JP2987627B1 - Membrane roof tension introduction device - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To work from above on a membrane roof when initial tension is introduced into a membrane member or when initial tension is reduced due to creep and tension is re-introduced, an aerial work vehicle or a large temporary installation Scaffolding is not required, which not only reduces costs, but also improves workability, secures work safety, and obtains a membrane roof tension introduction device that can easily treat dew condensation on membrane members. . SOLUTION: A fastening metal 5 is sandwiched from the front and back surfaces of the membrane members 2a and 2b along the edges in the direction of the edges, and a pulling bolt 10 and a nut 13 arranged at appropriate intervals on a support member 3 as a roof frame. In the tension introducing device for a membrane roof in which the fastener 5 is connected to be able to be pulled in the direction of the support member 3 and a waterproof cover 15 that covers the stopper 5 is detachably attached thereto, The support member 3 is penetrated and attached, the bolt head 10a is positioned on one side of the support member 3, and the pulling nut 13 is positioned on the other side.
Was attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension introducing device for a membrane roof constituting a roof such as a dome.

[0002]

2. Description of the Related Art For example, a dome-shaped roof of a sports facility such as a baseball stadium uses a membrane roof using a membrane member because it can be easily constructed in a dome shape and can be easily opened and closed. However, such a membrane roof is, for example, shown in FIG.
As shown in FIG. 6, the edges of the membrane members 2a, 2b,... Divided into a plurality of parts are attached to the main member 1 constituting the structure that is the roof frame.

In order for the membrane members 2a and 2b to function as a roof, they must be tensioned to maintain tension, and a tension introducing device for this purpose is provided on the membrane roof. Such tension introducing devices are roughly classified into two types. One of them is a device in which tension devices are attached at regular intervals around the membrane members 2a and 2b and are pulled one by one in a predetermined direction. The other is to apply tension to 2a and 2b, and the other is to apply tension to the whole by pushing up a pole from below, or to apply tension by drawing in a holding cable attached to the membrane members 2a and 2b. Then, tension is applied to the whole by moving the main part.

[0004] The structure of the membrane roof provided with the tension introducing device 23 as described above will be described. For example, the main member 1 which is a structure made of a steel pipe is elongated in the longitudinal direction of the main member 1. The plate-shaped support member 3 is erected by welding or the like, and a tension introducing device 23 is attached to the support member 3.

In the tension introducing device 23, pulling bolts 24 are attached to both sides of the support member 3 in a direction perpendicular to the length direction so as to face each other. The angle member 4 is fastened and fixed to the support member 3 with a nut 25. Then, a suitable number of spacers 26 are provided between the vertical portion of the angle member 4 and the support member 3 to secure a space for drawing the membrane members 2a and 2b.
In the drawing, reference numeral 27 denotes a falling prevention member of the spacer 26, which is horizontally protruded from the lower portion of the angle member 4 toward the support member 3.

In this manner, with the horizontal portion of the angle member 4 protruding outward from the support member 3, the vertical portions stand on both sides of the support member 3 with an interval from the support member 3. A bolt 6 and a nut 7 are provided above the horizontal portion of the angle member 4.
Then, the fixing hardware 5 of the film members 2a and 2b is fixed. The fixing metal member 5 includes two substantially thin plate-shaped members 5a and 5b.
Was combined up and down.

Then, the two substantially thin plate-like bodies 5a, 5b
The ends of the membrane members 2a and 2b are sandwiched between them, and the bolts 6 and the nuts 7 fix the membrane members 2a and 2b together with the metal fittings 5 to the angle member 4. 28 in the figure
Shows a water-stop cover that covers the upper part of the stopper metal 5, for example, using chloroprene rubber as a material having elasticity.

The water stop cover 28 has an upper end attached via a gasket 8 to an upper part of a receiving member 29 having an approximately H-shaped cross section made of an extruded aluminum material fixed to the upper part of the support member 3, and the lower end is folded inward and further outward. Membrane members 2a, 2b
Of the holding portion 28a. As a result, the membrane members 2a and 2b are sandwiched between the two substantially thin plate-like bodies 5a and 5b of the fastening metal member 5 together with the sandwiching portion 28a. The film members 2a, 2
For b, for example, a glass fiber cloth coated with a tetrafluoroethylene resin is used.

The roof membrane members 2a, 2b,... Divided into a plurality of pieces in this manner are drawn together with bolts 24 and nuts 25 by pulling the fasteners 5 attached to the respective peripheral edges at appropriate intervals through the angle members 4. It is fastened to the support member 3 and fixed to the main member 1.

