JP4652926B2 - Building frame and framework scaffold - Google Patents

Description

  The present invention relates to a building frame and a frame scaffold used at a construction site or the like.

  In construction sites and the like, a frame scaffold made by assembling a plurality of building frames composed of horizontal rails and vertical columns is used.

  After standing a plurality of building frames at right angles to a structure such as a building at a predetermined interval and attaching and fixing a streak or handrail frame to the building frame to make the building frames self-supporting In addition, a scaffolding board (cloth board) is laid on the horizontal rail of the building frame to form one unit of scaffolding. Next, a newly prepared building frame is placed on a building frame that has already been erected, and a separately prepared streak or handrail frame is attached and fixed between adjacent building frames, and then newly formed. The scaffolding of the upper level is formed by bridging a separately prepared scaffolding plate on a horizontal frame of a self-standing building frame. In order to place another building frame on the building frame, the building column is usually placed by adding the vertical column of another building frame on the vertical column constituting the building frame. By repeating this sequentially, the entire framework scaffolding is formed.

  In the reverse operation, even when the frame scaffolding is sequentially disassembled from above, the uppermost building frame is removed after removing the struts and the handrail frame from the uppermost building frame. In the same manner, for the next lower scaffold, the attached struts and handrail frame are sequentially removed from the building frame for each unit of scaffold.

  As an example of a building frame, an H-shaped building frame (hereinafter simply referred to as an “H frame”) having a horizontal rail in the vicinity of the middle part of a vertical column is known.

  Patent Document 1 shows an example of the H frame. FIG. 7 is a front view showing an example of an H frame according to a conventional example. The H frame 1 is formed with an H-shaped frame from two vertical pillars 2 on the left and right sides and a horizontal rail 3 that connects the two vertical pillars in the vicinity of the center. And the stiffener 4 which connects a vertical column and a crosspiece is provided in the lower part of an H-shaped frame, and an H-shaped shape is maintained by preventing the H-shaped frame from buckling and deforming.

  As will be described later, a plurality of H frames are erected at right angles to the building, and a frame scaffold is formed by attaching and fixing a streak or a handrail frame between adjacent H frames. Locking metal fixtures 6 and 7 for fixing the struts and the handrail frame are attached to the vertical column 2. Further, after the H frame is erected, another H frame is erected thereon to form an upper stage scaffolding. For this reason, a fixing pin (see FIG. (Not shown) is provided with a joint member 5.

  FIG. 8 shows an example in which the frame scaffold is formed by standing the H frame at right angles to the building. (a) is a front view, (b) is a right side view. After laying the laying plate 23 on the ground, the jack base 24 is fixed, and three H frames are erected at equal intervals at right angles to the building 22 on the first base H frame 1-1. Form. By attaching and fixing a half-height staggered handrail frame 13 between adjacent H frames to the lock fitting 6a provided at the lower part of the vertical column on the building side of the H frame 1-1, Make the first stage H frame 1-1 stand by itself. Next, between the adjacent H frames, a handrail frame 10 that is half the height of the H frame is attached and fixed to the lock fitting 6b provided at the lower part of the vertical column opposite to the building of the H frame 1-1. . In addition, between the adjacent H frames, leading the position of the vertical column on the building side, the streak and handrail frame 13 for the upper part of the vertical column on the building side is attached and fixed to the lock fitting 7a, and similarly, Prior to the position of the lower part of the vertical column, the handrail frame 10 for the upper part of the vertical column opposite to the building is attached and fixed to the lock fitting 7b. After that, the first-stage cloth plate 11-1 is gripped between the adjacent horizontal rails of the first-stage H frame 1-1 and bridged through a metal fitting (not shown) to form the first-stage scaffolding. To do.

