Work floor construction body for temporary construction body in timbering

Abstract

To provide a work floor construction body provided as a work floor for working on a temporary construction body in timbering.SOLUTION: A work floor construction body (S2) is constructed on a temporary construction body (S1) constructed by erecting support pillars (1) at equal intervals by a prescribed unit interval L in an X direction and a Y direction and interconnecting the support pillars adjacent to each other in the X and Y directions by horizontal members. When a scaffold board is installed in the horizontal members arranged at intervals in a scaffold board mounting direction M, the horizontal members arranged at the intervals equivalent to an integer multiple of the unit interval L are formed by standard horizontal members (4Y) provided with frames (4a) extending between the support pillars (1) and (1) at a prescribed height position. The horizontal member disposed between the standard horizontal members (4Y) and (4Y) is formed by a lower horizontal member (8) provided with a body frame (8a) extending between the support pillars (1) and (1) at a lower position, and configured to cross the lower side of the scaffold board (9).SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a working platform structure that serves as a working platform for work on top of a temporary structure in a support structure. [Background technology]

[0002] For example, when pouring concrete to form the framework of a building such as a slab, as shown in Figures 1 to 3, columns 1 are arranged in a row at intervals in the X and Y directions (hereinafter referred to as the "front-to-back direction X" and the "left-to-right direction Y", respectively) that are perpendicular to each other on a plane, and are connected to each other to build a temporary structure S1 up to a height where workers can work. Joists 3 are then placed on top of the columns via support devices 2, and pipe supports (not shown) equipped with expansion and contraction adjustment means are erected on the joists 3 to carry out shoring work, thereby supporting the components that form the framework, such as sheathing and formwork, from below.

[0003] In this case, the temporary structures S1 are erected at equal intervals at a predetermined unit interval L in both the front-to-back direction X and the left-to-right direction Y, and adjacent supports 1, 1 are connected in the front-to-back direction X and the left-to-right direction Y by front-to-back cross members 4X and left-to-right cross members 4Y (hereinafter, when there is no need to distinguish between the two, they will simply be referred to as "cross members 4"), and if necessary, are connected by leading handrails or scaffolding boards with cloth frames as shown in the figure.

[0004] The support 1 has fastening members 5 protruding from its outer periphery and arranged at intervals in the vertical direction, while the cross member 4 has fastening means 6 on both ends of the straight pipe frame 4a. In the illustrated example, the fastening members 6 are made up of flange fittings with multiple (for example, four) wedge holes in the circumferential direction, and the fastening means 6 is made up of a bifurcated member and a wedge piece fixed to the end of the cross member 4, and a wedge fastening method is used in which the flange fitting is clamped between the bifurcated member and the wedge piece is driven in to fasten. However, there are also cases in which a method other than the wedge fastening method is used.

[0005] When carrying out support work, a scaffolding board 7 with a fabric frame is laid at the height of the upper end of the support pillar 1 to install the support device 2 and joists 3, and to perform other tasks such as erecting pipe supports, thereby constructing a work floor structure S2 to provide a work floor.

[0006] The working floor construction S2 is achieved by fastening the fastening means 7 of the cross members 4 to the topmost fastening member 5a of the support 1, thereby connecting adjacent support members 1 in the front-to-back direction X and the left-to-right direction Y with the cross members 4X, 4Y, and the scaffolding boards 7 are mounted on adjacent cross members 4, 4 in the mounting direction M, which is selected from the front-to-back direction X and the left-to-right direction Y. In the illustrated example, the front-to-back direction X is set as the mounting direction M, and the scaffolding boards 7 are erected by engaging the hooks 7a of the fabric frames of the scaffolding boards 7 with the straight pipe frames 4a of the left-to-right cross members 4Y, 4Y adjacent in the direction M, and the working floor is formed by successively laying the scaffolding boards 7.

[0007] The support device 2 that constitutes the shoring is made up of a support bracket with a jack that is inserted into the upper end of the support column 1, and joists 3 are mounted on receiving parts provided on the support bracket. Generally, the pipe supports erected from the joists 3 are arranged on the same axis as the support columns 1 of the temporary structure S1, and are configured to support the load from above coaxially.

