JP7583543B2 - Suspended scaffolding installation structure - Google Patents

Description

The present invention relates to a suspended scaffolding installation structure used to install suspended scaffolding on beams at construction sites, etc.

Patent Document 1 describes a suspended scaffolding installation structure in which a suspended scaffolding configured for an H-shaped steel beam, whose suspension locking portion can be freely locked to the upper flange of the H-shaped steel beam, is suspended from the H-shaped steel beam in a state in which the suspension locking portion is locked to the upper flange of the H-shaped steel beam. The above-mentioned suspended scaffolding installation structure can easily suspend the suspended scaffolding from the H-shaped structural beam at the construction site, and furthermore, can suspend the suspended scaffolding at any position in the beam length direction of the H-shaped steel beam, thereby contributing to labor saving and shortening of construction time at the site.

Japanese Patent Publication No. 04-068431 (Figure 3, etc.)

However, because the suspension locking part of the suspended scaffolding is directly locked to the beam, depending on the structure and shape of the building's beams, it may not be possible to lock the suspension locking part to the beam and the suspended scaffolding may not be able to be suspended from the beam. Also, depending on the size of the beam, for example when the beam width of the building is very large, it may not be possible to suspend the suspended scaffolding at the appropriate position in the beam width direction.

The present invention was made in consideration of the above-mentioned problems, and its main objective is to provide a suspended scaffolding installation structure that allows the suspended scaffolding to be appropriately suspended from the beams of a building, enabling efficient work, regardless of the specifications of the beams (structure, shape, size, etc.).

The first characteristic configuration of the present invention is a suspended scaffolding installation structure in which a suspended scaffolding having a suspension engaging portion and a scaffolding plate is suspended from a beam of a building,
A plurality of protruding members attached to an upper surface of the beam and extending in a beam width direction of the beam;
A support member is provided that is installed across the tip portions of the plurality of support members and extends in the beam length direction of the beam,
The support member is configured so that the suspension locking portion of the suspended scaffold can be freely locked at a plurality of positions in the extension direction of the support member,
The hanging scaffolding is suspended from the beam via the extension member and the support member in a state in which the suspension locking portion is locked to the support member,
The end of the support member is extended at a position outer than the outer surface of the column-beam joint portion in the beam width direction, to a position corresponding to the column-beam joint portion outer than the end face of the beam in the beam length direction, and the suspended scaffolding is suspended from that extended portion.

According to this configuration, the suspended scaffolding is indirectly suspended from the beam via the extending member and the supporting member with the suspension locking portion locked to the supporting member, so that the suspended scaffolding can be suspended even from a beam with a specification that the suspension locking portion cannot be directly locked. Moreover, since the supporting member to which the suspension locking portion is locked is extended in the beam width direction by the extending member, the suspended scaffolding can be suspended at an appropriate position in the beam width direction according to the beam specification. And, since the suspension locking portion of the suspended scaffolding can be freely locked to the supporting member at multiple positions in the extension direction, the suspended scaffolding can be suspended at a position suitable for work in the beam length direction at the construction site, and work can be performed efficiently.
Therefore, regardless of the specifications of the building's beams, the suspended scaffolding can be appropriately suspended from the beams and work can be carried out efficiently.
Furthermore, with this configuration, for example, the support member can be extended to a position corresponding to the column-beam joint while avoiding interference between the support member and reinforcing bars or the like that are protruding from the top of the precast concrete column-beam joint for joining to the column of the upper floor. Then, using a hanging scaffolding suspended from the extended portion, joining work for the column-beam joint (for example, filling grout into the joint of the precast concrete column-beam joint) can be efficiently performed from the position corresponding to the column-beam joint.

