JP6936602B2 - building - Google Patents

Description

The present invention relates to a building, and more particularly to a building having stairs indoors.

Conventionally, buildings such as houses having stairs indoors have been known. For example, Patent Document 1 discloses a building having a turn-back staircase having a landing inside. When such a staircase is installed, the middle part of the stairs such as the landing is not connected to the floor or the beam on the upper floor or the lower floor, so a method of separately providing a pillar to support the middle part has been proposed. There is.

By the way, in a building having a plurality of dwelling units such as an apartment house or a two-family house, a wall separating two adjacent dwelling units or a building having an indoor common area such as an indoor corridor or an indoor staircase is shared indoors with the dwelling unit. The walls that partition the sections are required to have predetermined fire resistance.

Japanese Unexamined Patent Publication No. 2010-13925

Then, when a pillar is to be installed inside a partition wall having such a predetermined fire resistance, a part of the face material on the stairs side of the partition wall (bolts, screws, metal joints, etc. for fixing the stairs to the pillar, etc.) (Part of the fixed part) must be damaged, and there is a risk that the fire resistance performance will be impaired.

Therefore, when an indoor staircase is provided along such a partition wall, a pillar supporting the middle part of the indoor staircase must be erected while avoiding the partition wall so as not to impair the fire resistance performance. There is a problem that effective utilization is hindered. In addition, in some cases, the pillars must be exposed to the internal space side, which causes a problem of spoiling the aesthetic appearance.

Therefore, according to the present invention, even when an indoor staircase is provided along the partition wall, the space can be effectively utilized without impairing the fire resistance performance of the partition wall or impairing the aesthetic appearance. The purpose is to provide a building with.

The present invention has been made to solve the above problems, and the building of the present invention has a partition wall that divides an internal space surrounded by an outer peripheral wall into a first space and a second space, and the second space. A building equipped with stairs installed along the partition wall in the space.
The partition wall includes a first wall material, a first base material to which the first face material is attached, and a first wall portion having a predetermined fire resistance.
A second face material arranged to face the second space side with respect to the first face material, and a second wall portion having a second base material to which the second face material is attached are provided.
It is characterized in that a staircase support pillar for supporting the stairs is provided between the first wall portion and the second wall portion.

In the building of the present invention, the staircase support pillars are arranged so as not to overlap the first base material and the second base material when viewed from the second space side. preferable.

Further, in the building of the present invention, a plurality of the first base materials are erected along the first face material at predetermined intervals.
A plurality of the second base materials are erected along the second face material at predetermined intervals.
It is preferable that the first base material and the second base material are arranged so as not to overlap each other when viewed from the second space side.

Further, in the building of the present invention, it is preferable that a sound insulating material is arranged between the first wall portion and the staircase support pillar inside the partition wall.

Further, in the building of the present invention, it is preferable that the staircase support columns are arranged closer to the second surface material than the thickness center of the partition wall.

Further, in the building of the present invention, a bracket projecting toward the second space side from the second face material is provided in the middle portion of the staircase support pillar, and the staircase passes through the bracket. It is preferable that the stairs are supported by the staircase support columns.

Further, in the building of the present invention, it is preferable that the edge portion of the step plate member of the stairs on the partition wall side is suppressed from above by the vibration suppressing means attached to the partition wall.

According to the present invention, even when an indoor staircase is provided along the partition wall, the space can be effectively utilized without impairing the fire resistance performance or the aesthetic appearance of the partition wall. Can provide a building to own.

It is a top view which partially shows the building of one Embodiment of this invention. It is an enlarged cross-sectional view of the partition wall shown in FIG. It is a perspective view which shows the structure of the stairs in FIG. FIG. 3 is a partially enlarged view of a structure or the like in FIG. 3 in a side view. It is a partially enlarged view of the stairs in FIG. 1 from the side view. It is an enlarged sectional view in the width direction of the lower staircase part or the upper staircase part. It is a front view of the lower staircase part of the stairs shown in FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The same reference numerals are given to the common configurations in each figure. The building (apartment house 1) described below has a plurality of floors, but for convenience of explanation, the first floor will be exemplified as a representative unless otherwise specified.

FIG. 1 is a plan view partially showing an apartment house 1 as a building according to an embodiment of the present invention. As shown in FIG. 1, the apartment house 1 has an outer peripheral wall 2 that separates the internal space and the outdoor space. The outer peripheral wall 2 has, for example, an external finishing layer formed by continuously providing an exterior panel material made of lightweight cellular concrete (ALC) having a coating film formed as a waterproof layer on the surface side, and for example, phenol foam or the like. It is composed of a heat insulating layer formed by continuously installing the foamed resin-based heat insulating panel material along the inner surface of the exterior finishing layer, and a finishing material such as a gypsum boat and a wall cloth attached to the surface of the gypsum board. It may be provided with an internal finishing layer, but is not particularly limited. The outer peripheral wall 2 may have at least fire resistance and waterproof performance capable of forming a predetermined fire protection section.