  Next, three H frames are prepared, and the lower part of the vertical column of the H frame is placed and erected on the joint member 5 at the upper part of the vertical column of the first-stage H frame 1-1. A second stage H frame 1-2 is formed by fixing with a fixing pin (not shown). After that, in the same way as the first stage, the half-height staggered handrail frame 13 of the H frame is attached and fixed to the lock fitting 6a provided at the lower part of the vertical column on the building side of the H frame 1-2. Next, the handrail frame 10 having a height half that of the H frame is attached and fixed to the lock fitting 6b provided at the lower part of the vertical column opposite to the building of the H frame 1-2. In addition, between the adjacent H frames, leading the position of the vertical column on the building side, the streak and handrail frame 13 for the upper part of the vertical column on the building side is attached and fixed to the lock fitting 7a, and similarly, Prior to the position of the lower part of the vertical column, the handrail frame 10 for the upper part of the vertical column opposite to the building is attached and fixed to the lock fitting 7b. Thereafter, the second-stage cloth plate 11-2 is held on the horizontal rail of the second-stage H frame 1-2 and is bridged via a metal fitting (not shown) to form a second-stage scaffold.

  The third stage scaffolding is also formed by the same procedure as the second stage scaffolding. That is, after forming the third-stage H frame 1-3, the strut and handrail frame 13 which is half the height of the H frame is attached to the lock fitting 6a provided at the lower part of the vertical column of the H frame 1-3. Next, the handrail frame 10 which is half the height of the H frame is attached and fixed to the lock fitting 6b provided at the lower part of the vertical column of the H frame 1-3. In addition, between the adjacent H frames, leading the position of the vertical column on the building side, the streak and handrail frame 13 for the upper part of the vertical column on the building side is attached and fixed to the lock fitting 7a, and similarly, Prior to the position of the lower part of the vertical column, the handrail frame 10 for the upper part of the vertical column opposite to the building is attached and fixed to the lock fitting 7b. Thereafter, the third-stage cloth plate 11-3 is bridged over the horizontal rail of the third-stage H frame 1-3 to form a third-stage scaffold.

  In this way, the scaffold is formed by assembling the H frame, but the entire scaffold needs to be fixed to the building side so that the scaffold does not fall in the horizontal direction. For this purpose, a member called “wall connection” is used to fix between the outer wall of the building and the vertical column on the building side of the H frame. Here, the wall tether 14 has a shape that grasps the outer periphery of the cylindrical vertical column in the vicinity of the intersection between the vertical column on the building side and the horizontal beam of the H frame 1-2 whose one end forms a second stage scaffold. It is attached via a fastening fitting 15 having the other end, and the other end is embedded and attached to the outer wall of the building. Although it is not necessary to use the wall tether 14 at every stage of the scaffold, at least one is necessary for every several stages of the scaffold, so that a wall tether can be attached to the vertical column constituting the H frame. There is a need.

Japanese Utility Model Publication 7-48872

  As described above, by installing the lower part of the vertical column of another H frame in sequence on the joint member of the upper part of the vertical column of the H frame and fixing it with a fixing pin, a scaffold consisting of several steps or more than ten steps can be obtained. Since it is formed, a large compressive force is applied in the vertical direction.

  However, the H frame is formed only by the H-shaped frame from the two vertical columns on the left and right and the horizontal beam 3 connecting the two vertical columns in the vicinity of the center, and there is a problem with the strength of the H frame. is there. In particular, since the strength of the vertical column in the part away from the intersection of the vertical column and the horizontal beam is small, the wall link is slightly separated from the intersection of the vertical column and the horizontal beam when the frame scaffolding composed of the H frame is formed. If attached to the part, the vertical column of the H frame to which the wall tether is attached may be bent. FIG. 9 is an example in which a wall link is attached to a part slightly away from the intersection of a vertical column and a horizontal beam in a frame scaffold formed using an H frame according to a conventional example, (a) is a front view, b) is a right side view. Since the vertical column of the H frame is bent at the place where the wall tether 14 is attached, the entire scaffold may collapse.

  The H frame is provided with a stiffener connecting the vertical column and the horizontal beam. This stiffener prevents the H frame from buckling and deforming by maintaining the shape of the H frame. Is for.

