Building

Abstract

To provide a building capable of reducing wind loads acting on fins.SOLUTION: A building 1 includes an outer wall surface 3 forming an external appearance of the building 1 having a projected corner portion 2 extending in the vertical direction, and a plurality of fins 4 arranged in parallel with each other at intervals in the horizontal direction with respect to the outer wall surface 3. The fin 4 has a tip portion 40 provided at a position away from the outer wall surface 3 and a pair of side surface portions 41 provided on both sides of the tip portion 40. The side surface portion 41 near the projected corner portion 2 of the fin 4 provided near the projected corner portion 2 is formed into a concave curved surface shape.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a building.

Background Art

[0002] Conventionally, for various purposes such as shielding solar radiation entering a building or configuring the exterior design of a building, a plurality of fins have been arranged on the outer wall of the building. For example, Patent Document 1 discloses an exterior system in which a plurality of fins are extended vertically on the outdoor side of the outer wall and arranged at a predetermined pitch with respect to the horizontal direction of the outer wall.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, it is disclosed that the performance evaluation of an exterior system having fins is carried out by evaluating the air conditioning load according to the presence or absence of fins and the magnitude of the pitch. Since the fins have a protruding shape that projects vertically from the outer wall, when performing the performance evaluation of the fins, it is required to consider not only from the viewpoint of reducing the heat load but also from the viewpoint of the wind load acting on the fins.

[0005] Specifically, wind pressure acts on both side surfaces of the fins attached so as to project vertically from the outer wall of the building, but the wind pressure changes due to the change in the wind flow affected by the shape and installation position of the fins. Therefore, in the wind-resistant design of the fins, the peak wind force coefficient C^ is considered with respect to the wind load (0.5ρU 2 A [N]) based on the air density ρ, the design wind speed U, and the load area A, so as to perform the wind-resistant design (0.5ρU f C^ 2 C^ fA[N] is performed. At this time, for the fins attached to the outer wall of the building, the peak wind force coefficient C^ f is known from past research to have an absolute value of up to 5 to 7 at maximum. However, when performing wind resistance design of the fins based on such wind loads, the cost for realizing the strength of the fins increases accordingly.

[0006] The present invention has been made in view of such circumstances, and an object thereof is to provide a building capable of reducing the wind load acting on the fins.

Means for Solving the Problems

[0007] The present invention solves the above problems, and a building according to an embodiment of the present invention includes an outer wall surface constituting the appearance of the building having a protruding corner portion extending in the vertical direction, and a plurality of fins arranged in parallel at intervals in the horizontal direction with respect to the outer wall surface. The fins have a tip portion disposed at a position away from the outer wall surface, and a pair of side portions respectively disposed on both sides of the tip portion. The side portion near the protruding corner portion of the fin provided near the protruding corner portion is formed in a concave curved surface shape.

Effects of the Invention

[0008] According to the building according to an embodiment of the present invention, the side portion near the protruding corner portion of the fin provided near the protruding corner portion of the building is formed in a concave curved surface shape. Thereby, when the building receives wind from a predetermined direction, the wind flows along the concave curved surface shape, so that the wind load acting on the fins can be reduced.

[0009] Problems, configurations, and effects other than the above will be clarified in the form for carrying out the invention described later.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0011] Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

[0012] FIG. 1 is a perspective view showing an example of the building 1 according to the embodiment. FIG. 2 is a cross-sectional view showing an example of the building 1 according to the embodiment.

[0013] The building 1 is a multi-story building 1 having a plurality of floors, and is used, for example, for purposes such as apartment buildings, office buildings, hotels, and commercial facility buildings. Further, the building 1 employs an arbitrary building structure such as a reinforced concrete structure, a steel frame structure, a steel frame reinforced concrete structure, or a precast concrete structure.

[0014] The building 1 includes an outer wall surface 3 that constitutes the appearance of the building 1 having an external corner portion 2 extending in the vertical direction, and a plurality of fins 4 arranged in parallel at intervals in the horizontal direction with respect to the outer wall surface 3. Note that FIG. 1 simply shows the appearance of the building 1, and details of other components (for example, windows, balconies, etc.) are omitted. Further, FIG. 2 mainly shows the cross-section of the building body and the outer wall of the building 1, and details of other components (for example, windows, balconies, steel frames, steel bars, partition walls, columns, beams, stairs, elevators, etc.) are omitted.

[0015] The exterior appearance of Building 1 is formed in a substantially polygonal shape, for example, in plan view or cross-sectional view. The protruding corner portion 2 is arranged at a portion corresponding to each vertex of the polygon, and the outer wall surface 3 is arranged at a portion corresponding to each side of the polygon. In the present embodiment, as an example of the polygon, as shown in FIG. 2, the case of a square will be described.

[0016] The outer wall surface 3 is composed of, for example, an outer wall material such as a concrete wall, a ceramic siding, a metal siding, a resin siding, an ALC board, or tiles.

[0017] The fins 4 are attached to the outer wall surface 3 mainly for the purpose of reducing the heat load of the indoor space and enhancing the design of Building 1, but are not limited to these purposes. The fins 4 extend along the outer wall surface 3 such that the longitudinal direction is the vertical direction. At this time, the lower end of the fin 4 may be located on the ground floor or on a floor above the ground floor. The upper end of the fin 4 may be located on the top floor or on a floor below the top floor. Also, when arranging the fins 4 in parallel, the horizontal interval is preferably equal, but may not be equal, or may vary depending on the direction of the outer wall surface 3.

