JP7312658B2 - External wall panel drawing aid and external wall panel mounting method - Google Patents

Description

TECHNICAL FIELD The present invention relates to an external wall panel pulling aid and an external wall panel mounting method.

For example, when constructing a steel-framed building in an urban area, it is often the case that there is not enough space for assembling scaffolding between the outer wall of the building to be constructed and the boundary of the adjacent land. Alternatively, even if scaffolding can be erected, there may be no space for the exterior wall panel to enter between the scaffolding and the exterior wall installation position, or there may be no space for installing the exterior wall panel.

Normally, when there is a sufficient space between the scaffolding and the exterior wall installation position, the exterior wall panel lifted by a heavy machine such as a crane is dropped into this space, and the worker on the scaffold takes the exterior wall panel in an oblique posture so that the lower side of the exterior wall panel faces the exterior wall installation position side, and first installs the mounting bolts attached to the lower end of the exterior wall panel into the grooves of the lower mounting brackets attached below the exterior wall installation position of each floor. Then, by raising the upper part of the outer wall panel to the outer wall installation position side by using the engagement part between the mounting bolt and the groove as a fulcrum, and rotating the upper part of the outer wall panel in the out-of-plane direction from the outdoor side to the indoor side, the bolt hole opened at the upper end of the outer wall panel is aligned with the bolt hole of the upper mounting bracket at the outer wall installation position. A through hole is formed by aligning both bolt holes, and the exterior wall panel is attached by inserting a bolt through this through hole and tightening the nut.

In other words, in this construction, the lower end of the outer wall panel is fixed, and the upper part of the outer wall panel is installed while rotating in an out-of-plane movement in an arc from the outdoor side to the indoor side, using this as a fulcrum.

Therefore, as described above, a construction method has been proposed in which the exterior wall panels can be suitably constructed even on a narrow site where there is no space for installing scaffolding. Specifically, guide rails are provided so as to extend in the longitudinal direction of the lower floor ceiling beams and the upper floor ceiling beams that constitute the skeleton of the building. On the other hand, hangers that are hooked on the guide rails are attached to the upper ends of the outer wall panels on the lower floor and the outer wall panels on the upper floor. By hooking each hanger on the guide rail of each ceiling beam, each outer wall panel is suspended from each ceiling beam. By sliding the hanger along the guide rail in this suspended state, each outer wall panel is moved to a predetermined mounting position. In this mounting position, each exterior wall panel is fixed from the indoor side with bolts or the like (see, for example, Patent Document 1).

JP 2008-127927 A

According to the construction method described in Patent Document 1, the exterior wall panel can be constructed even in a narrow site where there is no space for installing scaffolding. However, guide rails are provided to extend in the longitudinal direction of the ceiling beams on the lower floor and the ceiling beams on the upper floor, and hangers that are hooked on the guide rails are attached to the upper ends of the outer wall panels of the lower floor and the outer wall panels of the upper floor, respectively. Furthermore, there is a problem that large-scale installation of temporary members and removal of the temporary members after installation of the outer wall panels require a great deal of labor and time.

In addition, these days when there is a shortage of workers engaged in construction, for example, a situation where construction is performed by a two-man system, one heavy equipment operator who hangs the exterior wall panels and one worker who installs the exterior wall panels on the building frame, can occur frequently. In such a case, even if a worker can set the lower end of the outer wall panel to the installation position after pulling the outer wall panel laterally to the predetermined installation position with a heavy machine, if the upper end of the outer wall panel is slightly inclined in the out-of-plane direction of the building frame, it is necessary to pull the upper end of the outer wall panel toward the building frame, and pulling the upper end of the outer wall panel requires labor.

The present invention has been made in view of the above-mentioned problems, and aims to provide an exterior wall panel drawing aid and an exterior wall panel mounting method using the exterior wall panel drawing aid, which enable the exterior wall panel to be attached while efficiently drawing the exterior wall panel while eliminating the need for large-scale installation and removal of temporary members even in a narrow site where there is no space for installing scaffolding.

In order to achieve the above object, one aspect of the external wall panel drawing aid according to the present invention is as follows:
A first outer wall panel mounting bracket is attached to the beam of the lower floor, and a second outer wall panel mounting bracket is attached to the upper floor beam, and the mounting bolt attached to the frame constituting the outer wall panel is dropped into and engaged with the guide engagement groove provided in the first outer wall panel mounting bracket. , an external wall panel pulling aid,
a pre-installed member composed of a set of two gripping pieces for gripping a portion of the interior side of the lower flange of the upper floor beam and a first base material to which at least one set of the gripping pieces is fixed;
a trailing installation member composed of an engagement piece engaged with the upper end of the outer wall panel, a second base material joined to the first base material, and a connecting rod connecting the engagement piece and the second base material and capable of adjusting the separation between the two,
By drawing the trailing installation member engaged with the engagement piece to the upper end of the outer wall panel with respect to the preceding installation member attached to the lower flange, and joining the second base material to the first base material, the outer wall panel drawing aid is formed, and the upper part of the frame constituting the outer wall panel is brought into contact with the second outer wall panel mounting bracket.

