JP2021137471A - Fire proof member and construction method of fire proof structure - Google Patents

Abstract

To provide a fire proof member capable of being suitably used for construction for forming multiple different kinds of fire proof structures even when a support member and a joint sealer are integrated, and a construction method of a fire proof structure.SOLUTION: A fire proof member 11 is used for application of suppressing fire spread through an open hole 51a in a partition structure 71. The fire proof member 11 comprises: a thermally expansive member 12 having a thermal expansion material which thermally expands with heat at a fire disaster; a supporting member 21 supporting the thermal expansive member 12; and a joint sealer 31 inserted between an outer peripheral face of a first pipe body 61 and an inner peripheral face of the open hole 51a. The supporting member 21 comprises: a holding part 22 for holding the thermally expansive member 12; an engagement part 23 to engage with an upper end open edge of the open hole 51a; and a coupling part 24 coupling the holding part 22 and the engagement part 23. The joint sealer 31 is fitted to the coupling part 24 and is movable along the coupling part 24.SELECTED DRAWING: Figure 5

Description

The present invention relates to a fireproof member and a method of constructing a fireproof structure.

Conventionally, in order to suppress the spread of fire through the through hole of the section through which the pipe body is inserted, a refractory member provided with a thermal expansion material that expands due to the heat of a fire has been used. Patent Document 1 discloses a configuration in which a joint material is arranged together with a thermal expansion material between a through hole in a compartment and a pipe body. Further, Patent Document 2 discloses a fireproof member including a thermal expansion material, a support member for supporting the thermal expansion material, and a joint material (seal material) fixed to the support member.

JP-A-2017-109069 JP-A-2019-052746

By fixing the joint material to the support member that supports the thermal expansion material in advance as disclosed in Patent Document 2, the support member, the thermal expansion material, and the joint material can be handled as an integral product. The support member of such a refractory member has a main body portion to which the joint material is fixed, and a locking portion to be locked to the upper end opening edge of the through hole of the partition portion. The joint material is fixed to the upper end of the main body of the support member so as to be in contact with the locking portion of the support member. The joint material fixed in this way is arranged at the upper end in the through hole of the compartment when the refractory member is attached to the compartment.

Here, when forming a partition structure through which the pipe body is inserted, a joint pipe may be assembled to the upper end portion of a straight pipe arranged in the through hole of the compartment portion. In the case of this construction, if the fireproof member is attached before assembling the joint pipe to the straight pipe, the joint material is placed at the upper end of the through hole in the section, so the work of inserting the joint pipe into the through hole from above becomes complicated. Become.

Further, in the case of constructing a fireproof structure in which the sealing material is filled above the joint material arranged in the through hole, when the joint material is arranged at the upper end in the through hole as described above, a space for filling the sealing material is provided. Cannot be secured.

As described above, in the conventional refractory member, for example, in the construction of forming a refractory structure in which a straight pipe and a joint pipe are connected in a through hole of a compartment or a refractory structure in which a sealing material is filled on a joint material. It could not be used suitably.

The present invention has been made in view of such circumstances, and an object of the present invention is to suitably use it for construction to form a plurality of different types of fireproof structures even when the support member and the joint material are integrated. It is an object of the present invention to provide a fireproof member capable of forming a fireproof member and a method of constructing a fireproof structure.

The fire-resistant member that solves the above-mentioned problems is a fire-resistant member used for suppressing the spread of fire through the through-hole in a partition structure having a section having through holes that penetrate vertically and a pipe body that is inserted through the through-hole. A heat-expandable member having a heat-expandable material that thermally expands due to the heat of a fire, a support member that supports the heat-expandable member, and an outer peripheral surface of the pipe body and an inner peripheral surface of the through hole. The support member includes a joint material to be inserted between the joint members, a holding portion for holding the thermally expandable member, a locking portion for locking to the upper end opening edge of the through hole, and the holding portion. The joint material includes a connecting portion for connecting the locking portion, and the joint material can be attached to the connecting portion and can move along the connecting portion.

