JP2023073490A - building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a large space with excellent usability and without damaging function such as a support of an upper load or a resistance force to an outer force even though bearing walls exposed in a room are reduced as much as possible.

SOLUTION: A skeleton reinforcement structure 10 is provided in an attic space above a ceiling 6 of an indoor space 5 in a building 1, and the skeleton reinforcement structure 10 comprises a series of first horizontal members 11 stretched between opposite bearing walls 1a among the skeleton while supporting an upper structure provided above the bearing walls 1a and a second horizontal member 12 stretched between the series of first horizontal members 11 while coupling the series of first horizontal members 11 with each other. An attic thermal insulation structure is provided in the attic space, the attic thermal insulation structure is provided more upward than a lower end of the series of first horizontal members 11 and comprises a face bar 25 dividing the attic space in a vertical direction and a thermal insulation material 20 laid on an upper surface of the face bar 25.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to buildings.

Conventionally, wooden buildings are obliged to install load-bearing walls that support upper loads and have high resistance to external forces such as earthquakes and strong winds. By installing such load-bearing walls in a well-balanced manner, a large space can be formed inside the building.
For example, in the building disclosed in Patent Literature 1, a load-bearing wall is installed perpendicular to the outer wall to form a large space inside the building.

JP-A-2007-138661

However, if load-bearing walls are placed perpendicular to the outer wall and exposed in the room, even if a large space is created, the load-bearing walls will block the view and prevent the flow line from being secured as desired. It wasn't easy to use.
Therefore, it is necessary to omit the load-bearing walls that are arranged perpendicular to the outer wall as much as possible. is concerned.

The present invention has been made in view of the above circumstances. It is to secure a good large space.

In the invention according to claim 1, for example, as shown in FIGS. 7) a building 1 provided in
The frame reinforcement structure 10 is
A set of a plurality of first laterals that are bridged between the opposing load-bearing walls (outer walls) 1a of the frame and support an upper structure (for example, a roof 2) provided on the load-bearing walls 1a a frame 11;
a second horizontal member 12 that is bridged between the set of the plurality of first horizontal members 11 and that connects the set of the plurality of first horizontal members 11;
A ceiling insulation structure is provided in the ceiling space,
The attic insulation structure includes:
a surface member 25 provided above the lower end portion of the set of the plurality of first horizontal members 11 and partitioning the space above and below the ceiling;
and a heat insulating material 20 laid on the upper surface of the face material 25 .

According to the first aspect of the invention, the load-bearing walls (outer walls) 1a facing each other in the building frame are bridged and provided to support the upper structure (for example, the roof 2) provided on the load-bearing walls 1a. A set of plural first horizontal members 11 and a set of plural first horizontal members 11 are bridged and provided, and a set of plural first horizontal members 11 are connected to each other. Since the second horizontal member 12 is provided, the skeleton reinforcing structure 10 is formed in a so-called ladder shape in plan view. That is, the frame reinforcement structure 10 is formed as a structure having high rigidity and easily distributing the load. Then, if such a frame reinforcement structure 10 is introduced into the building 1, even if the load-bearing walls exposed in the rooms (indoor spaces 5) in the building 1 are reduced as much as possible, the upper load (for example, the roof 2) can be supported and the external force can be reduced. A user-friendly large space (indoor space 5) can be ensured without impairing functions such as resistance to heat.
In addition, the ceiling heat insulation structure provided in the ceiling space is provided above the lower end of the set of plural first horizontal members 11, and is provided with a surface material 25 that vertically partitions the ceiling space. Since the heat insulating material 20 laid on the upper surface of the material 25 is provided, it becomes easy to prevent heat transfer in the vertical direction of the building 1 with the face material 25 as a boundary. In addition, if the face material 25 has fire resistance, it becomes easier to prevent flame transmission in the vertical direction of the building 1 with the face material 25 as a boundary.

The invention according to claim 2 is, for example, as shown in FIGS. 3 to 5, in the building 1 according to claim 1,
A ceiling support structure for supporting the ceiling 6 is provided in the ceiling space,
The ceiling support structure includes:
a plurality of suspension beams 30, 31 provided at the lower end of the first horizontal member 11 in the frame reinforcement structure 10;
A plurality of hanging members 32 (33, 34) attached to the plurality of hanging beams 30, 31 and arranged to hang down,
The ceiling 6 is characterized by being suspended and supported by the plurality of hanging members 32 (33, 34).

According to the second aspect of the invention, the ceiling support structure provided in the ceiling space includes a plurality of suspension beams 30 and 31 provided at the lower ends of the first horizontal members 11 in the frame reinforcement structure 10, and a plurality of suspension members 32 (33, 34) attached to the plurality of suspension beams 30, 31 and arranged to hang down, and the ceiling 6 is suspended by the plurality of suspension members 32 (33, 34). Since it is supported, the ceiling 6 can be supported by the first horizontal member 11 in the skeleton reinforcing structure 10 . As a result, the frame reinforcing structure 10 can be used not only to reinforce the frame of the building 1 but also to support the ceiling 6 .

The invention according to claim 3 is, for example, as shown in FIGS. 3 to 5, in the building 1 according to claim 1 or 2,
The attic space is an attic space 7 below the roof 2,
One first horizontal member 11 out of a set of the plurality of first horizontal members 11 has a surface covered with a fire prevention panel 11a to separate the attic space 7 into one side and the other side. It is characterized by constituting an attic bulkhead BW.

According to the third aspect of the invention, the attic space is the attic space 7 below the roof 2, and one of the first horizontal members 11 of the set of plural first horizontal members 11 Since the surface is covered with the fire prevention panel 11a and constitutes the attic partition wall BW that separates the attic space 7 into one side and the other side, the fire is prevented from entering the attic space in accordance with the Building Standards Law Enforcement Ordinance. 7 can be prevented from propagating and expanding. The frame reinforcement structure 10 not only reinforces the frame of the building 1 but also improves the fire resistance of the building 1 .

The invention according to claim 4 is, for example, as shown in FIGS. 3 to 5, in the building 1 according to any one of claims 1 to 3,
The attic space is an attic space 7 below the roof 2,
In the attic space 7, a plurality of the frame reinforcement structures 10 are provided and an attic ventilation structure is provided,
The attic ventilation structure is
A ventilation opening 41 formed in a portion of the load-bearing wall 1a located between the first horizontal members 11 in each of the skeleton reinforcing structures 10;
A ventilation cover material (for example, a ventilation gable 42) formed to allow air to flow while covering a predetermined portion of the roof 2 located above the ventilation opening 41. .

According to the fourth aspect of the invention, the attic space is the attic space 7 below the roof 2, and the attic space 7 is provided with a plurality of frame reinforcement structures 10, and the attic ventilation structure is provided, and the attic ventilation structure includes a ventilation opening 41 formed in a portion of the load-bearing wall 1a located between the first horizontal members 11 in each frame reinforcing structure 10, and the roof 2 The attic space 7 is provided with a ventilation cover material (for example, ventilation gables 42) formed to allow air to flow while covering a predetermined portion positioned above the ventilation opening 41, so that the attic space 7 can be divided into a plurality of The building is divided into a plurality of areas by the frame reinforcing structure 10, and the attic can be ventilated for each of the plurality of areas by using the ventilation opening 41 and the ventilation cover material. As a result, even when it is difficult to improve the ventilation efficiency because the attic space 7 is wide or long on one side, the ventilation efficiency can be improved by performing ventilation for each of a plurality of areas.

