Temporary structure

Abstract

To provide a temporary structure capable of improving on-site workability by reducing the number of supports that make up a scaffolding structure while increasing the working space between adjacent columns.SOLUTION: The temporary structures, such as scaffolding and shoring, include: multiple support columns 7a that are arranged on the floor; multiple first horizontal members 8 that are connected to the top of the support; multiple second horizontal members 9 that are arranged in a grid pattern on top of the first horizontal member; and horizontal member connecting portions 20, 40, 41 that connect the mutually intersecting portions of the first horizontal member and the second horizontal member. The first horizontal member is an H-shaped aluminum member, and the second horizontal member is a square steel pipe.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to temporary structures such as temporary scaffolding and shoring. [Background technology]

[0002] Shoring, a type of temporary structure, is a device installed on the floor surface of the lower floor to support building components such as the floor slab, beams, roof, etc. This shoring comprises a scaffolding structure installed on the floor surface of the lower floor, multiple joists connected to the upper part of the scaffolding structure in parallel with each other, and multiple joists arranged in a grid pattern on the multiple joists and connected to the joists, and supports the building components placed on top of the multiple joists from below.

[0003] The scaffolding structure comprises a plurality of posts arranged at a predetermined pitch and extending vertically, horizontal connecting members extending horizontally between adjacent posts and connecting them, and diagonal connecting members extending diagonally between adjacent posts and connecting them, and the joists are connected to the upper ends of each post.

[0004] Conventional joists are square or round pipes made of iron, which are heavy and have low strength (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-152663 Summary of the Invention [Problem to be solved by the invention]

[0006] When using low-strength beams, it is necessary to narrow the pitch between adjacent posts in the scaffolding structure to support the beams from below. Narrowing the pitch between adjacent posts increases the number of posts and reduces the working space between posts when assembling the scaffolding structure, making it difficult to work on site.

[0007] Therefore, an object of the present invention is to provide a temporary structure that can improve on-site workability by reducing the number of pillars and increasing the working space between adjacent pillars. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the temporary structure of the present invention is a temporary structure such as temporary scaffolding or shoring, and comprises a scaffolding structure placed on the floor surface, a plurality of first horizontal members connected parallel to each other to the upper ends of a plurality of pillars constituting the scaffolding structure, a plurality of second horizontal members arranged in a crisscross pattern on top of the plurality of first horizontal members, and horizontal member connecting portions connecting the mutually intersecting portions of the first horizontal members and the second horizontal members, wherein the first horizontal members are H-shaped aluminum members and the second horizontal members are square iron pipes. [Effects of the Invention]

[0009] According to the temporary structure of the present invention, the number of pillars constituting the scaffolding structure can be reduced and the working space between adjacent pillars can be increased, thereby improving workability on site. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic side view showing the state in which a construction floor of a building is being constructed using shoring, which is a type of temporary structure. [Figure 2] FIG. 1 is a diagram showing a joist as a first horizontal member used in the temporary structure according to the present invention. [Figure 3] 1 is a diagram showing a connecting hardware that constitutes a horizontal member connecting portion of a first embodiment used in a temporary structure according to the present invention. FIG. [Figure 4] 1 is a diagram showing a horizontal member connecting portion of a first embodiment that connects a first horizontal member and a second horizontal member according to the present invention. FIG. [Figure 5] 10A and 10B are diagrams showing the configuration of a T-bolt that constitutes a horizontal member connecting portion according to the present invention. [Figure 6]10 is a diagram showing a horizontal member connecting portion of a second embodiment that connects a first horizontal member and a second horizontal member according to the present invention. FIG. [Figure 7] FIG. 10 is a side view of a connecting hardware that constitutes a horizontal member connecting portion of a second embodiment according to the present invention. [Figure 8] 10 is a diagram showing a horizontal member connecting portion of a third embodiment that connects a first horizontal member and a second horizontal member according to the present invention. FIG. [Figure 9] FIG. 10 is a perspective view showing a connecting hardware that constitutes a horizontal member connecting portion of a third embodiment according to the present invention. [Figure 10] FIG. 10 is a side view of a connecting hardware that constitutes a horizontal member connecting portion of a third embodiment according to the present invention. [Figure 11] FIG. 10 is a view showing a state in which the connecting hardware constituting the horizontal connecting portion of the third embodiment according to the present invention is stacked and stored. DETAILED DESCRIPTION OF THE INVENTION

