Support structure for scaffolding on steel pipe columns

Abstract

To reduce the number of required members by avoiding contact between a gripper and a scaffold board while arranging a frame material for supporting the scaffold board so as to surround a steel pipe column.SOLUTION: In a support structure of scaffolds for steel pipe columns, a horizontal attaching material 3 is connected to a plate 2 welded to the surfaces of opposing flanges 1a, 1a of a steel pipe column 1 at a distance in the horizontal direction, a frame material 5 having a lower horizontal material 51 and an upper horizontal material 52 vertically arranged in parallel is erected between axial both ends of two horizontal attaching materials 3, 3 arranged on the surface side of each flange 1a to connect the lower horizontal material 51 to the horizontal attaching material 3, a horizontal receiving material 8 is erected on two frame materials 5, 5 arranged across the steel pipe column 1 and connected to the upper horizontal material 52, and a scaffold plate 9 is placed and supported on the horizontal receiving material 8 and the upper horizontal material 52.SELECTED DRAWING: Figure 5

Description

Technical Field

[0003]

[0001] The present invention relates to a support structure for a scaffold on a steel pipe column, which supports a scaffold board around the steel pipe column.

Background Art

[0002] In performing the joining of a beam to a steel pipe column and the joining of steel pipe columns to each other, it is necessary to arrange a scaffold around the steel pipe column and support it on the steel pipe column (see Patent Documents 1 to 4). The support members that are joined to the surface of the steel pipe column and support the scaffold may be bolted to the surface of the steel pipe column (Patent Documents 1 and 3) or welded (Patent Documents 2 and 4).

[0003] In any case, since the scaffold board is directly or indirectly supported by a support member such as a bracket, it is necessary to make the scaffold board and the support member fit together so that there is no obstacle to the support of the scaffold board by the support member. Specifically, it is necessary to combine the scaffold board with the support member so that the scaffold board does not contact (interfere) with any part of the support member.

[0004] Also, in order to stably support the scaffold board on the steel pipe column, it is appropriate not only to join the support member to the surface of the opposing side (flange) of the steel pipe column, but also to mutually restrain the framing members that directly support the scaffold board. For this reason, it is reasonable to arrange the framing members in two directions so as to surround the steel pipe column and support one of the framing members in one direction by the support member (Patent Document 4).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

[0006] When frame members are arranged in two directions around a steel pipe column, the frame members in the perpendicular direction are basically joined to the frame members in one direction using clamps or other gripping devices (paragraph 0028, Figure 4). As a result, the gripping devices tend to protrude from the periphery of the frame members, making it easy for the scaffolding planks to come into contact with the gripping devices.

[0007] Furthermore, in the example of Patent Document 4, a frame member in one direction is supported by a support member (hanging member) supported on the opposing sides of a steel pipe column. However, since the support member is divided into parallel support rods, and the frame member in one direction is supported by inserting both support rods, the number of parts required to arrange frame members in two directions is increased.

[0008] Based on the above background, the present invention proposes a scaffolding board support structure that allows for the arrangement of frame members to support the scaffolding board so as to surround the steel pipe column, while avoiding contact between the gripping device and the scaffolding board, and reducing the number of parts. [Means for solving the problem]

[0009] The scaffolding support structure for a steel pipe column according to claim 1 is characterized in that a horizontal support member is connected to a plate having an opening, which is welded horizontally at a distance from each of the opposing flanges of the steel pipe column, by inserting the opening into the plate. A frame member is erected, passing between the axial ends of the two horizontal support members arranged on the surface side of each flange, and having a lower horizontal member and an upper horizontal member that are parallel to each other vertically and a connecting member that connects these two horizontal members, and the lower horizontal member is connected to the horizontal support member, Horizontal support members are installed between the two upper horizontal members of the frame members, which are positioned on either side of the steel pipe column, and connected to the upper horizontal members. The scaffolding board is positioned and supported on the aforementioned horizontal support member and the aforementioned upper horizontal member of the frame member.