The invention according to claim 5 is, for example, as shown in FIGS. 3 to 5, in the building 1 according to claim 4,
The attic ventilation structure is
It is arranged facing the part of the load-bearing wall 1a in which the ventilation opening 41 is formed, is integrally formed continuously with the attic space 7, and is recessed toward the indoor space 5 from the ceiling 6. further comprising a contoured ventilation recess 40,
The ventilation opening 41 is characterized in that its lower end is located below the ceiling 6 .

According to the fifth aspect of the invention, the attic ventilation structure is arranged facing the part of the load-bearing wall 1a in which the ventilation opening 41 is formed, and is integrally formed continuously with the attic space 7. , a ventilation recess 40 formed in a shape recessed toward the indoor space 5 from the ceiling 6, and the lower end of the ventilation opening 41 is positioned below the ceiling 6. , the opening area of the ventilation opening 41 can be increased accordingly. As a result, the amount of air that can be taken into the attic space 7 can be increased, so ventilation efficiency can be improved.
In addition, considering the property that warmed air rises, it is possible to take in air from below the ceiling 6 and form an upward air flow, which makes it easy to improve the ventilation efficiency.

According to the present invention, even if the load-bearing walls exposed in the room are reduced as much as possible, a user-friendly large space can be secured without impairing functions such as support of upper load and resistance to external force.

It is an elevation view showing a building. It is a sectional view showing a building. It is a partially enlarged sectional view showing a building. It is a partially enlarged sectional view showing a building. It is a partially enlarged sectional view showing a building. It is a perspective view which shows the example using a 1st beam receiving metal fitting. It is a perspective view explaining attachment of a first horizontal member. It is a perspective view explaining attachment of a second horizontal member. 1 is a schematic diagram of a building for explaining rules relating to building design; FIG. FIG. 4 is a schematic diagram showing another example of a form for supporting the first horizontal member; FIG. 4 is a schematic diagram showing another example of a form for supporting the first horizontal member; It is a perspective view which shows the example using a 3rd beam receiving metal fitting. It is a perspective view which shows the example using a 4th beam receiving metal fitting.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below have various technically preferable limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. do not have. It should be noted that directions in the following embodiments and illustrated examples are set only for convenience of explanation.

Reference numeral 1 in FIG. 1 etc. indicates a building. The building 1 is a one-storied building with a main frame structure made of wood. The building 1 is generally formed longer in the east-west direction than in the north-south direction.
The length in the north-south direction of the main building of the building 1 of the present embodiment is, for example, over 7 meters, and the length in the east-west direction is, for example, over 30 meters.

The roof 2 (that is, the upper structure) of the purlin portion of the building 1 is a shed roof that slopes downward from the south side to the north side.
The roof 2 is supported by roof beams 2a as purlin materials. The roof beams 2a are arranged along the east-west direction, and are supported by the outer wall 1a of the building 1 and a frame reinforcement structure 10, which will be described later.
Moreover, the roof beam 2a in this embodiment is H-shaped steel.

The building 1 in this embodiment is a non-residential building. Non-residential buildings refer to buildings that are not used for residential purposes, such as offices, shops, factories, warehouses, and various other facilities. The building 1 in this embodiment is used as an office, for example.
Although the building 1 in this embodiment is assumed to be a non-residential building, it is not limited to this and may be a residential building.

The building 1 has a lower roof section 3 attached to the main building portion of the building 1 . The lower part 3 has an entrance porch 3a with stairs, a slope 3b extending from the part of the entrance porch 3a without stairs to the ground, and a storage room (not shown) used from inside the building 1. there is

A portion of the entrance porch 3a excluding the stairs and the storage room are located below the single-sided roof main body 3c of the shed 3. As shown in FIG. In addition, the slope 3b is a folded slope with a landing, and the portion of the slope 3b connected to the entrance porch 3a above the landing is located below the roof main body 3c of the lower roof section 3. ing.

Further, the lower roof section 3 is provided with an outer wall 3d around the lower roof section 3, surrounding a portion positioned below the roof main body 3c. However, an opening is formed on the side of the entrance porch 3a where the stairs are provided, and the entrance porch 3a is open to the outside.

A windbreak room 4 is located inside the building 1 from the entrance porch 3a, and an indoor space 5 used as an office (i.e., room). The indoor space 5 is formed in a rectangular shape in plan view.

The indoor space 5 is appropriately partitioned by a plurality of partition walls 5a and 5b that are non-bearing walls. The plurality of partition walls 5a and 5b include a partition wall 5a that partitions the windbreak room 4 and the indoor space 5. As shown in FIG. The partition walls 5a and 5b are appropriately formed with openings serving as entrances and exits, and fittings for opening and closing the openings are provided as necessary.

Here, the outer wall 1a of the building 1 is a load-bearing wall, and the wall adjacent to the lower roof section 3 (outer wall 1a because it is in contact with the outdoor air) is also a load-bearing wall. The outer wall 1a is appropriately formed with openings for windows, doorways, and the like, and fittings for opening and closing the openings are provided as necessary.
The indoor space 5 is a space surrounded by the outer wall 1a which is such a load-bearing wall. In this indoor space 5, no load-bearing wall is arranged in a state orthogonal to the outer wall 1a in plan view.

In addition, in the building 1 in this embodiment, the constituent elements of the building 1 such as the wall (outer wall 1a), the floor, and the roof 2 are made into panels (wall panel WP, floor panel, roof panel) in advance at the factory, and at the construction site It is constructed by the panel construction method that assembles and constructs these panels. However, the building 1 is not limited to this, and the building 1 may be a wooden structure, a steel structure, a reinforced concrete structure, or the like using a conventional frame construction method or wall construction method.
In addition, a panel is composed of vertical and horizontal stiles assembled into a rectangular shape, and auxiliary crosspieces are assembled vertically and horizontally inside the rectangular frame to form a frame. It is pasted and has a hollow structure. Furthermore, the internal hollow portion is usually filled with a heat insulating material such as glass wool or rock wool.

A ceiling 6 is provided above the indoor space 5, and an attic space 7 is provided between the ceiling 6 and the roof 2. - 特許庁Since the roof 2 is a shed roof as described above, the upper part of the attic space 7 is also inclined to one side accordingly.

A frame reinforcement structure 10 is provided in the attic space 7 as described above. and is provided.

(Body reinforcement structure)
In the attic space 7, as shown in FIGS. 3 to 5, etc., a plurality of frame reinforcement structures 10 are provided to support the load of the roof 2 and exhibit resistance to external forces such as earthquakes and strong winds. there is
The frame reinforcement structure 10 includes a plurality of first horizontal members 11 provided to span between the outer walls 1a on the north side and the south side of the building 1, and a plurality of first horizontal members 11 provided to span between the first horizontal members 11. and a second horizontal member 12.