[0008] Incidentally, in the case of a scaffolding structure constructed at a normal construction site, rather than a temporary structure S1 for shoring, the spacing between the centers of the columns arranged in a row is generally set to 1800 mm in the front-to-back direction X and 900 mm in the left-to-right direction Y. Therefore, the columns 1 are connected between the centers in the front-to-back direction X by long horizontal members and between the centers in the left-to-right direction by short horizontal members. In other words, when the spacing in the left-to-right direction Y is a predetermined unit spacing L (900 mm), the spacing in the front-to-back direction X is 2L (1800 mm), and the columns are arranged in a row with spacing of 2L x L. For this reason, rectangular scaffolding boards (hereinafter referred to as "standard scaffolding boards") are used, with the longitudinal girder edges longer than the lateral edges in the short side. In other words, the standard scaffolding board has a distance between the centers of the hooks on the gable edges at both ends set to 2L (1800 mm), and is installed by erecting it on a pair of short cross members adjacent to each other in the forward / backward direction X.

[0009] On the other hand, in the temporary structure S1 constituting the shoring, taking into consideration the improvement of load-bearing capacity and the arrangement of pipe supports, it is preferable to arrange the pillars 1 at equal intervals of a predetermined unit interval L (for example, L = 900 mm) in the front-to-back direction X and the left-to-right direction Y (hereinafter referred to as "L x L arrangement") as shown in Figure 2. This improves the load-bearing capacity of the temporary structure S1, and also makes it possible to arrange pipe supports above each pillar coaxially.

[0010] In this case, as shown in Figure 3, the scaffolding board 7 is configured so that the distance between the centers of the hooks 7a, 7a provided at both ends in the mounting direction M matches the unit distance L (900 mm), and the hooks 7a, 7a are mounted by erecting them on the left-right cross members 4Y, 4Y adjacent to each other in the mounting direction M. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Japanese Patent Application Publication No. 2018-188901 [Patent Document 2] Japanese Patent Application Publication No. 2023-170049 Summary of the Invention [Problem to be solved by the invention]

[0012] However, as mentioned above, constructing the temporary support structure S1 in an LxL arrangement of columns 1 based on a predetermined unit interval L is advantageous in terms of load-bearing capacity and pipe support arrangement, but it does not allow the use of the rectangular standard scaffolding boards mentioned above. Therefore, non-standard scaffolding boards 7 corresponding to the interval L as shown in Figure 3 above must be used, but because they do not conform to the standard specifications, they require custom production, which can be difficult to procure. Furthermore, producing and storing non-standard custom materials in large quantities is economically problematic.

[0013] In view of the above, the present invention aims to provide a work floor structure S1 for a temporary support structure in which the spacing between the posts 1 is arranged in an L x L configuration based on a predetermined unit spacing L, and which allows the laying of rectangular standard scaffolding boards that are widely used in scaffolding structures. [Means for solving the problem]

[0014] Therefore, what the present invention configures as a means is that, with regard to a temporary structure in shoring, the temporary structure is constructed by erecting columns at equal intervals at a predetermined unit interval L in the X direction and Y direction which are orthogonal to each other on a plane, fastening means of cross members to fastening members provided on the columns, and connecting columns adjacent in the X direction and Y direction to each other with cross members, and constructing a working platform structure located near the upper ends of the columns, and the working platform structure is constructed by setting a selected direction from the X direction and the Y direction as a scaffolding board mounting direction M, and connecting the cross members arranged at intervals in the scaffolding board mounting direction. In a configuration constructed by erecting scaffolding boards, the cross members arranged at intervals equivalent to an integer multiple of the unit interval L in the scaffolding mounting direction M are composed of standard cross members having frames extending between the supports at a predetermined height, and scaffolding boards are erected on the frames of the standard cross members, and the cross members arranged between the standard cross members on which the scaffolding boards are erected are composed of low cross members having main frames extending between the supports at a position lower than the frames of the standard cross members, and the main frames are configured to cross the underside of the scaffolding boards.

[0015] In a preferred embodiment, the low-level cross member is formed by a pair of fastening means fastened to the highest fastening members of adjacent pillars, a suspension member extending downward from the fastening means, and a main frame suspended on the pair of suspension members, and is configured so that when the fastening means are fastened to the fastening members of the pair of pillars, the main frame is positioned below the fastening members.

