JP7017388B2 - Fire protection structure of fire protection compartment wall - Google Patents

Description

The present invention relates to a fire protection structure of a fire protection compartment wall in which a long penetrating member is inserted through a through hole provided in the fire protection compartment wall.

Conventionally, a through hole has been formed in the fireproof partition wall in order to allow wiring / piping material as a long penetrating member to penetrate the fireproof partition wall in a building. A fire protection structure is provided on such a fire protection compartment wall. The fire protection structure of the fire protection compartment wall, for example, prevents flame, smoke, and toxic gas from flowing into the other side through the through hole when a fire or the like occurs on the front side of one wall sandwiching the fire protection compartment wall. It is provided to do. The fire protection structure is designed to prevent the inflow of flame, smoke, and toxic gas to the side opposite to the fire occurrence side by closing the through hole in the event of a fire or the like.

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

The inorganic fiber imparts nonflammability or flame retardancy to the inorganic fiber mat, and examples of the inorganic fiber include rock wool and ceramic fiber. Then, 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, compression deformation is effectively generated at the contact end of each divided piece, and the gap between the inorganic fiber mat and the wiring / piping material is eliminated. As a result, the space around the wiring / piping material is blocked while maintaining sufficient fire protection performance.

Japanese Unexamined Patent Publication No. 2002-271948

However, in the fireproof 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 provided by a pressurizing device separately provided from the inorganic fiber mat. You need to keep applying pressure to the mat.

An object of the present invention is to provide a fire protection structure for a fire protection partition wall capable of pressing a closing member against an outer surface of a penetrating member without using a pressurizing device.

The fire protection structure of the fire protection compartment wall for solving the above problems is a fire protection construction structure of the fire protection compartment wall in which a long penetrating member is inserted into a through hole provided in the fire protection compartment wall. A base made of foam is provided between the outer surface of the member and the inner surface of the through hole, and a closing member having a reaction force that tends to return to the original shape when the base is compressed surrounds the through member. At the same time, the closing member, which is accommodated in a state of being laminated in a state where a plurality of the outer surface of the through member and the inner surface of the through hole are laminated in the facing direction, and the closing member in contact with the outer surface of the through member, has its own reaction force and other laminated members. The gist is that at least one of the plurality of laminated closing members is in pressure contact with the outer surface of the penetrating member by the reaction force of the closing member, and has thermal expansion performance.

Further, regarding the fire protection structure of the fire protection partition wall, it is preferable that at least one closing member having the thermal expansion performance is a closing member in contact with the outer surface of the penetrating member.
Further, regarding the fire protection structure of the fire protection partition wall, all the 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, regarding the fire protection structure of the fire protection 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. It may have a plurality of slits extending in the thickness direction from the surface of the closing member in contact with the penetrating member, and may have a plurality of block portions formed by dividing the base portion by the slits.

Further, regarding the fire protection structure of the fire protection 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 is provided on the surface of the sheet material. The frictional resistance is smaller than the frictional resistance on the surface of the base.

Further, regarding the fire protection structure of the fire protection partition wall, the sheet material may be independently attached to each of the block portions.
Further, the fire protection structure of the fire protection partition wall was subdivided by cutting the closing member into a gap 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, regarding the fire protection structure of the fire protection partition wall, the closing members adjacent to each other in the stacking direction may be joined to each other.

According to the present invention, the closing member can be pressed against the penetrating member without using a pressurizing device.

The front view which shows the fire protection measure structure in the fire protection partition wall of embodiment. (A) is a perspective view showing a refractory member, and (b) is an exploded perspective view showing a refractory member. (A) is a partial front view showing a refractory member, and (b) is a partial front view showing a state in which the refractory member is cut with scissors. The perspective view which shows the state which cut the refractory member and formed the refractory member for a gap. A perspective view showing a state in which the wiring / piping material is supported by the wiring / piping material support rack. A front view showing a state in which refractory members are stacked so as to surround wiring and piping materials. The perspective view which shows the state which the refractory member is packed in the gap. The perspective view which shows the refractory member of another example. A perspective view showing a state in which the base is cut by hand. The perspective view which shows the refractory member of another example. The perspective view which shows the refractory member which a sheet material was attached only to the long side edge of a base. The perspective view which shows another example of a through hole. The front view which shows another example of how to accommodate a refractory member.

Hereinafter, an embodiment embodying the fire protection structure of the fire protection compartment wall will be described with reference to FIGS. 1 to 8.
As shown in FIG. 1 or FIG. 5, the concrete fireproof partition wall W 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 materials 11 are inserted into the through hole Wa as a through member. The wiring / piping material 11 is a general term for wiring (control cable, coaxial cable, optical cable, etc.) and piping material (synthetic resin flexible conduit, steel conduit, etc.) arranged in the building. That is. The wiring / piping material 11 has a long shape. In the present embodiment, wiring / piping materials 11 having different diameters are inserted through the through holes Wa.

