Construction method for fireproof structure, fireproofing material, and fireproof structure

Abstract

To facilitate transport of materials to a construction site and to improve workability at the site.SOLUTION: A construction method for a fireproof structure C for a partition body W in which a long body L penetrates a formed through hole W2, comprises: an attachment process in which a fireproofing material 1 having a sheet-like body 2 having one surface 21 and the other surface 22 opposite to the one surface 21, and the fireproof and flexible sheet-like body 2 is brought close to the through hole W2, and then, the fireproofing material is attached to the periphery of the long body L so that the one surface 21 faces radially inward while an attachment part 3 located on the side closer to the through hole W2 is in contact with the long body L; an inversion process in which a portion of the fireproofing material 1 other than the attachment part 3 is moved so that the one surface 21 is inverted to a radially outward position; and a partition body installation process in which a partition body installation part 4 spaced apart from the attachment part 3 in a surface direction is installed on a surface W1 of the partition body W.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a partition that divides a space, and to a method for constructing a fire-resistant structure, fire-resistant material, and a fire-resistant structure for a partition that has a through hole formed therein and a long body passing through it. [Background technology]

[0002] One example of a fireproofing material that can be applied to the partition is the "fire compartment penetration member" described in Patent Document 1. The objective of this is to provide a fire compartment penetration member with improved versatility and expansion performance, and it is configured by stretching thermal expansion rubber on the inner surface of a metal elastic plate that is bent into a C-shaped cross section. The elastic plate is formed with an engagement claw and multiple engagement holes. This fire compartment penetration member is capable of adjusting the inner diameter by combining the engagement claw and the engagement holes to match the diameter of the pipe that penetrates the fire compartment. In addition, notches that fit into each other are formed on both ends of the thermal expansion rubber, and it is configured to maintain high expansion performance regardless of the adjustment to match the diameter of the pipe.

[0003] However, as described above, the configuration described in Patent Document 1 uses a metal elastic plate bent into a C-shaped cross section, which makes it difficult to transport to the construction site due to its lack of compactness. In addition, since it is necessary to combine the engagement claws and engagement holes while resisting the elasticity of the elastic plate, there is also room for improvement in terms of workability at the construction site. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-250479 A Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an object of the present invention is to provide a method for constructing a fire-resistant structure, a fire-resistant material, and a fire-resistant structure that make it easy to transport materials to a construction site and improve workability on site. [Means for solving the problem]

[0006] The present invention is a method for constructing a fire-resistant structure for a partition that divides a space, in which a long body is inserted through a through hole formed in the partition, the method comprising the steps of: bringing a fire-resistant treatment material having a sheet-like body having one side and another side opposite to the one side, and having fire resistance and flexibility, close to the through hole, and attaching the fire-resistant treatment material around the long body with the one side facing radially inward while abutting an attachment portion located on the side closer to the through hole; moving a portion of the fire-resistant treatment material other than the attachment portion so that the one side is inverted to a position radially outward; and installing a partition installation portion spaced from the attachment portion in the surface direction on the surface of the partition.

[0007] With this configuration, a sheet-like body that is easy to carry can be used, and the fire-resistant material having a flexible sheet-like body can be attached to the long body and moved in an inverted manner so that the fire-resistant material can be installed on the surface of the partition body, making construction easy.

[0008] In the construction method, at least a portion of the fireproofing material has adhesiveness, and in the attaching step, the adhesive portion can be brought into contact with the elongated body.

[0009] According to this configuration, the fireproofing material can be attached to the periphery of the elongated body by adhesion.

[0010] In addition, in the construction method, the fireproofing material comprises a thermal expansion material having fire resistance, and in the installation process, the thermal expansion material can be attached to the periphery of the elongated body, or in the partition installation process, the thermal expansion material can be installed on the surface of the partition.

[0011] According to this configuration, a fire-resistant structure can be constructed in which a thermal expansion material is disposed around the elongated body or on the surface of the partition body.

[0012] Furthermore, in the construction method, the fire-resistant material has a band-like shape in a plan view having a longitudinal direction and a width direction intersecting the longitudinal direction, and in the installation process, the fire-resistant material is installed by wrapping it so that the longitudinal direction is aligned with the circumferential direction of the elongated body, and the width dimension of the installation start portion of the fire-resistant material in the installation process is formed to be larger than the width dimension of the installation end portion, and in the reversal process, the installation start portion can be moved so as to be reversed at a position radially inward from the installation end portion.

