JP6364161B2 - Fire prevention compartment penetration structure and construction method thereof - Google Patents

Description

  The present invention relates to a fire prevention compartment penetration structure and a construction method thereof.

Buildings and the like are provided with fire prevention compartments for the purpose of preventing the spread of fire and the spread of smoke due to fire. This fire compartment separates the space between rooms and the upper and lower floors so that even if a fire occurs in one fire compartment, the other fire compartment is not affected by the fire. ing.
However, there are places through which the flame, smoke, etc. can pass in the fire prevention compartment. Specifically, there are through-holes or the like provided in the fire prevention compartment in order to allow the conduits to pass through the plurality of fire prevention compartments. In the event of a fire, there may be a problem of the spread of fire and the diffusion of smoke through a conduit that passes through this through hole.
As a structure corresponding to this problem, a fireproof compartment penetration structure in which a thermally expandable refractory resin tape or the like that forms an expansion residue by heat at the time of a fire is installed on the outer periphery of the conduit has been studied.
If the heat-expandable refractory resin tape or the like is installed on the outer periphery of the conduit that passes through the through hole, the heat-expandable refractory resin tape or the like expands due to heat at the time of a fire to form an expansion residue.
For this reason, if a fire or the like occurs, the through hole or the like can be blocked by an expansion residue such as the heat-expandable fireproof resin tape or the like installed in the fire prevention compartment. Can be prevented.

22 to 26 are schematic cross-sectional views for explaining a conventional fire prevention compartment penetration structure.
As shown in FIG. 22, the electric conduit 3 passes through the through hole 2 provided in the wall 1 that forms the fire prevention compartment. Next, as shown in FIG. 23, the gap between the conduit 3 and the through hole 2 is filled with a filler 4 such as putty.
Next, as shown in FIG. 24, a heat-expandable fireproof resin tape 5 is wound around the conduit 3 outside the wall 1.
Next, as shown in FIG. 25, a thermally expandable fireproof sheet 6 is installed on the wall 1 using a fixing means 7 such as a bolt so as to cover the periphery of the conduit 3 and the through hole 2. As a result, a conventional fireproof compartment penetration structure 600 is obtained (Patent Document 1).
This conventional fireproof compartment penetrating part structure 600 can be easily constructed without depending on the shape of the electric conduit 3 passing through the through hole, and is excellent in fire resistance.

Japanese Patent No. 4060844

However, in the case of the conventional fire prevention compartment penetration structure 600, it is not easy to fill the gap between the conduit 3 and the through hole 2 with a filler 4 such as putty, and there is a problem that it takes time for construction. It was.
In recent years, the construction period is often severely limited in order to reduce the construction cost. Therefore, there is a demand for a fire prevention compartment penetrating structure that can be easily constructed.
In a construction site where the shortening of the construction period is strictly required, when the construction time is insufficient, the filling work of the filler 20 such as putty that takes time for construction may be omitted.
In addition, it is not easy to determine whether or not the filler 20 such as putty is actually filled in the gap between the conduit 10 and the through-hole 2 by observing with naked eyes from the outside. However, it may take time to grasp the fact.
It is also necessary to improve the structure of the conventional fire-blocking section penetration structure 600 and its construction method so that construction errors due to such artificial mistakes and lack of construction time do not occur.

Furthermore, as a result of investigations by the present inventors, it has been found that the conventional fireproof compartment penetration structure 600 has the following problems.
FIG. 26 is a schematic cross-sectional view for explaining a state where the conduit tube 3 is inserted through the through hole 2 provided in the wall 1 at an actual construction site.
In the case of FIGS. 22 to 25 described above, an ideal state in which the conduit 3 is inserted through the central portion of the through hole 2 is illustrated.
However, in actual construction sites, the conduit 3 is often installed in contact with the lower part of the through hole 2 as shown in FIG. The conduit 3 has a considerable weight. Therefore, if there is no special support for supporting the conduit 3, the conduit 3 comes into contact with the lower portion of the through hole 2 due to the weight of the conduit 3.
It is not easy to lift the conduit 3 shown in FIG. 26 and perform the construction shown in FIGS.

  The object of the present invention is to provide a fire-blocking section penetration structure that can be easily constructed and has excellent fire resistance even when piping cables are installed in contact with a through-hole provided in a wall forming the fire-blocking section. And providing a construction method thereof.

  As a result of intensive studies by the present inventors, a fireproof section through portion structure in which piping cables are inserted through a through hole provided in a wall forming a fireproof section, and a thermally expandable fireproof sheet is installed inside the through hole. It has been found that the fire prevention compartment penetration structure being used is suitable for the purpose of the present invention, and the present invention has been completed.

That is, the present invention
[1] A fire-blocking section penetration structure in which piping cables are inserted through a through-hole provided in a wall forming the fire-blocking section,
A thermally expandable refractory sheet is installed along the inner surface of the through-hole,
The piping cables are inserted eccentrically with respect to the through hole, and at least one of the piping cables is in contact with the thermally expandable fireproof sheet installed along the inner surface of the through hole,
A sheet material is provided on at least one of the walls so as to cover a gap between the through-hole and the piping cables.