The wiring / piping material 11 is supported from below by the wiring / piping material 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 bridged to the pair of long members 20a. The wiring / piping material support rack 20 is arranged 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 fireproof partition wall W in the thickness direction. The wiring / piping material 11 is supported by the plurality of support members 20b.

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

As shown in FIGS. 2A, 2B or 3A, the refractory member 30 for constructing the fire protection structure is a rectangular flat plate-shaped base 31 and a sheet material attached to the base 31. 41 and. Of the six sides of the base 31, one of the two largest rectangular faces is the first face 31a and the other is the second face 31b. The direction in which the straight line L connecting the first surface 31a and the second surface 31b extends is defined as the thickness direction of the base 31. The first surface 31a and the second surface 31b are surfaces located at both ends of the base 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 refractory members 30 having different thicknesses, and in some cases, the refractory member 30 having a thin thickness is described as the first refractory member 30A, and the refractory member 30 is thicker than the first refractory member 30A. 30 is referred to as a second refractory member 30B.

As shown in FIG. 2A or FIG. 2B, the direction along the first surface 31a and the second surface 31b of the base 31 and orthogonal to the longitudinal direction is defined as the lateral direction. The thickness direction, the longitudinal direction, and the lateral direction of the base 31 coincide with the thickness direction, the longitudinal direction, and the lateral direction of the refractory member 30. On the first surface 31a and the second surface 31b, the pair of side edges extending in the longitudinal direction is referred to as the long side edge 31c, and the pair of side edges extending in the lateral direction is referred to as the short side edge 31d.

The base 31 is made of a foam having thermal expansion performance, and specifically, the base 31 is made of a foam in which the thermal expansion material is uniformly dispersed in the base material. Such a base 31 is obtained by foaming only the foaming agent in the base material in which the heat expansion material and the foaming agent are kneaded into the base material. In the present embodiment, expanded graphite is used as the thermal expansion material, a 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 rubber includes ethylenepropylene diene rubber (EPDM), natural rubber (NR), synthetic natural rubber (IR), isoprene rubber, butadiene rubber (BR), styrene butadiene rubber (SBR), and the like. Examples thereof include butyl rubber (IIR) and nitrile rubber (NBR).

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

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

The base 31 is sponge-like having a large number of fine bubbles formed by foaming the foaming agent, and a large number of bubbles are present inside and on the surface of the base 31. Further, the base 31 has rubber elasticity due to the foamed chloroprene rubber.

As shown by the two-dot chain line in FIG. 3A, the base portion 31 can be compressed and deformed in the thickness direction, and although not shown, it can also be compressed and deformed in the longitudinal direction and the lateral direction. The base 31 has a reaction force that tries to return to the original shape from the compressed state. Here, for example, if a ceramic wool or a closing member based on rock wool is taken as a comparative example, the reaction force of the ceramic wool or the closing member based on rock wool is almost nonexistent, and when compressed, It remains almost in its compressed shape. On the other hand, the base 31 of the present embodiment has a very large reaction force and tends to immediately return to its original shape even when compressed.

Since the above-mentioned base 31 contains expanded graphite, its volume expands several times or more before heating when it receives heat of a predetermined temperature (for example, 250 ° C.) or higher. Therefore, the base 31 is made compressible and deformable by the foamed chloroprene rubber, and is thermally expandable by the expanded graphite.

As shown in FIGS. 2 (a), 2 (b) or 3 (a), the refractory member 30 includes a plurality of slits 32 in the base 31. The slit 32 extends in the thickness direction from the first surface 31a of the base portion 31. The slits 32 extend over the entire lateral direction so as to connect the pair of long side edges 31c of the first surface 31a to each other, and are present at equal intervals in the longitudinal direction of the base 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 slit 32 along the thickness direction of the base 31 is the depth, the depth is the same in all the slits 32. Further, the slit 32 does not reach the second surface 31b of the base portion 31.

The base portion 31 is provided with a connecting portion 33 at a portion closer to the second surface 31b than the slit 32. Since the depths of all the slits 32 are the same, the dimensions of the connecting portion 33 along the thickness direction of the base 31 are also the same. The connecting portion 33 extends over the entire lateral direction so as to connect the pair of long side edges 31c of the first surface 31a to each other. 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 a human 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 exist at equal intervals in the longitudinal direction of the base portion 31, and the block portions 34 adjacent to each other in the longitudinal direction are connected by the connecting portion 33. Since the depth of the slit 32 and the thickness of the connecting portion 33 are all the same, the dimensions of the block portion 34 along the longitudinal direction of the base 31 and the dimensions of the block portion 34 along the thickness direction are all the block portions 34. Is the same. Each of the block portions 34 can be compressed and deformed independently, and has a reaction force for returning from the compressed state to the original shape.

