JP4918332B2 - Through-hole blocking structure - Google Patents

Description

  The present invention relates to a through-hole closing structure for closing a gap between an inner surface of a through-hole formed in a fireproof structure and a combustible elongated body inserted through the through-hole.

In this type of through-hole blocking structure, in the event of a fire, the thermally expandable refractory material expands thermally, making up for the portion where the flammable elongate body has been burned down, thereby making the adjacent fire in the fireproof structure. Delay the spread of fire from the side room to the non-fire side room.
As a conventional through-hole closing structure, a receiving metal fitting is arranged in a gap between a through-hole formed in a fireproof structure such as a floor or a wall and a flammable long body inserted through the through-hole, so that thermal expansion is achieved. In some cases, a thermal expansion refractory material with a clay-like refractory material closed in a bag is wrapped around a flammable long body and received and supported by a receiving bracket, and the space is filled with a thermal expansion refractory material. (For example, see Patent Document 1).

Japanese Patent Laying-Open No. 2005-73357 (pages 2 and 3, FIG. 4)

However, in such a through-hole closing structure, the heat-expandable refractory material corresponding to the volume of the gap is configured to receive the heat-expandable refractory material using a receiving fitting corresponding to the size of the through-hole. Need to prepare.
Therefore, since it is necessary to prepare a thermally expandable refractory material and a receiving metal fitting of a size corresponding to the construction site, there is a problem that the site compatibility is poor.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a through-hole closing structure having a simple closing configuration and good workability.

The characteristic structure of the 1st through-hole obstruction | occlusion structure of this invention is the clearance gap between the inner surface of the through-hole formed in the fireproof structure in a fire prevention division area | region, and the outer surface of the combustible elongate body penetrated by this In addition, a heat-expandable refractory material obtained by mixing a powder-form or granular heat-expandable material with a refractory sealant that cures from a paste state is in close contact with the inner surface of the through hole and the outer surface of the combustible elongated body. It is in the point filled with the gap closed .

According to such a configuration, it corresponds to the size regardless of the size of the gap between the through hole formed in the fireproof structure in the fire protection area and the combustible long body inserted through the through hole. The amount of thermally expandable refractory material can be filled to close the gap.
And even if a fire should occur by any chance, by thermally expanding the thermally expandable material mixed with the thermally expandable refractory material, by compensating for the burned out and deformed part of the combustible long body, It is possible to delay the spread of the fire from the adjacent fire side room to the non-fire side room with the fire prevention structure.

Therefore, the through-hole blocking structure having fire resistance can be formed with a simple blocking configuration.
In addition, the workability is better because it has better workability than conventional through-hole blockage structures that require the use of mounting brackets with a size corresponding to the gap or a thermally expandable refractory material with a volume corresponding to the gap. Can be improved.

The second through-hole blocking structure according to the present invention is characterized in that the fire prevention structure is composed of a hollow wall in which a wall member is used on the front and back and a space is formed between the wall members. A through-hole is formed in the wall member with the same axial center, and powder is applied to a fire-resistant sealing material that cures from a paste state in the gap between the inner surface of the through-hole and the outer surface of the flammable elongated body inserted through the hole. The heat-expandable refractory material mixed with the heat-expandable material in the form of granules or granules is in a state of being in close contact with the inner surface of the through-hole and the outer surface of the combustible elongated body so as to close the gap. .

According to such a structure, the clearance gap between the through-hole formed in the wall member on the front side and the combustible elongate body penetrated by this, the through-hole formed in the wall member on the back side, and this insertion By filling the gap between the flammable elongated body and the heat-expandable refractory material in an amount corresponding to the gap, the two gaps are closed to divide the fireproof structure that is a hollow wall into a fireproof compartment be able to.
Even in the event of a fire, the thermally expansible material mixed with the heat-expandable refractory material filled in the gap between the fire-side wall members is thermally expanded, so that the combustible elongated body still more to compensate for the burned portion, the wall member of the non-fire side can be delayed the the fire to spread, even if the fire reaches the wall member of the non-fire side, non-fire by thermally expandable material to be mixed with the thermally expandable fireproof material filled in the gap between the side wall member is thermally expanded, more to compensate for the portion combustible long body is destroyed, the non-fire side room Thus, it is possible to construct a fire prevention section corresponding to the hollow wall that can delay the spread of fire.

