JPH0438379A - Roof - Google Patents

Abstract

PURPOSE:To obtain an appropriate roof in a large scale building with large openings for an entrance and exit, by contacting a number of balloons filled with a gas having a lighter specific gravity than air under a water proof sheet to support the water proof sheet and by laying a coarse-opening net under the balloon. CONSTITUTION:The peripheral edge of a water proof sheet 1 composing the upper face of a roof is fixed along the upper edge of the wall 2 and a coarse- opening net 3 is laid in parallel with each other at an appropriate interval under the water proof sheet 1. And a number of balloons 7 having the diameter shorter than the distance between the water proof sheet 1 and the net 3 but larger than the opening of the net 3, are contained between the sheet 3 and the net 3. In this inside of the balloon 7, helium gas or the like is charged and sealed. The water proof sheet 1 and the net 3 are fixed at some points by fixing members 4 like rope crossing to the both faces to keep a certain interval all along the face.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a roof suitable for a building with a large plane and large entrances and exits, such as an aircraft hangar.

2. Description of the Related Art Conventionally, air membrane structures have been known for buildings that require large spaces that are not partitioned by pillars, walls, etc., in which the indoor air pressure is higher than the outside pressure, and the seats are supported by this air pressure.

However, in order to prevent indoor air from leaking outside and lowering the atmospheric pressure, the entrance and exit must be made small, and a complicated structure such as separating the entrance and exit with double doors is required, so it is difficult to store the hangar. It was not suitable for buildings that required large entrances and exits, such as

Problems to be Solved by the Invention An object of the present invention is to provide a structure in which the supporting force of the seat is not affected even if the entrance is enlarged, the structure is simple, construction and removal are easy, and the construction is large-scale and has a large entrance. The purpose is to provide a suitable roof for things.

Means for Solving the Problems In order to achieve the above-mentioned problems, the roof of the present invention supports the waterproof sheet by bringing a number of balloons filled with a gas whose specific gravity is smaller than air into contact with the lower surface of the waterproof sheet. In addition, the balloon has a structure characterized in that a coarse net is stretched over the lower surface of the balloon.

The waterproof sheet is supported by the buoyancy of the working balloon, and the net stretched over the underside of the balloon presses the balloon lightly from below, regulating the thickness of the layer that houses the balloon and preventing uneven distribution of the balloon. As the gas escapes, the balloon's diameter becomes smaller and its buoyancy decreases, causing it to fall through the mesh of the net.

Example Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, 1 is a waterproof sheet constituting the upper surface of a roof, and its peripheral edge is fixed along the upper end of a wall 2.

Below the tarpaulin sheet 1, coarse nets 3 are stretched in parallel at appropriate intervals, and the tarpaulin sheet 1 and the net 3 are
As shown in FIG. 2, they are moored in places by locking members 4, such as ropes, which are perpendicular to both surfaces, and are kept at constant intervals over the entire surface. Also, net 3
A plurality of openings 5 are formed in the periphery, and the upper end of a guide tube 6 provided vertically along the wall 2 communicates with the openings 5 .

A large number of balloons 7 are housed between the waterproof sheet 1 and the net 3, each having a diameter smaller than the distance between them and slightly larger than the mesh of the net 3.

The inside of the balloon 7 is filled with a gas such as helium, which has a lower specific gravity than air.

Further, when the gas inside the balloon 7 is released and the buoyancy is reduced, the diameter of the balloon 7 also becomes smaller, so that the balloon 7 that is no longer needed falls through the mesh of the net 3. If the number of balloons 7 decreases and the supporting force of the waterproof sheet 1 becomes weak, new balloons 7 may be added through the guide tube 6 through the opening 5.

To construct the roof of the present invention, the net 3 is stretched below the tarpaulin sheet 1 and attached to the locking member 4 in advance, and the balloon 7 is inserted between the tarpaulin sheet 1 and the net 3 through the guide tube 6. Alternatively, the net 3 can be stretched after only the waterproof sheet 1 is stretched, the balloon 7 is floated from below, and the net 3 is brought into contact with the lower surface of the waterproof sheet 1 with a substantially uniform thickness.

In either case, the balloon 7 is lightly pressed from below by the tension of the net 3, and will not be unevenly distributed in the negative position.

In addition, in FIG. 1, the reference numeral 8 is a doorway provided in the wall 2.

Furthermore, the present invention can also be applied to dome-shaped or semi-cylindrical buildings that do not have separate walls 2.

Effects of the Invention According to the present invention, the waterproof sheet, which forms the upper surface of the roof, is supported by the buoyancy of a large number of balloons that contact the lower surface of the waterproof sheet. In addition, the structure of the entrance and exit can be simplified, and since the supporting force of the tarpaulin sheet is distributed among a large number of balloons, the decline in supporting force due to gas leakage can be minimized. .

In addition, since a net was placed on the underside of the balloon, the tension of the net made the balloon layer uniform, preventing it from being unevenly distributed in one place, and the balloon, which had lost its buoyancy due to gas leakage, would fall through the mesh of the net. Can be easily recovered.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a structure according to an embodiment of the present invention, and FIG. 2 is a partially cut-away rear perspective view of the roof before balloon storage. 1... Tarpaulin sheet, 2... Wall, 3... Net, 4
... Locking member, 5 ... Opening, 6 ... Guide tube, 7
...Balloon, 8...Entrance.

Claims (1)

[Claims] A roof characterized in that the waterproof sheet is supported by contacting the lower surface of the waterproof sheet with a large number of balloons filled with a gas having a specific gravity lower than that of air, and a coarse net is stretched over the lower surface of the balloons. .