The first horizontal member 11 is a solid material with a solid content, and may be, for example, a solid material made of solid wood (square lumber: lumber), laminated wood, LVL (Laminated Veneer Lumber), or CLT (Cross Laminated Timber). Further, a solid material made of laminated veneer glulam (LVG) as a shaft material obtained by further splicing and laminating and bonding the laminated LVL lamina may be used. That is, the first horizontal member 11 is a wooden beam member (or a girder member).
In addition, the first horizontal member 11 is set so that the dimension in the thickness direction (beam width) perpendicular to the length direction is shorter than the dimension in the height direction (beam length) perpendicular to the length direction. The beam width of the first horizontal member 11 is set to approximately 80 to 100 mm (90 mm in this embodiment), and the beam length is set to approximately 300 to 650 mm (606 mm in this embodiment).
Note that the first horizontal member 11 may be called a high-strength small wall (or a small wall, Magsa) because the beam length is remarkably long with respect to the beam width.

In the present embodiment, four pairs of first horizontal members 11 are provided in pairs between the outer walls 1a on the north and south sides. Also, the pair of first horizontal members 11 are arranged with an interval S1 (see FIG. 9) from each other.
Although the number of first horizontal members 11 in one set is two in this embodiment, the number is not limited to this, and one set may be three or more. However, if the number of the first horizontal members 11 increases, the first horizontal members 11 of the adjacent pairs overlap. Considering the weight and cost of the first horizontal member 11 itself, the strength of the frame reinforcing structure 10 itself, and the like, it is preferable to use a set of two or three.

A fire prevention surface material 11a is attached to both side surfaces and a lower surface along the length direction of the first horizontal member 11 . In other words, the wooden first horizontal member 11 is provided with fireproof performance by being covered with the fireproof face member 11a. Further, if an opening is formed in the fireproof surface material 11a, the fireproof performance is lowered, so no opening is formed in the fireproof surface material 11a.
A plasterboard or a reinforced plasterboard is used as the fireproof panel 11a. Reinforced plasterboard has further functions such as fire resistance reinforcement, earthquake resistance, moisture absorption, mold prevention, etc., in addition to fireproof performance.

The second horizontal member 12 is a solid material made of the same material as the first horizontal member 11, and is a wooden beam member.
The second horizontal member 12 also has a thickness dimension (beam width) orthogonal to the length direction set shorter than a height dimension (beam length) orthogonal to the length direction. The beam length of the second horizontal member 12 is set shorter than the beam length of the first horizontal member 11 . In this embodiment, the beam width of the second horizontal member 12 is set to about 80 to 100 mm (90 mm in this embodiment), and the beam length is set to about 180 to 360 mm (300 mm in this embodiment). is set.
The second horizontal member 12 may also be called a small beam.

Further, in this embodiment, a plurality of second horizontal members 12 are provided so as to bridge between the pair of first horizontal members 11 and function as a twist stopper. In addition, the plurality of second horizontal members 12 are arranged at intervals.
Note that the number of the second horizontal members 12 bridged between the plurality of first horizontal members 11 is two in this embodiment, but is not limited to this, and may be one. Any number of two or more may be used. However, if the number increases, it will not fit between the outer walls 1a on the north and south sides. It is preferable that the number of the wires is such that the interval between them is about 1820 mm to 2275 mm.
Also, the interval S2 between the plurality of second horizontal members 12 is determined by structural rationality (by structural calculation). In this embodiment, the distance is set to be approximately the same as the interval between the pair of first horizontal members 11 . That is, the frame formed by the two first horizontal members 11 and the two second horizontal members 12 is a square or a rectangle close to a square.
However, it is not limited to this, and as a result of structural rationality, the frame formed by the two first horizontal members 11 and the two second horizontal members 12 is rectangular. good too. That is, the interval S2 between the plurality of second horizontal members 12 may be set wider or narrower than the interval between the pair of first horizontal members 11 .

In addition, the second horizontal member 12 may be arranged so that the upper end surface thereof is at the same height as the upper end surface of the first horizontal member 11, or the upper end surface of the first horizontal member 11 may be positioned lower than the upper end surface of the first horizontal member 11. may be arranged to be positioned

The frame reinforcement structure 10 includes a set of a plurality of (two in this embodiment) first horizontal members 11 and a plurality of second horizontal members bridging between the first horizontal members 11. Since it includes the material 12, it is formed in a so-called ladder shape (or a grid shape) in plan view.
Here, the ladder refers to a ladder or something resembling a ladder.
Since the first horizontal member 11 and the second horizontal member 12 are formed in a ladder shape in this manner, they are formed as a structure having high rigidity and easily distributing the load.

The frame reinforcement structure 10 is provided on the first horizontal member 11, and has an upper extension set at a height from the upper end surface of the first horizontal member 11 to the lower surface of the roof 2, which is the upper structure. Prepare more. In other words, the upper extension supplements the height of the first horizontal member 11 so that the first horizontal member 11 can indirectly support the roof 2, which is the upper structure.
The upper extension part in this embodiment includes a plurality of attic wall panels 13 provided on the upper end surface of the first horizontal member 11 , and the upper end surface of the attic wall panel 13 provided on the upper end surface of the attic wall panel 13 and the lower surface of the roof 2 . and a plurality of roof panels 14 whose upper surfaces are inclined according to the angle of the roof.

Since the roof 2 is a shed roof with a downward slope from the south side to the north side, the height from the upper end surface of the first horizontal member 11 is set to be the highest on the south side and the lowest on the north side. Thus, the gap between the upper end surface of the first horizontal member 11 and the roof panel forming the roof 2 is formed in the shape of a right triangle.
A plurality of attic wall panels 13 provided on the upper end surface of the first horizontal member 11 are constituted by the wall panels WP described above, and are formed in a rectangular shape. Since such a rectangular attic wall panel 13 is arranged in the right-angled triangle gap, a plurality of attic wall panels 13 having different height dimensions are prepared.
The upper end portions of the plurality of attic wall panels 13 are positioned directly below the roof panels forming the roof 2, and the upper end faces are arranged horizontally. Therefore, a space in the shape of a right triangle is formed between the lower surface of the roof 2, which is a shed roof. A roof panel 14 is provided in the gap.

The plurality of roof panels 14 are substantially right-angled triangular adjustment members provided in a right-angled triangular gap between the upper end surface of the plurality of attic wall panels 13 and the lower surface of the roof panel constituting the roof 2. and blocks the gap.
In more detail, the roof panel that constitutes the roof 2 is provided with the stile members and the auxiliary rail members as described above, and the face member is not provided on the lower surface. The roof panel 14 is provided along the lower surface of the stile member or the auxiliary rail member among the roof panels that constitute the roof 2, and the upper end surface is provided in contact with the lower surface of the stile member and the auxiliary rail member. It's becoming In other words, both the attic wall panel 13 positioned below the roof panel 14 and the first horizontal member 11 positioned below the attic wall panel 13 are stile members of the roof panel that constitutes the roof 2. Alternatively, it is arranged below the auxiliary crosspiece.
Since the roof panel 14 is provided in contact with the roof panel constituting the roof 2, the roof 2 is supported by the first horizontal member 11 via the attic wall panel 13 and the roof panel 14. It will happen.
At the slope direction lower end of the roof 2 which is a shed roof, the distance between the upper end surface of the first horizontal member 11 and the lower surface of the roof panel constituting the roof 2 becomes narrower. In that case, the roof panel 14 is directly provided on the upper end surface of the first horizontal member 11 without using the attic wall panel 13 (see FIG. 5).