Therefore, the through-hole blocking structure having fire resistance can be formed with a simple blocking configuration.
In addition, as compared with conventional mounting brackets with a size corresponding to the gap and a heat-expandable refractory material with a volume corresponding to the gap, the construction expansion is better, so thermal expansion is possible. Even if there are a plurality of locations where the refractory refractory is filled, the workability can be improved.

  The third through-hole blocking structure according to the present invention is characterized in that the sealing material is composed of a silicon sealing material that hardens from a paste state mainly composed of fire-resistant silicon to a rubber state. .

According to such a configuration, the gap can be filled with the thermally expandable refractory material in a paste state, so that the adhesiveness of the thermally expandable refractory material to the inner surface of the through hole and the outer surface of the flammable elongated body In addition, since the filled portion and the unfilled portion can be visually discriminated, the filling operation can be executed smoothly.
And in the state hardened | cured in the rubber | gum state, since the adhesion | attachment of the state closely_contact | adhered to the inner surface of a through-hole and the outer surface of a elongate body is made, a clearance gap can be obstruct | occluded over a long period of time.

Therefore, it is possible to form a through-hole blocking structure with good workability, fire resistance, and blocking performance.
In addition, in a state where the heat-expandable refractory material is cured in a rubber state, it becomes an elastic body, so even if vibration occurs in the long body due to the combustible long body, the vibration is attenuated, It is possible to prevent the vibration from the combustible long body from propagating to the fireproof structure.

  According to the fourth through-hole blocking structure of the present invention, the combustible elongated body includes a coating layer in which a fireproof / soundproof layer is formed on the inner side and a soundproof layer is laminated on the outer side of the layer. In the point.

  According to such a configuration, the long body itself is fireproofed by the fireproof / soundproof layer, and the fireproof section of the fireproof structure is formed by the thermally expandable fireproof material filled in the gap between the long body and the through hole. Therefore, in the unlikely event of a fire, even if the sound insulation layer of the elongate body is burned out, the thermal expansion material of the fireproof layer will thermally expand to compensate for the burnout. Since the closed state of the gap of the long body can be maintained, the long body portion corresponding to the through hole is burned out as in the past, and the gap between the through hole and the long body is filled. Compared to a configuration that delays fire by making thermal expansion to compensate for the burned-out thermal expansive material, it can delay the fire from spreading to the non-fire side room longer in time. it can.

  Therefore, it is possible to form a highly reliable fire prevention section.

Hereinafter, embodiments of the through-hole blocking structure of the present invention will be described with reference to the drawings.
[Embodiment]
The through-hole blocking structure A of this embodiment is thermally expanded in the gap S between the through-hole B formed in the hollow wall 1 that is a fire prevention structure of a building and the combustible long body 2 inserted through the through-hole B. An example in which the refractory material 4 is filled is described.

  As shown in FIGS. 1 and 3, the hollow wall 1 is configured by using wall members 1 </ b> A and 1 </ b> B on the front and back sides and forming a space 1 </ b> C between the wall members 1 </ b> A and 1 </ b> B. In the corresponding part of the hollow wall 1 through which the combustible long body 2 penetrates, the front and back wall members 1A and 1B are formed with through-holes B and B having the same shaft center, and the combustible long body 2 is inserted. Yes.

  In the gaps S and S between the through holes B and B formed in the front and back wall members 1A and 1B and the combustible long body 2 inserted through the through holes B and B, the sealing material 4A has a powdery or granular thermal expansion. The heat-expandable refractory material 4 in which the property material 4B is mixed is filled.

  The sealing material 4A of this embodiment is composed of a silicon sealing material that hardens from a paste state, which is mainly made of silicon having fire resistance, to a rubber state. As the silicon sealing material 4A, a material that maintains a paste state in a sealed space and is cured in an air-released state is used.

  Since the silicon sealing material 4A maintains the paste state in the sealed space and cures in an air-released state, the heat-expandable refractory material 4 is formed by mixing the silicon sealant 4A in the paste state with the heat-expandable material 4B. The The silicon sealant 4A has good adhesion even when the material of the wall members 1A and 1B constituting the hollow wall 1 is a gypsum board, a calcium silicate plate, etc., and the combustible long body 2 is covered with asphalt or the like. Even if there is, it has good adhesion.

