JP3604510B2 - Simultaneous installation of double membrane - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for simultaneously stretching a double membrane in a membrane structure in which a roof has a dual structure of an outer membrane and an inner membrane.
[0002]
[Prior art]
A membrane structure in which the roof has a dual structure of an outer membrane and an inner membrane is already known, but the main reason for using such a double membrane is to prevent the formation of dew condensation on the inner surface of the outer membrane. The purpose is to remove the snow by receiving it on the membrane, and to slide down snow accumulated on the outer membrane by passing warm air between the outer membrane and the inner membrane.
In this case, the double membrane is usually stretched by first stretching only the inner membrane and then stretching the outer membrane in the steel frame for stretching the membrane material.
[0003]
[Problems to be solved by the invention]
However, in such construction,
{Circle around (1)} The same place on a plane needs to be constructed twice by the same method, and the man-hour required for mounting is large.
{Circle over (2)} In many cases, membrane work is performed at a high place, and since the same place on a plane is constructed twice as described above, there is a high risk of work.
{Circle around (3)} Since the film stretching process takes a long time, it is likely to have an adverse effect such as rainwater intrusion on the internal finishing work.
(4) The restraint time of the large hoist becomes longer.
(5) In general, the cost is considerably high.
And so on.
Thus, the present invention reduces the film stretching process by simultaneously constructing a double film, reduces work at a high place, improves the stretching efficiency and safety, and also reduces the cost. It is what we are trying to get.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that an outer membrane and an inner membrane are superimposed and wound into a roll together at a factory or a site, and the winding roll is carried into an installation site and the installation is performed. At the site, the outer membrane and the inner membrane are simultaneously pulled out from the take-up roll and stretched on a membrane material stretching frame, whereby a double membrane structure having a space between them is simultaneously stretched. I do.
[0005]
The invention according to claim 2 is that, at a factory or a site, the outer membrane integrated in the width direction at a predetermined width required for stretching and the inner membrane divided into two in the width direction are overlapped and rolled together with their outer edges aligned. The take-up roll is carried into the installation site, and the outer film and the inner film are simultaneously pulled out from the take-up roll at the installation site, and the outer edges of both films are both formed into a film material extending frame. After erection, the middle part of the outer membrane is pulled down, and the left and right inner edges of the inner membrane are joined together and pulled down, thereby simultaneously forming a double membrane structure having a space between them. It is characterized by being stretched.
[0006]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the take-up roll is mounted on a movable spreader, and the movable spreader is positioned on a film material stretching frame. The outer film and the inner film are simultaneously pulled out from the winding roll while being moved along the film material stretching frame, and stretched on the film material stretching frame.
[0007]
According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, the take-up roll is mounted on a lifting type spreader, and the lifting type spreader is lifted by a hoist to stretch the film material. The outer film and the inner film are simultaneously pulled out from the winding roll while being moved along the film material extending frame while being positioned above the installation frame, and stretched onto the film material installation frame. .
[0008]
According to a fifth aspect of the present invention, in the first, second, third, or fourth aspect of the present invention, the outer edge of the outer membrane and the inner membrane simultaneously drawn from the winding roll is formed by a film material. First, temporarily fix the tension frame with the film fixing bolts and nuts. After the temporary fixing of the required range is completed, adjust the position of each part comprehensively, and then fully tighten the film fixing bolts and nuts. It is characterized by being erected.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The drawings show the embodiments according to the first to fifth aspects of the present invention. FIG. 1 shows a work procedure in which the outer membrane 1 is integrated in the width direction at a predetermined width required for stretching, and the inner membrane 2 is divided into two pieces in the width direction. This will be described with reference to FIG.
(1) At a factory or site, an outer membrane 1 integrated in the width direction and an inner membrane 2 divided in the width direction with a predetermined width required for stretching are overlapped together with their outer edges aligned. It is wound up in a roll shape, and the winding roll 3 is mounted and carried into the site.