  Further, in order to increase the compressive strength of the H frame, (i) a plate-like reinforcing rib plate is attached to the vertical column constituting the H frame, and (ii) a stiffener connecting the vertical column and the horizontal beam is provided with H. It is conceivable that it is also provided on the upper part of the mold frame.

  However, (i) if a plate-like reinforcing rib plate is attached to the vertical column that constitutes the H frame, there arises a problem that it becomes an obstacle when the wall connection is attached to the vertical column. (Ii) Even if a stiffener connecting the vertical column and the horizontal beam is also provided on the upper part of the H-shaped frame, the strength of the H-frame is not so much increased, and the worker's passage is narrowed. Therefore, there arises a problem that it obstructs the traffic.

  The present invention has been made in order to solve this problem, and provides an H frame that can be easily attached to a vertical column and has excellent strength, and the vertical direction of the H frame. It is an object of the present invention to provide a frame scaffold having excellent strength, in which pillars are fixed to adjacent structures by connecting walls.

  As a result of various studies on increasing the strength of the vertical column of the H frame and making it possible to easily attach the wall connection to the vertical column, the present inventors have obtained the following findings (a) to (g). Obtained.

  (a) The shape of the fastening bracket when attaching the wall connection to the vertical column is the same as that used in conventional wall connection, which has a curved portion inside and is fixed after inserting a cylindrical vertical column into the curved portion. Therefore, a shape that can prevent the vertical column from coming off is preferable from the viewpoint of usability.

  (b) Reinforcing material that can reliably reinforce the cylindrical vertical column and that does not interfere with the wall connection, has a shape that can be integrated with the vertical column by welding, etc. It is preferable that the entire outer shape of the vertical column and the reinforcing member is substantially cylindrical. For this purpose, a reinforcing member having an arc-shaped cross section may be installed along the vertical column and integrated by welding or the like. In this case, as long as the thickness of the arc-shaped reinforcing material is not extremely increased, the entire outer surface shape is almost cylindrical even if the thickness of the arc-shaped reinforcing material is included. Can be attached to the vertical column of the H frame. In addition, although a reinforcing material may be installed along the full length of the vertical column of H frame, it is preferable to install in the place where a wall connection is attached, for example, the upper part of the vertical column of H frame.

  (c) When the H frame is moved and stored, the H frames are stacked. Even if the H frames are stacked, it is preferable that they can be stacked in the same manner as in the past. For this purpose, the length of the string of the reinforcing member of the vertical column may be the same as or shorter than the outer diameter of the vertical column.

  (d) It is preferable that the radius of the inner surface of the circular arc in the reinforcing material having an arcuate cross section is equal to or shorter than the radius of the cylindrical outer surface of the vertical column, and at this time, the reinforcing material is attached to the outer surface of the vertical column. Therefore, it becomes easy to integrate the reinforcing material with the vertical column.

  (e) When the radius of the arc inner surface of the reinforcing material having an arcuate cross section is smaller than the radius of the cylindrical outer surface of the vertical column, a gap is formed between the inner surface of the reinforcing material and the outer surface of the vertical column. Since the gap is also plated during the hot dip plating, it is excellent in rust prevention.

  (f) The reinforcing member having an arc-shaped cross section may be provided along either the inside or the outside of the vertical column constituting the H frame. However, in view of the appearance and the like, it is preferable to install the reinforcing material along the inside.

  (g) In order to further reinforce the H frame, a reinforcing rib connecting the reinforcing member having an arcuate cross section and the cross rail can be provided. The reinforcing rib preferably has a U-shaped cross section. Further, it is preferable that the reinforcing ribs are integrally provided by joining the reinforcing member having an arcuate cross section and the cross rail by welding or the like.

  The building frame and the frame scaffold according to the present invention have been completed based on these findings, and the gist thereof is as described in the following (1) to (8).