The second characteristic configuration of the present invention is a suspended scaffolding installation structure in which a suspended scaffolding having a suspension engaging portion and a scaffolding plate is suspended from a beam of a building,
A plurality of protruding members attached to an upper surface of the beam and extending in a beam width direction of the beam;
A support member is provided that is installed across the tip portions of the plurality of support members and extends in the beam length direction of the beam,
The support member is configured so that the suspension locking portion of the suspended scaffold can be freely locked at a plurality of positions in the extension direction of the support member,
The hanging scaffolding is suspended from the beam via the extension member and the support member in a state in which the suspension locking portion is locked to the support member,
A wall component mounting fastener for mounting a lower end portion of a wall component that constitutes a wall of a building is embedded and fixed to the upper surface of the beam,
The projection members are at the points where they attach to the wall component mounting fasteners.

According to this configuration, the suspended scaffolding is indirectly suspended from the beam via the extending member and the supporting member with the suspension locking portion locked to the supporting member, so that the suspended scaffolding can be suspended even from a beam with a specification that the suspension locking portion cannot be directly locked. Moreover, since the supporting member to which the suspension locking portion is locked is extended in the beam width direction by the extending member, the suspended scaffolding can be suspended at an appropriate position in the beam width direction according to the beam specification. And, since the suspension locking portion of the suspended scaffolding can be freely locked to the supporting member at multiple positions in the extension direction, the suspended scaffolding can be suspended at a position suitable for work in the beam length direction at the construction site, and work can be performed efficiently.
Therefore, regardless of the specifications of the building's beams, the suspended scaffolding can be appropriately suspended from the beams and work can be carried out efficiently.
Furthermore, with this configuration, the extension member can be attached to the upper surface of the beam using wall component mounting fasteners for attaching the lower end of the wall component, allowing the suspended scaffolding to be suspended from the beam simply, stably and reliably.
A third characteristic configuration of the present invention is a hanging scaffold for an H-shaped steel beam, in which the hanging engaging portion is configured to be freely engaged with the upper flange of the H-shaped steel beam,
The support member is made of an H-shaped steel,
The tip of the extension member is connected to a portion below the upper flange of the support member made of H-shaped steel.
According to this configuration, while the suspended scaffolding is a suspended scaffolding for H-shaped steel beams, the support member is made of H-shaped steel, and further, the tip of the extension member is connected to a position below the upper flange of the support member made of H-shaped steel, so that the suspension engagement portion of the suspended scaffolding for H-shaped steel beams can be engaged over the entire length of the upper flange of the support member made of H-shaped steel without being obstructed by the extension member.
This allows for more precise adjustment of the position of the suspended scaffolding in the beam length direction at the construction site, making work even more efficient.

Perspective view of a construction site using a suspended scaffolding installation structure Plan of a construction site using a suspended scaffolding installation structure Side cross-sectional view of a construction site using a suspended scaffolding installation structure A schematic diagram showing the construction process using a suspended scaffolding installation structure. Side cross-sectional view of a construction site using a suspended scaffolding installation structure Diagram showing an example of the use of fasteners for mounting wall components

An embodiment of the suspended scaffolding installation structure of the present invention will be described with reference to the drawings.
As shown in Fig. 1, the suspended scaffolding installation structure is a structure in which a suspended scaffolding 2 having a suspension locking part 21 and a scaffolding plate 22 is suspended from a beam 11 of a building 1 at a construction site. The illustrated example shows a case in which the suspended scaffolding 2 is suspended using the suspended scaffolding installation structure at a construction site where an outer perimeter frame of a building 1 consisting of reinforced concrete beams 11, columns 12, and column-beam joint parts 14 is being constructed.

At this construction site, as shown in FIG. 4, two spans of beams 11 and two of the beam-beam joints 14, one end and one middle part 14A, 14B, in the beam length direction Y, are integrally constructed as beam-side precast concrete member P1, which is joined to column-side precast concrete member P2 consisting of column 12 to construct the outer perimeter frame. In this embodiment, the suspended scaffolding 2 is pre-assembled on the exterior side of the building of the beam-side precast concrete member P1 using the suspended scaffolding installation structure, and then the construction work is carried out by lifting it with a crane or the like.