According to this aspect, the preceding installation member fixed to the lower flange of the beam of the upper floor and the succeeding installation member engaged with the upper end of the outer wall panel to draw the outer wall panel to be joined to the preceding installation member are provided, so that the upper part of the outer wall panel whose lower end is attached to the first outer wall panel mounting bracket of the lower floor beam can be drawn while rotating the outer wall panel by the succeeding installation member using this lower mounting point as a fulcrum, and the upper and lower floor beams can be pulled together efficiently and with as little effort as possible. Exterior wall panels can be attached to

For example, while moving (sliding or laterally pulling) an exterior wall panel suspended by a heavy machine in the in-plane direction (the width direction of the exterior wall) along the exterior wall installation line, the mounting bolts attached to the lower corners of the exterior wall panel are dropped into and engaged with the guide engaging grooves of the first exterior wall panel mounting fittings attached to the upper surface of the beam on the lower floor. For example, if the beam on the lower floor is the foundation beam, the beam on the upper floor will be the inter-story beam between the first and second floors, and if the beam on the lower floor is the inter-story beam between the first and second floors, the beam on the upper floor will be the inter-story beam between the second and third floors.

An example of a specific configuration of the first exterior wall panel fitting includes a fixing piece that is joined to the upper flange of a lower floor beam such as a base beam made of H-shaped steel, for example, and an abutting piece that abuts against the frame that constitutes the exterior wall panel perpendicular to the fixing piece. The mounting bolts at the lower corners of the adjacent outer wall panels are dropped into and engaged with the two guide engagement grooves. In the abutting piece of the first outer wall panel mounting bracket, two guiding engagement grooves are formed on the left and right with a space therebetween, so that the mounting bolt at the lower right corner of one of the two adjacent outer wall panels and the mounting bolt at the lower left corner of the other outer wall panel are engaged with the respective guiding engagement grooves. Also, the fixed piece is joined to, for example, the upper surface of the upper flange of the foundation beam with a bolt or the like. A horizontally extending fixed piece placed on, for example, the upper surface of a beam extending in the horizontal direction is erected in a manner orthogonal to a horizontally extending contacting piece that contacts an outer wall panel erected in the vertical direction, and two guide engagement grooves are formed so as to face the upper end of the contacting piece in the standing posture.

On the other hand, in an example of a specific configuration of the second exterior wall panel fitting, in addition to the configuration of the first exterior wall panel fitting, two bolt holes are formed in the abutting piece below the two guide engagement grooves, and the two bolt holes are aligned with the bolt holes at the upper corners of the mutually adjacent exterior wall panels, and the bolts are inserted and bolted. The second outer wall panel mounting bracket is a mounting bracket to which mounting bolts are attached at the lower left and right corners of the four corners of the outer wall panel on the upper floor, and the bolt holes at the upper left and right corners of the four corners of the outer wall panel on the lower floor are aligned with the bolt holes of the second outer wall panel mounting bracket and bolted. For example, the fixing piece of the second exterior wall panel mounting bracket is bolted to the lower surface of the lower flange of the inter-floor beam (or floor beam, which is made of H-beam, for example) between the first and second floors.

In the external wall panel pull-up aid of this aspect, a set of two gripping pieces that constitute the preceding installation member hold the indoor portion of the lower flange of the upper floor beam, for example, by screwing in a butterfly bolt that connects these two gripping pieces, the lower flange can be easily and quickly gripped by the two gripping pieces, and the preceding installation member can be fixed to the indoor portion of the lower flange of the upper floor beam.

Further, the distance between the engaging piece and the second base material that constitute the trailing installation member can be easily adjusted by, for example, rotating the connecting rod screwed to the engaging piece and the second base material with respect to at least one of the engaging piece and the second base material. This separation is adjusted in advance so that the outer wall panel drawn when the succeeding installation member is joined to the preceding installation member is in a vertical posture when engaging with the upper end of the outer wall panel.

A mounting bolt at the lower end of the outer wall panel is engaged with a guide engagement groove provided in the first outer wall panel mounting bracket fixed to the beam of the lower floor, and when a worker pulls the succeeding installation member whose engagement piece is engaged with the upper end of the outer wall panel, the outer wall panel rotates with the lower end as a fulcrum, and the upper part is drawn toward the building frame. Then, when the worker joins the preceding installation member and the subsequent installation member to form the external wall panel pulling aid, the external wall panel is automatically formed in a standing posture. Furthermore, when the standing posture of the exterior wall panel is formed in this way, the bolt holes of the frame constituting the exterior wall panel are automatically aligned with the bolt holes of the exterior wall panel mounting hardware, and the worker can screw the bolts into both bolt holes to fix the exterior wall panel to the building frame.

In another aspect of the external wall panel pulling aid according to the present invention, the preceding installation member includes two sets of the one set of gripping pieces, and the two sets of gripping pieces are attached to the first base material.

According to this aspect, since the pre-installed member has two sets of gripping pieces, the pre-installed member can stably grip the lower flange of the upper floor beam on the indoor side with the two sets of gripping pieces.

In another aspect of the external wall panel pulling aid according to the present invention, bolt holes are formed in corresponding positions of the first base material and the second base material, and the preceding installation member and the following installation member are joined by aligning the bolt holes of both and screwing the bolts.