[0010] "Plates welded horizontally at intervals to the surfaces of opposing flanges of a steel pipe column" means that, as shown in Figures 1-(a) and 1-(c), multiple plates 2, 2 are welded horizontally at intervals to the surfaces of two opposing flanges 1a, 1a of the steel pipe column 1, which face each other in either direction. The multiple plates 2, 2 are welded to the flanges 1a with their in-plane direction facing the vertical and their faces facing each other. The steel pipe column is mainly a rectangular steel pipe column.

[0011] The horizontal support member 3 is inserted through an opening 2a formed in the plate 2 and supported by multiple plates 2. The horizontal support member 3 is connected to the plate 2 by gripping devices 4 such as single clamps. By being connected to the plate 2, the horizontal support member 3 is restrained by the plate 2 and restrained by the steel pipe column 1. The horizontal support member 3 extends from each plate 2 on each flange 1a of the steel pipe column 1 toward the outer circumference of the steel pipe column 1 for a distance equivalent to or greater than the width of the scaffolding board 9 that is positioned toward the outer circumference of the steel pipe column 1. "Along the outer circumference of the steel pipe column" means toward the side furthest from the center of the steel pipe column 1.

[0012] The horizontal support members 3 are arranged parallel to the steel pipe column 1, and the frame member 5 is erected between the ends of these two horizontal support members 3, 3 as shown in Figure 2-(a), and is supported by both horizontal support members 3, 3. "Passing between the ends of the horizontal support members" means that the frame member 5 is erected between the two horizontal support members 3, 3 with its axial end extending outward in the axial direction from the end of the horizontal support member 3.

[0013] As shown in Figure 2-(b), the frame member 5 has a lower horizontal member 51 and an upper horizontal member 52 that are arranged in parallel vertically, and a connecting member 53 that connects these two horizontal members 51 and 52. The lower horizontal member 51 is connected to and supported by the horizontal support member 3. The lower horizontal member 51 is connected to the horizontal support member 3 by a gripping device 6 such as an orthogonal clamp.

[0014] The frame member 5 is connected to horizontal support members 3, 3 on both sides of the steel pipe column 1, and is therefore restrained by the horizontal support members 3, 3, and indirectly restrained by the steel pipe column 1. The frame member 5 extends from the ends of the horizontal support members 3 toward the outer circumference of the steel pipe column 1 by a distance equivalent to or greater than the width of the scaffolding board 9 that is positioned on the outer circumference of the steel pipe column 1.

[0015] As shown in Figure 4-(a), horizontal support members 8 that support the scaffolding board 9 are erected on both sides of the steel pipe column 1, between the upper horizontal members 52, 52 of the two frame members 5, 5 positioned on either side of the steel pipe column 1, and are connected to the upper horizontal members 52, 52. "Positions on both sides of the steel pipe column" refers to positions closer to the steel pipe column 1 than the axial ends of the upper horizontal members 52. Since the horizontal support members 8 are erected between the upper horizontal members 52, 52, they are erected in a direction perpendicular to the upper horizontal members 52, 52. The horizontal support members 8 are connected to the upper horizontal members 52 with gripping devices 4 such as single clamps.

[0016] The horizontal support member 8 is restrained by the frame member 5 by being connected to the upper horizontal member 52, and indirectly restrained by the steel pipe column 1. The horizontal support member 8 is installed between the upper horizontal members 52, 52 of the frame member 5 in a manner with no substantial difference in height, and together with the upper horizontal member 52, it supports the scaffolding board 9.

[0017] Since the horizontal support member 8 is supported by the upper horizontal member 52 of the frame member 5, the upper horizontal member 52 is positioned above the lower horizontal member 51 of the frame member 5, which is connected to the horizontal reinforcing member 3. This eliminates interference between the gripping device 4, which connects the horizontal reinforcing member 3 to the plate 2, and the horizontal support member 8. Consequently, interference between the scaffolding board 9, which is placed on the horizontal support member 8, and the plate 2 and gripping device 4 is avoided, and the placement area of ​​the scaffolding board 9 is no longer restricted as it would be if interference with these components occurred.

