JP2008144473A - Workbench assembling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To assemble a workbench which faces a plurality of erect surfaces of a building structure, without execution of high-altitude work and in a narrow space. <P>SOLUTION: In assembling of the workbench, firstly a lower base frame 2 is formed on a pair of rails 6 laid in a work space S adjacent to the building structure A, in a manner pinching the building structure A, and lower supports 3 are erected on base columns 11 constituting the lower base frame 2, followed by connecting lower edges of a frame body 4 to upper edges of the respective lower supports 3, to thereby form an intermediate structure having a width larger than that of the building structure A and a length longer than that of the building structure. Then a beam 13b constituting the lower base frame 2, that is located close to the building structure A is detached to form the workbench 1 which is then moved toward the building structure A, followed by setting the workbench 1 so as to overlap an end of the building structure A. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for assembling a work platform such as a scaffold that is assembled in a state of surrounding a building structure.

A frame scaffold is known as this type of workbench. In general, a frame scaffolding includes a plurality of building frames as a shaft, a plurality of fabric frames as work floors, and braces as reinforcement members.
The building frame is a unit material formed in the shape of a gate (torii-shaped) from two buildings and a horizontal land installed between the upper ends of this building, on each side of the building structure under construction It is built at predetermined intervals and is assembled in multiple stages by inserting the top and bottom. Moreover, the cloth frame is spanned between the horizontal grounds of the building frame of each step.

When assembling the frame scaffolding, the building frame and the cloth frame are assembled one by one in order, and when disassembling, the building frame and the cloth frame are disassembled in order from the top to the bottom one by one (see Patent Document 1, for example).
JP 2003-120018 A

However, in assembling the above-mentioned framework scaffold, the building frame and the cloth frame are sequentially assembled on each side of the building structure, which is troublesome and requires a large work space in front of each side. There was a problem to do. In addition, it will force workers to work at heights that are the same height as or higher than the roof surface of the building structure, and assembling scaffolds that give sufficient consideration to safety by avoiding assembly work at heights. There is also a request from the field that wants a method.
Therefore, the present invention is to provide a worktable assembly method capable of assembling a worktable facing a plurality of elevations of a building structure in a small space without going through a high place work. .

In order to achieve the above object, the present invention takes the following technical means.
That is, the technical means for solving the problems in the present invention is a method of assembling a work table, on each rail of a pair of rails laid to a work space adjacent to the building structure with the building structure sandwiched therebetween. , Deploy at least two trolleys and attach a pillar to each trolley,
The root pillars located on the same rail are connected with girders, and a pair of root pillars located on the near side of the building structure and the root pillars located farthest from the building structure are connected. Are connected with beams to form a lower base frame,
Each lower pillar is erected on each root pillar,
After connecting the lower end of the frame body to the upper end of each lower column to form an intermediate structure that is wider than the building structure and has a large overall length,
Remove the beam connecting the pair of root pillars located on the near side when viewed from the building structure to form a work table,
The work table is moved toward the building structure so that the work table overlaps one end of the building structure adjacent to the work space.

According to this, first, the intermediate structure is assembled in the work space adjacent to the building structure. In assembling the intermediate structure, the lower base frame can be formed and the lower support can be assembled on the ground. Also, the frame body can be assembled on the ground, and the work of assembling the base frame, the lower support column and the frame body does not need to be performed at a high place.
Further, even in the connection between the upper end portion of the lower support column and the lower end portion of the frame body, it is not necessary for the worker to go up to the roof surface position of the building structure, thereby avoiding the work at a high place.
Then, by connecting the lower support column to the frame body in this way, a strong structure is formed in which the lower end portion of the arch type structure constituted by the frame body and the lower support column is connected by the lower base frame. Therefore, even if the beam material located on the building structure side of the lower base frame is removed to form a work table, the work table has sufficient strength.

Then, by moving the work table toward the building structure, the building structure can be surrounded by the work table.
Moreover, the said work bench | platform can be formed in the work space of the side of a building structure, and a work space is not required over the circumference | surroundings of a building structure. In addition, since the number of members is small, a large work area is not required for assembly.
Further, after the work table is overlapped with the building structure, a beam member connecting the root pillars located on the innermost side is removed from the building structure, and a pair of members along the building structure is removed. It is preferable to form a movable work table that is movable on the rail.