According to this aspect, the bolt holes are formed in the corresponding positions of the first base material and the second base material, and the bolt holes are aligned and the bolts are screwed, so that the succeeding installation member that has been drawn can be quickly and firmly joined to the preceding installation member.

Further, in another aspect of the external wall panel pulling aid according to the present invention, the trailing installation member is provided with a grip portion.

According to this aspect, since the trailing installation member is provided with the grip portion, it is ensured that the trailing installation member can pull the outer wall panel well.

In addition, one aspect of the method for attaching an exterior wall panel according to the present invention includes:
a pre-installed member attaching step of attaching the pre-installed member constituting the external wall panel pulling aid to a location on the indoor side of the lower flange of the beam of the upper floor;
The outer wall panel is slid along the building frame, the mounting bolt attached to the frame constituting the outer wall panel is dropped and engaged with the guide engagement groove provided in the first outer wall panel mounting bracket attached to the beam of the lower floor, the engaging piece of the trailing installation member constituting the outer wall panel drawing aid is engaged with the upper end of the outer wall panel, the trailing installation member is pulled indoors, and the second base material is joined to the first base material to form the outer wall panel drawing aid, and the second outer wall panel mounting. and an external wall panel pulling attachment step of aligning the bolt holes provided in the frame with the bolt holes provided in the fittings, and inserting bolts through both of the bolt holes to fix the bolts.

According to this aspect, by applying the exterior wall panel pulling aid of this aspect, the exterior wall panel can be attached to the upper floor beam and the lower floor beam while efficiently pulling the exterior wall panel.

As can be understood from the above description, according to the outer wall panel drawing aid and the outer wall panel mounting method of the present invention, even in a narrow site where there is no space for installing scaffolding, it is possible to efficiently draw and mount the outer wall panel while eliminating the need to install and remove large-scale temporary members.

It is the perspective view which looked at an example of the first outer wall panel attachment metal fitting from the back diagonal direction. FIG. 4 is a perspective view showing a state in which an example of the first outer wall panel mounting bracket is attached to the upper flange of the foundation beam; It is the perspective view which looked at an example of the second outer wall panel attachment metal fitting from the front diagonal direction. FIG. 4 is a perspective view showing a state in which an example of a first outer wall panel mounting bracket and an example of a second outer wall panel mounting bracket are respectively attached to an upper flange and a lower flange of an inter-story beam; It is the perspective view which looked at an example of the outer wall panel from the back diagonal direction. 1 is an exploded perspective view of an example of an outer wall panel drawing aid according to an embodiment; FIG. It is a process diagram illustrating an example of an exterior wall panel mounting method according to an embodiment, in which a part of the exterior wall panels on the first and second floors is mounted, and furthermore, the exterior wall panel pulls on the indoor side of the lower flange of the inter-story beam. It is the perspective view which looked at the exterior wall panel pull-up aid attached to the indoor side of the lower flange of an inter-story beam from the room-side upper part. FIG. 8 is a process diagram illustrating an example of the method for attaching the exterior wall panel following FIG. 7 , and is a front view showing a state in which the exterior wall panel is pulled laterally. FIG. 10 is a process diagram illustrating an example of the exterior wall panel mounting method following FIG. 9 , and is a vertical cross-sectional view showing a state in which the lower end of the exterior wall panel is engaged with the first exterior wall panel mounting bracket attached to the foundation beam, and the upper end of the exterior wall panel is tilted to the outside, and a part of the succeeding installation member constituting the exterior wall panel drawing aid is engaged and drawn to the upper end of the exterior wall panel. FIG. 11 is a process diagram illustrating an example of the exterior wall panel mounting method following FIG. 10 , in which the trailing installation member is completely pulled together, the preceding installation member and the trailing installation member are bolted, and the second exterior wall panel mounting bracket attached to the inter-floor beam is bolted to the exterior wall panel. FIG. 11 is a process diagram illustrating an example of the method for attaching the outer wall panel following FIG. 10 , and is a front view showing a state in which the outer wall panel is attached and the outer wall panel drawing aid is removed.

Hereinafter, an example of an external wall panel drawing aid and an example of an external wall panel mounting method according to the embodiment will be described with reference to the accompanying drawings. In addition, in the present specification and drawings, substantially the same components may be denoted by the same reference numerals, thereby omitting duplicate descriptions.

[First outer wall panel mounting bracket]
First, with reference to FIGS. 1 and 2, an example of the first outer wall panel mounting bracket used in the outer wall panel mounting method according to the embodiment, and a configuration in which the first outer wall panel mounting bracket is attached to the foundation beam will be described. Here, FIG. 1 is a perspective view of an example of the first outer wall panel mounting bracket as seen obliquely from the back, and FIG. 2 is a perspective view showing the state in which the example of the first outer wall panel mounting bracket is attached to the upper flange of the base beam.

As shown in FIG. 1, the first exterior wall panel mounting bracket 10 has a fixed piece 11 that is joined to the beams (see FIG. 2) including the base beam 30, an abutment piece 12 that is orthogonal to the fixed piece 11 and abuts against the exterior wall panel frame 54 (see FIG. 5), and two opposing flanges 13, which are integrally formed. In the contact piece 12 shown in FIG. 1, the back surface opposite to the surface contacting the outer wall panel frame 54 is shown.