As shown in FIG. 1, the suspended scaffolding 2 is used to perform joining work by having a worker fill a hardening filler such as grout from the outside of the building into joint A between the lower end faces of the column-beam joints 14A, 14B of the beam-side precast concrete member P1 and the upper end face of the column-side precast concrete member P2, and joint B between the side face of the column-beam joint 14A of the beam-side precast concrete member P1 and the end face of the beam 11 of another beam-side precast concrete member P1.

As shown in Figures 1 to 3, this suspended scaffolding installation structure includes multiple steel-framed support members 3 that are attached to the top surface of reinforced concrete beams 11 and extend in the beam width direction X of the beams 11, and a single steel-framed support member 4 that is installed across the tips of the multiple support members 3 and extends in the beam length direction Y of the beams 11. The suspended scaffolding 2 is suspended from the reinforced concrete beams 11 via the support members 3 and 4 with the suspension locking portion 21 locked to the steel-framed support member 4.

As shown in Figures 1 to 3, the suspended scaffolding 2 is equipped with four vertical frames 23 arranged at each corner of a rectangle in plan view, and multiple connecting frames 24 connecting adjacent vertical frames 23 to each other. A scaffolding board 22 is supported by the four lowest connecting frames 24 that form each side of the rectangle in plan view. In addition, the upper ends of the two vertical frames 23 arranged on the beam 11 side are equipped with long bolts 25 that protrude towards the beam 11 side (towards the interior of the building) in the beam width direction X, and a hook-shaped suspension locking portion 21 is screwed into the long bolts 25.

This suspension locking part 21 can be locked to the flange of the H-shaped steel, and by changing the longitudinal position of the long bolt 25 according to the size of the H-shaped steel, it can be locked to H-shaped steel of various sizes. In other words, the suspended scaffolding 2 is configured as a suspended scaffolding for H-shaped steel beams in which the suspension locking part 21 is configured to be freely locked to the upper flange of the H-shaped steel beam. The suspended scaffolding 2 is also configured as a suspended scaffolding unit in which the vertical frame 23, connecting frame 24, scaffolding board 22, and suspension locking part 21 are pre-assembled in a foldable manner.

The supporting member 3 is a steel frame member made of channel steel that is attached to the top surface of the reinforced concrete beam 11 and extends in the beam width direction X of the beam 11, with its base end on the inside of the building attached to the top surface of the reinforced concrete beam 11 and its tip end on the outside of the building attached to the support member 4. The multiple supporting members 3 (four in the illustrated example) are provided at intervals in the beam length direction Y at positions away from the column-beam joint 14.

In this embodiment, the wall component attachment fasteners 16 are embedded and fixed to the top surface of the reinforced concrete beams 11, and the base end of the extension member 3 on the building interior side is attached to the wall component attachment fasteners 16 as temporary attachment members.

As shown in FIG. 6, the fastener 16 for attaching a wall component is used to attach a wall component 15 that constitutes the wall of the building 1 during the exterior material installation process or the like after the construction process, and as shown in FIG. 3, it is composed of, for example, an anchor 16a, an embedded plate 16b that is embedded and fixed in the beam 11 by the anchor 16a, and an attachment bolt 16d that is inserted from below into the embedded plate 16b so that only the bolt shaft of the attachment bolt 16d protrudes upward from the top surface of the beam 11.

As shown in FIG. 6, in the exterior material installation process, the mounting member 17, which is bolted to the curtain wall sash, which is an example of the wall component 15, is fastened with the mounting bolt 16d of the wall component mounting fastener 16 and the nut N, thereby attaching the curtain wall sash to the upper surface of the beam 11. Note that the wall component 15 that constitutes the wall of the building 1 is not limited to the above-mentioned curtain wall sash, but may be a wall body made of precast concrete, or may be any of various components that constitute a wall that closes the area surrounded by the column 12 and the beam 11.