[0011] Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between thickness and planar dimensions, the thickness ratio of each layer, etc., may differ from the actual ones. Therefore, specific thicknesses and dimensions should be determined with reference to the following description. Furthermore, it goes without saying that the drawings may include parts with different dimensional relationships and ratios.

[0012] Furthermore, the embodiments shown below are merely examples of devices and methods for embodying the technical concept of the present invention, and the technical concept of the present invention does not limit the materials, shapes, structures, arrangements, etc. of the components to those described below. The technical concept of the present invention can be modified in various ways within the technical scope defined by the claims.

[0013] In the following description, terms indicating directions such as "upper," "lower," "left," "right," and "depth direction" are used with reference to the directions in the accompanying drawings.

[0014] FIG. 1 is a schematic side view showing the state in which a construction floor of a building 2 is being constructed using shoring 1 as a temporary structure. Above the construction floor, a floor slab 4 of the upper floor is formed between concrete columns 3, 3. The shoring 1 is a device that supports a formwork (dam board) 5 for pouring concrete when forming the floor slab 4, until the columns 3, 3 and the floor slab 4 are joined. The building component described in this invention corresponds to the floor slab 4.

[0015] As shown in Figure 1, the shoring 1 comprises a scaffolding structure 7 placed on the floor surface 6 of the lower floor, a plurality of joists 8 connected parallel to each other on the top of the scaffolding structure 7, and a plurality of floor joists 9 connected in a grid pattern to the top of the joists 8, with sheathing boards 5 placed on top of the plurality of floor joists 9 and supported by the shoring 1. Note that the first horizontal member described in this invention corresponds to the joists 8, and the second horizontal member described in this invention corresponds to the floor joists 9.

[0016] The scaffolding structure 7 comprises a plurality of pillars 7a arranged on the floor surface 6 at a predetermined pitch in the left-right and depth directions and extending vertically, horizontal connecting members 7b extending horizontally between and connecting adjacent pillars 7a, and diagonal connecting members 7c extending diagonally between and connecting each pillar, and joists 8 are connected to the upper ends of each pillar 7a.

[0017] The beams 8 extending in the left-right direction are composed of two beams 8a, 8b connected in a straight line, and are connected to the upper ends of each support 7a, with the multiple beams 8 arranged parallel to each other in the depth direction.

[0018] The joists 9 extending in the depth direction are iron pipes, and the crossing portions are connected to the upper ends of the joists 8 and are arranged so as to be parallel in the left-right direction.

[0019] FIG. 2 shows the shape of the joists 8 (8a, 8b). The joists 8 are H-shaped members made of aluminum (aluminum casting) and include a flat web 11 extending vertically, a lower flange 12 formed at the lower end of the web 11 in an inverted T-shape, and an upper flange 13 formed at the upper end of the web 11 in a T-shape. The lower flange 12 and the upper flange 13 are identical in vertical and width dimensions and shape. Specifically, a groove 14 is formed on the lower surface of the lower flange 12, and a pair of flanges 15 protruding in opposing directions are formed around the opening periphery of the groove 14. A groove 16 is also formed on the upper surface of the upper flange 13, and a pair of flanges 17 protruding in opposing directions are formed around the opening periphery of the groove 16.

