JPH07116773B2 - Fireproof compartment structure of double floor formation room - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] When the double floor forming chamber of a building is divided into a plurality of rooms by a fireproof partition wall, the present invention is elastic in the underfloor space immediately below the floor fireproof partition wall. A double-floor formation chamber that can prevent fire spread between compartments as well as fire spread of electric wires arranged under the floor by loading a fireproof partition member mainly composed of deformable inorganic fiber integrated rods The purpose is to obtain a fireproof compartment structure.

[Conventional technology]

It is common practice to form a double floor on the floor of the building floor and to provide wiring and piping in the space under the double floor. The partitioning of the interior space by the room or the movable shutter is carried out as necessary for fire prevention and sound insulation.

It is necessary to similarly provide a blocking section in the underfloor space of the double floor when the room section as described above is provided. For example, in Japanese Patent Laid-Open No. 63-93956, there is a lower part standing on the floor surface. A fireproof compartment formed by forming a hollow chamber in parallel with partition walls formed by face-to-face polymerization of a shielding plate and an upper shielding plate hanging down on the lower surface of the floor panel, and connecting a filler such as rock wool to the hollow chamber. A fireproof compartment structure for a double floor formation chamber, wherein members are packed in a vertically compressed state. Is the gist.

6-2. On the other hand, the first cited example disclosed in the reason for refusal, Japanese Patent Laid-Open No. Sho 60
-The invention of the floor structure of the building described in Japanese Patent Publication No. 192051
A technique for disposing a flexible heat-resistant and non-combustible material in the underfloor space of a double floor to define a plurality of closed spaces is disclosed, and asbestos sheets and rock wool mats are used as the flexible heat-resistant and non-combustible material. ing.

However, since inorganic fiber aggregates such as asbestos sheets and rock wool mats originally have low strength, the rod-shaped body obtained by cutting this is likely to be deformed during its handling, and its constituent fibers are fragile. Despite the fact that the surface fibers are liable to be cut and damaged and it is very difficult to handle, there is no mention of the countermeasure.

6-3. Furthermore, the second cited example, which is indicated in the reason for refusal, is the application 61-19.
The microfilm of No. 826 (Jpn. Pat. Appln. No. 62-131818) shows a heat insulating material composed of a wool mat of inorganic fibers in which the heat resistance and flame retardancy of the fibers of the surface layer are higher than those of the inner layer. , The surface layer is recognized as being integrally formed with the inner layer as a random fiber laminate similar to the inner layer, and therefore the surface layer is a heat-resistant fiber cloth covering the inorganic fiber aggregate. Is something that cannot be fully understood.

6-4. However, in the above-mentioned two cited examples, regarding the prevention of the spread of fire between adjacent rooms by both fire prevention compartments filled with fire prevention compartment members in the underfloor space immediately below the floor fire prevention compartment wall of the double floor formation chamber, There is no explanation at all, and in particular, as a fireproof partitioning member to be filled in the underfloor space, it is wound to such an extent that it does not adhere to the peripheral side surface except for a slight range of both ends of the inorganic fiber integrated rod-shaped body and does not compress the rod-shaped body. There is no suggestion of the covering structure of the heat-resistant fiber cloth.

6-5. The mat-shaped material is a scale-shaped material, and the constituent fibers are bonded to each other by a small amount of thermosetting synthetic resin depending on the manufacturing conditions to give a certain shape-retaining property. It has a directionally elastic deformability depending on the fiber-accumulation lamination conditions, and such an inorganic fiber-accumulated mat is generally used as a heat-resistant heat insulating material and sound absorbing material.

As the heat resistant fiber cloth for covering the peripheral side surface of the inorganic fiber integrated rod-shaped body, glass fiber woven cloth is suitable, but may be heat resistant fiber cloth such as ceramic fiber cloth and aramid fiber cloth, This heat-resistant fiber cloth is wrapped around the peripheral side surface of the inorganic fiber integrated rod-shaped body to such an extent that the rod-shaped body is not compressed, and both cloth ends are joined and connected by an inorganic adhesive, whereby the elastic deformability of the inorganic fiber integrated rod-shaped body is increased. The outer surface is reinforced and protected as a smooth cloth surface while maintaining the above, and in this case, the peripheral side surfaces of the both ends of the rod-shaped body in a slight range are exposed surfaces not covered with the glass fiber woven cloth. Thus, when the end faces of the rod-shaped bodies are brought into contact with each other to connect the fire-proof partitioning members, it is possible to obtain the close sealing property in the case of contact with the wall surface.