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

As shown in FIG. 2A or FIG. 3B, the sheet material 41 is attached to the entire first surface 31a and the entire second surface 31b excluding the slit 32. The sheet material 41 is made of non-woven 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 foamed chloroprene rubber. The sheet material 41 attached to the first surface 31a is divided along the slit 32. Therefore, the sheet material 41 is independently attached to each block portion 34. The slit 32 is formed by attaching a sheet material 41 having the same size as the first surface 31a of the base 31 to the first surface 31a and then making a notch in the base 31. Therefore, at the same time as forming the slit 32, the sheet material 41 is cut to a size corresponding to each block portion 34.

As shown in FIG. 4, the refractory member 30 can be cut from either a portion having a slit 32 or a portion without a slit 32 by a manual cutting tool such as scissors or a cutter. Then, when the refractory member 30 is cut and subdivided, the refractory member 35 for a gap is formed as a closing member for the gap. The refractory member 35 for a gap has a smaller length in the longitudinal direction than the refractory member 30, and has a rectangular parallelepiped shape. When constructing a fire protection structure, there is a gap smaller than the longitudinal dimension of the first fire resistance member 30A and the second fire resistance member 30B between adjacent wiring / piping materials 11 and between adjacent fire resistance members 30. Occurs. The refractory member 30 is cut so as to have a size slightly larger than this gap, and the refractory member 35 for the gap is manufactured.

As shown in FIG. 4, when the refractory member 30 is cut with the scissors 51 as a manual cutting tool from a portion without the slit 32, the blade 51a of the scissors 51 comes into contact with the refractory member 30.
As shown in FIG. 3B, a sheet material 41 is attached to the first surface 31a and the second surface 31b as a whole including each long side edge 31c. Therefore, when the blade 51a of the scissors 51 is inserted into the block portion 34, the sheet material 41 suppresses the compression deformation of the portion where the blade 51a is inserted, and the scissors 51 facilitates cutting.

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

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

The base 31 of the first refractory member 30A and the base 31 of the second refractory member 30B are the same foamed chloroprene rubber. Even if the first refractory member 30A and the second refractory member 30B are made of the same material, the first refractory member 30A and the second refractory member 30B are used properly according to the thickness. The thinner the thickness of the base 31, the more easily it is deformed and the smaller the reaction force, and the thicker the base portion 31, the less easily it is deformed and the larger the reaction force.

Therefore, in order to make it easier for the base 31 to follow the shape of the wiring / piping material 11, the first refractory member 30A is used as the refractory 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 refractory member 30B was used as the refractory member 30 disposed outside the first refractory member 30A. That is, in the through hole Wa, the refractory member 30 is used properly so that the thickness of the refractory member 30 on the wiring / piping material 11 side becomes thin and the thickness of the refractory member 30 on the inner surface side of the through hole Wa becomes thick.

The second refractory member 30B is stacked from the lower side to the upper side of the through hole Wa. Further, the second refractory members 30B are arranged in the left-right direction of the through hole Wa. When a gap shorter than the dimension in the longitudinal direction of the second refractory member 30B is formed in the left-right direction, in FIG. 6, the dimension of the gap between the long member 20a and the inner surface of the through hole Wa The second fireproof member 30B is cut so as to be slightly longer to form the gap fireproof member 35, and the gap fireproof member 35 is packed in the gap.

The second refractory member 30B and the refractory member 35 for a gap, which are juxtaposed in the left-right direction, are each compressed in the longitudinal direction, and a reaction force is generated to restore the compressed state to the original shape. Due to this reaction force, the second fireproof members 30B adjacent to each other in the left-right direction, and the gap fireproof member 35 and the long member 20a are pressed against 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 in pressure contact with each other. That is, the reaction forces of the second refractory members 30B and the refractory members 35 for gaps arranged in the left-right direction are used to bring them into pressure contact with each other. In the rectangular parallelepiped refractory member 35 for gaps, the direction in which the refractory member 35 for gaps is packed is adjusted according to the reaction force to be generated. Similar to the base 31, the gap refractory member 35 is more likely to be deformed as the thickness is thinner, and the reaction force is smaller, and the thicker the thickness is, the more difficult it is to be deformed and the reaction force is larger. Therefore, the orientation of the refractory member 35 for the gap is selected according to the magnitude of the reaction force to be generated.