Of the set of two first horizontal members 11, one of the first horizontal members 11 (in the case of a set of three, one in the center) is affixed to both sides of the first horizontal member 11a. Both side surfaces of the attic wall panel 13 and both side surfaces of the roof panel 14 provided on one of the first horizontal members 11 are attached.
As described above, the roof panel 14 has its upper end surface in contact with the lower surface of the stile member or the auxiliary rail member among the roof panels constituting the roof 2. Since no opening is formed in the two first horizontal members 11, one of the first horizontal members 11, the attic wall panel 13 and the roof panel 14 provided thereon are , functions as an attic partition wall BW that separates the attic space 7 into one side and the other side. That is, the attic space 7 is divided into a plurality of areas in the east-west direction by the attic partition wall BW.
Here, the attic partition wall is defined by the Building Standard Law Enforcement Ordinance, and is provided to prevent flames from propagating and expanding in the attic. In this embodiment, the attic partition wall BW also serves the same purpose. In other words, the first horizontal member 11, the attic wall panel 13, and the roof panel 14, which constitute the attic bulkhead BW, are included in the frame reinforcing structure 10. In addition to reinforcing the frame of the building 1, the attic bulkhead BW is further provided to improve the fire resistance of the building 1. - 特許庁

The other first horizontal member 11 of the set of two first horizontal members 11 and the attic wall panel 13 and the roof panel 14 provided thereon do not function as the attic bulkhead BW. On the contrary, the other first horizontal member 11, the attic wall panel 13, and the roof panel 14 are walls with ventilation specifications that allow air to flow by communicating one side and the other side of the attic space 7. (hereinafter referred to as a ventilation specification wall VW).
The portion of the ventilation specification wall VW that allows ventilation is an arbitrary portion of the portion excluding the other first horizontal member 11 to which the fire prevention panel 11a is attached.

As shown in FIGS. 2(a) and 2(d), regarding the frame reinforcement structure 10 provided on the easternmost side of the attic space 7, since the distance to the outer wall 1a on the east side is short, the attic bulkhead BW is installed. shall not be prepared. In other words, the one and the other first horizontal members 11 in the frame reinforcement structure 10 provided on the easternmost side of the attic space 7, and the attic wall panel 13 and the roof panel respectively provided thereon. 14 both function as ventilation specification walls VW.

Also, of the pair of first horizontal members 11, the fire prevention panel 11a attached to both side surfaces of the other first horizontal member 11 is placed on top of the other first horizontal member 11. Both side surfaces of the provided attic wall panel 13 and both side surfaces of the roof panel 14 are not attached.

The roof beams 2a are provided so as to bridge between the adjacent attic partition walls BW and between the attic partition walls BW and the respective outer walls 1a on the east and west sides.
That is, since an opening is not formed in the fire prevention panel 11a, when constructing the roof beam 2a, the roof beam 2a is used for the attic bulkhead BW (one of the first horizontal members 11, the attic wall panel 13, It is not provided through the roof panel 14).
On the other hand, fire prevention panels 11a are attached to both side surfaces of the attic wall panel 13 and roof panel 14 provided on the other first horizontal member 11 of the ventilation specification wall VW. Therefore, the roof beam 2a is arranged to pass through the attic wall panel 13 and the roof panel 14 of the ventilation specification wall VW.
Roof panels that constitute the roof 2 are provided across a plurality of roof beams 2a and between the roof beams 2a and the outer walls 1a on the north and south sides.

On the second horizontal member 12, the upper extension part (the attic wall panel 13 and the roof panel 14) that is provided on the first horizontal member 11 is not provided, and the second horizontal member 12 is not provided. The upper end surface of 12 does not come into contact with the lower surface of the roof panel constituting the roof 2. - 特許庁Therefore, unlike the first horizontal member 11, the second horizontal member 12 does not bear the vertical load.

(First beam support hardware)
FIG. 6 shows the first beam bracket 15 when the roof beam 2a is attached to the attic bulkhead BW (one of the first horizontal members 11, the attic wall panel 13, and the roof panel 14) or the outer wall 1a. shows an example of
The roof beam 2a is made of H-shaped steel as described above, and as shown in FIG. Therefore, the roof beam 2a is arranged in a state of being inclined according to the inclination of the roof 2. - 特許庁

The first beam receiving hardware 15 is fixed to the attic bulkhead BW or the outer wall 1a via the reinforcing plate 1b. The reinforcing plate 1b is fixed to the attic partition wall BW or the outer wall 1a by screws or the like. When the reinforcing plate 1b is fixed to the attic bulkhead BW, it is fixed to the attic bulkhead BW via the fire prevention panel 11a.
Such a first beam receiving hardware 15 includes a positioning portion 15a that abuts on the upper surface of the reinforcing plate 1b, a mounting portion 15b that hangs down from the positioning portion 15a and abuts on the vertical surface of the reinforcing plate 1b, and a positioning portion from the mounting portion 15b. It has a beam receiving portion 15c formed to protrude vertically on the side opposite to the portion 15a.
The positioning portion 15a and the mounting portion 1b are fixed to the reinforcing plate 1b by fixing materials such as nails and screws.
A plurality of through holes 15d are formed in the beam receiving portion 15c, and nuts 15e are welded corresponding to the positions of the through holes 15d. A web of the roof beam 2a made of H-shaped steel is bolted to the beam receiving portion 15c. That is, the web of the roof beam 2a is also formed with through holes corresponding to the through holes 15d of the beam receiving portion 15c, and bolts can be inserted through these through holes and fixed to the nuts 15e.
The roof beams 2a are bridged between the adjacent attic partition walls BW and between the attic partition walls BW and the outer walls 1a on the east and west sides of the attic partition walls BW, respectively, via the first beam brackets 15 as described above. ing.

(Installation of the first horizontal member)
FIG. 7 shows an example of attaching the first horizontal member 11 to the outer wall 1a.
As shown in FIG. 7, the north-side outer wall 1a and the south-side outer wall 1a are formed by arranging a plurality of wall panels WP along the same direction, and are bridged between the north-side and south-side outer walls 1a. At the position where the first horizontal member 11 is provided, a dimension adjusting member AM and a half-split receiving member HM (also referred to as a mullion) are provided.

The dimension adjustment member AM is set to have the same height as the wall panel WP and the same width as the beam width of the first horizontal member 11 .
The half-split support member HM is set lower in height than the dimension adjustment member AM, and is set to have a width equal to the beam width of the first horizontal member 11 .
The dimension adjusting member AM and the half receiving member HM are integrally joined to form a columnar shape, and the first horizontal member 11 is placed on the upper end face of the half receiving member HM. That is, on the outer wall 1a on the north side and the south side, half-split support members HM are provided in alignment with the positions of both ends in the longitudinal direction of the first horizontal member 11. Both longitudinal ends of the bridge member 11 are supported from below. As a result, the first horizontal member 11 that bears the vertical load can be reliably and stably supported by the receiving member 51 .
The first horizontal member 11 is fixed to the wall panel WP and the dimension adjustment member AM by fixing members such as screws driven obliquely from the wall panel WP side. An adhesive may also be used for fixing the first horizontal member 11 .

(Installation of second horizontal member)
FIG. 8 shows an example of attaching the second horizontal member 12 to the first horizontal member 11 .
A second beam receiving hardware 16 is fixed to the side surface of the first horizontal member 11 via a reinforcing plate 1b. Then, the second horizontal member 12 is in a state of being received by the second beam receiving hardware 16 .