One of the present invention is
[2] The fireproof section penetrating portion structure according to the above [1], wherein the nonflammable tape is wound around the piping cables.

One of the present invention is
[3] The thermally expandable refractory sheet has a plurality of cuts in a direction substantially perpendicular to the surface of the wall,
Of the thermally expandable refractory sheet, all of the portions surrounded by the notches adjacent to each other are folded to the surface side of the wall to form a bent portion,
The fireproof section penetration structure according to the above [1] or [2], wherein the bent portion is installed between the wall and the sheet material.

One of the present invention is
[4] The above-mentioned [1] to [1], wherein the thermally expandable refractory sheet has a plurality of grooves in a direction substantially perpendicular to the surface of the wall, and the grooves are outside and the grooves are bent. [3] The fireproof compartment penetration structure according to any one of [3] is provided.

One of the present invention is
[5] The heat-expandable fireproof sheet is formed by laminating a heat-expandable fireproof resin composition layer and a base material layer,
The said groove part provides the fire prevention division penetration part structure as described in said [4] which penetrates the said thermally expansible fireproof resin composition layer and has reached the said base material layer.

One of the present invention is
[6] The shape of the heat-expandable fireproof sheet is a cylindrical shape with open ends, a cylindrical shape with both ends in contact, a cylindrical shape with overlapping portions, a spiral shape with which side surfaces do not contact, a spiral shape with side surfaces in contact, or an overlapping portion. The fireproof section penetrating structure according to any one of the above [1] to [5], which is at least one selected from the group consisting of a spiral.

One of the present invention is
[7] The fireproof compartment penetrating structure according to any one of claims 1 to 6, wherein each of the sheet material and the noncombustible tape includes at least a thermally expandable fireproof resin composition layer and a noncombustible material layer. is there.

One of the present invention is
[8] A method for constructing a fire prevention compartment penetration structure,
Is inserted eccentrically relative transmural hole, lift the piping cables in contact with the inner surface of the through hole, an inner surface of the through hole, a gap is formed between the pipe cables Step (1),
Inserting a heat-expandable fireproof sheet into the gap formed between the inner surface of the through-hole and the piping cables, installing a heat-expandable fireproof sheet along the inner surface of the through-hole, and connecting the piping cables And the step (2) of installing so that the thermally expansible fireproof sheet is in contact with,
Shea over preparative material, the step (3) to be installed on at least one wall so as to cover the gap between the pipe cables and the through hole,
The construction method of the fire prevention division penetration part structure characterized by having is provided.

One of the present invention is
[9] The non retardant tape, a step (4) to be wound on the pipe cables, there is provided a method of constructing the firestop penetration portion structure according to [8].

One of the present invention is
[10] A step (5) of forming a bent portion by bending all of the portions surrounded by the adjacent cuts of the thermally expandable fireproof sheet having a plurality of cuts to the surface side of the wall;
A step (6) of covering the bent portion of the thermally expandable refractory sheet with the sheet material and installing it between the wall and the sheet material;
The construction method of the fire prevention division penetration part structure as described in said [8] or [9] which has is provided.

One of the present invention is
[11] The fire prevention according to any one of [8] to [10], further including a step of bending the thermally expandable fireproof sheet having a plurality of grooves so that the grooves are on the outside. The construction method of a partition penetration part structure is provided.

One of the present invention is
[12] The thermally expandable fireproof sheet is formed by laminating a thermally expandable fireproof resin composition layer and a base material layer,
The groove is formed in a part of the thickness direction of the thermally expandable refractory resin composition layer,
What is provided is a construction method for a fireproof compartment penetrating structure according to the above [ 11 ], which includes a step of bending the thermally expandable fireproof sheet in a direction in which the groove portion opens to break the thermally expandable fireproof resin composition layer. It is.

One of the present invention is
[13] The heat-expandable fireproof sheet has a cylindrical shape with both ends open, a cylindrical shape with both ends in contact, a cylindrical shape with overlapping portions, a spiral shape with which side surfaces do not contact each other, a spiral shape with which side surfaces contact each other, and a spiral shape with overlapping portions Deformed into at least one shape selected from the group consisting of a shape, and having the step of installing the thermally expandable refractory sheet along the inner surface of the through hole, according to any one of the above [8] to [11]. The construction method of a fire prevention compartment penetration part structure is provided.

The fire prevention compartment penetration structure according to the present invention can be easily constructed because it is not necessary to close the gap between the piping cables and the through hole with a filler such as putty.
Further, when the fireproof compartment penetration structure according to the present invention is exposed to heat such as fire, the thermally expandable fireproof sheet installed along the inner surface of the through hole expands to form an expansion residue. Since the expansion residue closes the inside of the through-hole, the fireproof compartment penetration structure according to the present invention is excellent in fire resistance.