The first refractory member 30A is used for the refractory member 30 that comes into contact with the outer surface of the wiring / piping material 11. At this time, as shown in the enlarged view of FIG. 1, the sheet material 41 on the first surface 31a side of the first refractory member 30A is brought into contact with the outer surface of the wiring / piping material 11. Further, when the second refractory member 30B is stacked in the vertical direction, or when the second refractory member 30B is stacked on the first refractory member 30A, the second refractory members 30B adjacent to each other in the stacking direction and the first refractory member 30A The second refractory member 30B is joined to each other by the double-sided tape T. In the present embodiment, the facing direction between the outer surface of the wiring / piping material 11 and the inner surface of the through hole Wa is a vertical direction, and a plurality of the first refractory member 30A and the second refractory member 30B are laminated in the vertical direction. 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 at the uppermost stage in the stacking direction and the inner surface of the through hole Wa. 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 stage in the stacking direction are smaller than the thickness and the longitudinal dimension of the second refractory member 30B. Therefore, the second refractory member 30B is packed in the gap while compressing the second refractory member 30B in the thickness direction and the longitudinal direction. After the second refractory member 30B to be packed at the end is also packed in the gap, a reaction force that tries to return to the original shape from the compressed state is generated. Due to this reaction force, the second refractory member 30B adjacent to each other in the stacking direction and the refractory member 35 for a gap, the second refractory member 30B adjacent to each other in the left-right direction, and the second refractory member 30B come into pressure contact with the inner surface of the through hole Wa.

At this time, the second refractory member 30B to be pushed in is not attached with the double-sided tape T. Further, in the second refractory member 30B to be pushed in, the friction generated between the second refractory member 30B and the gap refractory member 35 that come into contact with each other is reduced by the sheet material 41, and the second refractory member 30B can be easily packed in the gap.

Then, when the second refractory member 30B is packed in the gap in the compressed state, each of the refractory members 30 stacked in the vertical direction is compressed in the thickness direction and the reaction force that tries to return to the original shape from the compressed state. Occurs.

Further, the refractory member 35 for a gap is packed between the outer surface of the wiring / piping material 11 and the first refractory member 30A. In the gap fireproof member 35, the direction in which the gap fireproof member 35 is packed is adjusted according to the reaction force to be generated. Similar to the base 31, the gap refractory member 35 is more likely to be deformed as the thickness is thinner, and the reaction force is smaller, and the thicker the thickness is, the more difficult it is to be deformed and the reaction force is larger. Therefore, the orientation of the refractory member 35 for the gap is selected according to the magnitude of the reaction force to be generated.

Then, the first refractory member 30A is pressed against the outer surface of the wiring / piping material 11 by utilizing the reaction force generated in all the first refractory members 30A and the second refractory members 30B laminated in the vertical direction. That is, the first refractory members 30A adjacent to each other in the stacking direction, the second refractory members 30B, the gap refractory members 35 and the second refractory member 30B, and the first refractory member 30A and the second refractory member 30B are pressed against each other. At this time, as described above, the first refractory member 30A is used as the refractory member 30 in contact with the outer surface of the wiring / piping material 11, and the refractory member 30 is arranged outside the first refractory member 30A. 2 The refractory member 30B is used.

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

The reaction force F generated in the first refractory member 30A acts as a force for pressing the first surface 31a via the sheet material 41 against the outer surface of the wiring / piping material 11. Then, each block portion 34 of the first refractory member 30A is deformed according to the shape of the outer peripheral surface of the wiring / piping material 11 via the sheet material 41, respectively. The larger the diameter of the wiring / piping material 11, the larger the amount of compression in the thickness direction of the block portion 34 in contact with the wiring / piping material 11, and the smaller the diameter of the wiring / piping material 11, the larger the contact with the wiring / piping material 11. The amount of compression of the block portion 34 in the thickness direction becomes smaller. Further, although the diameter of the wiring / piping material 11 is different along the left-right direction, each block portion 34 is deformed while being compressed along the longitudinal direction of the first fireproof member 30A along the diameter of the wiring / piping material 11. do.

Then, the first refractory member 30A is pressed against the outer surface of the wiring / piping material 11. By arranging the easily deformable first fireproof member 30A at a position where it comes into contact with the wiring / piping material 11, it is difficult to form a gap between the wiring / piping material 11 and the first fireproof member 30A. Further, the second refractory member 30B having a large reaction force is arranged outside the first refractory member 30A. That is, by properly using the first refractory member 30A and the second refractory member 30B according to the thickness of the base 31, the refractory member 30 is pressed against the wiring / piping material 11 and the formation of a gap is suppressed.

