JP7130815B2 - Fireproof structure of fireproof partition wall - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fire prevention structure for a fire prevention partition wall in which a long penetrating member is inserted through a through hole provided in the fire prevention partition wall.

2. Description of the Related Art Conventionally, through-holes are formed in fireproof partition walls in buildings so that wiring and piping materials as long penetrating members can be passed through the fireproof partition walls. A fireproof structure is provided in such a fireproof partition wall. The fire prevention structure of the fire protection partition wall prevents flames, smoke, and toxic gases from flowing into the other side through the through-holes when, for example, a fire breaks out on the front side of one of the walls sandwiching the fire protection partition wall. is provided to do so. The fire prevention structure is designed to prevent flames, smoke, and toxic gases from flowing into the side opposite to the side where the fire occurs by closing the through-holes when a fire or the like occurs.

As such a fire prevention structure, a plurality of blocking members are accommodated between the inner surface of the through-hole and the outer surface of the wiring/piping material. There is something that closes the Examples of the blocking member include an inorganic fiber mat disclosed in Patent Document 1. This inorganic fiber mat is formed by providing a plurality of slits in the surface of the raw material mat, and the slits form a plurality of strip-shaped split pieces in the raw material mat.

Inorganic fibers impart incombustibility or flame retardancy to the inorganic fiber mat, and examples of inorganic fibers include rock wool and ceramic fibers. A plurality of inorganic fiber mats are arranged between the inner surface of the through hole and the outer surface of the wiring/piping material. The inorganic fiber mat is in contact with the wiring/piping material. By applying pressure to the inorganic fiber mat, compressive deformation is effectively generated at the contact ends of the split pieces, eliminating the gap between the inorganic fiber mat and the wiring/piping material. As a result, the space around the wiring/piping material is closed while maintaining sufficient fireproof performance.

JP-A-2002-271948

However, in the fire prevention structure using the inorganic fiber mat of Patent Document 1, in order to eliminate the gap between the inorganic fiber mat and the wiring/piping material, the inorganic fiber is compressed by a pressure device provided separately from the inorganic fiber mat. You need to keep applying pressure to the mat.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire prevention structure for a fire prevention partition wall that can press a closing member against the outer surface of a penetrating member without using a pressurizing device.

A fire prevention structure for a fire prevention partition wall for solving the above problems is a fire prevention structure for a fire prevention partition wall in which a long penetrating member is inserted through a through hole provided in the fire prevention partition wall, Between the outer surface of the member and the inner surface of the through-hole, a plurality of closing members having a flat plate-shaped base made of foam and having a reaction force to return to the original shape when the base is compressed, Encloses the penetrating member and is accommodated in a plurality of rows extending in a direction in which the outer surface of the penetrating member and the inner surface of the through hole face each other, and in a state in which a plurality of layers are laminated in the facing direction. Then, each of the plurality of blocking members is compressed in the thickness direction, and the blocking member in contact with the outer surface of the penetrating member compresses the outer surface of the penetrating member by its own reaction force and the reaction force of other stacked blocking members. and at least one of the plurality of laminated closing members has thermal expansion performance.

Further, in the fire prevention structure of the fire prevention partition wall, it is preferable that the at least one closing member having thermal expansion performance is a closing member that contacts the outer surface of the penetrating member.
Further, in the fire prevention measure structure of the fire prevention partition wall, all closing members accommodated between the outer surface of the through member and the inner surface of the through hole may have thermal expansion performance.

Further, in the fire prevention structure of the fireproof partition wall, among the plurality of closing members accommodated between the outer surface of the penetrating member and the inner surface of the through hole, at least the closing member in contact with the outer surface of the penetrating member is A plurality of slits extending in a thickness direction from a surface of the closing member that contacts the penetrating member may be provided, and a plurality of block portions formed by dividing the base portion by the slits may be provided.

Further, with regard to the fire prevention measure structure of the fire prevention partition wall, the closing member includes a sheet material attached to at least one of the surfaces located at both ends in the thickness direction of the base, and the surface of the sheet material The frictional resistance is less than the frictional resistance of the surface of the base.

Further, with regard to the fire prevention measure structure of the fire prevention partition wall, the sheet material may be attached independently to each of the block portions.
Further, regarding the fire prevention measure structure of the fireproof partition wall, the closing member is cut into small gaps formed between the outer surface of the penetrating member and the inner surface of the through hole and smaller than the closing member. A gap closing member may be accommodated.

Further, in the fire prevention measure structure of the fire prevention partition wall, the closing members adjacent to each other in the stacking direction may be joined together.

According to the present invention, the closing member can be brought into pressure contact with the penetrating member without using a pressurizing device.

The front view which shows the fire prevention measure structure in the fire prevention partition wall of embodiment. (a) is a perspective view showing a fireproof member, (b) is an exploded perspective view showing a fireproof member. (a) is a partial front view showing a fireproof member, and (b) is a partial front view showing a state in which the fireproof member is cut with scissors. The perspective view which shows the state which cut|disconnected the fire-resistant member and formed the fire-resistant member for clearance gaps. The perspective view which shows the state which made the wiring and piping material support rack support the wiring and piping materials. The front view which shows the state which piled up the fireproof member so that a wiring and piping material might be surrounded. The perspective view which shows the state which stuffs a fireproof member into a clearance gap. The perspective view which shows the fireproof member of example of another. The perspective view which shows the state which cut|disconnected the base by hand. The perspective view which shows the fireproof member of example of another. FIG. 4 is a perspective view showing a fire-resistant member having a sheet material attached only to the long side edges of the base; The perspective view which shows another example of a through-hole. The front view which shows another example of the method of accommodating a fireproof member.

An embodiment embodying a fire prevention measure structure of a fire prevention partition wall will be described below with reference to FIGS. 1 to 8. FIG.
As shown in FIG. 1 or FIG. 5, the fireproof partition wall W made of concrete is provided with a rectangular hole-shaped through hole Wa when viewed from the front. The through hole Wa penetrates the fireproof partition wall W in the thickness direction. A plurality of wiring/piping members 11 are inserted through the through holes Wa as through members. The wiring/piping material 11 is a general term for wiring (control cables, coaxial cables, optical cables, etc.) and piping materials (synthetic resin flexible conduits, steel conduits, etc.) installed in a building. It's about. The wiring/piping material 11 is elongated. In this embodiment, wiring/piping members 11 having different diameters are inserted through the through holes Wa.