[0020] FIG. 3 shows the shape of a connecting fitting 20 of the first embodiment, which connects a joist 8 and a joist 9. The connecting fitting 20 of the first embodiment is composed of a fitting body 21 formed by bending a rectangular steel plate and a pair of long steel reinforcing members 22, 22. The fitting body 21 is bent longitudinally into a generally crank shape to form a joist joint portion 23, a joist first side surface abutting portion 24, and a joist upper surface abutting portion 25, which are adjacent and perpendicular to each other. A joist second side surface abutting portion 26 is formed at the tip of the joist upper surface abutting portion 25 so as to extend parallel to the joist first side surface abutting portion 24. An elongated hole 27 is formed in the joist joint portion 23. The pair of reinforcing members 22, 22 are welded to straddle the joist joint portion 23 and the joist first side surface abutting portion 24.

[0021] The connecting fitting described in the present invention corresponds to connecting fitting 20, and the hole and the first hole formed in the connecting fitting described in the present invention correspond to elongated hole 27. Also, the first connecting flat plate described in the present invention corresponds to joist joint portion 23, the joist side abutment portion described in the present invention corresponds to joist first side abutment portion 24, the second connecting flat plate described in the present invention corresponds to joist upper surface abutment portion 25, and the third connecting flat plate described in the present invention corresponds to joist second side abutment portion 26.

[0022] As shown in FIG. 5, the upper flange 13 of the large drawing material 8 and the joist 9 are connected by using the connecting fitting 20, the T-bolt 40, and the nut 41. Note that the horizontal member connecting portion described in the present invention corresponds to the connecting fitting 20, the T-bolt 40, and the nut 41.

[0023] As shown in FIG. 6, the T-bolt 40 includes a threaded portion 42 and a flange engaging portion 43 integrally formed in a T-shape at one end of the threaded portion 42. The longitudinal dimension T1 of the flange engaging portion 43 is set to be larger than the opening width K1 between the pair of flange portions 17 of the upper flange 13 and smaller than the groove width K2 of the upper flange 13 (K1 < T1 < K2). Also, the short dimension T2 of the flange engaging portion 43 is set to be smaller than the opening width K1 between the pair of flange portions 17 (T2 < K1).

[0024] Insert the flange engaging portion 43 of the T-bolt 40 into the groove 16 of the upper flange 13 in the state shown by the broken line in FIG. 6 so as not to engage with the pair of flange portions 17, and rotate the threaded portion 42 of the T-bolt 40 by approximately 90°, whereby the tip of the flange engaging portion 43 is inserted inside the pair of flange portions 17.

[0025] Place the large drawing material connecting portion 23 of the connecting fitting 20 against the upper surface of the upper flange 13, and insert the threaded portion 42 of the T-bolt 40 through the long hole 31. Then, place the joist first side surface contact portion 24 of the connecting fitting 20 against the side surface 9a of the joist 9, the joist upper surface contact portion 25 against the upper surface 9b of the joist 9, and the joist second side surface contact portion 26 against a part of the side surface 9c of the joist 9.

[0026] Then, when the threaded portion 42 of the T-bolt 40 is screwed with the nut 41 and tightened, the large drawing material connecting portion 23 of the connecting fitting 20 makes surface contact with the upper surface of the upper flange 13 of the large drawing material 8, and the joist first side surface contact portion 24, the joist upper surface contact portion 25, and the joist second side surface contact portion 26 of the connecting fitting 20 hold the joist 9 in a state of making surface contact with the outer periphery of the joist 9. At this time, the pair of reinforcing members 22, 22 prevent deformation of the joist first side surface contact portion 24, thereby maintaining the surface contact state of the connecting fitting 20 with respect to the outer periphery of the joist 9.

[0027] Next, the effects of the support 1 configured as above will be described below.

[0028] In the shoring 1 of this embodiment, the joists 8 are lightweight members made of aluminum, so that the work of assembling, dismantling and transporting the shoring 1 can be labor-saving.