The second beam receiving hardware 16 includes a positioning portion 16a that abuts on the upper surface of the reinforcing plate 1b, a mounting portion 16b that hangs down from the positioning portion 16a and abuts on the vertical surface of the reinforcing plate 1b, and an upward U-shape from the mounting portion 16b. and a beam receiving portion 16c that protrudes and extends in a shape, and is fixed by fixing materials such as nails and screws.
Both longitudinal ends of the second horizontal member 12 are attached to the first horizontal member 11 via the second beam receiving hardware 16 as described above. That is, the second horizontal member 12 is bridged between the pair of first horizontal members 11 via the second beam receiving hardware 16 .

The reinforcing plate 1b in this embodiment is formed long along the length direction of the first horizontal member 11, and both ends in the length direction correspond to both ends in the length direction of the first horizontal member 11. reach the department.
Further, in FIG. 8, the upper end surface of the first horizontal member 11 and the upper end surface of the second horizontal member 12 are substantially at the same height, but the present invention is not limited to this, and the first horizontal member The upper end surface of 11 may be located above the upper end surface of the second horizontal member 12 .

(Attic insulation structure)
In the attic space 7, as shown in FIGS. 3 to 5 and the like, an attic insulation structure positioned above the ceiling 6 is provided.
The attic insulation structure includes a heat insulator 20 and a support structure that supports the heat insulator 20. - 特許庁
In this embodiment, the heat insulating structure in the attic space 7 below the roof 2 will be described, but the structure is not limited to this. If provided, it may be a heat insulating structure provided in the space above the ceiling 6 in the indoor space 5 on the lower floor.

A rock wool mat, for example, is used as the heat insulating material 20 . Although the thickness of the heat insulating material 20 used is set to 200 mm in this embodiment, it is not limited to this, and can be appropriately changed according to the heat insulating performance desired to be imparted to the attic space 7 .
In addition, the heat insulating material filled in the inner hollow portion of the wall panel WP constituting the outer wall 1a and the heat insulating material filled in the inner hollow portion of the roof panel constituting the roof 2 also contribute to heat insulation of the attic space 7. .

The support structure for supporting the heat insulating material 20 includes a plurality of hangers 21 attached to the sides of the stile members and auxiliary crosspieces of the roof panel that constitute the roof 2 and hanging down, and a plurality of hangers 21 provided at the lower ends of the hangers 21. a joist receiver 22, a plurality of joists 23 fixed to the lower surface of the joist receiver 22, and a plurality of face materials 25 attached to the lower surface of the plurality of joist ties 23 via a moisture-proof sheet 24. .

Since the plurality of hangers 21 are attached to the sides of the stile members and the auxiliary crosspieces of the roof panel and hang down, the lengths of the hangers 21 differ according to the locations where they are attached.
The joist receivers 22 are fixed across the lower end side surfaces of the plurality of hanging trees 21 .
The plurality of joists 23 are arranged vertically and horizontally to form a frame shape. Among the plurality of joists 23 , the joists 23 arranged adjacent to the first horizontal member 11 are fixed to the first horizontal member 11 . A joist 23 arranged adjacent to the outer wall 1a is fixed with respect to the outer wall 1a. The fixed position is above the lower end of the first horizontal member 11 , and accordingly the mounting position of the face member 25 is also above the lower end of the first horizontal member 11 . On the other hand, the second horizontal member 12 is positioned above the face member 25 .
The face material 25 is made of plasterboard or reinforced plasterboard, and has functions such as fireproof performance, enhanced fireproofness, earthquake resistance, moisture absorption, and antifungal properties. The plurality of face members 25 are arranged at a height position above the lower end portion (ceiling support structure described later) of the first horizontal member 11 by the plurality of hangers 21 and the like. Furthermore, the plurality of face members 25 are bridged between the first horizontal members 11 in the frame reinforcing structure 10, between the adjacent frame reinforcing structures 10, and between the frame reinforcing structure 10 and the outer wall 1a. The attic space 7 is divided into upper and lower parts with the panel 25 as a boundary.

The heat insulating material 20 is laid on the upper surface of the face material 25 suspended from the roof panel constituting the roof 2 by a hanging tree 21 or the like. The end of the heat insulating material 20 on the side of the outer wall 1a is in contact with the outer wall 1a, and the end on the side of the first horizontal member 11 is in contact with the first horizontal member 11 to which the fire prevention panel 11a is attached. . That is, the heat insulating material 20 is spread over the upper surfaces of the plurality of face members 25 . As a result, in the attic space 7, an insulation line/refractory line including the facing material 25 and the heat insulating material 2 is formed above the facing material 25, and heat and heat in the vertical direction of the building 1 are formed. Helps prevent flame transmission.
Furthermore, as described above, since the heat insulating material of the outer wall 1a and the heat insulating material of the roof 2 also contribute to the heat insulation of the attic space 7, the air layer between these heat insulating materials and the heat insulating material 20 spread is It will have a heat insulating effect.

(ceiling support structure)
As shown in FIGS. 3 to 5 and the like, the attic space 7 is provided with a ceiling support structure that suspends and supports the ceiling 6 .
In this embodiment, the ceiling support structure in the attic space 7 below the roof 2 will be described, but the structure is not limited to this. When installed in the lower floor indoor space 5, the ceiling support structure may be provided in the ceiling space above the ceiling 6.
Such a ceiling support structure includes a plurality of steel suspension beams 30, a plurality of wooden suspension beams 31, a plurality of suspension bolts 32, a plurality of ceiling joist receivers 33, and a plurality of ceiling joists 34.

The steel suspension beams 30 are H-shaped steel provided between adjacent frame reinforcing structures 10 and between the frame reinforcing structure 10 and the respective outer walls 1a on the east and west sides.
The mounting position of the steel suspension beam 30 with respect to the frame reinforcement structure 10 is below the face material 25 in the attic heat insulation structure, and is attached to the side surface at the lower end of the first horizontal member 11 via the fire prevention face material 11a. installed. It should be noted that the attachment of the steel suspension beam 30 to the first horizontal member 11 is performed using the first beam receiving hardware 15 shown in FIG. That is, a reinforcing plate 1b is provided on the side surface of the lower end portion of the first horizontal member 11 with the fire prevention panel 11a interposed therebetween, and the first beam receiving hardware 15 is provided on the reinforcing plate 1b. .

The wooden hanging beams 31 are provided so as to span between the pair of first horizontal members 11 in each frame reinforcing structure 10 .
The mounting position of the wooden suspension beam 31 with respect to the frame reinforcement structure 10 is below the facing material 25 (that is, below the second horizontal member 12) in the above attic insulation structure, and is below the first horizontal member 11. It is attached to the side surface at the lower end through the fire prevention panel 11a. For attaching the wooden suspension beam 31 to the first horizontal member 11, the second beam receiving hardware 16 of FIG. 8 may be used, or other beam receiving hardware described later may be used (FIGS. See Figure 13).

The suspension bolts 32 are provided on the lower flange for the steel suspension beams 30 made of H-shaped steel, and on the side surfaces for the wooden suspension beams 31. The positions of the lower ends of the suspension bolts 32 are in good condition.

