JP7097252B2 - building - Google Patents

Description

The present invention relates to a multi-story building that has a polygonal outer shape in a plan view and receives wind from a predetermined direction.

In recent years, with the progress of urbanization, the heat island phenomenon has become prominent in urban areas. As one of the measures to mitigate the heat island phenomenon, for example, in urban areas along the coast, it is important to secure a so-called wind path so that the flow of sea breeze that blows inland from the sea is not blocked by buildings. be. Further, in urban areas, gusts called building winds are likely to occur due to the concentration of high-rise buildings, and improvement of the wind environment (wind damage) is required.

For example, Patent Document 1 discloses a high-rise building that constitutes a building structure by stacking blocks having a stairwell space in a grid shape in order to suppress the generation of building wind and improve ventilation. ..

Japanese Unexamined Patent Publication No. 6-173473

However, the high-rise building disclosed in Patent Document 1 has a problem that the atrium space cannot be used as a living room space because the wind flows inside the atrium space, and the living room space is limited. Further, since the high-rise building disclosed in Patent Document 1 constitutes the structure of the building by stacking blocks, it is difficult to apply it to other building structures, and the building structure is limited. There was a problem.

It is an object of the present invention to provide a building capable of relaxing the restrictions on the living room space and the building structure, securing the wind path, and improving the wind environment in order to solve the above problems.

The present invention solves the above-mentioned problems, and the building according to the embodiment of the present invention is
A multi-story building that has a polygonal outer shape in a plan view and receives wind from a predetermined direction.
A plurality of side walls corresponding to each side of the polygon, and
With a plurality of corners corresponding to each vertex of the polygon,
The plurality of corners are
The windward corners arranged on the windward side of the wind,
The leeward corners arranged on the leeward side of the wind,
It is characterized by including a corner cut corner portion cut into a corner in the height direction of the building with respect to the corner portion excluding the windward side corner portion and the leeward side corner portion.

Further, the building according to the embodiment of the present invention is
A plurality of air conditioning portions extending in a convex shape along the outer peripheral direction of the building with respect to the side wall portion and the corner portion are provided.
The plurality of wind regulating portions are characterized in that they are arranged side by side at predetermined intervals in the height direction of the building.

Further, the building according to the embodiment of the present invention is
The step of the air conditioning portion extended to the corner portion with respect to the corner portion is larger than the step of the wind regulating portion extended to the side wall portion with respect to the side wall portion.

Further, the building according to the embodiment of the present invention is
The wind regulating portion is characterized by having a rectangular cross-sectional shape as a cross-sectional shape perpendicular to the outer peripheral direction of the building.

Further, the building according to the embodiment of the present invention is
The wind regulating portion is characterized by including a draining portion formed on the lower surface of the wind regulating portion.

According to the building according to the embodiment of the present invention, the plurality of corners are the height of the building with respect to the windward corner portion, the leeward side corner portion, and the corner portion excluding the windward side corner portion and the leeward side corner portion. Includes corner cut corners cut in the vertical direction. Therefore, when the building receives wind from a predetermined direction, the wind is diverted into two directions by the windward corner, and the diverted wind is diverted along the side wall to the corner cut corner and the leeward side. Pass through each corner in order and join on the leeward side of Building 1. At this time, since the corners are cut in the height direction of the building, it is difficult for the wind to deviate from the corners, so that the air resistance when the wind passes through the corners is reduced. Will be done. Further, in order for the building to have a plurality of corners as described above, the living space and the building structure of the building are not significantly restricted. Therefore, the building can be regarded as a streamlined shape in a plan view by providing a plurality of corners as described above without significantly limiting the living space and the building structure. It is possible to relax the restrictions on the structure, secure the wind path, and improve the wind environment.

It is a perspective view which shows the building 1 which concerns on 1st Embodiment of this invention. It is a vertical sectional view which shows the building 1 which concerns on 1st Embodiment of this invention. FIG. 5 is a sectional view taken along line AA showing the building 1 according to the first embodiment of the present invention. The air conditioning part 5 which concerns on the 1st Embodiment of this invention is shown, (a) is a 1st Example, (b) is a 2nd Example, (c) is a 3rd Example, (d). Is an enlarged sectional view taken along the line B showing a fourth embodiment. The building 1 which concerns on the 2nd Embodiment of this invention is shown, (a) is the 1st Example, (b) is the AA line sectional view which shows the 2nd Example.