The wiring/piping member 11 is supported from below by a wiring/piping member support rack 20 . The wiring/piping material support rack 20 has a long ladder shape. The wiring/piping material support rack 20 has a pair of long members 20a and a plurality of support members 20b spanning the pair of long members 20a. The wiring/piping material support rack 20 is disposed in a state in which a pair of long members 20a are inserted through the through holes Wa and the pair of long members 20a face each other in the left-right direction. The support member 20b is not arranged in the through hole Wa, and the support member 20b is arranged outside both sides of the fire prevention partition wall W in the thickness direction. The wiring/piping member 11 is supported by a plurality of supporting members 20b.

As shown in FIG. 1, a plurality of fireproof members 30 as blocking members are accommodated between the inner surface of the through hole Wa and the outer surface of the wiring/piping member 11 on both sides in the thickness direction of the fireproof partition wall W. , the fireproof structure of the fireproof partition wall W is constructed by a plurality of fireproof members 30 . The fireproof member 30 is a closing member having thermal expansion performance.

As shown in FIG. 2(a), FIG. 2(b), or FIG. 3(a), the fireproof member 30 constructing the fire prevention structure includes a rectangular plate-shaped base 31 and a sheet material adhered to the base 31. 41 and . Of the six side surfaces of the base 31, one of the two rectangular surfaces having the largest area is a first surface 31a, and the other is a second surface 31b. The direction in which the straight line L connecting the first surface 31 a and the second surface 31 b extends is defined as the thickness direction of the base portion 31 . The first surface 31a and the second surface 31b are surfaces located at both ends of the base portion 31 in the thickness direction. In other words, the first surface 31a and the second surface 31b are surfaces on both sides of the base 31 in the thickness direction. As shown in FIG. 1, there are two types of fire-resistant members 30 with different thicknesses. 30 is described as a second fire-resistant member 30B.

As shown in FIG. 2(a) or FIG. 2(b), a direction along the first surface 31a and the second surface 31b of the base portion 31 and perpendicular to the longitudinal direction is defined as a lateral direction. The thickness direction, longitudinal direction and lateral direction of the base 31 match the thickness direction, longitudinal direction and lateral direction of the fireproof member 30 . In the first surface 31a and the second surface 31b, a pair of side edges extending in the longitudinal direction are defined as long side edges 31c, and a pair of side edges extending in the width direction are defined as short side edges 31d.

The base portion 31 is made of a foam having thermal expansion performance. Specifically, the base portion 31 is made of a foam in which a thermal expansion material is uniformly dispersed in a base material. Such a base portion 31 is obtained by foaming only the foaming agent in the matrix material in which the thermal expansion material and the foaming agent are kneaded into the matrix. In this embodiment, expanded graphite is used as the thermal expansion material, and polymer is used as the base material, and more specifically, synthetic rubber is used. Chloroprene rubber is used as the synthetic rubber. In addition to chloroprene rubber, synthetic rubbers include ethylene propylene diene rubber (EPDM), natural rubber (NR), synthetic natural rubber (IR), isoprene rubber, butadiene rubber (BR), styrene butadiene rubber (SBR), Butyl rubber (IIR) and nitrile rubber (NBR) can be mentioned.

The foaming starting temperature of the foaming agent is 130 to 200°C, and the foaming starting temperature of the expanded graphite is 120 to 300°C. In this embodiment, the foaming agent used has a lower foaming start temperature than the thermal expansion material (expanded graphite). For example, when expanded graphite with a foaming start temperature of 250°C is used, a foaming agent with a foaming start temperature of 160°C is used.

As a method for manufacturing the base portion 31, for example, after adjusting the base material material by uniformly dispersing the expanded graphite and the foaming agent in chloroprene rubber, the expanded graphite is heated at a temperature lower than the temperature at which the expanded graphite expands so that the expanded graphite does not expand. The matrix material is heated to foam the blowing agent.

The base 31 is spongy and has a large number of fine air bubbles formed by foaming of the foaming agent. Further, the base portion 31 has rubber elasticity due to the expanded chloroprene rubber.

As indicated by the two-dot chain line in FIG. 3A, the base portion 31 is compressively deformable in the thickness direction, and also compressively deformable in the longitudinal and lateral directions (not shown). The base 31 has a reaction force that tends to return to the original shape from the compressed state. Here, for example, a blocking member made of ceramic wool or rock wool as a base material is taken as a comparative example. It remains approximately in its compressed shape. On the other hand, the base portion 31 of this embodiment has a very large reaction force, and even if it is compressed, it tries to immediately return to its original shape.

Since the base portion 31 contains expanded graphite, the base portion 31 expands in volume several times or more before heating when subjected to heat of a predetermined temperature (for example, 250° C.) or higher. Therefore, the base 31 is compressively deformable by the foamed chloroprene rubber and thermally expandable by the expanded graphite.

As shown in FIG. 2( a ), FIG. 2( b ), or FIG. 3( a ), the fireproof member 30 has a plurality of slits 32 in the base 31 . The slit 32 extends from the first surface 31a of the base 31 in the thickness direction. The slits 32 extend along the entire widthwise direction so as to connect the pair of long side edges 31c of the first surface 31a, and are present at regular intervals along the lengthwise direction of the base portion 31 . When the base 31 is viewed from the thickness direction, the plurality of slits 32 are parallel to each other. Assuming that the dimension of the slits 32 along the thickness direction of the base 31 is the depth, all the slits 32 have the same depth. Also, the slit 32 does not reach the second surface 31 b of the base 31 .

A connecting portion 33 is provided in a portion of the base portion 31 closer to the second surface 31b than the slit 32 is. Since all the slits 32 have the same depth, the dimension of the connecting portion 33 along the thickness direction of the base portion 31 is also the same. The connecting portion 33 extends over the entire width direction so as to connect the pair of long side edges 31c of the first surface 31a. The thickness, which is the dimension of the connecting portion 33 along the thickness direction of the base portion 31 , is smaller than the depth of the slit 32 . The connecting portion 33 can be cut by hand or by a manual cutting tool such as scissors or a cutter.

