JP2000129818A - Fire resistant enveloping covering body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a fire resistant sheet and a backing material for a waterproof sheet from damaging due to a high temperature by providing a waterproof sheet as an enveloping covering body for backing members for roof or wall thereby stopping the spread of fire and heat from the backing members to waterproof sheet inside a room especially at the time of a fire in order to prevent damages by high temperature for waterproof sheet and backing members for waterproof sheet. SOLUTION: A plurality of trapezoidal angle portions 1, 1 are formed at predetermined intervals. And near both the sides in width direction of the apex 1a of a trapezoidal angle portion 1, provided are a deck portion A, consisting of a deck plate member A1 having portions to be linked 1d, 1d, an incombustible insulation member 3 mounted to the place at rear surface side of the apex 1a of the trapezoidal angle portion 1, and a supporting plate member 4 for linking and fixing the portions to be linked 1d, 1d of the apex 1a of the trapezoidal angle portion 1 and also supporting and fixing the insulation member 3 to the rear surface side of the apex 1a. And also an insulation plate portion B to be placed and fixed at the apex 1a of the trapezoidal angle portion 1 of the deck portion A and a waterproof sheet portion C covering the insulation plate portion B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enclosure provided with a waterproof structure by covering a base portion such as a roof or a wall with a waterproof sheet. The present invention relates to a fire-resistant enclosure that has a structure that is not easily transmitted from a base portion to a waterproof sheet, and that can prevent damage to the waterproof sheet and an underlay material of the waterproof sheet due to high temperature.

[0002]

2. Description of the Related Art Heretofore, a plate-shaped underlaying material has been laid flat on a metal deck, and a thin sheet-like member made of synthetic resin or the like has been spread over the surface of the underlaying material. Enclosed parts such as roofs, walls, etc., are waterproofed by covering the parts in a watertight state. The waterproof sheet is formed of a synthetic resin as described above, and has a function sufficient to withstand various severe conditions such as high temperature resistance and weather resistance.

[0003] The waterproof sheet is formed in a strip shape, a large number of sheets are prepared, arranged in parallel on the surface of the underlay material, and the end portion of the waterproof sheet is placed on the surface of the underlay material by a fixing tool such as a washer and a screw. Fixed. Then, the ends of the adjacent waterproof sheets are joined in a water-tight manner by heat fusion so as to cover a fixing part made of a washer and a screw, and an outer casing having a waterproof structure as a whole is constructed. The underlaying material on which the waterproof sheet is laid is a material having heat insulating properties, and a foamed synthetic resin such as ethylene foam or the like is used.

[0004]

The waterproofing sheet and the underlaying material thereof have a very general durability, and are sufficiently resistant to exposure to the outside temperature under hot weather. However, in the event of a fire, the temperature of the fire can reach an extremely high temperature that is incomparable with the outside temperature.
The tarpaulin and the underlaying material cannot withstand very much, and when reaching the respective ignition temperature, the tarpaulin and the underlaying material ignite,
Or it will melt.

[0005] In view of the above, in order to obtain JIS certification for a fireproof roof, for example, for 30 minutes fireproof performance, high temperature due to fire heat from the indoor side is transmitted to the sheet and the underlying material through the base such as a deck plate. The structure must be difficult. As described above, if a structure is adopted in which the heat of the fire on the indoor side is blocked so as not to reach the waterproof sheet and the underlying material, the structure tends to be extremely complicated in the past. For this reason, there have been various problems such as a high construction price.

[0006]

The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have found that the present invention provides a method of forming a plurality of trapezoidal ridges at predetermined intervals. A deck portion made of a deck plate material having a locked portion in the vicinity of both sides in the width direction of the top of the chevron, a non-flammable heat insulating material to be attached to the back side of the top of the trapezoidal chevron; A support plate member that is locked and fixed to the back side at the locked portion of the top portion and supports and fixes the heat insulating material to the back side of the top portion; and a heat insulating plate that is mounted and fixed on the top portion of the trapezoidal chevron portion of the deck portion. Part, and a fire-resistant enclosure comprising a waterproof sheet portion covering the heat insulating plate portion, so that in the event of a fire, heat generated by a fire on the indoor side is difficult to be transmitted to the waterproof sheet through the base portion, For that base material, the ignition temperature Ignition can be prevented without reaching is obtained by solving the above problems.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The present invention mainly includes a deck portion A, a heat insulating material 3, and a heat insulating plate portion B [FIGS.
(See (A) and (B).) The deck portion A is composed of a plurality of deck plate materials A ₁ , A ₁ ,.
(A)].