As described above, the joint material is attached to the connecting portion of the support member and can be moved along the connecting portion. Therefore, for example, the joint material is attached to the upper end portion of the first tubular body arranged in the through hole of the partition portion. The joint material can be arranged at a position that does not interfere with the work of connecting the pipe bodies. As described above, according to the fireproof member, it can be suitably used for the construction of assembling the second pipe body to the upper end portion of the first pipe body arranged in the through hole of the section portion. Further, since the joint material can be moved along the connecting portion, for example, construction of a fireproof structure in which a fireproof member is attached so that the joint material is arranged at the upper end in the through hole of the compartment, or the construction of the compartment. It can also be suitably used for the construction of a fireproof structure in which a sealing material is filled above the joint material arranged in the through hole.

In the refractory member, it is preferable that the joint material has an insertion portion through which the connecting portion is inserted, and is attached to the connecting portion by inserting the connecting portion through the insertion portion.
According to this configuration, it is possible to suppress an increase in the number of parts in a configuration in which the joint material is attached to the connecting portion.

In the refractory member, the heat-expandable member further includes a coating material for coating the heat-expanding material, and the coating material is heated from both sides of the heat-expanding material which is inside and outside in the radial direction of the pipe body. It is preferable that the upper coating material includes an upper coating material that covers the upper end of the expansion material so as to straddle the upper end, and the upper coating material has fire resistance.

According to this configuration, the upward thermal expansion of the thermal expansion material in the event of a fire is suppressed by the fire-resistant upper coating material. As a result, the thermal expansion material can be thermally expanded at a predetermined position. Further, by limiting the thermal expansion of the thermal expansion material by the upper coating material, it is possible to increase the density of the expansion body formed from the thermal expansion material.

The method of constructing the fireproof structure is a method of constructing the fireproof structure using the fireproof member, wherein the step of moving the joint material of the fireproof member along the connecting portion and the locking portion of the fireproof member are described. A step of locking to the upper end opening edge of the through hole is provided.

According to the present invention, even when the support member and the joint material are integrated, it can be suitably used for construction for forming a plurality of different types of fireproof structures.

It is a perspective view which shows the refractory member of 1st Embodiment. (A) is a cross-sectional view of a heat-expandable member along line 2a-2a of FIG. 1, and (b) is a schematic view showing a state of thermal expansion. It is a partial cross-sectional view which shows the fireproof structure. It is explanatory drawing explaining the construction method of a fireproof structure. It is explanatory drawing explaining the construction method of a fireproof structure. It is sectional drawing which shows the fireproof structure of 2nd Embodiment. It is sectional drawing which shows the fireproof structure of 3rd Embodiment. (A) and (b) are plan views which partially show the modification example of the refractory member. (A) is a perspective view partially showing an example of modification of the fireproof member, and (b) is a cross-sectional view partially showing an example of modification of the refractory structure.

(First Embodiment)
Hereinafter, the first embodiment of the method for constructing the refractory member and the refractory structure of the present invention will be described.
As shown in FIGS. 1 and 3, the refractory member 11 is used for suppressing the spread of fire through the through hole 51a in the partition structure 71. The partition structure 71 includes a partition 51 having a through hole 51a penetrating vertically and a first pipe body 61 inserted into the through hole 51a of the partition 51. The section 51 is made of concrete, for example, and constitutes the floor of the building.

The partition structure 71 of the present embodiment has a second pipe body 62 connected to the upper end portion of the first pipe body 61 which is a straight pipe. The second pipe body 62 is a joint pipe, and the lower end portion of the second pipe body 62 is inserted into the through hole 51a of the partition portion 51 and connected to the first pipe body 61. The second pipe body 62 is connected to a third pipe body 63, which is a horizontal pipe extending in the horizontal direction, and a fourth pipe body 64, which is a vertical pipe extending upward. Each tube body 61, 62, 63, 64 has a main body tube made of a resin such as polyvinyl chloride. Each pipe body may be configured by arranging a soundproof layer on the outer periphery of the resin main body pipe, if necessary. When arranging the soundproof layer, the end portion connected by being fitted into the pipe body such as the second pipe body 62, for example, the upper end portion of the first pipe body 61, is not covered with the soundproof layer. The outer peripheral surface of the main body tube is exposed.

