JP7815306B2 - External wall support structure - Google Patents

Description

The present invention relates to an exterior wall support structure.

Patent Document 1 discloses an exterior wall structure that constitutes the outer perimeter wall of a building (an industrialized house with a steel frame). This exterior wall structure includes a plurality of panel materials, and the panel materials may be, for example, lightweight aerated concrete (ALC) panels, PC concrete panels, extruded cement boards, or the like.
As such, in steel-frame buildings, it is common to use curtain walls made of ALC panels, extruded cement boards, etc. for the exterior walls. Furthermore, on floors with high floor heights (the height from the floor surface of one floor to the floor surface of the floor directly above), it is common to install support materials for the curtain walls (wind-resistant beams).

Japanese Patent Application Laid-Open No. 2021-14692

However, installing wind-resistant beams creates unevenness or beam marks on the exterior surface of the building, which creates a poor appearance.
On the other hand, it is also possible to set the thickness of curtain walls on higher floors to a dimension that does not require the installation of wind beams. In other words, if the thickness of the curtain walls is set to a dimension that corresponds to the floor height (for example, if the curtain walls on higher floors are made thicker than the curtain walls on lower floors), there is no need to install wind beams.
However, if the upper and lower floors have different floor heights and the thickness of the curtain wall is set to a dimension corresponding to the floor height, the surfaces (exterior surfaces) of the upper and lower floor curtain walls will not be flush with each other. In other words, if the thickness of the curtain wall is different between the upper and lower floors, a difference in level will occur in the finished exterior surface, which will look unattractive.
The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the appearance of the finished surface.

The invention described in claim 1 is, for example, as shown in FIGS. 1 to 6, 8, and 9,
An exterior wall support structure (2) that supports a first wall panel (11) provided on a first floor (F1) and a second wall panel (12) provided on a second floor (F2) in a vertically aligned state,
a first pillar 21 provided on the first floor F1;
A second pillar 22 provided on the second floor F2;
and a ceiling beam (second beam 32) provided on the lower floor of the first floor F1 and the second floor F2 arranged vertically,
The first floor F1 is set to have a higher floor height than the second floor F2,
When the thickness direction of the first wall panel 11 and the second wall panel 12 is defined as a predetermined direction, and the outdoor side of both sides in the predetermined direction is defined as a first side, and the indoor side is defined as a second side,
The first wall panel 11 is set to have a dimension (thickness dimension) in the predetermined direction longer than that of the second wall panel 12 according to the floor height,
The dimension of the first wall panel 11 in the predetermined direction is set to a dimension that does not require the provision of a wind-resistant beam on the first floor F1,
The first wall panel 11 and the second wall panel 12 are supported in a state in which the first side surfaces (outdoor side surfaces) of these wall panels are flush with each other.

According to the invention described in claim 1, the wall panels of the first floor F1, which is higher than the second floor F2, are the first wall panels 11 which are thicker than the second wall panels 12, so there is no need to provide wind beams on the first floor F1. This prevents steps from occurring on the finished surface on the indoor side, improving the appearance of the finished surface on the indoor side.
Furthermore, the exterior wall support structure 2 supports the first wall panel 11 and the second wall panel 12, which have different dimensions (thickness dimensions) in a predetermined direction, in a state where they are lined up one above the other and where the first side surface (outdoor side surface) of the first wall panel 11 and the first side surface (outdoor side surface) of the second wall panel 12 are flush with each other. This prevents steps from occurring on the finished surface on the outdoor side, improving the appearance of the finished surface on the outdoor side.

The invention described in claim 2 is, for example, as shown in Figures 2 and 3, in the exterior wall support structure 2 described in claim 1,
The first pillar 21 is
The dimension in the predetermined direction is set to be shorter than that of the second pillar 22,
The first side surface is located closer to the second side than the second pillar 22.

According to the invention described in claim 2, the difference between the dimension in a predetermined direction of the first column 21 and the dimension in a predetermined direction of the second column 22 can absorb the difference between the dimension in a predetermined direction (thickness dimension) of the first wall panel 11 and the dimension in a predetermined direction (thickness dimension) of the second wall panel 12. This effectively prevents steps from occurring on the finished surface, thereby efficiently improving the appearance of the finished surface.

The invention described in claim 3 is, for example, as shown in Figures 6 and 9, in the exterior wall support structure 2 described in claim 1 or 2,
a first connecting means 40 for connecting the first wall panel 11 to the ceiling beam (second beam 32);
and a second connecting means 50 for connecting the second wall panel 12 to the ceiling beam (second beam 32).

According to the invention described in claim 3, the first wall panel 11 and the second wall panel 12, which are arranged vertically and have different dimensions (thickness dimensions) in a specific direction, are connected to a common structural material (ceiling beam (second beam 32)). Therefore, the first wall panel 11 and the second wall panel 12 can be supported without providing structural materials that would create steps in the finished surface, thereby efficiently improving the appearance of the finished surface.

The invention described in claim 4 is, for example, as shown in Figures 6 and 9, in the exterior wall support structure 2 described in claim 3,
The first connecting means 40 includes a first L-shaped steel member (piece member 41 or first angle member 42) having one piece (first vertical piece 41a or vertical support piece 42a) fixed to the first wall panel 11 and the other piece (first horizontal piece 41b or horizontal support piece 42b) fixed to the ceiling beam (second beam 32),
The second connecting means 50 is characterized in that it includes a second L-shaped steel member (second angle member 51) having one piece (second vertical piece 51a) fixed to the second wall panel 12 and the other piece (second horizontal piece 51b) fixed to the ceiling beam (second beam 32).