The internal space surrounded by the outer peripheral wall 2 includes a dwelling unit portion 3 (first space) and an indoor common portion 4 (second space). The dwelling unit portion 3 and the indoor common portion 4 are partitioned by a partition wall 5. A plurality of dwelling units 3a and 3b are partitioned in the dwelling unit portion 3 by a boundary wall 6.

The indoor common area 4 is provided with stairs 42 arranged along the partition wall 5 and connecting the common corridor 41 and the common corridor on the upper floor. The stairs 42 are folded stairs, and connect the landing section 42a (folded section), the linear lower staircase section 42b that connects the landing section 42a and the floor on the lower floor, and the landing section 42a and the floor on the upper floor. It is provided with a linear upper staircase portion 42c.

The partition wall 5 is formed with an opening 7 that serves as an entrance / exit to each of the dwelling units 3a and 3b, and the opening 7 is provided with a dwelling unit entrance door 8.

An opening 43 for communicating the indoor common portion 4 and the external space is formed on the outer peripheral wall 2 facing the common corridor 41 on the first floor, and the common entrance door 44 is provided in the opening 43. The upper part of the uppermost floor of the indoor common area 4 is covered with a roof, whereby the indoor common area 4 on all floors is separated from the external space. The indoor common area 4 may be further provided with a mechanical elevating means such as an elevator, or may be provided with a stairwell.

As shown enlarged in FIG. 2, the partition wall 5 includes a first wall portion 51 provided on the dwelling unit portion 3 side and a second wall portion 52 provided on the indoor common portion 4 side.

The first wall portion 51 is made of a first base material 51a made of a columnar light iron stud material having a substantially U-shaped cross section or a substantially square cross section and erected at predetermined intervals, and two layers of reinforced gypsum board. A first surface material 51b attached to the first base material 51a by a fixture such as a screw is provided.

The lower end and the upper end of the first base material 51a are positioned and connected to each other by the lower runner material fixed to the floor surface and the upper runner material fixed to the beam or the floor slab on the upper floor. The reinforced gypsum board constituting the first face material 51b is a gypsum board whose fire resistance is enhanced by mixing an inorganic fiber material in the core material portion, and one piece has a thickness of 21 mm. Further, the reinforced gypsum board constituting the first face material 51b is attached so that the joint portion (joint portion) with the adjacent reinforced gypsum board does not overlap on the inner surface side and the outer surface side.

The first wall portion 51 is a partition wall having a one-hour fire resistance stipulated by laws and regulations such as the Building Standards Act, and is a second wall portion in addition to a one-hour heat irradiation test from the dwelling unit 3 side. It also clears the heat irradiation test from the 52 side.

The second wall portion 52 is composed of a second base material 52a made of a columnar light iron stud material having a substantially U-shaped cross section and erected at predetermined intervals, and a two-layer gypsum board, and is formed on the second base material 52a. On the other hand, it is provided with a second surface material 52b attached by a fixing tool such as a screw. The lower end and the upper end of the second base material 52a are positioned and connected to each other by the lower runner material fixed to the floor surface and the upper runner material fixed to the beam or the floor slab on the upper floor. One of the gypsum boards constituting the second face material 52b has a thickness of 12.5 mm, and the joints (joints) with the adjacent reinforced gypsum boards do not overlap on the inner surface side and the outer surface side. It is affixed to. Further, a finishing material 56 such as a wall cloth is attached to the surface of the second surface material 52b.

The first wall portion 51 and the second wall portion 52 are arranged apart from each other in the thickness direction of the partition wall 5 (the direction orthogonal to the surfaces of the first face material 51b and the second face material 52b). A cavity 53 is formed between the two. Further, a staircase support pillar 11 for supporting the staircase 42 is erected between the first wall portion 51 and the second wall portion 52. In the middle portion of the staircase support pillar 11, a bracket 12 extending from the outer surface of the staircase support pillar 11 and projecting toward the indoor common portion 4 side from the second surface material 52 is provided. The landing portion 42a of the stairs 42 is supported by the stairs support pillar 11 via the bracket 12. The bracket 12 is a columnar material having a substantially square cross section, and is fixed to the staircase support column 11 by welding or the like. The shape of the bracket 12 and the fixing method to the staircase support column 11 are not particularly limited.