  Further, by using a thermally expandable fireproof sheet having notches and grooves, the heat expandable fireproof sheet can be easily installed along the inner surface of the through hole. Can be constructed.

  Moreover, since the heat-expandable fireproof sheet can be installed not only in a cylindrical shape but also in a spiral shape in the through hole provided in the wall, even if the wall is thick, it is spirally perpendicular to the wall surface. Since a heat-expandable fireproof sheet can also be arranged long in the direction, the fireproofness of the fireproof compartment penetration structure can be easily increased.

  Moreover, according to the fireproof compartment penetration part structure which concerns on this invention, even when piping cables are contacting the through-hole of a wall and inserting the said through-hole, it can construct easily.

FIG. 1 is a schematic partial cross-sectional view for explaining a state where piping cables are inserted through a through hole provided in a fire prevention section. FIG. 2 is a schematic perspective view for explaining a thermally expandable fireproof sheet used in the fireproof compartment penetration structure according to the first embodiment. FIG. 3 is a schematic perspective view for explaining the thermally expandable fireproof sheet used in the fireproof compartment penetrating portion structure according to the first embodiment. FIG. 4 is a schematic cross-sectional view for explaining a state in which a heat-expandable fireproof sheet is installed along the inner surface of the through hole provided in the fireproof compartment. FIG. 5 is a schematic cross-sectional view for explaining the fireproof compartment penetration structure according to the first embodiment in which an incombustible tape is installed. FIG. 6 is a schematic plan view for explaining a sheet material used in the fire prevention compartment penetration structure according to the first embodiment. FIG. 7 is a schematic cross-sectional view for explaining the fire prevention compartment penetration structure according to the first embodiment. FIG. 8 is a schematic cross-sectional view for explaining the fire prevention compartment penetration structure according to the first embodiment. FIG. 9 is a schematic perspective view showing a modified example of the thermally expandable fireproof sheet used in the fireproof compartment penetration structure according to the first embodiment. FIG. 10 is a schematic perspective view showing a modified example of the thermally expandable fireproof sheet used in the fireproof compartment penetration structure according to the first embodiment. FIG. 11: is a model perspective view for demonstrating the thermally expansible fireproof sheet used for the fireproof division penetration part structure which concerns on 2nd embodiment. FIG. 12 is a schematic cross-sectional view for explaining a state in which the thermally expandable refractory sheet 110 is installed along the inner surface of the through hole provided in the fire prevention section. FIG. 13: is a schematic cross section for demonstrating the fire prevention division penetration part structure which concerns on 2nd embodiment. FIG. 14 is a schematic perspective view showing a modification of the thermally expandable fireproof sheet used in the fireproof compartment penetration structure according to the second embodiment. FIG. 15 is a schematic perspective view showing a modified example of the thermally expandable fireproof sheet used in the fireproof compartment penetration structure according to the second embodiment. FIG. 16 is a schematic perspective view for explaining a thermally expandable fireproof sheet which is a modified example of the thermally expandable fireproof sheet. FIG. 17 is a schematic perspective view for explaining a heat-expandable fireproof sheet which is a modification of the heat-expandable fireproof sheet. FIG. 18 is a partially enlarged schematic cross-sectional view of a thermally expandable fireproof sheet used for the fireproof compartment penetration structure according to the third embodiment. FIG. 19 is a partially enlarged schematic cross-sectional view of a thermally expandable fireproof sheet used in the fireproof compartment penetration structure according to the third embodiment. FIG. 20 is a schematic partial cross-sectional view for explaining a plurality of thermally expandable resin composition pieces formed after breaking the thermally expandable resin composition layer. FIG. 21 is a schematic partial cross-sectional view for explaining a plurality of thermally expandable resin composition pieces formed after breaking the thermally expandable resin composition layer. FIG. 22 is a schematic cross-sectional view for explaining a conventional fireproof compartment penetration structure. FIG. 23 is a schematic cross-sectional view for explaining a conventional fireproof compartment penetration structure. FIG. 24 is a schematic cross-sectional view for explaining a conventional fire prevention compartment penetration structure. FIG. 25 is a schematic cross-sectional view for explaining a conventional fire prevention compartment penetration structure. FIG. 26 is a schematic cross-sectional view for explaining a conventional fire prevention compartment penetration structure.

1st embodiment of the fire prevention division penetration part structure which concerns on this invention is described, referring drawings.
FIG. 1 is a schematic partial cross-sectional view for explaining a state in which piping cables 30 are inserted through a through hole 20 provided in a fire prevention section.
In FIG. 1, a wall 10 is used as the fire protection compartment.
Specific examples of the fire prevention compartment that can be used in the present invention include, for example, a wall of a building, a steel fire prevention compartment of a ship, a steel plate provided in a cabin, and the like.
In addition, the fire prevention section used in the present invention is not limited to a vertical section, and a horizontal section such as a steel floor such as a floor or ceiling provided in a ship's fire prevention compartment or a ship's cabin, such as a floor or ceiling of a building, may also be used. it can

  Specific examples of the fireproof compartment used in the present invention include concrete slabs such as floors, ceilings, walls, and heat resistant panels.

