Temporary Structure

Abstract

To easily add a reinforcement brace between columns of a temporary structure.SOLUTION: A reinforcement brace 3 is bridged between adjacent columns 1 each provided with flanges 2 at predetermined intervals in a vertical direction. The temporary structure includes: the columns 1 arranged in parallel; a plurality of engaging portions 2 provided along a height direction of the columns; a cross brace 10 provided with a pair of diagonal members 4, 5 bridged between the engaging portions 2 of the adjacent columns 1, 1; a horizontal member 13 connected between upper ends of the pair of diagonal members 4 and 5; a first connecting portion 17 provided at the upper ends of the pair of diagonal members 4 and 5; and a second connecting portion 19 provided at lower ends of the pair of diagonal members 4 and 5. A lower end portion of the reinforcement brace 3 is connected to the first connecting portion 17, and an upper end portion of the reinforcement brace 3 is connected to the second connecting portion 19.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a temporary structure used for assembling temporary scaffolding and shoring. [Background technology]

[0002] Temporary scaffolding and shoring are used as temporary structures in various types of construction work and civil engineering work. One example of this temporary scaffolding is described in Patent Document 1. In Patent Document 1, posts are arranged in parallel at predetermined intervals along the exterior wall of an object such as a building, and adjacent posts along the parallel direction are connected with a brace (hereinafter referred to as a cross brace) in which a pair of diagonal members cross each other in the middle, and further, scaffolding boards are hung between horizontal beams provided at the top of each of the adjacent posts.

[0003] The support columns have engaging portions at required intervals along their height. The cross braces are connected to the support columns via these engaging portions. Adjacent support columns are also connected by horizontal members as appropriate. Furthermore, Patent Document 2 discloses a technology in which horizontal handrails are provided between the upper ends of the cross braces. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-147953 (see Figure 2 on page 8) [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-169919 (see Figure 2 on page 7) Summary of the Invention [Problem to be solved by the invention]

[0005] Recently, there has been a demand for further improvement in the strength and rigidity of temporary structures such as temporary scaffolding and shoring. However, in Patent Documents 1 and 2, the ends of the cross braces are connected to engagement parts at diagonal positions of adjacent columns. Therefore, the cross braces can only be attached to locations where the engagement parts have been set in advance. Therefore, adding more braces requires modifying the structure of the columns, which is costly and not easy to do.

[0006] Therefore, the problem that the present invention aims to solve is to make it possible to easily add reinforcing braces between the supports of a temporary structure. [Means for solving the problem]

[0007] In order to solve the above problems, the temporary structure of this invention can have a configuration comprising a plurality of parallel columns, a plurality of engaging portions arranged along the height direction of the columns, cross braces having a pair of diagonal members spanning between the engaging portions of adjacent columns, and additional engaging portions provided on the cross braces or on a separate member fixed to the cross braces, and a reinforcing brace other than the cross braces is connected to the additional engaging portions.

[0008] With this configuration, it is possible to connect reinforcing braces to additional engagement portions provided on cross braces or separate members fixed to the cross braces, making it easy to add reinforcing braces to temporary structures.

[0009] The separate member may be a horizontal member connected between the upper ends of the pair of diagonal members. In this configuration, a horizontal member is connected between the upper ends of the pair of diagonal members of the cross brace, and a reinforcing brace can be connected to the additional engagement portion provided on this horizontal member.

[0010] The additional engagement portions may be first connecting portions provided at the upper ends of the pair of diagonal members. In this configuration, for example, by connecting the lower ends of the reinforcing braces to the first connecting portions, the reinforcing braces can be connected directly above the cross braces.

[0011] Furthermore, the additional engagement portion may be a second connecting portion provided at the lower end of the pair of diagonal members. In this configuration, for example, by connecting the upper end of a reinforcing brace to the second connecting portion, the reinforcing brace can be connected directly below the cross brace.

[0012] The structure may further include an additional handrail that is placed between the posts, the additional handrail having a horizontal member portion and an inclined member portion formed downward on both longitudinal sides of the horizontal member portion, and the inclined member portion being connected to an additional engagement portion.

[0013] In addition, a configuration can be adopted in which the structure further includes an additional handrail arranged between the pillars, the additional handrail having a pair of additional diagonal members arranged diagonally between the pillars, and an additional horizontal member spanning the upper ends of the pair of additional diagonal members, the upper ends of the pair of additional diagonal members engaging with the engaging portions of the pillars, and the lower ends of the pair of additional diagonal members connected to the additional engaging portions.

[0014] In the case of a configuration with an additional handrail, for example, by installing the additional handrail above the highest cross brace in the temporary structure and between the supports, the rigidity between the supports can be increased. Also, the safety of workers working on the scaffolding plank installed at the position of the highest cross brace can be improved.

[0015] The reinforcing brace can have a pair of reinforcing diagonal members, and the upper or lower ends of the pair of reinforcing diagonal members have hooks that engage with the additional engagement portion, and the hooks have an axial portion that protrudes toward the additional engagement portion and a tip portion that extends outward in the vertical direction from the axial portion.