The fireproof member 11 is inserted between the heat-expandable member 12, the support member 21 that supports the heat-expandable member 12, and the outer peripheral surface of the first tubular body 61 and the inner peripheral surface of the through hole 51a of the compartment 51. It is provided with a joint material 31 to be formed.

As shown in FIG. 2A, the heat-expandable member 12 has a heat-expandable material 13 that thermally expands due to the heat of a fire. As the thermal expansion material 13, a commercially available thermal expansion material 13 for fire resistance of buildings and the like, or a mixture of commercially available raw materials can be used. The thermal expansion material 13 preferably contains expanded graphite, and more preferably further contains a shape stabilizer that stabilizes the shape of the expanded graphite after thermal expansion. Examples of the shape stabilizer include boric acid and resin. The expansion coefficient of expanded graphite is preferably 100 times or more, and more preferably 200 times or more. The expansion coefficient of expanded graphite is obtained from the volume change when 1 g of expanded graphite is heated at 900 to 1000 ° C. for 5 minutes. The upper limit of the expansion coefficient of expanded graphite is not particularly limited, but is, for example, less than 1000 times. When the thermal expansion material 13 has fluidity such as a paste or powder, the thermal expansion member 12 may be configured to include the thermal expansion material 13 and a bag for accommodating the thermal expansion material 13. The bag is constructed, for example, using a synthetic resin film as a base material.

The heat-expandable member 12 further includes a coating material 14 that covers the heat-expandable material 13. The covering material 14 includes an upper covering material 15 that covers the first tubular body 61 so as to straddle the upper end of the thermal expansion material 13 from both sides of the thermal expansion material 13 which is the inner and outer sides in the radial direction. More specifically, the upper covering material 15 has a first side portion arranged between the inner peripheral surface of the through hole 51a of the partition portion 51 and the thermal expansion material 13, and the outer peripheral surface of the first tubular body 61 and thermal expansion. It has a second side portion arranged between the material 13 and an intermediate portion connecting the upper end of the first side portion and the upper end of the second side portion.

The upper covering material 15 has fire resistance. The upper covering material 15 preferably has a sheet material formed of refractory fibers. Examples of the fireproof fiber include glass wool, rock wool, ceramic wool, gypsum fiber, carbon fiber, stainless fiber, slag fiber, silica alumina fiber, alumina fiber, silica fiber, and zirconia fiber. The upper covering material 15 may be a sheet formed of refractory fibers and a metal foil such as an aluminum foil bonded to each other. The upper coating material 15 is preferably fixed to the thermal expansion material 13 via an adhesive layer.

Further, the covering material 14 includes a lower covering material 16 that covers the first tubular body 61 so as to straddle the lower end of the thermal expansion material 13 from both sides of the thermal expansion material 13 which is the inner and outer sides in the radial direction. More specifically, the lower covering material 16 has a first side portion arranged between the inner peripheral surface of the through hole 51a of the partition portion 51 and the thermal expansion material 13, and the outer peripheral surface and heat of the first tubular body 61. It has a second side portion arranged between the expansion member 13 and an intermediate portion connecting the lower end of the first side portion and the lower end of the second side portion.

The lower coating material 16 may have fire resistance as well as the upper coating material 15, or may have non-fire resistance. Examples of the lower coating material 16 having non-fire resistance include cloth, paper and the like. The lower coating material 16 is preferably fixed to the thermal expansion material 13 via an adhesive layer.