By providing the bracket 12 on the staircase support column 11 in this way, it is possible to minimize the loss of the hole portion 52c or the notch portion formed in the second surface material 52b. As a result, vibration and noise are less likely to be transmitted from the common portion 4 to the dwelling unit portion 3 side.

The staircase support pillars 11 are arranged so as not to overlap the first base material 51a and the second base material 52a when viewed from the indoor common portion 4 side. As a result, the thickness of the entire partition wall 5 can be reduced, and it becomes easy to secure a space in the cavity 53 where a sound insulating material or the like can be placed. Further, the staircase support pillar 11 is arranged at a position separated from the first base material 51a and the second base material 52a.

Further, the staircase support pillar 11 is arranged on the indoor common portion 4 side with respect to the center of the partition wall 5 in the thickness direction (indicated by a straight line L in FIG. 2). This makes it easier to secure a space between the staircase support pillar 11 and the first wall portion 51. Therefore, for example, when a sound insulating material such as rock wool is arranged in the hollow portion 53, the sound insulating material is in a continuous state. It becomes easy to arrange with, and it becomes possible to enhance the effect of improving sound insulation. Further, by arranging the staircase support pillar 11 at a distance close to the landing portion 42a of the staircase 42, it is possible to reduce the length of the bracket 12. According to this, the moment applied to the staircase support pillar 11 can be reduced to support the staircase 42 in a more stable state. In the present embodiment, the partition wall 5 is provided so that the center line L in the thickness direction of the partition wall 5 coincides with the reference line (street core) of the basic module of the building.

In such a partition wall 5, the fire resistance performance is guaranteed by the first wall portion 51 having the first face material 51b and the first base material 51a, so it is necessary to give the second wall portion 52 the fire resistance performance. No. Therefore, it is possible to form a hole 52c through which the bracket 12 penetrates in the second surface material 52b while ensuring the fire resistance required for the partition wall 5. The position where the hole portion 52c is provided is preferably a position in contact with the seam in the second surface material 52b. According to this, the hole portion 52c can be easily machined, and a gap is less likely to be generated around the bracket 12, so that vibration and noise during ascending and descending the stairs 42 are less likely to be transmitted to the dwelling unit portion 3 side. Further, in this case, the shape of the bracket 12 is preferably a shape along the direction of the seam of the second face member 52b. For example, when the seam extends in the vertical direction (vertical direction), the bracket 12 It is preferably in the shape of a vertical plate or a square cylinder.

Further, by ensuring the fire resistance performance of the first wall portion 51, it is not necessary to give the second wall portion 52 the fire resistance performance, so that the degree of freedom in selecting the second face material 52b is increased, and the decorativeness and designability are increased. It is easy to have. Moreover, since the fire resistance is guaranteed by the configuration of only the first wall portion 51, it is not necessary to interpose another face material or the like between the first base material 51a and the second base material 52a, and the partition wall. 5 The overall thickness can be reduced.

Further, the first base material 51a and the second base material 52a are arranged so as not to overlap each other when viewed from the indoor common portion 4 side. More specifically, in the present embodiment, the first base material 51a and the second base material 52a are arranged between the first face material 51b and the second face material 52b in a substantially staggered manner in a plan view. It is erected in a separated state. Since the first base material 51a and the second base material 52a are arranged in a staggered pattern, they are less likely to interfere with each other, and the first wall portion 51 and the second wall portion 52 can be brought close to each other. The thickness of the wall 5 can be reduced.

Further, it is preferable to dispose a sound insulating material such as rock wool in the hollow portion 53 between the first wall portion 51 and the second wall portion 52, and according to this, the sound insulating property of the partition wall 5 is enhanced. For example, vibration and noise when going up and down the stairs 42 are less likely to be transmitted to the dwelling unit 3 side. Further, as described above, by arranging the sound insulating material between the first wall portion 51 and the staircase support pillar 11, the continuity of the sound insulating material can be ensured, and the sound insulation of the partition wall 5 can be more effectively performed. You can improve your sex. By arranging a member having fire resistance and heat insulation such as rock wool in the cavity 53, not only sound insulation but also fire resistance and heat insulation of the partition wall 5 can be improved, and the dwelling unit 3 can be improved. It also contributes to the improvement of the thermal environment. Further, in this example, since the first base material 51a and the second base material 52a are arranged in a staggered pattern in a plan view, even if the thickness of the entire partition wall 5 is reduced, the portion narrowed in the cavity 53 is formed. Is unlikely to occur, and performance deterioration due to crushing of the sound insulating material can be suppressed. It is possible to pass equipment / information-related wiring / piping such as a power cable, a communication cable, a gas pipe, a water supply pipe, and a hot water supply pipe through the cavity 53.

