JPH04357283A - Building - Google Patents

Abstract

PURPOSE:To prevent the vibration of a building to be caused by wind by providing a wind quantity control means for changing the opening area of an opening part at the opening part, where a wind hole passing through a building nearly horizontally is formed. CONSTITUTION:Louvers 4, 4 are provided in side surfaces of a building 1. At this stage, the louver 4 consists of multiple number of blades 6, 6, which are provided around of a horizontal shaft 5 freely to turn. In the case that the wind pressure is small, an open degree of the louver 4 is small to restrict the wind quantity to be led into an opening part 2. On the other hand, in the case that the wind pressure is large, each blade 6 is pushed up by the wind pressure to make an open degree of the louver 4 large, and a large quantity of the wind is made to escape from the opening 2. Vibration of a building to be caused by the wind is thereby reduced under any condition from the time of weak wind to the time of strong wind.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to buildings, and in particular,
This invention relates to buildings with ventilation holes to prevent shaking caused by wind.

0002

2. Description of the Related Art It is already known that providing ventilation holes in buildings, especially high-rise buildings, is effective against wind swaying of the building, and some buildings have already adopted this method. This air hole is usually formed so as to penetrate the building in a substantially horizontal direction, taking into account the wind direction and the like.

0003

[Problem to be solved by the invention] According to the above building,
Although it has the advantage of being able to obtain a high wind sway prevention effect particularly against strong winds and high wind pressure, it has the following problems. FIG. 9 is a graph schematically showing the experimental results regarding the difference in wind-induced sway between the same building with wind vents (diagram A) and those without (diagram B). In other words, as can be seen from this graph, in strong wind areas with high wind pressure, wind holes can greatly reduce the shaking of buildings (approximately 1/10 of that of buildings without air holes), but in weak wind areas with low wind pressure, On the contrary, there may be an adverse effect that those with air holes may cause stronger shaking.

The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a building that can effectively prevent wind sway not only in strong winds but also in weak winds. .

[0005]

[Means for solving the problem] The invention according to claim 1 is:
In a building having an air hole extending almost horizontally through the building at an arbitrary position in the building in order to prevent shaking due to wind, an air volume control for changing the opening area of the opening forming the air hole is provided. It is characterized by providing means.

The invention according to claim 2 is the building according to claim 1, in which the air volume control means includes a louver that completely closes the opening in the closed state and opens the entire cross section of the opening in the open state. It is characterized by being constructed by.

The invention according to claim 3 is the building according to claim 2, in which the louver is in a closed state when no wind pressure is applied to the louver, and when an amount of wind pressure is applied to the louver, the wind pressure is closed. The structure is such that it is in an open state.

[0008] The invention according to claim 4 is the building according to claim 2, characterized in that the louver is configured to be opened and closed by a driving means.

[0009]

[Operation] In the building according to the first aspect, it is possible to control the amount of air introduced into the air hole. In the building according to the second aspect, the air volume control means can be configured with a simple mechanism at low cost. In the building according to the third aspect, the air volume control means (louver) can be opened and closed according to the strength of wind power without using any driving means. In the building according to the fourth aspect, by actively controlling the louver, wind swaying of the building can be suppressed to the most effective state depending on the wind condition.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 respectively show a front view and a side sectional view of a building 1 according to the present invention. The building 1 is a high-rise building and has a rectangular horizontal cross section. A tunnel-shaped opening (wind hole) 2 is formed in the upper half of the building 1 and penetrates the building with a rectangular cross section in one direction. In this case, the opening 2 has a rectangular cross section as shown in the figure, and for example, its width is one-half or more of the width of the building 1 (the dimension in the direction perpendicular to the opening 2), and its height is The building 1
It has several floors that make up the building.

[0011] Louvers 4, 4 are provided at both ends of the opening 2, that is, at the side surfaces of the building 1, respectively. This louver 4 has a plurality of blades 6 (three in the illustrated example) each rotatably provided around a horizontal axis 5.
, 6,... This louver 4 closes the entire cross section of the opening 2 when it is closed, that is, when the blades 6 are substantially vertical. Further, in this case, each of the blades 6 constituting the louver 4 will not rotate around the horizontal axis 5 unless a predetermined wind pressure is applied, for example by adjusting the inertia weight of the blade 6 itself. It is set as follows.

According to the above-mentioned building 1, when the wind speed is low, that is, when the wind pressure is low, the opening degree of the louver 4 is small as shown in FIG. It can be suppressed. On the other hand, when the wind speed is high, that is, when the wind pressure is high, each blade 6, 6, . . . is pushed upward by the wind pressure, and the opening degree of the louver 4 becomes large. In other words, a large amount of air (wind) can escape through the opening (air hole) 2. At this time, the greater the wind pressure, the greater the opening degree of the louver 4.
If the wind pressure is small, it will be small.

[0013] Therefore, in the above-mentioned building 1, when there is a strong wind, air can escape from the opening (vent) 2 to prevent wind swaying, as in a conventional building having a vent. On the other hand, when the wind is weak, the amount of air that enters the opening 2 can be restricted to prevent the wind from entering the vent and causing the building to sway. Therefore, according to the building 1, wind sway can be effectively prevented in both weak winds and strong winds.

In the above embodiment, the louver 4 is configured such that the opening degree of the louver 4 is small when the wind is weak, and the opening degree of the louver 4 is large when the wind is strong, due to the inertial weight of the blades 6, 6, etc. However, as shown in FIG. 5, each blade 6 may be provided with a biasing means 7, such as a spring, which always biases the blade 6 in the closing direction. Furthermore, in the above configuration, each blade 6 is vertically rotated around the horizontal axis 5, but when the biasing means 7 is provided in this way, the blade 6 can be rotated horizontally around the vertical axis, for example. It may be configured as follows.