The deck plate material A ₁ is arranged orthogonal to the structural members 10, 10,..., Such as purlins and rims, such as lip channel steel, arranged side by side, and deck plate fasteners such as rivets. Are fixed at 11, 11,... Its deck plate material A _1, a plurality of trapezoidal mountain portions 1,1 in the width direction,
Are formed, and a substantially flat bottom portion 2 is formed between the adjacent trapezoidal mountain portions 1 and 1 (see FIGS. 2A and 3).

Further, the bottom portions 2 of the both outer ends in the width direction of the deck plate material A ₁ is enables bonding of the adjacent width-direction outer end of the other of the deck plate material A _1, The bottom surfaces 2 and 2 of the adjacent deck plate members A ₁ and A ₁ are overlapped and joined (see FIG. 2B).

[0010] The trapezoidal chevron ₁ of the deck plate material A 1
Step-shaped reinforcing bends 1b, 1b are formed at both ends in the width direction of the top 1a. The reinforcing bend 1b is
Both ends in the width direction of the top portion 1a of the trapezoidal chevron 1 have a shape that is slightly recessed, and are formed along the longitudinal direction of the trapezoidal chevron 1 (see FIGS. 2B and 3). . Further, the top 1 of both rising sides 1c, 1c of the trapezoidal chevron 1
Locked portions 1d, 1d are respectively formed at the positions near a. A support plate member 4 described later is locked to the locked portions 1d, 1d so as to be fixed near the top 1a.

In the embodiment of the deck plate material A ₁ shown in the figure, two trapezoidal chevron portions 1 and 1 are formed, but only one or three or more are formed. And the number is not limited. Further, the reinforcing bent strip 1b is intended to be formed as needed, structural members 10, 10 in particular supporting the deck plate material A _1, if the ... are arranged side by side at small intervals, reinforcing The bent ridges 1b, 1b may be unnecessary. FIG. 8 shows that the trapezoidal chevron 1 has reinforcing bent strips 1b and 1b.
This is a type in which b is not formed.

The trapezoidal chevron ₁ of the deck plate material A 1
A non-combustible heat insulating material 3 is mounted on the back side of the top 1a. The heat insulating material 3 is formed of glass wool or the like, and is arranged at a position above the both rising side portions 1c, 1c from the back surface side of the top 1a of the trapezoidal chevron 1.
The heat insulating material 3 is supported and fixed to the back side of the top 1a of the trapezoidal chevron 1 by the support plate member 4 (see FIG. 2B).

The support plate member 4 is formed of a flat heat-insulating material receiving plate portion 4a and locking portions 4b, 4b formed on both sides of the heat-insulating material receiving plate portion 4a in the width direction. (See FIG. 3). Then, the locking portions 4b, 4b of the support plate member 4 have the locked portions 1d, 1d formed on the trapezoidal chevron 1.
At the top of the trapezoidal chevron 1 and its top 1a.
The top portion 1a and the heat insulating material receiving plate portion 4a
Are supported and fixed such that they are parallel to each other (see FIG. 3).

As shown in FIG. 5 (A), the specific shape of the locked portions 1d, 1d is slightly outward from the upper portions of both rising side portions 1c, 1c constituting the trapezoidal angled portion 1. A flat piece is formed so as to protrude. In this embodiment, the upper part of the trapezoidal chevron 1 has a shape slightly bulging in the width direction.

As another embodiment of the shape of the locked portions 1d, 1d, as shown in FIG. 5 (B), the shape is such that they protrude outward from the upper portions of the rising side portions 1c, 1c. The support plate member 4 has a substantially triangular bent portion.
The locking portions 4b, 4b of the support plate member 4 are locked so as to enter the locked portions 1d, 1d, which are bent portions having a substantially triangular shape. Any shape may be used as long as 4b is locked. In this manner, the heat insulating material 3 is stored so as to be sandwiched between the back surface side of the top 1 a of the trapezoidal chevron 1 and the heat insulating material receiving plate 4 a of the support plate member 4. A heat insulating action is performed at the point 1a.

