building

Abstract

To provide a building effectively utilizing in design and function an area where external staircases are arranged.SOLUTION: A building 10 is provided with: a concave area A2 of an outdoor; and an exterior part having indoor transparent wall members G1 partitioned with the concave area A2 and walls. The building 10 is provided with external staircases arranged in the concave area A2 and continued from an objective floor to a right above floor. Further, in the concave area A2, a screen member 50 is provided by arranging a plurality of vertical members side by side apart from each other on an exterior part side of the external stairs.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a building provided with an outdoor staircase.

Background Art

[0002] Conventionally, there are known buildings in which an external staircase (outdoor staircase) is provided outdoors for purposes of use such as evacuation (see, for example, Patent Document 1). In the building described in Patent Document 1, evacuation stairs facing outward are provided at the four corners of an above-ground erection. Specifically, steel beams for one span are directly connected to each other in a state of being exposed vertically and horizontally so as to surround two outer surfaces of the staircase installation space. In this case, a link member is inserted into a part of the exposed steel beam in the length direction and integrally connected.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] However, as shown in Patent Document 1, from the viewpoint of the purpose of use, outdoor staircases have a design different from that of other indoor portions. For this reason, it has been difficult to effectively utilize the area provided with the outdoor staircase both in terms of design and function.

Means for Solving the Problem

[0005] A building that solves the above problem comprises: an exterior portion having a recessed area that is located outdoors, and an indoor wall surface partitioned from the recessed area by a wall; and an outdoor staircase provided in the recessed area and extending from a target floor to the floor immediately above, wherein in the recessed area, a screen member formed by arranging a plurality of vertical members at intervals is provided on the exterior portion side of the outdoor staircase.

Effect of the Invention

[0006] According to the present invention, it is possible to construct a building that effectively utilizes the area where an outdoor staircase is installed, both aesthetically and functionally. [Brief explanation of the drawing]

[0007] [Figure 1] This is a front view of a building illustrating the exterior of the building in the embodiment. [Figure 2] This is a plan view of the main part of the intermediate floor in the embodiment. [Figure 3] This is a perspective view of the exterior of the intermediate floor in the embodiment. [Figure 4] This is a cross-sectional view of the main part in the direction of line 4-4 in Figure 2. [Figure 5] This is a front view of the main part of the exterior of the intermediate floor in the embodiment. [Figure 6] This is a plan view of the recessed area, which is the outdoor area of ​​the intermediate floor in the embodiment. [Figure 7] This is a plan view illustrating the screen member provided in the recessed area in the embodiment. [Figure 8] This is a cross-sectional view of the main part in the direction of line 8-8 in Figure 6. [Figure 9] This is a perspective view of the outdoor stairs and screen member from the wall side that separates the outdoor and indoor areas of the recessed region in the embodiment. [Figure 10] This is a perspective view of the exterior of the intermediate floor in the modified example. [Figure 11] This is a front view of the main exterior section on the intermediate floor in the modified example. [Figure 12] This is a plan view illustrating the screen member in the recessed area of ​​the modified example. [Figure 13] This is a side view of the main part of the vertical members that make up the screen component in the modified example. [Modes for carrying out the invention]

[0008] Below, an embodiment of the building will be described using Figures 1 to 9. In this embodiment, the area where the outdoor staircase is located on the middle floor is effectively utilized, and the building described is an office building where work is mainly carried out.

[0009] Figure 1 is a front view of building 10, and Figure 2 is a plan view of the front side of building 10. Figure 3 is a perspective view of the middle floor of building 10, seen from the left side of the front. Figure 4 is a cross-sectional view taken along line 4-4 in Figure 2.

[0010] As shown in Figure 1, the building 10 is nine stories tall, and in the middle floors, such as the 5th to 7th floors, side wall members 29 are provided to cover the sides of the floor slabs and floor surface members, which will be described later. In the building 10, in the area where the floor slab of the target floor of the intermediate floor is located, there is an indoor portion A1 enclosed by walls and an outdoor recessed portion A2 exposed to the outside. In this embodiment, the indoor portion A1 is located in the center of the front, and the recessed portion A2, which is exposed to the outside on the left side, is located as the exterior portion. Here, as shown in Figure 3, the recessed area A2 is exposed to the outdoors not only on the front but also on the left side. This allows the outdoor staircase 40, which will be described later and located in the recessed area A2, to function as an escape staircase under the Building Standards Act. The recessed area A2 is open on two sides (the front and the left side). Furthermore, in building 10 shown in Figure 1, the right side of the front (opposite to the recessed area A2) is also a terrace exposed to the outdoors.

[0011] Multiple transparent wall members G1 are arranged on the front side of the indoor section A1. These transparent wall members G1 are constructed by connecting multiple transparent glass plate members in the lateral direction (left-right direction on the front).