The base portion 31 is divided into a plurality of block portions 34 by a plurality of slits 32 . The slits 32 are arranged at equal intervals in the longitudinal direction of the base 31 , and block portions 34 adjacent to each other in the longitudinal direction are connected by connecting portions 33 . Since the depth of the slits 32 and the thickness of the connecting portions 33 are all the same, the dimension of the block portions 34 along the longitudinal direction of the base portion 31 and the dimension of the block portions 34 along the thickness direction are the same for all the block portions 34 is the same in Each of the block portions 34 can be compressed and deformed independently, and has a reaction force for restoring the original shape from the compressed state.

The longitudinal dimension of the first refractory member 30A is shorter than the longitudinal dimension of the second refractory member 30B. The longitudinal dimensions of the first fire-resistant member 30A and the second fire-resistant member 30B may be the same, or the first fire-resistant member 30A may be longer than the second fire-resistant member 30B. The number of slits 32 of the first fire-resistant member 30A is greater than the number of slits 32 of the second fire-resistant member 30B, and the number of block portions 34 of the first fire-resistant member 30A is greater than the number of block portions 34 of the second fire-resistant member 30B. many. The dimension of the block portion 34 along the longitudinal direction of the first fire resistant member 30A is smaller than the dimension of the block portion 34 along the longitudinal direction of the second fire resistant member 30B. Also, the thickness of the connecting portion 33 of the first fire-resistant member 30A is smaller than the thickness of the connecting portion 33 of the second fire-resistant member 30B.

As shown in FIG. 2(a) or FIG. 3(b), the sheet material 41 is adhered to the entire first surface 31a and the entire second surface 31b except for the slits 32. As shown in FIG. The sheet material 41 is made of nonwoven fabric. The frictional resistance on the surface of the sheet material 41 is smaller than the frictional resistance on the surface of the base 31 made of expanded chloroprene rubber. The sheet material 41 attached to the first surface 31 a is divided along the slits 32 . Therefore, the sheet material 41 is adhered independently to each block portion 34 . The slit 32 is formed by cutting the base portion 31 after a sheet material 41 having the same size as that of the first surface 31a of the base portion 31 is adhered to the first surface 31a. Therefore, the sheet material 41 is cut into sizes corresponding to the respective block portions 34 at the same time when the slits 32 are formed.

As shown in FIG. 4, the refractory member 30 can be cut by a manual cutting tool such as scissors, a cutter, or the like, both at locations with slits 32 and at locations without slits 32 . Then, when the fire-resistant member 30 is cut and subdivided, a gap fire-resistant member 35 is formed as a gap closing member. The gap fire-resistant member 35 has a smaller longitudinal dimension than the fire-resistant member 30 and has a rectangular parallelepiped shape. When constructing a fire prevention structure, there is a gap smaller than the longitudinal dimension of the first fireproof member 30A or the second fireproof member 30B between adjacent wiring/piping members 11 and between adjacent fireproof members 30. occurs. The refractory member 30 is cut so as to have a dimension slightly larger than the gap, and the refractory member 35 for the gap is manufactured.

As shown in FIG. 4 , when scissors 51 as a manual cutting tool are used to cut the refractory member 30 from a location where there is no slit 32 , blades 51 a of the scissors 51 come into contact with the refractory member 30 .
As shown in FIG. 3B, a sheet material 41 is attached to the entire first surface 31a and the second surface 31b including each long side edge 31c. Therefore, when the blades 51a of the scissors 51 are inserted into the block portion 34, the sheet material 41 suppresses the compressive deformation of the portion where the blades 51a are inserted, thereby facilitating cutting with the scissors 51. FIG.

Next, a method for forming the fire prevention structure will be described.
First, as shown in FIG. 5, a through hole Wa is formed in the fireproof partition wall W for the wiring/piping member 11 to pass through. Next, the wiring/piping material support rack 20 is arranged in the through hole Wa. Next, a plurality of wiring/piping members 11 are supported by the plurality of supporting members 20b of the wiring/piping member support rack 20, and the wiring/piping members 11 are passed through the fire partition W.

Next, as shown in FIG. 6 or 7 , a plurality of fireproof members 30 are accommodated between the inner surface of the through hole Wa and the outer surface of the wiring/piping member 11 . At this time, the fire-resistant member 30 is accommodated in the through hole Wa so that the longitudinal direction of the fire-resistant member 30 extends in the horizontal direction and the thickness direction thereof extends in the vertical direction. The left-right direction is the left-right direction when the fireproof partition wall W is viewed from the front, and coincides with the longitudinal direction of the through hole Wa. The first fireproof member 30A is used for the fireproof member 30 that contacts the outer surface of the wiring/piping member 11, and the second fireproof member 30B is used for the other fireproof member 30. FIG.

The base 31 of the first fire-resistant member 30A and the base 31 of the second fire-resistant member 30B are the same foamed chloroprene rubber. Even if the first fire-resistant member 30A and the second fire-resistant member 30B are made of the same material, the first fire-resistant member 30A and the second fire-resistant member 30B are selectively used depending on the thickness. The thinner the base portion 31 is, the easier it is to deform and the smaller the reaction force is.

Therefore, in order to make the base portion 31 easily follow the shape of the wiring/piping material 11, the first fireproof member 30A is used as the fireproof member 30 in contact with the outer surface of the wiring/piping material 11, and the inner surface side in the through hole Wa is used. That is, the second fire-resistant member 30B was used as the fire-resistant member 30 arranged outside the first fire-resistant member 30A. That is, in the through hole Wa, the fire resistant member 30 is selectively used so that the thickness of the fire resistant member 30 on the wiring/piping material 11 side becomes thin and the thickness of the fire resistant member 30 on the inner surface side of the through hole Wa becomes thick.

The second fireproof members 30B are stacked upward from the lower side of the through hole Wa. Also, the second fireproof members 30B are arranged in the horizontal direction of the through hole Wa. In the left-right direction, when a gap shorter than the dimension in the longitudinal direction of the second fireproof member 30B is formed, in FIG. The second fireproof member 30B is cut so as to be slightly longer to form the fireproof member 35 for the gap, and the fireproof member 35 for the gap is stuffed into the gap.