According to this, since the workbench has a structure as described above and has sufficient strength, even if the beam material located on the side far from the building structure is removed and the workbench becomes a mobile workbench, the workbench has sufficient strength. Have. In addition, this allows the moving work table to be moved along the building structure in the rail extending direction, so that the moving work table can be positioned at a predetermined position of the building structure.
In addition, before, during or after each of the lower struts standing on the root pillar, the upper struts are arranged at the same intervals as the lower struts standing on the root pillar, and one end of each upper strut is placed on the upper base. It is preferable that the frame body is formed by connecting with a frame.

As a result, the intermediate structure is an extremely sturdy structure in which the lower end of the rigid frame structure is formed by connecting the upper ends of the upper and lower columns connected to each other by the upper base frame. It can be.
And even when the beam material located on the building structure side is removed from the lower base frame of the intermediate structure to form a work table, the configuration of the elevation surface from which the beam material is removed is only a ramen structure. . Therefore, the strength as a work table is sufficiently maintained.
Furthermore, even when the beam material located on the side far from the building structure is removed from the work table to form a moving work table, the structure of the two vertical surfaces perpendicular to the extending direction of the pair of rails is a ramen structure. Only. Therefore, the strength as a moving work table is sufficiently maintained.

Moreover, it is preferable that the root pillars attached to the respective carriages arranged on the same rail are connected by the girder and connected by a connecting plate.
According to this, the structure of the two surfaces parallel to the extending direction of the pair of rails can be made stronger.
Furthermore, it is preferable to remove the girder after the work table is overlapped with the building structure.
Thereby, the operator can access the building structure inside the movable work table (between the pair of rails) from the outside of the pair of rails without straddling or diving.

  According to the method for assembling a work table of the present invention, it is possible to assemble a work table facing a plurality of elevations of a building structure in a small space without going through a high place work.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 12 show a first embodiment according to the present invention. As shown in FIG. 1, a work table 1 according to the present invention includes a lower base frame 2, a lower support 3 attached to the lower base frame 2, and a frame body 4 that connects the upper ends of the lower support 3. It is comprised and it is assembled as a temporary structure surrounding the building structure A such as a warehouse.
A pair of rails 6 are laid in parallel along both side surfaces of the building structure A. A rail stop 7 serving as a base end portion of the pair of rails 6 is provided in a work space S provided on the side of one end of the building structure A. The pair of rails 6 are each provided with six carriages 8 that are movable on the rails 6.

As shown in FIGS. 2 and 3, the carriage 8 includes a pair of wheels 8b that roll on a rail 6 on a main body casing 8a, and a guide roller 8c that supports the wheels 8b. In addition, a pair of vise 9 is provided on the upper portion of the main body casing 8a. A connecting tool 10 made of I-shaped steel is disposed between the pressing portions 9a of each vise 9. By tightening the vise 9, the connector 10 is fixed on the carriage 8.
As shown in FIG. 6 (a), the lower base frame 2 is formed by connecting six root pillars 11 arranged on a pair of rails 6 by a beam member 12 and a beam member 13 by being attached to a carriage 8. Has been.

Of the six root pillars 11, three are each provided on one rail 6 via a carriage 8, and the remaining three root pillars 11 are respectively provided on the other rail 6 via a carriage 8. ing. Hereinafter, in each rail 6, the root pillar 11 closest to the rail stop 7 is referred to as a first root pillar 11a, and the root pillar 11 adjacent to the first root pillar 11a is referred to as a second root pillar 11b. The root pillar 11 adjacent to the second root pillar 11b is referred to as a third root pillar 11c.
As shown in FIG. 4, the girder 12 connects the first root pillar 11a and the second root pillar 11b or the second root pillar 11b and the third root pillar 11c, and is spaced from each other. The four string members 16 are arranged in parallel and have joint flanges 15 at both ends, and the four string members 16 are connected to each other by a belly member 17.

In the present embodiment, the abdomen 17 includes an oblique member 18 inclined with respect to the chord member 16 and an orthogonal member 19 orthogonal to the chord member 16, and both ends of the oblique member 18 and the orthogonal member 19 are chord members. 16 is welded in the middle.
Both the chord material 16 and the belly material 17 are made of steel pipes having a hollow circular cross section. On the other hand, the joining flange 15 is formed of a steel disk that protrudes radially outward from the outer periphery of the chord 16. In addition, four insertion holes 15 a are formed in the joint flange 15. By fastening fasteners such as bolts through the insertion holes 15a, the joining flanges 15 superimposed on each other can be joined.