[0016] In this configuration, the reinforcing brace can be tilted so that the tips of the hooks provided on the pair of reinforcing diagonal members can engage with the additional engagement portions provided on the upper or lower ends of the pair of diagonal members. [Effects of the Invention]

[0017] As described above, the temporary structure according to the present invention allows for easy addition of reinforcing braces to the cross braces that span between the engaging portions of adjacent columns. Furthermore, the ability to easily add reinforcing braces improves the durability of the temporary structure against horizontal forces, such as those caused by earthquakes. Furthermore, by installing additional handrails between the columns, the rigidity between the columns can be increased. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a front view showing a temporary structure according to an embodiment of the present invention; [Figure 2] FIG. 1 is a front view showing the cross braces of this embodiment. [Figure 3] An enlarged front view of the main part showing the first locking portion of the cross brace [Figure 4] FIG. 1A is a perspective view showing a state before a first engaging portion of a cross brace is engaged with a flange of a support column; FIG. 1B is a perspective view showing a state after the first engaging portion of the cross brace is engaged with a flange of a support column; [Figure 5] Enlarged front view of the main part showing the second locking portion of the cross brace [Figure 6] FIG. 1A is a perspective view showing a state before the second engaging portion of the cross brace is engaged with the flange of the support column; FIG. 1B is a perspective view showing a state after the second engaging portion of the cross brace is engaged with the flange of the support column; [Figure 7] (a) is a perspective view showing a state before a reinforcing brace is connected to the second engaging portion of the cross brace; (b) is a perspective view showing a state after the reinforcing brace is connected to the second engaging portion of the cross brace; [Figure 8] FIG. 10 is a perspective view showing a state in which a reinforcing brace is connected to a first engaging portion of the cross brace. [Figure 9] FIG. 1A is a perspective view showing a state in which an engagement piece of an engagement member is supported by a fixed shaft portion; FIG. 1B is a side view showing a state in which the engagement piece of an engagement member is supported by a fixed shaft portion; [Figure 10] FIG. 1A is a perspective view showing a state in which an engagement piece of an engagement member is held by a fixed shaft portion; FIG. 1B is a side view showing a state in which the engagement piece of an engagement member is held by a fixed shaft portion; [Figure 11] Front view showing another form of cross bracing [Figure 12] FIG. 12 is a perspective view showing a state in which the first engaging portion of the cross brace shown in FIG. 11 is engaged with the flange of the support. [Figure 13] (a) A perspective view showing another form of reinforcing brace, (b) An enlarged perspective view showing the upper end of another form of reinforcing brace, (c) An enlarged perspective view showing the lower end of another form of reinforcing brace. [Figure 14] FIG. 14 is a perspective view showing another embodiment of the reinforcing brace shown in FIG. 13 connected to the first engaging portion of the cross brace. [Figure 15] FIG. 14 is a side view showing another embodiment of the reinforcing brace shown in FIG. 13 connected to the first engaging portion of the cross brace. [Figure 16] FIG. 14 is a front view showing another embodiment of the reinforcing brace shown in FIG. 13 in the middle of being connected to the first engaging portion of the cross brace. [Figure 17] FIG. 14 is a side view showing another embodiment of the reinforcing brace shown in FIG. 13 in the middle of being connected to the first engaging portion of the cross brace. [Figure 18] (a) A side view showing a state in which an axial hook of another type of reinforcing brace shown in FIG. 13 is inserted into a first locking portion of a cross brace; (b) A side view showing a state in which an axial hook of another type of reinforcing brace shown in FIG. 13 is engaged with a first locking portion of a cross brace; [Figure 19] FIG. 10 is a side view showing a state in which another form of reinforcing brace is being connected to the second engaging portion of the cross brace. [Figure 20] Front view showing temporary structure with additional handrails [Figure 21] Front view showing additional handrails [Figure 22] 22 is an enlarged front view of the main part showing the additional handrail shown in FIG. 21 connected to the first locking portion of the cross brace. [Figure 23] FIG. 10 is a perspective view showing the state in which the engaging member of the additional handrail is inserted through the first connecting portion of the cross brace; [Figure 24] Front view of a temporary structure with other configurations of additional handrails [Figure 25] 25 is a front view showing the state in which the additional handrail of another form shown in FIG. 24 is fastened to the flange of the support. DETAILED DESCRIPTION OF THE INVENTION

[0019] A temporary structure according to an embodiment of the present invention will be described below with reference to the drawings. As shown in Figures 1 to 10, the temporary structure according to this embodiment comprises a plurality of columns 1 arranged in parallel along the outer wall of an object such as a building, engaging portions 2 provided at predetermined intervals along the height direction of the columns 1, cross braces 10 each having a pair of diagonal members 11, 12 spanning between the engaging portions 2 of adjacent columns 1, and additional engaging portions B provided on the cross braces 10 or on separate members A fixed to the cross braces 10, with reinforcing braces 3 separate from the cross braces 10 being connected to the additional engaging portions B. Note that in this specification, the term "front-rear direction" refers to the direction toward the outer wall of an object such as a building on which the temporary structure is to be constructed, as defined as "forward," and the direction opposite to the direction toward the outer wall as "rear."