According to the invention described in claim 4, simply connecting the wall panels 11, 12 to the ceiling beam (second beam 32) using the connecting means 40, 50 allows the wall panels 11, 12 to be supported perpendicular to the ceiling beam (along the vertical direction). Therefore, the work of installing the wall panels 11, 12 (the work of supporting the wall panels 11, 12 on the exterior wall support structure 2) is easy, and construction is simple, preventing unevenness in the finished surface.

The invention described in claim 5 is, for example, as shown in Figures 6 and 9, in the exterior wall support structure 2 described in claim 4,
The one piece (first vertical piece 41a or vertical support piece 42a) of the first L-shaped steel material (piece material 41 or first angle material 42) is located on the second side of the end face of the first side of the ceiling beam (second beam 32),
One of the pieces (second vertical piece 51a) of the second L-shaped steel material (second angle material 51) is characterized by being located on the first side of the first end face of the ceiling beam (second beam 32).

According to the invention described in claim 5, the position of one end (the position between the first vertical piece 41a and the second vertical piece 51a, or the position between the vertical support piece 42a and the second vertical piece 51a) of the first L-shaped steel member (piece member 41 or first angle member 42) fixed to the first wall panel 11 and the second L-shaped steel member (second angle member 51) fixed to the second wall panel 12 is made different to accommodate the difference between the dimension (thickness) of the first wall panel 11 and the dimension (thickness) of the second wall panel 12. This makes it possible to use L-shaped steel members with approximately the same length of the other end (the length between the first horizontal piece 41b and the second horizontal piece 51b, or the length between the horizontal support piece 42b and the second horizontal piece 51b) for the first and second L-shaped steel members, thereby providing an exterior wall support structure 2 that is easy to adopt.

The invention described in claim 6 is, for example, as shown in Figures 1 to 6, 8 and 9, in the exterior wall support structure 2 described in claim 4,
Of the first floor F1 and the second floor F2, the first floor F1 is an upper floor and the second floor F2 is a lower floor,
The first L-shaped steel material (piece material 41, or first angle material 42) has one piece (first vertical piece 41a, or vertical support piece 42a) fixed to the lower end of the first wall panel 11, and the other piece (first horizontal piece 41b, or horizontal support piece 42b) fixed to the upper surface of the ceiling beam (second beam 32),
The second L-shaped steel member (second angle member 51) is characterized in that one piece (second vertical piece 51a) is fixed to the upper end of the second wall panel 12, and the other piece (second horizontal piece 51b) is fixed to the underside of the ceiling beam (second beam 32).

According to the invention described in claim 6, of the vertically arranged wall panels, the first wall panel 11, which is the upper wall panel, is connected to the upper surface of the ceiling beam, and the second wall panel 12, which is the lower wall panel, is connected to the underside of the ceiling beam. In other words, vertically arranged wall panels 11, 12 with different dimensions (thickness dimensions) in a specified direction are connected to different locations on the ceiling beam (second beam 32), thereby providing an exterior wall support structure 2 that is easy to adopt.

The invention described in claim 7 is, for example, as shown in Figures 6 and 9, in the exterior wall support structure 2 described in claim 6,
The first connecting means 40 includes a third L-shaped steel member (first angle member 42 or piece member 41) that receives the lower end of the first wall panel 11,
One of the pieces (first vertical piece 41a, or vertical support piece 42a) of the first L-shaped steel material (piece material 41, or first angle material 42) is fixed to the lower end of the first wall panel 11 via the third L-shaped steel material (first angle material 42, or piece material 41).

According to the invention described in claim 7, the work of fixing the first L-shaped steel member (piece member 41 or first angle member 42) to the first wall panel 11 can be performed with the first wall panel 11 placed on the third L-shaped steel member (first angle member 42 or piece member 41). This facilitates the work of installing the first wall panel 11 (the work of supporting the first wall panel 11 on the exterior wall support structure 2), and the resulting finished surface can be prevented from having uneven surfaces with simple construction.

This invention can improve the appearance of finished surfaces in buildings where the upper and lower floors have different floor heights.

FIG. 1 is a perspective view showing an example of a building skeleton structure. FIG. 1 is a side view showing an example of a building skeleton structure. FIG. 1 is a side view showing an example of a main part of a building's skeleton structure. FIG. 1 is a cross-sectional view showing an example of a building. FIG. 1 is a perspective view showing an example of an exterior wall support structure that supports wall panels with different thickness dimensions. FIG. 1 is a vertical cross-sectional view showing an example of an exterior wall support structure that supports wall panels with different thickness dimensions. FIG. 1 is a vertical cross-sectional view showing an example of an exterior wall support structure that supports wall panels having the same thickness dimension. Modification: A perspective view showing an example of an exterior wall support structure that supports wall panels with different thickness dimensions. Modification: A vertical cross-sectional view showing an example of an exterior wall support structure that supports wall panels with different thickness dimensions.

Embodiments of the present invention will be described below with reference to the drawings. However, while the embodiments described below are subject to various limitations that are technically preferable for implementing the present invention, the technical scope of the present invention is not limited to the following embodiments (including modifications) and illustrated examples. Note that the directions (east-west, north-south, up-down) in the following embodiments (including modifications) and illustrated examples are set solely for the convenience of explanation.

Furthermore, in the following description, when ordinal numbers such as "first" and "second" are attached to common names, the ordinal numbers are used only to identify the objects to which they are attached. Ordinal numbers do not limit the objects to which they are attached to a specific object, nor do they specify the order, rank, order, hierarchy, priority, or subordination of the objects to which they are attached.