Next, the heat insulating plate portion B is formed of a semi-flammable material. In the embodiment of the present invention, the two plate members are configured as two layers, and include a lower heat insulating plate material 5 and an upper heat insulating plate material 6. The lower heat-insulating plate 5 is made of a material having heat-insulating properties and quasi-noncombustibility. Specifically, a wool cement board is used [see FIGS. 1, 2A and 2B].

The lower heat-insulating plate member 5 serves to block heat transmitted from the room through the deck A in the event of a fire. Upper side insulation plate 6
Is a heat-insulating member for laying the waterproof sheet portion C, and is preferably made of a foamed synthetic resin or the like. Specifically, a plate material formed of a material of isocyanurate foam is used. The upper heat insulating plate 6 preferably has some elasticity.

The upper heat-insulating plate member 6 serves to suppress the heat transfer from the deck section A to a low level by the lower heat-insulating plate member 5 and protect the upper heat-insulating plate member 6 from high heat. There is also an embodiment in which the heat insulating plate portion B is constituted only by the lower heat insulating plate member 5 (see FIG. 7). In this embodiment, the heat-insulating plate portion B is made of a single material, and the entire heat-insulating plate portion B becomes semi-flammable.

The heat-insulating plate portion B includes the deck portion A
, Each apex 1a, 1a,
... It is arranged over. Then, the top 1 of the trapezoidal chevron 1 together with the fixing members 8, 8,...
a, or only the heat insulating plate portion B is fixed with another plate fixing tool 9, 9,.

Next, the waterproof sheet portion C comprises a plurality of waterproof sheets 7, 7,... And a fixing member 8 for fixing the waterproof sheets 7, 7,. [See FIGS. 1 and 2 (A) and 2 (B)]. The waterproof sheet 7
Is made of a soft and durable synthetic resin, specifically, is mainly made of ethylene propylene, and has a thickness of about 1 mm. The fixing tool 8 includes a screw shaft member and a washer plate.

In order to form the waterproof sheet portion C with the waterproof sheets 7, 7,..., First, the first waterproof sheet 7 is laid at an appropriate position on the heat insulating plate portion B, and a plurality of fixing tools are provided at the end portions. Are arranged at predetermined intervals and fixed. Next, the end portions of the other adjacent waterproof sheet 7 are arranged at the end portions of the waterproof sheet 7 already fixed on the heat insulating plate portion B, so that the fixing members 8, 8,... Polymerization is performed and the bonding surfaces of the polymerized portions are thermally fused.

Thus, the fixing members 8 of the waterproof sheet 7,
The end portions fixed at 8,... And the end portions of the other waterproof sheet 7 adjacent thereto are water-tightly joined by heat fusion. Then, by repeating this process, the heat insulating plate portion B is covered with the waterproof sheet portion C in a watertight manner (see FIGS. 1, 2A, and 2B).

FIG. 4A shows a state in which a fire has occurred in a building having the fireproof enclosure of the present invention. According to this, it is shown that a flame due to a fire hits the heat insulating material 3 attached to the back surface of the top 1 a of the trapezoidal chevron 1 via the support plate member 4 from the indoor side.

The heat insulating material 3 transfers heat from the top 1a of the trapezoidal chevron 1 where the fire heat is cut off to the heat insulating plate portion B. At this time, heat is transmitted by the lower heat insulating plate material 5 of the heat insulating plate portion B. Transmission will be severely interrupted. The high temperature caused by the flame is lower than the lower insulating plate material 5.
The upper heat-insulating plate member 6 and the waterproof sheet portion C are protected only from the heat transmitted only to the joint surface portion between the upper and lower portions 1a.

FIG. 4B is a graph showing a heat transfer state between the deck portion A, the heat insulating plate portion B, and the waterproof sheet portion C due to a fire. That is, the deck portion A becomes extremely hot due to the fire, and the temperature at this time is a temperature exceeding the ignition point of the upper heat insulating plate member 6 of the waterproof sheet portion C and the heat insulating plate portion B. The fire extends to the heat insulating plate portion B.