The upper coating material 15 and the lower coating material 16 may be arranged so as to overlap each other at an intermediate position in the vertical direction of the thermal expansion material 13, or may be arranged so as not to overlap each other.
As shown in FIGS. 1 and 3, the support member 21 holds a holding portion 22 that holds the heat-expandable member 12 and a locking portion 23 that locks to the upper end opening edge of the through hole 51a of the partition portion 51. A connecting portion 24 for connecting the portion 22 and the locking portion 23 is provided.

The holding portion 22 has, for example, a shape that sandwiches the heat-expandable member 12 from above and below, and is configured to hold the heat-expandable member 13, but has another shape capable of holding the heat-expandable member 12. It may be. The locking portion 23 is formed in a claw shape that projects laterally from the connecting portion 24. The shape of the connecting portion 24 is a straight line extending vertically. The support member 21 is preferably made of metal. The support member 21 of the present embodiment is formed by bending such as cutting and raising a plate material. The support member 21 may be formed of, for example, a bar or a net material. The support member 21 can also be configured by connecting a plurality of parts. The refractory member 11 of the present embodiment includes two support members 21, but the number of support members 21 may be one or three or more.

The joint material 31 is attached to the connecting portion 24 of the support member 21 and is movable along the connecting portion 24. More specifically, the joint material 31 of the present embodiment has an insertion portion 31a through which the connecting portion 24 of the support member 21 is inserted, and is attached to the connecting portion 24 by inserting the connecting portion 24 through the insertion portion 31a. ing. The insertion portion 31a of the present embodiment is a through hole that opens above and below the joint material 31, and the connecting portion 24 inserted through the insertion portion 31a is surrounded by the joint material 31. The joint material 31 can move up and down along the connecting portion 24 between the holding portion 22 and the locking portion 23 of the support member 21. In the joint material 31, at least a part of the inner surface of the insertion portion 31a is in contact with the outer surface of the connecting portion 24 of the support member 21. The movement of the joint material 31 is guided by the connecting portion 24 of the support member 21.

As the joint material 31, a commercially available joint material 31 (backup material) for buildings can be used. The shape of the joint material 31 is, for example, a columnar shape such as a prismatic columnar shape or a columnar shape. As the material of the joint material 31, a foam made of an organic polymer material such as rubber (ethylene, propylene, diene rubber, nitrile rubber, etc.) and resin (polyethylene, etc.) is preferable.

Next, the construction method of the refractory structure will be described together with the action of the refractory member 11.
As shown in FIG. 4, the partition structure 71 to which the refractory member 11 is applied includes a partition portion 51 and a first pipe body 61 arranged in the through hole 51a of the partition portion 51. In order to mount the refractory member 11 on the section 51, the heat-expandable member 12 is inserted between the inner peripheral surface of the through hole 51a and the outer peripheral surface of the first tubular body 61, and the locking portion of the support member 21 is locked. 23 is locked to the upper end opening edge of the through hole 51a. At this time, since the joint material 31 of the refractory member 11 is attached to the support member 21 in advance, the heat-expandable member 12, the support member 21, and the joint material 31 can be handled as an integral product.

As shown in FIG. 5, the joint material 31 attached to the support member 21 is arranged between the inner peripheral surface of the through hole 51a of the compartment 51 and the outer peripheral surface of the first tubular body 61. The joint material 31 is movable along the connecting portion 24 of the support member 21. That is, by moving the joint material 31, the vertical position of the joint material 31 in the through hole 51a can be adjusted.

Next, the second pipe body 62 is fitted onto the upper end of the first pipe body 61, and the second pipe body 62 is connected to the first pipe body 61. At this time, by arranging the joint material 31 by moving it downward from the position shown by the alternate long and short dash line in FIG. 5, for example, the space around the upper end portion of the first tubular body 61 can be secured. That is, according to the refractory member 11 of the present embodiment, the joint material 31 can be arranged at a position that does not interfere with the work of connecting the second pipe body 62 to the first pipe body 61.