[0020] The support 1 is a steel pipe to which flanges 2 are fixed as engaging portions at required intervals along its length. The support 1 has a predetermined length and can be extended sequentially along its length. As shown in Figures 4(a) and (b), the flange 2 is an annular metal plate member with four equally spaced locking holes 2a formed around its inner periphery. The inner periphery of the flange 2 is fixed to the support 1 by welding.

[0021] As shown in Figure 2, the cross brace 10 consists of a pair of diagonal members 11, 12 that are diagonally spanned between the flanges 2 at diagonal positions of adjacent columns 1, and a horizontal member 13 that is a separate member A from the cross brace 10 is connected between the upper ends of the pair of diagonal members 11, 12. Hereinafter, in this embodiment, the separate member A will be referred to as the horizontal member 13. The pair of diagonal members 11, 12 and the horizontal member 13 are made of cylindrical steel pipe material. The diagonal member 11 has a first locking portion 14 provided at one end (upper end) and a second locking portion 15 provided at the other end (lower end).

[0022] As shown in Figure 3, the first locking portion 14 is made of a triangular metal plate. The first locking portion 14 has a downward-facing hook 16 located on the outer side of the diagonal member 11 in the longitudinal direction, and a first connecting portion 17 serving as an additional engagement portion B formed above the hook 16 and extending upward from the first locking portion 14. The hook 16 is engaged with the locking hole 2a of the upper flange 2 of the diagonally opposite flanges 2 of adjacent posts 1. The first connecting portion 17 is formed by a through hole 17a and a hole portion consisting of the periphery of the through hole 17a. The hole portion of the first connecting portion 17 faces in a direction perpendicular to each of the pair of diagonal members 11 and 12. The end of the horizontal member 13 is connected to the first locking portion 14 by a pin 13a.

[0023] As shown in Figures 6(a) and 6(b), the second locking portion 15 includes a rectangular tube portion 18 located on the longitudinally outer side of the other end of the diagonal member 11, and a second connecting portion 19 extending downward from the rectangular tube portion 18 toward the other end of the diagonal member 11, serving as an additional engagement portion B. The rectangular tube portion 18 is open vertically and has a notch 18a formed perpendicular to the tube axis. The notch 18a is formed on the rectangular tube portion 18 from the side opposite the other end of the diagonal member 11 toward the diagonal member 11. The notch 18a has a vertical opening width that allows insertion of the flange 2. The second connecting portion 19 is formed by a through hole 19a and a hole portion consisting of the periphery of the through hole 19a. The through hole 19a faces perpendicular to each of the pair of diagonal members 11 and 12. Since the diagonal member 12 has the same structure as the diagonal member 11, it is given the same symbol as the diagonal member 11 and the description of its structure will be omitted.

[0024] The second locking portion 15 includes a wedge body 20 inserted into the rectangular tube portion 18 from above. The wedge body 20 is a bifurcated plate-like member having an engagement piece 20a and a support piece 20b extending downward. A stopper 20c is formed on the upper engagement piece 20a side of the wedge body 20, protruding from the engagement piece 20a toward the support 1. The engagement piece 20a extends downward less than the support piece 20b. When the flange 2 of the support 1 is inserted into the notch 18a, the engagement piece 20a of the wedge body 20 inserted into the rectangular tube portion 18 locks into the locking hole 2a of the flange 2 of the support 1. At this time, the support piece 20b of the wedge body 20 is positioned outside the flange 2 of the support 1 and supports the wedge body 20 within the rectangular tube portion 18 together with the stopper 20c.

[0025] In this embodiment, the horizontal member 13 is connected between the upper ends of the pair of diagonal members 11, 12, but it may also be connected between the lower ends of the pair of diagonal members 11, 12, for example.

[0026] The reinforcing brace 3 is composed of a pair of reinforcing diagonal members 4, 5, which are cylindrical steel pipes. The reinforcing diagonal members 4, 5 are arranged diagonally in opposite directions and are integrated with each other at the midpoint in the longitudinal direction where they intersect in an X shape. As shown in Figures 7 and 8, both ends of the reinforcing diagonal member 4 are formed by processing the steel pipe material into a flat shape, with the flat surfaces facing in the same direction (front-to-back direction). An engaging member 25 is provided on each end of the reinforcing diagonal member 4, on one side in the front-to-back direction.