A moisture-proof layer 54 is formed on the surface of the first surface material 51b on the dwelling unit 3 side by a moisture-proof film such as polyethylene (see the broken line in FIG. 2). Further, on the surface of the moisture-proof layer 54 on the dwelling unit 3 side, an interior finishing layer 55 composed of a gypsum board as an interior member and a wall cloth attached to the surface of the gypsum board is formed.

Here, FIG. 3 is a perspective view showing a structure or the like constituting the stairs 42. As shown in FIG. 3, the upper end portion of the staircase support column 11 is fixed to the floor beam 14 on the upper floor by a fastening member such as a bolt via a connecting member 13 having a substantially U-shaped cross section. The lower end of the staircase support column 11 is fixed to the beam or foundation on the lower floor by a fastening member such as a bolt via the connecting member 13. For example, when the stairs 42 connect the first floor and the second floor as in this example, the lower end of the stair support pillar 11 is placed on the upper end surface of the foundation via the connecting member 13, and the anchor bolts are embedded in the foundation. Is fixed using.

FIG. 4 is a partially enlarged view of the side surface of the structure and the like constituting the staircase 42, and FIG. 5 is a partially enlarged view of the side surface of the staircase 42. In this example, the bracket 12 welded to the staircase support column 11 is fixed to the horizontal portion of the girder members 61a and 61b via an auxiliary member 15 having a substantially U-shaped cross section extending over the entire width direction of the landing portion 42a. Has been done. As described above, the horizontal portions of the girder members 61a and 61b are supported by the staircase support columns 11. The inclined portion of the girder member 61a located inside the pair of lower girder members 61a in the width direction and the inclined portion of the girder member 61b located inside the pair of girder members 61b on the upper side in the width direction. It is also possible to connect to each other by means of columnar members or the like that are erected in the vertical direction. In this case, by further enhancing the stability of the stairs 42, vibration, noise, and the like during ascending and descending can be further suppressed.

The structure, which is a frame that bears the load acting on the stairs 42, is mainly composed of steel girder members 61a and 61b and step plate members 62 (62A, 62B, 62C). The girder members 61a and 61b are substantially "he" -shaped members having an inclined portion and a horizontal portion. The lower staircase portion 42b and the upper staircase portion 42c are formed by bending a steel plate into a substantially mountain-shaped side view to form a plurality of step plate members 62a in which a tread surface portion 62a and a riser portion 62b are formed, and a pair of girder members 61a and a pair. It is formed by bolting to each inclined portion of the girder member 61b of the above.

Further, in the landing portion 42a, the step plate member 62B having a substantially L-shaped cross section is bolted to the horizontal portion of the pair of girder members 61a, and the plate-shaped step plate member 62C is attached to the horizontal portion of the pair of girder members 61b. It is formed by bolting. The outer edge portion of each step plate member 62 protrudes from the girder members 61a and 61b arranged on the outside.

As shown in FIG. 5, a floor base material 63 made of anti-vibration rubber or the like is attached to the surface of the step board member 62A (the same applies to 62B and 62C), and a tile carpet is further applied to the surface of the floor base material 63. A finishing material 64 such as a decorative sheet made of vinyl chloride or vinyl chloride is attached. Further, on the second wall portion 2b (second face material 52b) on both sides in the width direction of the stairs 42, a thin plate-shaped lumber 65 (vibration suppressing means) is provided along the edge of the step plate member 62 in the width direction. It is installed so that it extends. The lumber 65 also has a function as a parting material for separating the finishing material 64 and the finishing material 56 on the surface of the second face material 52b.

FIG. 6 is an enlarged vertical cross-sectional view of the lower staircase portion 42b or the upper staircase portion 42c in the width direction, so that the end face of the skirting board 65 on the step plate member 62 side abuts on the surface of the floor base material 63. , It is fixed to the second face material 52b of the second wall portion 52. With such a configuration, as shown in FIGS. 5 and 6, the edge of the tread portion 62a is pressed from above, and the edge of the riser portion 62b is pressed from the front direction, that is, the baseboard 65. A state in which the step plate member 62 is restrained by the partition wall 5 is realized. As a result, vibration and noise of the stairs 42 when a resident or the like goes up and down can be suppressed without dividing the first wall portion 5a (that is, without causing a decrease in the fire resistance performance of the partition wall 5). The living environment of the apartment house 1 can be improved. The structure of the stairs 42 may be such that the edge of the step plate member 62 is sandwiched between the divided second face members 52b and is directly restrained by the second face member 52b.