The second fireproof member 30B and the gap fireproof member 35 arranged side by side in the left-right direction are each compressed in the longitudinal direction, and a reaction force is generated to restore the original shape from the compressed state. Due to this reaction force, the laterally adjacent second fire-resistant members 30B and the gap fire-resistant member 35 and the elongated member 20a are brought into pressure contact with each other. Although not shown, when the second fireproof member 30B and the gap fireproof member 35 are adjacent to each other in the left-right direction, the second fireproof member 30B and the gap fireproof member 35 are pressed against each other. That is, the second fireproof members 30B and the gap fireproof members 35 arranged in the left-right direction are pressed against each other by utilizing the reaction force. In addition, in the cuboid-shaped fire-resistant member 35 for gaps, the direction in which the fire-resistant members 35 for gaps are stuffed is adjusted according to the reaction force to be generated. As with the base portion 31, the fire-resistant member 35 for gaps is more easily deformed and the reaction force is smaller as the thickness is thinner, and is less deformable and the reaction force is larger as the thickness is thicker. Therefore, the direction of the gap fireproof member 35 is selected according to the magnitude of the reaction force to be generated.

A first fire-resistant member 30A is used as the fire-resistant member 30 that contacts the outer surface of the wiring/piping member 11 . At this time, as shown in the enlarged view of FIG. 1, the sheet material 41 on the side of the first surface 31a of the first fireproof member 30A is brought into contact with the outer surface of the wiring/piping material 11. Then, as shown in FIG. Also, when stacking the second fire-resistant members 30B in the vertical direction, or when stacking the second fire-resistant members 30B on the first fire-resistant members 30A, the second fire-resistant members 30B adjacent to each other in the stacking direction and the first fire-resistant members 30A The second fireproof member 30B is joined with the double-sided tape T. In this embodiment, the outer surface of the wiring/piping member 11 faces the inner surface of the through hole Wa in the vertical direction, and the first fire-resistant member 30A and the second fire-resistant member 30B are stacked vertically. ing. Therefore, the vertical direction is the stacking direction.

Finally, in each row in the left-right direction, the fire-resistant member 30 is inserted between the first fire-resistant member 30A or the gap fire-resistant member 35 and the inner surface of the through hole Wa in the stacking direction uppermost stage. At this time, as shown by the two-dot chain line in FIG. 6, the vertical and horizontal dimensions of the gap formed at the uppermost layer in the stacking direction are smaller than the thickness and longitudinal dimensions of the second fire-resistant member 30B. For this reason, the second fire-resistant member 30B is packed into the gap while compressing the second fire-resistant member 30B in the thickness direction and the longitudinal direction. The second refractory member 30B to be packed last also generates a reaction force to return to the original shape from the compressed state after being packed into the gap. Due to this reaction force, the second fire-resistant member 30B and the gap fire-resistant member 35 adjacent in the stacking direction, the second fire-resistant member 30B adjacent in the left-right direction, and the inner surface of the through hole Wa are pressed against each other.

At this time, the second fireproof member 30B to be pushed in is not adhered with the double-faced tape T. In addition, the sheet material 41 reduces the friction generated between the second fire-resistant member 30B to be pushed in and the contacting second fire-resistant member 30B and the gap fire-resistant member 35, making it easier to pack the second fire-resistant member 30B into the gap.

When the second fire-resistant member 30B is packed into the gap in a compressed state, each of the vertically stacked fire-resistant members 30B is compressed in the thickness direction, and a reaction force tries to restore the original shape from the compressed state. occurs.

In addition, the gap fireproof member 35 is packed between the outer surface of the wiring/piping member 11 and the first fireproof member 30A. In the gap fire-resistant member 35, the direction in which the gap fire-resistant member 35 is stuffed is adjusted according to the reaction force to be generated. As with the base portion 31, the fire-resistant member 35 for gaps is more easily deformed and the reaction force is smaller as the thickness is thinner, and is less deformable and the reaction force is larger as the thickness is thicker. Therefore, the direction of the gap fireproof member 35 is selected according to the magnitude of the reaction force to be generated.

Then, the first fire-resistant member 30A is brought into pressure contact with the outer surface of the wiring/piping member 11 by utilizing the reaction force generated in all the first fire-resistant members 30A and the second fire-resistant members 30B stacked in the vertical direction. That is, the first fire-resistant members 30A, the second fire-resistant members 30B, the gap fire-resistant members 35 and the second fire-resistant members 30B, and the first fire-resistant members 30A and the second fire-resistant members 30B are pressed against each other. At this time, as described above, the first fire-resistant member 30A is used as the fire-resistant member 30 that contacts the outer surface of the wiring/piping member 11, and the first fire-resistant member 30 as the fire-resistant member 30 arranged outside the first fire resistant member 30A is used. 2 refractory members 30B are used.

Therefore, the first fire-resistant member 30A is pressed toward the wiring/piping member 11 by the second fire-resistant member 30B having a large reaction force, and not only the reaction force of the first fire-resistant member 30A but also the reaction force of the second fire-resistant member 30B is utilized. The first refractory member 30A is pressed against the wiring/piping member 11 by pressing. As a result, as shown in the enlarged view of FIG. 1, a reaction force F is generated in the first fire-resistant member 30A toward the wiring/piping member 11, and the first fire-resistant member 30A is directed toward the wiring/piping member 11. As a result, the first fireproof member 30A is pressed against the wiring/piping member 11 .

The reaction force F generated in the first fireproof member 30</b>A acts as a force that presses the first surface 31 a via the sheet material 41 against the outer surface of the wiring/piping material 11 . Then, each block portion 34 of the first fireproof member 30A is deformed according to the shape of the outer peripheral surface of the wiring/piping member 11 via the sheet member 41, respectively. The larger the diameter of the wiring/piping material 11, the greater the amount of compression in the thickness direction of the block portion 34 in contact with the wiring/piping material 11. The amount of compression in the thickness direction of the block portion 34 becomes small. In addition, although the diameter of the wiring/piping material 11 also differs along the left-right direction, each block part 34 is deformed while being compressed following the diameter of the wiring/piping material 11 along the longitudinal direction of the first fireproof member 30A. do.