Examples of the heat-resistant panel include a cement panel and an inorganic ceramic panel.
Examples of the cement-based panel include hard wood piece cement boards, inorganic fiber-containing slate boards, lightweight cellular concrete boards, mortar boards, and precast concrete boards.
Examples of the inorganic ceramic panel include a gypsum board, a calcium silicate board, a calcium carbonate board, a mineral wool board, and a ceramic board.

Here, the gypsum board is specifically formed by mixing lightweight materials such as sawdust and pearlite into calcined gypsum and pasting cardboard on both sides. For example, ordinary gypsum board (JIS A690)
1 compliant: GB-R), decorative gypsum board (JIS A6911 compliant: GB-D), waterproof gypsum board (JIS A6912 compliant: GB-S), reinforced gypsum board (JIS A6913 compliant: GB-F), sound-absorbing gypsum board (JIS A6301 compliant: GB-P) and the like.

  The said heat-resistant panel can use 1 type, or 2 or more types.

As shown in FIG. 1, the plurality of piping cables 30 inserted through the through holes 20 provided in the wall are in contact with the inner surface of the through holes 20.
In the present invention, it is not necessary that all the piping cables 30 are in contact with the inner surface of the through hole 20, and it is sufficient that at least one of the piping cables 30 is in contact with the inner surface of the through hole 20.

The piping cables 30 used in the present invention include, for example, refrigerant pipes, heat transfer pipes, water pipes, sewage pipes, pouring / draining pipes, fuel transfer pipes, liquid transfer pipes such as hydraulic pipes, gas pipes, heating and cooling units. Examples thereof include gas transfer pipes such as medium transfer pipes and vent pipes, cables such as electric wire cables, optical fiber cables, and ship cables.
Among these, from the viewpoint of workability, liquid transfer pipes and cables such as refrigerant pipes, heat transfer pipes, water pipes, sewage pipes, drainage pipes, fuel transfer pipes, hydraulic pipes, and the like are preferable. Refrigerant pipes, heat transfer pipes Cables are more preferable.

  Specific examples of the cables include a power line cable, an antenna line cable, and an optical fiber cable. Piping cables can use single core or two or more cores.

The power line cable, the antenna line cable, and the like are preferably made by coating a metal wiring such as copper with an insulator such as polyethylene resin, vinyl chloride resin, or glass fiber.
As the optical fiber cable, an optical fiber made of synthetic resin, glass, or the like can be used.

In the case of the first embodiment according to the present invention, what is used as the piping cables 30 is such that the power line cable 31 is inserted through the flexible electric cable 32.
The flexible conduit 32 is made of synthetic resin and can be freely bent, and a commercially available product can be appropriately selected and used. The flexible conduit 32 is preferably any one that conforms to JIS C8411.
Note that one or more of the piping cables 30 can be selected from the liquid transfer pipes, gas transfer pipes, cables, and the like.

2 and 3 are schematic perspective views for explaining a thermally expandable fireproof sheet used in the fireproof compartment penetration structure according to the first embodiment.
As shown in FIG. 2, the thermally expandable refractory sheet 100 has a plurality of cuts 40.
All of the portion 41 surrounded by the notches 40 and 40 adjacent to each other is bent at a right angle with respect to the thermally expandable refractory sheet 100 to form a bent portion 42.
The notch 40 was adjusted to be substantially perpendicular to the surface of the wall 10 when the thermally expandable fireproof sheet 100 was installed along the inner surface of the through hole 20.
Here, “substantially perpendicular” means an angle within a range of plus or minus 5 degrees with respect to the vertical direction.

Next, the heat-expandable fireproof sheet 100 having the shape shown in FIG. 3 is obtained by deforming the heat-expandable fireproof sheet 100 in a round shape.
Since the shape of the through-hole 20 provided in the wall 10 used in the fire-protection compartment through-portion structure according to the first embodiment is circular, the thermally expandable fireproof sheet 100 is placed inside the through-hole 20. Rounded so that it can be installed along.
When the shape of the through hole 20 is a polygon other than a circle, an ellipse, or the like, the thermally expandable fireproof sheet 100 may be deformed according to the shape.

FIG. 4 is a schematic cross-sectional view for explaining a state in which the thermally expandable refractory sheet 100 is installed along the inner surface of the through hole 20 provided in the fire prevention section. It shows the state observed from.
First, the piping cables 30 are lifted to form a gap between the inner surface of the through hole 20 and the piping cables 30.
Subsequently, the thermally expandable fireproof sheet 100 can be installed along the inner surface of the through hole 20 by inserting the thermally expandable fireproof sheet 100 into the gap.