"building"
Fig. 1 is a perspective view showing an example of the skeleton structure of a building 1. Fig. 2 is a side view showing an example of the skeleton structure of a building 1, as seen from the east side. Fig. 3 is a side view showing an example of a main part of the skeleton structure of a building 1, as seen from the east side. Fig. 4 is a vertical cross-sectional view showing an example of a building 1, as seen from the east side.
1 to 4, the building 1 of this embodiment is a steel-framed building. That is, the building 1 of this embodiment has a steel frame structure made up of skeleton structural members such as steel columns and steel beams.

Wall Panel
As shown in Fig. 4, the exterior wall (perimeter wall) of the building 1 is composed of a plurality of wall panels (curtain walls). Specifically, the exterior wall of the building 1 is composed of at least a plurality of first wall panels 11 and a plurality of second wall panels 12.
In this embodiment, lightweight aerated concrete (ALC) panels are used as the wall panels 11, 12, but this is not limited to this and other types of panel materials (for example, extruded cement boards, etc.) may also be used.
In addition, in this embodiment, a panel material having a thickness W1 of 150 mm is used as the first wall panel 11, but this is not limited to this.
In addition, in this embodiment, a panel material having a thickness W2 of 100 mm is used as the second wall panel 12, but this is not limited to this.

2, in the building 1 of this embodiment, the floor height H1 of the fifth floor (first floor F1) is set higher than the floor height H2 of the fourth floor (second floor F2) immediately below the fifth floor (H1>H2). Also, the floor height H3 of the third floor (third floor F3) is set equal to the floor height H2 of the fourth floor (second floor F2) immediately above the third floor (H2=H3).
As shown in Figure 4, the first wall panel 11, which has a greater thickness than the second wall panel 12, is provided on the south side of the fifth floor. This eliminates the need to provide a wind beam on the south side of the fifth floor (a floor higher than the other floors), making it possible to form a finished surface without steps as the finished surface S1 on the indoor side on the south side of the fifth floor. In other words, the thickness W1 of the first wall panel 11 provided on the south side of the fifth floor is set to a dimension that eliminates the need to provide a wind beam on the south side of the fifth floor.

A first wall panel 11 is provided on the south side of the fifth floor, while a second wall panel 12 is provided on the south side of the fourth floor. Therefore, the first wall panel 11 provided on the south side of the fifth floor and the wall panel provided directly below the first wall panel 11 (i.e., the second wall panel 12 provided on the south side of the fourth floor) have different thicknesses.
In this embodiment, the building 1 is provided with an exterior wall support structure 2, which supports a first wall panel 11 provided on the south side of the fifth floor (first floor F1) and a second wall panel 12 provided on the south side of the fourth floor (second floor F2), which have different thickness dimensions, in a vertically aligned state. In other words, the exterior wall support structure 2 of this embodiment is an exterior wall support structure that supports wall panels with different thickness dimensions among the exterior wall support structures provided in the building 1.

《External wall support structure》
Fig. 5 is a perspective view showing an example of the exterior wall support structure 2 in this embodiment. Fig. 6 is a vertical cross-sectional view showing an example of the exterior wall support structure 2 in this embodiment.
5 and 6, the exterior wall support structure 2 is configured to include a first column 21 provided on the south side of the fifth floor (first floor F1), a second column 22 provided on the south side of the fourth floor (second floor F2), a second beam 32 (ceiling beam) provided on the south side of the fourth floor (second floor F2), a first connecting means 40 that connects the first wall panel 11 to the second beam 32, and a second connecting means 50 that connects the second wall panel 12 to the second beam 32. Note that the first column 21 and the second column 22 are not shown in FIG.

As shown in FIG. 3, the dimension C1 in the north-south direction of the first pillar 21 is set to be shorter than the dimension C2 in the north-south direction of the second pillar 22 (C1<C2).
In this embodiment, the first column 21 is a square steel pipe with a square cross section and a north-south dimension C1 of 250 mm, i.e., a square steel pipe with side lengths A x B of 250 mm x 250 mm, but is not limited to this.
In this embodiment, in addition to the column provided on the south side of the fifth floor, the column provided on the south side of the sixth floor is also a first column 21. As shown in Figures 2 and 3, the first column 21 on the fifth floor is composed of two square steel pipes (250 mm x 250 mm square steel pipes) lined up one above the other, and the first column 21 on the sixth floor is composed of one square steel pipe (250 mm x 250 mm square steel pipe), but the number of column materials (250 mm x 250 mm square steel pipes in this embodiment) constituting the first column 21 can be changed as appropriate. That is, in this embodiment, the first column 21 refers to a column whose north-south dimension is "C1."

In this embodiment, the second column 22 is a square steel pipe with a square cross section and a north-south dimension C2 of 300 mm, i.e., a square steel pipe with side lengths A x B of 300 mm x 300 mm, but is not limited to this.
In this embodiment, in addition to the column on the south side of the fourth floor, the column on the south side of the third floor is also a second column 22. As shown in FIG. 2 , the second column 22 on the fourth floor is constructed of one square steel pipe (300 mm x 300 mm square steel pipe), and the second column 22 on the third floor is constructed of two square steel pipes (300 mm x 300 mm square steel pipes) arranged one above the other, but the number of column materials (300 mm x 300 mm square steel pipes in this embodiment) constituting the second column 22 can be changed as appropriate. That is, in this embodiment, the second column 22 refers to a column whose north-south dimension is "C2."

