JP2000129819A - Fire resistant exterior surrounding body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it hard to transfer the heat of a fire to a waterproof sheet to prevent combustion by sticking a heat insulation material to the whole rear face of a deck and fixing a heat insulation plate on the top of the deck and covering the upper part of the heat insulation plate with the waterproof sheet. SOLUTION: This fire resistant exterior surrounding body is constituted of a deck A which is formed of deck plates and defined by a plurality of trapezoidal ridges 1 arranged at every specified distance, a noncombustible heat insulation material 3 stuck on the whole rear face of the deck A, a heat insulation plate B laid on the top of the trapezoidal ridges of the deck A and fixed thereto, and a waterproof sheet C covering the upper part of the heat insulation plate B. The deck A is constituted of a plurality of deck plates A1 and step- shaped reinforcing bent lines 1b are formed at both breadthwise ends of the top 1a of the trapezoidal ridges 1. In this way, even when the deck plates A1 are heated in a fire and the strength decreases to be easy to warp, the reinforcing bent lines 1b are prevented from being largely deflected and the structure including the deck A is prevented from being largely deformed.

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 employed 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 deck plate in which a plurality of trapezoidal ridges are formed at predetermined intervals. A deck portion made of a material, a non-combustible heat insulating material attached to the entire back surface side of the deck portion, a heat insulating plate portion placed and fixed on the top of the trapezoidal chevron portion of the deck portion, and The fireproof enclosure consisting of the waterproof sheet part to be coated makes it difficult for the heat from the indoor fire to be transmitted to the waterproof sheet through the base in the event of a fire, and the waterproof sheet and its base material are ignited. The ignition can be prevented without reaching the temperature, and the above-mentioned problem has been solved.

[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 ,.

[0008] The deck plate material A ₁ is purlin lip groove-shaped steel or the like which is arranged, structural materials 10, 10 such as a furring strip are arranged perpendicular to ..., deck plate for fasteners 11 such as rivets Fixed. The deck plate material A ₁ is,
Are formed along the width direction, and a substantially flat bottom surface portion 2 is formed between the adjacent trapezoidal mountain portions 1, 1 [FIG. 2 (A)]. , FIG. 3 (A) etc.].

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, Adjacent deck plate materials A ₁ , bottom portions 2 of A ₁
Are superposed and joined [see FIG. 2 (B)].

[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
The top 1a of the trapezoidal chevron 1 has a shape in which both end portions in the width direction are slightly depressed, and is formed along the longitudinal direction of the trapezoidal chevron 1 [FIGS. 2 (B) and 3 (A)]. )reference〕.

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. 6 shows that the trapezoidal chevron 1 has reinforcing bent strips 1b
This is a type in which b is not formed.

The deck plate material A₁On the entire back side of
Has a heat insulating material 3 attached thereto. The heat insulating material 3 is nonflammable
Material, specifically, glass fiber sheet shape
Things are used. And the above sheet-shaped insulation
Material 3 is deck plate material A ₁Trapezoidal chevron 1 and bottom
It is stuck along the back side of each part 2.

Further, adjacent deck plate members A ₁ , A
_The bottom portions 2 and 2 related to the joint portion of the deck plates 1 and 2 have a deck plate material A
There is a non-sticking area where the heat insulating material 3 is not stuck even on the back side of ₁ , making it easier to join the bottom portions 2, 2 [FIGS. 2 (A), (B) and FIG. Etc.].

Next, the heat insulating plate portion B is formed of a material that is semi-flammable. 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 [FIGS. 1, 2A and 2B]. reference〕. The lower heat insulating plate 5 is made of a material having heat insulating properties and semi-flammability, and specifically, a wool cement board is used.

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 6 suppresses the heat transfer transmitted from the deck portion A by the lower heat-insulating plate 5 and protects the upper heat-insulating plate 6 from high heat. There is also an embodiment in which the heat insulating plate portion B includes only the lower heat insulating plate member 5 (see FIG. 5). 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, it is fixed to the top 1a of the trapezoidal chevron 1 together with the fixing member 8 of the waterproof sheet portion C, which will be described later, or only the heat insulating plate portion B is fixed to another fixing member 9, 9,. reference).

Next, the waterproof sheet portion C includes a plurality of waterproof sheets 7, 7,... And a fixing member 8 for fixing the waterproof sheets 7, 7,. .
The waterproof sheet 7 is made of a flexible 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 8 are provided at the end portions. , 8, ... are arranged at predetermined intervals and fixed. Next, the end portion of another adjacent waterproof sheet 7 is arranged at the end portion of the waterproof sheet 7 already fixed on the heat insulating plate portion B, and the fixing members 8, 8,. Then, the bonding surfaces of the polymerized portions are thermally fused to each other.