The heat-expandable fireproof sheet 100 used in the fireproof compartment penetrating structure according to the first embodiment is manufactured by Sekisui Chemical Co., Ltd. Fiblock (registered trademark. Thermoplastic resin such as butyl rubber, heat-expandable graphite, and inorganic filler. And the like, and a heat-expandable resin composition layer 101 made of a heat-expandable resin composition and a base material layer 102 made of an aluminum foil laminated glass cloth are laminated in a sheet shape).
Since the heat-expandable fireproof sheet 100 is commercially available, a commercially available heat-expandable fireproof sheet can be appropriately selected and used.
The type, thickness, etc. of the thermally expandable fireproof sheet 100 are the expansion residue formed by the thermally expandable fireproof sheet 100 when the fireproof compartment penetration structure according to the first embodiment is exposed to heat such as fire. Can be adjusted so that the inside of the through hole 20 of the wall 10 can be closed.

Next, the bent portion 42 of the thermally expandable fireproof sheet 100 is bent to the surface side of the wall 10.
Subsequently, the non-combustible tape 50 is wound around the piping cables 30.
FIG. 5 is a schematic cross-sectional view for explaining the fireproof compartment penetration structure 500 according to the first embodiment in which the nonflammable tape 50 is installed.
The non-combustible tape 50 used in the fireproof compartment penetration structure according to the first embodiment is a fibro (registered trademark) manufactured by Sekisui Chemical Co., Ltd., heat such as thermoplastic resin such as butyl rubber, thermally expandable graphite, and inorganic filler. A heat-expandable resin composition layer made of an expandable resin composition and an incombustible material layer made of an aluminum foil laminated glass cloth). A tackifier is added to the thermally expandable resin composition layer contained in the non-combustible tape 50, and the non-combustible tape 50 has adhesiveness.
For this reason, the said nonflammable tape 50 can be installed along the surrounding shape of the said several piping cables 30 by winding the said nonflammable tape 50 around the said several piping cables 30. As shown in FIG.

Next, the bent portion 42 of the thermally expandable fireproof sheet 100 is covered with the sheet material 60 and installed between the wall 10 and the sheet material 60.
FIG. 6 is a schematic plan view for explaining the sheet material 60 used in the fire prevention compartment penetration structure 500 according to the first embodiment.
As shown in FIG. 6, the sheet material 60 was cut from one end of the sheet material 60 using cutting means such as scissors to form a cut-out portion 62 inside. The cutout portion 62 substantially matches the shape around the plurality of piping cables 30.
The same material as the thermally expandable fireproof sheet 100 used previously was used for the sheet material 60.

FIG. 7 and FIG. 8 are schematic cross-sectional views for explaining the fire prevention compartment penetration structure 500 according to the first embodiment.
The cut 61 of the sheet material 60 was opened, and the plurality of piping cables 30 were inserted into the cut-out portion 62 of the sheet material 60.
By fixing the sheet material 60 to the wall 10, it is possible to obtain the fire prevention compartment penetration structure 500 according to the first embodiment shown in FIGS. 7 and 8.
Examples of means for fixing the sheet material 60 to the wall 10 include a tucker, a bolt, and an adhesive. In the case of the fireproof compartment penetration structure 500 according to the first embodiment, the sheet material 60 is fixed to the wall 10 together with the thermally expandable fireproof sheet 100 using a tucker 80.

  In the present invention, the bent portion 42 of the thermally expandable fireproof sheet 100 can be independently fixed to the wall 10 as necessary. The means for fixing the bent portion 42 of the thermally expandable fireproof sheet 100 to the wall 10 is the same as the means for fixing the sheet material 60 described above to the wall 10.

The fire prevention compartment penetration structure 500 according to the first embodiment can be easily constructed. In addition, when the fireproof compartment penetration structure 500 according to the first embodiment is exposed to the heat of a fire, the thermally expandable fireproof sheet 100, the sheet material 60, and the nonflammable tape expand to form an expansion residue. To do.
This expansion residue closes the through hole 20 of the wall 10. For this reason, even when a fire or the like occurs in one of the fire prevention sections formed by the wall 10, it is possible to prevent the spread of fire and the diffusion of smoke due to the fire or the like to the other fire prevention section.

Next, a modified example of the fireproof compartment penetration structure 500 according to the first embodiment will be described.
9 and 10 are schematic perspective views showing modifications of the thermally expandable fireproof sheet 100 used in the fireproof compartment penetrating structure 500 according to the first embodiment.

As shown in FIG. 3, the thermally expandable fireproof sheet 100 used in the fireproof compartment penetrating structure 500 according to the first embodiment has both ends of the thermally expandable fireproof sheet 100 abutted to each other. The shape was formed.
The shape of the heat-expandable refractory sheet 100 is not limited to the shape shown in FIG. 3, and for example, as shown in FIG. 9, a cylindrical shape in which both ends 103 and 103 of the heat-expandable refractory sheet 100 are opened. The shape may be sufficient, and as shown in FIG. 10, there may be overlapping portions at both ends 103 of the thermally expandable fireproof sheet 100.