  The beam member 13 extends in a direction perpendicular to the extending direction of the rail 6 and connects the root pillar 11 on one rail 6 and the root pillar 11 on the other rail 6. The first beam member 13a that connects the first root pillar 11a of one rail 6 and the first root pillar 11a of the other rail 6 has the same configuration as the beam member 12 shown in FIG. And four string members 21 having a length corresponding to the length between the pair of rails 6, and an abdomen 22 connecting the string members 21. The second beam member 13b connecting the third root pillar 11c of one rail 6 and the third root pillar 11c of the other rail 6 has the same configuration as the first beam member 13a.

The root pillar 11 is formed of a tetra material 26 and fastened to a connector 10 fixed on the carriage 8 via a fastener such as a bolt. Thereby, the root pillar 11 is movable along the rail 6.
As shown in FIGS. 2 and 3, the tetra member 26 includes a main body 27 formed in a substantially cubic frame shape having the same side length as the interval between the four chord members 16 and 21 of the beam member 12 and the beam member 13. , And a joining plate 28 fixed to each of the four corners of each of the six surfaces of the main body 27 and capable of bolting the joining flange 15.

The main body 27 is made of a steel plate having the same length on all four sides, two main plates 29 having side recesses cut out on the inner side of the plate at the center of the four sides, and 2 of the same type as the chords 16 and 21. There are provided two sub-plates 31 that include two connecting plates 30 arranged in parallel in the same plane and are formed in the same shape as the main plate 29.
The two connecting struts 30 of the sub-plate 31 are arranged at the same interval as the two string members 16 and 21 of the beam member 12 and the beam member 13. Further, both end portions of the connecting column 30 are welded to the main plate 29 in a state of penetrating the corner portions of the main plate 29, and the joining plates 28 are fixed to the both end portions, respectively. Further, the joining plates 28 are also fixed to the corner convex portions at the four corners of the main plate 29 and the sub plate 31, respectively.

Accordingly, the tetra material 26 includes a total of 24 (6 surfaces × 4) joint plates 28, and the spacing between the four joint plates 28 on each of the six surfaces constitutes the beam member 13 and the beam member 12. It is set to the same dimension as the interval between the joining flanges 15 of the chord members 16 and 21 to be performed. Each joint plate 28 is formed with four bolt insertion holes 28 a in the same manner as the joint flange 15.
Note that a through hole 31 a such as a work cable is provided in the center of the main plate 29 and the sub plate 31.
Further, the upper ends of the root pillars 11 a to 11 c on the same rail 6 are connected by a rectangular connecting plate 32.

The lower support column 3 is configured by connecting a column member 33 and an adjustment column member 34 by a connecting member 35.
The column member 33 has the same configuration as that of the first beam member 13 a shown in FIG. 4, and includes four chord members 37 having a predetermined length and an abdomen 38 connecting the chord members 37. Have.
The adjustment column member 34 is formed of a long material having the same configuration as the column member 33, but the length of the chord material is shorter than that of the column member 33.
Note that the length of the chord member of the adjusting column member 34 may be the same as that of the column member 33 or longer than that of the column member 33.

Further, the connecting member 35 is made of a tetra material 42 having the same structure as the root pillar 11 as shown in FIG. 5, and has a main body 43 and 24 joining plates 44.
The frame body 4 shown in FIG. 1 is formed by connecting the upper ends of four upper struts 46 with an upper base frame 47.
The upper column 46 has the same configuration as that of the column member 33 shown in FIG. 4, and includes four string members 48 having a predetermined length, and an abdomen 49 that connects the string members 48. Yes.
The upper base frame 47 is configured by connecting the connecting member 35 with a beam member 53 and a beam member 54.

The girder 53 has the same configuration as that of the column member 33 shown in FIG. 4, and the length of the pair of girder members 12 constituting the lower base frame 2 and the root column 11 connecting the pair of girder members 12. It has four string members 56 having a considerable length, and an abdomen 57 connecting the string members 56.
The beam member 54 also has the same configuration as that of the column member 33 shown in FIG. 4, the four string members 61 having the same length as the first beam member 13 a constituting the lower base frame 2, It has a belly material 62 for connecting the chord material 61.
The upper base frame 47 is formed by arranging the four connecting members 35 in a rectangular shape and connecting the connecting members 35 with the beam members 53 and the beam members 54. The frame body 4 is formed by connecting the upper end of the upper support column 46 to the lower end of each connecting member 35. Thereby, the interval between the upper columns 46 is equal to the interval between the lower columns 3, and the upper columns 46 can be mounted on the respective lower columns 3.

