JPH0333906Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an air membrane structure, and particularly to a membrane end locking structure for this type of structure.

An air membrane structure is a structure in which an elastic membrane ceiling material such as synthetic resin is anchored to a wall made of concrete, etc., and pressurized air is sealed inside to bulge the ceiling material upward. It is.

In this type of structure, since pressurized air slightly higher than atmospheric pressure is sealed inside the structure, air-tightness and liquid-tightness are naturally more strictly required than in general structures.

Otherwise, the enclosed pressurized air will leak to the outside, causing the ceiling material to fall downward and lose its function as a structure.

By the way, in the conventional locking structure between the membrane ceiling material and the wall, a flat mounting hardware is interposed between them, and the joint surface between the ceiling material periphery and the mounting hardware and the joint surface between the mounting hardware and the wall are separated. They were fastened together using bolts, etc.

However, such a locking structure has the following problems.

In other words, as mentioned above, in this type of structure, it is extremely important to maintain the internal airtightness and liquidtightness, but it is especially difficult to use a single, connected mounting hardware, so it is necessary to divide it into multiple parts and install the joints. Although the parts were connected while being provided, there was a problem in that air leakage easily occurred from each joint part.

This idea was devised in view of these problems, and its purpose is to prevent air leakage from the mounting hardware, especially when the end of the membrane-like ceiling material and the wall are tightly fixed together. An object of the present invention is to provide a membrane end locking structure of an air membrane structure that can prevent water leakage.

In order to achieve the above object, this invention is an air membrane structure in which the periphery of a membrane ceiling material is fixed to a wall body and pressurized air is sealed inside. The steel material joined at each point is bent into a substantially U-shaped cross-sectional shape, one end side is locked to the lower flange of the steel material, the other end side is arranged on the upper flange surface of the steel material, and the steel material A pair of exterior materials for preventing air leakage surrounding the outer periphery of the ceiling material, and a pair of exterior materials interposed between the exterior material and the steel material and between the steel material and the periphery of the ceiling material so as to go around the periphery of the ceiling material, respectively. A flexible water stop material is provided, and the peripheral edge of the ceiling material, the exterior material, the flexible water stop material, and the steel material are integrally tightened and fixed onto the upper flange.

Hereinafter, preferred embodiments of this invention will be described with reference to the accompanying drawings.

The figure is a sectional view of essential parts showing an example of the membrane end locking structure of the air membrane structure according to the invention.

The locking structure shown in the figure is provided along the periphery of a membrane-like ceiling material 10 made of an elastic material such as synthetic resin, and is connected to the periphery of this ceiling material 10 and a wall made of concrete or the like. 12 and the upper end thereof. The periphery of the ceiling material 10 is folded back inward, and a joint 14 is formed by adhesive or heat fusion, and a string 16 such as a rope is inserted into the end of the joint 14.

On the other hand, the upper end of the wall 12 is formed with an inclined surface 18 that slopes toward the outside of the structure, and a steel material 20 having an H-shaped cross section is installed on this inclined surface 18 to embed an anchor bolt 21 in the wall 12. At the same time, a flexible sheet-shaped first water stop material 22 is interposed on the upper surface of the upper flange 20a of this steel material 20, and is arranged so as to wrap around the outside of the steel material 20, One end of a metal exterior material 24 bent into a roughly U-shape is located, and this exterior material 24 is formed so as to go around the outer surface of the structure, and the other end is attached to the lower flange of the steel material 20. It is locked to.

The lower surface of the ceiling material 10 and the exterior material 2
A second water stop material 26 of the same quality as the first water stop material 22 is placed on this opposing surface.
is interposed so as to go around the periphery of the ceiling material 10, and the periphery of the ceiling material 10, the exterior material 24,
The first and second water stop materials 26 and the upper flange 20a of the steel material 20 are provided with through holes penetrating through them at appropriate locations along the periphery, and a third water stop material 28 is inserted into the through holes. Then, the bolt 30 with the upper presser plate 34 attached thereto is inserted, and the lower presser plate 34 is attached from the lower surface side of the flange 20a, and then the nut 32 is screwed and tightened to be integrally tightened and fixed.

The first, second, and third water stop materials 22, 26, 2
8 may be made of any flexible material, such as natural rubber or synthetic rubber, but preferably a self-fusing tape that exhibits adhesiveness when pressure is applied is preferred because it is easy to handle.

Now, in the membrane end locking structure of the membrane structure configured as described above, the end of the membrane ceiling material 10,
The connection between the end of the exterior material 24 and the end of the steel material 20 is as follows:
This is done by interposing water-stopping materials 22, 26, and 28 between the opposing surfaces and integrally tightening and fixing them with bolts and nuts 30 and 32, which impairs the airtightness and liquidtightness of the structure. The risk is significantly reduced.

What is particularly noteworthy is that even if the steel material 20 is divided into multiple joint parts,
This part is surrounded by a leak-prevention exterior material 24 that is locked or fixed to the upper and lower flanges of the steel material 20, so even if air leaks from the joint part of the steel material 20, pressurized air will not leak to the outside. That's true.

Furthermore, in the case where the outwardly sloping slope 18 on which the steel material 20 is fixed is formed at the upper end of the wall 12 as in the above embodiment, pressurized air is sealed in the structure to prevent the ceiling material 10 from being formed. When bulging upward, a relatively large tension is applied to the locking structure at the end.
By tilting and fixing the steel material 20 on the slope 18,
This can be effectively countered.

The flat presser plate 34 of the above embodiment may be a washer having a slightly larger diameter than the bolts 30 and nuts 32, and the third water stop material 28 interposed below may also have a similar shape.

As explained in the Examples below, the membrane end locking structure of the air membrane structure according to this invention provides an airtight and liquidtight structure without air or water leakage.

[Brief explanation of drawings]

The figure is a sectional view of a main part showing an embodiment of this invention. DESCRIPTION OF SYMBOLS 10...Ceiling material, 12...Wall body, 14...Joint part, 16...String, 18...Slope, 20...Steel material, 20a...Flange, 22...First water stop material, 24 ... Exterior material, 26 ... Second water stop material, 2
8... Third water stop material, 30... Bolt, 32...
Natsuto.

Claims (1)

[Scope of utility model registration request] In an air membrane structure in which the peripheral edge of a membrane-like ceiling material is fixed to a wall and pressurized air is sealed inside, a steel member is fixedly installed at the upper end of the wall and joined at appropriate points;
The overall cross-sectional shape is bent into a substantially U-shape, one end is locked to the lower flange of the steel material, and the other end is placed on the upper flange surface of the steel material to prevent air leakage surrounding the outer periphery of the steel material. a pair of flexible water-stopping materials interposed between the exterior material and the steel material and between the steel material and the periphery of the ceiling material so as to go around the periphery of the ceiling material; A membrane end locking structure for an air membrane structure, characterized in that the peripheral edge of the ceiling material, the exterior material, the flexible water stop material, and the steel material are integrally tightened and fixed onto the upper flange.