Then, the first fireproof member 30A is pressed against the outer surface of the wiring/piping member 11 . By arranging the easily deformable first fireproof member 30A at a position where it is brought into contact with the wiring/piping member 11, a gap is less likely to be formed between the wiring/piping member 11 and the first fireproof member 30A. Also, the second fire-resistant member 30B having a large reaction force is arranged outside the first fire-resistant member 30A. That is, by selectively using the first fire-resistant member 30A and the second fire-resistant member 30B according to the thickness of the base portion 31, the fire-resistant member 30 is brought into pressure contact with the wiring/piping material 11 while suppressing the formation of gaps.

As a result, the space between the inner surface of the through hole Wa and the outer surface of the wiring/piping member 11 is closed by the first fire-resistant member 30A, the second fire-resistant member 30B, and the fire-resistant member 35 for gap without any gap. Also, the gap fireproof member 35, the second fireproof member 30B, or the first fireproof member 30A is pressed against the outer surface of the long member 20a in the wiring/piping material support rack 20. As shown in FIG. A fine gap that cannot be closed by the fireproof member 30 and the gap fireproof member 35 is filled with the fireproof putty P. As a result, the fireproof structure of the fireproof partition wall W is completed.

Next, the action of the fire protection structure of the fire protection compartment wall W will be described.
Now, in a building having a fireproof structure of the fireproof partition wall W, it is assumed that a fire or the like breaks out on the front side of one wall of the fireproof partition wall W, and the wiring/piping material 11 burns. At this time, it is the first fireproof member 30A that is pressed against the outer surface of the wiring/piping member 11 . Then, the heat generated from the wiring/piping material 11 does not cause the first fire-resistant member 30A to burn out immediately, and the first fire-resistant member 30A receives heat and expands. In addition, the second fire-resistant member 30B around the first fire-resistant member 30A and the gap fire-resistant member 35 also receive heat and expand.

Then, the first fire-resistant member 30A, the second fire-resistant member 30B, and the gap fire-resistant member 35 that have expanded seal and close the wiring/piping member 11 and the through hole Wa. In other words, the gap between the outer surface of the wiring/piping material 11 and the inner surface of the through hole Wa is prevented from becoming a path for flame, smoke, toxic gas, and heat, and the flame and the flame reach the other wall surface side of the fire partition wall W. Smoke, toxic gases and heat transfer are prevented.

According to the above embodiment, the following effects can be obtained.
(1) The base 31 of the refractory member 30 is made of foamed chloroprene rubber containing expanded graphite. Therefore, the refractory member 30 has a reaction force that tends to return to its original shape when compressed. Therefore, when the fire-resistant member 30 is packed in a compressed state between the inner surface of the through hole Wa and the outer surface of the wiring/piping member 11, the fire-resistant member 30 (first fire-resistant member 30A) in contact with the outer surface of the wiring/piping member 11 can be brought into pressure contact with the outer surface of the wiring/piping member 11 by its own reaction force and the reaction force of another laminated fireproof member 30 . More specifically, the fire-resistant members 30 can be brought into pressure contact with the wiring/piping material 11 by utilizing the reaction forces of all the fire-resistant members 30 that overlap in the stacking direction. Therefore, in order to press the fireproof members 30 against the wiring/piping material 11, it is not necessary to surround the fireproof members 30 with a band or sandwich the fireproof members 30 between two plates. That is, the fireproof member 30 can be brought into pressure contact with the wiring/piping member 11 simply by stuffing the fireproof member 30 between the inner surface of the through hole Wa and the outer surface of the wiring/piping member 11 without any gap. Therefore, the fireproof structure of the fireproof partition wall W can be simplified, and workability is facilitated.

(2) When constructing the fireproof structure of the fireproof partition wall W, if the fireproof member 30 is compressed and stuffed into the gap, the fireproof member 30 will return to its original shape. The base portion 31 is made of foamed chloroprene rubber and has a larger reaction force than a fireproof member including ceramic wool or rock wool.

(3) Since foamed chloroprene rubber is used as the foam, the base portion 31 can be formed into a spongy shape and can be easily compressed and deformed, and at the same time, a suitable reaction force can be exerted by rubber elasticity.
(4) The thickness of the fireproof member 30 (first fireproof member 30A) in contact with the outer surface of the wiring/piping member 11 is made thinner than the thickness of the fireproof member 30 (second fireproof member 30B) that does not come into contact with the wiring/piping member 11. As the thickness of the first fire-resistant member 30A becomes thinner, the base portion 31 is more likely to be deformed. It becomes difficult to form a gap between

In addition, the first fire-resistant member 30A, which is easily deformed by compression and has a small reaction force, is brought into contact with the outer peripheral surface of the wiring/piping member 11, and the second fire-resistant member 30B, which is not easily deformed by compression and has a large reaction force, is brought into contact with the first fire-resistant member. It was arranged outside 30A. As a result, the first fire-resistant member 30A having a small reaction force can be brought into strong pressure contact with the outer surface of the wiring/piping member 11 by using the second fire-resistant member 30B having a large reaction force. Therefore, by properly using the fireproof member 30 depending on the thickness, it is possible to construct a fireproof structure in which gaps are less likely to be formed and the fireproof member 30 is pressed against the wiring/piping member 11 .

(5) For example, as a fire-resistant member, there is a case in which a rock wool or ceramic wool block is covered with an exterior member formed of a heat-expandable heat-resistant material in the shape of a square box. In such a fireproof member, the corner portion of the exterior member has high rigidity and is less likely to deform following the outer surface of the wiring/piping member 11 . However, the fireproof member 30 of this embodiment is composed of a base portion 31 made of foamed chloroprene rubber and a sheet material 41 made of nonwoven fabric, and is flexible as a whole. For this reason, compressive deformation is not hindered at any portion of the fire-resistant member 30, especially at the corner portion, and the fire-resistant member 30 can be press-welded following the shape of the wiring/piping member 11. FIG.

(6) The base portion 31 is divided into respective block portions 34 along the slits 32 . Therefore, for example, compared with the case where the slit 32 is not formed in the base portion 31 , the base portion 31 is easily deformed to follow the shape of the wiring/piping member 11 .