As shown in Figures 2 and 3, the base end of the corrugated member 3 on the building interior side is provided with a pair of mounting plates 31 that protrude from the lower flange 32 of the corrugated member 3 to both sides in the width direction of the corrugated member 3. Each mounting plate 31 has a bolt hole (not shown) formed therethrough, and the corrugated member 3 is attached to the beam 11 by inserting the mounting bolt 16d of the wall component mounting fastener 16 through the bolt hole from below and screwing a nut N onto the mounting bolt from above.

As shown in Figures 1 and 2, the support member 4 is a steel member made of H-shaped steel that is installed across the building exterior end of multiple extension members 3 and extends in the beam length direction Y of the beam 11. As shown in Figure 3, the support member 4 is extended to the outside of the building by the extension members 3 while leaving a gap between the beam 11 and the column-beam joint 14, and is positioned in an appropriate position that is more suitable for joining work on the outside of the building than the outer surface (the side facing the outside of the building) of the beam 11 and the column-beam joint 14.

The support member 4 is configured so that the suspension locking portion 21 of the suspended scaffolding 2 can be freely locked at multiple positions in its extension direction (beam length direction Y). Specifically, as shown in FIG. 3, the height dimension of the support member 4 is configured to be greater than the height dimension of the extension member 3 (about twice as large in this embodiment), and with the bottom ends of the extension member 3 and the support member 4 aligned, the tip of the extension member 3 is joined by welding or the like to a portion below the upper flange 41 of the support member 4.

Therefore, the upper flange 41 of the support member 4 can be positioned higher than the upper end of the extension member 3 over the entire length of the extension direction of the support member 4 (beam length direction Y), and the suspension locking portion 21 of the suspended scaffolding 2 can be locked at the desired position in the extension direction of the support member 4 (beam length direction Y) without being obstructed by the extension member 3.

Furthermore, the end of the support member 4 is extended in the beam width direction X to a position outside the building beyond the outer surface (the outer side of the building) of the column-beam joint portion 14, and in the beam length direction Y to a position corresponding to the column-beam joint portions 14A, 14B that are outside both end surfaces of the beam 11, and the suspended scaffolding 2 is suspended from the extended portions 4A, 4B.

Specifically, as shown in FIG. 2, the length of the support member 4 in the extension direction (beam length direction Y) is set to the length from the position corresponding to the column-beam joint 14A on one end of the beam 11 to the position corresponding to the column-beam joint 14B in the middle on the other end of the beam 11. The part 4A protruding toward the column-beam joint 14A on one end of the support member 4 is protruding in a cantilever state with two supporting members 3 arranged at adjacent parts on one side (right side in the figure) of the column-beam joint 14A, and the suspended scaffolding 2 is suspended. On the other hand, the part 4B protruding toward the column-beam joint 14B in the middle of the support member 4 is protruding with two supporting members 3 arranged separately on both sides (left and right in the figure) of the column-beam joint 14B, and the suspended scaffolding 2 is suspended.

Therefore, workers can use the suspended scaffolding 2 suspended from the protruding portions 4A, 4B of the support member 4 to efficiently perform joining work to joints A, B of the column-beam joints 14A, 14B from positions corresponding to the column-beam joints 14A, 14B.

In addition, with this suspended scaffolding installation structure, as shown in FIG. 5, an external protection unit 5 for waterproofing against scattering to the outside of the building can also be supported at a position between the suspended scaffoldings 2 (not shown) in the extension direction of the support member 4 (beam length direction Y).

The external curing unit 5 is composed of a support section 51 arranged in the gap between the support member 4 and the beam 11, a net mounting frame section 52 extending from the upper end of the support section 51 along the beam width direction X toward the outside of the building, and a curing net 53 hanging down from the tip of the net mounting frame section 52. Then, by engaging the clamp-shaped engagement section 51a of the support section 51 arranged in the gap between the support member 4 and the beam 11 with the upper flange 41 of the support member 4 from the inside of the building, in addition to the suspended scaffolding 2, the external curing unit 5 can also be supported by the beam 11 via the extension member 3 and the support member 4.