  As the heat-expandable material 4B, powdery or granular unfired vermiculite, which is an example of a heat-expandable material, is used so as to expand in the event of a fire.

Such a heat-expandable refractory material 4 is used, for example, by filling a paste-like material in an extruder (not shown) and extruding from the extruder.

  The combustible elongate body 2 is composed of a vinyl chloride pipe 8 covered with a covering tube C in which a fireproof / soundproof layer 5 is formed on the inside and a soundproof layer 6 is laminated on the outside. Although the vinyl chloride pipe 8 itself is flame retardant, it will soften or burn out in the event of a fire, so the fire / soundproof layer 5 will not soften the fire heat or flame directly on the pipe itself. And delaying burnout.

  The fireproof / soundproof layer 5 of the coated tube C is mainly composed of cotton lump rock wool or glass wool, and the sound insulation layer 6 is composed mainly of asphalt, rubber material, polymer resin, etc., and the sound insulation layer 6 A decorative layer 7 made of a sheet layer of polyethylene, polypropylene, vinyl chloride, ABS resin, ASS resin or the like or a non-woven fabric made of synthetic resin is provided on the outer peripheral surface of the sheet.

  With such a configuration, thermal expansion is caused in each of the gaps S and S between the through holes B and B formed separately on the front and back wall members 1A and 1B and the combustible long body 2 inserted through these through holes B and B. By filling the refractory material 4, it is possible to close the respective gaps S and S and to divide the fireproof structure as the hollow wall 1 into a fireproof section.

Specifically, a clearance S between the through hole B formed in the front wall member 1A and the combustible elongated body 2 inserted through the through hole B, and the through hole B formed in the back wall member 1B The gap S between the flammable elongated body 2 inserted through the gap is filled with an amount corresponding to the gap S by an extruding device of the thermally expanded refractory material 4 in a paste state, and the two gaps S and S are formed. After blocking, the through-hole blocking structure A is formed after the filled thermally expandable refractory material 4 is cured in a rubber state.

  Even in the event of a fire, the thermally expandable material 4B mixed with the thermally expandable refractory material 4 filled in the gap between the fire-side wall members 1A (1B) is thermally expanded. By making up the burned or deformed portion of the combustible long body 2, it is possible to delay the fire from spreading to the non-fire side wall member 1B (1A), even if the fire is a non-fire side wall. Even when the member 1B (1A) is reached, the thermally expandable material 4B mixed with the thermally expandable refractory material 4 filled in the gap S of the wall member 1B (1A) on the non-fire side thermally expands. By constructing a fire-proof section corresponding to the hollow wall 1, it is possible to delay the spread of the fire to the non-fire side room by supplementing the burnt or deformed portion of the combustible long body 2. can do.

Moreover, the vinyl chloride pipe 8 itself is fire-proofed by the fire-proof / sound-proof layer 5, and the flammable refractory material 4 filled in the gap S between the flammable elongated body 2 and the through-hole B is used for the fire-proof structure. The fire-expanding section is used, so that in the event of a fire, even if the sound insulation layer 6 and the decorative layer 7 of the flammable elongate body 2 are burned out, the heat-expandable material of the heat-expandable fire-resistant material 4 When 4B thermally expands and compensates for burning, the closed state of the gap S between the through hole B and the combustible elongated body 2 can be maintained.

[Another embodiment]
1) In the through-hole blocking structure A of the above embodiment, the through-holes B and B formed in the front and back wall members 1A and 1B in the hollow wall 1 that is a fireproof structure, and the combustible long body inserted through the through-holes B and B 2, the example in which the thermal expansion refractory material 4 in which the powdery or granular thermal expansion material 4B is mixed with the sealing material 4A is filled in the two gaps S and S between the two is described. However, the present invention is not limited thereto, and a thermally expandable refractory material in which a sealing material is cured in a rubber state may be used for filling.

  In this case, the clearance S between the through hole B formed in the front wall member 1A and the combustible elongated body 2 inserted through the through hole B, the through hole B formed in the back wall member 1B, and Two gaps S and S are formed by pushing and filling a thermally expansive refractory material against the elastic restoring force along the inner circumference of the through hole B into the gap S between the inserted combustible elongated body 2. A through-hole closing structure is formed by closing the hole.

