JP4020807B2 - Membrane window structure and its construction procedure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a membrane window structure provided in a main membrane such as a membrane structure and a construction procedure thereof.
[0002]
[Prior art]
In recent years, spatial structures such as so-called dome structures and tent structures (membrane structures) have been actively constructed as large-scale structures such as gymnasiums, baseball fields, soccer fields, pavilion facilities, and multipurpose public facilities.
[0003]
[Problems to be solved by the invention]
In these membrane structures, it is mentioned as an advantage that light can be obtained by laying a translucent membrane material on the roof surface, but in order to further improve the daylighting property, like a skylight in a general house, etc. There may be a demand for providing a window on the film surface.
[0004]
However, there have been no cases where window portions have been formed in the membrane material in the past, and its structure becomes a problem, and when it is planned to provide a window portion in a stretched membrane material, the membrane material is already very Since high tension is introduced, if an opening is provided in the membrane window attachment part in order to provide a membrane window, the part becomes a cross-sectional defect and excessive stress is applied to the surrounding membrane material. There is a problem, and even if the applied stress generated in the membrane material is within the allowable value, the opening portion becomes elliptical due to the introduced tension despite the fact that the membrane material is cut into a circular shape. There are also problems such as distortion.
[0005]
On the other hand, it is conceivable that a window is attached to the membrane material in advance before the membrane material is stretched to the structure. Problems such as becoming complicated are expected.
[0006]
Then, the 1st subject of this invention is providing the window structure provided in the film | membrane material of a film | membrane structure. A second problem is to provide a construction procedure for providing a window portion on a stretched film material so that excessive stress is not applied to the film material.
[0007]
[Means for Solving the Problems]
In order to solve the first problem, as the present invention according to claim 1, a fixing portion in which an opening is provided in a stretched main body film and an edge rope is enclosed along the periphery of the opening. Forming film material is welded, and at the periphery of the opening, a frame plate is disposed along the opening shape on the outer peripheral side of the edge rope and on the lower surface side of the main body film, and the upper surface side of the main body film A translucent plate is disposed so as to close the opening, and a presser plate is disposed on the upper surface side along the periphery of the translucent plate, and the fixing passes through the frame plate, the translucent plate, and the presser plate. A membrane window structure is provided in which bolts are arranged at appropriate intervals in the circumferential direction and fastened with a nut member on the facing side.
[0008]
In the first aspect of the present invention, the fixing portion forming film material in which the edge rope is encapsulated is welded along the periphery of the opening of the main body film, and the main body film and the translucent plate are formed at the periphery of the opening. Are fastened with fixing bolts and nut members in a state of being fixed so as to be sandwiched between a presser plate and a frame plate respectively disposed on the upper and lower surfaces. Therefore, the edge rope is fixed along the inner peripheral edge of the frame plate, so that the opening edge of the main body film is firmly fixed to the window. Further, since the tension introduced into the main body film is transmitted to the light transmitting plate at the window portion, the influence of the cross section of the main body film can be eliminated.
[0009]
According to a second aspect of the present invention, there is provided the membrane window structure according to the first aspect, wherein a sealing material is interposed between the main body film and the frame plate and between the main body film and the translucent plate. . By interposing a sealing material at a predetermined location along the circumferential direction of the window portion, water leakage from the window portion can be reliably prevented.
[0010]
According to a third aspect of the present invention, there is provided the membrane window structure according to the first or second aspect, wherein the translucent plate is a resin plate or glass. As the translucent plate, for example, polycarbonate resin, acrylic resin, polyvinyl chloride resin, polymethyl methacrylate resin, polyester resin, these netted resins, glass, tempered glass, netted glass, etc. can be used. is there.
[0011]
According to a fourth aspect of the present invention, there is provided the membrane window structure according to any one of the first to third aspects, wherein the presser plate has a structure divided in the circumferential direction, and a joint between the presser plates is a drainage groove.
[0012]
In order to solve the second problem, as a fifth aspect of the present invention, there is provided a fixing portion forming film material in which an edge rope is enclosed along a window shape to be formed on a stretched main body film. A first procedure of welding;
A frame plate is disposed along the opening shape on the outer periphery side of the edge rope and on the lower surface side of the main body film at the periphery of the window forming scheduled portion, and a light transmitting plate is provided on the upper surface side of the main body film. A presser plate is provided on the upper surface side along the periphery of the translucent plate, and fixing bolts penetrating the frame plate, the translucent plate and the presser plate are arranged at appropriate intervals in the circumferential direction. A second step of fastening with a nut member on the facing side;
And a third procedure for cutting and removing the main body membrane portion surrounded by the frame plate, and a construction procedure for providing a window portion in the membrane material.