  (1) A building frame composed of a pair of left and right cylindrical vertical columns, a horizontal beam connecting the vicinity of the center thereof, and a stiffener connecting the vertical column and the horizontal beam, and one or both vertical columns A building frame characterized in that a reinforcing material having an arc-shaped cross section along the column is provided integrally with the vertical column.

  (2) The building frame according to (1) above, wherein a reinforcing member having an arc-shaped cross section is provided so as to be integrated with the vertical column along the vertical column portion above the horizontal beam. (3) The building frame according to (1) or (2) above, wherein a stiffener connecting the vertical column and the horizontal beam is provided in a portion below the horizontal beam.

  (4) The building frame according to any one of (1) to (3) above, wherein the length of the string of the arc-shaped reinforcing material is equal to or less than the outer diameter of the cylindrical vertical column.

  (5) The building frame according to any one of (1) to (4) above, wherein an inner bending radius of the arc-shaped reinforcing material is equal to or smaller than an outer radius of the cylindrical vertical column.

  (6) The building frame according to any one of the above (1) to (5), wherein the reinforcing material having an arc-shaped cross section is provided inside a vertical column constituting the building frame.

  (7) The building frame according to any one of (1) to (6) above, wherein a reinforcing rib that connects the reinforcing member having an arcuate cross section and the cross rail is provided.

  (8) A frame scaffolding comprising the building frame according to any one of (1) to (7) above, wherein a reinforcing member having an arc-shaped cross section is provided so as to be integrated with the vertical column along the vertical column. A frame scaffolding characterized in that, in a part, a vertical column of a building frame can be fixed to an adjacent structure by a wall connection.

  According to the present invention, an H-shaped building frame (hereinafter, simply as described above) having a horizontal beam in the vicinity of the middle part of the vertical column, which makes it possible to easily attach the wall connection to the vertical column and has excellent strength. "H frame") can be provided, and a frame scaffold having excellent strength can be provided in which the vertical column of the H frame is fixed to an adjacent structure by a wall connection.

  Hereinafter, the H frame and the frame scaffold according to the present invention will be described with reference to the drawings.

  1A and 1B show an example of an H frame according to the present invention, in which FIG. 1A is a front view, and FIG. 1B is an enlarged cross-sectional view (top view) taken along line AA in FIG.

  The H frame 1 is formed with an H-shaped frame from two vertical pillars 2 on the left and right sides and a horizontal rail 3 that connects the two vertical pillars in the vicinity of the center. And the stiffener 4 which connects a vertical column and a crosspiece is provided in the lower part of an H-shaped frame, and an H-shaped shape is maintained by preventing the H-shaped frame from buckling and deforming. A joint member 5 having a fixing pin (not shown) is provided at the top of the vertical column 2 of the H frame so that another H frame can be erected thereon. On the upper part of the vertical column 2 of the H frame, a reinforcing member 8 having an arc-shaped cross section is provided along the longitudinal direction of the vertical column and integrated by welding W. And the lock | rock metal fittings 6 and 7 for fixing a handrail frame to the striations are attached to the vertical pillar 2 of H frame. Here, the lock metal fittings for fixing the handrail frame to the streak are four lock metal fittings 6 at the lower part of the H frame, and four lock metal fittings 7 at the upper part of the H frame, respectively. Although attached, the lower two of the four lock fittings 7 attached to the upper part of the H frame are not directly attached to the vertical column, but have a circular cross-section reinforcing material. 8 is attached to the vertical column. However, it is not always necessary to attach the column to the vertical column via the reinforcing member 8, and it may be directly attached to the column. For example, the lock fitting 7 can be directly attached to the vertical column by drilling a hole in the reinforcing member 8 at a position corresponding to the lock fitting 7 directly attached to the vertical column.

  The outer diameter of the vertical column exemplified here is 42.7 mm, the total length of the reinforcing material is 480 mm, the thickness of the reinforcing material is 3.2 mm, the length of the chord of the reinforcing material is 41.2 mm, the inner bending of the reinforcing material The radius was 19 mm, and the maximum outer diameter L of the cross section after integrating the vertical column and the reinforcing material was 48.5 mm.