The joint material 31 is preferably arranged in a state of being compressed and deformed between the inner peripheral surface of the through hole 51a of the section 51 and the outer peripheral surface of the first tubular body 61. As a result, the gap between the connecting portion 24 of the support member 21 and the joint material 31, the gap between the inner peripheral surface and the joint material 31 in the through hole 51a, and the gap between the outer peripheral surface of the first tubular body 61 and the joint material 31 are reduced. It can be easily closed.

As shown in FIG. 4, the heat-expandable member 12 of the refractory member 11 has a pair of ends in the circumferential direction of the first tubular body 61. The pair of ends of the heat-expandable member 12 can be arranged so as to abut each other, for example, as shown in FIG. Further, although not shown, the length of the heat-expandable member 12 may be set so that the pair of ends of the heat-expandable member 12 can be arranged so as to overlap each other in the radial direction of the first tubular body 61.

As shown in FIG. 4, the joint material 31 of the refractory member 11 also has a pair of ends in the circumferential direction of the first tubular body 61. The pair of ends of the joint material 31 can be arranged so as to abut each other, for example, as shown in FIG. Further, although not shown, the length of the joint material 31 may be set so that the pair of ends of the joint material 31 can be arranged so as to be overlapped with each other in the axial direction of the first tubular body 61, that is, in the vertical direction.

As shown in FIG. 3, the third tube 63 and the fourth tube 64 are further connected to the second tube 62 connected to the first tube 61. In this fireproof structure, the space below the compartment 51 is the fire side, and the space above the compartment 51 is the protection side that protects from the spread of fire. When the heat-expandable member 12 is heated by the heat of a fire, the heat-expandable material 13 is thermally expanded to form an inflatable body 17, as shown in FIG. 2 (b). At this time, since the upper coating material 15 has fire resistance, the upward thermal expansion of the thermal expansion material 13 in the event of a fire is suppressed by the upper coating material 15. As a result, the thermal expansion material 13 can be thermally expanded at a predetermined position. Since the lower covering material 16 of the present embodiment has non-fire resistance, the lower covering material 16 collapses or burns down in the event of a fire. The inflatable body 17 thermally expands so as to close the through hole 51a of the compartment 51, thereby protecting the space above the compartment 51 from the spread of fire.

Next, the operation and effect of this embodiment will be described.
(1-1) The refractory member 11 has a through hole 51a in a partition structure 71 including a partition 51 having a through hole 51a penetrating vertically and a first pipe body 61 inserted through the through hole 51a of the partition 51. It is used to suppress the spread of fire through. The fireproof member 11 includes a heat-expandable member 12 having a heat-expandable member 13 that thermally expands due to heat during a fire, a support member 21 that supports the heat-expandable member 12, and an outer peripheral surface and a partition portion of the first tubular body 61. It is provided with a joint material 31 to be inserted between the inner peripheral surface of the through hole 51a of 51. The support member 21 connects the holding portion 22 that holds the heat-expandable member 12, the locking portion 23 that locks to the upper end opening edge of the through hole 51a of the partition portion 51, and the holding portion 22 and the locking portion 23. It is provided with a connecting portion 24 to be formed. The joint material 31 is attached to the support member 21 and can move along the connecting portion 24.

According to this configuration, even when the support member 21 and the joint material 31 are integrated, the joint material 31 is placed at a position that does not interfere with the connection of the second pipe body 62 to the first pipe body 61 as described above. Can be placed. As described above, according to the fireproof member 11 of the first embodiment, for construction of a fireproof structure in which the second pipe body 62 is connected to the upper end portion of the first pipe body 61 arranged in the through hole 51a of the partition portion 51. It can be preferably used.

(1-2) The joint material 31 has an insertion portion 31a through which the connecting portion 24 of the support member 21 is inserted, and is attached to the connecting portion 24 by inserting the connecting portion 24 through the insertion portion 31a. In this case, in the configuration in which the joint material 31 is attached to the connecting portion 24, an increase in the number of parts can be suppressed.