(2) At the installation site, the outer membrane 1 and the inner membrane 2 are simultaneously pulled out from the winding roll 3 and the outer edges of the two membranes 1 and 2 are both erected on the upper member 5 of the membrane material extending frame 4. An intermediate portion of the outer membrane 1 is pulled downward by a tie rod 7 or the like standing upright from a lower member 6 of the membrane material extending frame 4 via an outer membrane holding cable 8 or the like.
(3) Subsequently, both inner edges of the left and right inner membrane materials 9 and 10 in the inner membrane 2 are joined in a water-tight manner, and are connected to an intermediate point of the tie rod 7 and the like via the inner membrane holding cable 11 and the like. As a result, the outer membrane 1 and the inner membrane 2 form a V-shape with different angles, and a double membrane structure having a space 12 therebetween is simultaneously stretched.
In this case, the inner membrane 2 is divided into two parts, but the integral part can be similarly constructed. However, in this case, the inner membrane 2, which is wider than the outer membrane 1, needs to be appropriately folded and wound into a roll. Further, in order to assemble the tie rod 7 or the like, the outer membrane holding cable 8 or the like, a slit or the like may be formed at a key portion of the inner membrane 2.
[0010]
As one of the means for expanding at the installation site, there is a case where a movable spreader 13 shown in FIGS. 2 and 3 is used. In this case, the take-up roll 3 is mounted on the movable spreader 13 so that the movable spreader 13 is positioned on the upper member 5 of the membrane stretching frame 4 and the upper member 5 is stretched on the membrane 5. While being slowly moved by the chill climber 14 along the installation frame 4, the outer membrane 1 and the inner membrane 2 are simultaneously pulled out from the winding roll 3 and stretched on the membrane material installation frame 4. The movable spreader 13 is suitable for a place where the degree of inclination is relatively small.
[0011]
Another example of the expanding means is a lifting type spreader 18 shown in FIG. In this case, the take-up roll 3 is mounted on a lifting-type spreader 18, the lifting-type spreader 18 is lifted by a lifting machine 19, and is positioned above the film-material mounting frame 4. The outer membrane 1 and the inner membrane 2 are simultaneously pulled out from the winding roll 3 while being moved along the inner wall 4, and are stretched on the membrane stretching frame 4. The lifting spreader 18 is suitable for a place where the use of the movable spreader 13 is difficult and the degree of inclination is relatively large.
[0012]
The movable spreader 13 and the lifting spreader 18 are preferably moved at a right angle to the moving direction at all times, and it is preferable to perform the movement in units of about 5 m while confirming this. In the movable spreader 13, when the distance between the upper members 5 of the film material extending frame 4 changes, the wheel width is adjusted in a timely manner.
2, 3, and 4, reference numerals 15, 16, and 17 denote temporary suspension scaffolds.
[0013]
As a specific example of the structure to which the above simultaneous stretching construction method is applied, there is a dome-shaped membrane structure suitable for various sports facilities, gymnasiums, and the like as shown in FIGS.
In this dome-shaped membrane structure, as shown in FIGS. 5 to 7, a dome-shaped membrane material extending frame 4 made of steel is constructed, and an outer membrane is formed on the membrane material extending frame 4 as described above. 1 and the intima 2 are simultaneously stretched.
As shown in FIGS. 6 to 8, the film material extending frame 4 includes an upper chord material 21 and a lower chord material 22 each comprising a pair of parallel members (see FIG. 3), and sandwiched between the parallel members. The large and small curved trusses 20 composed of the assembled bundle members 23 and the brace members 24 are arranged at predetermined intervals, and the short-side arch members 25 each composed of a pair of parallel members are orthogonally arranged at the intermediate portion of each bundle member 23. Thus, the entire shape is formed in a dome shape.
A girder member 26 is provided on each upper chord member 21, and these girder members 26 are used as the upper member 5, and their short side arch members 25 are used as the lower member 6. The film 2 is simultaneously stretched.
5 and 6, reference numeral 27 denotes a top ventilation port provided at an appropriate position.