[0027] As shown in Figures 9(a) and (b), each engaging member 25 has a fixed shaft portion 25a and an engaging piece 25b attached to the tip of the fixed shaft portion 25a. The fixed shaft portion 25a protrudes in the same direction from both ends of the reinforcing diagonal member 4. The fixed shaft portion 25a has a bifurcated portion formed inward in the longitudinal direction from the tip. The fixed shaft portion 25a is sized so that it can be inserted into the holes of the first connecting portion 17 and the second connecting portion 19 of the pair of diagonal members 11 and 12. A receiving surface portion 25c is formed on the base side between the bifurcated portions of the fixed shaft portion 25a. The receiving surface portion 25c is a flat surface facing the protruding direction of the fixed shaft portion 25a. The receiving surface portion 25c is inclined downward, away from the tip of the fixed shaft portion 25a. A support pin 25d is bridged between the bifurcated portions of the fixed shaft portion 25a.

[0028] The engaging piece 25b is a strip-shaped plate-like member. The engaging piece 25b has a longitudinally extending slot 25e and a locking surface 25f formed on one longitudinal end face. A support pin 25d is inserted into the slot 25e. The locking surface 25f is formed as a curved surface that slopes inward in the longitudinal direction from one widthwise end of the engaging piece 25b to the other widthwise end. The widthwise dimension of the engaging piece 25b is large enough to allow it to be inserted into the holes of the first connecting portion 17 and the second connecting portion 19 of the pair of diagonal members 11, 12.

[0029] Engagement piece 25b is supported by support pin 25d on fixed shaft portion 25a so as to be swingable and slidable along elongated hole 25c. In this supported state, locking surface portion 25f is located on the lower side, and the other end of engagement piece 25b in the width direction is located on the receiving surface portion 25c side of fixed shaft portion 25a. When locking surface portion 25f of pulled-up engagement piece 25b is rotated toward receiving surface portion 25c, locking surface portion 25f is received by receiving surface portion 25c. This engagement piece 25b is held by fixed shaft portion 25a at a position where its length direction coincides with the protruding direction of fixed shaft portion 25a (see FIGS. 10(a) and 10(b)).

[0030] The reinforcing diagonal member 5 has the same structure as the reinforcing diagonal member 4, and at both ends of the reinforcing diagonal member 5, engaging members 25 having the same structure as the engaging members 25 of the reinforcing diagonal member 4 are provided in the same orientation. For this reason, the reinforcing diagonal member 5 is given the same reference numeral as that given to the reinforcing diagonal member 4, and a description of its structure will be omitted.

[0031] The temporary structure according to this embodiment is configured as described above. Next, a method for constructing this temporary structure will be described. First, a plurality of pairs of front and rear support columns 1, 1 are arranged in parallel at predetermined intervals along the outer wall of an object such as a building. The lowest cross braces 10 are sequentially connected between adjacent support columns 1 in the parallel direction via flanges 2. Then, lower horizontal beams (not shown) are provided between each pair of front and rear support columns 1, 1 at a position higher than the lowest cross brace 10, and scaffolding boards X1 (see dashed lines in Figure 1) are spanned between the lower horizontal beams adjacent in the parallel direction to construct a lower level of scaffolding.

[0032] Next, the lower cross braces 10 are sequentially connected between the adjacent supports 1 in the parallel direction. The lower cross braces 10 have second locking portions 15 provided at the lower ends of the diagonal members 11 and 12 locked to flanges 2 located at the same height as the scaffolding board X1, and first locking portions 14 provided at the upper ends of the diagonal members 11 and 12 locked to flanges 2 located at a higher position than the scaffolding board X1.

[0033] Then, separate columns 1 are added as needed to extend the height of each column 1. Furthermore, upper horizontal beams (not shown) are installed between the pair of front and rear columns 1, 1, at a position higher than the lower cross braces 10. The upper cross braces 10 are then sequentially connected between adjacent columns 1 in the parallel direction. The second locking portions 15 provided at the lower ends of the diagonal members 11, 12 of the upper cross braces 10 are locked to flanges 2 located at the same height as the upper horizontal beam, and the first locking portions 14 provided at the upper ends of the diagonal members 11, 12 are locked to flanges 2 located higher than the upper horizontal beam. After connecting the upper cross braces 10, scaffolding boards X2 (see dashed lines in Figure 1 ) are placed between the upper horizontal beams adjacent in the parallel direction to construct the upper scaffolding. These steps are repeated to sequentially construct multiple vertically arranged scaffolding levels.