As shown in Figures 2, 3 and 5, a plurality of (three in this embodiment) diaphragms 23 are integrally provided at the upper end of the second column 22 as column-beam connecting hardware.
Specifically, the upper end of the second column 22 provided on the south side of the fourth floor and the second beam 32 (ceiling beam) provided on the south side of the fourth floor are connected via two diaphragms 23 (in the case of this embodiment, the uppermost diaphragm 23 and the lowermost diaphragm 23) provided on the upper end of the second column 22. In other words, the second beam 32 (ceiling beam) provided on the south side of the fourth floor is fixed to span between the upper ends of the multiple second columns 22 provided on the south side of the fourth floor.

In addition, the upper end of the second column 22 located on the south side of the fourth floor and the lower end of the first column 21 located on the south side of the fifth floor are connected via a single diaphragm 23 (the uppermost diaphragm 23) located at the upper end of the second column 22.
As shown in Figures 2 and 3, the first column 21 and the second column 22 are connected such that the north side of the first column 21 and the north side of the second column 22 are aligned (i.e., the north side of the second column 22 is located on the extension of the north side of the first column 21). As described above, the north-south dimension C1 of the first column 21 is set shorter than the north-south dimension C2 of the second column 22. Therefore, the south side of the first column 21 located on the south side of the fifth floor is set back (located northward) from the south side of the second column 22 located on the south side of the fourth floor. In this embodiment, the setback dimension is set to 50 mm (= 300 mm - 250 mm = C2 - C1).

The second beam 32 connects the upper ends of a pair of opposing second columns 22 provided on the same floor. That is, the second beam 32 provided on the south side of the fourth floor is a ceiling beam for the fourth floor (second floor F2) and a floor beam for the fifth floor (first floor F1).
In this embodiment, in addition to the ceiling beams provided on the south side of the fourth floor, the ceiling beams provided on the south side of the third floor are also second beams 32. As shown in Fig. 1 , the second beams 32 on the third and fourth floors are composed of three H-shaped steel beams lined up east and west. Specifically, the second beams 32 on the third and fourth floors are composed of a bracket material (450 mm x 200 mm H-shaped steel) welded to the upper end of one of a pair of opposing second columns 22, a bracket material (450 mm x 200 mm H-shaped steel) welded to the upper end of the other second column 22, and a central beam material (446 mm x 199 mm H-shaped steel) connecting these bracket materials.
That is, in this embodiment, the second beam 32 uses an H-shaped steel (bracket material (end beam material)) with side lengths H x B of 450 mm x 200 mm and an H-shaped steel (central beam material) with side lengths H x B of 446 mm x 199 mm, but is not limited to this.

In addition, in this embodiment, as shown in FIG. 1, holes for equipment piping, etc. are provided in the second beam 32 (ceiling beam) provided on the south side of the fourth floor (second floor F2), whereas no holes for equipment piping, etc. are provided in the second beam 32 (ceiling beam) provided on the south side of the third floor (third floor F3). Whether or not holes for equipment piping, etc. are provided in the second beam 32, as well as the position and number of holes for equipment piping, etc. provided in the second beam 32, can be changed as appropriate.

The first connecting means 40 is a means for connecting the first wall panel 11 provided on the south side of the fifth floor (first floor F1) to the second beam 32 (ceiling beam) provided on the south side of the fourth floor (second floor F2).
As shown in FIGS. 5 and 6 , the first connecting means 40 is configured to include a plurality of piece members 41 , a first angle member 42 , and a plurality of first mounting hardware 43 .

The piece material 41 is, for example, a piece angle (angle piece) and comprises a pair of pieces 41a, 41b (a first vertical piece 41a and a first horizontal piece 41b). The tip of the first vertical piece 41a of the piece material 41 is positioned south of the tip of the first horizontal piece 41b (i.e., the tip of the first horizontal piece 41b faces north), and the first horizontal piece 41b is welded and fixed to the top surface of the second beam 32 (in this embodiment, the top surface of the upper flange of the H-shaped steel).

The first angle member 42 is a steel member with an L-shaped cross section that supports the lower end of the first wall panel 11. Specifically, the first angle member 42 is, for example, a ruler angle and includes a pair of pieces 42a, 42b (a vertical support piece 42a and a horizontal support piece 42b). The tip of the vertical support piece 42a of the first angle member 42 is located north of the tip of the horizontal support piece 42b (i.e., the tip of the horizontal support piece 42b faces south), and the lower part (base end) of the vertical support piece 42a is welded to the upper part (tip end) of the first vertical piece 41a of the piece member 41. The vertical support piece 42a of the first angle member 42 abuts against the north-side (indoor side) surface of the first wall panel 11, and the horizontal support piece 42b of the first angle member 42 abuts against the lower end surface of the first wall panel 11 via a locking spacer 45. The locking spacer 45 is not shown in FIG. 5.
The first mounting hardware 43 is, for example, a lightning bolt plate. The lower end of the first mounting hardware 43 is welded to the upper part (tip) of the vertical support piece 42a of the first angle iron 42, and the upper end is fixed to the north side (indoor side) surface of the first wall panel 11 by a bolt 44. The bolt 44 is not shown in Figure 5.

The second connecting means 50 is a means for connecting the second wall panel 12 provided on the south side of the fourth floor (second floor F2) to the second beam 32 (ceiling beam) provided on the south side of the fourth floor (second floor F2).
As shown in FIGS. 5 and 6 , the second connecting means 50 is configured to include a second angle member 51 and a plurality of second mounting hardware 52 .