[0016] Furthermore, in a configuration in which the fastening member for the support is formed by a flange fitting having a wedge hole, the fastening means for the low-level cross member is composed of a main body fitting having an upper piece portion and a lower piece portion and having a U-shaped cross section that opens toward the direction in which the scaffolding board is mounted, and a wedge member that is inserted through the upper and lower piece portions so as to be freely movable in the vertical direction, and is configured to fasten by driving the wedge member into the wedge hole with the wedge hole of the flange fitting positioned between the upper and lower piece portions, and a mounting portion is provided that protrudes downward from the upper piece portion, and by placing the mounting portion on the top surface of the flange fitting, the flange fitting is positioned approximately in the center in the vertical direction between the upper and lower piece portions. [Effects of the Invention]

[0017] According to the present invention, in a temporary structure S1 constructed by connecting columns 1 arranged in a row with an L x L spacing in the support structure with cross members, left and right standard cross members 4Y, 4Y are arranged at intervals equivalent to an integer multiple of the unit spacing L in the scaffolding board mounting direction M, and a low cross member 8 is arranged between them, which has the effect of allowing the use of standard scaffolding boards 9. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a front view schematically showing the vicinity of the upper part of a temporary structure in relation to a support structure illustrated as a prior art example. [Figure 2] FIG. 1 is a perspective view showing the arrangement of columns and cross members in a temporary structure of the prior art. [Figure 3] FIG. 1 is a perspective view showing a method of constructing a working platform structure by laying scaffolding boards on top of a temporary structure in the prior art. [Figure 4] FIG. 2 is a front view schematically showing the vicinity of the upper part of a temporary structure with respect to a support according to an embodiment of the present invention. [Figure 5] FIG. 1 is a perspective view showing the arrangement of columns, standard cross members, and low cross members at the top of a temporary structure according to an embodiment of the present invention. [Figure 6]This is a perspective view showing adjacent columns connected by a standard cross member and a low-level cross member. [Figure 7] FIG. 10 is a perspective view showing a method of constructing a working platform structure by laying standard scaffolding boards on top of a temporary structure. [Figure 8] This is an oblique view showing the relationship between a standard scaffolding board erected on a standard cross member and a low-level cross member. [Figure 9] FIG. 2 is a perspective view showing the entire low-level cross member. [Figure 10] FIG. 10 is a perspective view showing the state in which the support columns are connected by the low-level cross members. [Figure 11] Regarding an embodiment of a low-level cross member, (A) is an oblique view showing the state in which the fastening means has been separated from the suspension member fixed to the main frame, (B) is an oblique view showing the state in which the fastening means has been fixed to the suspension member fixed to the main frame, and (C) is an oblique view showing the state in which the fastening means has been fastened to the flange fitting of the support. [Figure 12] Regarding the state in which the columns are connected by low-level cross members, (A) is a plan view, (B) is a side view, and (C) is an enlarged view of the A-A cross section. [Figure 13] FIG. 10 is a perspective view showing another embodiment of a low-level cross member. [Figure 14] FIG. 10 is a perspective view showing the state in which the support columns are connected by a low-level cross member according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] Preferred embodiments of the present invention will be described in detail below with reference to the drawings. Note that technical components that are the same as or similar to those in the prior art described with reference to Figures 1 to 3 are designated by the same reference numerals as those shown in Figures 1 to 3.

[0020] In the embodiment shown in Figures 4 to 12, a temporary structure S1 is constructed to a height where workers can work by interconnecting supports 1 that are arranged in a row at intervals in the front-to-back direction X and the left-to-right direction Y, which are perpendicular to each other on a plane. Shoring work is then carried out by placing beams 3 on top of the supports via support devices 2, and erecting pipe supports (not shown) equipped with expansion and contraction adjustment means on the beams 3.

[0021] Below the height position of the upper end of the support 1 in the temporary structure S1 (the position of the work floor structure S2), adjacent support columns 1, 1 are connected by cross members in the front-to-back direction X and the left-to-right direction Y, and if necessary, are further connected by leading handrails or scaffolding boards with cloth frames as shown in the figure.

[0022] In this case, the pillars 1 are arranged at equal intervals of a predetermined unit interval L (for example, L = 900 mm) in the front-to-back direction X and the left-to-right direction Y. In other words, similar to the prior art shown in Figures 1 to 3, by arranging the pillars in a row with an interval of L x L, the load-bearing capacity of the pillars of the temporary structure S1 is improved, and moreover, it is configured so that pipe supports can be arranged above each pillar and coaxially.