Further, when the insertion portion 31a is a through hole penetrating the joint material 31, when the fireproof member 11 is applied to the partition structure 71, the joint material 31 surrounds the connecting portion 24 of the support member 21. 31 can be arranged. This makes it difficult for a gap to be formed between the connecting portion 24 of the support member 21 and the joint material 31, so that, for example, smoke generated during a fire is prevented from passing between the connecting portion 24 and the joint material 31. be able to.

(1-3) The heat-expandable member 12 further includes a coating material 14 that covers the heat-expandable material 13. The covering material 14 includes an upper covering material 15 that covers the first tubular body 61 so as to straddle the upper end of the thermal expansion material 13 from both sides of the thermal expansion material 13 which is the inner and outer sides in the radial direction. The upper covering material 15 has fire resistance. In this case, the upward thermal expansion of the thermal expansion material 13 in the event of a fire is suppressed by the fire-resistant upper coating material 15. As a result, the thermal expansion material 13 can be thermally expanded at a predetermined position. Further, by limiting the thermal expansion of the thermal expansion material 13 by the upper coating material 15, it is possible to increase the density of the expansion body 17 formed from the thermal expansion material 13. As a result, for example, it is possible to form an inflatable body 17 through which smoke generated at the time of a fire does not easily pass.

(1-4) The method of constructing the refractory structure using the refractory member 11 includes a step of moving the joint material 31 of the refractory member 11 along the connecting portion 24 and penetrating the locking portion 23 of the refractory member 11 through the partition portion 51. It includes a step of locking to the upper end opening edge of the hole 51a. As a result, even when the support member 21 and the joint material 31 are integrated in the refractory member 11, the joint material 31 of the refractory member 11 can be arranged at a predetermined position in the through hole 51a of the compartment 51. can. In the present embodiment, after each of the moving step and the locking step, the step of connecting the second pipe body 62 to the first pipe body 61 is performed, so that the connecting step can be easily performed. Can be done.

(Second Embodiment)
The second embodiment of the method of constructing the refractory member and the refractory structure will be described focusing on the differences from the first embodiment.

As shown in FIG. 6, the partition structure 71 of the second embodiment includes a partition portion 51 and a first pipe body 61 arranged in the through hole 51a of the partition portion 51. The first pipe body 61 of the partition structure 71 of the present embodiment extends upward without being connected to the second pipe body 62 which is a joint pipe.

In order to attach the fireproof member 11 to the partition portion 51, the heat-expandable member 12 is inserted between the inner peripheral surface of the through hole 51a of the partition portion 51 and the outer peripheral surface of the first pipe body 61, and the support member 21 is inserted. The locking portion 23 of the above is locked to the upper end opening edge of the through hole 51a. At this time, the joint material 31 of the refractory member 11 is arranged at the upper end of the connecting portion 24 so as to be in contact with the locking portion 23 of the support member 21. That is, when the refractory member 11 is attached, the joint material 31 is arranged at the upper end of the through hole 51a of the compartment 51. The upper surface of the joint material 31 is provided along the upper end opening of the through hole 51a of the partition portion 51.

As shown in FIG. 1, when the joint material 31 of the refractory member 11 is arranged at a position away from the locking portion 23, the joint material 31 is moved along the connecting portion 24 to the upper end position in contact with the locking portion 23. After that, the fireproof member 11 may be attached to the compartment 51. The refractory member 11 may be arranged in advance at the upper end position where the joint material 31 is in contact with the locking portion 23.

Next, the operation and effect of the second embodiment will be described.
(2-1) The refractory member 11 of the second embodiment is a refractory member 11 having the same configuration as that described in the column (1-1) of the first embodiment. According to this configuration, even when the support member 21 and the joint material 31 are integrated, it can be suitably used for construction to form a fireproof structure of a type different from that of the first embodiment. Specifically, it can be suitably used for construction of a fireproof structure in which the fireproof member 11 is mounted so that the joint material 31 is arranged at the upper end in the through hole 51a of the section 51.