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

Next, the operation of the fire protection measure structure of the fire protection partition wall W will be described.
Now, it is assumed that in a building having a fire protection structure of the fire protection partition wall W, a fire or the like occurs on the front side of one of the fire protection compartment walls W, and the wiring / piping material 11 burns. At this time, it is the first refractory member 30A that is in pressure contact with the outer surface of the wiring / piping material 11. Then, the first refractory member 30A is not immediately burned down by the heat generated from the wiring / piping material 11, and the first refractory member 30A receives the heat and expands. Further, the second refractory member 30B and the gap refractory member 35 around the first refractory member 30A also receive heat and expand.

Then, the expanded first refractory member 30A, the second refractory member 30B, and the gap refractory member 35 seal and close the space between the wiring / piping material 11 and the through hole Wa. That is, it is prevented that the gap between the outer surface of the wiring / piping material 11 and the inner surface of the through hole Wa becomes a path for flame, smoke, toxic gas, and heat, and the flame is directed to the other wall surface side of the fire protection partition wall W. Prevents the transfer of smoke, toxic gas and heat.

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 refractory member 30 is packed between the inner surface of the through hole Wa and the outer surface of the wiring / piping material 11 in a compressed state, the refractory member 30 (first fireproof member 30A) in contact with the outer surface of the wiring / piping material 11 Can be pressed against the outer surface of the wiring / piping material 11 by its own reaction force and the reaction force of the other laminated refractory members 30. More specifically, the refractory member 30 can be pressed against the wiring / piping material 11 by utilizing the reaction force of all the refractory members 30 overlapping in the stacking direction. Therefore, in order to bring the refractory member 30 into pressure contact with the wiring / piping material 11, it is not necessary to surround the plurality of refractory members 30 with a band or to sandwich the refractory member 30 with two plate materials. That is, the refractory member 30 can be pressed against the wiring / piping material 11 simply by packing the refractory member 30 between the inner surface of the through hole Wa and the outer surface of the wiring / piping material 11 without a gap. Therefore, the fire protection structure of the fire protection partition wall W can be simplified and the workability becomes easy.

(2) When constructing the fireproof structure of the fireproof partition wall W, if the fireproof member 30 is compressed and packed in the gap, the fireproof member 30 returns to its original shape. Since the base 31 is made of foamed chloroprene rubber and has a larger reaction force than the refractory member provided with ceramic wool or rock wool, the refractory member 30 can be strongly pressed against the wiring / piping material 11.

(3) Since the foamed chloroprene rubber is used as the foam, the base 31 can be easily compressed and deformed as a sponge, and the rubber elasticity can exert a more suitable reaction force.
(4) The thickness of the refractory member 30 (first refractory member 30A) in contact with the outer surface of the wiring / piping material 11 is made thinner than the thickness of the refractory member 30 (second refractory member 30B) not in contact with the wiring / piping material 11. The thinner the thickness of the first refractory member 30A, the more easily the base 31 is deformed. Therefore, the first refractory member 30A can easily follow the shape of the wiring / piping material 11, and the wiring / piping material 11 and the first fireproof member 30A It becomes difficult for a gap to be formed between the two.

Further, the first refractory member 30A, which is easily compressed and deformed and has a small reaction force, is brought into contact with the outer peripheral surface of the wiring / piping material 11, and the second refractory member 30B, which is not easily compressed and deformed and has a large reaction force, is the first refractory member. It was arranged on the outside of 30A. As a result, the first refractory member 30A having a small reaction force can be strongly pressed against the outer surface of the wiring / piping material 11 by utilizing the second refractory member 30B having a large reaction force. Therefore, by properly using the fireproof member 30 according to the thickness, it is difficult to form a gap, and it is possible to construct a fireproof structure in which the fireproof member 30 is pressed against the wiring / piping material 11.

(5) For example, as a refractory member, there is a member in which a block body of rock wool or ceramic wool is covered with an exterior member formed into a square box shape with a heat-expandable heat-resistant material. In such a refractory member, the rigidity of the corner portion of the exterior member is high, and it is difficult to be deformed by following the outer surface of the wiring / piping material 11. However, the refractory member 30 of the present embodiment is composed of a base 31 made of foamed chloroprene rubber and a sheet material 41 made of non-woven fabric, and is flexible as a whole. Therefore, compression deformation is not hindered at any portion of the refractory member 30, particularly at the corner portion, and the refractory member 30 can be pressure-welded to follow the shape of the wiring / piping material 11.

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

(7) A sheet material 41 is attached to the first surface 31a and the second surface 31b of the base portion 31, and the frictional resistance on the surface of the sheet material 41 is smaller than the frictional resistance on the surface of the base portion 31. Therefore, as compared with the case where the sheet material 41 is absent and the surface of the base 31 is exposed, the fireproof member 30 and the gap refractory member 35 are more likely to slip into the gap, and the fireproof member 30 and the gap fireproof member 35 are gapped. Easy to stuff into. As a result, the workability of the fireproof member 30 when constructing the fireproof structure can be improved.