However, the lower heat-insulating plate member 5 of the heat-insulating plate portion B greatly blocks heat transfer due to fire, and its temperature drops significantly while passing through the lower heat-insulating plate member 5. When the indoor heat reaches the upper heat-insulating plate 6, the temperature becomes extremely low, and the upper heat-insulating plate 6 and the waterproof sheet C can be sufficiently protected. Further, even in the case of a single material in which the heat insulating plate portion B is formed only of the material of the lower heat insulating plate material 5, it is possible to prevent heat transfer and protect the waterproof sheet portion C from high temperatures as described above. .

[0027]

According to the first aspect of the present invention, a plurality of trapezoidal ridges 1 and 1 are formed at predetermined intervals, and a locked portion 1d is located near both sides in the width direction of the top 1a of the trapezoidal ridges 1a. , 1
Deck section A comprising a deck plate material A ₁ having a d
A non-combustible heat insulating material 3 to be attached to the back side of the top 1a of the trapezoidal chevron 1; and a locked and fixed back side 1d of the top 1a of the trapezoidal chevron 1 on the back side. A supporting plate member 4 for supporting and fixing the heat insulating material 3 on the back side of the top 1a.
And a heat-insulating plate portion B placed and fixed on the top 1a of the trapezoidal chevron portion 1 of the deck portion A, and a waterproof sheet portion C covering the heat-insulating plate portion B. First, it is possible to obtain a structure in which the heat of the fire on the indoor side is extremely unlikely to be transmitted from the base portion of the outer enclosure to the waterproof sheet, and the waterproof sheet can be prevented from being damaged by high temperature.

The effect is described in detail. A non-combustible heat insulating material 3 is mounted on the back side of the top 1a of the trapezoidal chevron 1 of the deck portion A via a support plate member 4, and a fire on the indoor side occurs. In this case, first, the heat transfer from the top 1a of the trapezoidal chevron 1 of the deck A to the heat insulating plate B can be slightly reduced by the heat insulating material 3.

Then, heat transfer to the waterproof sheet portion C is largely blocked by the heat insulating plate portion B, and the waterproof sheet portion C can be protected from damage by fire. In addition, while the waterproof sheet portion C is protected from high temperatures due to fire and can be sufficiently used as a fire-resistant enclosure, its structure is extremely simple and excellent in workability, and as a result, low cost. This has the advantage that it can be provided by:

Further, the tip of a bolt or the like used as a fixing tool for fixing the deck portion A to the heat insulating plate portion B and the waterproof sheet portion C pierces the top 1a of the trapezoidal chevron 1, and the back side of the top 1a. Although the tip of the fixing tool 8 projects and is exposed, the support plate member 4 is
By mounting on the back side and covering the back side,
The exposed portions of the fasteners 8, 8,... Are hidden, and only the support plate member 4 can be seen from the back side of the trapezoidal chevron 1.

Therefore, even if the bolts and the like made of the fixing members 8, 8,... Are not arranged uniformly, even if the appearance is poor when viewed from the back surface side of the top portion 1a, they are not only hidden by the support plate member 4, but also hidden. Since the support plate member 4 covers the back surface side of the trapezoidal chevron 1, the back surface side of the deck portion A has a unified appearance as a whole and can be in an orderly state.

Next, according to a second aspect of the present invention, in the first aspect, the heat insulating plate portion B is provided with a lower heat insulating plate member 5.
And a lower heat-insulating plate material 5 having a semi-flammable refractory enclosure, so that a heat-insulating plate portion B and a waterproof sheet portion C are formed.
A suitable material can be selected for the underlaying material of the waterproof sheet portion C between the waterproof sheet portion C and the waterproof sheet portion C.

That is, the heat insulating plate portion B is of a two-layer type composed of the lower heat insulating plate material 5 and the upper heat insulating plate material 6 and the lower heat insulating plate material 5 is made semi-flammable. The side heat-insulating plate member 5 has fire resistance in the range of semi-flammability as well as heat insulation.

In this way, when a fire occurs in the room, the lower heat-insulating plate member 5 of the heat-insulating plate portion B largely blocks the heat transfer, and the upper heat-insulating plate member 6 receives the temperature that does not reach its ignition point. It is only done. Therefore, the upper side heat insulating plate member 6 is sufficiently protected from the high temperature caused by the indoor fire.