[0034] Next, after constructing a multi-tiered scaffolding in the vertical direction, the reinforcing braces 3 are connected between the upper and lower cross braces 10. The reinforcing braces 3 are connected to the upper cross braces 10 as follows. First, as shown in FIG. 7(a), the engaging member 25 provided at the upper end of the reinforcing diagonal member 4 is positioned so that the length direction of its engaging piece 25b and the protruding direction of its fixed shaft 25a are aligned. The engaging member 25 in this state is inserted into the through-hole 19a of the second connecting portion 19 of the second locking portion 15 of the diagonal member 12. The inserted engaging piece 25b slides downward under its own weight by rotating the tip end opposite the locking surface 25f upward (see FIG. 7(b)). This sliding position positions the support pin 25d of the fixed shaft 25a at the upper end of the elongated hole 25e of the engaging piece 25b. As a result, the upper end of the reinforcing diagonal member 4 of the reinforcing brace 3 engages with the second connecting portion 19 of the second locking portion 15 of the diagonal member 12, and is connected to the upper cross brace 10. Similarly, the upper end of the reinforcing diagonal member 5 of the reinforcing brace 3 engages with the second connecting portion 19 of the second locking portion 15 of the diagonal member 11 via the engaging member 25, and is connected to the upper cross brace 10.

[0035] Next, the reinforcing diagonal brace 3 is connected to the lower cross brace 10 as follows. First, the engaging member 25 attached to the lower end of the reinforcing diagonal member 4 is aligned with the longitudinal direction of its engaging piece 25b and the protruding direction of its fixed shaft 25a. The engaging member 25 in this state is inserted into the through-hole 17a of the first connecting portion 17 of the first locking portion 14 of the diagonal member 12. Then, by the same action as the engaging member 25 attached to the upper end of the reinforcing diagonal member 4 described above, the lower end of the reinforcing diagonal member 4 of the reinforcing diagonal brace 3 engages with the first connecting portion 17 of the first locking portion 14 of the diagonal member 12 via the engaging member 25, thereby connecting it to the lower cross brace 10 (see Figure 8). Similarly, the lower end of the reinforcing diagonal member 5 of the reinforcing diagonal brace 3 engages with the first connecting portion 17 of the first locking portion 14 of the diagonal member 11 via the engaging member 25, thereby connecting it to the lower cross brace 10.

[0036] In this manner, the reinforcing braces 3 are connected between the upper cross braces 10 and the lower cross braces 10, and the temporary structure according to this embodiment is constructed.

[0037] Instead of the engaging members 25 provided at both ends of the reinforcing diagonal members 4 and 5 of the reinforcing brace 3, fixing holes may be provided. In this case, the reinforcing brace 3 can be connected between the upper cross brace 10 and the lower cross brace 10 by fastening with bolts and nuts.

[0038] In the temporary structure according to this embodiment, a pair of diagonal members 11, 12 of the cross brace 10 has a first connecting portion 17 at one end and a second connecting portion 19 at the other end. Therefore, the pair of reinforcing diagonal members 4, 5 of the reinforcing brace 3 can be easily connected between the first connecting portion 17 and the second connecting portion 19. Furthermore, since the reinforcing brace 3 can be easily connected, the durability of the temporary structure according to this embodiment against horizontal forces such as earthquakes that it receives can be improved.

[0039] In addition, first connecting portions 17 extend upward from the first locking portions 14 of the pair of diagonal members 11, 12. This allows the reinforcing diagonal members 4, 5 of the reinforcing brace 3 to be connected directly above the lower cross brace 10. In addition, second connecting portions 19 extend downward from the second locking portions 15 of the pair of diagonal members 11, 12. This allows the reinforcing diagonal members 4, 5 of the reinforcing brace 3 to be connected directly below the upper cross brace 10.

[0040] When the reinforcing diagonal members 4, 5 of the reinforcing brace 3 are connected to the upper and lower cross braces 10 in this way, the reinforcing brace 3 does not protrude to the inside of the width direction of the scaffolding board attached to the temporary structure, which makes it possible to secure space for work and passage within the temporary structure.

[0041] In the above embodiment, the cross brace 10 is described as having the first connecting portion 17 provided on the first retaining portion 14 of the pair of diagonal members 11 and 12, as shown in FIG. 2. For example, as shown in FIGS. 11 and 12, the first connecting portion 17 may be provided on both longitudinal sides of the horizontal member 13. In this case, for example, it is not necessary to change the first retaining portions 14 of the pair of diagonal members 11 and 12 to those provided with the first connecting portion 17. Therefore, a pair of conventional diagonal members having only hooks at their upper ends can be used as the pair of diagonal members 11 and 12 of the cross brace 10. Furthermore, the reinforcing brace can be connected at a position away from the support 1.

[0042] In the above embodiment, as shown in Figures 7 and 8, the reinforcing brace 3 in which engaging members 25 are provided at both ends of the reinforcing diagonal members 4 and 5 has been described as an example. For example, as shown in Figure 13, a reinforcing brace 6 can be adopted as another form of the reinforcing brace 3. This reinforcing brace 6 differs from the reinforcing brace 3 in that it has a shaft-shaped hook 26 instead of the engaging members 25 provided at the lower ends of the reinforcing diagonal members 4 and 5, and in that bent portions 27 and 28 are formed near both ends of the reinforcing diagonal members 4 and 5. Below, the differences between the reinforcing brace 6 and the reinforcing brace 3 will be described.