[0014]
As shown in FIG. 9, a large number of film fixing bolts 28 are implanted at a predetermined pitch on the upper edge of the girder member 26 by welding, and a base rubber sheet 29 is provided on the upper surface of these girder members 26. Lay it. In the girder material 26 using the movable spreader 13, the base rubber sheet 29 may be divided into left and right parts so that the wheels of the movable spreader 13 can be mounted.
[0015]
In order to secure the strength, stability, and the like of the stretching, the common outer rope 1 (FIG. 9) is provided in advance in the width direction of the outer membrane 1 to secure the strength and stability of the stretching. A dedicated rope 31 (FIG. 13) is provided at the center, and dedicated ropes 32 and 33 (FIG. 15) are also provided at both inner edges of the left and right inner membrane materials 9 and 10 in the intima 2 in the material length direction. It is attached to
[0016]
Then, the winding roll 3 formed by the outer membrane 1 and the inner membrane 2 is spread by the movable spreader 13 or the lifting spreader 18 in a unit of about 5 m as described above. As shown in FIG. 9, the outer membrane 1 and the inner membrane 2 are simultaneously pulled out, and the outer edges of both are placed on the base rubber sheet 29 of the beam member 26, and the respective film fixing bolts 28 are attached to the outer edges of both. , A rubber sheet 34, a holding plate 35, etc. are fitted to these film fixing bolts 28, and a nut 36 is screwed in. First, the outer edge is temporarily fixed, and then the position is sequentially adjusted by the amount moved by the spreader. And then tighten it. In addition, these are covered with a flap film 37 or the like.
[0017]
As shown in FIGS. 10, 11, 13 and 14, a reinforcing cloth 38 is applied to the upper surface of the outer film 1 so that the outer cloth fixing plate 39 having a horizontal band shape is formed on both sides of the lower surface of the reinforcing cloth 38. Are sandwiched via a rubber sheet 40 so as to have a Y-shaped cross section. For this clamping, a U plate 41 (FIGS. 10 and 11) is provided at the position of the tie rod 7, a U-shaped hanging member 42 (FIGS. 13 and 14) is provided at other places, and the outer membrane fixing plates 39 on both sides are respectively provided. And tightened with bolts and nuts 43.
As shown in FIGS. 13 and 14, an outer membrane holding cable 8 is passed through the U-shaped hanging metal 42, and a proper position of the outer membrane holding cable 8 is provided as shown in FIGS. Then, a cable clamp 44 is tightened, and a blade plate 45 continuously connected to the upper end of the tie rod 7 is joined to the cable clamp 44 with bolts and nuts 47 and 48 via a damper plate 46. The lower end of the tie rod 7 is An anchor base 49 fixed in place on the short side arch material 25 serving as the lower member 6 of the tension frame 4 is connected to an anchor base 49 by a nut 50 via a rubber washer 51 and a flat washer 52 so as to be adjustable in height. The cable 8 and thus the middle part of the outer membrane 1 is pulled downward.
[0018]
Except for the position of the tie rod 7, the inner edges of the left and right inner membrane materials 9 and 10 in the inner membrane 2 abut water-tightly from both sides via waterproof seals 53 as shown in FIG. The inner film fixing plate 55 is sandwiched via the rubber sheet 54. In this sandwiching, the U-shaped plate 56 is applied to the outside of the intima fixing plate 55 on both sides at various places, and is fixed by the bolt and nut 57. At the position of the tie rod 7, as shown in FIGS. 10 to 13, the above-mentioned blade plate 45 is inserted in the middle of the waterproof seal 53 in an orthogonal manner. However, since the thickness of this portion increases due to the presence of the blade plate 45, the intima fixing plate 55 is partially divided into parts, which are directly fastened separately with bolts and nuts 58.
Then, as shown in FIGS. 15 and 16, the U-shaped plate 56 is passed through the inner-membrane holding cable 11, and the inner-membrane holding cable 11 is fixed to the blade plate 45 by a wire clip 59. Then, the tie rod 7 pulls the middle portion of the inner membrane 2 and the middle portion of the inner membrane 2 down. However, the adjustment between the outer membrane 1 and the inner membrane 2 is performed by adjusting the connection depth between the damper plate 46 and the blade plate 45.