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

(First Embodiment)
FIG. 1 is a perspective view showing a building 1 according to the first embodiment of the present invention. FIG. 2 is a vertical sectional view showing a building 1 according to the first embodiment of the present invention. FIG. 3 is a sectional view taken along line AA showing the building 1 according to the first embodiment of the present invention.

The building 1 is a multi-story building having a plurality of floors, and is used for, for example, an apartment building such as a tower apartment, an office building, a hotel, a commercial facility building, or the like. Further, for the building 1, for example, a building structure such as a reinforced concrete structure, a steel frame structure, a steel frame reinforced concrete structure, or a precast concrete structure is adopted.

Building 1 receives wind W from a predetermined direction. The "predetermined direction" indicates a wind direction in which the wind W blows for a long time or frequently in the site where the building 1 is constructed, that is, a main wind direction. For example, when the building 1 is constructed on a site along the coast where the sea is located on the south side, the building 1 is predetermined because the time zone in which the south wind blows from the sea is received is long or frequent. As for the direction, "south" corresponds. At this time, the building 1 receives the wind W from the south as a predetermined direction, but does not indicate that the building 1 does not receive the wind from any direction other than the south.

The building 1 has a polygonal outer shape in a plan view, and has a plurality of side wall portions 2 corresponding to each side of the polygon, a plurality of corner portions 3 corresponding to each vertex of the square shape, and the inside of the side wall portion 2. It is provided with a plurality of floor portions 4 for partitioning each floor.

Note that FIG. 1 shows the shape of the outer shape of the building 1, and details of other components (for example, windows, balconies, etc.) are omitted. Further, FIGS. 2 and 3 show cross sections of the side wall portion 2, the corner portion 3 and the floor portion 4, and other components (for example, windows, balconies, steel frames, reinforcing bars, partition walls, columns, beams, etc.). Details of stairs, elevators, etc.) are omitted.

The side wall portion 2 and the corner portion 3 are made of, for example, a concrete wall, an outer wall material such as an ALC plate or a tile.

The plurality of corners 3 include a windward corner portion 30 arranged on the windward side of the wind W, a leeward side corner portion 31 arranged on the leeward side of the wind W, and a windward side corner portion 30 and a leeward side corner portion 31. Includes corner cutting corners 32A and 32B, which are cornered in the height direction of the building 1 with respect to the corner portion 3 excluding.

Here, the "polygon" is a convex polygon in which all internal angles are less than 180 degrees. In this embodiment, the case of a square will be described as an example of a polygon. Therefore, the side wall portion 2 corresponds to the four sides of the square. Further, since the plurality of corners 3 correspond to each of the four vertices of the square, the building 1 includes the four corners 3, and the four corners 3 have the wind-up corner 30 and the leeward. A side corner portion 31 and two corner cutting corner portions 32A and 32B are included.

The corner cut corner portions 32A and 32B are corner cuts in the shape of a right-angled isosceles triangle. The corner cutting corners 32A and 32B may be cornered in the shape of a right triangle having two sides having different lengths sandwiching the right angle portion.

Further, the building 1 includes a plurality of air conditioning portions 5 extending in a convex shape along the outer peripheral direction of the building 1 with respect to the side wall portions 2 and the corner portions 3. The plurality of wind regulating portions 5 are arranged side by side at a predetermined interval H1 in the height direction of the building 1.

In the present embodiment, as shown in FIGS. 1 and 2, a plurality of air conditioning portions 5 are provided on each floor one by one, and are arranged side by side at intervals corresponding to the floor height as a predetermined interval H1. It should be noted that a plurality of air conditioning units 5 may be provided on each floor, or one air conditioning unit 5 may be provided on a plurality of floors. Further, the predetermined interval H1 may be changed according to the height direction of the building 1, the interval on the upper floors may be wider than the interval on the lower floors, or vice versa. ..

The wind regulating portion 5 extends in a convex shape along the outer peripheral direction of the building 1, and the convex portion forms a step with respect to the side wall portion 2. In the present embodiment, as shown in FIG. 3, the step L1 with respect to the corner portion 3 of the air conditioning portion 5 extended to the corner portion 3 is the step with respect to the side wall portion 2 of the wind regulating portion 5 extending to the side wall portion 2. It is equal to L2. Therefore, the wind regulating portion 5 is extended so that the step of the convex portion becomes constant ((L1 = L2)) along the outer peripheral direction of the building 1.