2) In the through-hole blocking structure A of the above embodiment, the through-holes B and B formed in the front and back wall members 1A and 1B in the hollow wall 1 which is a fireproof structure, and the combustible long body inserted through the through-holes B and B 2, the example in which the thermal expansion refractory material 4 in which the powdery or granular thermal expansion material 4B is mixed with the sealing material 4A is filled in the two gaps S and S between the two is described. In addition to this, in a gap between a through-hole formed in a fireproof structure such as a floor or wall in which concrete has been placed and a combustible long body inserted through the hole, powder or It may be filled with a heat-expandable refractory material mixed with a granular heat-expandable material.

3) Although the said embodiment demonstrated the example which fills the clearance S between the through-hole B and the combustible elongate body 2 penetrated by this with the thermally expansible refractory material 4, this invention is not limited to this. First, as shown in FIG. 4, after pasting the thermally expandable refractory material 4 </ b > C in a paste state on the insertion portion of the flammable elongated body 2 inserted through the through hole B , the through hole B and the through hole B are inserted into this. The through-hole obstruction | occlusion structure A with which the space | gap S between the combustible elongate bodies 2 filled with the thermally expansible refractory material 4 may be sufficient.
In this case, even if the flammable elongate body 2 is burnt down or deformed, even if fire heat or flame on the fire side reaches the space 1C between the wall members 1A and 1B, it is flammable in the space 1C. The thermal expansion of the heat-expandable refractory material 4C so as to surround the long body and form a heat insulating layer can delay the spread of the fire into the space 1C.

4) In the above embodiment, the silicon sealing material is used as the sealing material 4A constituting the thermally expandable refractory material 4. However, the present invention is not limited to this, and the modified silicon type, polyisobutylene type, polysulfide type are used. Further, it may be a heat-expandable refractory material using a sealing material such as acrylic urethane, polyurethane or acrylic.

5) In the above embodiment, the combustible long body 2 is a drainage pipe. However, the present invention is not limited to this, and air conditioning pipes or electric cables in which a copper pipe is covered with a heat insulating layer made of a synthetic resin material. There may be. Further, the combustible elongate body is not limited to the one covered with the covering tube C, but may be a combustible long body such as a drain pipe not covered with the covering tube C as shown in FIG. The same effect is produced.

Side sectional view showing the main part of the through-hole blocking structure of the hollow wall Front sectional view showing the main part of the through-hole blocking structure Side sectional view showing a state where the flammable elongated body of the through hole of the hollow wall is inserted Side sectional view which shows the principal part of the through-hole obstruction | occlusion structure of another embodiment Side sectional view showing the main part of the through-hole blocking structure when a flammable long body that is not covered with a covering tube is a target

Explanation of symbols

A Through-hole blocking structure B Through-hole S Clearance 1 Hollow wall (fireproof structure)
DESCRIPTION OF SYMBOLS 1A Front side wall member 1B Back side wall member 1C Space 2 Flammable elongate body 4 Thermal expansion fireproof material 4A Sealing material 4B Thermal expansion material 5 Fire prevention / sound insulation layer 6 Sound insulation layer

Claims (4)

The gap between the inner surface and which in the inserted through the outer surface of the combustible long body of through-holes formed in the refractory structure in the fire compartment area, powdered or refractory sealing material that cures from a paste state A through-hole blocking structure in which a thermally expandable refractory material mixed with a granular thermally expandable material is filled in a state of being in close contact with the inner surface of the through-hole and the outer surface of the combustible elongated body to block the gap . The fire prevention structure is composed of a hollow wall in which wall members are used on the front and back sides and a space is formed between the wall members, and through holes are formed on the front and back wall members with the same axial center . A heat-expandable refractory material in which a powdery or granular heat-expandable material is mixed with a refractory sealant that hardens from a paste state in a gap between the inner surface and the outer surface of a combustible elongated body inserted through the inner surface. However , the through-hole blocking structure is filled in a state in which the gap is closed by being in close contact with the inner surface of the through-hole and the outer surface of the combustible elongated body .   The through-hole closing structure according to claim 1 or 2, wherein the sealing material is composed of a silicon sealing material that cures from a paste state mainly composed of silicon having fire resistance to a rubber state.   The through-hole obstruction | occlusion structure of Claim 1, 2, or 3 with which the said combustible elongate body is provided with the coating layer by which the fireproof / soundproof layer was formed inside, and the sound insulation layer was laminated | stacked on the outer side of this layer.

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