  In this case, since the length of the string of the reinforcing member of the vertical column is shorter than the outer diameter of the vertical column, the H frame can be stacked in the same manner as in the prior art, so that the H frame can be easily moved and stored. In addition, since the radius of the arc inner surface of the reinforcing material is shorter than the radius of the cylindrical outer surface of the vertical column, the reinforcing material sticks to the outer surface of the vertical column, and the entire outer shape after the reinforcing material is integrated with the vertical column Has a substantially cylindrical shape, and the maximum outer diameter of the cross section is a size that can be grasped by a fastening fitting attached to the wall connection, so that the wall connection can be easily attached to the vertical column.

  FIG. 2 is an example in which a frame scaffold is formed using the H frame shown in FIG. (a) is a front view, (b) is a right side view.

  Except for the fact that the reinforcing material 8 is provided integrally with the vertical column on the vertical column of the H frame, a three-stage scaffold is formed in the same manner as the frame scaffold shown in FIG. Is attached to the intersection of the building-side vertical column and horizontal beam of the H frame 1-2 forming the second stage scaffolding via a fastening bracket 15 having a shape that grasps the outer periphery of the cylindrical vertical column. Yes.

  In the frame scaffold according to the present invention, the reinforcing material 8 is provided integrally with the vertical column on the vertical column of the H frame, so that it has excellent strength and the whole after the integration of the vertical column and the reinforcing material. The outer surface shape is substantially cylindrical, and the maximum outer diameter of the cross section is a size that can be grasped by the fastening fitting 15 attached to the wall connection, so that the wall connection can be easily attached to the vertical column.

  FIG. 3 is another example in which a frame scaffold is formed using the H frame shown in FIG. (a) is a front view, (b) is a right side view.

  Except that the wall tether 14 is attached not to the vicinity of the intersection between the vertical column and the horizontal rail on the building side of the H frame 1-2 that forms the second stage scaffolding, but to a part slightly away from the intersection. Is the same as the framework scaffold shown in FIG.

  In the frame scaffold according to the present invention, the reinforcing material 8 is provided integrally with the vertical column on the vertical column of the H frame, and the wall joint can be easily attached to the vertical column and has excellent strength. Therefore, even if the wall tie is attached to a part that is a little away from the intersection of the vertical column and the horizontal beam, the vertical column of the H frame to which the wall tie is attached will not be bent and the entire scaffold will not collapse. . As described above, according to the present invention, there is an advantage that the degree of freedom of the installation position of the wall connection is increased.

  4A and 4B show another example of the H frame according to the present invention, in which FIG. 4A is a front view, and FIG. 4B is an enlarged cross-sectional view (top view) taken along line AA in FIG.

  The H frame 1 is formed with an H-shaped frame from two vertical pillars 2 on the left and right sides and a horizontal rail 3 that connects the two vertical pillars in the vicinity of the center. And the stiffener 4 which connects a vertical column and a crosspiece is provided in the lower part of an H-shaped frame, and an H-shaped shape is maintained by preventing the H-shaped frame from buckling and deforming. A joint member 5 having a fixing pin (not shown) is provided at the top of the vertical column 2 of the H frame so that another H frame can be erected thereon. On the upper part of the vertical column 2 of the H frame, a reinforcing member 8 having an arc-shaped cross section is provided along the longitudinal direction of the vertical column and integrated by welding W. Further, in order to further reinforce the H frame, a reinforcing rib 9 having a U-shaped cross section is provided at the lower portion of the reinforcing member 8 so as to connect the reinforcing member 8 and the cross rail 3. The reinforcing ribs 9 are integrated with the reinforcing material 8 and the horizontal beam 3 by joining the reinforcing material 8 and the horizontal beam 3 with welding W, respectively. And the lock | rock metal fittings 6 and 7 for fixing a handrail frame to the striations are attached to the vertical pillar 2 of H frame. Here, the lock metal fittings for fixing the handrail frame to the streak are four lock metal fittings 6 at the lower part of the H frame, and four lock metal fittings 7 at the upper part of the H frame, respectively. Although attached, the lower two of the four lock fittings 7 attached to the upper part of the H frame are not directly attached to the vertical column, but have a circular cross-section reinforcing material. 8 is attached to the vertical column. However, it is not always necessary to attach the column to the vertical column via the reinforcing member 8, and it may be directly attached to the column. For example, the lock fitting 7 can be directly attached to the vertical column by drilling a hole in the reinforcing member 8 at a position corresponding to the lock fitting 7 directly attached to the vertical column.