Next, a method for assembling the work table 1 will be described.
As shown in FIGS. 6 (a) and 6 (b), three carriages 8 are arranged on each rail 6 of the pair of rails 6, and a root pillar 11 is attached on each carriage 8. Accordingly, the first to third root pillars 11 a to 11 c are arranged on one rail 6, and the first to third root pillars 11 a to 11 c are arranged on the other rail 6.
Then, as shown in FIG. 6B, the first root pillar 11a and the second root pillar 11b on each rail 6 are connected by a girder 12, and the second root pillar 11b and the third root pillar are connected. The column 11 c is connected by the girder 12. These connections are performed by inserting and fastening fasteners such as bolts into the respective bolt insertion holes 15a, 28a of the joining flange 15 of the beam member 12 and the joining plate 28 of the root pillar 11. Hereinafter, also in the connection between the joining flange 15 and the members such as the joining plates 28 and 44 of the root pillar 11 and the joining member 35 or the joining flange 15, they are connected by the same method (see, for example, FIG. 5).

After that, the connecting plate 32 is installed over the first root pillar 11a to the upper part of the third root pillar 11c.
Next, as shown in FIG. 6A, the first root pillar 11a of one rail 6 and the first root pillar 11a of the other rail 6 are connected by a first beam member 13a, The third root pillar 11c of the rail 6 and the third root pillar 11c of the other rail 6 are connected by the second beam member 13b. Thereby, the lower base frame 2 is formed on the pair of rails 6.
Next, as shown in FIGS. 7A and 7B, the lower support column 3 is erected at a position directly above each of the first root pillars 11a and the third root pillars 11c. At this time, the lower end portion of the column member 33 of the lower column 3 is fastened to the root column 11 via the connecting plate 32.

The lower column 3 is preferably assembled by connecting the column member 33 and the adjustment column member 34 by the connecting member 35 in advance. However, the column member 33 is erected on the lower base frame 2, and the column It is also possible to attach the connecting member 35 to the upper end portion of the member 33 and attach the adjustment column member 34 to the upper portion of the connecting member 35.
Further, a wire 66 is stretched between the adjustment column members 34.
Next, as shown in FIG. 8, the frame body 4 previously assembled on the ground is lifted by the crane C, and the frame body 4 is attached to the upper end portion of the lower support column 3.

Thereby, the intermediate structure 71 which forms the very stable structure which connects the lower end part of the frame structure which consists of the frame body 4 and the lower support | pillar 3 with a base frame in each elevation surface will be formed. The intermediate structure 71 has a lower end portion of the upper base frame 47 of the frame body 4 at a position higher than the roof surface of the building structure A, and a distance between the lower struts 3 facing each other between the pair of rails 6. And the space | interval between the upper support | pillars 46 is formed as what is larger than the width | variety of the building structure A each.
After that, as shown in FIG. 9, the second beam member 13 b that connects the third root pillars 11 c of the lower base frame 2 is removed, thereby forming the work table 1.

Thereby, although the structure of the elevation surface on the side facing the building structure A is a ramen structure, since the other elevation surfaces maintain the above-described structure, the strength of the work table 1 is the intermediate structure 71. The strength as a temporary structure is sufficiently high.
Then, the work table 1 is moved toward the building structure A. At this time, the work table 1 is formed in a shape that is slightly larger than the building structure A, and the second beam member 13b of the lower base frame 2 that prevents the intermediate structure 71 and the building structure A from overlapping. Therefore, as shown in FIGS. 10A and 10B, the end of the building structure A can be surrounded by the work table 1.

Thereby, the assembly of the work table 1 surrounding the building structure A is completed.
Since the work table 1 is formed so as to surround one end portion of the building structure A, it is possible to simultaneously cover one end surface forming the one end portion and the end portion of the side surface connected to the one end surface. it can. In addition, the work table 1 covers one end portion of the roof surface that constitutes one end portion of the building structure A and faces the upper base frame 47 at the same time. Thereby, not only can the work on one end of the roof surface be performed easily, but also attachment of a sheet, a roof member or the like to the upper base frame 47 prevents precipitation or solar radiation below the upper base frame 47. It can be prevented.