In this case, in order to introduce tension to the membrane members 2a, 2b,... At the initial stage of construction, the fixing member 5 is fixed by rotating the nut 25 so that the angle member 4 is supported.
, But the membrane members 2a, 2
In order to cope with the initial tension decrease due to creep in b ... etc., the spacer 27 is detachably interposed between the angle member 4 and the support member 3 as described above in preparation for re-introducing the tension. A gap is provided between the angle member 4 and the support member 3.

In order to reduce the initial tension and re-introduce the tension, the nut 25 is loosened once, the spacer 26 is removed, and the nut 25 is tightened again. Angle wood 4 along 24
Moves in the direction of the support 3. As a result, angle material 4
The fastener 5 fixed to the upper horizontal portion also moves in the direction of the support member 3, whereby the ends of the membrane members 2a and 2b are pulled in the direction of the support member 3, and the tension is re-introduced.
The membrane members 2a and 2b are tightened again.

[0012]

The work of introducing the initial tension to the membrane members 2a and 2b is performed by assembling the membrane members 2a and 2b and applying a tension in advance, and then lifting up or installing a large temporary scaffold. Since they were working in high places in a cross-section, the workability was poor and there was a danger, and the cost required for temporary construction was high.

When the tension is re-introduced, since the tightening nut 25 is located below the angle member 4,
Pull bolts from under the roof using aerial work vehicles
24, the work to re-tighten the nut 25 may be dangerous work at high places. In addition, for high ceilings,
Restrictions were imposed on the height of the work platform, which necessitated the construction of a temporary scaffold, which resulted in poor workability and increased costs.

Further, the membrane members 2a, 2b
Has almost no heat insulating properties in terms of material, so that dew condensation easily occurs on the film surface, and the condensed water runs down the surface of the film members 2a and 2b and drops at the place of the fastening hardware 5, but this No special measures were taken, and no treatment of dew water was made.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art and to introduce an initial tension to the membrane member.
When initial tension is reduced due to creep and tension is re-introduced, aerial work vehicles and large-scale temporary scaffolds are not required, which not only reduces costs but also improves workability and safety of work. It is another object of the present invention to provide a membrane roof tension introducing device which can secure the water content of the membrane member and can easily treat the condensed water of the membrane member.

[0016]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention firstly provides a structure which is a roof frame in which a metal fitting is sandwiched from the front and back sides of a peripheral edge of a membrane member along an edge direction. The stoppers are connected to pulling bolts and nuts arranged at appropriate intervals, and the stoppers are connected so as to be able to be pulled toward the structure, and a water stop cover is detachably attached to the stoppers. In the tension introducing device for a membrane roof that covers the fasteners with the water stop cover, the pulling bolt is attached by penetrating the structure, and the bolt head is positioned on one side of the structure with the pulling bolt interposed therebetween. The head portion of the pull bolt is fixed to the lower vertical portion of the angle member, the horizontal portion of the angle member is fixed to the fastening metal, and the pull nut is attached to the other side of the pull bolt. It is an effect.

Secondly, the pulling bolt and the nut are connected to the fasteners attached to the membrane members disposed on both sides of the structure, and the adjacent bolts and nuts are alternately connected to the fasteners of the membrane members on different sides. It is intended to be linked to

Third, the invention is characterized in that a spacer for securing a space for drawing the membrane member is detachably interposed between the angle member and the structure.

Fourth, the gist is formed by extending the lower portion of the water-stop cover below the membrane member and bending the lower end of the extension upward to form a gutter-like portion.

According to the first aspect of the present invention, the bolt head for pulling is located on one side of the structure and the nut is located on the other side. If there is no member for coupling to the fitting and the upper water-stop cover is removed, a work space can be secured above the nut. Therefore, it is possible to use this work space to tighten the nuts from the upper part of the roof and to introduce tension.This eliminates the need to build temporary scaffolds or use aerial work vehicles, and has good workability and low workability. It can be constructed at low cost and improves safety.

According to the second aspect of the present invention, in addition to the above operation, when the membrane members are stretched on both sides of the structure, the pulling bolts and nuts to be connected to the fasteners of the membrane members on the different sides are provided. What is necessary is just to arrange them alternately around the structure in a staggered manner, whereby the pulling bolts and nuts of the membrane members on different sides do not interfere with each other.

According to the third aspect of the present invention, in addition to the above operation, if the spacer is removed and the drawing bolt and the nut are tightened again, the tension can be re-introduced.

According to the fourth aspect of the present invention, in addition to the above-described operation, the lower part of the water stop cover provided in the tension introducing device is simply processed into a gutter-like portion, and a special member can be used. The dew water of the membrane member can be easily treated without the need.