  The outer diameter of the vertical column illustrated here is 42.7 mm, the total length of the reinforcing material is 480 mm, the length of the chord of the reinforcing material is 41.2 mm, the inner bending radius of the reinforcing material is 19 mm, and the vertical column and the reinforcing material The maximum outer diameter L of the cross section after integration is 48.5 mm. The U-shaped reinforcing rib is composed of two flanges that are bent and formed in parallel, and a web connecting both flanges. The overall length is 60 mm, the plate thickness is 3.2 mm, the flange width is 30 mm, and both flanges are The distance between them (external method) is 35.4 mm.

  Also in this case, since the length of the string of the reinforcing member of the vertical column is shorter than the outer diameter of the vertical column, the H frame can be stacked in the same manner as in the prior art, so that the H frame can be easily moved and stored. In addition, since the radius of the arc inner surface of the reinforcing material is shorter than the radius of the cylindrical outer surface of the vertical column, the reinforcing material sticks to the outer surface of the vertical column, and the entire outer shape after the reinforcing material is integrated with the vertical column Has a substantially cylindrical shape, and the maximum outer diameter of the cross section is a size that can be grasped by a fastening fitting attached to the wall connection, so that the wall connection can be easily attached to the vertical column.

  FIG. 5 is an example in which a frame scaffold is formed using the H frame shown in FIG. (a) is a front view, (b) is a right side view.

  In addition to the reinforcing member 8 provided on the vertical column 2 of the H frame, the reinforcing rib 9 having a U-shaped cross section is integrated in a form connecting the reinforcing member 8 and the crosspiece 3. This is the same as the framework scaffold shown in FIG.

  In the frame scaffold according to the present invention, not only the reinforcing material 8 is provided integrally with the vertical column on the vertical column of the H frame, but also the reinforcing rib 9 having a U-shaped cross section includes the reinforcing member 8 and the horizontal beam 3. Since it is integrated in the form of tying, it has even better strength. Similarly to the frame scaffold shown in FIG. 2, the overall outer surface shape after the integration of the vertical column and the reinforcing material is substantially cylindrical, and the maximum outer diameter of the cross section is determined by the fastening bracket 15 attached to the wall joint. Since it is a size to be grasped, the wall tether can be easily attached to the vertical column.

  FIG. 6 is another example in which a frame scaffold is formed using the H frame shown in FIG. (a) is a front view, (b) is a right side view.

  Except that the wall tether 14 is attached not to the vicinity of the intersection between the vertical column and the horizontal rail on the building side of the H frame 1-2 that forms the second stage scaffolding, but to a part slightly away from the intersection. Is the same as the framework scaffold shown in FIG.

  In the frame scaffold according to the present invention, not only the reinforcing material 8 is provided integrally with the vertical column on the vertical column of the H frame, but also the reinforcing rib 9 having a U-shaped cross section connects the reinforcing material 8 and the horizontal beam 3. Since it is integrated in the form of tying, it has even better strength. And it can be easily attached to the vertical column, and even if the wall link is attached to a part slightly away from the intersection of the vertical column and the cross rail, the vertical column of the H frame to which the wall link is attached It will not bend and the entire scaffold will not collapse. Thus, according to the present invention, there is an advantage that the degree of freedom of the installation position of the wall connection is increased.