(8) The sheet material 41 is divided into each block portion 34 along the slit 32. For example, when the sheet material 41 is not divided for each block portion 34 and one sheet material 41 is attached to the entire first surface 31a, the deformation of each block portion 34 is hindered by the sheet material 41. It can be eliminated. Therefore, each block portion 34 is easily deformed independently, and is easily deformed by following the shape of the wiring / piping material 11.

(9) The fireproof members 30 adjacent to each other in the stacking direction were joined with the double-sided tape T. Therefore, when the refractory member 30 is packed in the gap, it is possible to prevent the already installed refractory member 30 from being displaced due to the pushing of the refractory member 30. Further, after the construction of the fire protection structure, the double-sided tape T can maintain the laminated state of the fire resistance member 30.

(10) The refractory member 30 includes a base 31 and a sheet material 41 attached to the base 31, and the base 31 is a foamed chloroprene rubber and does not contain inorganic fibers such as rock wool and ceramic wool. Therefore, even if the refractory member 30 is cut by a human hand or scissors 51 in order to form the refractory member 35 for a gap, the material such as fibers does not scatter from the cut surface, and the material is prevented from scattering. It is not necessary to perform a treatment for covering the cut surface.

Further, when the blade 51a of the scissors 51 is inserted into the refractory member 30 in order to cut the refractory member 30, the sheet material 41 can suppress the compression deformation of the sponge-like base 31. As a result, the base 31 can be easily cut. 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. Therefore, when constructing the fire protection structure. The workability of the fireproof member 30 can be improved.

(11) The sheet material 41 is also attached to the entire first surface 31a of the base 31 excluding the slit 32 and the entire second surface 31b, and also to the long side edge 31c into which the blade 51a of the scissors 51 enters. Existing. Therefore, regardless of where the blade 51a of the scissors 51 is inserted except for the slit 32, the sheet material 41 can suppress the compression deformation of the base portion 31, and the base portion 31 can be easily cut.

(12) A plurality of slits 32 are provided in the base portion 31 of the refractory member 30, and the sheet material 41 is divided at a portion along each slit 32. Therefore, the sheet material 41 on the first surface 31a side does not need to be cut, and the refractory member 35 for gaps can be easily manufactured.

(13) The sheet material 41 is made of non-woven fabric. The non-woven fabric is formed without weaving non-continuous fibers (staple fibers), and is more flexible than, for example, a woven fabric in which continuous fibers are woven. Therefore, even if the refractory member 30 has the sheet material 41, it is easily compressed and deformed, and the work of packing it in 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 refractory member 30 can be pressed against the wiring / piping material 11 by the reaction force of the refractory member 30 and the refractory member 35 for gaps themselves. 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 portion 34 that is difficult to be compressed and the block portion 34 that is easily compressed are not generated due to the difference in size, and each block portion 34 can be deformed following the wiring / piping material 11.

(15) The depth of the slit 32 is larger 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. Therefore, the connecting portion 33 can be easily cut by a human hand and scissors 51.

(16) By forming the refractory member 35 for a gap into a rectangular parallelepiped shape, the thickness is different between the thickness along the long side and the thickness along the short side of the refractory member 35 for the gap, and the reaction force generated according to the thickness is also generated. different. Then, by selecting the direction in which the gap refractory member 35 is packed, a reaction force corresponding to the packing location can be generated in the gap fireproof member 35.

The above embodiment may be changed as follows.
○ In the embodiment, all the closing members accommodated in the through hole Wa are used as the fireproof member 30, but the closing member that comes into contact with the outer surface of the wiring / piping material 11 is used as the fireproof member 30 (preferably the first fireproof member 30A). Others may be a closing member having no thermal expansion performance.

The closing member having no thermal expansion performance includes a flat plate-shaped base made of foam. Since the base is a foam, it has a reaction force that tends to return to its original shape when compressed in the thickness direction. The base is obtained from a base material in which a polymer is used as a base material and an inorganic additive is added together with a foaming agent. Examples of the inorganic additive added to the foam include calcium carbonate and magnesium hydroxide.

Then, the refractory member 30 and the closing member are housed in the through hole Wa in a state where a plurality of the refractory member 30 and the closing member are laminated in the facing direction between the outer surface of the wiring / piping material 11 and the inner surface of the through hole Wa. .. At this time, the refractory member 30 and the closing member are accommodated between the outer surface of the wiring / piping material 11 and the inner surface of the through hole Wa in a compressed state in the thickness direction. Then, the refractory member 30 in contact with the outer surface of the wiring / piping material 11 is pressed against the outer surface of the wiring / piping material 11 by the reaction force of the fireproof member 30 itself and the reaction force of the other laminated closing member (foam). is doing.