  Even if the thermally expandable fireproof sheets 100a and 100b having the shape shown in FIG. 9 or FIG. 10 are used in place of the thermally expandable fireproof sheet 100 having the shape shown in FIG. As in the case of, a fireproof compartment penetration structure can be obtained.

Next, the fireproof compartment penetration structure according to the second embodiment will be described.
The relationship between the wall 10, the through hole 20 and the plurality of piping cables 30 used in the fire prevention compartment penetration structure according to the second embodiment is the same as that of the fire protection compartment penetration structure 500 according to the first embodiment described above. Same as the case.

  FIG. 11: is a model perspective view for demonstrating the thermally expansible fireproof sheet used for the fireproof division penetration part structure which concerns on 2nd embodiment.

As shown in FIG. 11, the thermally expandable fireproof sheet 110 has a plurality of grooves 70.
As shown in FIG. 10, the thermally expandable fireproof sheet 110 used in the fireproof compartment penetration structure according to the second embodiment is a fibro (registered trademark; heat of epoxy resin, etc.) manufactured by Sekisui Chemical Co., Ltd. A heat-expandable resin composition layer made of a heat-expandable resin composition such as a curable resin, heat-expandable graphite, and an inorganic filler, and a base material layer made of a nonwoven fabric laminated in a sheet form) It consists of an expandable resin composition layer 111 and a base material layer 112 made of nonwoven fabric.

The groove portion 70 extends from one side 114 to the other side 115 of the thermally expandable fireproof sheet 110 and is provided in parallel to each other with a gap therebetween.
The tubular thermally expandable refractory sheet 110 can be obtained by bending the thermally expandable refractory sheet 110 at the groove portion 70 with the groove portion 70 on the outside.

The heat-expandable fireproof sheet 110 has a heat-expandable resin composition layer 111 containing a thermosetting resin such as an epoxy resin. Usually, a thermosetting resin such as an epoxy resin is less flexible and hard. It is a feature.
As shown in FIG. 11, by forming the plurality of groove portions 70 in the thermally expandable fireproof sheet 110, even when the thermally expandable fireproof sheet 110 is hard, it can be easily bent.

As said base material layer used for this invention, a combustible layer, a nonflammable layer, etc. can be mentioned, for example.
Examples of the material used for the combustible layer include one or more of cloth materials, paper materials, wood, natural resins, synthetic resins, and the like.
Moreover, as a raw material used for the said incombustible layer, 1 type, or 2 or more types, such as a metal and an inorganic material, can be mentioned, for example.

FIG. 12 is a schematic cross-sectional view for explaining a state in which the thermally expandable refractory sheet 110 is installed along the inner surface of the through hole 20 provided in the fire prevention section. It shows the state observed from.
First, the piping cables 30 are lifted to form a gap between the inner surface of the through hole 20 and the piping cables 30.
Subsequently, the thermally expandable fireproof sheet 110 can be installed along the inner surface of the through hole 20 by inserting the thermally expandable fireproof sheet 110 into the gap.

FIG. 13: is a schematic cross section for demonstrating the fire prevention division penetration part structure 510 which concerns on 2nd embodiment.
A sheet material 63 made of an aluminum foil laminated glass cloth was fixed to the wall 10 so as to cover the gaps between the through hole 20 and the plurality of piping cables 30.
Similarly to the case of FIG. 6, the sheet material 63 is also formed with a cut 61 and a cut-out portion 62, and the cut-out portion 62 substantially matches the shape around the plurality of piping cables 30.
Similarly to the case of the first embodiment, the cut 61 of the sheet material 63 is opened and the plurality of piping cables 30 are inserted into the cut-out portion 62 of the sheet material 63 so that the sheet material 63 is inserted into the wall 10. Fixed.
The means for fixing the sheet material 63 to the wall 10 employs a tucker as in the case of the first embodiment.

  Next, the nonflammable tape 51 made of an aluminum foil laminated glass cloth is wound around the plurality of piping cables 30 to obtain the fireproof section penetrating portion structure 510 according to the second embodiment.

The fire protection compartment penetration structure 510 according to the second embodiment can be easily constructed. Moreover, when the fireproof compartment penetration part structure 510 which concerns on 2nd embodiment is exposed to the heat of a fire, the said thermally expansible fireproof sheet 110 expand | swells and forms an expansion | swelling residue.
This expansion residue closes the through hole 20 of the wall 10. For this reason, even when a fire or the like occurs in one of the fire prevention sections formed by the wall 10, it is possible to prevent the spread of fire and the diffusion of smoke due to the fire or the like to the other fire prevention section.

Next, a modified example of the fire protection compartment penetration structure 510 according to the second embodiment will be described.
14 and 15 are schematic perspective views showing modifications of the thermally expandable fireproof sheet 110 used in the fireproof compartment penetration structure 510 according to the second embodiment.