(7) The sheet material 41 is attached to the first surface 31a and the second surface 31b of the base portion 31, and the frictional resistance of the surface of the sheet material 41 is smaller than the frictional resistance of the surface of the base portion 31. Therefore, compared to the case where the surface of the base portion 31 is exposed without the sheet material 41, the fire-resistant member 30 and the fire-resistant member 35 for the gap can be easily slid into the gap, and the fire-resistant member 30 and the fire-resistant member 35 for the gap can be easily slipped into the gap. It is easy to work to pack into. As a result, it is possible to improve the workability of the fire-resistant member 30 when constructing the fire prevention structure.

(8) The sheet material 41 is divided into blocks 34 along the slits 32 . For example, the deformation of each block portion 34 is prevented by the sheet material 41 as in the case where the sheet material 41 is not divided for each block portion 34 and one sheet material 41 is adhered to the entire first surface 31a. You can get rid of what you get. Therefore, each block part 34 becomes easy to deform|transform independently, and it becomes easy to make it follow the shape of the wiring / piping material 11, and to deform|transform it.

(9) The refractory members 30 adjacent to each other in the stacking direction were joined with a double-sided tape T. Therefore, when the fireproof member 30 is stuffed into the gap, it is possible to prevent the already installed fireproof member 30 from being displaced due to the pushing of the fireproof member 30 . In addition, after the construction of the fire prevention structure, the laminated state of the fireproof member 30 can be maintained by the double-sided tape T.

(10) The fireproof member 30 includes a base portion 31 and a sheet material 41 attached to the base portion 31. The base portion 31 is made of foamed chloroprene rubber and does not contain inorganic fibers such as rock wool or ceramic wool. Therefore, even if the fire-resistant member 30 is cut by hand or with scissors 51 to form the gap-use fire-resistant member 35, materials such as fibers do not scatter from the cut surface, thereby preventing material scattering. There is no need to apply a treatment to cover the cut surface.

Further, when the blade 51 a of the scissors 51 is inserted into the fire-resistant member 30 to cut the fire-resistant member 30 , the sheet material 41 can suppress the compressive deformation of the spongy base portion 31 . As a result, cutting of the base portion 31 is facilitated. Therefore, according to the refractory member 30, even if the refractory member 30 is cut, the material does not scatter from the cut surface, and the base 31 can be easily cut. The workability of the fireproof member 30 can be improved.

(11) The sheet material 41 is adhered to the entire first surface 31a and the entire second surface 31b of the base 31 excluding the slit 32, and the long side edge 31c into which the blade 51a of the scissors 51 enters. Existing. Therefore, even if the blades 51a of the scissors 51 are inserted in any position other than the slit 32, the sheet material 41 can suppress the compressive deformation of the base 31, and the base 31 can be easily cut.

(12) A plurality of slits 32 are provided in the base portion 31 of the fireproof member 30 , and the sheet material 41 is divided along the slits 32 . Therefore, it is not necessary to cut the sheet material 41 on the side of the first surface 31a, and the gap fireproof member 35 can be easily manufactured.

(13) The sheet material 41 is made of nonwoven fabric. A nonwoven fabric is formed without weaving discontinuous fibers (short fibers), and is softer than, for example, a fabric woven with continuous fibers. Therefore, even if the refractory member 30 has the sheet material 41, it is easily deformed by compression, and the work of filling the gap is easy. Further, the return from the compressed shape to the original shape is not hindered by the sheet material 41, and the reaction force of the fireproof member 30 and the gap fireproof member 35 itself allows the fireproof member 30 to be pressed against the wiring/piping member 11. can.

(14) In the refractory member 30, the slits 32 are provided at equal intervals in the longitudinal direction of the base 31, and the slits 32 are parallel to each other. Therefore, the plurality of block portions 34 partitioned by the base portion 31 can all have the same size. Therefore, the block portions 34 that are difficult to compress and the block portions 34 that are easy to compress due to the difference in size do not occur, and each block portion 34 can be deformed to follow the wiring/piping material 11 .

(15) The depth of the slit 32 is greater than the dimension of the connecting portion 33 along the thickness direction of the base portion 31 . That is, the dimension of the connecting portion 33 is smaller than the depth of the slit 32 . For this reason, the connecting portion 33 can be easily cut with a human hand and the scissors 51 .

(16) By forming the fire-resistant member 35 for gaps into a rectangular parallelepiped shape, the thickness along the long sides of the fire-resistant member 35 for gaps and the thickness along the short sides are different, and the reaction force generated according to the thickness is also different. different. By selecting the direction in which the fire-resistant members 35 for gaps are stuffed, it is possible to generate a reaction force in the fire-resistant members 35 for gaps according to the place where the fire-resistant members 35 are stuffed.

Note that the above embodiment may be modified as follows.
○ In the embodiment, all the blocking members accommodated in the through holes Wa are the fireproof members 30, but the blocking member that contacts the outer surface of the wiring/piping member 11 is the fireproof member 30 (preferably the first fireproof member 30A), Others may be closed members that do not have thermal expansion performance.

The non-thermally expandable closure member has a flat base made of foam. Since the base is a foam, it has a reaction force to return to the original shape when compressed in the thickness direction. The base is obtained from a matrix material in which a polymer is used as a matrix and an inorganic additive is added together with a foaming agent. Examples of inorganic additives added to foams include calcium carbonate and magnesium hydroxide.

Then, the fireproof member 30 and the blocking member are accommodated in the through hole Wa in a state in which a plurality of the fireproof member 30 and the blocking member are laminated in the facing direction of the outer surface of the wiring/piping member 11 and the inner surface of the through hole Wa. . At this time, the fireproof member 30 and the closing member are accommodated between the outer surface of the wiring/piping member 11 and the inner surface of the through hole Wa while being compressed in the thickness direction. Then, the fireproof member 30 in contact with the outer surface of the wiring/piping member 11 is pressure-welded to the outer surface of the wiring/piping member 11 by the reaction force of the fireproof member 30 itself and the reaction force of the other layered blocking member (foam). is doing.