In such a configuration, in order to press the fireproof member 30 to the wiring / piping material 11, the fireproof member 30 and the closing member are surrounded by a band, or the fireproof member 30 is in contact with the wiring / piping material 11 with two plate materials. There is no need to pinch. That is, the refractory member 30 can be pressed against the wiring / piping material 11 simply by packing 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 material 11 without a gap. Therefore, the fire protection structure of the fire protection partition wall W can be simplified and the workability becomes easy.

In the event of a fire, the blocking member maintains its shape even in the event of a fire due to the inorganic additives. Further, the gap created by the burning of the wiring / piping material 11 is closed by the expansion of the refractory member 30. At this time, since the refractory member 30 is in contact with the outer surface of the wiring / piping material 11, the refractory member 30 expands due to the heat of the wiring / piping material 11, and the gap can be quickly closed.

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

Further, a plugging member obtained by foaming a base material to which an inorganic additive is added and a refractory member 30 having thermal expansion performance are integrated in a state of being laminated in advance, and the lamination direction is wiring / piping. 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 be aligned with each other in the facing direction.

The closing member having no thermal expansion performance may be the same as the refractory member 30 except that the material of the base is different, and the slit 32, the connecting portion 33, the block portion 34, and the sheet material 41 are referred to as the refractory member 30. It may be provided in the same manner.

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

○ In the embodiment, all the closing members housed in the through hole Wa are made of the refractory member 30, but among the plurality of closing members housed in the through hole Wa, some of the closing members that do not come into contact with the outer surface of the wiring / piping material 11 are closed. The member may be a refractory member 30 which is a closing member having thermal expansion performance.

○ As shown in FIG. 8, the refractory member 30 may be composed of only the base 31 and may not include the sheet material 41. In this case, the base portion 31 is formed with a slit 32 extending in the thickness direction from the first surface 31a, and the connecting portion 33 is formed on the second surface 31b 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 refractory member 30 can be easily cut by a human hand. Then, when one block portion 34 separated by the slit 32 is used as the refractory member 35 for a gap, the connecting portion 33 is cut.

○ As shown in FIG. 10, the refractory member 30 is integrated with a plurality of bases 31 formed in a block shape in a state where the plurality of bases 31 are arranged side by side, and a sheet material 41 attached to each base 31. , May be composed of. In this case, the sheet material 41 is attached to only one side of each base portion 31. Instead of the non-woven fabric sheet material 41, a plurality of bases 31 are attached to a base member formed of a hard material such as a resin plate and made of a material having lower flexibility than the sheet material 41 to be a refractory member. May be. In this case, the base member can be broken and cut by a human hand or a manual cutting tool such as scissors 51.

In this configuration, the refractory member 30 is preliminarily divided into a plurality of bases 31, so that when the base 31 is used as the refractory member for gaps 35, it is only necessary to cut the sheet material 41 or the base member. The refractory member 35 for a gap can be easily formed.

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

○ As shown in FIG. 12, a tubular member 50 along the peripheral edge of the through hole Wa of the fireproof partition wall W is fixed to the outer surface of the fireproof partition wall W, and a space surrounded by the tubular member 50 and a through hole Wa are formed. Including, it may be a through hole 50a provided in the fireproof partition wall W. Regarding the fire protection structure of the fire protection partition wall W, the inner surface of the tubular member 50 is set as the inner surface of the through hole 50a, and the fire resistance 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. The fireproof member 30 may be housed only in the tubular member 50, or may be housed straddling the cylindrical member 50 and the fireproof partition wall W.

○ In the embodiment, the fireproof members 30 are stacked in the vertical direction facing each other, and the plurality of fireproof members 30 are stacked. However, as shown in FIG. 13, the outer surface of the wiring / piping material 11 and the inner surface of the through hole Wa 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 member 30 matches 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 double-sided tape, and the sheet material 41 joins the base portions 31 adjacent to each other in the left-right direction (lamination direction).

The fire protection structure of the fire protection partition wall W may be constructed by laminating all the fire resistance members 30 in the left-right direction.
○ In the embodiment, the refractory member 30 is used properly according to the reaction force and the deformability based on the thickness of the base 31, but the reaction force and the deformability based on the degree of foaming and the density of the synthetic rubber in the base 31 are used. The fireproof member 30 may be used properly.

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

○ In the embodiment, the refractory members 30 adjacent to each other in the stacking direction are joined by the double-sided tape T, but the joining by the double-sided tape T may not be necessary.
○ In the embodiment, the refractory members 30 adjacent to each other in the stacking direction are bonded to each other by the double-sided tape T, but the refractory members 30 adjacent to each other in the stacking direction may be bonded to each other by a method other than the double-sided tape P, for example, an adhesive. ..