[0043] The bent portions 27, 28 are formed near the ends of the reinforcing diagonal members 4, 5. The bent portion 27 connects the ends of the reinforcing diagonal member 4 in a state where it is offset to one side in the fore-and-aft direction relative to the intermediate portion of the reinforcing diagonal member 4. The bent portion 28 connects the ends of the reinforcing diagonal member 5 in a state where it is offset to the other side in the fore-and-aft direction relative to the intermediate portion of the reinforcing diagonal member 5. These bent portions 27, 28 make the ends of the reinforcing diagonal members 4, 5 parallel to the axis of the intermediate portion of the reinforcing diagonal members 4, 5 and facing in the fore-and-aft direction. The both ends of the reinforcing diagonal members 4, 5 are located longitudinally outward of the intermediate portion of the reinforcing diagonal members 4, 5.

[0044] The shaft-shaped hook 26 is provided on one side in the front-to-rear direction of the lower end of the reinforcing diagonal members 4, 5. The shaft-shaped hook 26 protrudes in one direction in the front-to-rear direction, and its tip extends downward via a curved portion so that it faces outward in the up-down direction. The shaft-shaped hook 26 has a size that allows it to be inserted into the holes of the first connecting portion 17 and the second connecting portion 19 of the pair of diagonal members 11, 12.

[0045] The engaging member 25 is provided on one side in the front-to-rear direction of the upper ends of the reinforcing diagonal members 4, 5. Such reinforcing braces 6 cross in an X shape with the reinforcing diagonal member 4 located on one side in the front-to-rear direction relative to the reinforcing diagonal member 5. The reinforcing diagonal members 6 are arranged such that the upper ends and lower ends of the reinforcing diagonal members 4, 5 are located on the inner side in the front-to-rear direction.

[0046] The reinforcing brace 6 is configured as described above. Next, a method for connecting the reinforcing brace 6 between the upper cross brace 10 and the lower cross brace 10 will be described with reference to the drawings.

[0047] First, the lower ends of the reinforcing diagonal members 4, 5 are brought close to the lower cross brace 10, and the upper ends of the reinforcing diagonal members 4, 5 are moved away from the upper cross brace 10, so that the reinforcing diagonal members 6 are held in an inclined position. At this time, the shaft-shaped hooks 26 of the reinforcing diagonal members 4, 5 are positioned on the side of the lower cross brace 10.

[0048] While holding the reinforcing brace 6 in an inclined position, as shown in Figure 18(a), the tip of the axial hook 26 of the reinforcing diagonal member 4 is inserted into the first connecting part 17 of the diagonal member 12 of the lower cross brace 10. Also, the tip of the axial hook 26 of the reinforcing diagonal member 5 is inserted into the first connecting part 17 of the diagonal member 11 of the lower cross brace 10.

[0049] 18(b), the upper ends of the reinforcing diagonals 4 and 5 are gradually brought closer to the upper cross brace 10, and the reinforcing diagonal brace 6 is lifted so that its inclination in the vertical direction becomes smaller. Here, the tip portions of the axial hooks 26 extend downward. Therefore, the curved portions of the axial hooks 26 of the reinforcing diagonals 4 and 5 are engaged with the first connecting portions 17 of the diagonal members 11 and 12 of the lower cross brace 10. This engagement allows the reinforcing diagonal brace 6 to maintain a state in which the lower ends of the reinforcing diagonals 4 and 5 are supported by the first connecting portions 17 of the diagonal members 11 and 12.

[0050] Furthermore, the upper ends of the reinforcing diagonals 4 and 5 are brought closer to the upper cross brace 10. Then, in the same manner as in the case of the reinforcing diagonal brace 3, the upper ends of the reinforcing diagonal braces 4 and 5 are engaged with the second connecting portions 19 of the diagonal braces 11 and 12 of the upper cross brace 10 via the engaging members 25. In this way, the reinforcing diagonal brace 6 is connected between the upper cross brace 10 and the lower cross brace 10.

[0051] This reinforcing brace 6 can be tilted and the axial hooks 26 of the reinforcing diagonal members 4 and 5 can be inserted into the holes of the first connecting portions 17 of the diagonal members 11 and 12 of the lower cross brace 10, so that the axial hooks 26 can easily engage with the first connecting portions 17.

[0052] Furthermore, as another form of reinforcing brace 3, the reinforcing brace 6 has been described as an example in which an axial hook 26 is provided instead of the engaging member 25 at the lower end of the reinforcing diagonal members 4 and 5, and bent portions 27 and 28 are formed near both ends of the reinforcing diagonal members 4 and 5. However, as shown in Figure 19, a reinforcing brace 7 may also be used in which an axial hook 26 is provided instead of the engaging member 25 at the upper end of the reinforcing diagonal members 4 and 5, and bent portions 27 and 28 are formed near both ends of the reinforcing diagonal members 4 and 5.