The second angle member 51 is, for example, a straightedge angle and includes a pair of pieces 51a, 51b (a second vertical piece 51a and a second horizontal piece 51b). The tip of the second vertical piece 51a of the second angle member 51 is located south of the tip of the second horizontal piece 51b (i.e., the tip of the second horizontal piece 51b faces north), and the second horizontal piece 51b is welded to the underside of the second beam 32 (in this embodiment, the underside of the bottom flange of the H-shaped steel). The second vertical piece 51a of the second angle member 51 abuts against the north (outdoor) surface of the second wall panel 12.
The second mounting hardware 52 is, for example, a lightning bolt plate. The upper end of the second mounting hardware 52 is welded to the lower part (tip) of the second vertical piece 51 a of the second angle iron 51, and the lower end is fixed to the north side (indoor side) surface of the second wall panel 12 by a bolt 53. The bolt 53 is not shown in Figure 5.

In the first connecting means 40, the first vertical piece 41a of the piece material 41 is located north of the south end face 32a of the second beam 32. Furthermore, the vertical support piece 42a of the first angle member 42, i.e., the piece of the pair of pieces in the first angle member 42 that is fixed to the first vertical piece 41a of the piece material 41, is also located north of the south end face 32a of the second beam 32. Therefore, the north (indoor) surface of the first wall panel 11, i.e., the surface of both sides of the first wall panel 11 that abuts the vertical support piece 42a of the first angle member 42, is located north (indoor) of the south end face 32a of the second beam 32.

On the other hand, in the second connecting means 50, the second vertical piece 51a of the second angle member 51 is located south of the south end face 32a of the second beam 32. Therefore, the north (indoor) surface of the second wall panel 12, i.e., the surface of both sides of the second wall panel 12 that abuts against the second vertical piece 51a of the second angle member 51, is located south (outdoor) of the south end face 32a of the second beam 32.

As described above, in this embodiment, the north (indoor) surface of the first wall panel 11 protrudes (is located northward) from the north (indoor) surface of the second wall panel 12. The protruding dimension is set equal to the difference between the thickness dimension W1 of the first wall panel 11 and the thickness dimension W2 of the second wall panel 12. Specifically, in this embodiment, the protruding dimension is set to 50 mm (= 150 mm - 100 mm = W1 - W2). Therefore, the south (outdoor) surface of the first wall panel 11 and the south (outdoor) surface of the second wall panel 12 are aligned (i.e., the south surface of the second wall panel 12 is located on an extension of the south surface of the first wall panel 11).
That is, the exterior wall support structure 2 of this embodiment supports the first wall panel 11 and the second wall panel 12, which have different thickness dimensions, with the outdoor surfaces of these wall panels flush with each other.

For comparison, an example of an exterior wall support structure 9 that supports wall panels having the same thickness dimension as the exterior wall support structures provided in the building 1 will be described with reference to FIG.
The exterior wall support structure 9 shown in Figure 7 supports a second wall panel 12 provided on the south side of the fourth floor (second floor F2) and a second wall panel 12 provided on the south side of the third floor (third floor F3) in a vertically aligned state.

The exterior wall support structure 9 is configured to include a second column 22 provided on the south side of the fourth floor (second floor F2), a second column 22 provided on the south side of the third floor (third floor F3), a second beam 32 (ceiling beam) provided on the south side of the third floor (third floor F3), and third connecting means 90 that connect the upper and lower second wall panels 12 to the second beam 32. Note that the second column 22 is not shown in Figure 7.
The third connecting means 90 is a means for connecting the second wall panel 12 (upper second wall panel 12) provided on the south side of the fourth floor and the second wall panel 12 (lower second wall panel 12) provided on the south side of the third floor to the second beam 32 (ceiling beam) provided on the south side of the third floor. Specifically, the third connecting means 90 is configured to include a third angle iron 91, a plurality of upper mounting hardware 92, and a plurality of lower mounting hardware 93.

The third angle member 91 is, for example, a straightedge angle and includes a pair of pieces 91 a, 91 b (a third vertical piece 91 a and a third horizontal piece 91 b). The third angle member 91 is fixed by welding to the top surface of the second beam 32 (the top surface of the upper flange of the H-shaped steel in this embodiment) with the tip of the third vertical piece 91 a positioned south of the tip of the third horizontal piece 91 b (i.e., the tip of the third horizontal piece 91 b facing north).
The upper mounting hardware 92 is, for example, a lightning bolt plate. The lower end of the upper mounting hardware 92 is welded to the upper part (tip) of the third vertical piece 91 a of the third angle iron 91, and the upper end is fixed by a bolt 94 to the north-facing (indoor) surface of the upper second wall panel 12.

The lower mounting hardware 93 is an L-shaped steel member in a side view and includes a pair of pieces 93a, 93b (a lower vertical piece 93a and a lower horizontal piece 93b). The tip of the lower vertical piece 93a is located north of the tip of the lower horizontal piece 93b (i.e., the tip of the lower horizontal piece 93b faces south), and the upper part (base end) of the lower vertical piece 93a is welded to the lower part (base end) of the third vertical piece 91a of the third angle iron 91, and the lower part (tip end) of the lower vertical piece 93a is fixed to the north (indoor side) surface of the lower second wall panel 12 by a bolt 95. The lower horizontal piece 93b of the lower mounting hardware 93 abuts against the lower end surface of the upper second wall panel 12.
The upper mounting hardware 92 and the lower mounting hardware 93 may be integrally formed.