As described above, with this suspended scaffolding installation structure, even if the beams 11 of the building 1 are specifications other than H-shaped steel beams to which the suspension engaging portion 21 cannot be directly engaged, the suspended scaffolding 2 can be suspended via the extending member 3 and the support member 4.
Furthermore, since the support member 4 to which the suspension engaging portion 21 is engaged is extended in the beam width direction X by the extension member 3, the suspended scaffolding 2 can be suspended at an appropriate position in the beam width direction X according to the specifications of the beam 11.
Furthermore, since the suspension engagement portion 21 of the suspended scaffolding 2 can be engaged at the desired position in the extension direction of the support member 4 (beam length direction Y), the suspended scaffolding 2 can be suspended in the beam length direction Y at a position suitable for work, allowing work to be performed efficiently.
Furthermore, since the external curing unit 5 can also be supported by the beams 11 in addition to the suspended scaffolding 2, there is no need to provide a separate structure to support the external curing unit 5, and work can be carried out using the suspended scaffolding 2 while preventing the external curing unit 5 from scattering outside the building.

[Another embodiment]
Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, an example was shown in which the suspended scaffolding 2 was suspended from a beam 11 made of reinforced concrete. However, the suspended scaffolding installation structure of the present invention can also be suitably applied to cases in which the suspended scaffolding 2 is suspended from beams of various structures, such as steel-reinforced concrete structures and steel-frame structures.

(2) In the above embodiment, the wall component attachment fasteners 16 present on the upper surface of the beam 11 are used as temporary attachment members to attach the extension member 3 to the upper surface of the beam 11. However, even if such wall component attachment fasteners 16 do not exist, the extension member 3 can be attached to the upper surface of the beam 11 by attaching a dedicated fastener to the upper surface of the beam 11, for example.

Reference Signs List 1 Building 2 Suspended scaffold 3 Support member 4 Support member 11 Beam 12 Column 14 Column-beam joint 15 Wall component 16 Wall component attachment fastener 21 Suspension locking portion 22 Scaffold board X Beam width direction Y Beam length direction

Claims (3)

A suspended scaffolding installation structure in which a suspended scaffolding having a suspension engaging portion and a scaffolding plate is suspended from a beam of a building,
A plurality of protruding members attached to an upper surface of the beam and extending in a beam width direction of the beam;
A support member is provided that is installed across the tip portions of the plurality of support members and extends in the beam length direction of the beam,
The support member is configured so that the suspension locking portion of the suspended scaffold can be freely locked at a plurality of positions in the extension direction of the support member,
The hanging scaffolding is suspended from the beam via the extension member and the support member in a state in which the suspension locking portion is locked to the support member,
A suspended scaffolding installation structure in which an end of the support member is extended to a position corresponding to the column-beam joint portion that is outer than the end face of the beam in the beam length direction, at a position outer than the outer surface of the column-beam joint portion in the beam width direction, and the suspended scaffolding is suspended from the extended portion. A suspended scaffolding installation structure in which a suspended scaffolding having a suspension engaging portion and a scaffolding plate is suspended from a beam of a building,
A plurality of protruding members attached to an upper surface of the beam and extending in a beam width direction of the beam;
A support member is provided that is installed across the tip portions of the plurality of support members and extends in the beam length direction of the beam,
The support member is configured so that the suspension locking portion of the suspended scaffold can be freely locked at a plurality of positions in the extension direction of the support member,
The hanging scaffolding is suspended from the beam via the extension member and the support member in a state in which the suspension locking portion is locked to the support member,
A wall component mounting fastener for mounting a lower end portion of a wall component that constitutes a wall of a building is embedded and fixed to the upper surface of the beam,
A suspended scaffolding installation structure in which the extension member is attached to the wall component mounting fastener. The suspended scaffolding is a suspended scaffolding for an H-shaped steel beam, the suspension engaging portion being configured to be freely engaged with the upper flange of the H-shaped steel beam,
The support member is made of an H-shaped steel,
3. A suspended scaffolding installation structure according to claim 1 or 2 , wherein the tip of the extension member is connected to a portion below the upper flange of the support member made of H-shaped steel.

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