When configured in this way, in order to press the fireproof member 30 against the wiring/piping material 11, the fireproof member 30 and the closing member are surrounded by a band, or the fireproof member 30 in contact with the wiring/piping material 11 is surrounded by two plates. There is no need to sandwich the That is, the fireproof member 30 can be brought into pressure contact with the wiring/piping member 11 simply by stuffing the fireproof member 30 and the closing member between the inner surface of the through hole Wa and the outer surface of the wiring/piping member 11 without any gap. Therefore, the fireproof structure of the fireproof partition wall W can be simplified, and workability is facilitated.

In the event of a fire, the closure member maintains its shape due to the inorganic additive. Also, the gaps caused by the burning of the wiring/piping material 11 are closed by the expansion of the fireproof member 30 . At this time, since the fireproof member 30 is in contact with the outer surface of the wiring/piping member 11, the fireproof member 30 expands due to the heat of the wiring/piping member 11, and the gap can be quickly closed.

A flame-retardant additive that imparts flame-retardant performance to the closing member may be added.
Alternatively, only the blocking member that contacts the outer surface of the wiring/piping member 11 may be used as the fireproof member 30 , and a part of the blocking member that does not contact the outer surface of the wiring/piping member 11 may be the fireproof member 30 .

Furthermore, a closing member made by foaming a base material to which an inorganic additive is added and a fireproof member 30 having thermal expansion performance are laminated in advance and integrated. The outer surface of the material 11 and the inner surface of the through hole Wa may be accommodated in the through hole Wa so as to match the facing direction.

Note that the closing member that does not have thermal expansion performance may be the same as the fireproof member 30 except that the material of the base is different. It may be provided in the same manner.

Alternatively, a closing member obtained by cutting a closing member having no thermal expansion performance from the slit 32 or a portion other than the slit 32 may be stuffed into the gap as a gap closing member.
○ In the embodiment, the refractory members 30 are integrated in a state of being laminated in advance, and the lamination direction is aligned with the facing direction of the outer surface of the wiring/piping member 11 and the inner surface of the through hole Wa. It may be accommodated in the hole Wa.

○ In the embodiment, all of the blocking members housed in the through holes Wa are the fireproof members 30, but among the plurality of blocking members housed in the through holes Wa, only a portion of the blocking members that do not come in contact with the outer surface of the wiring/piping material 11 The member may be a fireproof member 30 which is a closing member having thermal expansion performance.

◯ As shown in FIG. In this case, the base portion 31 is formed with a slit 32 extending in the thickness direction from the first surface 31 a and a connecting portion 33 is formed on the second surface 31 b side of the slit 32 . The dimension (depth) of the slit 32 along the thickness direction of the refractory member 30 is larger than the thickness of the connecting portion 33 . Therefore, as shown in FIG. 9, the connecting portion 33 of the fireproof member 30 can be easily cut by hand. When one block portion 34 separated by the slit 32 is to be used as the gap fireproof member 35, the connecting portion 33 is cut.

○ As shown in FIG. 10, the fire-resistant member 30 is composed of a plurality of block-shaped bases 31 and a sheet material 41 adhered to each base 31 so as to integrate the plurality of bases 31 in a row. , may consist of In this case, the sheet material 41 is attached only to one surface of each base portion 31 . Instead of the sheet material 41 made of non-woven fabric, a base member made of a hard material such as a resin plate and having a lower flexibility than the sheet material 41 is adhered to a plurality of bases 31 to form a fireproof member. may be In this case, the base member can be broken and cut by human hands and a manual cutting tool such as scissors 51 .

When configured in this way, the fireproof member 30 is divided into a plurality of bases 31 in advance, so when using the bases 31 as the gap fireproof member 35, it is sufficient to cut the sheet material 41 or the base member. The gap fireproof member 35 can be easily formed.

O As shown in FIG. 11, the sheet material 41 may be adhered along one long side edge 31c of the first surface 31a and the second surface 31b of the base 31 . With this configuration, when the blade 51 a of the scissors 51 is inserted into the refractory member 30 , the blade 51 a first enters the long side edge 31 c of the base 31 . Therefore, even if the sheet material 41 is adhered only to the long side edge 31c, the sheet material 41 suppresses compressive deformation of the portion where the blade 51a is inserted, thereby facilitating cutting.

○ As shown in FIG. 12, a tubular member 50 is fixed to the outer surface of the fireproof partition wall W along the periphery of the through hole Wa of the fireproof partition wall W, and the space surrounded by the tubular member 50 and the through hole Wa are It is good also as the through-hole 50a provided in the fire prevention partition wall W including. Regarding the fireproof structure of the fireproof partition wall W, the inner surface of the cylindrical member 50 is used as the inner surface of the through hole 50a, and the fireproof member 30 is accommodated between the inner surface of the through hole 50a and the outer surface of the wiring/piping material 11. may be formed by The fireproof member 30 may be housed only within the tubular member 50 or may be housed across the tubular member 50 and the fireproof partition wall W.

○ In the embodiment, the fire-resistant members 30 are stacked in the vertical direction, which is the facing direction, to stack a plurality of fire-resistant members 30. However, as shown in FIG. When the facing direction is the left-right direction, a plurality of fire-resistant members 30 may be accommodated so that the thickness direction of the fire-resistant members 30 coincides with the left-right direction, and the left-right direction may be the stacking direction of the fire-resistant members 30 . In this case, the sheet material 41 is preferably a double-sided tape, and the sheet material 41 joins the base portions 31 adjacent to each other in the left-right direction (stacking direction).

The fireproof structure of the fireproof partition wall W may be constructed by laminating all the fireproof members 30 in the horizontal direction.
○ In the embodiment, the fire-resistant member 30 is selectively used according to the reaction force based on the thickness of the base 31 and the ease of deformation. You may use fireproof member 30 properly.

O The sheet material 41 may be made of a material other than the non-woven fabric as long as the frictional resistance of the surface of the sheet material 41 is lower than the frictional resistance of the surface of the base portion 31 . For example, the sheet material 41 may be formed of a woven fabric, a knitted fabric, or a resin sheet.

O In the embodiment, the fire-resistant members 30 adjacent to each other in the stacking direction are joined with the double-sided tape T, but the joining with the double-sided tape T may be omitted.
○ In the embodiment, the fireproof members 30 adjacent to each other in the stacking direction are joined by the double-sided tape T, but the fireproof members 30 adjacent to each other in the stacking direction may be joined by a method other than the double-sided tape P, such as an adhesive. .