[0018] Furthermore, since the components required to support the scaffolding board 9 consist of at least three types of components, excluding the plate 2—the horizontal support member 3, the frame member 5, and the horizontal support member 8—the number of components required to support the scaffolding board 9 is reduced compared to Patent Document 4. By reducing the number of components required, the number of tasks involved in assembling and disassembling the components required to support the scaffolding board 9 is reduced, improving the efficiency of each task.

[0019] The width of the scaffolding board 9, which is assumed to be supported by the frame material 5 and the horizontal support material 8, may vary depending on the dimensions of the steel pipe column 1 or on each site. Therefore, by connecting the horizontal support material 8 to the upper horizontal material 52 in a manner that allows for free adjustment of the axial connection position of the upper horizontal material 52 (Claim 2), it becomes possible to accommodate differences in the width of the scaffolding board 9, i.e., differences in the dimensions of the steel pipe column 1 and on each site. The ability to freely adjust the connection position of the horizontal support material 8 in the axial direction of the upper horizontal material 52 is made possible by connecting the gripping device 4 that connects the horizontal support material 8 to the upper horizontal material 52 in a manner that allows for axial movement relative to the upper horizontal material 52.

[0020] In addition, by connecting the horizontal support member 8 to the upper horizontal member 52 of the frame member 5, the levels of the horizontal support member 8 supporting the scaffolding board 9 and the upper surface (upper end) of the upper horizontal member 52 can be aligned, as shown in Figure 4-(b). This makes it possible to lay the two scaffolding boards 9, 9 arranged around the steel pipe column 1 at the same level and to align the upper surfaces of both scaffolding boards 9, 9. Because the two scaffolding boards 9, 9 can be laid at the same level, it becomes unnecessary to fix them, for example with wire, to restrain the movement of at least one of the scaffolding boards 9, as is the case when they cannot be laid at the same level. The scaffolding board 9 is supported by the frame member 5, etc., for example by engaging a hook 93 connected to the end in the longitudinal direction with the upper horizontal member 52, etc.

[0021] In addition, by installing the horizontal receiving members 8 on both sides of the steel pipe column 1, as shown in Fig. 4-(a), on the plane, the horizontal receiving members 8 are located closer to the steel pipe column 1 than the axial ends of the frame members 5, and the overhanging length (cantilever beam length) from the connection position with the horizontal receiving members 8 at the ends of the frame members 5 becomes larger. As a result, when the scaffold board 9 is laid between the ends of the frame members 5, 5 facing each other across the steel pipe column 1, instability may occur in the stability of the ends of the frame members 5. In such a case, as shown in Fig. 3-(a), two horizontal connecting members 7 for ensuring the stability of the two frame members 5, 5 are installed and connected between the ends of the two frame members 5, 5 (Claim 3).

[0022] The horizontal connecting member 7 is installed between the axial both ends of the lower horizontal member 51 or between the axial both ends of the upper horizontal member 52. In particular, as shown in Figs. 3-(a) and (c), if the horizontal connecting member 7 is installed between the axial both ends of the lower horizontal member 51 (Claim 3), it is possible to avoid the gripping tool 4 for connecting the horizontal connecting member 7 to the frame member 5 becoming an obstacle to the installation of the scaffold board 9. In this case, since the horizontal connecting member 7 is connected to the lower horizontal member 51, it is possible to avoid a part of the gripping tool 4 used for the connection from affecting the upper horizontal member 52. Therefore, when the scaffold board 9 is installed on the upper horizontal member 52, it is possible to avoid the scaffold board 9 interfering with the gripping tool 4. The horizontal connecting member 7 is connected to the lower horizontal member 51 by a gripping tool 4 such as a single clamp.