Further, in the embodiment, the louver 4 is arranged in an opening (
Although the louvers 4 are provided at two locations at the ends of the air holes 2, the louvers 4 may be provided at only one location at the center of the opening 2, for example. Further, the cross-sectional shape of the opening 2 is not limited to a rectangular shape, but may be circular in cross-section or other polygonal shapes, for example. In that case, the overall shape of the louver 4 may be configured to match the shape of these openings.

Next, FIG. 6 shows a second embodiment of the present invention. In this embodiment, the louver 4 is opened and closed by a driving means. In FIG. 6, the reference numeral 9 indicates an actuator (driving means) operated by hydraulic pressure or pneumatic pressure.
One end of a dogleg-shaped link 11 that rotates around is rotatably connected. The other end of this link 11 is rotatably connected to one end of a connecting rod 13 which is connected to the side of each blade 6, 6, . . . composing the louver 4 via pins 12, 12, . There is.

Based on the above configuration, the louver 4 can be moved by operating the actuator 9.
It is possible to freely set the opening degree. Therefore, for example, in accordance with the strength of the wind acting on the building 1, it is possible to increase the opening degree of the louver 4 during strong winds, and to decrease the opening degree of the louver 4 during weak winds. Therefore, it is possible to most effectively reduce the wind sway of the building in both strong winds and weak winds.

Furthermore, in the case of the above embodiment, for example, an anemometer or the like is installed to detect the wind pressure acting on the building 1, and the operation of the actuator (driving means) 9 is determined based on information from the anemometer, etc. It is also possible to configure the system to be controlled by In that case, it becomes possible to control the opening degree of the louver 4 by making it follow satisfactorily, for example, changes in the wind force over a short period of time (short period).

FIGS. 7 and 8 show other embodiments of the building 1 according to the present invention. This building 1 has a horizontal cross-sectional rectangular shape similar to the building 1 shown in FIG. 1 etc., but as shown in FIG. Together, they are formed in two intersecting directions. Louvers (air volume control means) 4 are provided at both ends of each of the openings 2, 2. The louver 4 in this embodiment is also composed of a large number of blades 6 that vertically rotate around a horizontal axis 5. Furthermore, in the illustrated example, an opening 2' is further formed almost in the middle part of the building 1. Although not shown, this opening 2' is also provided with air volume control means such as the louver 4.

In the building 1, the openings 2 are orthogonal to each other.
Since it is provided in the direction, it is possible to reduce the wind sway of the building 1 even in the case of wind from any direction. Further, the louver 4 in this embodiment may also have a configuration in which the blade 6 is pushed up by wind pressure as shown in FIGS. 3 and 4, or it may be actively controlled by a driving means as shown in FIG. It can also be used as a thing.

[0021] In each of the buildings of the above embodiments,
Although the configuration uses the louver 4 as the air volume control means,
The air volume control means in the present invention is not limited to this louver, but may be of any other configuration as long as it can change the cross section of the opening 2 from a substantially fully open state to a substantially fully closed state. For example, it may have a structure similar to a camera aperture.

[0022]

As explained above, according to the building according to the first aspect, it is possible to control the amount of air passing through the air hole (air volume) in accordance with the wind pressure acting on the building. Therefore, this makes it possible to suppress the amount of air passing through the wind hole especially in times of weak winds, and prevents wind swaying during times of weak winds, which was a negative effect of having wind holes, and allows The wind sway of buildings can be effectively reduced under all conditions.

[0023] According to the building according to the second aspect, since the air volume control means is constituted by a louver, there is an advantage that the air volume control means can be made to have a reliable function at a low cost.

According to the building according to claim 3, the louver can be opened and closed according to the strength of the wind without using any driving means, and the air volume control means can be constructed at extremely low cost. .

According to the building according to claim 4, since the opening degree of the louver can be arbitrarily controlled, the louver can be set to the opening degree that can most effectively prevent the building from shaking depending on the situation. It has excellent effects.

[Brief explanation of drawings]

FIG. 1 is a front view schematically showing a building according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the building in FIG. 1.

FIG. 3 is a side view showing the structure and function of the louver according to the present invention.

FIG. 4 is a side view showing the function of the louver.

FIG. 5 is a side view showing another configuration of the louver according to the present invention.

FIG. 6 shows another configuration of the louver according to the present invention, and is a side view showing the louver together with its driving means.

FIG. 7 is a partial front view showing another embodiment of the building according to the present invention.

8 is a partial elevational sectional view of the building shown in FIG. 7. FIG.

FIG. 9 is a graph showing the relationship between wind speed and shaking of buildings for buildings with and without air vents.

[Explanation of symbols]

1 Buildings 2 Opening (air hole) 4 Louver (air volume control means) 9 Actuator (driving means)

Claims (4)

[Claims] [Claim 1] In a building having an air hole extending almost horizontally through the building at an arbitrary position in the building in order to prevent shaking due to wind, the opening area of the opening is changed in the opening forming the air hole. A building characterized by being provided with an air volume control means for controlling the air flow. 2. The airflow control means according to claim 1, wherein the air volume control means is constituted by a louver that completely closes the opening in the closed state and opens the entire cross section of the opening in the open state. Building. 3. The louver is configured to be in a closed state when no wind pressure is applied to the louver, and to be opened by the wind pressure when an amount of wind pressure is applied to the louver. architecture. 4. The building according to claim 2, wherein the louver has a driving means for opening and closing the louver.