In the present embodiment, the steps L1 and L2 of the air conditioning portion 5 are set to, for example, 100 mm, and the height H2 is set to, for example, 100 mm, but these dimensions may be appropriately changed. Further, the steps L1, L2 and the height H2 of the wind regulating portion 5 may be changed according to the height direction of the building 1, and the steps L1, L2 and the height H2 of the wind regulating portion 5 on the upper floor may be changed to the lower floor. It may be larger than the steps L1 and L2 and the height H2 of the air conditioning portion 5 in the above, and vice versa.

The wind regulating portion 5 is integrally formed with the concrete wall and the outer wall material constituting the side wall portion 2 and the corner portion 3. The wind regulating portion 5 may be formed of a member separate from the side wall portion 2 and the corner portion 3 and may be attached to the side wall portion 2 and the corner portion 3.

FIG. 4 shows the air conditioning unit 5 according to the first embodiment of the present invention, (a) is the first embodiment, (b) is the second embodiment, and (c) is the third embodiment. , (D) is an enlarged cross-sectional view taken along the line B showing the fourth embodiment.

The wind regulating portion 5 is extended in a convex shape along the outer peripheral direction of the building 1, and has a cross-sectional shape perpendicular to the outer peripheral direction of the building 1 as in the first embodiment shown in FIG. 4A. It has a rectangular cross-sectional shape. That is, the wind regulating portion 5 includes an upper surface 50, a side surface 51, and a lower surface 52 constituting a convex shape, and the upper surface 50 and the lower surface 52 are arranged in the horizontal direction, and the side surface 51 is arranged in the vertical direction (height direction). To. Further, the wind regulating portion 5 includes a draining portion 53 formed on the lower surface 52.

The wind regulating portion 5 may have a trapezoidal cross-sectional shape as shown in FIGS. 4 (b) and 4 (c) and (d) instead of the rectangular cross-sectional shape.

In the wind regulating portion 5 of the second embodiment shown in FIG. 4B, the upper surface 50 is arranged in the horizontal direction, and the lower surface 52 is arranged diagonally upward so as to move upward from the side wall portion 2 with respect to the horizontal direction. , The side surface 51 is arranged in the vertical direction.

In the wind regulating portion 5 of the third embodiment shown in FIG. 4 (c), the upper surface 50 is arranged diagonally downward toward the lower side toward the side wall portion 2 with respect to the horizontal direction, and the lower surface 52 is arranged in the horizontal direction. , The side surface 51 is arranged in the vertical direction.

In the wind regulating portion 5 of the fourth embodiment shown in FIG. 4D, the upper surface 50 is arranged diagonally downward so as to be farther from the side wall portion 2 in the horizontal direction, and the lower surface 52 is arranged in the horizontal direction. The side surface 51 is arranged in the vertical direction so as to be arranged diagonally upward so as to be farther from the side wall portion 2.

The cross-sectional shape of the wind regulating portion 5 is not limited to the above embodiment, and the side surface 51 may be arranged in an oblique direction with respect to the vertical direction, or at least one of the upper surface 50, the side surface 51, and the lower surface 52 may be arranged. It may be arranged in a curved shape.

(Evaluation by simulation)
Next, a simulation was performed to evaluate the performance of the building 1. The simulation conditions and results will be described below.

The building 1 to be evaluated is a rectangle with an outer shape of 44.2 m × 34.4 m, a height of 117.65 m, and is 32 stories above the ground with 31 wind control sections 5 arranged side by side on each floor. And said. As the wind inflow condition, 5.1 m / s at 44 m above the ground was converted into a wind speed at a height of 50 m above the ground according to the power law (ground surface roughness classification IV).

As an evaluation method, when the hinterland evaluation area located on the leeward side of the building 1 is set to an area where the width is 1 times the width of the site and the depth is twice the height of the building 1, the hinterland evaluation is performed. The evaluation was made by calculating the ratio (%) of the area of the area where the wind velocity is 1.5 m / s or more to the area of the area.

As an evaluation result of the simulation,
(1) 74.5% when the corner cutting corners 32A and 32B are "none" and the air conditioning portion 5 is "none".
(2) When the corner cutting corners 32A and 32B are "yes" and the air conditioning part 5 is "no", 77.6%.
(3) When the corner cutting corners 32A and 32B are "yes" and the air conditioning part 5 is "yes", 78.9%.
Met.

