JPH0742416A - Coupling structure of membrane - Google Patents

Abstract

PURPOSE:To correct a fixing position between a membrane and a cable for supporting the membrane in a simple manner. CONSTITUTION:Membranes 10 are joined together by a method wherein a connection end 10a is interposed between a belt-shaped packing 16 and a coupling auxiliary plate 18, and a main coupling member 12, the belt-shaped packings 16, the connection ends 10a, and the plate 18 are tightly clamped by means of bolts 22 and nuts 22a. Cables 14 are inserted loosely into a pair of inverted OMEGA-shaped cable holders 24 provided on either end of the inner side of the member 12. A cable setting bolt 28 is screwed into a weld nut 26 welded to the member 12 to fix the cables 14 by the bolt 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a film body, and more particularly to a connecting structure for a film body which can easily and accurately fix a cable supporting the film body and the film body.

[0002]

2. Description of the Related Art In recent years, a roof for a structure such as a large space facility having a pillarless structure such as a dome has been constructed as a membrane roof. The membrane roof is formed of a waterproof flexible membrane so as to cover the upper end of the outer wall surrounding the large space facility. The membrane roof is inflated by injecting air into the facility, and in this inflated state, a dome-shaped roof having a bulged central portion is formed. Further, the inflated membrane roof is supported by a cable stretched at appropriate intervals.

By the way, since the membrane roof needs to continuously cover a large space facility, its area becomes significantly large. Therefore, the membrane roof is formed by connecting a plurality of membrane bodies cut into a predetermined shape to each other. The whole is formed. At this time, the film bodies are connected to each other via a connecting fitting as disclosed in, for example, Japanese Utility Model Publication No. 2-24857 (E04H 15/54). That is, the connection fitting is provided with inner and outer presser metal pieces arranged on both sides of the film body across the connecting end portions of the film body, and bolts arranged on the both sides of the presser metal articles at appropriate intervals, It is configured to be tightened via a nut.In addition, a cable retainer is provided facing the inner retainer, and the cable is sandwiched between these inner retainer and cable retainer, and the bolt and nut are used together. It is supposed to be tightened.

[0004]

However, in such a conventional structure for connecting a film body, the cable is also fixed by bolts and nuts for connecting and fixing the film body. It is necessary to connect the body and fix the cable at the same time. For this reason, the connection of the membrane body is usually performed on the ground, and then pressurized air is injected into the inside to inflate the connected membrane body, but the cable is also fixed to the membrane body side in advance on the ground. . However, when the membrane and the cable are fixed on the ground, the relative position between the membrane and the cable is slightly different due to the looseness of the membrane and the tensile force of the membrane when the membrane is inflated. Since the cable does not work evenly in the length direction of the cable and the tensile force may partially act, the safety factor of the cable increases, the cable becomes large in diameter, and the weight increases. was there.

In view of the above-mentioned conventional problems, the present invention provides a connecting structure for a film body in which the fixing position of the film body and a cable for supporting the film body can be easily optimized. With the goal.

[0006]

Means for Solving the Problems In order to achieve the above object, the present invention comprises a cable arranged along at least a connecting portion of the film body, and the film body is configured to be supported by the cable. In the connection structure of, a main connecting member having a predetermined length is arranged across the connecting end portions of the film body to be connected, and the connecting end portions of the film body are provided on both sides of the main connecting member. While connecting the film body by mounting, while providing a cable holding member for inserting and holding the cable in the main connecting member, forming a screw hole communicating in the cable holding member in the main connecting member,
It is configured by screwing a cable tightening bolt into this screw hole.

Further, it is preferable that the cable holding members are provided at both ends of the main connecting member, and cable tightening bolts are provided corresponding to the respective cable holding members.

[0008]

In the structure for connecting a film body of the present invention having the above structure, the connection of the film body is performed by attaching the connecting end portions to both sides of the main connecting member, and is provided on the main connecting member. After inserting the cable through the cable holding member, the cable can be fixed by tightening the tightening bolts screwed into the screw holes formed in the main connecting member. Therefore, the work of connecting the film body is performed on the ground, the cable is inserted into the cable holding member on the ground at the same time as the work of connecting the film body, and the connected film body is inflated in this state. Then, by tightening the tightening bolt in the inflated state of the film body, the cable can be fixed in a state where the tension of the film body and the tension of the cable are equal over the entire length. Therefore, it is possible to prevent the tensile force of the film body from acting on the entire length of the cable and to partially apply an excessive load to the cable, thereby reducing the safety factor of the cable.

