JP2018168578A - building - Google Patents

Abstract

To provide a building having a structure capable of utilizing a space without impairing the fire resistance efficiency of the partition wall or spoiling the aesthetic appearance even in the case of providing an indoor staircase along the partition wall.SOLUTION: The building comprises a partition wall 5 which partitions the inner space surrounded by the outer peripheral wall 2 into a first space 3 and a second space 4, and a staircase 42 which is installed along the partition wall 5 in the second space 4. The partition wall 5 includes a first wall portion 51 having a first surface member 51b and a first substrate member 51a to which the first surface member 51b is attached and having a predetermined fire resistance efficiency, and a second wall portion 52 having a second surface member 52b arranged to be opposed to the first surface member 51b in the second space 4 side, and a second substrate member 52a to which the second surface material 52b is attached. Between the first wall portion 51 and the second wall portion 52, a stair support pillar 11 for supporting the staircase 42 is provided.SELECTED DRAWING: Figure 2

Description

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

  Conventionally, a building such as a house having a staircase indoors is known. For example, Patent Document 1 discloses a building including a folding staircase having a landing. When such a staircase is installed, the middle part of the stairway such as a landing is not connected to the floor or 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. Yes.

  By the way, in a building having a plurality of dwelling units, such as an apartment house or a two-family house, for example, a wall that divides two adjacent dwelling units, or a building that has an indoor common part such as an indoor corridor or an indoor staircase, is shared indoors The wall that divides the part is required to have a predetermined fire resistance.

JP 2010-13925 A

  And, when trying to install a column inside the partition wall having such a predetermined fire resistance, a part of the surface material on the staircase side of the partition wall (bolts, screws, metal fittings etc. for fixing the staircase to the column) The fixing part) must be lost, and the fire resistance may 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 avoiding the partition wall so as not to impair the fire resistance performance. There is a problem that effective utilization is hindered. In some cases, the pillar must be exposed to the internal space side, which causes a problem of deteriorating the beauty.

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

The present invention has been made to solve the above problems, and the building of the present invention includes a partition wall that partitions an internal space surrounded by an outer peripheral wall into a first space and a second space, and the second wall. A building comprising a staircase installed in the space along the partition wall,
The partition wall includes a first face member and a first wall part having a predetermined fire resistance while having a first base material to which the first face member is attached,
A second surface member disposed opposite to the first space member on the second space side, and a second wall portion having a second base material to which the second surface member is attached,
A staircase support column for supporting the staircase is provided between the first wall portion and the second wall portion.

  In the building of the present invention, the stair support pillar may be arranged so as not to overlap the first base material and the second base material in a front view as viewed from the second space side. preferable.

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

  Moreover, in the building of this invention, it is preferable that the sound insulation material is arrange | positioned between the said 1st wall part and the said staircase support pillar inside the said division wall.

  Moreover, in the building of this invention, it is preferable that the said staircase support column is arrange | positioned rather than the thickness center of the said partition wall at the said 2nd surface material side.

  In the building of the present invention, a bracket projecting toward the second space from the second face material is provided at an intermediate portion of the stair support pillar, and the staircase is interposed via the bracket. It is preferably supported by the staircase support column.

  Moreover, in the building of this invention, it is preferable that the edge part by the side of the said partition wall in the step board member of the said staircase is suppressed from the upper direction by the vibration suppression means attached to the said partition wall.

  According to the present invention, even when an indoor staircase is provided along a partition wall, a configuration capable of effectively utilizing the space without impairing the fire resistance performance of the partition wall or impairing the aesthetic appearance. You can provide a building with.

It is a top view which shows partially the building of one Embodiment of this invention. It is an expanded sectional view of the partition wall shown in FIG. It is a perspective view which shows the structure etc. of the staircase in FIG. It is the elements on larger scale in the side view of the structure etc. in FIG. It is the elements on larger scale in the side view of the stairs in FIG. It is an expanded sectional view in the width direction of a lower step part or an upper step part. It is a front view of the lower stairs part of the stairs shown in FIG.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common structure in each figure. In addition, although the building (collective housing 1) demonstrated below has a several hierarchy, unless there is particular notice, it demonstrates on the 1st floor as an example for convenience of explanation.

