JPS59192140A - Three-dimensional curved structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a three-dimensional curved structure.

BACKGROUND ART Conventionally, as shown in FIG. 1, a building with a three-dimensional curved structure made of steel frames (b) assembled into a dome shape has been known for use as an event venue such as an exposition. Or, as shown in Figure 2, the wall thickness is 2.
A structure is known in which the surface is covered in a dome shape with a coating (C) of around 0 crn, air is sent inside from a blower (a), and a predetermined pressure (P) is applied to the inner surface to maintain a cubic surface.

However, both had the following drawbacks.

In other words, the loads that act on a building include long-term loads such as its own weight, and short-term loads due to wind pressure and earthquakes. must be designed as such.

Therefore, a large amount of large steel frames with a high section modulus are required, which can be said to be extremely uneconomical. On the other hand, as shown in Figure 2, the ground (
The lower end edge (e) of the coating (C) is embedded in d), and a sealed structure with a protruding shape is inconvenient for large numbers of people to enter and exit in event venues and other uses. However, there were disadvantages in that the room felt oppressive, the room temperature rose too high, and ventilation was insufficient. Another disadvantage is that the blower (a) must be driven at all times. Especially the film (
In order to maintain the cubic shape only with C), the wall thickness ■ must be made thicker, making it difficult for sunlight to enter, making the room darker and giving a more oppressive feeling, and the coating (C) also has to be manufactured using a special method. It had such drawbacks.

The present invention was made in view of the above-mentioned conventional problems, and is characterized by having a steel frame that shares and supports long-term loads and a surface coating that shares and supports short-term loads. The bottom peripheral edge of the surface coating is formed in a continuous manner, and the bottom edge of the surface coating can be opened and closed freely by a vertically moving water level sealing means that moves the water level up and down. It is equipped with an air pumping device that pumps air into the room and maintains it at a pressure slightly higher than atmospheric pressure.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

In FIGS. 3 and 4, (1) is the ground, on which a substantially hemispherical dome-shaped three-dimensional curved structure (2) is erected.

The three-dimensional curved structure (2) includes a steel frame (3) that shares the long-term load and maintains the semicircular dome shape, and an inner surface of the semicircular dome formed by the steel frame (3). A surface coating (4) that is stretched in abutment to support the short-term load.
It consists of (5) is an air pressure feeding device, which consists of a blower, piping, etc.

In this way, the steel frame (3) and the coating (4) form a continuous double structure from the roof to the surrounding outer wall, but the lower edge (6) of the coating (4) ))
The vertically movable water level sealing means (B) that moves up and down allows the seal to be opened and closed freely. Then, when the water level (5) is at a high position shown by the broken line, the lower end peripheral portion (6) is submerged in the water, and the interior of the room (7) is in a sealed state, the air pressure feeding device (
Air is sent into the room (7) by a pressure pump (P) slightly higher than atmospheric pressure, for example, about 2 to 3 gauge pressure.
Keep it at about K9y'mw.

Specifically, the floor (8) inside the room (7) and the ground (1)
A concave groove (9) of a predetermined width is provided along the boundary. Then, the outer peripheral edge (6) of the lower end of the coating (4) is formed into a concave groove (9).
The groove (9a) has a sufficient vertical spacing than the floor part (9a) of the
) to rush inside. At a low position, the water surface (g) drops to near the floor (9a) as shown by the solid line, and the water surface (g) drops to the bottom outer peripheral edge (6).
A gap QO) is formed between the two, and an open state is established. A bridge 0υ is built over the groove (9) through this interval 00),
Furthermore, stairs a'a a, a are provided so that people can freely go in and out of the room. 03 is a reservoir located at a considerably higher place than the groove (9), and the reservoir (14) and the groove (9) below are communicated through a flow path 05 having an on-off switching valve. The vertical water level sealing means (B) consists of a groove (9), a water surface (A) whose vertical movement can be freely controlled, a reservoir drain, and a switching valve 0.
It consists of a flow path (151 and a drainage path α6), etc. In addition to natural ponds and artificial ponds, pools and rivers can also be used as reservoirs (131), and these are naturally included.

In addition, in FIG. 3, a pillar Q7) is erected on the floor part (8) and protrudes upward by passing through a window part α8) which is completely penetrated through the center of the roof part of the coating (4). An elevator for viewing is installed on the rear so that it can move up and down.