[0023] Also, as shown in Fig. 2-(b), the upper parts of the connecting members 53 on both axial sides of the frame member 5 are protruded upward from the upper surface of the upper horizontal member 52, and if the upper parts of the protruded connecting members 53 can be directly or indirectly connected to the columns 10 arranged at the corner parts on the plane of the frame member 5 (Claim 4), it becomes possible to erect the columns 10 on the frame member 5 and install the handrail member 11 between the upper parts of the columns 10.

[0024] Here, if the upper part of the connecting member 53 that protrudes upward from the upper horizontal member 52 is formed, for example, in a cylindrical shape (hollow shape), as shown in FIGS. 6-(b) and (c), the support column 10 is lowered from above the connecting member 53, and the connecting member 53 is inserted into the inner circumference of the support column 10, or the support column 10 is inserted into the inner circumference of the connecting member 53, or both are screwed together, so that the support column 10 can be connected to the connecting member 53.

[0025] When the support column 10 is externally connected to the connecting member 53, the support column 10 can be lowered or screwed while remaining in contact with the outer circumference of the connecting member 53, so as to be connected to the connecting member 53. Therefore, the connecting member 53 does not necessarily have to be formed in a cylindrical shape. In this case, since the support column 10 can be dropped from above into the connecting member 53 for connection, compared with the case of using a gripping tool for connecting the two, the installation and connection operations of the support column 10 are simplified, and thus the workability and safety are improved.

Advantages of the Invention

[0026] A frame member having a lower horizontal member and an upper horizontal member is installed between the axial both ends of two horizontal attachment members connected to each surface of the opposing flanges of the steel pipe column, and the lower horizontal member is connected to the horizontal attachment member. A horizontal receiving member is installed and connected between the upper horizontal members of the two frame members, so that the upper horizontal member can be positioned above the lower horizontal member connected to the horizontal attachment member. Therefore, interference between the gripping tool for connecting the horizontal attachment member to the plate fixed to the flange of the steel pipe column and the horizontal receiving member can be avoided. As a result, interference between the scaffold board placed on the horizontal receiving member, the plate, and the gripping tool is avoided, and the limitation of the placement area of the scaffold board when interference occurs can be eliminated.

[0027] In addition, in addition to the plate, at least three types of members, namely, the horizontal attachment member, the frame member, and the horizontal receiving member, are required to support the scaffold board. Therefore, the number of necessary members for supporting the scaffold board can be reduced, the number of operations during assembly and disassembly of the members for supporting the scaffold board can be reduced, and the working efficiency of each operation can be improved.

Brief Description of the Drawings

[0028] [Figure 1] (a) is a plan view showing how horizontal bracing members are connected to plates welded to the surfaces of opposing flanges of a steel pipe column, (b) is a view taken along line xx in (a), and (c) is a view taken along line yy in (a). [Figure 2] (a) is a plan view showing a frame member being erected with connecting members that connect the lower horizontal member and the upper horizontal member to the horizontal member, passing between the axial ends of two horizontal support members, and the lower horizontal member being connected to the horizontal support member; (b) is a view of (a) along line xx; and (c) is a view of (a) along line yy. [Figure 3] (a) is a plan view showing how horizontal connecting members are installed and connected between the axial ends of the lower horizontal members of two frame members, (b) is a view of (a) along line xx, and (c) is a view of (a) along line yy. [Figure 4] (a) is a plan view showing how horizontal support members are installed and connected between the steel pipe columns on the upper horizontal members of the two frame members, (b) is a view taken along line xx in (a), and (c) is a view taken along line yy in (a). [Figure 5] (a) is a plan view showing the scaffolding planks laid on top of the horizontal support members and the upper horizontal members of the frame members, (b) is a view taken along the xx line in (a), and (c) is a view taken along the yy line in (a). [Figure 6] (a) is a plan view showing how the upper part of the connecting member of the frame material protrudes above the upper surface of the upper horizontal member, and how the support column is connected to this upper part; (b) is a view taken along line xx in (a); and (c) is a view taken along line yy in (a). [Figure 7] (a) is a plan view showing a handrail installed between the tops of adjacent support columns, (b) is a view taken along line xx in (a), and (c) is a view taken along line yy in (a). [Figure 8] (a) is a plan view showing the installation of toeboards on the outer perimeter of scaffolding planks in two directions, (b) is a view taken along line xx in (a), and (c) is a view taken along line yy in (a). [Figure 9] (a) is a plan view showing the scaffolding planks after they have been installed, with two frame members attached to one side of the steel pipe column; (b) is a view taken along the xx line in (a); and (c) is a view taken along the yy line in (a). [Figure 10] (a) is a plan view showing the state after the scaffolding planks have been installed in the example of Figure 9, where space has been secured between the steel pipe column and the scaffolding planks; (b) is a view taken along the xx line in (a); and (c) is a view taken along the yy line in (a). [Modes for carrying out the invention]