○ The sheet material 41 attached to the first surface 31a of the base 31 is not divided along the slit 32, and may be attached to the entire first surface 31a so as to cover the slit 32. In this configuration, even if the sheet material 41 is attached so as to cover the slit 32, the slit 32 can be used as a place for inserting the blade 51a of the scissors 51 when the sheet material 41 is divided. Further, although the sheet material 41 is not divided before the construction, the sheet material 41 may be cut along the slit 32 at the time of construction to have the same embodiment as the refractory member 30 of the embodiment.

Further, the sheet material 41 of the first refractory member 30A that comes into contact with the wiring / piping material 11 is divided along the slit 32, and the sheet material 41 of the second refractory member 30B that does not come into contact with the wiring / piping material 11 is divided. It does not have to be.

○ The refractory member 30 and the closing member are composed of only the base 31, and the sheet material 41 may not be present.
○ The sheet material 41 may be attached only to the second surface 31b of the base 31, or may be attached only to the first surface 31a.

○ In the embodiment, the first refractory member 30A and the second refractory member 30B are used in combination, but the thickness of the refractory member 30 may be only one type.
○ The refractory member 30 and the slit 32 of the closing member may not be provided. Even in this case, the base portion 31 is deformed following the outer surface shape of the wiring / piping material 11 and is pressed against the outer surface of the wiring / piping material 11 by the reaction force.

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

○ The depths of the fireproof member 30 and the plurality of slits 32 of the closing member are not all the same, but may be different.
○ The depth of the slit 32 may be smaller than half the thickness of the base 31.

○ The slit 32 of the refractory member 30 and the closing member may have a shape other than the shape extending in the lateral direction of the base 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.

○ Three or more types of thicknesses of the refractory member 30 and the closing member may be set. Even in this case, it is preferable to make the thickness of the refractory member 30 and the closing member in contact with the outer peripheral surface of the wiring / piping material 11 the thinnest.

○ The refractory member 30 and the closing member do not have the slit 32 before the construction, and the sheet material 41 and the base 31 may be cut at the same time to form the slit 32 in the base 31 at the time of construction.

○ The refractory member 30 and the closing member do not have to have a rectangular flat plate shape. 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 have a square shape, or the first surface 31a and the second surface 31b have a flat plate shape having an oblong shape. May be.

○ The through hole Wa of the fire protection partition wall W may be a circular hole or an elliptical hole instead of a rectangular hole.

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

Claims (8)

It is a fire protection structure of a fire protection compartment wall in which a long penetrating member is inserted through a through hole provided in the fire protection compartment wall.
Between the outer surface of the through member and the inner surface of the through hole, a base made of foam and at least one of the surfaces located at both ends in the thickness direction of the base are attached and surface. A sheet material having a frictional resistance smaller than the frictional resistance on the surface of the base thereof is provided, and a closing member having a reaction force that tends to return to the original shape when the base is compressed surrounds the penetrating member and penetrates the base. A plurality of members are accommodated in a state of being laminated in a facing direction between the outer surface of the member and the inner surface of the through hole.
The closing member in contact with the outer surface of the penetrating member is in pressure contact with the outer surface of the penetrating member by its own reaction force and the reaction force of the other laminated closing members.
Of the plurality of laminated closing members, at least one closing member has thermal expansion performance.
A fire protection structure for a fire protection compartment wall, characterized in that a plurality of types of closing members having relatively different reaction force strengths and deformability are laminated in the stacking direction. The fire protection structure for a fire protection compartment wall according to claim 1, wherein the plurality of types of closing members laminated in the stacking direction have relatively different thicknesses in the stacking direction in their original shapes. The fire protection structure for a fire protection compartment wall according to claim 1 or 2, wherein the at least one closing member having the thermal expansion performance is a closing member in contact with the outer surface of the penetrating member. The fire protection of the fire protection partition wall according to any one of claims 1 to 3, wherein all the closing members accommodated between the outer surface of the through member and the inner surface of the through hole have thermal expansion performance. Measure structure. Of 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 from the surface of the closing member in contact with the penetrating member. The fire protection measure for a fire protection compartment wall according to any one of claims 1 to 4, further 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. Construction. The fire protection structure for a fire protection compartment wall according to claim 5 , wherein the sheet material is independently attached to each of the block portions. A claim that a gap closing member formed by cutting the closing member and being subdivided by cutting the closing member is housed in a gap formed between the outer surface of the penetration member and the inner surface of the through hole and smaller than the closing member. The fire protection structure for the fire protection compartment wall according to any one of claims 1 to 6 . The fire protection structure for a fire protection compartment wall according to any one of claims 1 to 7 , wherein the closing members adjacent to each other in the stacking direction are joined to each other.

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