[0029] Furthermore, the lower flange 12 and the upper flange 13 of the beam 8 have the same shape, so that the beam 8 can be assembled without considering the vertical direction.

[0030] Furthermore, the H-shaped beams 8 have higher bending strength than the square or round pipe beams that were previously used, making it possible to increase the pitch between adjacent posts 7a, 7a. This allows for a wider working space for adjacent posts 7a, 7a while reducing the number of posts, improving on-site workability.

[0031] In addition, when the threaded portion 42 of the T-bolt 40 engaged with the joist 8 is inserted into the long hole 27 of the connecting fitting 20 and a nut 41 is screwed onto the threaded portion 42 and tightened, the joist first side abutment portion 24, joist upper surface abutment portion 25 and joist second side abutment portion 26 of the connecting fitting 20 hold the joist 9 in face contact with the outer periphery of the joist 9, thereby easily connecting the joist 8 and joist 9.

[0032] Next, Fig. 6 shows a second embodiment of a connecting fitting 45, T-bolt 40, and nut 41 that connects a joist 8 and a floor joist 9. The connecting fitting 45, T-bolt 40, and nut 41 correspond to the horizontal member connecting portion described in the present invention.

[0033] Connecting fitting 45 is formed by bending a long iron plate material longitudinally into a generally crank shape, thereby forming a first connecting flat plate 46, a joist side abutment portion 47, and a second connecting flat plate 48 that are adjacent and perpendicular to each other. A third connecting flat plate 49 extending parallel to joist side abutment portion 47 is formed by bending the tip of second connecting flat plate 48, and a fourth connecting flat plate 50 extending parallel to joist side abutment portion 47 is formed by bending the tip of first connecting flat plate 46. Identical elongated holes 51 and 52 are formed in first connecting flat plate 46 and second connecting flat plate 38.

[0034] Here, as shown in Figure 7, when the midpoint of the dimension between one end of the joist side abutment portion 47 on the first connecting flat plate 46 side and the other end on the second connecting flat plate 48 side is defined as C, the connecting fittings 45 are formed so that the first connecting flat plate 46, the second connecting flat plate 48, the third connecting flat plate 49 and the fourth connecting flat plate 50 are point symmetrical with respect to C.

[0035] The connecting fitting described in the present invention corresponds to connecting fitting 45, and the second hole formed in the third connecting plate described in the present invention corresponds to slot 52. Also, the first connecting plate described in the present invention corresponds to first connecting plate 46, the joist side abutment portion described in the present invention corresponds to joist side abutment portion 47, the second connecting plate described in the present invention corresponds to second connecting plate 48, the third connecting plate described in the present invention corresponds to third connecting plate 49, and the fourth connecting plate described in the present invention corresponds to fourth connecting plate 50.

[0036] The first connecting plate 46 of the connecting fitting 45 is brought into contact with the upper surface of the upper flange 13, and the threaded portion 42 of the T-bolt 40 is inserted into the elongated hole 51. Then, the joist side surface abutting portion 47 of the connecting fitting 45 is brought into contact with the side surface 9a of the joist 9, the second connecting plate 48 is brought into contact with the upper surface 9b of the joist 9, and the third connecting plate 49 is brought into contact with a part of the side surface 9c of the joist 9. When the nut 41 is then screwed onto the threaded portion 42 of the T-bolt 40 and tightened, the first connecting plate 46 of the connecting fitting 45 comes into surface contact with the upper surface of the upper flange 13 of the joist 8, and the joist 9 is held in a state where the joist side surface abutting portion 47, the second connecting plate 48, and the third connecting plate 49 of the connecting fitting 45 are in surface contact with the outer periphery of the joist 9.