[0012] As shown in Figure 2, the left side of the transparent wall member G1 is disposed so as to protrude into the recessed area A2, and the right side of the transparent wall member G1 is disposed so as to protrude to cover the front side of the terrace T1. Further, in the recessed area A2, an outdoor staircase 40 is provided. In the target floor of this recessed area A2 and the floor slab (and floor surface members, etc.) of the floor directly above located thereabove, an opening h1 having a size that allows use of the outdoor staircase 40 is formed.

[0013] The building 10 comprises, in the indoor section A1, a plurality of columns 21, 22, 23, 24 arranged in a row spaced at substantially equal intervals. The front end of the left outer wall 31 and the left end of the front wall 32 abut against the column 21.

[0014] Openings 32a and 32b are provided in the wall 32 near the column 22. These openings 32a and 32b serve as entrances and exits between the indoor section A1 and the recessed area A2. Doors are provided in these openings 32a and 32b. The doors and the wall 32 in which the doors are provided satisfy the requirement for the outdoor staircase 40 to serve as an evacuation staircase under the Building Standards Act (there are no openings other than the entrance to the outdoor staircase 40 within 2 meters).

[0015] One end of a wall 34 formed of a transparent member is fixed to the right end of the wall 32. The other end of this wall 34 is fixed to the transparent wall member G1. Accordingly, the outwardly exposed recessed area A2 is defined by the walls 32 and 34. Here, a part of the wall 34 may be configured as a sliding door, and this sliding door may serve as an entrance and exit between the indoor section A1 and the recessed area A2.

[0016] One end of a wall 36 is fixed to the transparent wall member G1 near the right end thereof. The wall 36 is provided with an opening with a sliding door for entering and exiting the terrace T1. The end of a wall 37 is provided at the other end of this wall 36. Thereby, the outwardly exposed terrace T1 is defined. Furthermore, the right end of the wall 37 is fixed to the end of an outer wall 38. Accordingly, the indoor section A1 of the building 10 is defined on the front side by the outer wall 31, the walls 32 and 34, the transparent wall member G1, the walls 36 and 37, and the outer wall 38.

[0017] (Mounting configuration of transparent wall member G1) Figure 4 shows the floor slab portion of the intermediate floor (target floor) where the transparent wall member G1 is located. In this embodiment, the slabs located in the ceiling and floor of the intermediate floor have the same configuration.

[0018] As shown in Figure 4, the building 10 is equipped with an H-shaped steel beam 25. A ceiling member 26 is attached to the lower flange of the beam 25, and a floor slab 27 to which a floor surface member 28 is fixed is provided on the upper flange of the beam 25.

[0019] A side wall member 29 is fixed to the side (front) of the floor slab 27 by embedded fittings (not shown). The side wall member 29 comprises a vertically extending side portion 29a and an eaves portion 29b connected to the lower end of the side portion 29a. The inside of the side portion 29a of the side wall member 29 is fixed to the upper flange and web of the beam 25 via fittings.

[0020] The side wall member 29 in the area where the transparent wall member G1 is placed has a notch 29g at the lower inner end of the side wall member 29. The upper end of the transparent wall member G1 is fixed via a fixing member 30a fixed to this notch 29g. In addition, a coping rail K1 is provided at the upper end of the side surface 29a of the side wall member 29. The lower end of the transparent wall member G1 is fixed by this coping rail K1 and a fixing member 30b fixed to the side wall member 29. A privacy screen member S1 may be provided on the inside of the transparent wall member G1.

[0021] (Outdoor staircase configuration of 40) Figure 5 is an enlarged front view of the main part of the recessed area A2 on the intermediate floor, and Figure 6 is a plan view of the recessed area A2. Figure 7 is an explanatory diagram illustrating the configuration of the screen member 50 placed in the recessed area A2 of Figure 6. Furthermore, Figure 8 is a cross-sectional view in the direction of line 8-8 in Figure 6, and Figure 9 is a perspective view of the recessed area A2 from the wall 32 side.

[0022] As shown in Figures 5 and 8, the outdoor staircase 40 is formed at the same location so as to extend continuously from the rooftop to the ground. This outdoor staircase 40 is a switchback staircase equipped with a landing 42, and is constructed of a fire-resistant material such as steel, satisfying the requirements for an escape staircase under the Building Standards Act. The outdoor staircase 40 of this embodiment comprises stair sections 41a, 41b and a landing 42. The landing 42 connects a stair section 41a with several steps (for example, about 5 steps) from the floor surface to a stair section 41b that continues to the floor directly above. A handrail 43 is erected on the landing 42 on the side opposite to the stair section. The handrail 43 is constructed by combining steel pipes. Furthermore, a hook bar 43a is provided at the top of the handrail 43, projecting toward the stair section 41b. This hook bar 43a is designed to be used as a seat and functions as a chair.