In this embodiment, the spacing dimension G1 (see Figure 6) between the upper surface of the second beam 32 (ceiling beam) that constitutes the exterior wall support structure 2 and the lower end surface of the first wall panel 11 (upper wall panel) supported by the exterior wall support structure 2 is set to be the same as the spacing dimension G2 (see Figure 7) between the upper surface of the second beam 32 (ceiling beam) that constitutes the exterior wall support structure 9 and the lower end surface of the upper second wall panel 12 (upper wall panel) supported by the exterior wall support structure 9.
In other words, in this embodiment, the positional relationship (vertical positional relationship) between the ceiling beam and the upper wall panel is the same whether the thickness dimensions of the vertically arranged wall panels are the same or different. Also, in this embodiment, the positional relationship (vertical positional relationship) between the ceiling beam and the lower wall panel is the same whether the thickness dimensions of the vertically arranged wall panels are the same or different.

"effect"
According to this embodiment, the following excellent effects are achieved.
The exterior wall support structure 2 of this embodiment is an exterior wall support structure that supports a first wall panel 11 provided on the fifth floor (first floor F1) and a second wall panel 12 provided on the fourth floor (second floor F2) in a vertically aligned state, and is equipped with a first column 21 provided on the first floor F1, a second column 22 provided on the second floor F2, and a second beam 32 (ceiling beam) provided on the lower floor of the vertically aligned first floor F1 and second floor F2, and the first floor F1 is set to have a higher floor height than the second floor F2. If the thickness direction of the first wall panel 11 and the second wall panel 12 is defined as a predetermined direction (north-south direction), and the outdoor side of both sides in the predetermined direction is defined as the first side (south side), and the indoor side is defined as the second side (north side), the dimension (thickness dimension) of the first wall panel 11 in the predetermined direction is set to be longer than that of the second wall panel 12 (W1 > W2), and the exterior wall support structure 2 supports the first wall panel 11 and the second wall panel 12 with the first side surfaces (outdoor sides) of these wall panels flush with each other.

Therefore, the wall panels of the first floor F1, which is higher than the second floor F2, are the first wall panels 11 which are thicker than the second wall panels 12, so there is no need to provide wind beams on the first floor F1. This prevents steps from occurring on the finished surface S1 on the indoor side, improving the appearance of the finished surface S1 on the indoor side.
Furthermore, the exterior wall support structure 2 supports the first wall panel 11 and the second wall panel 12, which have different dimensions (thickness dimensions) in a predetermined direction, in a state where they are lined up one above the other, and in a state where the first side surface (outdoor side surface) of the first wall panel 11 and the first side surface (outdoor side surface) of the second wall panel 12 are flush with each other (aligned state). This prevents steps from occurring on the finished surface on the outdoor side, improving the appearance of the finished surface on the outdoor side.

Furthermore, in the exterior wall support structure 2 of this embodiment, the dimension C1 in a specified direction (north-south direction) of the first column 21 can be set shorter than the dimension C2 in a specified direction (north-south direction) of the second column 22 (C1 < C2), and the first side face (south side face) of the first column 21 can be positioned closer to the second side (north side) than the first side face (south side face) of the second column 22.

This configuration allows for the installation of second columns 22 on the second floor F2 where the second wall panel 12 is installed, and for the installation of first columns 21 that are thinner (narrower) than the second columns 22 on the first floor F1 where the first wall panel 11, which has a longer dimension (thickness dimension) in a predetermined direction than the second wall panel 12, is installed. Therefore, the difference between the dimension C1 in the predetermined direction of the first columns 21 and the dimension C2 in the predetermined direction of the second columns 22 can absorb the difference between the dimension W1 in the predetermined direction of the first wall panel 11 and the dimension W2 in the predetermined direction of the second wall panel 12. This effectively prevents steps from occurring on the finished surfaces (indoor-facing finished surface S1, outdoor-facing finished surface), thereby efficiently improving the appearance of the finished surfaces.

In addition, the exterior wall support structure 2 of this embodiment can be equipped with a first connecting means 40 that connects the first wall panel 11 to the second beam 32 (ceiling beam), and a second connecting means 50 that connects the second wall panel 12 to the second beam 32 (ceiling beam).

This configuration makes it possible to connect the first wall panel 11 and the second wall panel 12, which are arranged vertically and have different dimensions (thickness dimensions) in a predetermined direction, to a common structural material (second beam 32). This makes it possible to support the first wall panel 11 and the second wall panel 12 without using structural materials that would cause steps on the finished surface, thereby efficiently improving the appearance of the finished surface.
That is, it is possible to connect one of the first wall panel 11 and the second wall panel 12 to the second beam 32 and connect the other wall panel to another structural material, but providing that other structural material separately could result in a step on the finished surface on the indoor side, which could deteriorate the appearance, just as in the case of providing a wind-resistant beam. In contrast, by connecting the first wall panel 11 and the second wall panel 12 to a common structural material (the second beam 32), it is no longer necessary to provide that other structural material (a structural material that would create a step on the finished surface on the indoor side), which can efficiently prevent a step from occurring on the finished surface S1 on the indoor side and efficiently improve the appearance of the finished surface S1 on the indoor side.

In addition, in the exterior wall support structure 2 of this embodiment, the first connecting means 40 can include a first L-shaped steel member (piece member 41) having a first vertical piece 41a (one piece) fixed to the first wall panel 11 and a first horizontal piece 41b (the other piece) fixed to the second beam 32 (ceiling beam), and the second connecting means 50 can include a second L-shaped steel member (second angle member 51) having a second vertical piece 51a (one piece) fixed to the second wall panel 12 and a second horizontal piece 51b (the other piece) fixed to the second beam 32 (ceiling beam).

