JP2566802Y2 - Roof membrane edge mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof membrane end mounting structure which is stretched between outer walls so that it can be inflated and deflated.

[0002]

2. Description of the Related Art In recent years, there has appeared a structure in which a roof of a large space facility having a pillarless structure such as a dome is constructed as a membrane roof. In this membrane roof structure, an upper end portion of an outer wall surrounding a large space facility is covered with a roof membrane formed of a waterproof flexible membrane. The roof membrane is inflated (expanded) by injecting air into the inside of the large space facility, and a dome-shaped roof having a central portion swelled in the inflated state is formed. Further, in order to prevent the roof membrane from fluttering under the influence of wind or the like, a cable is laid between outer walls at appropriate intervals, and the cable supports the roof membrane.

FIG. 3 shows a conventional roof membrane 1 end mounting structure. The roof membrane 1 has an end mounted on an outer wall 3 via a bracket 2.
Is fixed to the upper end. In this case, the cable 4 is disposed inside the roof membrane 1, and its end is vertically rotatably attached to the upper end of the outer wall 3 via an anchor 5.

[0004]

However, in such a conventional roof membrane end mounting structure, when the end of the roof membrane 1 is fixed to the outer wall 3 via the bracket 2, the roof membrane 1 is not fixed. The bracket 2 is fixed in contact with the corner 2 a. The contact portion serves as a fulcrum when the roof membrane 1 is inflated and deflated, and a large tension due to the roof membrane load is applied to the contact portion. Therefore, since the roof membrane 1 has a remarkably small contact area with the corner portion 2a, the tensile stress of the roof membrane 1 is concentrated on this contact portion, and the roof membrane 1 is easily cut off in this portion. There is a problem that the durability of the film 1 is reduced.

In view of the above-mentioned problem, the present invention increases the contact area of the roof membrane end mounting portion, thereby dispersing the tensile stress acting on the contact portion, thereby improving the durability of the roof membrane. It is an object of the present invention to provide a roof membrane end mounting structure that is improved.

[0006]

According to the present invention, there is provided an end mounting structure for a roof membrane which is stretched between opposite outer walls so as to be inflatable and deflateable.
The upper portion than the mounting portion of the roof membrane, the at least extending direction of the roofing membrane provided to support the curved portion that bulges in the opposite direction to the outer wall side, a direction from the outer roof membrane to the curved portion
After turning around without changing , the end is fixed to the outer wall side.

Further, in such a configuration, it is desirable that the curved portion is formed of a tubular body.

[0008]

According to the above construction, in the roof membrane end mounting structure of the present invention, since the roof membrane end is fixed after orbiting the curved portion, the roof membrane is connected to the roof membrane at the curved portion. Can greatly increase the contact area. Therefore, the tensile stress acting on the mounting portion of the roof membrane can be dispersed at the contact portion with the curved portion, and the durability of the roof membrane can be greatly improved.

Further, in such a configuration, by forming the curved portion with a tubular body, a smooth curved surface can be easily formed. Further, since the tubular body has the closed cross-sectional shape, the rigidity of the curved portion can be increased, and the supporting strength of the roof membrane can be greatly improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a main part of an embodiment of a roof membrane end mounting structure according to the present invention, and FIG. 2 is a schematic sectional view of a large space facility to which the present invention is applied.

That is, the large space facility shown in FIG. 2 is used as an artificial skiing area 10, and outer walls 12, 12 are constructed on both sides, and a roof membrane 1 is provided between upper ends of the outer walls 12, 12.
4 is stretched. The floor surface 18 of the large space portion 16 composed of the outer walls 12, 12 and the roof membrane 14 is continuously inclined in the front and back directions in the drawing.
8 is made to carry artificial snow and can slide on the snow.

In the figure, the solid state of the roof membrane 14 indicates a state in which air is injected into the inside and inflated, and the state of a two-dot chain line indicates a state in which the internal air pressure is eliminated and the state is deflated. The roof membrane 14 has outer walls 12, 1
It is supported via a cable 20 (see FIG. 1) that is installed between the upper ends of the two. The cable 20 is connected to the large space 1
6, that is, a plurality of cables are provided at appropriate intervals in the longitudinal direction of the paper, that is, in the front and back directions in FIG.
Are attached to the outer wall 12 via an anchor 22 so as to be vertically rotatable. A machine room 24 and a lift room 26 are provided outside the outer walls 12, 12, and an air conditioner, an artificial snow machine, a snow gun, and the like are installed in the machine room 24.

FIG. 1 shows, on an enlarged scale, an end portion of the roof membrane 14 at a portion A in FIG. 2, and the end portion of the roof membrane 14 is formed by an end outer membrane 30 and an end inner membrane 32 having flexibility. It is configured as a double membrane structure. The general portion of the roof membrane 14 is also formed as a double membrane structure by the flexible outer membrane 34 and inner membrane 36. The end structure of the roof film 14 has the same structure on the left and right in FIG. 2. In this embodiment, the left end structure shown in the section A will be described as an example.

The end outer film 30 and the outer film 34 and the end inner film 32 and the inner film 36 are formed continuously with flexible films. Membrane 3
4 has water resistance. The outer membrane 34 and the inner membrane 3
6 is connected via a separation film 38 arranged at appropriate intervals in the direction in which the cable 20 is laid, a heat insulating material 40 is filled between the outer film 34 and the inner film 36, and the roof film 14 Configured as an insulated roof membrane. The heat insulating material 4
As 0, foamed plastic particles, natural organic fiber cellulose fiber, or a mixture thereof is used.