  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 partitions an internal space and an outdoor space. The outer peripheral wall 2 includes, for example, an external finish layer formed by connecting exterior panel materials made of lightweight cellular concrete (ALC) having a coating film as a waterproof layer formed on the surface side, and phenol foam, for example. It is composed of a heat insulation layer constructed by connecting the foamed resin-based insulation panel material along the inner surface of the exterior finish layer, and a finish material such as a wall cloth affixed to the surface of the gypsum boat and gypsum board However, it is not particularly limited. The outer peripheral wall 2 should just have the fireproof performance and waterproof performance which can form a predetermined fireproof division at least.

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

  The indoor shared section 4 is provided with a stairway 42 that is arranged along the partition wall 5 and connects the shared hallway 41 and the shared hallway on the upper floor. The staircase 42 is a turn-up staircase, and connects the landing stage 42a (turn-back section), the linear lower staircase section 42b that connects the landing section 42a and the lower floor, and the landing section 42a and the upper floor. And a linear upper staircase portion 42c.

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

  The outer peripheral wall 2 facing the shared hallway 41 on the first floor is formed with an opening 43 that allows the indoor shared part 4 to communicate with the external space, and the shared entrance door 44 is provided in the opening 43. Above the top floor of the indoor shared section 4 is covered with a roof, so that the indoor shared sections 4 at all levels are partitioned from the external space. The indoor shared section 4 may further be provided with a mechanical lifting means such as an elevator, or may be provided with a vent.

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

  The first wall portion 51 is composed of a columnar light iron stud material having a substantially U-shaped cross section or a substantially B-shaped cross section, and a first base material 51 a erected at a predetermined interval and a double-layered reinforced gypsum board. And a first face material 51b attached to the first base material 51a by a fixing tool such as a screw.

  The lower end and upper end of the first base material 51a are positioned and connected to each other by the lower runner material fixed to the floor and the upper runner material fixed to the upper floor beam or floor slab. 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 into the core material portion, and one sheet has a thickness of 21 mm. Moreover, the reinforced gypsum board which comprises the 1st surface material 51b is stuck so that the joint part (joint part) with an adjacent reinforced gypsum board may not overlap with an inner surface side and an outer surface side.

  The 1st wall part 51 is a partition wall which has the fire resistance performance of 1 hour prescribed | regulated by laws and regulations, such as a building standard law, etc., and in addition to the irradiation test of the 1 hour fire heat from the dwelling unit part 3 side, the 2nd wall part The fire test from the 52 side is also cleared.

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

  The first wall portion 51 and the second wall portion 52 are spaced apart from each other in the thickness direction of the partition wall 5 (the direction perpendicular to the surfaces of the first face material 51b and the second face material 52b). A cavity 53 is formed between them. Further, between the first wall portion 51 and the second wall portion 52, the staircase support column 11 for supporting the staircase 42 is erected. A bracket 12 that extends from the outer surface of the staircase support column 11 and protrudes toward the indoor shared portion 4 side than the second face material 52 is provided at the intermediate portion of the staircase support column 11. The landing 42 a of the staircase 42 is supported by the staircase support pillar 11 through the bracket 12. The bracket 12 is a columnar material having a substantially square cross section, and is fixed to the stair support column 11 by welding or the like. In addition, the shape of the bracket 12 and the fixing method with respect to the staircase support pillar 11 are not specifically limited.

  As described above, by providing the bracket 12 on the stair support pillar 11, it is possible to minimize a deficiency such as a hole 52c formed in the second face material 52b or a notch. Thereby, vibration and noise are more difficult to be transmitted from the shared unit 4 to the dwelling unit 3 side.

  The staircase support column 11 is arranged so as not to overlap the first base material 51a and the second base material 52a in a front view as viewed from the indoor shared section 4 side. Thereby, the thickness of the partition wall 5 as a whole can be reduced, and it becomes easy to secure a space in which the sound insulating material and the like in the hollow portion 53 can be arranged. The staircase support column 11 is disposed at a position separated from the first base material 51a and the second base material 52a.

  Further, the staircase support column 11 is disposed closer to the indoor shared section 4 than the center of the partition wall 5 in the thickness direction (indicated by a straight line L in FIG. 2). Thereby, since it becomes easy to ensure space between the staircase support pillar 11 and the 1st wall part 51, when arrange | positioning sound insulation materials, such as rock wool, for example in the cavity 53, the said sound insulation material is continued. It becomes easy to arrange by, and it becomes possible to raise the improvement effect of sound insulation. Moreover, it becomes possible to reduce the length of the bracket 12 by arranging the stair support pillar 11 at a distance close to the landing 42a of the stair 42. According to this, the moment concerning the staircase support column 11 can be reduced, and the staircase 42 can be supported in a more stable state. In the present embodiment, the partition wall 5 is provided such that the center line L in the thickness direction of the partition wall 5 coincides with the reference line (core) of the basic module of the building.