Since the heat insulating plate portion B is of a two-layer type, the lower heat insulating plate material 5 and the upper heat insulating plate material 6 can be different from each other. Even if various performances such as heat insulating properties are inferior to those of the lower side heat insulating plate member 5, there is an advantage that a material that is more appropriate as an underlay material to which the waterproof sheet portion C is adhered can be selected.

Next, according to a third aspect of the present invention, the reinforcing bent strip according to the first aspect is provided at both ends in the width direction of the top portion 1a of the trapezoidal angled portion 1 of the deck portion A and along the longitudinal direction of the trapezoidal angled portion 1. By using the refractory enclosure formed with 1b, 1b, it is possible to suppress the strength deterioration of the metal due to a fire and to minimize the damage due to the fire.

That is, the reinforcing bends 1b, 1b formed at both ends in the width direction of the top 1a of the trapezoidal chevron 1 are formed along the longitudinal direction of the trapezoidal chevron 1, and the reinforcing bends 1b, 1b, By 1b, the section modulus of the trapezoidal chevron 1 can be set to a larger value than when the reinforcing bent strips 1b, 1b are not formed.

[0038] Thus, when a fire occurs, the deck plate material A ₁ is heated by the flame, strength is lowered, even if easily bent, the reinforcing bent strip 1b, 1
With b, it is possible to prevent the deflection from becoming large, to prevent the structure including the deck portion A from being significantly deformed by the fire, and it is possible to stop the damage due to the fire almost to a minimum.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of the present invention.

FIG. 2A is a schematic vertical sectional front view of the present invention, and FIG.

FIG. 3 is a perspective view showing a state in which a back surface of the deck plate is filled with a heat insulating material via a support plate member.

FIG. 4 (A) is a view showing a state in which a fire is occurring inside the deck room, and FIG. 4 (B) is a view showing a state in which the fire heat drops significantly while the heat is transferred from the deck to the waterproof sheet through the heat insulating plate. Graph showing

5A is a vertical sectional front view showing a trapezoidal chevron, a heat insulating material, and a support plate member. FIG. 5B is a vertical sectional front view of an essential part showing another embodiment of a locked portion of the trapezoidal chevron.

FIG. 6 is a longitudinal sectional side view showing a state in which a tip end portion of a screw shaft member of a fixing tool is covered by a support plate member.

FIG. 7 is a longitudinal sectional front view of the embodiment in which the heat insulating plate portion is made of a single material.

FIG. 8 is a longitudinal sectional front view of an embodiment in which a reinforcing bend is not formed at the top of a trapezoidal chevron.

[Explanation of symbols]

A: Deck portion A ₁ : Deck plate material C: Waterproof sheet portion B: Heat insulating plate portion 1 ... Trapezoidal angle portion 1a ... Top portion 1b ... Reinforced bent strip 1d ... Locked portion 3 ... Heat insulating material 5 ... Lower side heat insulating plate material 6 Upper heat insulating plate material 4 Support plate member

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) E04D 3/35 E04D 3/35 F (72) Inventor Kazuo Someya 2-9-2 Kyobashi, Chuo-ku, Tokyo Sankokin F-term (reference) in Zu-Kogyo Co., Ltd. GG10 GG15

Claims (3)

[Claims] A plurality of trapezoidal chevron portions formed at predetermined intervals, and a deck portion made of a deck plate material having locked portions near both sides in a width direction of a top portion of the trapezoidal chevron portions; A non-combustible heat insulating material to be attached to the back side of the top of the portion, and a fixed portion fixed to the back side at the locked portion of the top of the trapezoidal chevron, and the heat insulating material is supported and fixed to the back side of the top. A fireproof enclosure comprising a support plate member, a heat insulating plate portion mounted and fixed on the top of the trapezoidal chevron portion of the deck portion, and a waterproof sheet portion covering the heat insulating plate portion. 2. The heat insulating plate according to claim 1, wherein the heat insulating plate has a two-layer structure including a lower heat insulating plate and an upper heat insulating plate, and the lower heat insulating plate is quasi-flammable. Refractory enclosure. 3. The refractory outside according to claim 1, wherein reinforcing bent strips are formed at both ends in the width direction of the top of the trapezoidal chevron of the deck and along the longitudinal direction of the trapezoidal chevron. Enclosure.