O The sheet material 41 attached to the first surface 31 a of the base 31 may be attached to the entire first surface 31 a so as to cover the slit 32 without being divided along the slit 32 . With this configuration, even if the sheet material 41 is stuck so as to cover the slit 32 , the slit 32 can be used as a place to insert the blade 51 a of the scissors 51 when cutting the sheet material 41 . Further, the sheet material 41 is not cut before construction, but may be cut along the slits 32 during construction to form the same aspect as the fire-resistant member 30 of the embodiment.

Further, the sheet material 41 of the first fire-resistant member 30A that contacts the wiring/piping material 11 is divided along the slit 32, and the sheet material 41 of the second fire-resistant member 30B that does not contact the wiring/piping material 11 is divided. It doesn't have to be.

O The refractory member 30 and the closing member may be composed of only the base portion 31 and the sheet member 41 may be omitted.
(circle) the sheet|seat material 41 may be stuck only on the 2nd surface 31b of the base 31, and may be stuck only on the 1st surface 31a.

(circle) although 30 A of 1st fireproof members and the 2nd fireproof member 30B were used together in embodiment, it is good also considering the thickness of the fireproof member 30 as only one type.
O The slit 32 of the refractory member 30 and the closing member may be omitted. Even in this case, the base portion 31 is deformed following the shape of the outer surface of the wiring/piping member 11, and is pressed against the outer surface of the wiring/piping member 11 by the reaction force.

O The number of slits 32 of the refractory member 30 and the closing member may be changed as appropriate.
O The slits 32 of the refractory member 30 and the closing member may not be formed at regular intervals in the longitudinal direction.

O The depths of the plurality of slits 32 of the refractory member 30 and the closing member are not all the same and may be different.
o The depth of the slit 32 may be less than half the thickness of the base 31 .

O The slits 32 of the refractory member 30 and the closing member may have shapes other than those extending in the lateral direction of the base portion 31 . For example, the slit 32 may extend in the longitudinal direction of the base 31, or may have a cross shape extending in the lateral direction and the longitudinal direction.

(circle) you may set three or more types of thickness of the fireproof member 30 and a closure member. Even in this case, it is preferable to minimize the thickness of the refractory member 30 and the blocking member that are in contact with the outer peripheral surface of the wiring/piping member 11 .

○ The fireproof member 30 and the closing member do not have the slit 32 before construction, and the slit 32 may be formed in the base 31 by simultaneously cutting the sheet material 41 and the base 31 during construction.

O The refractory member 30 and the closing member do not have to be rectangular flat plates. For example, the refractory member 30 and the closing member may have a flat plate shape in which the first surface 31a and the second surface 31b are square, or a flat plate shape in which the first surface 31a and the second surface 31b are oblong. may be

○ The through hole Wa of the fireproof partition W may be circular or elliptical instead of rectangular.
Technical ideas that can be grasped from the above embodiment and modifications will be described.

○ A fire prevention structure for a fire prevention partition wall in which a long penetrating member is inserted through a through hole provided in the fire prevention partition wall, wherein between the outer surface of the penetrating member and the inner surface of the through hole, A closing member having a base made of a foam and having a reaction force to restore the original shape when the base is compressed surrounds the penetrating member, and the outer surface of the penetrating member and the inner surface of the through hole. The blocking member, which is housed in a state of being stacked in a facing direction and is in contact with the outer surface of the penetrating member, is pressed against the outer surface of the penetrating member by its own reaction force and the reaction force of other laminated blocking members. and wherein at least one blocking member among the plurality of stacked blocking members has thermal expansion performance.

W...Fireproof partition wall Wa, 50a...Through hole 11...Wiring/piping material as penetrating member 30...Fireproof member as closing member having thermal expansion performance 31...Base part 32...Slit 34...Block part , 35... fireproof members for gaps, 41... sheet material.

Claims (7)

A fire prevention measure structure for a fire prevention partition wall in which a long penetrating member is inserted into a through hole provided in the fire prevention partition wall,
Between the outer surface of the penetrating member and the inner surface of the through hole, a plate-shaped base made of foam and at least one of the surfaces positioned at both ends in the thickness direction of the base are attached. and a sheet material having a surface frictional resistance smaller than that of the surface of the base, and a plurality of closing members provided with a reaction force to return to the original shape when the base is compressed, the penetrating member. Enclosed and housed in a state of being stacked in a plurality of rows in each of a plurality of rows extending in a facing direction between the outer surface of the penetrating member and the inner surface of the through hole,
Each of the plurality of closing members is compressed in the thickness direction in the state in which the plurality of layers are stacked in the facing direction,
the closing member in contact with the outer surface of the penetrating member is pressed against the outer surface of the penetrating member by its own reaction force and the reaction force of another laminated closing member;
At least one blocking member among the plurality of stacked blocking members has thermal expansion performance. 2. The fire prevention structure for a fire protection partition wall according to claim 1, wherein said at least one closing member having thermal expansion performance is a closing member that contacts an outer surface of said penetrating member. 3. The fire prevention structure for a fire protection partition wall according to claim 1, wherein all closing members accommodated between the outer surface of said through member and the inner surface of said through hole have thermal expansion performance. Among the plurality of blocking members accommodated between the outer surface of the penetrating member and the inner surface of the through hole, at least the blocking member in contact with the outer surface of the penetrating member is A fire prevention measure for a fire prevention partition wall according to any one of claims 1 to 3, comprising a plurality of slits extending in the thickness direction, and having a plurality of block portions formed by dividing the base portion by the slits. structure. 5. The fire prevention structure for a fire prevention partition wall according to claim 4 , wherein the sheet material is independently adhered to each of the block portions. 2. A clearance closing member obtained by cutting said closing member and subdividing said closing member is accommodated in a clearance formed between the outer surface of said penetrating member and the inner surface of said through hole and which is smaller than said closing member. The fire prevention structure for the fire prevention partition wall according to any one of claims 1 to 5 . The fire prevention structure for fire prevention partition walls according to any one of claims 1 to 6 , wherein the blocking members adjacent to each other in the stacking direction are joined together.

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