[0037] On the other hand, because the connecting fitting 45 has a point-symmetrical structure with respect to point C of the joist side surface abutting portion 47, when the second connecting plate 48 of the connecting fitting 45 abuts against the upper surface of the upper flange 13 and the threaded portion 42 of the T-bolt 40 is inserted into the elongated hole 52, the joist side surface abutting portion 47 of the connecting fitting 45 abuts against the side surface 9a of the joist material 9, the second connecting plate 48 abuts against the upper surface 9b of the joist material 9, and the fourth connecting plate 50 abuts against a part of the side surface 9c of the joist material 9. Then, when the nut 41 is screwed onto the threaded portion 42 of the T-bolt 40 and tightened, the joist side surface abutting portion 47 of the connecting fitting 45, the first connecting plate 46, and the fourth connecting plate 50 can hold the joist material 9 with their surface contacting the outer periphery of the joist material 9.

[0038] In this way, in the second embodiment of the connecting fitting 45, if the midpoint of the dimension between one end of the joist side abutment portion 47 on the first connecting flat plate 46 side and the other end on the second connecting flat plate 48 side is defined as C, the first connecting flat plate 46, the second connecting flat plate 48, the third connecting flat plate 49 and the fourth connecting flat plate 50 are formed so as to be point symmetrical with respect to point C. Therefore, by abutting one of the first connecting flat plate 46 and the second connecting flat plate 48 on the upper surface of the upper flange 13 and screwing and tightening the nut 41 onto the threaded portion 42 of the T-bolt 40, the joist side abutment portion 47, the other of the first connecting flat plate 46 and the second connecting flat plate 48, and one of the third connecting flat plate 49 and the fourth connecting flat plate 50 formed continuous with the other can securely hold the joist 9 in face contact with the outer periphery of the joist 9.

[0039] Therefore, the second embodiment can achieve the same effects as the first embodiment, and when connecting the joists 8 and the joists 9 using the connecting fittings 45, the connecting work between the joists 8 and the joists 9 can be performed by simply setting the position of the connecting fittings 45, thereby simplifying the connecting work between the joists 8 and the joists 9.

[0040] Next, Figure 8 shows a third embodiment of a connecting fitting 55, T-bolt 40, and nut 41 that connects a joist 8 and a floor joist 9. The connecting fitting 55, T-bolt 40, and nut 41 correspond to the horizontal member connecting portion described in the present invention.

[0041] 9, the connecting fitting 55 includes a first connecting plate 56 that abuts against the upper flange 13 of the joist 8, a second connecting plate 57 that abuts against the upper surface 9b of the joist 9, and a connecting plate portion 58 in which the first connecting plate 56 and the second connecting plate 57 extend parallel to each other with different heights and connect the first connecting plate 56 and the second connecting plate 57 so that they do not overlap when viewed from the surface direction. The connecting plate portion 58 includes a first connecting piece 58a that extends in the same plane from the end of the first connecting plate 56, a second connecting piece 58b that extends in the same plane from the end of the second connecting plate 57, and a third connecting piece 58c that is connected to the first connecting piece 58a and the second connecting piece 58b so as to form a Z shape when viewed from the side.

[0042] A third connecting plate 59 is formed at the tip of the first connecting plate 56 by bending it downward perpendicular to the first connecting plate 56, and a fourth connecting plate 60 is formed at the tip of the second connecting plate 57 by bending it upward perpendicular to the second connecting plate 57. The third connecting plate 59 and the fourth connecting plate 60 have oblong holes 61 and 62 of the same shape formed therein.

[0043] 10, the connecting fitting 45 is configured such that the intermediate position of the dimension between one end of the third connecting piece 58c on the first connecting piece 58a side and one end of the third connecting piece 58c on the second connecting piece 58b side is C In this case, the first connecting flat plate 56, the second connecting flat plate 578, the third connecting flat plate 59, and the fourth connecting flat plate 60 are formed so as to be point symmetrical with respect to point C.