[0019]
Warm air is allowed to pass through the space 12 between the outer membrane 1 and the inner membrane 2 of the membrane roof having the V-shaped cross section as described above. As a result, snow accumulated on the outer membrane 1 can be slid down. Further, the inner membrane 2 receives and removes dew condensation generated on the inner surface of the outer membrane 1, and prevents the inner membrane 2 from dripping into the membrane structure.
[0020]
【The invention's effect】
According to the first to fifth aspects of the present invention, at the installation site of the outer membrane and the inner membrane, the outer membrane and the inner membrane are simultaneously drawn out from the winding roll in which the outer membrane and the inner membrane are stacked and wound together. To the double-layer structure with space between each other at the same time.
{Circle around (1)} It is not necessary to construct the same place on a plane twice by the same method, and the man-hour required for mounting can be greatly reduced.
{Circle around (2)} The work at high places is reduced, and the danger of work can be reduced.
(3) The film stretching process can be greatly reduced, the construction period can be shortened, and adverse effects such as rainwater intrusion during internal finishing work can be reduced.
(4) The restraint time of the large hoist can be reduced, and the total number can be reduced.
(5) Temporary work can be greatly reduced.
(6) Overall, the cost can be significantly reduced.
(7) Horizontal development to similar construction can be expected.
[0021]
In addition, according to the second aspect of the present invention, since the inner membrane is divided into two parts, even if the width required for stretching the inner membrane is large, the outer membrane and the inner membrane can be easily wound without trouble in the roll-shaped winding. They can be stacked and can be easily wound.
In addition, the work of stretching can be easily performed due to the flexibility of the two-piece body.
[0022]
Further, according to the third aspect of the present invention, the take-up roll is mounted on the movable spreader, and the movable spreader is moved along the film material stretching frame on the film material stretching frame on the outer membrane while moving the movable spreader on the film material stretching frame. Since the inner film and the inner film are simultaneously pulled out from the winding roll and stretched on the film material stretching frame, the stretching operation is mechanically smooth, easily, quickly, and in a place where the degree of inclination is relatively small. , Safe to do.
[0023]
Further, according to the invention of claim 4, the take-up roll is mounted on the lifting type spreader, and the lifting type spreader is lifted by the lifting machine to be positioned above the film material mounting frame, and the film material mounting is performed. Since the outer membrane and the inner membrane are simultaneously pulled out from the winding roll while being moved along the frame and stretched on the membrane material stretching frame, even in a place where the degree of inclination is large, the stretching operation is performed mechanically. It can be performed smoothly, easily, quickly and safely.
[0024]
According to the fifth aspect of the present invention, the outer edges of the outer membrane and the inner membrane simultaneously pulled out from the take-up roll are temporarily fixed to the film material extending frame with the film fixing bolts and nuts. After the temporary fixing is completed, the position of each part is adjusted comprehensively, and then the film fixing bolts and nuts are fully tightened and installed, so that the outer membrane and the inner membrane can be properly stretched in a well-balanced manner. .
[Brief description of the drawings]
FIG. 1 is a work procedure explanatory view showing an embodiment according to a method for simultaneously stretching a double membrane according to the present invention.
FIG. 2 is an explanatory perspective view showing a working state by the movable spreader in the embodiment.
FIG. 3 is a sectional front view of FIG.
FIG. 4 is an explanatory perspective view showing a working state by the lifting spreader in the embodiment.
FIG. 5 is a plan view showing a dome-shaped membrane structure employing the double membrane simultaneous stretching method of the present invention.
FIG. 6 is a sectional view taken along line AA of FIG. 5;
FIG. 7 is a sectional view taken along line BB of FIG. 5;
8 is a cutaway front view showing a part of FIG. 6 in an enlarged manner.