[0029] Figure 4 shows a configuration in which horizontal support members 3 are connected to plates 2 welded horizontally at a distance from each other on the opposing flanges 1a, 1a of the steel pipe column 1, frame members 5, 5 are erected and connected between the axial ends of the two horizontal support members 3, 3 located on both sides of the flanges 1a, 1a of the steel pipe column 1, and horizontal support members 8 are erected and connected between the two frame members 5, 5.

[0030] As shown in Figure 2-(b), the frame member 5 has a lower horizontal member 51 and an upper horizontal member 52 that are arranged in parallel vertically, and a connecting member 53 that serves as a vertical member (or similar) to connect the two horizontal members 51 and 52. The horizontal support member 8 is erected parallel to the horizontal support member 3 between the positions on both sides of the steel pipe column 1 on the upper horizontal member 52 of the two frame members 5, 5. "Positions on both sides" means positions closer to the steel pipe column 1. The frame member 5 is placed on and connected to the horizontal support member 3 at the lower horizontal member 51.

[0031] Figures 1 to 4 show the work procedure from connecting the horizontal support members 3 to erecting the horizontal support members 8, and Figure 5 shows the scaffolding boards 9 positioned and supported on the horizontal support members 8 and the upper horizontal members 52 of the frame members 5.

[0032] Here, based on Figures 1 to 8, the work procedure from the installation of the horizontal support members 3 to the installation of the support columns 10 on the scaffolding boards 9 and the erection of the handrail members 11 between the support columns 10, 10 will be explained. At least two plates 2 are welded horizontally at a distance from each other to the respective surfaces of opposing flanges 1a, 1a of either of the steel pipe columns 1.

[0033] As shown in Figure 1-(a), an opening 2a is formed in plate 2, and the horizontal support member 3 is inserted through the opening 2a and supported by multiple plates 2, 2 fixed to each flange 1a of the steel pipe column 1. The opening 2a is formed so as not to face any edge of plate 2, or to face any edge. Each plate 2 is welded to the flange 1a with its in-plane direction facing the vertical and each face facing each other.

[0034] As shown in Figure 1, horizontal support members 3 are positioned near the surface of each flange 1a by passing through the openings 2a of multiple plates 2, 2 on each flange 1a, and are supported by the plates 2, 2. The horizontal support members 3, 3 are positioned to sandwich the steel pipe column 1 in the width direction, and are detachably connected and restrained by being held (clamped) together with the plates 2, 2 while being gripped by a gripping device 4 such as a single clamp.