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 where a fire has occurred in a building structure having a fireproof enclosure of the present invention. According to this, it is shown that the flame due to the fire hits the layer of the heat insulating material 3 stuck on the entire back side of the trapezoidal chevron 1 from the indoor side. The heat insulating material 3 allows the heat insulating plate portion B to start from the top 1a of the trapezoidal chevron 1 where the heat of the fire is blocked.
At this time, heat transfer is largely interrupted by the lower heat insulating plate member 5 of the heat insulating plate portion B.

The high temperature due to the flame is transmitted only to the joint surface between the lower heat insulating plate 5 and the top 1a, and the high heat due to the flame is transmitted to the upper heat insulating plate 6 and the waterproof sheet C. Not to be protected. 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 waterproof sheet portion C and the upper heat insulating plate member 6 of the heat insulating plate portion B. The fire extends to the part C and the heat insulating plate part B. However, the lower heat-insulating plate material 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 material 5.

When the fire heat on the indoor side reaches the upper heat insulating plate member 6, the temperature becomes extremely low.
The upper heat insulating plate member 6 and the waterproof sheet portion 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. .

[0025]

In the invention of claim 1 according to the present invention, a plurality of deck sections A trapezoidal mountain portions 1,1 is made from the deck plate member A ₁ that is formed at a predetermined interval, on the back side the whole of the deck portion A A non-combustible heat insulating material 3 to be adhered, a heat insulating plate portion B placed and fixed on the top 1a of the trapezoidal chevron 1 of the deck portion A, and a waterproof sheet portion C covering the heat insulating plate portion B
First, the structure is such that the fire heat on the indoor side is extremely difficult to be transmitted from the base of the outer enclosure to the waterproof sheet, and the waterproof sheet is prevented from being damaged by high temperature. And the like.

The above effect is described in detail. The non-combustible heat insulating material 3 is provided on the entire back surface of the top 1a of the trapezoidal chevron 1 of the deck A.
In the event of a fire on the indoor side, the heat insulating material 3 can slightly reduce the heat transfer from the top 1a of the trapezoidal chevron 1 of the deck A to the heat insulating plate B. .

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 due to 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:

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 side heat insulating plate member 5.
The lower heat-insulating plate member 5 is a semi-flammable refractory enclosure, and a waterproof sheet is provided between the heat-insulating plate portion B and the waterproof sheet portion C. A material suitable for the underlaying material of the portion C can be selected, and a structure convenient for the waterproof sheet portion C can be obtained.

That is, the heat insulating plate portion B is of a two-layer type composed of a lower heat insulating plate material 5 and an 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 5 of the heat-insulating plate B largely blocks heat transfer, and the upper heat-insulating plate 6 receives a 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, in the first aspect, the reinforcing bent strips are 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. With the refractory enclosure formed by forming 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.

[0034] 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 (A) is a perspective view as viewed from the back of the deck plate material, and FIG. 3 (B) is a longitudinal sectional front view of a main part of the deck plate material.

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

FIG. 5 is a longitudinal sectional front view of the embodiment in which the heat insulating plate portion is made of a single material.

FIG. 6 is a longitudinal sectional front view of an embodiment in which no reinforcing bend is formed at the top of a trapezoidal chevron.

[Explanation of symbols]

A: Deck part A ₁ : Deck plate material C: Waterproof sheet part B: Heat insulation plate part 1 ... Trapezoidal angle part 1a ... Top part 1b ... Reinforced bent strip 3 ... Heat insulation material 5 ... Lower side insulation plate material 6 ... Upper side insulation plate Lumber

Continuation of the front page (72) Inventor Kazuo Someya 2-9-1-2 Kyobashi, Chuo-ku, Tokyo F-term in Sankokin Metal Industry Co., Ltd. 2E001 DA01 DD01 DE03 FA03 FA16 GA12 GA13 GA42 HB02 HD11 HF01 HF11 HF12 LA01 LA14 2E108 BN01 CV08 FF01 FG03 FG04 FG11 GG01 GG10

Claims (3)

[Claims] 1. A deck section made of a deck plate material having a plurality of trapezoidal chevron sections formed at predetermined intervals, a non-combustible heat insulating material attached to the entire back side of the deck section, A fire-resistant enclosure comprising: a heat insulating plate mounted and fixed on the top of a trapezoidal chevron; and a waterproof sheet covering the heat insulating plate. 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. Fireproof 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.