[0013] With this configuration, due to the difference in the width direction dimension of the fireproofing material, the distance from the elongated body to the partition installation section after it has been moved in an inverted manner can be made uniform between the installation start portion and the installation end portion.

[0014] The present invention also relates to a fire-resistant treatment material which is a partition that divides a space and is placed on a partition having a long body passing through a through hole formed therein, the fire-resistant treatment material having a sheet-like body having fire resistance and flexibility, a mounting portion which is located in one region of the sheet-like body and is attached so as to abut against the long body when placed on the partition, a partition installation portion which is located in another region of the sheet-like body different from the one region and is installed on the surface of the partition, and an intermediate body which is provided on at least one of the mounting portion and the partition installation portion and is interposed between the sheet-like body and the long body or the surface of the partition.

[0015] With this configuration, a sheet-like body that is easy to carry can be used, and by attaching a fire-resistant material having a flexible sheet-like body to the long body, the fire-resistant material can be installed on the surface of the partition body, making construction easy.

[0016] In addition, in the fire-resistant material, the sheet-like body has one side and another side opposite to the one side, the mounting portion is located on the one side, and the partition installation portion is located on the other side.

[0017] According to this configuration, the fireproofing material, with the mounting portion located on one side attached to the elongated body, can be moved in an inverted manner so that the partition installation portion located on the other side can be installed on the surface of the partition.

[0018] In addition, in the fireproofing material, at least one of the mounting portion and the partition installation portion can be provided with a thermal expansion material having fire resistance.

[0019] With this configuration, a fire-resistant structure equipped with a thermal expansion material can be constructed.

[0020] In addition, in the fire-resistant material, the thermal expansion material is provided as the intervening body, the thermal expansion material has an elongated shape and is provided at the mounting portion, and a portion of the thermal expansion material protrudes longitudinally from the sheet-like body.

[0021] According to this configuration, firstly, the intermediate body can be attached to the elongated body only at the protruding portion, so that it is easy to position it on the elongated body and also easy to attach the entire fireproofing material.

[0022] In addition, the fire-resistant material can be strip-shaped in a plan view having a longitudinal direction and a width direction intersecting the longitudinal direction, and the width dimension on the other longitudinal side can be smaller than the width dimension on one longitudinal side.

[0023] With this configuration, due to the difference in the width direction dimension of the fireproofing material, the distance from the elongated body to the partition installation section after it has been moved in an inverted manner can be made uniform between the installation start portion and the installation end portion.

[0024] The fireproofing material may have an edge shape of the partition installation portion that is curved and protrudes outward.

[0025] According to this configuration, since the edge shape of the partition installation portion is curved, when the through hole is circular, the sheet-like body can be placed on the partition so as to follow the through hole.

[0026] The present invention also provides a fire-resistant structure comprising a partition body that divides a space and has a through hole, a long body that passes through the through hole, a sheet-like body that is arranged on the partition body and has one side and another side opposite to the one side, the sheet-like body having fire resistance and flexibility, an attachment portion located on the one side, and a partition body installation portion located on the other side, the attachment portion being attached to the long body so that the portion of the one side where the attachment portion is located faces toward the long body, and the partition body installation portion being installed on the partition body so that the portion of the other side where the partition body installation portion is located or the portion of the one side corresponding to the partition body installation portion faces toward the partition body.

[0027] With this configuration, a sheet-like body that is easy to carry can be used, and the fire-resistant material having a flexible sheet-like body can be attached to the long body, and then the fire-resistant material can be installed on the surface of the partition body, making it easy to construct a fire-resistant structure. Effect of the Invention

[0028] The present invention uses a sheet-like material that is easy to carry, and the fireproofing material having a flexible sheet-like material is attached to a long body and moved in an inverted manner to install the fireproofing material on the surface of the partition body, making construction easy. Therefore, the material can be easily carried to the construction site, and construction on site can be easily performed. [Brief description of the drawings]

[0029] [Figure 1] FIG. 1 is a plan view showing a fireproofing material according to a first embodiment of the present invention. [Diagram 2] FIG. 4 is a plan view showing a fireproofing material according to a second embodiment of the present invention. [Diagram 3]FIG. 2 is a perspective view showing a state in the middle of winding the fireproofing material according to the first embodiment around a long body when attaching the fireproofing material to a partition body. [Figure 4] FIG. 2 is a perspective view showing a state in which the fireproofing material according to the first embodiment has been wrapped around a long body when being attached to a partition body. [Diagram 5] FIG. 2 is a perspective view showing a state in which the fireproofing material according to the first embodiment is attached to a partition body. [Figure 6] FIG. 6 is a longitudinal sectional view that illustrates the state shown in FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Next, the present invention will be described with reference to an embodiment. Note that the embodiment is merely an example, and the present invention can be modified and embodied in various forms.