[0035] After the horizontal support member 3 is connected to the plates 2, 2, the frame members 5, 5 described above are erected between the horizontal support members 3, 3, which are arranged in parallel on either side of the steel pipe column 1, as shown in Figure 2, passing between their axial ends. At least one frame member 5 is erected on one side of the steel pipe column 1 in the axial direction of the horizontal support member 3. As shown in Figures 2-(b) and (c), the frame member 5 is placed on the horizontal support members 3, 3 at the lower horizontal member 51 as described above, and is detachably connected to the horizontal support member 3 by being held by a gripping device 6 such as an orthogonal clamp that spans between the lower horizontal member 51 and the horizontal support member 3.

[0036] After, before, or in parallel with, the installation of the frame members 5 on the horizontal support members 3, as shown in Figures 3-(a) and (c), a horizontal connecting member 7 is erected between the axial ends of the lower horizontal members 51 of the two frame members 5, 5, which are positioned flanking the steel pipe column 1, to ensure stability at the axial ends of the two frame members 5, 5, and is connected to the lower horizontal members 51. The horizontal connecting member 7 is connected to the lower horizontal members 51 of the frame members 5 so as not to interfere with the scaffolding boards 9 when the scaffolding boards 9 are installed on the upper horizontal members 52 and horizontal support members 8 of the frame members 5 as described above. The horizontal connecting member 7 is connected to the horizontal support members 3 by being held by a gripping device 6 such as an orthogonal clamp that straddles the lower horizontal members 51.

[0037] After the horizontal connecting member 7 is erected, as shown in Figure 4, horizontal support members 8, 8 are erected on the upper horizontal members 52, 52 of the two frame members 5, 5 positioned on both sides of the steel pipe column 1, between the positions on both sides of the steel pipe column 1, and are connected to the upper horizontal members 52, 52 with gripping devices 4 such as single clamps. "Positions on both sides of the steel pipe column 1" refers to positions closer to the steel pipe column 1 than the axial ends of the upper horizontal member 52, and the horizontal support members 8, 8 are erected in a direction perpendicular to the frame member 5.

[0038] The upper horizontal member 52 and the upper surface of the horizontal support member 8 are located substantially in the same horizontal plane, and the upper horizontal member 52 and the horizontal support member 8 serve to support the scaffolding board 9 that is placed in the area demarcated by them. "Substantially" includes cases where they are located completely in the same horizontal plane, as well as cases where there is a step of a degree that is permissible for the laying of the scaffolding board 9.

[0039] In Figure 4, the gripping device 4 that connects the horizontal support member 8 to the upper horizontal member 52 consists of, for example, a groove-shaped steel member 41 and a rod member 42 such as a bolt or pin that passes through the opposing flanges of the steel member 41. The horizontal support member 8 is connected to the upper horizontal member 52 by the rod member 42 passing through the opposing flanges. The axial end face of the horizontal support member 8 is fixed to the outer circumference of one flange of the steel member 41 by welding or the like.

[0040] In this case, the steel member 41 is manufactured such that, under normal conditions, for example, when both flanges are sandwiching the upper horizontal member 52, at least one of the flanges exerts a restoring force in a direction that brings them closer together. When the steel member 41 is attached to the upper horizontal member 52, the two flanges sandwich the upper horizontal member 52, thereby connecting the horizontal support member 8 to the upper horizontal member 52. The rod member 42 serves to prevent the horizontal support member 8 (steel member) from coming loose from the upper horizontal member 52. In addition, the rod member 42 may also pass through both flanges and screw into at least one of them, bringing the two flanges closer together.

[0041] After the horizontal support members 8 are erected, as shown in Figure 5, longitudinal scaffolding boards 91, 91 are laid and supported in the area demarcated by the upper horizontal members 52 and the horizontal support members 8. These boards have a longitudinal direction that is longer in the axial direction of the horizontal support members 3 and a length that spans between the upper horizontal members 52, 52 of the two frame members 5, 5. Between the longitudinal scaffolding boards 91, 91 at positions on both sides of the steel pipe column 1, transversely oriented short-direction scaffolding boards 92, 92 are laid and supported on both longitudinal sides by the horizontal support members 8, 8, etc.