Further, when the above-mentioned fireproof partition member is installed on the floor base, if an inorganic adhesive is applied and fixed to the lower surface or the floor base, it can be moved during the work such as laying or opening the floor panel. In addition to being able to prevent it, it is possible to obtain the hermetic sealing of the wiring and piping portion extending on the floor base.

[Action]

As described above, the fireproof partition structure of the double floor forming chamber of the present invention prevents the spread of fire between the rooms and between the underfloor spaces by the above-ground fireproof partition wall and the fireproof partition member of the underfloor space portion immediately below the fireproof partition wall. The fire-proof partitioning member in which the peripheral side surface of the elastically deformable inorganic fiber accumulated rod-shaped body that is packed in the underfloor space portion is covered with a heat-resistant fiber cloth is compressed in the vertical direction. Since it divides the space between the bottom surface of the floor panel and the floor base, it can be easily installed without any special work on the floor base or floor panel surface during the double floor formation construction. Due to the elastic close contact of the members, a good underfloor fireproof section can be stably obtained, and at that time, it is possible to easily obtain the unevenness of the floor base ground and the close contact state with the wiring and piping section.

Also, following the adjustment of the floor panel support height after the double floor is formed, the fireproof partition member elastically expands and contracts to maintain the sealed state, and the wiring and piping arrangements are changed to improve the floor top surface. The removal and refilling of the fireproof partition member can be carried out very easily by manual work in response to the fluctuation.

In addition, although the inorganic fiber-accumulated rod-shaped body, which is the main component of the fireproof partitioning member, has low strength and its constituent fibers are extremely fragile, a surface made smooth by a heat-resistant fiber cloth covering most of the peripheral side surface of the rod-shaped body. Since it is reinforced and protected, damage and deformation during use and handling as described above can be prevented, and both ends of the heat-resistant fiber cloth which are not covered are contact-pressed with the end faces of the rod-shaped body to connect the fire-proof partition member. In addition, it is possible to easily obtain a close sealed state during contact pressure bonding to the room peripheral wall.

〔Example〕

 Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view with a partial cross section showing the fireproof partition structure of a double floor formation chamber of the present invention, FIG. 2 is a side view of the essential parts thereof, and FIG. 3 is a perspective view of the fireproof partition member used therefor. It is a figure.

In the figure, a floor panel 10 has a square upper surface, and through holes 11 are provided at four corners thereof, and screw pedestals 12 are erected in the through holes 11 so that a floor height S is higher than a floor ground S and a floor height is below the floor S. A plurality of floor panels 10 are laid adjacent to each other to form a double floor of height h.

Reference numeral 20 is a fireproof partition wall for partitioning a room in which a double floor is formed as described above, and is normally located on the ground joint between the floor panels 10 and 10 of the double floor and is erected on the floor base C. Fireproof partition wall on the seat fixed to the upper surface of the floor panel 10 via embedded bolts
The lower end edge of 20 is fitted, the upper end edge of the fire protection partition wall 20 is fixedly attached so as to be in close contact with the ceiling of the room, and both end edges are in close contact with both side walls of the room.

Reference numeral 1 denotes a fireproof partition member, which covers the peripheral side surface of the inorganic fiber integrated rod-shaped body 2 as shown in FIG.
Is lightly wound so that the rod-shaped body 2 is not compressed, and both edges of the wound cloth of the fiber cloth 3 are connected and fixed by a heat-resistant inorganic adhesive. The peripheral side surfaces on both ends are exposed surfaces on which the heat resistant fiber cloth 3 is not wound.

As shown in FIG. 1 and FIG. 2, the fireproof partition member 1 is vertically compressed in the underfloor space immediately below the fireproof partition wall 20 provided on the double floor forming floor surface. And floor panels 10
It is elastically and closely held by the face and the floor base S to obtain a fireproof compartment structure.

Next, specific examples of the above-described fireproof partition member 1 and a double floor fireproof partition structure using the same will be further described.