Further, subsequently, as shown in FIG. 11, the first beam member 13a of the work table 1 is removed. Thereby, the assembly of the mobile work table 81 is completed.
By removing the first beam member 13a, the structure of the two vertical surfaces perpendicular to the extending direction of the pair of rails 6 becomes a ramen structure, but the remaining two vertical surfaces remain as the above-described structure. Therefore, the strength of the moving work table 81 is slightly inferior to that of the work table 1, and the strength as a temporary structure is sufficiently high.
Further, by removing the first beam member 13a, the moving work table 81 can freely move in the extending direction of the rail 6 as shown in FIGS. 12 (a) and 12 (b). By positioning 81 at a predetermined position, the movable work table 81 covers the building structure A across both sides at the position. In addition, the movable work table 81 covers both side surfaces of the building structure A over a predetermined range, and simultaneously covers the roof surface that is located above the both side surfaces and faces the upper base frame 47. Thereby, not only can the work of the roof surface of the building structure A be performed easily, but also precipitation or solar radiation below the upper base frame 47 can be achieved by attaching a sheet, a roof member or the like to the upper base frame 47. Can be prevented.

According to the present embodiment, first, the work table 1 that should surround the building structure A is assembled in the work space S provided on the side of one end of the building structure A. The formation of the lower base frame 2 and the assembly of the lower support 3 are performed on the ground. The assembly of the frame body 4 is also performed on the ground. Thereby, it is not necessary to work at a high place to assemble the lower base frame 2, the lower support column 3, and the frame body 4.
Further, even in the connection between the upper end portion of the lower support column 3 and the lower end portion of the frame body 4, the worker does not have to go up to the roof surface position of the building structure A, thereby avoiding the work at a high place.

Moreover, according to this Embodiment, the work bench | platform 1 is formed only by assembling each member on this pair of rail 6 in the working space S of the side of the building structure A. As shown in FIG. Therefore, when the work table 1 is assembled, there is no need for a vast work area such as an area over the entire circumference of the building structure A.
13 to 16 show a second embodiment of the present invention.
Since the configuration of each member of the present embodiment is the same as that of the first embodiment, the same reference numerals as those of the first embodiment are used and description thereof is omitted.
A method for assembling the work table 1 will be described.

First, as shown in FIGS. 13A and 13B, two carriages 8 are provided on each rail 6 of the pair of rails 6, and the root pillar 11 is attached on each carriage 8. As a result, the first and second root pillars 11 a and 11 b are provided on one rail 6, and the first and second root pillars 11 a and 11 b are provided on the other rail 6.
Then, the first root pillar 11 a and the second root pillar 11 b on each rail 6 are connected by the girder 12.
Unlike the first embodiment, the connecting plate is not bridged across the upper part of each first root pillar 11a and the upper part of the second root pillar 11b.

Next, the first root pillar 11a of one rail 6 and the first root pillar 11a of the other rail 6 are connected by the first beam member 13a, and the second root pillar 11b of the one rail 6 is connected. And the second root pillar 11b of the other rail 6 are connected by a second beam member 13b. Thereby, the lower base frame 2 is formed on the pair of rails 6.
Next, as shown in FIG. 14, the lower support column 3 is erected at a position directly above each of the first root pillars 11a and the third root pillars 11c. Further, a wire 66 is stretched between the adjustment column members 34.
Next, the frame body 4 previously assembled on the ground is lifted by the crane C, and the frame body 4 is attached to the upper end portion of the lower column 3.

After that, as shown in FIGS. 15A and 15B, the second beam member 13b connecting the third root pillars 11c of the lower base frame 2 is removed, and the first beam member 13a is further removed. A moving work table 81 is formed.
Then, the moving work table 81 is moved toward the building structure A. Here, as shown in FIGS. 16 (a) and 16 (b), the girders 11 are removed from the work table 1 before or after the moving work table 81 is moved toward the building structure A.
Thereby, the assembly of the movable work table 81a without the horizontal member connecting the root pillars is completed.

According to the present embodiment, the movable work table 81a is configured such that the beam members 13a, 13b and the beam member 12 do not exist at the lower end portion, so that the operator straddles and dive over the beam members 13a, 13b and the beam member 12. Thus, the user can approach or leave the building structure A without making it easy for the operator to access the building structure A.
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments.
For example, the number of the root pillars 11 and the lengths of the beam members 13 and the beam members 12 can be appropriately changed depending on the size of the building structure A. Moreover, also when connecting between the connection members 35 of the lower support | pillar 3 with the girder material 12, there exists an effect similar to this Embodiment. Moreover, it is also possible to employ a configuration in which a bracing material such as a wire is attached from the upper end of the upper support 46 to the lower end of the lower support 3.