[0023] Then, at the top of the temporary structure S1 (at the height of the upper end of the support pillar 1), a work floor structure S2 is constructed to provide a work floor for installing the support device 2 and joists 3, and for performing other work such as erecting pipe supports.

[0024] In this case, in the case of the present invention, a temporary structure S1 having a rigid structure is constructed in which all of the columns 1 arranged in an LxL configuration are connected and supported laterally in the front-to-back direction X and the left-to-right direction Y, and then the working floor structure S2 is constructed by combining and connecting the columns 1 with front-to-back horizontal members 4X and left-to-right horizontal members 4Y and low horizontal members 8, so that rectangular standard scaffolding boards 9 can be laid, rather than the non-standard scaffolding boards 7 used in the prior art described above. In this case, the standard scaffolding boards 9 are those commonly used in temporary scaffolding as described above, and the distance between the centers of the hooks 9a, 9a provided on the gable edges at both ends is set to 2L (1800 mm).

[0025] The longitudinal cross members 4X and the lateral cross members 4Y have fastening means 6 on both ends of the straight pipe frame 4a, similar to those described above in relation to the prior art, and the fastening means 6 are fastened to the flange fittings that constitute the uppermost fastening members 6a of the support 1, and the support 1 is connected with the straight pipe frame 4a extending between the two support columns 1 positioned at approximately the same height as the flange fittings. Such cross members 4 with fastening means 6 on both ends of the straight pipe frame 4a are standard components widely used in temporary scaffolding and the like, and therefore will be referred to hereinafter as "standard cross members 4."

[0026] In contrast, the low-level cross member 8, as described below, connects the pillars to each other by being fastened to the highest fastening member 6a on the pillar 1, but a frame is provided to connect the pillars at a lower position than the straight pipe frame 4a of the standard cross member 4.

[0027] 5 and 6, when the front-to-rear direction X is the scaffolding board mounting direction M, the columns 1 arranged in a row with an interval of L×L are connected to each other by a front-to-rear standard cross member 4X with an interval of L in the scaffolding board mounting direction M. In other words, all the columns 1 adjacent to each other in the scaffolding board mounting direction M are connected by a front-to-rear standard cross member 4X.

[0028] On the other hand, in the left-right direction Y, the columns 1 are arranged in the front-rear direction X at intervals of 2L, which is an integral multiple of the interval L, or twice the interval in the illustrated embodiment, and are connected by the left-right standard cross members 4Y. Therefore, the left-right standard cross members 4Y are arranged so as to skip over one interval L in the scaffolding board mounting direction M.

[0029] The columns 1 that are not connected in the left-right direction Y by the left-right standard horizontal members 4Y are connected by low horizontal members 8.

[0030] 9 and 10, the low cross member 8 comprises a main frame 8a formed from a straight pipe, a pair of fastening means 8b, 8b fastened to the uppermost fastening member 6a of the support pillar 1, and hanging members 8c extending downward from the pair of fastening means 8b, 8b, and both ends of the main frame 8a are fixed to the pair of hanging members 8c, 8c. Therefore, when the fastening means 8b, 8b are fastened to the fastening members 6a, 6a of the pair of support pillars 1, the main frame 8a extending between the support pillars 1, 1 is configured to be positioned lower than the fastening members 6a.

[0031] 7 and 8, the standard scaffolding board 9 is erected by mounting hooks 9a, 9a on left-right standard cross members 4Y, 4Y arranged at the interval L2 in the scaffolding board mounting direction M. At this time, the main frame 8a of the low cross member 8 is arranged across the underside of the standard scaffolding board 9 so as not to interfere with the underside of the standard scaffolding board 9. That is, as shown by the symbol H in FIG. 8, the main frame 8a of the low cross member 8 is arranged at a lower position relative to the height of the straight pipe frame 4a of the standard cross member 4Y that supports the hooks 9a of the standard scaffolding board 9.

[0032] Furthermore, the height of the main frame 8a of the low-level cross member 8 fastened to the support 1 can be set arbitrarily depending on the vertical dimensions of the hanging member 8c, and for example, it may be set so that it is positioned at a height that crosses the underside of the standard scaffolding board 9 erected on the standard cross members 4Y, 4Y at a position sufficiently distant from it, or it may be configured so that it is positioned at a height that crosses it at a close position so that it can support the underside of the standard scaffolding board 9.