[0024]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a longitudinal sectional front view showing an embodiment of a membrane roof tension introducing device of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is an end view taken along line BB of FIG. Is an end view taken along the line CC of FIG. 1, and the same components as those of the conventional example shown in FIGS. 5 and 6 are denoted by the same reference numerals.

The membrane roof tension introducing device 9 according to the present invention is also basically the same as the conventional one, and is formed in the shape of an elongated plate in the longitudinal direction of the main material 1 above the main material 1 which is a structure constituted by a steel pipe. The support member 3 is erected by welding or the like, and a plurality of tension introducing devices 9 are attached to the support member 3 at appropriate intervals.

The tension introducing device 9 penetrates the supporting member 3 in a direction perpendicular to the longitudinal direction of the supporting member 3 and inserts the pulling bolt 10. The head 10 a of the pulling bolt 10 is attached to the supporting member 3. On one side, a screw portion 10b is projected to the other side, and the lower vertical portion of the angle member 4 is fixed to the head 10a by welding or the like. Then, an appropriate number of spacers 11 are detachably interposed between the vertical portion of the angle member 4 and the support member 3 to secure a space for drawing the membrane members 2a and 2b. In the figure, reference numeral 12 denotes a fall prevention member for the spacer 11, which is horizontally projected from the lower portion of the angle member 4 toward the support member 3 by welding or the like.

An adjusting nut 13 is inserted into the threaded portion 10 b of the pulling bolt 10, and a washer 14 is interposed between the nut 13 and the supporting member 3. In this manner, with the horizontal portion of the angle member 4 protruding outward from the support member 3 and the vertical portion
Stand up on one side with an interval from the support material 3. The fasteners 5 for the membrane members 2a, 2b are fixed to the upper part of the horizontal portion of the angle member 4 with bolts 6 and nuts 7.
The fastening member 5 is formed by vertically combining two substantially thin plate-shaped bodies 5a and 5b, and has grooves 5c each having a semicircular cross section on the inner side which is the facing surface. The groove 5c becomes a cylindrical space having a circular cross section by combining upper and lower ones.

Then, the two substantially thin plate-like bodies 5a, 5b
The ends of the membrane members 2a and 2b are sandwiched between them, and the bolts 6 and the nuts 7 fix the membrane members 2a and 2b together with the metal fittings 5 to the angle member 4. In the figure 15
Shows a water-stop cover that covers the upper part of the stopper metal 5, for example, using chloroprene rubber as a material having elasticity.

The water-stop cover 15 has an upper end attached via a gasket 8 to an upper portion of a receiving member 18 having a substantially U-shaped cross section and fixed to the upper portion of the support member 3 along the length direction. Attach to the top of the gasket 8 by inclining downward on both sides and attaching it to the chevron.
Is a locking groove 8 formed in the gasket 8 by forming an arrowhead cross section.
a. In the figure, reference numeral 15b denotes a substantially U-shaped groove formed near the top.

The lower end of the water stop cover 15 is folded inward and outward so as to match the groove 5c formed in the fastening member 5, and the substantially keyhole-shaped holding portion 15c of the membrane members 2a and 2b is formed. And As a result, the film members 2a and 2b are fixed to the two substantially thin plate-like
a, 5b. The film members 2a, 2b
For example, glass fiber cloth coated with tetrafluoroethylene resin is used as the material.

The lower portion of the water stop cover 15 is extended downward, and this extended portion is bent horizontally outward and then vertically upward to form a gutter-like portion 16 for receiving dew condensation water which projects outward. To form The gutter-shaped portion 16 is formed by integrally molding the entire water-stop cover 15 at the factory. A drain hole is provided at an appropriate location on the inner wall surface of the gutter-shaped portion 16.
A drain hose 17 such as a rubber hose is connected to the drain hole 16a.

The roof membrane members 2a, 2b,... Divided into a plurality of pieces as described above are provided with fastening members 5 attached to their respective peripheral edges at appropriate intervals as shown in FIG.
, And is fixed to the main member 1 by being tightened and fixed to the support member 3 by the pulling bolt 10 and the nut 13. In this case, the tension introducing device 9 arranged over both sides of the support member 3 is
As shown in FIGS. 2 and 4, adjacent members are alternately connected to the fastening members 5 of the membrane members 2a, 2b,... On different sides, and are arranged in a staggered manner with the support member 3 as the center.

Next, a method for introducing tension will be described. Not only when the initial tension is introduced at the time of construction, but also when the tension is re-introduced due to the initial tension decrease due to the creep of the membrane members 2a, 2b. Remove the water cover 15. The removal of the water stop cover 15 can be easily performed by pulling out the mounting portion 15a from the locking groove 8a of the gasket 8.