FIG. 7 is a front view of the lower staircase portion 42b of the staircase 42. The handrail 66 is not fixed to the structure of the stairs 42, but is fixed to the wall 91 raised from the floor 9 by using a fastening means such as a screw. By doing so, it is difficult for the load to be transmitted to the structure of the stairs 42 through the handrail 66, and the structure of the structure can be simplified more than the structure in which the handrail 66 is fixed to the structure. Variations in the shape and arrangement of the handrail 66 can be easily increased. The handrail 66 does not necessarily have to be fixed to the wall 61 in order to obtain the above advantages, and may be fixed to the second wall portion 52.

The stairs 42 are not limited to the folded stairs, but may be straight stairs, L-shaped stairs, or the like. In either case, inside the partition wall adjacent to the stairs, a staircase support pillar is provided to support the stairs without impairing the fire resistance of the first wall portion of the partition wall.

The building according to the present invention is not limited to the configuration of the above-described embodiment, and can be realized by various configurations without departing from the contents described in the claims. For example, in a maisonette-style (a form in which dwelling units with multiple floors are connected in a plane) apartment house (including a two-family house), stairs may be provided along the boundary wall that divides two adjacent dwelling units. can. In that case, one of the two dwelling units on which the stairs are provided becomes the second space, and the other becomes the first space. Further, the first space and the second space are not limited to the dwelling unit or the indoor common area, and may be, for example, a store or an office. Further, as the first surface material 51b, a lightweight cellular concrete (ALC) panel having a thickness of 50 mm or less may be used instead of the two-layer reinforced gypsum board.

In addition, an arbitrary number of dwelling units of 1 or more can be provided on each floor of the apartment house 1 of the above embodiment. In addition, the floor plan is not particularly limited, and it can be appropriately designed according to the form of the site, the given conditions such as laws and regulations.

1: Apartment house (building)
2: Outer wall 3: Dwelling unit (first space)
3a, 3b: Dwelling unit 4: Indoor common area (second space)
5: Partition wall 6: Boundary wall 7: Opening 8: Dwelling unit entrance door 9: Floor 11: Stair support pillar 12: Bracket 13: Connecting member 14: Floor beam 15: Auxiliary member 41: Common corridor 42: Stairs 42a: Landing area 42b: Lower staircase 42c: Upper staircase 43: Opening 44: Common entrance door 51: First wall 51a: First base material 51b: First surface material 52: Second wall 52a: Second Base material 52b: Second face material 52c: Hole 53: Cavity 54: Moisture-proof layer 55: Interior finishing layer 56: Finishing material 61a, 61b: Girder member 62A, 62B, 62C: Step plate member 62a: Tread part 62b: Rising part 63: Floor base material 64: Finishing material 65: Width wood (vibration suppression means)
66: Handrail 91: Wall

Claims (9)

A building including a partition wall that divides an internal space surrounded by an outer peripheral wall into a first space and a second space, and stairs installed along the partition wall in the second space.
The partition wall includes a first wall portion that Yusuke first surface member, and the first base material first surface member is attached,
A second face material arranged to face the second space side with respect to the first face material, and a second wall portion having a second base material to which the second face material is attached are provided.
Of the first wall portion and the second wall portion, only the first wall portion has a predetermined fire resistance.
A building characterized in that a staircase support pillar for supporting the stairs is provided between the first wall portion and the second wall portion. The building according to claim 1, wherein the staircase support pillars are arranged so as not to overlap the first base material and the second base material when viewed from the second space side. A plurality of the first base materials are erected along the first face material at predetermined intervals.
A plurality of the second base materials are erected along the second face material at predetermined intervals.
The building according to claim 1 or 2, wherein the first base material and the second base material are arranged so as not to overlap each other when viewed from the second space side. The building according to claim 3, wherein a sound insulating material is arranged between the first wall portion and the staircase support pillar inside the partition wall. The building according to any one of claims 1 to 4, wherein the staircase support pillar is arranged on the second surface material side with respect to the thickness center of the partition wall. A bracket protruding toward the second space side from the second face material is provided in the middle portion of the staircase support column, and the staircase is supported by the staircase support column via the bracket. The building according to any one of claims 1 to 5. The building according to claim 6, wherein the bracket projects from the second face material to the second space side through a hole or a notch formed in the second face material. The building according to any one of claims 1 to 7 , wherein the edge portion of the step plate member of the stairs on the partition wall side is suppressed from above by a vibration suppressing means attached to the partition wall. The building according to any one of claims 1 to 8, wherein the predetermined fire resistance of the first wall portion is guaranteed for one hour of fire resistance specified by a law such as the Building Standards Act.

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