The outer wall 12 to which the roof membrane 14 is attached is constructed as a concrete wall, and the upper end thereof is formed in a stepped shape in which an upper step 12a is provided on the outside (left side in the figure) and a lower step 12b is provided on the inside (right side in the figure). Outer wall 12 from upper section 12a
A substantially V-shaped pedestal 42 is fixedly provided with anchor bolts 44 so as to straddle the outside. The anchor 22 is attached to an upper portion of the pedestal 42, and a bracket 46 for fixing the end outer membrane 30 at the end of the roof membrane 14 is attached to a corner of the pedestal 42.

The anchor 22 is connected to the cable 20.
A rotating member 22a for fixing an end of the rotating member 22;
a and a base member 22c which connects the base member 22a via a pin 22b so as to be vertically rotatable. The base member 22c is fixed to the base 42. The pedestal 42 is a stay 48
It is adapted to be supported outward through the.

The bracket 46 is formed in an L-shape by a horizontal portion 46a facing the outside of the outer wall 12 and a vertical portion 46b along the outer surface of the outer wall 12, and this vertical portion 46b is welded to the pedestal 42. And so on. A bolt 50 is implanted below the horizontal portion 46a, and an end of the outer membrane 30 is fixed to the bolt 50 via a holding plate 52 and a nut 54.

On the other hand, the end inner membrane 32 at the end of the roof membrane 14
Is fixed via a holding plate 58 and a nut 60 to a bolt 56 implanted in the lower step 12 b at the upper end of the outer wall 12. The end outer film 30 and the end inner film 32 are disposed on the outer side and the inner side with the anchor 22 in between. The end outer film 30 and the end inner film 32 are made of glass wool or the like. The heat insulating material 62 is filled.

Here, in this embodiment, a pipe 64 as a curved portion is fixed to the upper end of the horizontal portion 46a of the bracket 46 (left end in the figure) by welding or the like. The opposite side (left side in the figure) of the pipe 64 from the extension direction of the outer membrane 30 (right side in the figure) is disposed so as to protrude from the tip of the horizontal portion 46a. The end of the outer membrane 30 is fixed to the bolt 50 after orbiting the outside of the pipe 64.

With the above structure, in the roof membrane end mounting structure of this embodiment, when the roof membrane 14 is deflated from the inflated state shown by the solid line position in FIG. As shown by the dashed line, the roof membrane 14 and the cable 20
Is in a state of being inclined downward with the rotation of the anchor 22. At this time, the end outer membrane 30 constituting the end of the roof membrane 14 is fixed to the bracket 46 after rotating around the pipe 64 as shown in FIG.
Therefore, the end outer membrane 30 and the pipe 6 are rotated by the amount of rotation of the pipe 64 at the attachment portion of the end outer membrane 30.
4 can increase the contact area.

Therefore, when a large tensile stress is applied to the attachment portion of the end outer membrane 30, the stress can be dispersed at the contact portion with the pipe 64 having a large contact area. For this reason, it is possible to prevent the tensile stress from being concentrated on the attachment portion of the end portion outer membrane 30, so that
The end outer membrane 30 can be prevented from being cut and its durability can be significantly improved.

In this embodiment, the roof membrane having a double structure and a heat insulating material is disclosed as the roof membrane. However, the present invention is applicable to a single membrane structure without being limited thereto.
Also, the case where the present invention is applied to the roof membrane 14 of the artificial ski resort 10 has been disclosed. However, the present invention is not limited to this, and may be applied to other large space facilities, for example, an end mounting structure of a roof membrane such as a general dome. Of course, it can be applied.

[0023]

As described above, in the roof membrane end mounting structure according to the first aspect of the present invention, at least a portion above the mounting portion of the roof membrane stretched between the outer walls is provided. A curved portion that swells in the direction opposite to the direction in which the roof membrane extends is provided on the outer wall side to support the roof membrane, and the direction of the roof membrane is changed from the outside to the curved portion.
After turning around without changing , the end is fixed to the outer wall side, so the tension acting on the roof membrane in this curved part is supported, and the contact area between these roof membrane and the curved part is greatly increased. Can be increased. Therefore, the tensile stress acting on the mounting portion of the roof membrane is dispersed at the contact portion with the curved portion, and the durability of the roof membrane can be greatly improved.

According to the second aspect of the present invention, since the curved portion is formed of a tubular body, a smooth curved surface can be easily formed, and the curved portion is formed by a tubular body having a closed cross-sectional shape. It has various excellent effects such that the rigidity of the portion can be increased and the supporting strength of the roof membrane can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a schematic sectional view of a large space facility to which the present invention is applied.

FIG. 3 is a schematic sectional view showing a main part of a conventional roof membrane end mounting structure.

[Explanation of symbols]

 Reference Signs List 10 artificial ski resort 12 outer wall 14 roof membrane 46 bracket 64 pipe (curved part)

Claims (2)

(57) [Scope of request for utility model registration] 1. An end mounting structure for a roof membrane stretched between an opposing outer wall so as to be able to inflate and deflate, wherein at least a portion above an installation portion of the roof membrane and at least a direction in which the roof membrane extends. Is provided on the outer wall side with a curved portion that swells in the opposite direction, and the roof membrane is turned on this curved portion from the outside.
An end mounting structure for a roof membrane, wherein the end of the roof membrane is fixed to an outer wall side after making a round without changing . 2. The roof membrane end mounting structure according to claim 1, wherein said curved portion is formed of a tubular body.