A steel joist receiver 33 is bridged and fixed to the lower ends of the plurality of hanging bolts 32 . Furthermore, the plurality of joists 34 are provided at the lower ends of the plurality of joist receivers 33 .
A ceiling 6 is provided on the lower surfaces of the plurality of joists 34. - 特許庁That is, the ceiling 6 is supported by each frame reinforcing structure 10 (each first horizontal member 11) and the outer wall 1a.
The ceiling 6 is provided with plasterboard (reinforced plasterboard may be used) as a ceiling substrate and noncombustible (or quasi-noncombustible) vinyl cloth as a ceiling finishing material. That is, a ceiling substrate made of plasterboard is fixed to and supported by the lower surface of a plurality of ceiling joists 34, and a noncombustible vinyl cloth as a ceiling finishing material is adhered to the lower surface of the ceiling substrate to constitute the ceiling 6. - 特許庁
The ceiling 6 may be a plasterboard or a reinforced plasterboard with its surface painted, or may be a decorative gypsum board for interior use.

Openings for the air conditioners 35 and 36 are appropriately formed in the ceiling 6 , and the air conditioners 35 and 36 are installed so that their lower ends are exposed to the indoor space 5 .
As shown in FIG. 5, the air conditioner 36 is suspended by suspension bolts 37a that are suspended from suspension beams 37 for the air conditioner 36 that are spanned between a plurality of steel suspension beams 30 in the ceiling support structure. supported downwards.

(Attic ventilation structure)
Since the building 1 in this embodiment is long in the east-west direction as described above, even if ventilation openings are provided at one end and the other end in the east-west direction, the distance between the ventilation openings is long. , it is difficult to generate air flow, and it is difficult to improve ventilation efficiency (ventilation volume). Further, the attic space 7 is divided into a plurality of areas by the attic partition wall BW as described above. Since the ventilation specification wall VW is configured to allow air circulation as described above, the attic space 7 is not divided into a plurality of areas from the viewpoint of attic ventilation.
Based on the above, in this embodiment, an attic ventilation structure for ventilating the attic space 7 is provided for each of a plurality of areas divided by the attic partition wall BW.
Such an attic ventilation structure includes a ventilation recess 40, a ventilation opening 41, and a ventilation gable 42, as shown in FIGS.

As shown in FIG. 2( c ), the ventilation recess 40 is a recessed (stepped) space facing the indoor space 5 , and is integrally formed continuously with the attic space 7 . In addition, this ventilation recess 40 is located between the first horizontal members 11 in each frame reinforcing structure 10 and faces the north side outer wall 1 a of the building 1 .

The ventilation recess 40 has a side wall portion 40a facing the indoor space 5 and a lower surface portion 40b.
The side wall portions 40 a are provided on three sides (south side, east side, and west side) of a portion of the ventilation recess 40 located below the ceiling 6 . The south side wall portion 40 a is provided adjacent to the side edge portion of the ceiling 6 . The east side and west side wall portions 40a are provided at the lower end portions of the first horizontal members 11 in each frame reinforcing structure 10 .
The lower surface portion 40b functions as a ceiling in the indoor space 5, and is provided so as to bridge between the side wall portions 40a on three sides and the outer wall 1a on the north side. That is, the lower end of the ventilation recess 40 is closed.
Further, the heat insulating material 20 described above is continuously provided in the ventilation concave portion 40 .

The ventilation opening 41 is a ventilation opening formed in a portion of the outer wall 1 a of the building 1 facing the ventilation recess 40 . That is, the ventilation opening 41 is formed in the outer wall 1a on the north side of the building 1, and communicates the ventilation recess 40 with the outdoor space.
The ventilation opening 41 is formed from the lower end to the upper end of the portion of the outer wall 1a facing the ventilation recess 40 and from the east end to the west end of the portion. In particular, the lower end of the ventilation opening 41 is positioned below the ceiling 6 . In other words, the ventilation opening 41 is formed so as to occupy a wide portion of the outer wall 1a facing the ventilation recess 40 . Therefore, the amount of air that can be taken into the attic space 7 increases.
Further, the ventilation opening 41 is provided with a ventilation louver 41a, and the ventilation opening 41 is closed by the ventilation louver 41a so as to allow air to flow therethrough.
Furthermore, the ventilation opening 41 and the ventilation louver 41a are located directly under the eaves at the lower end of the slope direction of the roof 2, which is a shed roof.

The ventilation gable 42 is a steel gable provided at the upper end in the slope direction of the roof 2, which is a shed roof. part is covered. That is, the ventilation gables 42 are located above the ventilation openings 41 .
A ventilation hole (not shown) is formed in the ventilation gable 42 to communicate the attic space 7 and the outdoor space. In other words, the ventilation gable 42 is a ventilation covering material that covers a portion of the roof 2 and allows air to flow through the ventilation holes.

As an aid to such an attic ventilation structure, a plurality of ventilation holes are formed in the outer wall 1a on the south side of the building 1 to communicate the attic space 7 and the outdoor space. A ventilation hood 43 is provided on the outer wall 1a on the south side to block the plurality of ventilation holes in a state in which air can flow.
Furthermore, the eaves and the east and west side ends of the roof 2 are also provided with ventilation cover materials (not shown) similar to the ventilation gables 42, so that the attic space 7 and the outdoor space can be communicated. .

In the attic ventilation structure of this embodiment, the attic space 7 is divided into a plurality of areas by a plurality of attic partition walls BW, and attic ventilation can be performed for each of the plurality of areas.
Considering the nature that warm air rises in the air flow in the attic ventilation structure, in most cases the ventilation holes formed in the ventilation gables 42 are used as the exhaust ports. Outside air is taken in from ventilation holes in 41 and the ventilation cover material (not shown). However, it is not limited to this, and outside air may be taken in through ventilation holes formed in the ventilation gables 42 and exhausted from other locations. In addition, in order to increase ventilation efficiency (ventilation amount), the attic ventilation structure may be provided with a device such as a ventilation fan (fan).

(Rules, etc. Pertaining to Building Design)
A building provided with the frame reinforcing structure 10 is a one-story building like the building 1 described above, or a two-story or three-story building. The frame reinforcement structure 10 (first horizontal member 11, second horizontal member 12) is applied to the top floor even if the building is multi-story, and bears the roof load and the attic wall load.
However, it is not limited to this, and the skeleton reinforcement structure 10 may be provided between upper and lower floors in a multi-story building. That is, the attic space 7 in the above description may be replaced with the attic space above the ceiling of the lower floor.
In addition, when the floor of the upper floor is provided in applying the frame reinforcement structure 10 between the upper and lower floors of the building, the floor beams are placed between the adjacent frame reinforcement structures 10 and the outer walls 1a of the frame reinforcement structure 10 and the east and west of each. , and a floor is provided on the floor beams and the frame reinforcing structure 10. - 特許庁More specifically, the floor panel that constitutes the floor is provided between a plurality of floor beams or between the floor beams and the outer walls 1a on the north and south sides.

Also, the first horizontal member 11 is arranged on the bearing wall line L1 or the supporting wall line L2, as shown in FIG. In addition, the support wall line L2 is also called a support wall line.
For example, only one first horizontal member 11 is used to prevent buckling when the first horizontal member 11 is lengthened and spanned between load-bearing walls (north-south outer walls 1a). are arranged at intervals S1 from each other. Further, a plurality of second horizontal members 12 are provided so as to bridge between the plurality of first horizontal members 11 . The plurality of second horizontal members 12 are arranged with an interval S2 from each other.
The interval S1 between the first horizontal members 11 is determined based on the standard dimensions (modules) when designing the building, and is set to 1 to 2 modules in this embodiment.
The interval S2 between the second horizontal members 12 is appropriately changed according to the length of the first horizontal member 11 as described above.
Although the reference dimension (module) is set to 910 mm in this embodiment, it is not limited to this, and may be, for example, 1000 mm or other dimensions.