Further, the cable holding members are provided at both ends of the main connecting member, and cable tightening bolts are provided so as to correspond to the respective cable holding members, so that each main connecting member is supported at two points with respect to the cable. It is possible to stabilize the main connecting member to facilitate the work of connecting the film bodies.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3 show an embodiment of a film body connection structure according to the present invention. FIG. 1 is a cross-sectional view of a film body connection portion, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. FIG. 3 is a perspective view in which a main part of a film body connecting portion is cross-sectioned.

That is, as shown in FIGS. 1 to 3, in the film body connection structure of this embodiment, the film bodies 10 to be connected are connected via the main connecting member 12, and The cable 14 is routed between the connecting portions of the membrane bodies 10 and 10,
The film bodies 1 connected by the cables 14 respectively
0, 10 are supported.

The main connecting member 12 is arranged so as to straddle between the connecting end portions 10a, 10a of the film bodies 10, 10 to be connected, and is made of a metal plate such as stainless steel or aluminum in a V shape at a loose angle. It is formed in a bent predetermined length L (see FIG. 2). Long strip-shaped packings 16 and 16 are arranged on both sides of the outside of the main connecting member 12 (upper side in the figure), and the connection assistance is provided by straddling the outer side of the band-shaped packings 16 and 16 (upper side in the figure). The plate 18 is arranged. In addition, hook portions 16a, 16a are formed on both side end portions of the main connecting member 12 of the band-shaped packings 16, 16, and the hook portions 16a, 16a are fitted to both end portions of the main connecting member 12. ing. The connection auxiliary plate 18
Is formed in a strip shape having long sides in the connecting direction of the film bodies 10, 10, and a pair is arranged at both ends of the main connecting member 12.

On the other hand, the connection end portion 10 of the film bodies 10, 10
The cords a and 10a are wound around the cords 20 and folded back, and the folded back portions are polymerized and fused. Then, the connecting end portions 10a, 10a are sandwiched between the band-shaped packings 16, 16 and the connection auxiliary plate 18, and the main connecting member 12, the band-shaped packing 16, the connection end portion 10a and the connection auxiliary plate 18 are bolted to each other. So that the nut 22a is tightened. At this time, the winding 20 of the connecting ends 10a and 10a is locked to the inner ends of the band-shaped packings 16 and 16.

A pair of cable holding members 24 are provided at both ends of the inside of the main connecting member 12 (downward in the figure) by bending a strip-shaped metal plate in a reverse Ω shape and welding the both ends. The cable 14 is inserted into the cable holding member 24 in a loosely fitted state. A weld nut 26 as a screw hole is welded to an opening formed in the main connecting member 12 in correspondence with the arrangement position of the cable holding member 24, and a cable tightening bolt 28 is attached to the outside of the weld nut 26 (see FIG. It is designed to be screwed in from above. A cable pressing plate 30 is fixed to the tip of the tightening bolt 28 inserted into the cable holding member 24, and a jig for tightening the cable tightening bolt 28 is inserted into the connection assisting plate 18. The opening 18a is formed.

When the cable 14 is inserted into the cable holding member 24, a belt-shaped C ring 32 is fitted on the outer periphery of the portion where the cable 14 is located inside the cable holding member 24, and the C ring 32 tightens the C ring 32. It is designed to prevent damage when the bolts 28 are tightened.