[0023] As shown in Figure 9, a counter 45 is provided inside the opening h1, between the stair sections 41a and 41b. The counter 45 is made of plate-like members and is supported by a plate-like member erected at its end and a plurality of spaced-apart iron pipes.

[0024] Furthermore, handrails 46a and 46b are provided on the staircase sections 41a and 41b, on the side facing the counter 45. Like handrail 43, handrails 46a and 46b are constructed by combining steel pipes.

[0025] (Configuration of screen member 50) As shown in Figure 6, a screen member 50 is provided on the outer (front) side of the outdoor staircase 40 in the recessed area A2. This screen member 50 extends to the left end of the recessed area A2 and near the wall 34.

[0026] As shown in Figure 9, a portion of this screen member 50 is positioned along the opening h1 formed in the floor slab 27. As shown in Figure 7, the screen member 50 is constructed by arranging two types of round bars 51 and 52 alternately in a row. The round bars 51 and 52 are cylindrical members, and the round bar 51 has a larger diameter D0 than the round bar 52. That is, the round bar 51 corresponds to the large diameter member, and the round bar 52 corresponds to the small diameter member. The round bars 51 and 52 are arranged such that the gap between them is larger than the diameter D0 of the larger round bar 51. In this case, the spacing L1 between the round bars 51 and 52 may be more than twice the diameter D0 of the larger round bar 51 (L1 > 2 × D0). This ensures that the screen member 50 is installed so that the opening ratio on the side where it is arranged is 50% or more. Furthermore, as shown in Figure 9, the round bars 51 and 52 placed in the opening h1 are fixed at their upper and lower ends by mounting members (not shown) provided on the inner wall surface of the opening h1.

[0027] (action) The building 10 has an exterior section comprising a transparent wall member G1 that partitions the indoor section A1 and a recessed area A2 that is outdoors. An outdoor staircase 40 is provided in this recessed area A2. Furthermore, in the recessed area A2, a screen member 50 is provided on the exterior side of the outdoor staircase 40, consisting of multiple round bars 51 and 52 arranged at intervals. As a result, the recessed area A2 where the outdoor staircase 40 is located appears like a curtain when viewed from the outside.

[0028] According to this embodiment, the following effects can be obtained. (1) In this embodiment, the building 10 comprises an exterior section having a transparent wall member G1 that partitions the indoor section A1 and a recessed area A2 that is outdoors, and an outdoor staircase 40 provided in the recessed area A2. As a result, the outdoor staircase 40 is positioned within the range of the floor slab 27 of the building 10, so that the recessed area A2 where the outdoor staircase 40 is located and the indoor section A1 appear as one, thus creating a building 10 with a sense of design unity. Furthermore, since the outdoor staircase 40 in the recessed area A2 can be seen from the front, the outdoor staircase 40, which also serves as an escape staircase, can be easily seen.

[0029] (2) In this embodiment, a screen member 50 is arranged in the recessed area A2 on the outside side of the outdoor staircase 40, and is composed of multiple round bars 51 and 52 spaced apart from each other. This makes the recessed area A2 where the outdoor staircase 40 is located look like a curtain when viewed from the outside, and also allows the outdoor staircase 40 to be hidden and prevents wind, snow, etc. from entering.

[0030] (3) The screen member 50 of this embodiment is composed of round bars 51 and 52. This allows incident light to be reflected and scattered in a curved manner, thereby suppressing the temperature rise caused by direct sunlight in the recessed area A2 outdoors.

[0031] (4) In this embodiment, the round bars 51 and 52 of the screen member 50 are positioned so that the outdoor staircase 40 penetrates the opening h1 formed in the floor surface member 28 or floor slab 27 that leads to the floor directly above. As a result, the outside (front side) of the outdoor staircase 40 can be covered by the round bars 51 and 52 of the screen member 50 without the need to provide a handrail on the outside of the outdoor staircase 40. Therefore, it is possible to suppress objects from falling from the outdoor staircase 40.

[0032] (5) In this embodiment, the recessed area A2 is open on two connected surfaces (front and left side). Furthermore, the screen member 50 is arranged with gaps wider than the diameter D0 of the thick round bars 51 between each round bar 51 and 52. As a result, the recessed area A2 becomes a space where more than half is open on two surfaces, so that the outdoor staircase 40 can function as an escape staircase in accordance with the Building Standards Act.

[0033] (6) In this embodiment, the outdoor staircase 40 comprises stair sections 41a, 41b and a landing 42. This allows the landing 42 of the outdoor staircase 40 to be used as an open space where users can rest, communicate, etc.

[0034] (7) In this embodiment, the handrail 43 erected on the landing 42 of the outdoor staircase 40 is provided with a hook bar 43a that functions as a seat. This allows for resting in the recessed area A2.