The abutment piece 12 is provided with two guide engagement grooves 16 provided with two tapered guide portions 14 gradually approaching downward and an arc-shaped or semi-track-shaped engagement portion 15 connecting the lower ends of the two guide portions 14, left and right with an interval therebetween.

Further, the fixed piece 11 is provided with a plurality of fixed piece bolt holes 17 which are positioned in bolt holes opened in the beam 30 or the like and through which bolts are inserted.

The first outer wall panel mounting bracket 10 is integrally molded, for example, by casting or forging, and the guide engagement groove 16 and the fixing piece bolt hole 17 may be formed at the same time as the first outer wall panel mounting bracket 10 is molded, or may be formed by cutting as a post-processing.

As shown in FIG. 2 , a plurality of sets of two bolt holes (not shown) are formed as a set at predetermined positions of the upper flange 31 of the beam 30 made of H-shaped steel. As shown in FIG. 2 , in a state where the first outer wall panel mounting bracket 10 is fixed to the upper surface of the upper flange 31 of the beam 30 , the contact piece 12 extends in the vertical direction orthogonal to the upper flange 31 . Here, the beam 30 shown in the figure is a foundation beam, but the first exterior wall panel mounting bracket 10 is also joined to an upper floor inter-floor beam between the first and second floors, between the second and third floors, etc. in the same manner as in the illustrated example.

As shown in FIG. 2, an exterior wall panel (not shown) suspended by a heavy machine (not shown) is slid in the X1 direction, which is the width direction (in-plane direction) of the exterior wall, along the upper and lower beams (for example, the base beam below and the upper inter-floor beam between the first and second floors). be guided to The mounting bolt guided in the X2 direction by the guide part 14 is further dropped into the engaging part 15 in the X3 direction, whereby the lower corner part of the outer wall panel is fixed to the lower foundation beam 30 via the first outer wall panel mounting bracket 10. - 特許庁

[Second wall panel mounting hardware]
Next, with reference to FIG. 3, an example of the second exterior wall panel mounting bracket used in the exterior wall panel mounting method according to the embodiment will be described, and with reference to FIG. Here, FIG. 3 is a perspective view of an example of the second exterior wall panel mounting bracket as seen obliquely from the front, and FIG. 4 is a perspective view showing an example of the first exterior wall panel mounting bracket and an example of the second exterior wall panel mounting bracket, respectively, attached to the upper flange and the lower flange of the interstory beam.

As shown in FIG. 3, the second outer wall panel mounting bracket 20 is formed by bending a steel plate into a stepped shape, and has a fixing piece 21 at the top and extending in the horizontal direction, a contact piece 22B at the bottom and extending in the vertical direction, and a contact piece 22A in the middle and bent into a substantially U-shape. Then, the abutting piece 22A is welded at a stepped middle position to integrate the fixed piece 21 and the abutting pieces 22A and 22B, and a pair of flanges 23 are welded to the sides of these pieces to form the second outer wall panel mounting bracket 20.

In the upper contact piece 22A, two guide engaging grooves 26 are opened on the left and right with a space therebetween, which are provided with two tapered guide parts 24 gradually approaching downward and an arc-shaped or semi-track-shaped engaging part 25 connecting the lower ends of the two guide parts 24.例文帳に追加On the other hand, bolt holes 28 are formed directly below the two guide engagement grooves 26 of the lower contact piece 22B.

As shown in FIG. 4, two first exterior wall panel mounting brackets 10 are joined to predetermined positions of the upper flanges 41 of the inter-story beams 40 made of H-shaped steel, as already described with reference to FIG. On the other hand, a plurality of sets of two bolt holes (not shown) are formed as a set at a predetermined position (position corresponding to the first outer wall panel mounting bracket 10) of the lower flange 42 of the inter-story beam 40. The fixing piece 21 is brought into contact with the lower flange 42, a set of fixing piece bolt holes 27 are positioned with respect to the set of bolt holes, and bolts are inserted and joined by bolt nuts 60. Here, the beams 40 to which the second exterior wall panel mounting brackets 20 are fixed include upper floor inter-story beams between the first and second floors and between the second and third floors.

As shown in FIG. 2, when the outer wall panel (not shown) suspended by a heavy machine (not shown) is slid along the upper and lower beams in the X1 direction, and the mounting bolt at the lower corner of the outer wall panel is engaged with one of the guide engagement grooves 16 of the first outer wall panel mounting bracket 10, the bolt 58 (see FIG. 5) of the outer wall panel is positioned in one of the bolt holes 28 of the contact piece 22B of the second outer wall panel mounting bracket 20 shown in FIG. are aligned. Then, by screwing a fixing bolt 59 (see FIG. 5) from the rear side of the second outer wall panel mounting bracket 20 into the communication hole formed by the bolt holes 28 and the bolt holes 58 that are aligned with each other, the upper corner of the outer wall panel is fixed to the interstory beam 40 via the second outer wall panel mounting bracket 20.