[0053] In this reinforcing brace 7, the shaft-shaped hook 26 is provided on one side in the front-to-rear direction of the upper end of the reinforcing diagonal members 4, 5. The shaft-shaped hook 26 protrudes in one direction in the front-to-rear direction, and its tip extends upward via a curved portion so that it faces outward in the vertical direction. The engaging member 25 is provided on one side in the front-to-rear direction of the lower end of the reinforcing diagonal members 4, 5. The other structures are the same as those of the reinforcing brace 6, so the same reference numerals are used and their explanations are omitted.

[0054] In the reinforcing brace 7, the upper ends of the reinforcing diagonals 4, 5 are brought close to the upper cross brace 10, and the lower ends of the reinforcing diagonals 4, 5 are separated from the lower cross brace 10 and held in an inclined position. Then, the tip portions of the axial hooks 26 are engaged with the second connecting portions 19 of the diagonals 11, 12 of the upper cross brace 10, respectively, to bring the lower ends of the reinforcing diagonals 4, 5 close to the lower cross brace 10. Then, in the same manner as in the reinforcing brace 3, the lower ends of the reinforcing diagonals 4, 5 are engaged with the first connecting portions 17 of the diagonals 11, 12 of the lower cross brace 10 via the engaging members 25. In this way, the reinforcing brace 7 can be connected between the upper cross brace 10 and the lower cross brace 10.

[0055] As shown in Figure 20, the temporary structure of this embodiment may also include an additional handrail 21 located between the support columns 1 and above the uppermost cross brace 10. As shown in Figure 21, the additional handrail 21 has a horizontal member portion 22 that is located horizontally and inclined member portions 23, 24 that are formed integrally with both longitudinal ends of the horizontal member portion 22. The horizontal member portion 22 is made of a cylindrical steel pipe. The inclined member portion 23 is formed integrally with one end of the horizontal member portion 22 and extends downward toward the outside in the longitudinal direction of the horizontal member portion 22. The inclined member portion 23 has an engaging member 25 that engages with the first connecting portion 17 of the diagonal member 11.

[0056] The inclined member portion 24 is formed integrally with the other end of the horizontal member portion 22 and extends downward toward the outside in the longitudinal direction of the horizontal member portion 22. The inclined member portion 24 has an engaging member 25 that engages with the first connecting portion 17 of the diagonal member 12. The engaging members 25 of the inclined members 23, 24 have the same structure as the engaging members 25 provided at both ends of the reinforcing diagonal members 4, 5 described above, with the only difference being that the fixing shaft portion 25a protrudes in the opposite direction. For this reason, the engaging members 25 of the inclined members 23, 24 are given the same reference numerals as the engaging members 25 of the reinforcing diagonal members 4, 5, and their description will be omitted.

[0057] The additional handrail 21 is connected between the support posts 1 above the uppermost cross brace 10 as follows. First, as shown in Figure 23, the engaging member 25 of the inclined member section 23 is positioned so that the length direction of its engaging piece 25b and the protruding direction of the fixed shaft 25a are aligned. The engaging member 25 in this state is inserted into the through-hole 17a of the first connecting portion 17 of the first locking portion 14 of the diagonal member 11. The inserted engaging piece 25b slides downward under its own weight by rotating the tip end opposite the locking surface 25f upward (see Figure 22). This sliding position positions the support pin 25d of the fixed shaft 25a at the upper end of the elongated hole 25c of the engaging piece 25b. This causes the inclined member section 23 to engage with the first connecting portion 17 of the first locking portion 14 of the diagonal member 11. Similarly, the inclined member portion 24 engages with the first connecting portion 17 of the first locking portion 14 of the diagonal member 12 via the engaging member 25. In this way, the additional handrail 21 is connected above the uppermost cross brace 10.

[0058] The horizontal member 22 of this additional handrail 21 is located higher than the horizontal member 13 of the uppermost cross brace 10. This increases the rigidity between the supports 1 in the temporary structure. Furthermore, it improves the safety of workers when they move on the scaffolding planks.

[0059] 24 and 25 show another form of additional handrail 21. This other form of additional handrail 31 comprises a pair of additional diagonal members 32, 33 placed diagonally between the support posts 1, and an additional horizontal member 34 spanning one end of the pair of additional diagonal members 32, 33. One end of the pair of additional diagonal members 32, 33 has a hook portion 35 that can engage with the locking hole 2a in the flange 2 of the support post 1.

[0060] The additional handrail 31 is placed between the posts 1 and connected above the uppermost cross brace 10. The hook portions 35 provided on the pair of additional diagonal members 32, 33 are engaged with a flange 2 that is higher than the flange 2 to which the hook 16 of the uppermost cross brace 10 is engaged. The lower ends of the pair of additional diagonal members 32, 33 are connected via the first connecting portion 17 of the uppermost cross brace 10 by fastening bolts and nuts. The above-mentioned engaging member 25 may be provided on the other end of the pair of additional diagonal members 32, 33.