By removing the water stop cover 15, the upper part of the tension introducing device 9 is opened. In this state, there is no member above the bolt 10, so use this space to insert a jig such as a torque wrench from above through the fastener 5 from above the membrane roof and rotate the nut 13 to loosen it. If the nut 13 is removed and the nut 13 is tightened again, the angle member 4 moves to the right in FIG. 1, whereby the fixing metal 5 fixed to the upper part of the angle member 4 also moves to the right. The film member 2a fixed to the fastener 5 is also moved rightward, and the tension is re-introduced.

Similarly, tension is re-introduced to the other membrane member 2b. The work of introducing the tension can be performed from the roof, and it is not necessary to build a temporary scaffold or the like and to use an aerial work vehicle.

The dew water generated on the surfaces of the membrane members 2a, 2b,...
Since it falls into the inside, it is drained to a drain hose 17 through a drain hole 16a to be drained outside the roof.

[0037]

As described above, the membrane roof tension introducing device of the present invention can be used not only when the initial tension is introduced into the membrane member, but also when the initial tension is reduced due to the creep and the tension is re-introduced. By simply removing the waterproof cover of the membrane roof, tension can be introduced from above the membrane roof through the metal fittings of the membrane member, eliminating the need for aerial work platforms and large-scale temporary scaffolds, thus reducing costs. Not only can improve the workability and work safety, but also easily treat the dew water of the membrane members by simple processing by simply changing the shape of the waterproof cover, which is a component of the membrane roof. You can do it.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a membrane roof tension introducing device of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1, showing an embodiment of the membrane roof tension introducing device of the present invention.

FIG. 3 is an end view taken along the line BB in FIG. 1 showing the embodiment of the tension introducing device for a membrane roof of the present invention.

FIG. 4 is an end view taken on line CC of FIG. 1 showing the embodiment of the tension introducing device for a membrane roof of the present invention.

FIG. 5 is a longitudinal sectional front view showing a conventional membrane roof tension introducing device.

FIG. 6 is a plan view of a conventional membrane roof tension introducing device with a water blocking cover removed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main material 2a, 2b ... Membrane member 3 ... Support material 4 ... Angle material 5 ... Fastening metal 5a, 5b ... Substantially thin plate-like body 5c ... Groove 6 ... Bolt 7 ... Nut 8 ... Gasket 8a ... Locking groove 9 ... tension introducing device 10 ... pulling bolt 10a ... head 10b ... screw part 11 ... spacer 12 ... drop prevention member 13 ... nut 14 ... washer 15 ... water stop cover 15a ... mounting part 15b ... groove 15c ... pinching part 16 ... Gutter 16a Drain hole 17 Drain hose 18 Receiving member 23 Tension introducing device 24 Pulling bolt 25 Nut 26 Spacer 27 Fall prevention member 28 Waterproof cover 28a Nipping part 29 Receiving member

────────────────────────────────────────────────── ─── Continuing on the front page (72) Koji Okamura, Inventor 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Jin Ito 1-2-7, Moto-Akasaka, Minato-ku, Tokyo Inside Kashima Construction Co., Ltd. (72) Inventor Naoyuki Sasaki 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) References Jiko 3-22447 (JP, Y2) (58) Field (Int.Cl. ⁶ , DB name) E04H 15/00-15/64

Claims (4)

(57) [Claims] 1. A fastening member is sandwiched from the front and back sides of a peripheral edge of a membrane member along an edge direction, and the fastening member is connected to pulling bolts and nuts arranged at appropriate intervals in a structure that is a roof frame. Then, the fastener is connected so as to be attractable in the direction of the structure, and a waterproof cover is detachably attached to the fastener, and a tension introducing device for a membrane roof covering the fastener with the waterproof cover is provided. In the above, the pulling bolt is attached by penetrating the structure, the bolt head is positioned on one side of the structure, and the lower vertical portion of the angle material is fixed to the head of the pulling bolt. A tension introducing device for a membrane roof, wherein the fastener is fixed to a horizontal portion of an angle member, and a pulling nut is attached to the other side of the pulling bolt. 2. The pulling bolt and the nut are connected to fasteners attached to membrane members provided on both sides of the structure, and adjacent ones are alternately connected to fasteners of membrane members on different sides. The tension introducing device for a membrane roof according to claim 1. 3. The tension introducing device for a membrane roof according to claim 1, wherein a spacer for securing a space for drawing the membrane member is detachably interposed between the angle member and the structure. 4. The membrane roof according to claim 1, wherein a lower portion of the water stop cover is extended below the membrane member, and a lower end of the extended portion is bent upward to form a gutter-shaped portion. Tension introduction device.