[0033] In this way, in the temporary structure S1 constructed by connecting the columns 1 arranged in a row with an L x L spacing with cross members, standard cross members 4Y, 4Y facing left and right are arranged at an interval L2 in the scaffolding board mounting direction M, and a low cross member 8 is placed between them, so that standard scaffolding boards 9 can be used and a work floor structure S2 with the standard scaffolding boards 9 laid out can be constructed.

[0034] In the illustrated embodiment, the temporary structure S1 is constructed with the supports 1 arranged in an L×L configuration with the unit interval L being 900 mm, but in the case of a temporary structure constructed with the supports 1 arranged in an L×L configuration with the unit interval L being 600 mm, for example, the standard cross members 4Y arranged at an interval 3L (1800 mm) equivalent to three times the unit interval L in the scaffolding board mounting direction M may be constructed with the standard cross members 4Y, and the two cross members arranged between adjacent standard cross members 4Y, 4Y may be constructed with low cross members 8, 8. In this case, a standard scaffolding board 9 can be erected on the frames 4a, 4a of the standard cross members 4Y, 4Y adjacent to each other with an interval of 3L, and the two low cross members 8, 8 can be made to cross without interfering with the underside of the standard scaffolding board 9.

[0035] Therefore, when the dimensions of the unit interval L differ in this way, the spacing between the standard cross members 4Y, 4Y on which the standard scaffolding board 9, which has a spacing of 1800 mm between the centers of hooks 9a, 9a, is mounted, can be 3L in addition to 2L, so theoretically it is sufficient if it is an integer multiple of the unit interval L.

[0036] (Example of low-level cross members) 11 and 12 show an embodiment of the low cross member 8. As described above, the low cross member 8 is composed of a main frame 8a made of metal, a pair of fastening means 8b, 8b, and a pair of hanging members 8c, 8c.

[0037] The fastening means 8b is composed of a main metal fitting 10 having an upper piece portion 10a and a lower piece portion 10b and having a U-shaped cross section that opens toward the scaffolding board mounting direction M, and a wedge member 11 that is inserted through the upper and lower piece portions 10a, 10b so as to be movable in the vertical direction. In this case, the main metal fitting 10 is provided with a mounting portion 12 that protrudes downward from the upper piece portion 10a toward the lower piece portion 10b.

[0038] The hanging member 8c is integrally provided with a support portion 13 into which the end of the main frame 8a is inserted and secured by welding or the like, and a bracket portion 14 extending upward from the support portion 13, and the bracket portion 14 is secured by welding or the like while being attached to the side surfaces of the upper and lower pieces 10a, 10b of the main body metal fitting 10.

[0039] When fastening the fastening means 8b to the fastening member 5a of the support 1, the wedge hole of the flange metal fitting constituting the fastening member 5a is positioned between the upper and lower pieces 10a, 10b, and the wedge member 11 is then driven into the wedge hole. At this time, the mounting portion 12 is placed on the flange metal fitting, so the wedge hole can be positioned by sliding it in the placed state. The mounting portion 12 then positions the flange metal fitting approximately in the center in the vertical direction between the upper and lower pieces 10a, 10b, and effectively supports the impact when the wedge member 11 is driven in.

[0040] In the illustrated embodiment, the pair of main body metal fittings 10, 10 at both ends of the main body frame 8a are arranged point symmetrically in a plan view, i.e., so that the openings of the metal fittings 10, which have a U-shaped cross section, face opposite directions. Therefore, when connecting a pair of adjacent posts 1, 1 in the left-right direction Y, one main body metal fitting 10 is oriented to face the fastening members 5a, 5a of the posts 1, 1 from the front and the other main body metal fitting 10 is oriented to face the fastening members 5a, 5a of the posts 1, 1, and then the main body frame 8a is rotated in this state, so that flange metal fittings can be received in both main body metal fittings 10, 10, and therefore the spacing between the posts 1, 1 in the left-right direction Y is narrow, making it possible to easily connect the posts even in an environment with a limited working space.

[0041] However, the present invention is not limited to this configuration, and it goes without saying that the openings of the pair of main body metal fittings 10, 10 may be arranged so as to face the same direction.

[0042] (Another example of a low-level cross member) 13 and 14 show another embodiment of the low cross member 8, in which support arms 15, 15 are provided that extend downward from the main frame 8a in a generally V-shape, and another fastening means 16 is provided at the lower end of the support arms 15. The rest of the configuration is the same as that of the low cross member 8 shown in FIGS.