FIG. 9 is a cutaway front view showing a further enlarged main part of FIG. 8;
FIG. 10 is a cutaway front view showing another main part of FIG. 8 in a further enlarged manner.
11 is a cutaway side view of the portion shown in FIG.
FIG. 12 is an enlarged sectional view taken along line CC of FIG. 11;
FIG. 13 is an enlarged vertical sectional front view of a central portion in the width direction of the outer membrane of the membrane structure and a tie rod non-joined portion.
FIG. 14 is a cutaway side view of the portion shown in FIG.
FIG. 15 is an enlarged vertical sectional front view of a central portion in the width direction of the inner membrane of the same membrane structure and at a tie rod non-joining portion.
16 is a cutaway side view of the portion shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer membrane 2 ... Inner membrane 3 ... Take-up roll 4 ... Membrane tension structure 5 ... Upper member 6 ... Lower member 7 ... Tie rod 8 ... Outer membrane holding cable 9, 10 ... Inner membrane material 11 ... Inner membrane Holding cable 12 Space 13 Mobile spreader 14 Chill climber 15, 16, 17 Temporary suspension scaffold 18 Lifting spreader 19 Lifting machine 20 Curved truss 21 Upper chord 22 Lower chord 23 Bundle 24 Brace material 25 ... Short side arch material 26 ... Girder material 27 ... Top ventilation port 28 ... Film anchor bolt 29 ... Base rubber sheet 30, 31, 32, 33 ... Rope 34 ... Rubber sheet 35 ... Pressing plate 36 ... Nut 37 ... Flap film 38 Reinforcement cloth 39 Outer membrane fixing plate 40 Rubber sheet 41 U plate 42 U-shaped hanging hardware 43 Bolt / nut 44 Cable clamp 45 Feather plate Plate 46 Damper plates 47 and 48 Bolts and nuts 49 Anchor base 50 Nuts 51 Rubber washers 52 Flat washers 53 Waterproof seals 54 Rubber sheets 55 Inner membrane fixing plates 56 U-shaped plates 57 and 58 Bolt / Nut 59 ... Wire clip

Claims (5)

At the factory or site, the outer membrane and the inner membrane are stacked and wound together in a roll, and the winding roll is carried into the installation site. At the installation site, the outer membrane and the outer membrane are separated from the winding roll. A method for simultaneously constructing a double membrane, wherein a double membrane structure having a space therebetween is simultaneously stretched by simultaneously extracting an inner membrane and extending the inner membrane into a membrane stretching frame. At the factory or site site, the outer membrane integrated in the width direction at the predetermined width required for stretching and the inner membrane divided into two in the width direction are overlapped with the outer edges aligned and wound together in a roll shape, and this winding is performed. The take-up roll is carried into the installation site, and at the installation site, the outer membrane and the inner membrane are simultaneously pulled out from the take-up roll, and the outer edges of both membranes are erected together on a membrane material-stretched frame. By pulling down at the middle part, and joining the left and right inner edges of the inner membrane and pulling it down, a double membrane structure having a space between them is simultaneously stretched. The method of simultaneous construction of double membrane. Equipped with a take-up roll on a movable spreader, the movable spreader is positioned on the film-stretched frame, and the outer film and the inner film are wound while moving along the film-stretched frame. 3. The method for simultaneously stretching a double membrane according to claim 1 or 2, wherein the double membrane is simultaneously pulled out from the roll and stretched on the membrane stretching frame. The take-up roll is mounted on a lifting type spreader, and the lifting type spreader is lifted by a lifting machine to be positioned above the film material stretching frame. 3. The method for simultaneously stretching a double membrane according to claim 1 or 2, wherein the membrane is pulled out from the winding roll at the same time and stretched on a membrane stretching frame. The outer edges of the outer membrane and inner membrane that were simultaneously pulled out from the take-up roll are temporarily fixed to the film material stretched frame with the film fixing bolts and nuts. 5. The double-membrane simultaneous stretching construction method according to claim 1, wherein the position is adjusted, and then the film fixing bolts and nuts are fully tightened and installed.

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