  According to the present invention, it is possible to provide an H frame that can be easily attached to a vertical column and has excellent strength, and the vertical column of the H frame is attached to an adjacent structure by a wall link. It is possible to provide a frame scaffold having excellent strength that is fixed.

An example of the H-frame which concerns on this invention is shown, (a) is a front view, (b) is the cross-sectional enlarged view (top view) in the AA of (a). It is an example which formed the frame scaffold using the H frame shown in FIG. (a) is a front view, (b) is a right side view. It is another example which formed the frame scaffold using the H frame shown in FIG. (a) is a front view, (b) is a right side view. The other example of the H frame which concerns on this invention is shown, (a) is a front view, (b) is the cross-sectional enlarged view (top view) in the AA of (a). It is an example which formed the frame scaffold using the H frame shown in FIG. (a) is a front view, (b) is a right side view. It is another example which formed the frame scaffold using the H frame shown in FIG. (a) is a front view, (b) is a right side view. It is a front view which shows an example of the H frame which concerns on a prior art example. It is an example which forms a frame scaffold using the H frame which concerns on a prior art example, (a) is a front view, (b) is a right view. It is another example formed using the H frame which concerns on a prior art example, (a) is a front view, (b) is a right view.

Explanation of symbols

1 H frame 1-1 1st stage H frame 1-2 2nd stage H frame 1-3 3rd stage H frame 2 Vertical column 2a Vertical column on the building side 2b Vertical column on the opposite side of the building 3 Horizontal Crosspiece 4 Stiffener 5 Joint member 6 Lock fitting provided at the lower part of the vertical column 6a Lock fitting provided at the lower part of the vertical column on the building side 6b Lock fitting provided on the lower side of the vertical column opposite to the building 7 Lock metal fittings provided at the upper part of the vertical column 7a Lock metal fittings provided at the upper part of the vertical column on the building side 7b Lock metal fittings provided on the upper side of the vertical column opposite to the building 8 Reinforcement material 9 Reinforcement rib 10 Handrail Frame 11 Cloth board 11-1 First-stage cloth board 11-2 Second-stage cloth board 11-3 Third-stage cloth board 13 Streak and handrail frame 14 Wall connection 15 Tightening fitting 21 Ground 22 Building 23 Base plate 24 Jack base L Maximum outer diameter of cross section after integration of vertical column and reinforcement W welding

Claims (8)

  A building frame composed of a pair of left and right cylindrical vertical columns, a horizontal beam that connects the vicinity of the center of the column, and a stiffener that connects the vertical column and the horizontal beam. A building frame characterized in that a reinforcing material having an arc-shaped cross section is provided integrally with a vertical column.   The building frame according to claim 1, wherein a reinforcing member having an arcuate cross section is provided so as to be integrated with the vertical column along the vertical column portion above the horizontal rail.   The building frame according to claim 1 or 2, wherein a stiffener connecting the vertical column and the horizontal beam is provided in a portion below the horizontal beam.   The building frame according to any one of claims 1 to 3, wherein the length of the chord of the reinforcing member having an arcuate cross section is equal to or less than the outer diameter of the cylindrical vertical column.   The building frame according to any one of claims 1 to 4, wherein an inner bending radius of the reinforcing member having an arcuate cross section is equal to or less than an outer radius of the cylindrical vertical column.   The building frame according to any one of claims 1 to 5, wherein a reinforcing member having an arc-shaped cross section is provided inside a vertical column constituting the building frame.   The building frame according to any one of claims 1 to 6, wherein a reinforcing rib is provided to connect the reinforcing member having an arcuate cross section and the cross rail. A frame scaffolding comprising a building frame according to any one of claims 1 to 7, wherein a reinforcing member having an arc-shaped cross section is provided integrally with the vertical column along the vertical column. A frame scaffold, characterized in that a vertical column of a building frame can be fixed to an adjacent structure by connecting the walls.

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