If the inter-story beam 40 shown in FIG. 4 is the inter-story beam 40 between the first floor and the second floor, the lower corner of the outer wall panel of the second floor is engaged with the guide engagement groove 16 of the first outer wall panel mounting bracket 10 fixed to the upper flange 41 of the inter-story beam 40, and the lower mounting bolt 57 is engaged with the guide engagement groove 26 of the second outer wall panel mounting bracket 20 fixed to the lower flange 42 of the inter-story beam 40. It will be.

[Outer wall panel]
Next, with reference to FIG. 5, an example of an exterior wall panel used in the exterior wall panel mounting method according to the embodiment will be described. Here, FIG. 5 is a perspective view of an example of the outer wall panel as seen from the rear side.

The outer wall panel 50 has a grid-shaped outer wall panel frame 54 (an example of a frame) and an outer wall surface member 55 fixed to the outer wall panel frame 54 via a vertical base member 54a.

The outer wall panel frame 54 has a pair of left and right vertical beams 51, a pair of upper and lower horizontal beams 52, and an intermediate vertical beam 53 disposed between the pair of vertical beams 51, and each member is formed by welding, nailing, screwing, etc. to each other.

The outer wall material 55 is formed of a siding material, and has a plurality of vertical patterned joints 55a and horizontal patterned joints 55b on its surface. Examples of the siding material include ceramic siding, metal siding made of aluminum or steel plate, woody siding made by processing natural wood, and resinous siding made of vinyl chloride resin or the like.

A bolt hole 58 is formed in the vicinity of the upper end of the vertical beam 51, and as described above, the bolt hole 28 (see FIG. 3 or 4) of the second outer wall panel mounting bracket 20 is positioned with respect to the bolt hole 58 to form a communication hole, and then a fixing bolt 59 is screwed into the communication hole.

On the other hand, two mounting bolts 56 and 57 (an upper mounting bolt and a lower mounting bolt) are mounted vertically near the lower end of the vertical beam 51 . As shown in the figure, the mounting bolts 56 and 57 are arranged between a pair of circular flanges. The bolt passes through one of the circular flanges and the tip of the bolt is screwed into the vertical beam 51. The bolts between the pair of circular flanges are engaged with the guide engagement grooves 16, 26 of the first outer wall panel mounting bracket 10 and the second outer wall panel mounting bracket 20, and at that time, the pair of circular flanges sandwich the contact pieces 12, 22A, so that the outer wall panel is fixed to the first outer wall panel mounting bracket 10 or the like without rattling.

In addition, each of the exterior wall panels 50 shown in FIG. 5 is an exterior wall panel attached to the upper floor of the second floor or higher, as will be described in detail below. On the other hand, the exterior wall panel 50A (see FIG. 9) used on the first floor is the exterior wall panel 50 shown in FIG.

[Outer wall panel pulling aid according to the embodiment]
Next, with reference to FIG. 6, an example of the external wall panel pulling aid according to the embodiment will be described. Here, FIG. 6 is an exploded perspective view of an example of the external wall panel drawing aid according to the embodiment.

As shown in FIG. 6, the external wall panel pulling aid 90 has a preceding installation member 70 that is first attached to the building frame, and a following installation member 80 that is joined to the preceding installation member 70 while pulling the upper end of the external wall panel.

The preceding installation member 70 has a gripping piece 74 and a first base member 77. The gripping piece 74 is composed of a first gripping piece 71 and a second gripping piece 72, and a wing nut 73 connecting them.

Here, the first gripping piece 71 is formed by bending an elongated rectangular steel plate in a plan view into a substantially Z shape (the rising piece of the Z shape is vertical). Furthermore, reinforcing ribs 71a are formed on the left and right sides by bending outward both ends along the longitudinal direction of the substantially Z-shape. Then, the upper piece of the first gripping piece 71 is fixed to the base piece 75 with a bolt nut or the like.

On the other hand, the second gripping piece 72 is formed by bending an elongated rectangular steel plate in plan view into an L shape, and both ends along the longitudinal direction thereof are bent outward to form reinforcing ribs 72a on the left and right.

A vertically extending elongated hole 71b is formed in the rising piece of the first gripping piece 71, and an engagement projection 72b made up of a circular flange and a bolt is attached to the rear side of the rising piece of the second gripping piece 72. By inserting the bolt through the elongated hole 71b and engaging the circular flange with the elongated hole 71b, the second gripping piece 72 is vertically slidably joined to the rising piece of the first gripping piece 71. By sliding the second gripping piece 72 with respect to the first gripping piece 71, a part of the lower flange of the beam arranged therebetween can be gripped.

A bolt hole 71c is opened in the lower piece of the first gripping piece 71, a bolt hole 72c is opened in a position corresponding to the bolt hole 71c in the lower piece of the second gripping piece 72, and a wing nut 73 is screwed from below into both of the bolt holes 71c, 72c.

On the other hand, the base piece 75 has an inverted Ω shape when viewed from the front, and is formed by bending an elongated steel plate. More specifically, it has a horizontal central piece 75a, rising pieces 75b rising upward from the left and right ends of the central piece 75a, and overhanging pieces 75c extending horizontally outward from the upper ends of the rising pieces 75b.

A bolt hole 76a is formed in a joined piece 76 that hangs down from a center piece 75a of the base piece 75 .