With this configuration, simply connecting the first wall panel 11 to the second beam 32 (ceiling beam) using the first connecting means 40 makes it possible to support the first wall panel 11 perpendicular to the second beam 32 (along the vertical direction), and simply connecting the second wall panel 12 to the second beam 32 (ceiling beam) using the second connecting means 50 makes it possible to support the second wall panel 12 perpendicular to the second beam 32 (along the vertical direction). This simplifies the installation of the wall panels 11, 12 (the work of supporting the wall panels 11, 12 on the exterior wall support structure 2), thereby preventing steps from occurring on the finished surfaces (indoor-facing finished surface S1 and outdoor-facing finished surface) with simple construction.

In addition, in the exterior wall support structure 2 of this embodiment, it is possible to position the first vertical piece 41a (one piece) of the first L-shaped steel material (piece material 41) on the second side (north side) of the first end face (south side end face) of the second beam 32 (ceiling beam), and it is possible to position the second vertical piece 51a (one piece) of the second L-shaped steel material (second angle material 51) on the first side (south side) of the first end face (south side end face) of the second beam 32 (ceiling beam).
In other words, in response to the difference between the dimension W1 in a specified direction of the first wall panel 11 and the dimension W2 in a specified direction of the second wall panel 12, it is possible to make the positions of the vertical pieces 41a, 51a (specifically, the positions in a specified direction (north-south direction) relative to the second beam 32) different between the first L-shaped steel material (piece material 41) fixed to the first wall panel 11 and the second L-shaped steel material (second angle material 51) fixed to the second wall panel 12.

By configuring it in this manner, L-shaped steel materials with approximately the same length for the first horizontal piece 41b and the second horizontal piece 51b can be used as the first L-shaped steel material (piece material 41) and the second L-shaped steel material (second angle material 51). Therefore, it is possible to accommodate the difference between the dimension W1 in the specified direction of the first wall panel 11 and the dimension W2 in the specified direction of the second wall panel 12 without having to prepare as the first L-shaped steel member (piece member 41) an L-shaped steel member in which the first horizontal piece 41b is shorter than the second horizontal piece 51b (for example, an L-shaped steel member that is shorter by the same length as the difference between the dimension W1 in the specified direction of the first wall panel 11 and the dimension W2 in the specified direction of the second wall panel 12), or prepare as the second L-shaped steel member (second angle member 51) an L-shaped steel member in which the second horizontal piece 51b is longer than the first horizontal piece 41b (for example, an L-shaped steel member that is longer by the same length as the difference between the dimension W1 in the specified direction of the first wall panel 11 and the dimension W2 in the specified direction of the second wall panel 12), thereby providing an exterior wall support structure 2 that is easy to adopt.

In the exterior wall support structure 2 of this embodiment, of the first floor F1 and the second floor F2, the first floor F1 can be the upper floor (fifth floor) and the second floor F2 can be the lower floor (fourth floor). The first L-shaped steel material (piece material 41) can be configured so that a first vertical piece 41a (one piece) is fixed to the lower end of the first wall panel 11 and a first horizontal piece 41b (the other piece) is fixed to the upper surface of the second beam 32 (ceiling beam), and the second L-shaped steel material (second angle iron 51) can be configured so that a second vertical piece 51a (one piece) is fixed to the upper end of the second wall panel 12 and a second horizontal piece 51b (the other piece) is fixed to the lower surface of the second beam 32 (ceiling beam).
In other words, of the wall panels lined up vertically, the upper wall panel, the first wall panel 11, can be connected to the upper surface of the second beam 32, and the lower wall panel, the second wall panel 12, can be connected to the lower surface of the second beam 32.

By configuring it in this manner, it becomes possible to connect the first wall panel 11 and the second wall panel 12, which are arranged one above the other and have different dimensions (thickness dimensions) in a specified direction, to different parts of the second beam 32 (ceiling beam), thereby providing an exterior wall support structure 2 that is easy to adopt, in which the connecting means 40, 50 are made up only of existing parts (existing steel materials, metal fittings, etc.).
That is, just as in the case of connecting vertically adjacent wall panels of the same thickness to a ceiling beam (see Figure 7), when connecting vertically adjacent wall panels 11 and 12 of different thicknesses to the same location on a ceiling beam (the upper surface of the ceiling beam in the case of Figure 7), it is necessary to prepare parts that take into account the difference in thickness of the wall panels 11 and 12. For example, as a part that has the same function as the lower mounting hardware 93, it is necessary to prepare a mounting hardware in which the protrusion dimension of the upper part (base end) of the vertical piece relative to the lower part (tip end) of the vertical piece is longer than the protrusion dimension of the lower mounting hardware 93 (the protrusion dimension of the upper part of the lower vertical piece 93a relative to the lower part of the lower vertical piece 93a) (for example, longer by the difference in thickness of the wall panels 11 and 12). In contrast, by connecting vertically arranged wall panels 11, 12 with different thickness dimensions to different locations on the ceiling beam, as in this embodiment, the connecting means 40, 50 can be constructed using only existing products such as piece material 41, angle irons 42, 51, and mounting hardware 43, 52 such as lightning plates, making it possible to provide an exterior wall support structure 2 that is easy to adopt.

The first floor F1 is not limited to the fifth floor, but may be any floor directly above the second floor F2.
Furthermore, the second floor F2 is not limited to the fourth floor, but may be any floor directly below the first floor F1.
Also, the first floor F1 may be the lower floor and the second floor F2 may be the upper floor.

