relative to the support leg.

10. The buckling restraint brace manufacturing device according to claim 9, characterized in that a friction reduction means for reducing the frictional force when the bogie moves with the inner surface of the steel pipe in contact with the lower end of the core material or the lower end of the cross member by being inserted into the inside of the steel pipe is removably provided inside the steel pipe.

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