Further, the configuration of the upper base frame 47 can be appropriately changed according to the shape of the roof surface of the building structure A, and can be formed in an arch shape, a single flow shape, or the like.
Further, the wire 66 may be left in an attached state in the process of constructing the work table 1 or may be removed.

1 is a side view of a workbench according to a first embodiment of the present invention. It is a front view of a trolley | bogie and a root pillar. It is a side view of a trolley | bogie and a root pillar. It is a side view of a beam material, a beam material, and a column member. It is a side view which shows the connection state of a connection member, a column member, and the adjustment column member. (A) is a top view which shows the 1st assembly process of a worktable, (b) is a side view which shows the 1st assembly process of a worktable. (A) is a top view which shows the 2nd assembly process of a worktable, (b) is a side view which shows the 2nd assembly process of a worktable. It is a side view which shows the 3rd assembly process of a work table. It is sectional drawing which shows the 4th assembly process of a work table. (A) is sectional drawing which shows the 5th assembly process of a worktable, (b) is a side view which shows the 5th assembly process of a worktable. It is sectional drawing which shows the 6th assembly process of a work table. (A) is a top view which shows the 7th assembly process of a work table, (b) is a side view which shows the 7th assembly process of a work table. (A) is a top view which shows the 1st assembly process of the worktable which concerns on 2nd Embodiment of this invention, (b) is a side view which shows the 1st assembly process of a worktable. It is a side view which shows the 2nd assembly process of a work table. (A) is sectional drawing which shows the 3rd assembly process of a worktable, (b) is a side view which shows the 3rd assembly process of a worktable. (A) is sectional drawing which shows the 4th assembly process of a worktable, (b) is a side view which shows the 4th assembly process of a worktable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Worktable 2 Lower base frame 3 Lower support column 4 Frame body 6 Rail 8 Carriage 11 Root pillar 12 Girder material 13 Beam material 33 Column member 34 Adjustment column member 35 Connecting member 46 Upper support column 47 Upper base frame 71 Intermediate structure 81 Movement Work table 81a Mobile work table

Claims (5)

On each rail (6) of a pair of rails (6) laid to the work space (S) adjacent to the building structure (A) with the building structure (A) sandwiched therebetween, at least two carriages ( 8) and attach the root pillar (11) to each carriage (8),
While connecting the root pillar (11) located on the same rail (6) with the girder (12), the pair of root pillars (11a) located on the near side as viewed from the building structure (A) and Connecting the pillars (11c) located on the farthest side from the building structure (A) with beam members (13b, 13a) to form the lower base frame (2),
Lower pillars (3) are erected on each root pillar (11),
After connecting the lower end of the frame body (4) to the upper end of each lower column (3) to form an intermediate structure (71) that is wider than the building structure (A) and has a larger overall length,
A work table (1) is formed by removing the beam member (13b) connecting the pair of root pillars (11c) located on the near side as viewed from the building structure (A),
By moving the work table (1) toward the building structure (A), the work table (1) is overlapped with one end of the building structure (A) adjacent to the work space (S). A method for assembling a workbench characterized by that.   After the work table (1) is overlapped with the building structure (A), the beam members connecting the root pillars (11a) located on the innermost side from the building structure (A). The assembly of the workbench according to claim 1, characterized in that (13a) is removed and a movable workbench (81) movable on the pair of rails (6) along the building structure (A) is formed. Method.   Before, during or after the lower pillars (3) are erected on the root pillars (11), the upper pillars (46) are spaced at the same intervals as the lower pillars (3) erected on the root pillars (11). The work table according to claim 1 or 2, wherein one end of each upper column (46) is connected by an upper base frame (47) to form the frame body (4). How to set up.   The root pillars (11a to 11c) attached to the carriages (8) arranged on the same rail (6) are connected by the beam member (11) and connected by a connecting plate (32). The method for assembling a workbench according to any one of claims 1 to 3.   The work table (1) according to any one of claims 1 to 3, wherein the beam (12) is removed after the work table (1) is overlapped with the building structure (A). Assembly method.

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