(2-2) The method of constructing the refractory structure in the second embodiment is the step of moving the joint material 31 of the refractory member 11 along the connecting portion 24 to the upper end position in contact with the locking portion 23, and the engagement of the refractory member 11. A step of locking the stop portion 23 to the upper end opening edge of the through hole 51a of the partition portion 51 may be provided. Through these steps, it is also possible to form a fireproof structure in which the joint material 31 is arranged at the upper end in the through hole 51a.

(Third Embodiment)
The third embodiment of the method of constructing the refractory member and the refractory structure will be described focusing on the differences from the first embodiment.

As shown in FIG. 7, the compartment structure 71 of the third embodiment includes a compartment 51 and a first pipe body 61 arranged in the through hole 51a of the compartment 51. The first pipe body 61 of the partition structure 71 of the present embodiment extends upward without being connected to the second pipe body 62 which is a joint pipe.

In order to mount the fireproof member 11 on the compartment 51, the heat-expandable member 12 is inserted between the inner peripheral surface of the through hole 51a of the compartment 51 and the outer peripheral surface of the first tubular body 61, and the support member 21 is inserted. The locking portion 23 of the above is locked to the upper end opening edge of the through hole 51a. At this time, the joint material 31 of the refractory member 11 and the locking portion 23 of the support member 21 are arranged apart from each other. That is, the upper surface of the joint material 31 of the refractory member 11 is arranged below the upper end opening in the through hole 51a of the compartment 51. As a result, in the through hole 51a of the section 51, a concave groove 51b is formed in which the upper surface of the joint material 31 is the bottom surface and the inner peripheral surface of the through hole 51a and the outer peripheral surface of the first tubular body 61 are the side surfaces. NS.

For example, when the joint material 31 of the fireproof member 11 is arranged at the upper end position in contact with the locking portion 23, the locking portion 23 is before or locked to the upper end opening edge of the through hole 51a of the partition portion 51. After that, the joint material 31 may be moved downward so as to be separated from the locking portion 23. The depth of the concave groove 51b can be changed by adjusting the vertical position of the joint material 31.

The recessed groove 51b formed in this way can be filled with a sealing material 32 in order to improve the sealing property between the inner surface of the through hole 51a and the outer peripheral surface of the first tubular body 61. The sealing material 32 is also called a caulking material, and the sealing material 32 is a resin-based sealing material, and examples thereof include a silicone-based sealing material, a urethane-based sealing material, and an acrylic-based sealing material.

Next, the operation and effect of the third embodiment will be described.
(3-1) The refractory member 11 of the third embodiment is a refractory member 11 having the same configuration as that of the first embodiment. According to this configuration, even when the support member 21 and the joint material 31 are integrated, it can be suitably used for construction to form a fireproof structure of a type different from that of the first embodiment. Specifically, it can be suitably used for construction of a fireproof structure in which the sealing material 32 is filled above the joint material 31 arranged in the through hole 51a.

(3-2) The method of constructing the fireproof structure in the third embodiment includes a step of moving the joint material 31 of the fireproof member 11 along the connecting portion 24 and penetrating the locking portion 23 of the fireproof member 11 through the partition portion 51. A step of locking to the upper end opening edge of the hole 51a is provided. According to this method, the distance between the locking portion 23 and the joint material 31, that is, the depth of the concave groove 51b can be adjusted by the step of moving the joint material 31.

(Change example)
The above embodiment may be modified as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

-At least one of the upper coating material 15 and the lower coating material 16 in the heat-expandable member 12 can be omitted. Further, the covering material 14 may further include an outer layer covering material that covers the upper covering material 15 and the lower covering material 16.