The attic wall panel 13 and the roof panel 14 are provided on the upper surface of the first horizontal member 11, and since the roof panel 14 is in contact with the roof panel constituting the roof 2, the first horizontal member 11 bears a vertical load. As described above, the horizontal member 12 has a beam height smaller than that of the first horizontal member 11, and thus does not bear the vertical load.

Normally, if the distance between load-bearing wall lines is increased, a large area cannot be secured unless walls and pillars are provided in the indoor space 5, but by providing the frame reinforcement structure 10, it is possible to take this into consideration when designing. Therefore, a large area of the indoor space 5 can be secured.
However, when introducing the frame reinforcement structure 10, it is not completely excluded that the walls and columns are provided in the indoor space 5. Walls or columns supporting 11 may be provided.

In FIG. 10, load-bearing walls 50 (or support walls) are arranged on both ends in the length direction of the first horizontal member 11 , and support members 51 are arranged and fixed along these load-bearing walls 50 . support both longitudinal ends of the first horizontal member 11 from below. As a result, the first horizontal member 11 that bears the vertical load can be reliably and stably supported by the receiving member 51 .
Reference numeral 52a denotes a half size adjusting material 52a that is required when the building is designed based on the above standard size, and adjusts the width of the load-bearing wall 50. As shown in FIG. Moreover, the load-bearing wall 50 is composed of the wall panel WP described above.

FIG. 11 illustrates an example in which one side of the bearing wall 50 (or supporting wall) receives the first horizontal members 11 from two directions. That is, the first horizontal members 11 are arranged in two parallel directions (directions in which the two first horizontal members 11 extend in opposite directions in plan view, with the intersection of the load-bearing wall 50 and the two first horizontal members 11 as the base point). It refers to an example of arranging or arranging in two orthogonal directions.
In such an example, receiving the first horizontal member 11 from two directions may cause misalignment. Therefore, separately from the receiving material 51 which is a regular square material, a halved receiving material 51a which is a halved material, and separately from a halved dimension adjusting material 52a which is a halved material, a dimension adjusting material 52 which is a regular square material is appropriately used. Used in combination.

In FIGS. 11(a) and 11(d), the number of halved members such as the halved receiving member 51a and the halved dimension adjusting member 52a is equivalent to five pieces. In FIGS. 11(b) and 11(e), the number of halves is equivalent to six. In FIGS. 11(c) and 11(f), the halves are equivalent to 7 pieces.
In short, the first horizontal member 11 in this embodiment is attached to the outer wall 1a by using the dimension adjusting member AM which is a half member and the half receiving member HM as described above. . That is, in the example of FIG. 7, when converted into halves, it is equivalent to two pieces, but for example, when the outer wall 1a receives the first horizontal member 11 from two directions, misalignment occurs as described above. Therefore, as shown in FIG. 11, the first horizontal member 11 is supported by appropriately combining regular timbers and half timbers.

(Effect of this embodiment)
According to the present embodiment, a plurality of single wires are installed across the opposing load-bearing walls (outer walls) 1a of the building frame and support the upper structure (for example, the roof 2) provided on the load-bearing walls 1a. A set of first horizontal members 11 and a second horizontal member provided to bridge between a set of a plurality of first horizontal members 11 and connecting a set of the plurality of first horizontal members 11 to each other. Since the material 12 is provided, the skeleton reinforcing structure 10 is formed in a so-called ladder shape in plan view. That is, the frame reinforcement structure 10 is formed as a structure having high rigidity and easily distributing the load. Then, if such a frame reinforcement structure 10 is introduced into the building 1, even if the load-bearing walls exposed in the indoor space 5 of the building 1 are reduced as much as possible, functions such as supporting the roof 2 and resisting external force will be impaired. A user-friendly large space (indoor space 5) can be secured.

In addition, an upper extension portion (attic wall panel 13, roof Since the panel 14) is further provided, the upper structure can be reliably and stably supported by the set of the first horizontal members 11 .

In addition, the ceiling heat insulation structure provided in the ceiling space is provided above the lower end of the set of plural first horizontal members 11, and is provided with a surface material 25 that vertically partitions the ceiling space. Since the heat insulating material 20 laid on the upper surface of the material 25 is provided, it becomes easy to prevent heat transfer in the vertical direction of the building 1 with the face material 25 as a boundary. In addition, if the face material 25 has fire resistance, it becomes easier to prevent flame transmission in the vertical direction of the building 1 with the face material 25 as a boundary.

In addition, the ceiling support structure provided in the ceiling space includes a plurality of suspension beams 30 and 31 provided at the lower end of the first horizontal member 11 in the frame reinforcement structure 10 and attached to the plurality of suspension beams 30 and 31. The ceiling 6 is suspended and supported by the plurality of hanging members 32 (33, 34). , can be supported by the first horizontal member 11 in the frame reinforcement structure 10. As a result, the frame reinforcing structure 10 can be used not only to reinforce the frame of the building 1 but also to support the ceiling 6 .

The attic space is an attic space 7 below the roof 2, and one first horizontal member 11 out of a set of plural first horizontal members 11 is Since the attic partition wall BW is covered to separate the attic space 7 from one side to the other, it is possible to prevent flames from propagating through the attic space 7 and expanding in accordance with the Building Standard Law Enforcement Ordinance. can be prevented. The frame reinforcement structure 10 not only reinforces the frame of the building 1 but also improves the fire resistance of the building 1 .

The attic space is an attic space 7 below the roof 2, and the attic space 7 is provided with a plurality of frame reinforcement structures 10 and an attic ventilation structure. The structure consists of ventilation openings 41 formed in the load-bearing walls 1a at positions between the first horizontal members 11 in each frame reinforcing structure 10, and ventilation openings 41 in the roof 2 above the ventilation openings 41. The attic space 7 is divided into a plurality of areas by a plurality of frame reinforcement structures 10. The attic can be ventilated for each of a plurality of areas by dividing and using the ventilation opening 41 and the ventilation cover material. As a result, even when it is difficult to improve the ventilation efficiency because the attic space 7 is wide or long on one side, the ventilation efficiency can be improved by performing ventilation for each of a plurality of areas.

In addition, the attic ventilation structure is arranged facing the part of the load-bearing wall 1a in which the ventilation opening 41 is formed, and is integrally formed continuously with the attic space 7 so that the indoor space 5 is closer than the ceiling 6. A ventilation recess 40 formed in a recessed shape is further provided, and since the lower end of the ventilation opening 41 is located below the ceiling 6, the ventilation opening 41 The opening area of can be widened. As a result, the amount of air that can be taken into the attic space 7 can be increased, so ventilation efficiency can be improved.
In addition, considering the property that warmed air rises, it is possible to take in air from below the ceiling 6 and form an upward air flow, which makes it easy to improve the ventilation efficiency.

[Modification]
It should be noted that the embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be changed as appropriate without departing from the gist of the present invention. Modifications will be described below. The modifications listed below may be combined as much as possible. Further, in each of the modifications below, elements common to those of the above-described embodiment are denoted by common reference numerals, and explanations thereof are omitted or simplified.