[0031] First, the partition W, which is the target for constructing the fireproof structure C by disposing the fireproofing material 1 of this embodiment, will be described. As shown in FIG. 3, the partition W is a plate-like object with a surface dimension larger than a thickness dimension, which is provided to divide the space in a building into a plurality of spaces, and corresponds to, for example, a wall or a floor. In the case of a wall, the space in a building is divided into two spaces, the front side and the back side of the wall. In FIG. 3 and the like, the partition W is drawn as a solid object, but it may be a hollow object composed of, for example, two parallel plate-like bodies. In the partition W, the surface facing the divided space is called the surface W1. This partition W has a through hole W2 penetrating in the thickness direction. In this embodiment, the through hole W2 is a round hole with a circular cross-sectional shape. A long body L penetrates this through hole W2 from one space (for example, the front side) separated by the partition W to the other space (for example, the back side). The long body L is an object that can pass fluid, power, and electrical signals between the one space and the other space and has a longitudinal dimension larger than a radial dimension, such as a pipe or an electric wire. A plurality of long bodies L can be passed through one through hole W2 (three are shown in the figure). In this case, the plurality of long bodies L can be bundled together using a binder or the like.

[0032] Next, the fireproofing material 1 will be described. Fig. 1 shows a first embodiment, and Fig. 2 shows a second embodiment. The fireproofing material 1 can be implemented in various forms other than those shown in the drawings. The fireproofing material 1 in each embodiment is disposed relative to the partition body W. The components constituting each embodiment will be described with the same reference numerals for parts having the same functions, except for parts that will be described separately.

[0033] The fireproofing material 1 is a strip-like shape in plan view having a longitudinal direction and a width direction intersecting (specifically perpendicular to) the longitudinal direction. The fireproofing material 1 of the first embodiment is formed so that the width dimension on the other longitudinal side (left side in the figure) is smaller than the width dimension on one longitudinal side (right side in the figure). On the other hand, the fireproofing material 1 of the second embodiment is formed so that the width dimension on one longitudinal side is equal to the width dimension on the other longitudinal side.

[0034] The fireproofing material 1 has a sheet-like body 2 having fire resistance and flexibility as a main body (basic part). The flexibility is preferably such that it can be easily attached (wrapped) around the long body L shown in Figs. 3 to 5 and moved in an inverted manner. In this embodiment, the sheet-like body 2 is made of a flat sheet and has one surface 21 (the surface shown in Figs. 1 and 2) and another surface 22 (see Fig. 3) opposite to the one surface 21. Since the sheet-like body 2 is flat, the fireproofing material 1 can also be formed flat. This makes it easy to carry and pack. When the one surface 21 is the front surface, the other surface 22 is the back surface. The relationship between the front and back of the sheet-like body 2 can be appropriately determined.

[0035] The sheet-like body 2 is a sheet formed from a non-combustible material, and the base layer can be made of, for example, a glass cloth sheet or a rock wool sheet. Therefore, it is possible to reduce the weight compared to a conventional structure using a metal plate. The base layer can be a single layer or multiple layers. The sheet-like body 2 may be made of only the base layer, or a layer made of another material (for example, a metal layer such as aluminum) can be added to the base layer as appropriate to add performance or aesthetics. For example, by adding a metal layer, the rolled-up deformed state of the sheet-like body 2 as shown in Figures 5 and 6 can be maintained without using a holder (pin, wire, etc.) or adhesive. Layers can be added by various means such as vapor deposition or bonding metal foil, etc.