[0044] The connecting fitting described in the present invention corresponds to connecting fitting 55, and the second hole formed in the third connecting plate described in the present invention corresponds to slot 52. Furthermore, the first connecting plate described in the present invention corresponds to first connecting plate 56, the second connecting plate described in the present invention corresponds to second connecting plate 57, the third connecting plate described in the present invention corresponds to third connecting plate 59, and the fourth connecting plate described in the present invention corresponds to fourth connecting plate 60.

[0045] The first connecting plate 56 of the connecting fitting 55 is brought into contact with the upper surface of the upper flange 13, and the threaded portion 42 of the T-bolt 40 is inserted into the elongated hole 61. The second connecting plate 57 of the connecting fitting 55 is brought into contact with the upper surface 9b of the joist 9, and the fourth connecting plate 60 is brought into contact with a part of the side surface 9c of the joist 9. When the nut 41 is then screwed onto the threaded portion 42 of the T-bolt 40 and tightened, the first connecting plate 56 of the connecting fitting 55 comes into surface contact with the upper surface of the upper flange 13 of the joist 8, and the second connecting plate 57 and fourth connecting plate 60 of the connecting fitting 55 are in surface contact with the outer periphery of the joist 9, holding the joist 9.

[0046] On the other hand, because the connecting fitting 55 has a point-symmetrical structure with respect to point C of the third connecting piece 58c of the connecting plate portion 58, when the second connecting plate 57 of the connecting fitting 55 is in contact with the upper surface of the upper flange 13 and the threaded portion 42 of the T-bolt 40 is inserted into the elongated hole 62, the first connecting plate 56 of the connecting fitting 55 is in contact with the upper surface 9b of the joist material 9, and the third connecting plate 59 is in contact with a part of the side surface 9c of the joist material 9. Then, when the nut 41 is screwed onto the threaded portion 42 of the T-bolt 40 and tightened, the first connecting plate 56 and the third connecting plate 59 of the connecting fitting 55 can hold the joist material 9 in surface contact with the outer periphery of the joist material 9.

[0047] In this way, the connecting fitting 55 of the second embodiment has a point-symmetrical structure based on point C of the third connecting piece 58c in the connecting plate portion 58, so that by abutting one of the first connecting flat plate 56 and the second connecting flat plate 57 on the upper surface of the upper flange 13 and screwing and tightening the nut 41 onto the threaded portion 42 of the T-bolt 40, the other of the first connecting flat plate 56 and the second connecting flat plate 57 and one of the third connecting flat plate 59 and the fourth connecting flat plate 60 formed continuously from the other can securely hold the joist material 9 in face contact with the outer periphery of the joist material 9.

[0048] Therefore, the third embodiment can achieve the same effects as the first embodiment, and when connecting the joists 8 and the joists 9 using the connecting fittings 55, the connecting work between the joists 8 and the joists 9 can be performed by simply setting the position of the connecting fittings 55, thereby simplifying the connecting work between the joists 8 and the joists 9.

[0049] 11 shows a state in which multiple connecting fittings 55 of the third embodiment are stacked together in order to pack the connecting fittings 55. Multiple stacked connecting fittings 55 have a compact size, making them easy to transport and ensuring sufficient space for work.

[0050] Although the above-mentioned first to third embodiments have been described with respect to support 1, which is a type of temporary structure, the same effects can be obtained by applying it to scaffolding, which is a type of temporary structure, which has multiple pillars, first horizontal members connected to the upper ends of the pillars, second horizontal members arranged in a crisscross pattern on top of the first horizontal members, and horizontal member connecting parts connecting the first and second horizontal members. [Explanation of symbols]