In addition, in the exterior wall support structure 2 of this embodiment, the first connecting means 40 can include a third L-shaped steel member (first angle member 42) that supports the lower end of the first wall panel 11, and the first vertical piece 41a (one piece) of the first L-shaped steel member (piece member 41) can be fixed to the lower end of the first wall panel 11 via the third L-shaped steel member (first angle member 42).

This configuration makes it possible to fasten the first L-shaped steel member (piece member 41) to the first wall panel 11 while the first wall panel 11 is placed on the third L-shaped steel member (first angle member 42). This simplifies the installation of the first wall panel 11 (the work of supporting the first wall panel 11 on the exterior wall support structure 2), and makes it possible to prevent steps from occurring on the finished surfaces (indoor-side finished surface S1 and outdoor-side finished surface) with simple construction.

In recent years, there has also been a demand to achieve the Sustainable Development Goals (SDGs), and various initiatives are being undertaken in the construction industry.
The exterior wall support structure 2 of this embodiment is applied to the periphery of the building 1, and the first column 21 and second column 22, which are steel columns, and the second beam 32 (ceiling beam), which is a steel beam, are used as structural materials that bear the load acting on the building 1. Therefore, the building 1 using the exterior wall support structure 2 of this embodiment has a long lifespan. Therefore, the exterior wall support structure 2 of this embodiment can contribute to the achievement of SDGs Goal 7 "Affordable and clean energy for all," Goal 11 "Sustainable cities and communities," Goal 13 "Take urgent action to combat climate change," etc.

<Modification>
As shown in Figures 8 and 9, the positions of the piece material 41 and the first angle material 42 may be reversed.
That is, a first angle member 42 may be used as the first L-shaped steel member, one piece of which (vertical support piece 42a) is fixed to the first wall panel 11 and the other piece of which (horizontal support piece 42b) is fixed to the second beam 32, and a piece member 41 may be used as the third L-shaped steel member that supports the lower end of the first wall panel 11, with one piece (vertical support piece 42a) of the first L-shaped steel member (first angle member 42) being fixed to the lower end of the first wall panel 11 via the third L-shaped steel member (piece member 41).

When the first wall panel 11 is supported by the first angle member 42 as in the above embodiment, a locking spacer 45 is provided between the lower end surface of the first wall panel 11 and the horizontal support piece 42b of the first angle member 42, as shown in Figure 6, for example. In contrast, when the first wall panel 11 is supported by the piece member 41 as in this modified example, it is not necessary to provide a locking spacer 45 between the lower end surface of the first wall panel 11 and the first horizontal piece 41b of the piece member 41, as shown in Figure 9.

2 Exterior wall support structure 11 First wall panel 12 Second wall panel 21 First column 22 Second column 32 Second beam (ceiling beam)
40 First connecting means 41 Piece material (first L-shaped steel material)
41a First vertical piece (one piece)
41b First horizontal piece (other piece)
42 First angle steel (third L-shaped steel)
50 Second connecting means 51 Second angle member (second L-shaped steel member)
51a Second vertical piece (one piece)
51b Second horizontal piece (the other piece)
F1 5th floor (first floor)
F2 4th floor (2nd floor)

Claims (7)

An exterior wall support structure that supports a first wall panel provided on a first floor and a second wall panel provided on a second floor in a vertically aligned state,
a first pillar provided on the first floor;
A second column provided on the second floor;
and a ceiling beam provided on the lower floor of the first floor and the second floor arranged vertically,
The first floor is set to have a higher floor height than the second floor,
When the thickness direction of the first wall panel and the second wall panel is defined as a predetermined direction, and the outdoor side of both sides in the predetermined direction is defined as a first side, and the indoor side is defined as a second side,
The first wall panel is set to have a dimension in the predetermined direction longer than that of the second wall panel according to the floor height ,
The dimension of the first wall panel in the predetermined direction is set to a dimension that does not require the provision of a wind-resistant beam on the first floor,
An exterior wall support structure characterized in that the first wall panel and the second wall panel are supported with the first side surfaces of these wall panels flush with each other. The exterior wall support structure according to claim 1,
The first pillar is
The dimension in the predetermined direction is set to be shorter than that of the second pillar,
An exterior wall support structure characterized in that the first side surface is located on the second side relative to the second column. The exterior wall support structure according to claim 1 or 2,
a first connecting means for connecting the first wall panel to the ceiling beam;
and second connecting means for connecting the second wall panel to the ceiling beam. The exterior wall support structure according to claim 3,
the first connecting means includes a first L-shaped steel member, one end of which is fixed to the first wall panel and the other end of which is fixed to the ceiling beam;
The second connecting means includes a second L-shaped steel member having one end fixed to the second wall panel and the other end fixed to the ceiling beam. The exterior wall support structure according to claim 4,
The one piece of the first L-shaped steel material is located on the second side relative to the first end face of the ceiling beam,
An exterior wall support structure characterized in that one of the pieces of the second L-shaped steel member is located on the first side of the first end face of the ceiling beam. The exterior wall support structure according to claim 4,
Of the first floor and the second floor, the first floor is an upper floor and the second floor is a lower floor,
one end of the first L-shaped steel member is fixed to a lower end of the first wall panel, and the other end is fixed to an upper surface of the ceiling beam;
An exterior wall support structure characterized in that one piece of the second L-shaped steel member is fixed to the upper end of the second wall panel and the other piece is fixed to the underside of the ceiling beam. The exterior wall support structure according to claim 6,
the first connecting means includes a third L-shaped steel member that receives a lower end of the first wall panel;
An exterior wall support structure characterized in that one piece of the first L-shaped steel member is fixed to the lower end of the first wall panel via the third L-shaped steel member.