JPH021402Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a proposal for a support structure for the intermediate portion of a membrane material in an air membrane structure.

The air membrane structure is made by crossing cables on the roof surface and stretching them in the shape of a sticky net, and fixing the membrane material around the squares of the grid on all four sides. send the
Indoor air pressure 0.0025 atmospheres (25Kg/m ² ) below atmospheric pressure
It is an air support structure that inflates the roof surface by increasing the height. That is, as shown in Fig. 1, wires 2... are laid out in a grid pattern according to the scale of the building from the compression ring 1 provided around the building, and the wires 2..., the compression ring 1 are connected to each other.
It is made by fixing membrane materials 3, ... cut by geometric nonlinear analysis so as to obtain an equilibrium curved surface by internal pressure between them, and the membrane materials 3, ... facing each other via a wire 2. 3, the film is continuously processed on the wire 2 via a fixing metal fitting.

In this process, as shown in FIG. 2, holding U-bolts 4 are attached to the wire 2 at predetermined intervals, and a holding plate 5 made of an aluminum channel is attached to the tip of the U-bolt 4 to press down the wire 2. The holding plate 5 is fitted with a long aluminum C-shaped steel 6 extending along the wire 2 with a predetermined gap, and a plate part (long aluminum C-shaped steel) for a membrane fixing joint is attached above the wire 2. 6) Form. On this plate part, the end of the membrane material 3 is processed into a bag shape, a rope 7 is inserted into this, the large diameter end is held down with a metal fitting 8 (with a bolt), and the membrane material 3 is attached to the wire 2. On the other hand, it becomes a fixed relationship. moreover,
A seal between the adjacent membrane members 3 is achieved by pushing a gasket 9 into the gap between the large diameter parts, and a cover for the hardware 8 is achieved by covering it with an upper neoprene cover 10. On the other hand, 11 in the figure is the long aluminum C
This is a condensation catcher that is attached to the shaped steel 6 at the same time as the membrane material 3 is attached.

In addition, since it is important to obtain airtightness and watertightness for this fixed joint part, the attachment part of the membrane material 3 should be designed to prevent the membrane material 3 from being damaged by repeated movements such as wind pressure. , it is better to fasten it through a cushion.

Furthermore, the joints between the long aluminum C-shaped steel 6 and the hardware 8 made to have the same length are always aligned to ensure the bending movement of the wire 2.

It is preferable that the holding plate 5 is disposed across the joint of the long aluminum C-shaped steel 6.

As is clear from the above, since the unit of membrane material 3 is supported only by the joints placed at its peripheral edge, there are naturally restrictions on its scale, and the wind pressure resistance conditions in Japan The reality is that the maximum span is limited to about 7.5m to 10m.

However, if this scale can be expanded, it is possible to reduce the number of end joints of the membrane material unit mentioned above, and it is possible to reduce the number of man-hours and improve workability. Therefore, as shown in Fig. 3, auxiliary wires 12,... are bridged between the spans of wires 2,... to increase the number of support points in the middle of the unit of membrane material 3, thereby reducing the burden on the joints at the ends of the membrane material. A method was proposed to expand the scale of the membrane material unit mentioned above.

This proposal relates to the provision of a support structure suitable for realizing this method, and its gist is that in an air membrane structure method in which an auxiliary wire is additionally installed between the wire spans, the auxiliary wire is placed in a predetermined position. I-bolts are erected at intervals through clamp fittings, and the aluminum channel fixed to the upper end of the I-bolt is engaged with a long aluminum C-shaped steel with a single bolt erected in the center of the upper surface, A neoprene cover for condensation, a membrane material, and a membrane extension consisting of a locking rope passed through the folded portions on both sides in the longitudinal direction are sequentially stacked on the long aluminum C-shaped steel in such a manner that the single bolt skewers the center, and then , a concave portion into which the large-diameter portion of the locking rope fits is covered with a presser metal fitting for crimping, which is secured by tightening with a nut, and is supported at the intermediate portion of the membrane material. The point is that it provides a means to easily accomplish this.

This will be explained in detail below based on the drawings.

That is, as shown in FIG.
is attached with a clamp fitting 14 and a bolt 15, and the aluminum channel 16 fixed to the upper end of the I bolt 13 is inserted into a long aluminum C-shaped steel 17 and fixed. The configurations of the aluminum channel 16 and the long aluminum C-shaped steel 17 correspond to the previously described presser plate 5 and the long aluminum C-shaped steel 6, and thereby constitute the intermediate support plate portion of the membrane material 3. Ru. A condensation-receiving neoprene cover 18 with gutter portions 18a, 18a formed on both sides of the entire extruded structure is attached to the long aluminum C-shaped steel 17, and a middle portion of the membrane material 3 is placed on top of this with a presser metal fitting. At 19, it is held down with bolts 20 in the following manner.

That is, as shown in FIGS. 5a and 5b, a membrane 3' is stretched over the membrane material 3, and a locking rope 7' is passed through the folded portion. As a result, the membrane material was more prone to breakage and deterioration than around the bolt holes, but the membrane thickness is increased and deterioration of the membrane material is prevented, and the locking rope 7' at the end acts to lock and hold down the area. The bonding strength with the hardware 19 is improved, and the effect of preventing breakage is achieved.

In FIG. 5, a shows the case of triple welding, and b shows the case of double welding. On the other hand, the presser metal fitting 19 that presses the joint is provided with a recess 21 for fitting the large diameter end of the locking rope 7'.
Hold it in place by tightening step 2.

In addition, 23 in the figure is a water stop cover made of synthetic rubber, and its upper end large diameter part 23a is fitted into engaging claws 19a that protrude on the left and right sides of the presser foot 19, and 24 in the figure
25 indicates a joint cover made of synthetic rubber that is inserted and fitted between the large diameter portions 23a, and 25 indicates a zipper for preventing the fitting portion from coming off. The watertightness of the area is ensured.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the membrane structure, Fig. 2 is an explanatory diagram of the conventional membrane joint part, Fig. 3 is an explanatory diagram of the membrane structure of the sub-wire installation method, Fig. 4 is an explanatory front view of the support structure of the present invention, Figures 5a and 5b are diagrams showing an embodiment of increasing film thickness in the present invention. 3'... Membrane, 7'... Locking rope, 12... Auxiliary wire, 13... I bolt, 14... Clamp fitting, 15... Bolt, 16... Aluminum channel, 17... Long aluminum C-shaped steel, 19... presser foot, 21... recess.

Claims (1)

[Scope of utility model registration request] In the air membrane structure method in which an auxiliary wire is additionally installed between the wire spans, I-bolts are erected on the auxiliary wire at a predetermined spacing via clamp fittings, and fixed to the upper ends of the I-bolts. The aluminum channel is engaged with a long aluminum C-shaped steel with a single bolt planted in the center of the top surface, and the condensation-receiving neoprene cover membrane material is fixed on the long aluminum C-shaped steel and the folded parts on both sides in the longitudinal direction. The membrane extensions formed through the locking rope are sequentially stacked in such a manner that the single bolt skewers the center, and a recess into which the large-diameter portion of the locking rope fits is formed on this stacked portion. 1. A support structure for an intermediate part of a membrane material in an air membrane structure, characterized in that a presser metal fitting for crimping is secured and covered with a nut.