[0018] The fins 4 are formed of, for example, a member separate from the concrete wall or outer wall material constituting the outer wall surface 3 and are attached to the concrete wall or outer wall material. The fins 4 are made of an arbitrary material such as resin or metal and are constituted by combining, for example, a plurality of members divided in the longitudinal direction. Note that the fins 4 may be formed in a hollow shape.

[0019] (Specific configuration of fins) FIG. 3 is an enlarged cross-sectional view showing an example of the fin 4 according to the embodiment.

[0020] The plurality of fins 4 are arranged at a predetermined installation interval P with respect to the outer wall surface 3 and each have a tip portion 40 arranged at a position away from the outer wall surface 3 and a pair of side portions 41 arranged on both sides of the tip portion 40. The installation interval P of the fins 4 is appropriately set according to various conditions such as the dimensions and shape of Building 1.

[0021] The tip portions 40 each of the plurality of fins 4 are formed in a planar shape having a predetermined dimension S. The dimension S of the tip portion 40 is appropriately set according to various conditions such as the dimensions and shape of the building 1. Note that the tip portion 40 is not limited to a planar shape and may be a rounded curved surface shape.

[0022] A pair of side portions 41 each of the plurality of fins 4 are formed in a concave curved surface shape that is recessed toward the inside of the building 1. The concave curved surface shape is defined, for example, by a curvature C = (1 / W) determined by the reciprocal of the fin protrusion width W when the dimension from the outer wall surface 3 to the tip portion 40 is taken as the fin protrusion width W. The fin protrusion width W is appropriately set according to various conditions such as the dimensions and shape of the building 1. Note that the curvature C of the curved surface shape may be appropriately changed other than in the above example, or may be a combination of a plurality of curved surface shapes having different curvatures C. Also, in the present embodiment, in all of the fins 4, as shown in FIG. 3, the curvature C of the curved surface shape is described as being the same, but the curvature C of the curved surface shape may be appropriately changed in units of the fins 4 or in units of the outer wall surface 3.

[0023] Further, the concave curved surface shape is commonly formed with respect to the side portions 41 near the corner portion 2 of the pair of fins 4A and 4B provided with the corner portion 2 interposed therebetween. That is, the side portion 41 near the corner portion 2 of the fin 4A and the side portion 41 near the corner portion 2 of the fin 4B are formed as a common curved surface shape. Thereby, since the pair of fins 4A and 4B provided with the corner portion 2 interposed therebetween have a common curved surface shape formed by a single side portion 41, the pair of fins 4A and 4B can be configured with a simple structure.

[0024] (Modification example of the fin) FIG. 4 is an enlarged cross-sectional view showing the fins 4 according to the modified example. The fins 4 according to the modified example have their arrangement changed as compared with the example of FIG. 3. Specifically, fins 4A and 4B provided near the corner portion 2 are arranged with a distance L from the corner portion 2 to the tip portion 40. In the example of FIG. 4, the distance L is set equal to the fin width W, and the curvature C of the curved surface shape on the side surface portion 41 is determined to be equal to the reciprocal (1 / W) of the fin width W.

[0025] As described above, according to the building 1 according to the present embodiment, the side surface portions 41 near the corner portion 2 of the fins 4A and 4B provided near the corner portion 2 of the building 1 are formed in a concave curved surface shape. Thereby, when the building 1 receives wind from a predetermined direction, the wind flows along the concave curved surface shape, so that the wind load acting on the fins 4A and 4B can be reduced.

[0026] Also, with respect to the side surface portions 41 of the other fins 4 other than the fins 4A and 4B provided near the corner portion 2 of the building 1, by forming them in a concave curved surface shape, the wind load acting on the fins 4 can be reduced.

[0027] (Other Embodiments) Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be appropriately changed without departing from the technical idea of the present invention.

Explanation of Reference Numerals

[0028] 1... Building, 2... Corner portion, 3... Outer wall surface, 4, 4A, 4B... Fins, 40... Tip portion, 41... Side surface portion

Claims

1. An outer wall surface constituting the appearance of a building having an outward corner portion extending in the vertical direction, and a plurality of fins arranged in parallel at intervals in the horizontal direction with respect to the outer wall surface, wherein the fin has a tip portion disposed at a position away from the outer wall surface, and a pair of side portions respectively disposed on both sides of the tip portion, wherein the side portion near the outward corner portion of the fin provided in contact with the outward corner portion is formed in a concave curved surface shape, a building.

2. An outer wall surface constituting the appearance of a building having an outward corner portion extending in the vertical direction, and a plurality of fins arranged in parallel at intervals in the horizontal direction with respect to the outer wall surface, wherein the fin has a tip portion disposed at a position away from the outer wall surface, and a pair of side portions respectively disposed on both sides of the tip portion, wherein the side portion near the outward corner portion of the fin provided near the outward corner portion is formed in a concave curved surface shape, wherein the curved surface shape is commonly formed with respect to the side portions near the outward corner portion respectively of a pair of the fins provided with the outward corner portion therebetween, a building.

3. An outer wall surface constituting the appearance of a building having an outward corner portion extending in the vertical direction, and a plurality of fins arranged in parallel at intervals in the horizontal direction with respect to the outer wall surface, wherein the fin has a tip portion disposed at a position away from the outer wall surface, and a pair of side portions respectively disposed on both sides of the tip portion, wherein the side portion near the outward corner portion of the fin provided near the outward corner portion is formed in a concave curved surface shape, wherein the curvature of the curved surface shape is determined by the reciprocal of the fin protrusion width when the dimension from the outer wall surface to the tip portion is defined as the fin protrusion width, a building.

4. A pair of the side portions respectively of the plurality of fins are each formed in the curved surface shape, a building according to any one of Claims 1 to 3.

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