[0043] In this embodiment, the low-level cross member 8 is used in a state in which the fastening means 8b, 8b at both ends of the main frame 8a are fastened to the top fastening members 5a, 5a of the pillars 1, 1, and in addition, the fastening means 16, 16 of the support arms 15, 15 are fastened to the lower fastening members 5, 5 of the pillars 1, 1.

[0044] Regarding the connecting and supporting structure of a pair of adjacent pillars 1, 1 in the left-right direction Y, the main frame 8a is located below the fastening members 5a, 5a, so there is a drawback in that the support of the pillars 1, 1 is indirectly provided by the hanging members 8b. However, according to this embodiment, there is an advantage that the connection state of the pillars 1, 1 is reinforced between the lower fastening members 5, 5 by a rigid structure consisting of the support arms 15, 15 and the main frame 8a. [Explanation of symbols]

[0045] S1 Temporary Structure S2 Work Platform Structure X Anteroposterior direction Y left / right direction M Scaffolding board loading direction L unit interval 1 post 2 Support device 3. Joists 4 Cross members 4a straight pipe frame 4X Front-to-rear cross member (standard cross member) 4Y Left and right beams (standard beams) 5, 5a Tightening member 6 Fastening means 7. Non-standard scaffolding planks 7a Hook 8 Low horizontal member 8a Main frame 8b Fastening means 8c Lifting member 9 Standard scaffolding planks 9a Hook 10 Main body bracket 10a Upper piece 10b Lower piece 11 Wedge member 12 Placement section 13 Support part 14 Bracket part 15 Support Arm 16 Fastening means

Claims

1. Regarding temporary structures in shoring: The temporary structure (S1) is constructed by erecting support columns (1) at equal intervals of a predetermined unit interval L in the X and Y directions which are orthogonal to each other on a plane, fastening fastening means of cross members to fastening members provided on the support columns, and connecting adjacent support columns in the X and Y directions with the cross members, and constructing a working floor structure (S2) located near the upper ends of the support columns. The working platform structure (S2) is constructed by erecting scaffolding boards on cross members arranged at intervals in the scaffolding board mounting direction M, with the selected direction of the X direction and the Y direction being the scaffolding board mounting direction M, The horizontal members arranged at intervals corresponding to an integral multiple of the unit interval L in the scaffolding mounting direction M are composed of standard horizontal members (4Y) each having a frame (4a) extending between the supports (1) (1) at a predetermined height, and scaffolding boards (9) are erected on the frames (4a) (4a) of the standard horizontal members (4Y) (4Y), The cross members arranged between the standard cross members (4Y) (4Y) on which the scaffolding boards (9) are erected are composed of low cross members (8) having a main frame (8a) extending between the supports (1) (1) at a position lower than the frame (4a) of the standard cross member (4Y), and the main frame (8a) is configured to cross the underside of the scaffolding boards (9).

2. The low-level cross member (8) is formed by a pair of fastening means (8b) fastened to the uppermost fastening members (5a) of adjacent columns, a suspending member (8c) extending downward from the fastening means, and a main frame (8a) suspended on the pair of suspending members, 2. A working floor structure for a temporary structure in support work as described in claim 1, characterized in that, when the fastening means (8b) is fastened to the fastening members (5a) of a pair of supports, the main frame (8a) extending between the supports is configured to be positioned below the fastening members (5a).

3. In a configuration in which the fastening member (5a) of the support (1) is formed by a flange metal fitting provided with a wedge hole, The fastening means (8b) of the low cross member (8) is composed of a main body metal fitting (10) having an upper piece portion (10a) and a lower piece portion (10b) and a U-shaped cross section that opens toward the scaffolding board mounting direction M, and a wedge member (11) that is inserted between the upper and lower piece portions so as to be movable in the vertical direction, and is configured to fasten the upper and lower piece portions (10a) and (10b) by driving the wedge member (11) into the wedge hole with the wedge hole of the flange metal fitting positioned between the upper and lower piece portions. A working floor structure for a temporary structure in shoring as described in claim 2, characterized in that a mounting portion (12) protruding downward from the upper piece portion (10a) is provided, and by placing the mounting portion on the upper surface of the flange fitting, the flange fitting is positioned approximately in the center in the vertical direction between the upper and lower piece portions (10a) (10b).

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