  In such a partition wall 5, since the fire resistance is secured by the first wall 51 having the first face material 51b and the first base material 51a, it is necessary to give the second wall 52 fire resistance. Absent. Therefore, the hole 52c that allows the bracket 12 to penetrate can be formed in the second face material 52b while ensuring the fire resistance required for the partition wall 5. In addition, it is preferable that the position where this hole 52c is provided is a position in contact with the joint in the second face material 52b. According to this, the processing of the hole 52c is facilitated, and further, a gap is hardly generated around the bracket 12, so that vibration and noise when the stairs 42 are raised and lowered are hardly transmitted to the dwelling unit 3 side. In this case, the shape of the bracket 12 is preferably a shape along the direction of the seam of the second face material 52b. For example, when the seam extends in the vertical direction (vertical direction), the bracket 12 A vertical plate shape or a rectangular tube shape is preferable.

  Moreover, since it becomes unnecessary to give the 2nd wall part 52 a fireproof performance by ensuring fireproof performance by the 1st wall part 51, the freedom degree of selection of the 2nd face material 52b becomes high, and decorative property and design property It is easy to have. In addition, since the fire resistance performance is ensured by the configuration of only the first wall portion 51, there is no need to interpose another face material or the like between the first base material 51a and the second base material 52a. The total thickness of 5 can be reduced.

  In addition, 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 shared section 4 side. More specifically, in the present embodiment, the first base material 51a and the second base material 52a are substantially staggered in plan view between the first face material 51b and the second face material 52b. Standing up apart. Since the first base material 51a and the second base material 52a are arranged in a staggered manner, it is difficult 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.

  Moreover, it is preferable to arrange 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. According to this, the sound insulating property of the partition wall 5 is improved. For example, vibration and noise when moving up and down the stairs 42 are difficult 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 column 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. Can increase the sex. In addition, by disposing a member having fire resistance and heat insulation such as rock wool in the cavity 53, not only the sound insulation but also the fire resistance and heat insulation of the partition wall 5 can be enhanced. It also contributes to improving the thermal environment. Further, in this example, the first base material 51a and the second base material 52a are arranged in a staggered manner in a plan view, so that even if the thickness of the entire partition wall 5 is reduced, the portion narrowed in the cavity 53 Is less likely to occur, and performance degradation due to the sound insulation material being crushed can be suppressed. In addition, it is possible to pass wiring and piping related to facilities and information such as a power cable, a communication cable, a gas pipe, a water supply pipe, and a hot water supply pipe through the hollow portion 53.

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

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

  FIG. 4 is a partial enlarged view of a side surface of a structure or the like constituting the staircase 42, and FIG. 5 is a partial enlarged view of a 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 beam members 61a and 61b via the auxiliary member 15 having a substantially U-shaped cross section extending over the entire width direction of the landing portion 42a. Has been. As described above, the horizontal portions of the beam members 61 a and 61 b are supported by the staircase support pillar 11. Of the pair of lower spar members 61a, the inclined part of the spar member 61a located on the inner side in the width direction and the inclined part of the spar member 61b located on the inner side in the width direction of the upper pair of spar members 61b. It is also possible to connect to each other by columnar members or the like standing in the vertical direction. In this case, by further improving the stability of the staircase 42, vibration and noise at the time of raising and lowering can be further suppressed.

  The structure which is a framework that bears the load acting on the stairs 42 is mainly composed of steel beam members 61a and 61b and step plate members 62 (62A, 62B, and 62C). The girder members 61a and 61b are substantially “h” -shaped members each having an inclined portion and a horizontal portion. The lower staircase portion 42b and the upper staircase portion 42c are formed of a plurality of step plate members 62A in which a tread surface portion 62a and a kick-in portion 62b are formed by bending a steel plate into a substantially mountain shape in a side view, and a pair of beam members 61a and a pair Each of the girder members 61b is formed by bolting to each inclined portion.