At the site, the worker can hold a part of the lower flange of the beam between the first gripping piece 71 and the second gripping piece 72 that constitute the two sets of gripping pieces 74, and then tighten both wing nuts 73 from below, thereby stably and firmly attaching the preceding installation member 70 to the lower flange of the beam.

On the other hand, the trailing installation member 80 has an engaging piece 85 engaged with the upper end of the outer wall panel, a second base material 83 joined to the first base material 77, and a connecting rod 86 that connects the engaging piece 85 and the second base material 83 and adjusts the separation between them.

The second base material 83 has a base piece 81 and a joint piece 82 . The base piece 81 is formed by bending a steel plate into an L shape, and has a horizontal piece 81a and a hanging piece 81b hanging from one end of the horizontal piece 81a. A rectangular frame-shaped grasping portion 84 to be grasped by an operator is attached to the outer surface of the hanging piece 81b by welding, bolting, or the like.

The joining piece 82 is formed by bending an elongated rectangular steel plate in a plan view into a substantially Z shape (the standing piece of the Z shape is vertical), and has a horizontal piece 82a extending in the horizontal direction, a rising piece 82b rising upward from one end of the horizontal piece 82a, and a hanging piece 82c hanging from the other end of the horizontal piece 82a. The horizontal piece 82a is placed on the horizontal piece 81a of the base piece 81, and both are attached by welding, bolting, or the like.

A bolt hole 82e is formed in the rising piece 82b of the joint piece 82, and when the preceding installation member 70 and the succeeding installation member 80 are joined, the rising piece 82b is brought into contact with the joined piece 76, and a headed bolt 91 is screwed into both mutually positioned bolt holes 76a and 82e.

The engagement piece 85 is also formed by bending an elongated rectangular steel plate in a plan view into a substantially Z shape (the standing piece of the Z shape is vertical), and has a horizontal piece 85a that extends horizontally, a rising piece 85b that rises upward from one end of the horizontal piece 85a, and a hanging piece 85c that hangs down from the other end of the horizontal piece 85a.

The connecting rod 86 is formed of a fully threaded bolt, and one end of the connecting rod 86 is screwed into a bolt hole (not shown) formed in the hanging piece 82c of the joint piece 82, and the other end of the connecting rod 86 is screwed into a bolt hole (not shown) formed in the rising piece 85b of the engaging piece 85, thereby forming the trailing installation member 80.

When the trailing installation member 80 is used to draw the upper end of the outer wall panel at the site, the connecting rod 86 is rotated to slide the second base member 83 or the engaging piece 85, thereby adjusting the distance t1 between the hanging piece 81b and the rising piece 85b as desired. Specifically, the distance t1 is set so that the outer wall panel forms a vertical posture when the outer wall panel is drawn and the preceding installation member 70 and the subsequent installation member 80 are joined together to form the outer wall panel drawing aid 90.例文帳に追加

[Method for Attaching Exterior Wall Panel According to Embodiment]
Next, with reference to FIGS. 7 to 12, an example of a method for attaching the exterior wall panel according to the embodiment will be described. Here, FIGS. 7 and 9 to 12 are diagrams sequentially showing process diagrams of an example of the method for attaching the exterior wall panel according to the embodiment. More specifically, FIG. 7 is a front view showing a state in which a part of the outer wall panels on the first and second floors are attached, and further, a preceding installation member that constitutes an auxiliary tool for drawing the outer wall panels is attached to the indoor side of the lower flange of the inter-story beam. FIG. 9 is a front view showing a state in which the outer wall panel is being pulled laterally, and FIG. 10 is a longitudinal sectional view showing a state in which the lower end of the outer wall panel is engaged with the first outer wall panel mounting bracket attached to the foundation beam, and the upper end of the outer wall panel is tilted to the outside. FIG. 11 is a vertical cross-sectional view showing a state in which the trailing installation member is completely drawn, the leading installation member and the trailing installation member are bolted, and the second exterior wall panel mounting bracket attached to the inter-floor beam is bolted to the exterior wall panel. Furthermore, FIG. 12 is a front view showing a state in which the outer wall panel is attached and the outer wall panel drawing aid is removed.

First, as shown in FIG. 7, a foundation beam 30 is fixed on a foundation 35 made of reinforced concrete, and a plurality of first exterior wall panel mounting brackets 10 are fixed at predetermined positions on the upper flange 31 of the foundation beam 30 with a gap corresponding to the width of the exterior wall panel. FIG. 7 shows a state in which the outer wall panel 50A on the first floor and the outer wall panel 50 on the second floor are already halfway attached via the first outer wall panel mounting bracket 10 and the second outer wall panel mounting bracket 20 . The outer wall panel 50A on the first floor is an outer wall panel obtained by removing the upper mounting bolts 56 from the outer wall panel 50 on the second floor described with reference to FIG.

The outer wall panel 50A of the first floor is fixed by engaging the mounting bolt 57 with the guide engagement groove 16 of the first outer wall panel mounting bracket 10 fixed to the foundation beam 30, and by positioning the bolt hole 58 in the bolt hole 28 of the second outer wall panel mounting bracket 20 fixed to the inter-floor beam 40 to form a communication hole, and by screwing the fixing bolt 59 into the communication hole.