[Modification 1]
FIG. 12 shows a modification in which the first horizontal member 11 is attached to the outer wall 1a or the second horizontal member 12 is attached to the first horizontal member 11. As shown in FIG.
Although the case where the first horizontal member 11 is attached to the outer wall 1a will be described here, the second horizontal member 12 can also be attached to the first horizontal member 11 in the same manner.

A third beam receiving hardware 66 is fixed to the side surface of the outer wall 1a on the attic space 7 side via a reinforcing plate 61b screwed to the outer wall 1a. Then, the first horizontal member 11 is in a state of being received by the third beam receiving hardware 66 .
The third beam receiving hardware 66 includes a positioning portion 66a that abuts on the upper surface of the reinforcing plate 61b, a mounting portion 66b that hangs down from the positioning portion 66a and abuts on the vertical surface of the reinforcing plate 61b, and a U-shaped portion extending upward from the mounting portion 66b. and a beam receiving portion 66c that protrudes and extends in a shape, and is fixed by a fixing member 66d such as a nail or a screw.
The reinforcing plate 61b is formed long along the width direction of the outer wall 1a (the length direction of the first horizontal member 11), and is so long as to reach both ends of the outer wall 1a in the width direction. is not set.

The first horizontal member 11 is attached to the outer wall 1a via the third beam receiving hardware 66 as described above. The second horizontal member 12 can also be attached to the first horizontal member 11 via such third beam receiving hardware 66 .

[Modification 2]
FIG. 13 shows another example of attaching the first horizontal member 11 to the outer wall 1 a or attaching the second horizontal member 12 to the first horizontal member 11 .
Here, the case where the second horizontal member 12 is attached to the first horizontal member 11 will be described, but the first horizontal member 11 can also be attached to the outer wall 1a in the same manner.

A fourth beam receiving hardware 77 for receiving the second horizontal member 12 is fixed to the side surface of the first horizontal member 11 . This fourth beam support metal fitting 77 is formed in a substantially U-shape in a plan view, and a plurality of holes 77a are formed in both pieces thereof so as to be vertically spaced apart from each other. 77b are formed. Further, a plurality of holes 77c are vertically spaced apart from each other in the intermediate piece portion between the both piece portions of the fourth beam receiving hardware 77. As shown in FIG.
The middle piece of the fourth beam receiving hardware 77 abuts against the side surface of the first horizontal member 11, and the bolt is inserted through the hole 77c and then through the hole formed in the first horizontal member 11. , is fixed to the side surface of the first horizontal member 11 by screwing and tightening the nut.

Engagement portions 78 are formed at both ends of the second horizontal member 12 in the longitudinal direction to engage with both opposing pieces of the fourth beam receiving hardware 77 . The engaging portion 78 is composed of two slits 78a formed apart from the end face of the second horizontal member 12 in the thickness direction of the second horizontal member 12, and two slits 78a formed between the slits 78a. The solid portion 78b is recessed from the end surface of the second horizontal member 12 by the head portion of the bolt that fixes the fourth beam receiving hardware 77. there is
Furthermore, it is assumed that holes 78c are formed on the side surface of the end portion of the second horizontal member 12 so as to be spaced apart vertically, and holes that are coaxial with the holes 78c are formed in the solid portion 78b.

The second horizontal member 12 is attached to the first horizontal member 11 by engaging the engagement portion 78 with the fourth beam receiving hardware 77 fixed to the side surface of the first horizontal member 11. there is
That is, both pieces of the fourth beam receiving hardware 77 are inserted into the slits 1a of the second horizontal member 12, and the solid portions 78b of the second horizontal member 12 are inserted into both pieces of the fourth beam receiving hardware 77. After inserting the drift pin through the hole 78c of the second horizontal member 12, the hole 77a and the groove 77b of the fourth beam receiving metal fitting 77, and the hole of the solid portion 78b, the first horizontal member A second horizontal member 12 is connected to 11 .

The first beam receiving hardware 15 is used when the object to be attached is made of steel (shaped steel) like the roof beam 2a.
The second beam receiving hardware 16 and the fourth beam receiving hardware 77 are used when the object to be attached is made of wood like the first horizontal member 11 and the second horizontal member 12. In this embodiment, Either type of the second beam receiving hardware 16 and the fourth beam receiving hardware 77 may be used.
Furthermore, the first horizontal member 11 and the second horizontal member 12 are connected without using hardware such as the second beam receiving hardware 16 and the fourth beam receiving hardware 77. The horizontal members 12 may be connected by timberwork.

1 Building 1a Exterior wall (bearing wall)
2 Roof 2a Roof beam 5 Indoor space 6 Ceiling 7 Attic space 10 Frame reinforcement structure 11 First horizontal member 11a Fire prevention panel 12 Second horizontal member 13 Attic wall panel (upper extension)
14 roof panel (upper extension)
15 First beam receiving hardware 16 Second beam receiving hardware 20 Heat insulating material 25 Face material 30 Steel hanging beam 31 Wooden hanging beam 32 Hanging bolt 40 Ventilation recess 41 Ventilation opening 41a Ventilation louver 42 Ventilation gable BW Attic bulkhead VW Ventilation Specification wall L1 Load-bearing wall line L2 Supporting wall line S1 Interval of first horizontal member S2 Interval of second horizontal member

Claims (5)

A building in which a frame reinforcement structure that reinforces the frame of the building is provided in the space above the ceiling of the indoor space,
The frame reinforcement structure is
a set of a plurality of first horizontal members that are provided to bridge between the load-bearing walls facing each other in the frame and that support an upper structure provided on the load-bearing walls;
a second horizontal member provided to bridge between the set of the plurality of first horizontal members and connecting the set of the plurality of first horizontal members;
A ceiling insulation structure is provided in the ceiling space,
The attic insulation structure includes:
a surface member provided above the lower end portion of the set of the plurality of first horizontal members and partitioning the space above and below the ceiling;
and a heat insulating material laid on the upper surface of the face material. In the building according to claim 1,
A ceiling support structure for supporting the ceiling is provided in the ceiling space,
The ceiling support structure includes:
a plurality of suspension beams provided at the lower end of the first horizontal member in the frame reinforcement structure;
a plurality of suspension members attached to the plurality of suspension beams and arranged to hang down;
The building, wherein the ceiling is suspended and supported by the plurality of hanging members. In the building according to claim 1 or 2,
The attic space is an attic space below the roof,
One first horizontal member of the set of the plurality of first horizontal members has a surface covered with a fireproof panel and forms an attic partition wall that separates the attic space into one side and the other side. A building characterized by comprising: In the building according to any one of claims 1 to 3,
The attic space is an attic space below the roof,
The attic space is provided with a plurality of the frame reinforcement structures and an attic ventilation structure,
The attic ventilation structure is
a ventilation opening formed in a portion of the load-bearing wall located between the first horizontal members of each of the frame reinforcing structures;
and a ventilation cover material formed to allow air to flow while covering a predetermined portion of the roof located above the ventilation opening. In the building according to claim 4,
The attic ventilation structure is
It is arranged facing the part of the load-bearing wall in which the ventilation opening is formed, is integrally formed continuously with the attic space, and is formed in a shape recessed toward the indoor space from the ceiling. It further comprises a ventilation recess,
A building according to claim 1, wherein the ventilation opening has a lower end located below the ceiling.

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