Therefore, comparing (1) and (2) above, the wind speed is 1.5 m in the hinterland evaluation area located on the leeward side of the building 1 because the building 1 is provided with the corner cutting corners 32A and 32B. It was found that the area of the area above / s increased by 3.1%.

Further, comparing the above (1) and (3), the building 1 is provided with the corner cutting corner portions 32A and 32B and the wind control portion 5, so that the building 1 is located in the hinterland evaluation area located on the leeward side of the building 1. It was found that the area of the area where the wind speed is 1.5 m / s or more increases by 4.4%. Further, comparing (2) and (3) above, the building 1 is further provided with not only the corner cutting corners 32A and 32B but also the wind control section 5, so that the hinterland evaluation located on the leeward side of the building 1 is evaluated. In the area, it was found that the area of the area where the wind speed is 1.5 m / s or more increases by 1.3%.

(Second embodiment)
In the first embodiment, as shown in FIG. 3, the step of the convex portion of the wind regulating portion 5 is constant with respect to the side wall portion 2 and the corner portion 3 along the outer peripheral direction of the building 1 (L1 = L2). However, in the second embodiment, the step of the convex portion of the wind regulating portion 5 is different between the side wall portion 2 and the corner portion 3. Since the other configurations of the second embodiment are the same as those of the first embodiment, the description thereof will be omitted.

5A and 5B show a building 1 according to a second embodiment of the present invention, where FIG. 5A is a sectional view taken along line AA showing a first embodiment and FIG. 5B is a second embodiment.

In the first embodiment shown in FIG. 5A, the step L3 with respect to the two corner cut corners 32A and 32B of the wind regulating portion 5 extended to the two corner cut corners 32A and 32B is formed on the side wall portion 2. It is larger than the step L5 with respect to the side wall portion 2 of the extended air conditioning portion 5. Further, the step L4 with respect to the leeward side corner portion 30 and the leeward side corner portion 31 of the windward adjusting portion 5 extending to the leeward side corner portion 30 and the leeward side corner portion 31 is the air conditioning portion 5 extending to the side wall portion 2. It is larger than the step L5 with respect to the side wall portion 2.

In the present embodiment, the step L3 with respect to the two corner cut corners 32A and 32B of the wind control portion 5 and the step L4 with respect to the windward side corner portion 30 and the leeward side corner portion 31 of the wind control portion 5 are set to, for example, 500 mm. The step L5 with respect to the side wall portion 2 of the wind control portion 5 is, for example, 100 mm, but these dimensions may be appropriately changed. Further, the dimensions of the step L3 and the step L4 may be different.

In addition, the corner portion 3 of the building 1 according to the present embodiment has the corner portion 3 of the building 1 according to the first embodiment in order to make the step L3 and the step L4 of the wind regulating portion 5 larger than the step L5. In comparison, it is formed so as to be cut out inside the building 1, but instead of forming the corner portion 3 so as to be cut out inside the building 1, the convex portion of the air conditioning portion 5 is formed outside the building 1. It may be formed so as to overhang.

In the wind regulating portion 5 of the second embodiment shown in FIG. 5 (b), the two corner cut corner portions 32A and 32B are corner cuts in a curved shape. The wind regulating portion 5 is extended in a curved shape along the curved outer shape of the two corner cutting corner portions 32A and 32B.

Further, the step L6 with respect to the two corner cut corners 32A and 32B of the air conditioning portion 5 extended to the two corner cut corners 32A and 32B is relative to the side wall portion 2 of the wind regulating portion 5 extended to the side wall portion 2. It is larger than the step L7. In the present embodiment, the step L6 with respect to the two corner cutting corners 32A and 32B of the air conditioning portion 5 is, for example, 500 mm, and the step L7 with respect to the side wall portion 2 of the wind regulating portion 5 is, for example, 100 mm. The dimensions may be changed as appropriate.

As described above, according to the building 1 according to the first and second embodiments, the plurality of corner portions 3 include the windward side corner portion 30, the leeward side corner portion 31, the leeward side corner portion 30, and the leeward side. The corners 32A and 32B, which are corners cut in the height direction of the building 1 with respect to the corners 3 excluding the side corners 31, are included.