On the other hand, at the lower corner of the outer wall panel of the second floor, the upper mounting bolt 56 is engaged with the guide engagement groove 16 of the first outer wall panel mounting bracket 10 fixed to the upper flange 41 of the inter-story beam 40. Furthermore, the lower mounting bolt 57 is engaged with the guide engagement groove 26 of the second outer wall panel mounting bracket 20 fixed to the lower flange 42 of the inter-story beam 40 .

In FIG. 7, the illustration of the upper end of the outer wall panel 50 on the second floor is omitted, but above the illustrated inter-floor beam 40, there is, for example, another inter-floor beam, and the lower flange of this inter-floor beam is attached with the second outer wall panel mounting bracket 20 in the same manner as the illustrated inter-story beam 40. is fixed by

In this manner, the lower corners of the outer wall panel 50 on the second floor are engaged at two points via the first outer wall panel mounting bracket 10 and the second outer wall panel mounting bracket 20 located above and below the inter-floor beam 40, thereby preventing the lower part of the outer wall panel 50 from tilting (eccentrically) in the out-of-plane direction (the direction perpendicular to the plane of FIG. 7), and the lower part of the outer wall panel 50 can be firmly fixed to the beam 40.

Next, in attaching the separate outer wall panel 50A to the side of the first floor outer wall panel 50A shown in FIG. 7, the preceding installation member 70 constituting the outer wall panel drawing aid 90 shown in FIG. In FIG. 7 , the preceding installation member 70 is attached to a substantially central position of the left and right second outer wall panel mounting brackets 20 attached to the inter-floor beam 40 .

As shown in FIG. 8, after a part of the lower flange 42 of the inter-story beam 40 is gripped between the first gripping piece 71 and the second gripping piece 72 that constitute the two sets of gripping pieces 74, both wing nuts 73 are tightened from below, so that the pre-installed member 70 can be stably and firmly attached to the lower flange 42 of the inter-floor beam 40 (above, pre-installed member attaching step).

Next, as shown in FIG. 9, the outer wall panel 50A suspended by a heavy machine (not shown) is pulled laterally in the X1 direction, which is the width direction (in-plane direction) of the outer wall, along the upper and lower base beams 30 and the inter-floor beams 40, so that the mounting bolts 57 at the lower corners among the four corners of the outer wall panel 50A, which is rectangular in front view, are engaged with the respective guiding engagement grooves 16 of the two first outer wall panel mounting brackets 10 on the left and right. .

In this way, although the mounting bolts 57 at the lower corners of the outer wall panel 50A are engaged with the two left and right first outer wall panel mounting brackets 10, the upper end of the outer wall panel 50A is often slightly inclined in the out-of-plane direction of the building frame, for example, as shown in FIG. FIG. 10 shows a state in which the outer wall panel 50A is tilted forward with respect to the vertical line L by an angle θ.

When the upper end of the outer wall panel 50A is drawn toward the interior of the building, the connecting rod 86 constituting the outer wall panel drawing aid 90 is rotated to slide the second base member 83 or the engaging piece 85 (see FIG. 6), thereby adjusting the distance t1 between the hanging piece 81b and the rising piece 85b as desired. Specifically, the distance t1 is set so that the outer wall panel 50A forms a vertical posture when the outer wall panel 50A is drawn and the preceding installation member 70 and the following installation member 80 are joined together to form the outer wall panel pulling aid 90. - 特許庁

Then, as shown in FIG. 10, a worker (not shown) grips the gripping portion 84 of the trailing installation member 80 to engage the engaging piece 85 with the upper end of the outer wall panel 50A, pulling the upper end of the outer wall panel 50A toward the interior of the room in the Y1 direction. At this time, since the lower end of the outer wall panel 50A is engaged with the first outer wall panel mounting bracket 10 attached to the foundation beam 30, the upper end of the outer wall panel 50A is rotated while being pulled toward the room side with this engaging portion as the pivot point.

Then, as shown in FIG. 11 , the rising piece 82 b of the succeeding installation member 80 is brought into contact with the joined piece 76 of the preceding installation member 70 . In this state in which the joined piece 76 and the rising piece 82b are in contact with each other, the bolt holes 76a and 82e formed in both are aligned to form a communicating hole. Then, by screwing the headed bolt 91 into the communication hole in the Y2 direction, the leading installation member 70 and the trailing installation member 80 are joined to form the external wall panel drawing aid 90 .

Further, when the outer wall panel 50A is drawn to form a vertical posture, the bolt hole 58 in the upper corner of the outer wall panel 50A is positioned in the bolt hole 28 of the second outer wall panel mounting bracket 20 attached to the lower flange 42 of the inter-story beam 40, and the bolt holes 58, 28 form a communicating hole. By screwing a fixing bolt 59 into this communication hole in the Y3 direction, the upper end of the outer wall panel 50A is fixed to the inter-floor beam 40 via the second outer wall panel mounting bracket 20 (the above is the outer wall panel pulling mounting step).