[0013]
In the present invention described in claim 5, since all the window component members are attached before the main body film is cut and finally the main body film is cut and removed, the film material is not subjected to excessive stress. A window can be attached to the membrane material.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view of a membrane structure 1 provided with a membrane window 4 according to the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, FIG. Is an exploded view thereof.
[0015]
In the illustrated membrane structure 1, three membrane windows 4, 4... Are provided in the horizontal direction on the north side (upper side of the drawing) of the main body membrane 2 in a plan view, and horizontally on the south side (lower side of the drawing). Three membrane windows 4, 4... Are formed side by side. The membrane window 4 is a circular window portion made of a transparent resin plate such as polycarbonate. The structure that supports the main body membrane 2 is not limited in any way. In the illustrated example, the structure is a skeletal membrane structure that supports the membrane by the skeleton 3. Any of a structure, a cable membrane structure in which a membrane material is stretched on a cable frame stretched in a net shape, an air membrane structure in which the shape of the entire membrane is maintained by a pressure difference between inside and outside, etc.
[0016]
Examples of the main body film 2 include a film material obtained by coating a glass fiber fabric with a resin mainly composed of tetrafluoroethylene resin, a glass fiber fabric having a vinyl chloride resin, chloroprene rubber, chlorosulfonated polyethylene rubber, and the like. Use membrane materials coated with similar materials, polyamide materials, polyaramid-based, polyester-based or polyvinyl alcohol-based fiber fabrics coated with vinyl chloride resin, chloroprene rubber, chlorosulfonated polyethylene rubber or the like. Can do.
[0017]
As shown in FIGS. 2 to 4, the membrane window 4 has an opening 11 formed in the stretched main body membrane 2, and an edge rope 8 is additionally provided along the periphery of the opening 11. Provided. As shown in FIG. 4, the edge rope 8 is attached by using a film material cut into a donut shape in accordance with the shape of the opening 11 of the window, and making a cut from the inner edge to the center of the width in the radial direction. After forming, the inner portion is folded and welded to form the edge rope insertion portion 10a along the inner peripheral edge, and a polyester resin multifilament single yarn, that is, a plurality of fibers, is formed in the edge rope insertion portion 10a. The fixing portion forming film material 10 into which the edge rope 8 made of twisted single yarn is inserted is attached by welding along the periphery of the opening 11 of the main body film 2.
[0018]
A frame with a rubber plate 12 for sealing made of chloroprene rubber or the like interposed on the outer peripheral side of the edge rope 8 and on the lower surface side of the main body film 2 at the periphery of the opening 11 to which the edge rope 8 is attached. A plate 7 is disposed. The frame plate 7 is preferably made of a thin steel material, and as shown in FIG. 6, a ring-shaped member that is continuous in the entire circumferential direction is used. Bolt through holes are formed at appropriate intervals in the circumferential direction.
[0019]
On the other hand, the transparent resin plate 5 made of polycarbonate resin closes the opening 11 with the rubber plate 13 for sealing made of chloroprene rubber or the like interposed on the upper surface side of the main body film 2 corresponding to the frame plate 7. The presser plate 6 is provided on the upper surface side along the periphery of the transparent resin plate 5. Between the rubber sheet for sealing 13 and the main body film 2, sealants 16 and 16 are interposed along the circumferential direction on both sides, and a sealant washer 17 is interposed along the circumferential direction at the intermediate portion. In addition, sealing materials 16 and 16 are interposed between the presser plate 6 and the transparent resin plate 5 along the circumferential direction on both sides.
[0020]
The presser plate 6 is preferably made of a thin steel material, and as shown in FIG. 5, the presser plate 6 is divided into a plurality of members in the circumferential direction, and is divided into four members in the illustrated example, and the joint portion 6 a between the presser plates 6 </ b> A to 6 </ b> D is drained. It is made into a groove and drains rainwater and the like present in the window part to the outside of the window part. In the circumferential direction, bolt through holes are formed at positions corresponding to the bolt through holes of the frame plate 7.
[0021]
The fixing bolts 9, 9,... Penetrating the frame plate 7, the transparent resin plate 5 and the presser plate 6 are arranged at appropriate intervals in the circumferential direction in the state in which the above-described window constituent members are arranged. The nut member 15 is used for fastening. A washer 14 and a sealant washer 17 are interposed on the contact surface between the nut member 15 and the transparent resin plate 5. In this example, the nut member 15 is provided with a cap 18 in view of aesthetics, but may be a normal one.
[0022]
Next, a construction procedure in the case of providing the main membrane 2 with the membrane window 4 having the above structure stretched by post-construction will be described in detail with reference to FIG.