[0042] In the drawing, the scaffolding board 91 is supported by the upper horizontal members 52, 52 of the frame members 5, 5 on both sides in the longitudinal direction by engaging hooks 93, 93 protruding from both sides in the longitudinal direction with the upper horizontal members 52 from above and downward. Similarly, the scaffolding board 92 is supported by the horizontal support members 8, 8 on both sides in the longitudinal direction by engaging hooks 93, 93 protruding from both sides in the longitudinal direction with the horizontal support members 8, 8 from above and downward. However, the engagement points of the hooks 93 on each scaffolding board 91, 92 may be other.

[0043] After the scaffolding boards 91 and 92 are laid, as shown in Figure 6, support posts 10 are erected on both axial ends of each frame member 5, that is, on the four corner positions of the scaffolding boards 9 when all the scaffolding boards 91 and 92 are laid, for the installation of handrails 11 to prevent workers from falling. The support posts 10 are erected on the connecting members 53 at both axial ends of the frame member 5 and connected to them.

[0044] In order to erect the support columns 10, the upper parts of the connecting members 53 at both ends of the axial direction, which are vertical members of the frame material 5, are connected to the upper horizontal member 52 in such a way that they protrude above the upper surface of the upper horizontal member 52, as shown in Figures 2 to 5(b). The support columns 10, which are positioned at both ends of the axial direction of the frame material 5, are connected either directly or indirectly to the upper parts of these protruding connecting members 53, as shown in Figure 6-(b).

[0045] Figure 6-(b) shows how the support column 10 is indirectly connected to the connecting member 53 by connecting a cylindrical member (sleeve) 54 to the top of the connecting member 53 and connecting the support column 10 to the cylindrical member 54. In this example, for example, male threads are formed on the outer surface of the cylindrical member 54, or female threads are formed on the inner surface. In the former case, the male threads of the cylindrical member 54 are screwed into the female threads on the inner surfaces of the connecting member 53 and the support column 10, respectively. In the latter case, the female threads of the cylindrical member 54 are screwed into the male threads on the outer surfaces of the connecting member 53 and the support column 10, respectively. The connection of the cylindrical member 54 to the connecting member 53 and the support column 10 may not be by screwing.

[0046] After the support columns 10 are connected to the connecting member 53, a handrail 11 is installed and connected between at least the upper parts of adjacent support columns 10, 10, as shown in Figure 7. In Figure 7, for the purpose of improving worker safety, the handrail 11 is installed not only between the upper parts of the support columns 10, 10 but also between the axial middle parts. The handrail 11 is connected to the support columns 10 by a gripping device or a connecting device 12 such as a wedge as shown in the figure.

[0047] In the case of a wedge, the connector 12 is pre-connected to, for example, the axial end of the handrail material 11, and as shown in Figures 7-(b) and (c), the portion of the connector 12 that protrudes from the support column 10 side (wedge) is dropped into a flange (flange) that protrudes from the outer circumference of the support column 10, thereby detachably connecting the handrail material 11 to the support column 10.

[0048] After the handrail material 11 is erected between the support columns 1 and 10, as shown in Figure 8, a toe board 13 is installed on the scaffolding board 9 as needed to prevent construction equipment and materials from falling, and is connected to the scaffolding board 9 or frame material 5, etc. The toe board 13 is basically positioned in two directions, surrounding the scaffolding board 9, along the outer perimeter (edge) of the scaffolding board 91 in the longitudinal direction and the scaffolding board 92 in the short direction.

[0049] Figures 9 and 10 show an example of the present invention in which two frame members 5 are erected on one side of a steel pipe column 1, and scaffolding boards 9 are laid without erecting horizontal support members 8. The work procedure up to the installation of the scaffolding boards 9, other than the erection of the horizontal support members 8, is the same as in the examples in Figures 1 to 8. Figures 9 and 10 show the state in which a baseboard 13 is installed around the scaffolding boards 9.

