JPS63176578A - Method for releasing film material in pneumatic film 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 "Field of Industrial Application" The present invention relates to a method for peeling off a membrane material in a cable-reinforced air membrane structure. This invention relates to a method for peeling off an F-bag material that is effective when temporarily peeling off a portion of the membrane material from the joint part.

``Prior art'' A cable-reinforced air membrane structure is, for example, a composite gin ring installed around a building, as shown in Figure 4.
From there, cable 2 is stretched according to the scale of the building.
A membrane material 3 is stretched between the cables 2 to form a membrane roof, and a pressure (for example, 25 kg/rrr) greater than the weight per unit area of the membrane roof is applied to the chamber. The structure is supported by air pressure.

In the above-mentioned structure, the membrane material 3 is stretched by performing a jitzing process on the two cables between the ends of the membrane material 3 cut into an area recessed by the cable 2.

For example, as shown in FIG.
At the same time, insert and fix the holding plate 5 into the large aluminum channel 6.
11I material 3 by using it as a plate part for the membrane material joint, and holding the ends of the membrane materials 3, 3 having the lobed edges 7 on this plate part with bolts using aluminum pressers 8, 8. is fixed to the cable 2. In FIG. 5, 9 indicates a gasket, 10 indicates waterproof neoprene rubber, and 11 indicates a condensation catcher.

"Problems to be Solved by the Invention" By the way, in such a pneumatic membrane structure, when performing maintenance on the membrane roof etc. after completion, it is necessary to use the aluminum clamp 8.
．． 8 and peel off the adjacent membrane material 3.3 over a predetermined length from the membrane material dizzing plate part (large aluminum channel 6).

However, in such a case, since internal pressure is acting on the lower part of the membrane roof, if the membrane material 3.3 is peeled off over a wide area at once, there is a risk of deflation due to the increase in the opening area due to a large amount of air. There is also the problem that there is no continuity between the peeled I9 materials 3.3, which is dangerous for work.

Note that the need to temporarily peel off the membrane materials 3, 3 exists not only during the above-mentioned maintenance, but also when inflating the membrane roof during construction. That is, when the membrane roof is inflated from the deflated state, a kink phenomenon may occur locally in the cable 2 near the point of reversal, and in this case, the membrane material It is effective to separate the membrane material 3.3 and the cable 2 from the joint part of the membrane material so that the behavior of the membrane material 3.3 and the cable 2 is mutually free during inflation, since it is possible to avoid the destruction of the membrane material 3.3 due to the above-mentioned kink. It becomes.

Therefore, the present invention provides
It is an object of the present invention to provide a method for peeling off a membrane material that is effective when temporarily peeling off a part of the membrane material from a joint part of the membrane material.

"Means for Solving the Problems" In order to achieve the above object, a method for peeling off membrane materials in an air membrane structure according to the present invention includes separating adjacent membrane materials from a membrane joint plate part to a predetermined length. This is characterized in that an auxiliary film is temporarily stretched between the two film materials when the film is peeled off over the period of time.

"Operation" According to the above method, the membrane material can be peeled off over a wide range without significantly increasing the opening area, and continuity between adjacent membrane materials can be easily maintained even after peeling.

“Embodiment” An embodiment of the present invention will be described below based on the accompanying drawings.

As shown in Figures 1 and 2, the cable is located at the center of the membrane roof and extends a predetermined length from the one-piece joint plate part (see large aluminum channel 6 in Figure 5) on the cable 2. An auxiliary member 1920 is positioned on the upper surface side of the membrane roof and is stretched between the adjacent membrane materials 3 and 3 that have been peeled off over the area.

As shown in FIG. 3, this auxiliary membrane 20 has both edges in the longitudinal direction fastened near the edges of both membrane materials 3.3 with bolts 21 and nuts 22.

Therefore, the auxiliary membrane 20 has lobe edges 23 formed in advance on both side edges thereof, and a plurality of bolt insertion holes 24 are previously formed along the longitudinal direction on both side edges.

On the other hand, the bolt insertion hole 24 is located near the edge of the membrane material 3.3.
Bolt insertion holes 25 corresponding to the bolt insertion holes 25 are pre-drilled, and a band-shaped reinforcement 15!26 is provided on the lower surface of the membrane material 3.3 near the edge including these bolt insertion holes 25. Glued in advance. A lobed edge 27 is previously formed at the -(II+ end portion) of the reinforcing film 26.

A large number of the bolt insertion holes 25 are drilled in advance, for example along the broken line in FIG. 1, and are usually closed with a removable plug member (not shown). Therefore, in this embodiment, the auxiliary 15
! 20 is temporarily installed between the intermediate portions of the edges of both membrane materials 3, 3, and is not temporarily installed between both ends, that is, at the intersection of the cables 2.2.

In addition, 28a and 28b in FIG. 3 indicate splicing plates, respectively.

Because of this structure, when temporarily peeling off a part of the required membrane materials 3.3 adjacent to each other from the membrane material joint plate part, first insert the bolts into the required membrane materials 3.3. After opening the holes 25.25, workers placed above and below the membrane roof place the auxiliary membrane 20 between the membrane materials 3.3 and the both side edges of the auxiliary membrane 20 between the membrane materials 3.3. Connect the porto 25 near the edge of 3 and stretch it (see the broken line in Figure 2)
.

After that, by peeling off the mutually adjacent ends of both membrane materials 3, 3 from the membrane material joint plate part, both membrane materials 3, 3 form the auxiliary membrane 20 as shown by the solid line in FIG. They are bulged upwards due to internal pressure while being connected in series through them. That is, the above-mentioned two membrane materials 3, 3 are attached to the membrane material joint plate portion (
It is separated from the large aluminum channel 6, cable 2, etc.) while maintaining continuity.

In this state, maintenance after completion of the membrane roof or inflation during construction is performed, and after the work is completed, the adjacent ends of both membrane materials 3, 3 are again joined to the membrane material joint plate part, and then both membrane roofs are Auxiliary film 20 from materials 3 and 3
All you have to do is remove it.

In this way, the auxiliary lllI20 is temporarily installed at one or more desired locations on the membrane roof.

"Effect of the Invention J As explained above, according to the present invention, when peeling off the membrane materials adjacent to each other over a predetermined length from the membrane material plate portion, an auxiliary material is provided between the two membrane materials. Since the membrane is temporarily stretched, parts of adjacent membrane materials can be peeled off over a wide range without significantly increasing the opening area, that is, the amount of air leakage. It is equally effective in construction. It also has the advantage of improving operational safety because continuity between the membrane materials can be maintained even after peeling.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the main part of a membrane roof showing one embodiment of the present invention;
Fig. 2 is a cross-sectional view taken along the line nn in Fig. 1, Fig. 3 is a cross-sectional view of the auxiliary membrane zitzinto part, and Fig. 4 is an overall plan view of the air membrane structure.
FIG. 5 is a sectional view of the membrane material dizziness portion. 2...Cable 3...Membrane material 6...Large aluminum channel 20...Auxiliary 1 Odor Figure 1 Figure 2

Claims (1)

[Claims] A membrane material in an air membrane structure, characterized in that, when peeling adjacent membrane materials over a predetermined length from a membrane material joint plate part, an auxiliary membrane is temporarily stretched between the two membrane materials. Peeling method.