[0035] This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically. In the above embodiment, the screen member 50 is constructed by arranging round bars 51 and 52 of different thicknesses alternately in a single row. The configuration of the screen member 50 is not limited to this. For example, multiple types of rod-shaped members of different thicknesses may be arranged randomly, or they may be arranged according to a certain rule. Furthermore, it is not limited to round bars; square bars may be arranged, or round bars of different thicknesses may be arranged at the top and bottom.

[0036] Specifically, the screen member 70 shown in Figures 10 and 11 is placed in place of the screen member 50 in the above embodiment. This screen member 70 is placed in the same position as the screen member 50.

[0037] As shown in Figure 12, the screen member 70 is constructed by arranging a plurality of vertical members 71 at equal intervals. Each vertical member 71 comprises an upper member 74, a connecting member 75, and a lower member 76. As shown in Figure 13, the upper member 74 has a diameter D1, which is larger than the diameter D2 of the lower member 76. The upper member 74 and the lower member 76 have a length that overlaps the lower end of the upper member 74 and the upper end of the lower member 76, and they are fixed together at this overlapping portion via a connecting member 75. In this case, by making the size of the gap between each vertical member 71 larger than the larger diameter D1, the opening on the front (front side) of the recessed area A2 is made to be 1 / 2 or more. If the opening on the front (front side) of the recessed area A2 is 1 / 2 or more, the size of the gap between the vertical members 71 of the screen member may be made smaller than the diameter D1 of the upper member 74. Therefore, as shown in Figures 10 and 11, the screen member 70 can create a blind-like design in the recessed area A2 outdoors, and can also suppress sunlight from a high position.

[0038] In the above embodiment, the screen member 50 is placed next to the outdoor staircase 40. The screen member 50 may also be placed in a position slightly in front of the outdoor staircase 40. Furthermore, the screen member 50 is not limited to being arranged in a single row; it may be arranged in multiple rows with some overlap, or it may be arranged in a curved shape.

[0039] Furthermore, although the screen member 50 is positioned to cover the outside of the outdoor staircase 40, it may also be positioned further forward (towards the end of the floor slab where the transparent wall member G1 is placed), at a distance from the outdoor staircase 40. In this case, it is preferable to provide a handrail on the outside of the outdoor staircase 40.

[0040] In the above embodiment, the indoor portion A1 is positioned in the center and the recessed area A2 is provided on the right side. The arrangement of the recessed area where the outdoor stairs are provided is not limited to this. For example, the indoor portion A1 may be positioned on the right side and the recessed area on the left side. Furthermore, if multiple outdoor stairs are provided, the indoor portion may be positioned in the center and the recessed areas may be provided on both sides thereof.

[0041] Next, the technical concepts that can be understood from the above embodiments and alternative examples are described below. (a) The building according to claim 1 or 2, wherein an opening is formed in the floor slab of the floor directly above for the outdoor staircase to connect to the floor directly above, and the screen member comprises a portion in which a plurality of vertical members are spaced apart and pass through the opening. (b) The building according to (a), characterized in that the screen member is arranged along the outside of the outdoor staircase. [Explanation of Symbols]

[0042] A1...Indoor area, A2...Recessed area, G1...Transparent wall member, h1...Opening, K1...Coping, L1...Spacing, S1...Concealing member, T1...Terrace, 10...Building, 21,22,23,24...Columns, 25...Beams, 26...Ceiling member, 27...Floor slab, 28...Floor surface member, 29...Side wall member, 29a...Side section, 29b...Eaves section, 29g...Notch section, 30a,30b...Fixing members 31, 38...exterior wall section, 32, 34, 36, 37...wall section, 32a, 32b...opening, 40...outdoor staircase, 41a, 41b...staircase section, 42...landing, 43, 46a, 46b...handrail, 43a...hanging bar, 45...counter, 50, 70...screen member, 51, 52...round bar as vertical member, 71...vertical member, 74...upper member, 75...connecting member, 76...lower member.

Claims

1. An exterior part having an outdoor recessed area and an indoor wall surface separated from it by a wall, The recessed area includes an outdoor staircase that extends from the target floor to the floor directly above, In the recessed region, a screen member is provided on the exterior side of the outdoor staircase, with a plurality of vertical members spaced apart from each other. The building is characterized in that the vertical members are configured by connecting an upper member of the vertical member on the target floor with a lower member having a smaller diameter than the upper member.

2. The building according to claim 1, characterized in that the exterior portion is made of a transparent material.

3. The building according to claim 1 or 2, characterized in that the vertical members are made of cylindrical members.

4. A landing is provided in the middle of the staircase leading from the aforementioned target floor to the floor directly above. The building according to claim 1 or 2, characterized in that the height of the landing is set to a height closer to the floor of the target floor than the ceiling of the target floor.

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