Therefore, when the building 1 receives the wind W from a predetermined direction, the wind W is divided into the winds Wa and Wb in two directions by the windward corner portion 30, and the divided winds Wa and Wb are divided into the side wall portions. It passes through the corner cut corners 32A and 32B and the leeward side corner 31 in this order along 2, and merges on the leeward side of the building 1 to form a wind Wc. At this time, since the corner cutting corners 32A and 32B are cornered in the height direction of the building 1, the winds Wa and Wb are less likely to deviate from the corner cutting corners 32A and 32B, and the winds Wa and Wb are corners. The air resistance when passing through the cutting angle portions 32A and 32B is reduced. Further, since the building 1 is provided with the plurality of corner portions 3 as described above, the living space and the building structure of the building 1 are not significantly restricted.

Therefore, the building 1 can be regarded as a streamlined shape in a plan view by providing the plurality of corners 3 as described above without significantly limiting the living space and the building structure. It is possible to relax restrictions on space and building structures, secure wind paths, and improve the wind environment.

Further, according to the building 1 according to the first and second embodiments, the plurality of air conditioning portions 5 are extended in a convex shape along the outer peripheral direction of the building 1 with respect to the side wall portions 2 and the corner portions 3. They are arranged side by side at predetermined intervals in the height direction of the building 1. Therefore, the wind regulating portion 5 adjacent to the height direction of the building 1 serves as a guiding means for guiding the flow of the wind W, and the intermediate portion of the wind regulating portion 5 adjacent to the height direction of the building 1 is the flow of the wind W. Since it becomes a road, the wind W flows from the wind upper side to the leeward side along the outer peripheral direction of the building 1, that is, in the horizontal direction. Therefore, the building 1 is provided with a plurality of wind control portions 5 as described above without significantly limiting the living space and the building structure, so that the wind W flows horizontally from the windward side to the leeward side. Since it is possible to suppress the generation of wind blown down along the side wall portion 2, restrictions on the living room space and the building structure can be relaxed, a wind path can be secured, and the wind environment can be improved.

Further, according to the building 1 according to the second embodiment, the step on the corner portion 3 of the wind regulating portion 5 extended to the corner portion 3 is the side wall portion 2 of the wind regulating portion 5 extending to the side wall portion 2. Greater than the step against. Therefore, since the wind W is guided to flow in the horizontal direction at the corner portion 3, restrictions on the living room space and the building structure can be relaxed, the wind path can be secured, and the wind environment can be improved.

Further, according to the building 1 according to the first and second embodiments, the wind regulating portion 5 has a rectangular cross-sectional shape as a cross-sectional shape perpendicular to the outer peripheral direction of the building 1. Therefore, since the wind regulating portion 5 can be formed by a simple method, it is possible to suppress an increase in the construction cost of the building 1.

Further, according to the building 1 according to the first and second embodiments, the air conditioning unit 5 includes a draining unit 53 on the lower surface 52 of the air conditioning unit 5. Therefore, since the draining portion 53 suppresses the dripping of rainwater adhering to the wind regulating portion 5, it is possible to prevent the side wall portion 2 and the corner portion 3 from becoming dirty.

Although the first and second embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the technical idea of the present invention. be.

1 ... Building 2 ... Side wall 3 ... Corner 4 ... Floor 5 ... Windward 30 ... Windward corner 31 ... Downwind corner 32A ... Corner Cutting angle portion 32B ... Corner cutting angle portion 50 ... Top surface 51 ... Side surface 52 ... Bottom surface 53 ... Draining portion

Claims (4)

A multi-story building that has a polygonal outer shape in a plan view and receives wind from a predetermined direction.
A plurality of side walls corresponding to each side of the polygon, and
A plurality of corners corresponding to each vertex of the polygon,
A plurality of wind regulating portions extending in a convex shape along the outer peripheral direction of the building with respect to the side wall portion and the corner portion are provided.
The plurality of corners are
The windward corners arranged on the windward side of the wind,
The leeward corners arranged on the leeward side of the wind,
Includes a corner cut corner cut in the height direction of the building with respect to the corner portion excluding the windward side corner portion and the leeward side corner portion.
The plurality of wind regulating portions are arranged side by side at predetermined intervals in the height direction of the building.
A building that features that. The step of the air conditioning portion extended to the corner portion with respect to the corner portion is larger than the step of the wind regulating portion extended to the side wall portion with respect to the side wall portion.
The building according to claim 1 , characterized in that. The wind regulating portion has a rectangular cross-sectional shape as a cross-sectional shape perpendicular to the outer peripheral direction of the building.
The building according to claim 1 or 2 , characterized in that. The wind regulating portion includes a draining portion formed on the lower surface of the wind regulating portion.
The building according to any one of claims 1 to 3 , characterized in that.

Images