-The heat-expandable member 12 may further include a shape-maintaining member that maintains the shape of the expander 17 by being embedded in the expander 17 formed of the heat-expandable material 13.
As shown in FIG. 8A, the insertion portion 31a of the joint material 31 may be formed continuously with the insertion portion 31b that opens to the side of the joint material 31. In this case, the connecting portion 24 of the support member 21 can be inserted from the insertion portion 31b and inserted into the insertion portion 31a. Further, for example, as shown in FIG. 8B, both ends of the mounting member 31c such as a strip-shaped rubber member are fixed to the joint material 31, and the support member 21 is located between the joint material 31 and the mounting member 31c. The connecting portion 24 of the above may be configured to be inserted. By providing the joint member 31c on the joint material 31 in this way, the joint material 31 can be attached to the connecting portion 24 and can be moved along the connecting portion 24.

-In the fireproof structure of the first embodiment, a filler such as a sealing material or a mortar may be filled between the inner surface of the through hole 51a of the compartment 51 and the outer peripheral surface of the first pipe body 61.
The upper surface of the joint material 31 of the second embodiment is provided along the upper end opening of the through hole 51a of the section 51, but the upper surface of the joint material 31 is below the upper end opening of the through hole 51a. It may be located or may be located above the upper end opening of the through hole 51a. For example, as shown in FIG. 9 (a), by forming a recess 31d in which the locking portion 23 enters the portion adjacent to the insertion portion 31a on the upper surface of the joint material 31, as shown in FIG. 9 (b). The upper surface of the joint material 31 may be projected upward from the upper end opening of the through hole 51a of the partition portion 51.

-In the fireproof structure of the second embodiment, a fireproof covering portion using a sealing material, mortar, or the like may be further provided above the joint material 31.
-The sealing material 32 of the third embodiment may be changed to a filler such as mortar.

-In the fireproof structure of the third embodiment, a fireproof coating portion using mortar may be further provided above the sealing material 32.
The fireproof member 11 can also be used for construction of a fireproof structure other than the fireproof structure in the first to third embodiments. That is, the refractory member 11 can be suitably used for the construction of at least two types of refractory structures having different positions of the joint material 31.

-The pipe body inserted into the through hole 51a of the compartment 51 may be used for purposes other than the purpose of circulating wastewater.

11 ... Fireproof member 12 ... Thermal expansion member 13 ... Thermal expansion material 14 ... Coating material 15 ... Upper coating material 21 ... Support member 22 ... Holding part 23 ... Locking part 24 ... Connecting part 31 ... Joint material 31a ... Insertion part 51 ... Section 51a ... Through hole 61 ... First pipe 71 ... Section structure

Claims (4)

A refractory member used for suppressing the spread of fire through the through hole in a partition structure having a partition having through holes penetrating vertically and a pipe body inserted through the through hole.
Inserted between a heat-expandable member having a heat-expandable material that thermally expands due to heat during a fire, a support member that supports the heat-expandable member, and an outer peripheral surface of the pipe body and an inner peripheral surface of the through hole. With the joint material to be done,
The support member includes a holding portion that holds the heat-expandable member, a locking portion that locks to the upper end opening edge of the through hole, and a connecting portion that connects the holding portion and the locking portion. Prepare,
The joint material is a refractory member that is attached to the connecting portion and is movable along the connecting portion. The fireproof member according to claim 1, wherein the joint material has an insertion portion through which the connecting portion is inserted, and is attached to the connecting portion by inserting the connecting portion through the insertion portion. The heat-expandable member further includes a coating material for coating the heat-expandable material.
The coating material includes an upper coating material that covers the upper end of the thermal expansion material from both sides of the thermal expansion material, which is the inner and outer sides of the tubular body in the radial direction, and the upper coating material has fire resistance. The fireproof member according to claim 1 or 2. A method for constructing a refractory structure using the refractory member according to any one of claims 1 to 3.
A step of moving the joint material of the refractory member along the connecting portion, and
A method for constructing a fireproof structure, comprising a step of locking the locking portion of the fireproof member to the upper end opening edge of the through hole.

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