[0061] In this way, in the temporary structure, the additional handrail 31 is connected between the columns 1 and above the uppermost cross brace 10. The additional horizontal member 34 of this additional handrail 31 is provided at a higher position than the horizontal member 13 of the uppermost cross brace 10. For this reason, just as in the case where the additional handrail 21 is attached, the rigidity between the columns 1 in the temporary structure can be increased, improving the safety of workers when moving on the scaffolding planks. [Explanation of symbols]

[0062] 1 post 2 Flange (engagement part) 2a Locking hole 3, 6, 7 Reinforced braces 4, 5 Reinforcing diagonal members 10 Cross braces 11, 12 Diagonal members 13 Horizontal material 14 First locking portion 15 Second locking part 16 Hook 17 First connection part 17a Through hole 18 Square tube part 18a notch 19 Second connection part 19a Through hole 20 cuneiform 20a Engagement piece 20b Support piece 21, 31 Additional handrails 22 Horizontal section 23, 24 Inclined section 25 Engagement member 25a Fixed shaft part 25b Engagement piece 26 Axial Hook 27, 28 Bend 32, 33 Additional diagonal members 34 Additional horizontal members 35 Hook part A Separate material B Additional engagement part X1, X2 scaffolding boards

Claims

1. Multiple parallel support columns (1, 1) A plurality of engagement portions (2) provided along the height direction of the support columns (1, 1); A cross brace (10) including a pair of diagonal members (11, 12) that are bridged between the engaging portions (2) of the adjacent supports (1, 1); and an additional engagement portion (B) provided on the cross brace (10) or a separate member (A) fixed to the cross brace (10), A reinforcing brace (3) other than the cross brace (10) is connected to the additional engagement portion (B), The additional engagement portion (B) is a temporary structure that is a first connecting portion (17) provided at the upper ends of a pair of diagonal members (11, 12).

2. Multiple parallel support columns (1, 1) A plurality of engagement portions (2) provided along the height direction of the support columns (1, 1); A cross brace (10) including a pair of diagonal members (11, 12) that are bridged between the engaging portions (2) of the adjacent supports (1, 1); and an additional engagement portion (B) provided on the cross brace (10) or a separate member (A) fixed to the cross brace (10), A reinforcing brace (3) other than the cross brace (10) is connected to the additional engagement portion (B), The additional engagement portion (B) is a temporary structure that is a second connecting portion (19) provided at the lower ends of a pair of diagonal members (11, 12).

3. Multiple parallel support columns (1, 1) A plurality of engagement portions (2) provided along the height direction of the support columns (1, 1); A cross brace (10) including a pair of diagonal members (11, 12) that are bridged between the engaging portions (2) of the adjacent supports (1, 1); and an additional engagement portion (B) provided on the cross brace (10) or a separate member (A) fixed to the cross brace (10), A reinforcing brace (3) other than the cross brace (10) is connected to the additional engagement portion (B), The system further includes an additional handrail (21) disposed between the support posts (1), the additional handrail (21) having a horizontal member portion (22) and inclined member portions (23, 24) formed downward on both sides of the horizontal member portion (22) in the length direction, A temporary structure in which the inclined material portions (23, 24) are connected to an additional engagement portion (B).

4. Multiple parallel support columns (1, 1) A plurality of engagement portions (2) provided along the height direction of the support columns (1, 1); A cross brace (10) including a pair of diagonal members (11, 12) that are bridged between the engaging portions (2) of the adjacent supports (1, 1); and an additional engagement portion (B) provided on the cross brace (10) or a separate member (A) fixed to the cross brace (10), A reinforcing brace (3) other than the cross brace (10) is connected to the additional engagement portion (B), The additional engagement portion (B) is a first connecting portion (17) provided at the upper end of a pair of diagonal members (11, 12), The additional engagement portion (B) is a temporary structure that is a second connecting portion (19) provided at the lower ends of a pair of diagonal members (11, 12).

5. 5. A temporary structure according to any one of claims 1 to 4, wherein the separate member (A) is a horizontal member (13) connected between the upper ends of a pair of diagonal members (11, 12).

6. The structure further includes an additional handrail (31) disposed between the support columns (1), and the additional handrail (31) has a pair of additional diagonal members (32, 33) disposed diagonally between the support columns (1), and an additional horizontal member (34) bridged between the upper ends of the pair of additional diagonal members (32, 33), A temporary structure as described in any one of claims 1, 2, or 4, wherein the upper ends of the pair of additional diagonal members (32, 33) are engaged with the engagement portion (2) of the support (1), and the lower ends of the pair of additional diagonal members (32, 33) are connected to the additional engagement portion (B).

7. A temporary structure as described in any one of claims 1 to 4, wherein the reinforcing brace comprises a pair of reinforcing diagonal members (4, 5), and the upper or lower ends of the pair of reinforcing diagonal members (4, 5) have hooks (26) that engage with the additional engagement portion (B), and the hooks (26) have an axial portion that protrudes toward the additional engagement portion (B) and a tip portion that extends outward in the vertical direction from the axial portion.

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