With the above-described structure, in the connecting structure of the film body of this embodiment, the connecting ends 10a, 10a are sandwiched between the band-shaped packing 16 and the auxiliary connecting plate 18 on both sides of the main connecting member 12. It is designed to be attached, and
The cable 14 for supporting the film bodies 10, 10 is fixed by being inserted into the cable holding member 24 provided on the connecting member 12 and tightened by the tightening bolt 28. Therefore, in order to connect the film bodies 10 and 10, the main connecting member 12 and the connecting end portions 10a and 10a are mounted on the ground, and at the same time, the cable 14 is inserted into the cable holding member 24. Then, the film body 10 is inflated in this state, and the cable tightening bolts 28 are tightened in this inflated state, whereby the film body 10
The cable 14 can be fixed in a state where the tension of the cable 14 and the tension of the cable 14 are equal over the entire length. For this reason, it is possible to prevent the tensile force of the film body 10 from acting on the entire length of the cable 14 and to partially apply an excessive load to the cable 14.
The safety factor can be reduced to reduce the diameter, and the entire membrane roof can be reduced in weight.

Further, in this embodiment, the cable holding members 24 are provided at both ends of the main connecting member 12, and the cable tightening bolts 28 are provided so as to correspond to the respective cable holding members 24. Since it is possible to support the cable 14 at two places, the film body 10,
By inserting the cable 14 into the cable holding member 24 before the connection of 10, the main connecting member 12 can be stabilized and the connection work of the film body 10 can be performed more easily.

Further, in this embodiment, the metal fitting for connecting the film bodies 10, 10 is a main connecting member 1 which is simply a bent metal plate.
Since it is composed of 2 and the connecting auxiliary plate 18, etc., the weight of the connecting portion can be reduced.

By the way, in this embodiment, the film bodies 10 and 1 are
No. 0 connection end portions 10a, 10a are branched into bifurcated connection films 34, 34, and these connection films 34, 34 are formed into the film body 1
Since the fasteners 36 are connected to each other with the airtight structure by covering the outside of the connection portions of the membranes 0 and 10, it is possible to reliably prevent air from leaking from the connection portions of the film bodies 10 and 10.

[0020]

As described above, in the connecting structure of the film body according to the first aspect of the present invention, the cable holding member is provided in the main connecting member for attaching the connecting end portions of the film body to both sides.
The cable can be fixed by tightening the cable inserted through the cable holding member with the tightening bolt screwed into the screw hole formed in the main connecting member. Therefore, at the same time as performing the work of connecting the film body on the ground, the cable is inserted into the cable holding member on the ground at the same time as the work of connecting the film body, and after inflating the film body in this state, tighten the tightening bolts. Since it can be tightened, the cable can be fixed in a state in which the tension of the film body and the tension of the cable are equal over the entire length. For this reason, the tensile force of the membrane acts on the entire length of the cable to prevent an excessive load from being partially applied to the cable, reducing the safety factor of the cable and, in turn, reducing the diameter of the cable. By achieving the above, the weight of the entire membrane roof can be reduced.

According to the second aspect of the present invention, the cable holding members are provided at both ends of the main connecting member, and the cable tightening bolts are provided in correspondence with the respective cable holding members. The tie member can be supported on the cable at two points. Therefore, the main connecting member is stabilized to facilitate the work of connecting the film bodies, and further,
It has various excellent effects that the work of connecting the film bodies can be performed quickly and surely while saving labor.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a film body connection portion showing an example of a film body connection structure of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA in FIG.

FIG. 3 is a perspective view showing a cross section of a main part of a film body connecting portion showing an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Membrane body 10a Connection end part 12 Main connecting member 14 Cable 16 Strip packing 18 Connecting auxiliary plate 24 Cable holding member 26 Weld nut (screw hole) 28 Tightening bolt 34 Connecting film

Claims (2)

[Claims] 1. A connection structure of a film body, comprising a cable arranged along at least a connection part of the film body, wherein the cable supports the film body, and a connection end portion of the film body to be connected. A main connecting member having a predetermined length that is disposed straddling between the main connecting members is attached to both sides of the main connecting member to connect the film members to the main connecting member. While a cable holding member for inserting and holding the cable is provided, a screw hole communicating with the cable holding member is formed in the main connecting member, and a cable tightening bolt is screwed into the screw hole. Connection structure of the film body. 2. A connection structure for a film body, wherein the cable holding members are provided at both ends of the main connecting member, and cable tightening bolts are provided corresponding to the respective cable holding members.