[0050] Figure 9 shows an example where a scaffolding board 91 is laid on the upper horizontal members 52, 52 of two parallel frame members 5, 5 on one side of a steel pipe column 1, spanning both and parallel to the upper horizontal members 52, and hooks 93 are engaged with both upper horizontal members 52, 52 of a frame member 5 perpendicular to the parallel frame members 5, 5 to provide support. In this example, a scaffolding board 92 perpendicular to the longitudinal scaffolding board 91 is laid on the upper horizontal members 52, 52 of two frame members 5, 5 located on both sides in the longitudinal direction, closer to the steel pipe column 1, and hooks 93 are engaged with both upper horizontal members 52, 52 to provide support.

[0051] Figure 10 shows a steel pipe column 1 with two parallel frame members 5, 5. A connecting member 14 is installed between the axial midpoints of these frame members 5. Two scaffolding boards 91, 91 are laid longitudinally between the connecting member 14 and the upper horizontal members 52, 52 of the frame members 5 parallel to it. Hooks 93 are engaged with the connecting member 14 and the upper horizontal members 52 to provide support. In this case, a scaffolding board 92 is laid transversely between the upper horizontal members 52, 52 of the two frame members 5, 5 closer to the steel pipe column 1, which are parallel to each other. Hooks 93 on both longitudinal sides are engaged with the upper horizontal members 52, 52 to provide support to both upper horizontal members 52, 52.

[0052] In the example shown in Figure 10, a connecting member 14 is installed between the axial intermediate portions of two parallel frame members 5, 5 on one side of the steel pipe column 1, thereby unifying the dimensions of the scaffolding boards 91 in the longitudinal direction and the scaffolding boards 92 in the transverse direction. [Explanation of Symbols]

[0053] 1... Steel pipe, 1a... Flange, 2...plate, 2a...opening, 3... Horizontal support members, 4...Gripper, 41...Steel material, 42...Bar material, 5...frame material, 51...lower horizontal material, 52...upper horizontal material, 53...connecting material, 54a...cylindrical material (sleeve), 6...Gripper, 7……Horizontal connection material, 8... Horizontal support member, 9... Scaffolding planks, 91... Long-side scaffolding planks, 92... Short-side scaffolding planks, 93... Hooks, 10……pillar, 11...Handrail material, 12...Connecting device, 13... Skirting board, 14... Connecting material.

Claims

1. A horizontal support member is connected to a plate having an opening, which is welded horizontally at a distance from each of the opposing flanges of a steel pipe column, by inserting the plate through the opening. A frame member is erected, passing between the axial ends of the two horizontal support members arranged on the surface side of each flange, and having a lower horizontal member and an upper horizontal member that are parallel to each other vertically and a connecting member that connects these two horizontal members, and the lower horizontal member is connected to the horizontal support member, Horizontal support members are installed between the two frame members positioned on either side of the steel pipe column on the upper horizontal members of the two frame members, and are connected to the upper horizontal members. A scaffolding support structure for a steel pipe column, characterized in that a scaffolding board is placed and supported on the horizontal support member and the upper horizontal member of the frame member.

2. The scaffolding support structure for steel pipe columns according to claim 1, characterized in that the horizontal support member is connected to the upper horizontal member in a way that allows for adjustment of the axial connection position of the upper horizontal member.

3. The scaffolding support structure for a steel pipe column according to claim 1, characterized in that a horizontal connecting member is installed between the axial ends of the lower horizontal members of two frame members arranged on either side of the steel pipe column and connected to the lower horizontal members.

4. The scaffolding support structure for steel pipe columns according to any one of claims 1 to 3, characterized in that the upper parts of the connecting members on both axial sides of the frame material protrude upward from the upper surface of the upper horizontal member, and a support column positioned at the corner on the plane of the frame material can be directly or indirectly connected to the upper parts of the protruding connecting members.

Images