The inorganic fiber integrated rod-shaped body 2 used for the fire protection partition member 1 is a rod-shaped body having a rectangular cross section of 520 mm in length, which is obtained by cutting a rock wool laminated integrated mat having a density of 60 kg / m ³ and a thickness of 85 mm with a width of 50 mm. Then, leave the exposed surface of 10 mm on both ends of the rod-shaped body, and apply heat-resistant fiber cloth 3 to the outer peripheral surface of the rod-shaped body.
A 0.1 mm thick glass fiber plain woven cloth having a unit weight of 0 g / m ² was wound around and both ends thereof were polymer-bonded with water glass.

The double-floor floor panel 10 has a thickness of 22 mm and a side length of 533 mm and is made of glass fiber reinforced concrete. The floor panel (DDF-3E panel manufactured by Nitto Boseki Co., Ltd.) has four corners with adjustable support height. A plurality of floor panels 10 were installed adjacent to each other so that a height h of the underfloor space was 75 mm and a double floor was formed.

At that time, the wiring C of the OA communication wire having an outer diameter of 12 mm is pre-extended on the floor ground S at the installation position of the floor fire protection partition wall 20 at a position orthogonal to the partition wall 20 and directly below the floor fire protection partition wall 20. The above-mentioned fireproof partitioning member 1 is filled in the underfloor space portion by its elastic compressive deformability so that the rock wool laminated surface is in the horizontal direction, and the floor surface S including the lower surface of the floor panel 10 and the wiring C surface. The underfloor fire protection compartment structure was formed by closely contacting with.

In accordance with the "fire resistance test method for building structure" specified in JIS A1304 by installing such a structure on the floor and under the floor in the heating test furnace, a high temperature combustion gas is introduced into one chamber of the partitioned structure. Then, in the center of the room, a heating test was performed for 130 minutes such that the elapsed time and temperature were 30 minutes, 840 ° C, 60 minutes, 925 ° C, 120 minutes, 1010 ° C.
About 890 ℃ with a metal lid surface that sealed the outlet mounting port 13 of 0,
The underfloor wiring C reached the maximum temperature of 470 ° C, and the wiring C burned remarkably, but the wiring C located in the center of the underfloor fire protection partition member 1 was about 150 ° C and had no abnormality. It was just warm.

On the other hand, when the fireproof partition member 1 is not provided, the maximum temperature of the wiring C is reduced to about 400 ° C, but even under the floor of the non-heating chamber, the burnout condition is seen up to about 1.5 m from the floor partition wall. Was given. Therefore, it is considered that under the condition that the air is fluidly supplied, the fire may be spread through the wiring.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY Since the present invention has the above-mentioned structure and action, a very effective fireproof partition structure can be formed very easily in the underfloor space portion directly below the floor fireproof partition wall of the double floor forming chamber, and unevenness of the floor foundation, wiring, etc. Or, since it is possible to maintain the fireproof performance even when the support height of the floor panel is changed and adjusted, the fireproof compartment performance of the double floor formation chamber is improved, and the construction efficiency is improved,
The effects of improving economic efficiency are remarkable.

[Brief description of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view with a partial cross section, FIG. 2 is a side view of an essential portion thereof, and FIG. 3 is a perspective view of a fire protection partition member. 1 ... Fireproof partition member, 2 ... Inorganic fiber accumulated rod-shaped body, 3
...... Heat resistant fiber cloth 10 …… Floor panel, 12 …… Screw pedestal, 20 …… Fireproof partition wall S …… Floor ground, C …… Wiring

Claims (2)

[Claims] 1. A small range of both ends of an inorganic fiber accumulated rod-shaped body having a horizontal fiber laminated surface which is elastically deformable in the vertical direction is removed in the underfloor space directly below the floor fire protection partition wall of the double floor formation chamber. The peripheral side surface is wrapped with a heat-resistant fiber cloth so as not to compress the inorganic fiber integrated rod-shaped body, and both ends of the cloth are joined and connected by an inorganic adhesive. The fireproof compartment structure of the double floor formation chamber, which is filled in a flat state. 2. The fireproof partition structure for a double floor forming chamber according to claim 1, wherein the lower surface of the fireproof partition member fitted in the underfloor space portion is fixed to the floor ground with an inorganic adhesive.