[0023]
First, as shown in FIG. 2A, a circular gauge 19 formed in accordance with the shape of the opening 11 is installed on the upper surface of the main body membrane 2 to which the membrane window 4 is attached. Then, as shown in FIG. 7B, the fixing portion forming film material 10 in which the edge rope 8 is inserted is welded and fixed to the main body film 2 with the gauge 19 as a guide.
[0024]
Next, as shown in FIG. 5C, the gauge 19 is removed, and an opening shape is formed on the outer peripheral side of the edge rope 8 and on the lower surface side of the main body film 2 at the periphery of the window formation scheduled portion. A frame plate 7 is disposed along the transparent resin plate 5 on the upper surface side of the main body film 2, and a presser plate 6 is disposed on the upper surface side along the periphery of the transparent resin plate 5. The fixing bolts 9, 9,... Penetrating the frame plate 7, the transparent resin plate 5 and the pressing plate 6 are arranged at appropriate intervals in the circumferential direction, and fastened by the nut member 15 on the facing side, and the membrane window 4 When all the constituent members are attached, finally, as shown in FIG. 4D, the main body membrane 2 portion surrounded by the frame plate 7 is cut and removed to complete the construction.
[0025]
(Other embodiment examples)
(1) In the above embodiment, the fixing bolt 9 is inserted from the lower surface side of the main body film 2 and the nut fastening is performed on the outer side of the film surface, but the fixing bolt 9 is inserted from the outer side of the film surface. The nut may be fixed inside.
[0026]
(2) The membrane window structure according to the present invention can be installed not only in an existing membrane structure but also in a new membrane structure after the main membrane is stretched.
[0027]
(3) Although the window shape is circular in the above embodiment, any window shape such as an elliptical shape or a polygonal shape such as a quadrangle can be used.
[0028]
(4) In the above embodiment, the window is attached to the ceiling membrane material, but the window can be provided to the wall membrane material by the same procedure.
[0029]
【The invention's effect】
As described in detail above, according to the present invention, it is possible to provide a window membrane structure suitable for the membrane material of the membrane structure, and to the membrane material stretched while preventing excessive stress from being applied to the membrane material. A window can be provided.
[Brief description of the drawings]
FIG. 1 is a plan view of a membrane structure 1 provided with a membrane window 4 according to the present invention.
FIG. 2 is a sectional view of the membrane window 4 (a view taken along the line II-II in FIG. 1).
FIG. 3 is an enlarged view of a main part thereof.
FIG. 4 is an exploded view thereof.
FIG. 5 is an external view of the membrane window 4 (a view taken along line VV in FIG. 2).
6 is an internal view of the membrane window 4 (view taken along line VI-VI in FIG. 2).
FIG. 7 is a procedure diagram for installing the membrane window 4;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Film structure, 2 ... Film material, 4 ... Film window, 5 ... Transparent resin board, 6 ... Holding plate, 7 ... Frame plate, 8 ... Edge rope, 9 ... Fixing bolt, 10 ... Film material for fixing part formation 12 ... 13 Rubber plate for sealing, 15 ... Nut member

Claims (5)

An opening is provided in the stretched main body film, and a fixing portion forming film material in which an edge rope is encapsulated is welded along the periphery of the opening, and at the periphery of the opening, A frame plate is disposed along the opening shape on the outer peripheral side and on the lower surface side of the main body film, and a translucent plate is disposed on the upper surface side of the main body film so as to close the opening. A presser plate is arranged on the upper surface side along the periphery of the optical plate, and fixing bolts penetrating the frame plate, the translucent plate and the presser plate are arranged at appropriate intervals in the circumferential direction, and a nut is provided on the opposite side. A membrane window structure characterized by being fastened by a member. The membrane window structure according to claim 1, wherein a sealing material is interposed between the main body film and the frame plate and between the main body film and the translucent plate. The membrane window structure according to claim 1, wherein the translucent plate is a resin plate or glass. The membrane window structure according to any one of claims 1 to 3, wherein the pressing plate has a structure divided in a circumferential direction, and a joint between the pressing plates is a drainage groove. A first procedure of welding a fixing portion forming film material in which an edge rope is encapsulated to a stretched main body film along a window shape to be formed;
A frame plate is disposed along the opening shape on the outer periphery side of the edge rope and on the lower surface side of the main body film at the periphery of the window forming scheduled portion, and a light transmitting plate is provided on the upper surface side of the main body film. A presser plate is provided on the upper surface side along the periphery of the translucent plate, and fixing bolts penetrating the frame plate, the translucent plate and the presser plate are arranged at appropriate intervals in the circumferential direction. A second step of fastening with a nut member on the facing side;
And a third procedure for cutting and removing the main body membrane part surrounded by the frame plate, and a construction procedure for providing a window in the membrane material.

Images