The heat-expandable fireproof sheet 110 used in the fireproof compartment penetrating portion structure 510 according to the second embodiment has a cylindrical shape formed by abutting both ends of the heat-expandable fireproof sheet 110.
The shape of the heat-expandable fireproof sheet 110 is not limited. For example, as shown in FIG. 14, the heat-expandable fireproof sheet 110a may have a cylindrical shape in which both ends 113 and 113 are open. As shown in FIG. 4, there may be overlapping portions at both ends 113 of the thermally expandable fireproof sheet 100b.

16 and 17 are schematic perspective views for explaining a heat-expandable fireproof sheet 120 which is a modification of the heat-expandable fireproof sheet 110. FIG.
In the thermally expandable fireproof sheet 120, a plurality of grooves 71 are formed in parallel with each other obliquely with respect to the longitudinal direction of the thermally expandable fireproof sheet.
The spiral heat-expandable fireproof sheet 120 shown in FIG. 17 is obtained by bending the heat-expandable fireproof sheet 120 at the groove 71 portion with the groove portions 71 being outside.
By changing the inclination of the groove 71, the spiral heat-expandable refractory sheet 120 is adjusted to at least one of a spiral shape in which the side surface is not in contact, a spiral shape in which the side surface is in contact, and a spiral shape in which the overlapping portion is present. be able to.

  Even if the thermally expandable refractory sheet 110 or 120 having the shape shown in FIG. 14, FIG. 15, FIG. 17 or the like is used in place of the thermally expandable refractory sheet 110 having the shape shown in FIG. As in the case of the second embodiment, a fireproof compartment penetration structure can be obtained.

Next, the fireproof compartment penetration structure according to the third embodiment will be described.
In the fireproof compartment penetrating part structure 520 according to the third embodiment, the thermally expandable fireproof sheet 130 to be used includes a thermally expandable resin composition layer 111 containing a thermosetting resin such as an epoxy resin, and a non-woven fabric base. It consists of a material layer 112.
18 and 19 are partially enlarged schematic cross-sectional views of the thermally expandable fireproof sheet 130 used in the fireproof compartment penetration structure 520 according to the third embodiment.
As illustrated in FIG. 18, when the thermally expandable resin composition layer 111 containing a thermosetting resin such as the epoxy resin is bent in a direction in which the groove portion 70 is opened, the thermally expandable fireproof sheet 130 is included. The thermally expandable resin composition layer 111 containing the thermosetting resin such as the epoxy resin causes brittle fracture as illustrated in FIG.

In FIG. 19, for the convenience of explanation, the state where the thermally expandable fireproof sheet 130 is bent is emphasized.
Although the heat-expandable fireproof sheet 130 may be bent with the naked eye, the heat-expandable resin composition layer 111 containing a thermosetting resin such as the epoxy resin included in the heat-expandable fireproof sheet 130 may be used. Are bent in the direction in which the groove portion 70 is opened, and at the same time, the thermally expansible resin composition layer 111 containing a thermosetting resin such as the epoxy resin often breaks due to brittle fracture.

  The cross-sectional shape of the groove portion 70 employed in the present invention is such that the stress is applied to the thermally expandable resin composition layer 111 containing the thermosetting resin such as the epoxy resin in a direction in which the groove portion 70 is expanded. There is no particular limitation as long as the thermally expandable resin composition layer 111 containing a thermosetting resin such as an epoxy resin causes brittle fracture. For example, in addition to the V shape, the U shape, the I shape, etc. Or the like.

20 and 21 are schematic diagrams for explaining a plurality of thermally expandable resin composition pieces 111a formed after breaking the thermally expandable resin composition layer 111 containing the thermosetting resin such as the epoxy resin. It is a fragmentary sectional view.
The groove portion 70 penetrates through the thermally expandable refractory resin composition layer 111 and reaches the base material layer 112.
By dividing the thermally expandable resin composition layer 111 containing a thermosetting resin such as the epoxy resin along the groove portion 70, a thermally expandable resin composition layer containing a thermosetting resin such as the epoxy resin is divided. 111 is divided into a plurality of thermally expandable resin composition pieces 111a.

The thermally expandable resin composition piece 111a is fixed to the base material layer 112, and after the thermally expandable resin composition layer 111 containing a thermosetting resin such as the epoxy resin is cracked, the thermally expandable resin composition It is possible to prevent the object piece 111a from falling off the base material layer 112.
Moreover, by using a soft material as the base material layer 112, the epoxy resin-containing thermally expandable resin composition sheet 120 can be bent freely.

  In the case of the fireproof compartment penetrating structure 510 according to the second embodiment, the third embodiment can be more easily realized by using the thermally expandable fireproof sheet 120 instead of the thermally expandable fireproof sheet 110. Such a fireproof compartment penetration structure 520 can be obtained.

  The fire-blocking section penetration structure according to the present invention can be easily constructed and has excellent fire resistance, so that the fire resistance of the piping cables inserted through the through-holes provided in the fire-blocking section of buildings, ships, etc. is improved. Can be applied widely.