When the vertical water level sealing means (B) is at a low position, the air flowing in from the gap aO flows as shown by the arrow (C1 (D)), escapes from the window α8, and escapes from the interior of the room (7 ) with sufficient ventilation to prevent room temperature from rising.

On the other hand, when a typhoon approaches or there is an earthquake forecast, and short-term loads such as wind pressure and earthquakes are expected, the elevator 09) is virtually stopped at the window 08) like a gland, and
Inflate the elastic body (A) attached to the outer circumference of the elevator screamer to close the window Q81 and open the switching valve 04) to introduce water from the reservoir α3 into the groove (9). do,
The water level (5) is raised to the position of the broken line, the lower edge (6) is placed below the water surface, and the air pressure feeding device (5) is sealed.
It is possible to drive air into the room (7) by applying pressure (Pi) to the coating (4), which is slightly higher than atmospheric pressure, and to make it possible to sufficiently withstand short-term loads due to its tension. Become.

Note that ■υ indicates a connector that connects the coating (4) in an open state so that it does not separate from the steel frame (3), and connects the coating (4) and the steel frame (3) at an appropriate position.

Next, in another embodiment shown in FIG.
Instead, use water from the tap (0]) to drain the groove (9).
At the same time, a coating (4) is formed on the outside of the steel frame (3).
). This has the advantage of improving rain protection and making the exterior of the building more beautiful.

However, the number of couplings Cυ... must be increased.

Although not shown, it is also possible to divide the surface of the steel frame (3) into a large number of sections and apply a coating to each section to cover the entire three-dimensional curved surface in a sealed manner.

Next, in Fig. 7, the floor part (8) is supported like a stage on the bottom part (9a) of the shallow pond (9b) with supporting legs (a)..., and the steel frame (3) and the coating (4) It is covered in a dome shape. In this way, instead of the groove (9), there is a shallow pond (9b).
It is also possible to use this as a vertically moving water level sealing means (B).

In addition, the cubic curved structure (2) according to the present invention can be used in various event venues such as exhibition halls, gymnasiums, sports halls,
It is suitable for use in cafeterias, warehouses, etc., and has a wide range of uses. It is possible to have a large dome shape with a diameter of 100 m or more in plan view, and it is also preferable to have an elliptical shape or other shapes.

The present invention has effectively achieved its intended purpose with the above-described configuration. In particular, the roof and surrounding outer walls are formed continuously with a steel frame that supports long-term loads and a surface coating that supports short-term loads, and the lower edge of the surface coating can be moved up and down to adjust the water level. The seal can be opened and closed freely by means of a vertically moving water level sealing means, and is equipped with an air pumping device that pumps air into the chamber formed by the surface coating and maintains the pressure slightly higher than atmospheric pressure when the seal is in a sealed state. Because of the structure, the steel frame (3) only needs to be thin and light enough to withstand long-term loads.
It can greatly contribute to weight reduction and cost reduction, and the coating (4
The wall thickness CD of ) can be made sufficiently thin so that it can be used indoors (
7) - Enables sufficient daylight to be taken in, giving a bright feeling to the people in the room. The air pumping device (5) operates only during strong winds or earthquakes, saving electricity and extending the life of the device (5).

Furthermore, it has the great advantage of being able to quickly switch to a sealed state that can handle short-term loads during strong winds or earthquakes. On the other hand, it is usually convenient to keep it open so that it can be sufficiently ventilated.

[Brief explanation of drawings]

FIG. 1 is a simplified perspective view of a conventional example, and FIG. 2 is a simplified sectional view of another conventional example. Fig. 3 is a sectional view showing one embodiment of the present invention, Fig. 4 is an enlarged view of the main part, Fig. 5 is a sectional view of another embodiment, Fig. 6 is an enlarged view of the main part, and Fig. 7 is an enlarged view of the main part. FIG. (3)...Steel frame, (4)...Surface coating, (5)...
・Pneumatic feeding device, (6)...lower end periphery, (7)...
・Indoor interior, (13)... Water level sealing means.

Claims (1)

[Claims] / The roof and surrounding outer walls are formed continuously with a steel frame that shares and supports long-term loads and a surface coating that supports short-term loads, and the lower edge of the surface coating allows the water level to move up and down. A vertically movable water level sealing means is used to freely open and close the seal, and when the seal is in a sealed state, air is pumped into the chamber formed by the surface coating, and the air pressure is maintained at a pressure slightly higher than atmospheric pressure. A three-dimensional curved structure comprising a device.