[0051] 1 Shoring 2. Building 3 Pillars 4 Floor slab 5 Formwork (shielding) 6 Floor 7 Scaffolding structure 7a Post 7b Horizontal connection material 7c Diagonal connector 8. Joists 9 Joist material 9a side 9b Top side 9c side 11 Web 12 Lower flange 13 Upper flange 14 Groove 15 Tsuba 16 Groove 17 Tsuba 20 Connecting fittings 21 Metal fittings 22 Reinforcement member 23 Joint of joists 24 Joist first side abutment 25 Joist upper surface contact area 26 Second side abutment of joist 27 slotted hole 40 T-bolts 41 Nut 43 flange engagement part 45 Connecting fittings 46 1st connecting plate 47 Joist side contact part 48 2nd connecting plate 49 Third connecting plate 50 4th connecting plate 51,52 slotted holes 55 Connecting fittings 56 1st connecting plate 57 2nd connecting plate 58 Connecting plate part 58a 1st connecting piece 58b 2nd connecting piece 58c 3rd connecting piece 59 Third connecting plate 60 4th connecting plate 61,62 slotted holes

Claims

1. Temporary structures such as temporary scaffolding and shoring, a scaffolding structure disposed on a floor surface; A plurality of first horizontal members connected parallel to each other to the upper ends of the plurality of columns constituting the scaffolding structure; A plurality of second horizontal members arranged in a grid pattern on top of the plurality of first horizontal members; a horizontal member connecting portion that connects the first horizontal member and the second horizontal member at their mutually intersecting portions, The first horizontal member is an H-shaped member made of aluminum, A temporary structure characterized in that the second horizontal member is a square iron pipe.

2. The first horizontal member has an upper flange formed on an upper portion of the web, A temporary structure as described in claim 1, characterized in that the horizontal member connecting portion comprises a connecting fitting that engages with the upper flange and the second horizontal member, and a T-bolt and nut that connect the connecting fitting to the upper flange.

3. A groove is formed on the upper surface of the upper flange of the first horizontal member, and a pair of flanges facing each other are formed on the opening periphery of the groove, The T-bolt has a flange engaging portion formed at one end of a threaded portion, and the flange engaging portion is inserted into the grooves to engage with the pair of flange portions, A temporary structure as described in claim 2, characterized in that the threaded portion protruding upward from the groove is inserted into a hole formed in the connecting fitting, and the nut is screwed onto the threaded portion protruding upward from the connecting fitting, so that the connecting fitting holds the second horizontal member and connects the first horizontal member and the second horizontal member.

4. 4. The temporary structure of claim 3, wherein the connecting fitting comprises: a first connecting flat plate that abuts against the upper surface of the first horizontal member and has a first hole formed as the hole; a second connecting flat plate that abuts against the upper surface of the square pipe that serves as the second horizontal member; a connecting plate portion that connects the first connecting flat plate and the second connecting flat plate; and a third connecting flat plate that is bent at a right angle adjacent to the second connecting flat plate and abuts against the first side surface of the square pipe.

5. The temporary structure described in claim 4, characterized in that the connecting fitting is a member formed by bending a long iron plate material into an approximately crank shape along the longitudinal direction, and the joining plate portion formed between the first connecting flat plate and the second connecting flat plate abuts against the second side surface opposite the first side surface of the square pipe.

6. A temporary structure as described in claim 4, characterized in that the connecting plate portion of the connecting fitting comprises a first connecting piece extending from the end of the first connecting plate toward the second connecting plate on the same plane, a second connecting piece extending from the end of the second connecting plate 57 toward the first connecting plate on the same plane, and a third connecting piece formed between the first connecting piece and the second connecting piece so as to form a Z shape when viewed from the side.

7. The connecting fitting has a fourth connecting plate formed thereon that extends perpendicularly from an end of the first connecting plate that is not adjacent to the joining plate portion, a second hole is formed as the hole in the third connecting flat plate, A temporary structure as described in any one of claims 4 to 6, characterized in that if the midpoint of the dimension between one end of the connecting plate portion on the first connecting plate side and the other end of the connecting plate portion on the second connecting plate side is C, the first connecting plate, the second connecting plate, the third connecting plate and the fourth connecting plate are formed so as to be point symmetrical with respect to point C.

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