DESCRIPTION OF SYMBOLS 1,10 Wall 3 Conduit tube 2,20 Through-hole 7 Fixing means 30 Electric wire cable 31 Power line cable 32 Flexible electric wire tube 40,61 Cut 41 Part surrounded by cut 42 Bending part 50 Nonflammable tape 60, 63 Sheet material 62 Cutout portion 70, 71 Groove portion 80 Tucker 6, 100, 100a, 100b, 110, 110a, 110b, 130 Thermally expandable refractory sheet 101, 111 Thermally expandable resin composition layer 111a Thermally expandable resin composition piece 102, 112 base Material layer 103,113 Both ends 114,115 One side of a thermally expandable fireproof sheet 500,510,520,600

Claims (13)

A fire section penetrating structure in which piping cables are inserted through through holes provided in a wall forming the fire section,
A thermally expandable refractory sheet is installed along the inner surface of the through-hole,
The piping cables are inserted eccentrically with respect to the through hole, at least one of the piping cables is in contact with the thermally expandable fireproof sheet installed along the inner surface of the through hole, and a sheet material The fireproof section penetrating portion structure is installed on at least one of the walls so as to cover a gap between the through hole and the piping cables.   The fireproof section penetrating portion structure according to claim 1, wherein a nonflammable tape is wound around the piping cables. The thermally expandable refractory sheet has a plurality of cuts in a direction substantially perpendicular to the surface of the wall, and all of the portions of the thermally expandable refractory sheet surrounded by the cuts adjacent to each other are formed on the wall. Folded to the front side to form a folded part,
The fireproof compartment penetration structure according to claim 1 or 2, wherein the bent portion is installed between the wall and the sheet material.   The heat-expandable fireproof sheet has a plurality of grooves in a direction substantially perpendicular to the surface of the wall, and is bent at a portion of the grooves with the grooves being outside. The fire compartment penetrating part structure described in 1. The thermally expandable fireproof sheet is formed by laminating a thermally expandable fireproof resin composition layer and a base material layer,
The fire-blocking section penetration structure according to claim 4, wherein the groove portion reaches the base material layer through the thermally expandable fire-resistant resin composition layer.   The shape of the heat-expandable fireproof sheet is a cylindrical shape with both ends open, a cylindrical shape with both ends in contact, a cylindrical shape with overlapping portions, a spiral shape with which side surfaces do not touch, a spiral shape with side surfaces touching, or a spiral shape with overlapping portions The fire prevention compartment penetration structure according to any one of claims 1 to 5, which is at least one selected from the group consisting of:   Each of the said sheet material and a nonflammable tape is a fireproof division penetration part structure in any one of Claims 1-6 containing at least a thermally expansible fireproof resin composition layer and a nonflammable material layer. It is a method of constructing a fire prevention compartment penetration structure,
Is inserted eccentrically relative transmural hole, lift the piping cables in contact with the inner surface of the through hole, an inner surface of the through hole, a gap is formed between the pipe cables Step (1),
Inserting a heat-expandable fireproof sheet into the gap formed between the inner surface of the through-hole and the piping cables, installing a heat-expandable fireproof sheet along the inner surface of the through-hole, and connecting the piping cables And the step (2) of installing so that the thermally expansible fireproof sheet is in contact with,
Shea over preparative material, the step (3) to be installed on at least one wall so as to cover the gap between the pipe cables and the through hole,
The construction method of the fireproof compartment penetration part structure characterized by having. Non retardant tape, a step (4) to be wound on the pipe cables, construction method of firestop penetration portion structure according to claim 8. A step (5) of forming a bent portion by bending all of the portions surrounded by the adjacent cuts of the thermally expandable fireproof sheet having a plurality of cuts to the surface side of the wall;
A step (6) of covering the bent portion of the thermally expandable refractory sheet with the sheet material and installing it between the wall and the sheet material;
The construction method of the fire prevention division penetration part structure of Claim 8 or 9 which has these.   The construction of a fireproof compartment penetration part structure according to any one of claims 8 to 10, further comprising a step of bending the thermally expandable fireproof sheet having a plurality of grooves so that the grooves are on the outside. Method. The thermally expandable fireproof sheet is formed by laminating a thermally expandable fireproof resin composition layer and a base material layer,
The groove is formed in a part of the thickness direction of the thermally expandable refractory resin composition layer,
The construction method of the fireproof compartment penetration part structure of Claim 11 which has the process of bending the said thermally expansible fireproof sheet in the direction which the said groove part opens, and cracking the said thermally expansible fireproof resin composition layer.   The heat-expandable fireproof sheet has a cylindrical shape with both ends open, a cylindrical shape with both ends touching, a cylindrical shape with overlapping portions, a spiral shape with which side surfaces do not touch, a spiral shape with side surfaces touching, and a spiral shape with overlapping portions. The fireproof compartment penetration structure according to any one of claims 8 to 11, further comprising a step of deforming into at least one shape selected from a group and installing the thermally expandable fireproof sheet along the inner surface of the through hole. Construction method.

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