After the exterior wall panel 50A is fixed to the inter-floor beam 40, as shown in FIG. 12, the exterior wall panel drawing aid 90 is removed, the exterior wall panel drawing aid 90 is reattached to the position corresponding to the exterior wall panel 50A to be installed next, and the exterior wall panel 50A is mounted in the same manner.

In this way, according to the method of installing the outer wall panel using the first outer wall panel mounting bracket 10 and the second outer wall panel mounting bracket 20, the outer wall panels 50, 50A can be installed while sliding from the width direction of the outer wall with respect to the upper and lower beams 30, 40. Therefore, the exterior wall panels can be efficiently installed even in a narrow site where there is no space for installing scaffolding.

In addition, as is clear from each figure, the first outer wall panel mounting bracket 10 and the second outer wall panel mounting bracket 20 have a relatively simple structure and are not large in size, so that the manufacturing cost is low. In addition, since the first outer wall panel mounting bracket 10 and the second outer wall panel mounting bracket 20 are permanent members as well as temporary members, they do not need to be removed after the outer wall panel is installed.

Furthermore, by applying the external wall panel pulling aid 90, the external wall panel 50A (50) can be attached to the beams 30, 40 of the upper floor and the lower floor while pulling the external wall panel 50A (50) efficiently and with as little labor as possible.

It should be noted that other embodiments may be possible in which other components are combined with the configurations described in the above embodiments, and the present invention is not limited to the configurations shown here. Regarding this point, it is possible to change without departing from the gist of the present invention, and it can be determined appropriately according to the application form.

10: First outer wall panel mounting bracket 11: Fixed piece 12: Contact piece 13: Flange 14: Guide part 15: Engagement part 16: Guide engagement groove 17: Fixing piece bolt hole 20: Second outer wall panel mounting bracket 21: Fixing piece 22A, 22B: Contact piece 23: Flange 24: Guide part 25: Engagement part 26: Guide engagement groove 27: Fixing piece bolt hole 28: Bolt hole 30: Soil Beam (Beam)
31: Upper flange 35: Foundation 40: Inter-story beam (beam)
41: Upper flange 42: Lower flange 45: External corner post 50, 50A: Exterior wall panel 51: Vertical beam 52: Horizontal beam 53: Middle vertical beam 54: Exterior wall panel frame (frame)
54a: Vertical base material 55: Exterior wall surface material 55a: Vertical joint 55b: Horizontal joint 56: Upper mounting bolt (mounting bolt)
57: Lower mounting bolt (mounting bolt)
58: bolt hole 59: fixing bolt 60: bolt nut 70: preceding installation member 71: first gripping piece 72: second gripping piece 73: butterfly bolt 74: gripping piece 75: base piece 76: joined piece 77: first substrate 80: succeeding installation member 81: base piece 82: joining piece 83: second substrate 84: gripping portion 85: engaging piece 86: connecting rod 9 0: Exterior wall panel drawing aid

Claims (5)

A first outer wall panel mounting bracket is attached to the beam of the lower floor, and a second outer wall panel mounting bracket is attached to the upper floor beam, and the mounting bolt attached to the frame constituting the outer wall panel is dropped into and engaged with the guide engagement groove provided in the first outer wall panel mounting bracket. , an external wall panel pulling aid,
a pre-installed member composed of a set of two gripping pieces for gripping a portion of the interior side of the lower flange of the upper floor beam and a first base material to which at least one set of the gripping pieces is fixed;
a trailing installation member composed of an engagement piece engaged with the upper end of the outer wall panel, a second base material joined to the first base material, and a connecting rod connecting the engagement piece and the second base material and capable of adjusting the separation between the two,
The outer wall panel pull-up assisting tool is formed by drawing the trailing installation member engaged with the engagement piece to the upper end of the outer wall panel with respect to the preceding installation member attached to the lower flange, and joining the second base material to the first base material, and the upper part of the frame constituting the outer wall panel is brought into contact with the second outer wall panel mounting bracket. 2. The external wall panel pulling aid according to claim 1, wherein the preceding installation member has two sets of the one set of gripping pieces, and the two sets of gripping pieces are attached to the first base material. 3. The external wall panel drawing aid according to claim 1 or 2, wherein bolt holes are formed in corresponding positions of the first base material and the second base material, and the preceding installation member and the subsequent installation member are joined by aligning the bolt holes of both and screwing the bolts. 4. The external wall panel drawing aid according to any one of claims 1 to 3, wherein the trailing installation member has a grip portion. a preceding installation member mounting step of mounting the preceding installation member constituting the outer wall panel drawing aid according to any one of claims 1 to 4 to a location on the indoor side of the lower flange of the upper floor beam;
The outer wall panel is slid along the building frame, the mounting bolt attached to the frame constituting the outer wall panel is dropped and engaged with the guide engagement groove provided in the first outer wall panel mounting bracket attached to the beam of the lower floor, the engaging piece of the trailing installation member constituting the outer wall panel drawing aid is engaged with the upper end of the outer wall panel, the trailing installation member is pulled indoors, and the second base material is joined to the first base material to form the outer wall panel drawing aid, and the second outer wall panel mounting. an exterior wall panel pulling installation step of aligning the bolt holes of the frame with bolt holes of metal fittings, and inserting bolts through both of the bolt holes to fasten the exterior wall panels.

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