  Further, the landing part 42a bolts a stepped plate member 62B having a substantially L shape in cross section to the horizontal part of the pair of girder members 61a, and a plate-like stepped plate member 62C on the horizontal part of the pair of girder members 61b. It is formed by bolting. In addition, the outer edge part of each step board member 62 protrudes rather than the girder members 61a and 61b arrange | positioned on the outer side.

  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 corrugated board member 62A (same for 62B and 62C), and the tile carpet is further attached to the surface of the floor base material 63. A finishing material 64 such as a decorative sheet made of vinyl chloride is attached. Further, on the second wall portion 2 b (second face material 52 b) on both sides in the width direction of the staircase 42, a thin plate-like baseboard 65 (vibration suppressing means) is provided along the edge in the width direction of the step plate member 62. It is attached to extend. The skirting board 65 also has a function as a parting material for observing the finishing material 64 and the finishing material 56 on the surface of the second face material 52b.

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

  FIG. 7 is a front view of the lower step portion 42 b of the stairs 42. The handrail 66 is not fixed to the structure of the staircase 42, but is fixed to the wall 91 raised from the floor 9 using fastening means such as screws. In this way, the load is not easily transmitted to the structure of the staircase 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. Note that the handrail 66 does not necessarily have to be fixed to the wall 61 in order to obtain the above-described advantages, and may be fixed to the second wall portion 52.

  The staircase 42 is not limited to the folded staircase, and may be a straight staircase, an L-shaped staircase, or the like. In any case, a staircase support column that supports the staircase is provided inside the partition wall adjacent to the staircase 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 embodiment described above, and can be realized by various configurations without departing from the content described in the claims. For example, in an apartment house (including a two-family house) in a maisonette format (a form in which dwelling units having a plurality of floors are connected in a plane), a staircase may be provided along the boundary wall that partitions two adjacent dwelling units. it can. In that case, one of the two dwelling units provided with a staircase is the second space, and the other is the first space. In addition, the first space and the second space are not limited to dwelling units or indoor shared units, and may be stores or offices, for example. Further, as the first face material 51b, a lightweight cellular concrete (ALC) panel having a thickness of 50 mm or less may be used instead of the double-layered reinforced gypsum board.

  Moreover, one or more arbitrary numbers of dwelling units can be provided on each floor of the apartment house 1 of the previous embodiment. In addition, the floor plan is not particularly limited, and can be appropriately designed according to the conditions of the site, legal regulations, and the like.

1: Apartment house (building)
2: Perimeter wall 3: Dwelling unit (first space)
3a, 3b: dwelling unit 4: indoor common part (second space)
5: division 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: stairway 42a: Landing part 42b: Lower stairs part 42c: Upper stairs part 43: Opening part 44: Common entrance door 51: First wall part 51a: First base material 51b: First face material 52: Second wall part 52a: Second Base material 52b: second surface material 52c: hole 53: cavity portion 54: moisture-proof layer 55: interior finishing layer 56: finishing material 61a, 61b: girder members 62A, 62B, 62C: step plate member 62a: tread surface portion 62b: Kicking part 63: Floor base material 64: Finishing material 65: Skirting board (vibration suppression means)
66: Handrail 91: Wall

Claims (7)

A building comprising a partition wall that partitions an internal space surrounded by an outer peripheral wall into a first space and a second space, and a staircase installed along the partition wall in the second space,
The partition wall includes a first face member and a first wall part having a predetermined fire resistance while having a first base material to which the first face member is attached,
A second surface member disposed opposite to the first space member on the second space side, and a second wall portion having a second base material to which the second surface member is attached,
A building having a staircase support column for supporting the staircase is provided between the first wall portion and the second wall portion.   2. The building according to claim 1, wherein the staircase support pillar is disposed so as not to overlap the first base material and the second base material in a front view as viewed from the second space side. A plurality of the first base materials are erected at predetermined intervals along the first face material;
A plurality of the second base materials are erected at predetermined intervals along the second face material;
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 in a front view as viewed from the second space side.   The building according to claim 3, wherein a sound insulating material is disposed 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 column is disposed closer to the second face material than a thickness center of the partition wall.   A bracket projecting to the second space side from the second face material is provided at an intermediate portion of the stair support column, and the staircase is supported by the stair support column via the bracket. The building according to any one of claims 1 to 5.   The building according to any one of claims 1 to 6, wherein an edge on the partition wall side of the step plate member of the staircase is suppressed from above by vibration suppressing means attached to the partition wall.

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