[0036] The sheet-like body 2 of the first embodiment is a substantially trapezoidal shape laid on its side as shown in FIG. 1, and the edge shape of one long side 231 of the two long sides is a straight line shape. The edge shape of the other long side 241 is a curved shape that protrudes outward with respect to the center of the sheet-like body 2. The two short sides are parallel to each other. Since the edge shape of the other long side 241 is a curved shape, the sheet-like body 2 can be arranged on the partition body W in a shape as shown in FIG. 5 in the partition body installation process described later. Here, if the edge shape of the sheet-like body 2 is not a curved shape, when trying to roll up the sheet-like body 2 located at the center (diametrically inner side) in the state of being wound around the long body L, the overlapped edge parts overlap each other at the same position in the longitudinal direction of the long body L, so that it may be necessary to roll up one of the overlapped sheets, which may be an obstacle to the work (reducing the work efficiency). On the other hand, when the sheet-like body 2 has a curved edge (the other long side 241) as in the first embodiment, the overlapped portion is misaligned along the longitudinal direction of the elongated body L, so that not only the attachment end portion R2 but also the attachment start portion R1 can be easily rolled up, making it easier to roll up the sheet-like body 2 and bring the rolled up portion to the surface W1 of the partition W. In addition, when the rolled up portion is brought to the surface W1 of the partition W, the curved other long side 241 can be easily aligned with the opening edge of the through-hole W2. Therefore, the sheet-like body 2 can be placed in the partition W so that the curved other long side 241 is aligned with the circular through-hole W2.

[0037] The sheet-like body 2 of the second embodiment is trapezoidal as shown in FIG. 2. In the second embodiment, the edge shapes of the four sides are linear. The two long sides 232, 242 are parallel, and one long side 232 is shorter than the other long side 242. As for the short sides, one short side 25 is perpendicular to each of the long sides 232, 242, and the other short side 26 extends obliquely to each of the long sides 232, 242. Therefore, in this sheet-like body 2, the side length of the other short side 26 is longer than the side length of one short side 25. However, the short sides 25, 26 are not limited to this length relationship, and for example, the side lengths of the short sides 25, 26 may be the same (when the sheet-like body 2 is, for example, rectangular), or, contrary to the second embodiment, the side length of one short side 25 may be longer than the side length of the other short side 26.

[0038] The other long side 242 and the oblique short side 26 form a triangular portion 27. This triangular portion 27 is a portion for adjusting the shape of the portion that appears on the surface W1 when the attachment start portion R1 of the fire-resistant material 1 to the long body L is turned up in the inverting process described below and the partition installation portion 4 of the fire-resistant material 1 is placed on the surface W1 of the partition body W in the partition installation process described below. The triangular portion 27 is also a portion for making it easier for the sheet-like body 2 to reach the opening edge of the through-hole W2 and for improving workability.

[0039] In addition to the sheet-like body 2, the fireproofing material 1 also includes an attachment section 3, a partition installation section 4, and an intermediate body 5. The attachment section 3 is located on the one surface 21 of the sheet-like body 2, and the partition installation section 4 is located on the other surface 22.

[0040] The attachment portion 3 is located in one region 23 of the sheet-like body 2. The one region 23 is not a concept related to a surface like the one surface 21, but a concept related to a part. In the first embodiment (FIG. 1), the one region 23 is a region having a width along the linear long side 231. In the second embodiment (FIG. 2), the one region 23 is a region having a width along the short long side 232. In other words, the "region" is a concept broader than "side" (the same applies to the other regions 24). The attachment portion 3 is a portion that is attached so as to come into contact with the elongated body L (more specifically, through an intervening body 5) when disposed on the partition body W, as shown in FIGS. 3 and 4.

[0041] The partition installation section 4 is located in another region 24 different from the one region 23 in the sheet-like body 2. The other region 24 is not a concept relating to a surface like the other surface 22, but a concept relating to a part. In the first embodiment (Fig. 1), the other region 24 is an area having an extension along the long side 241 of the curved shape. In the second embodiment (Fig. 2), the other region 24 is an area having an extension along the long side 242 on the longer side. The partition installation section 4 is installed on the surface W1 of the partition W as shown in Figs. 5 and 6 after going through the various steps described below for constructing the fire-resistant structure C.

[0042] The intermediate body 5 is separate from the sheet-like body 2, and is fixed to one surface 21 or the other surface 22 of the sheet-like body 2 by adhesion or the like to form an integral body. The intermediate body 5 is provided on at least one of the mounting portion 3 and the partition installation portion 4, and constitutes a part of the mounting portion 3 or the partition installation portion 4 when the intermediate body 5 is provided. In this embodiment (first and second embodiments), it is provided on both. In the second embodiment, the intermediate body 5 provided on the partition installation portion 4 is formed to be wider than the intermediate body 5 provided on the mounting portion 3, but they may have the same width. The intermediate body 5 is formed to be wider in response to the requirement that the partition W side has higher fire resistance than the long body L side. The intermediate body 5 is interposed between the sheet-like body 2 and the surface W1 of the long body L or the partition W when the sheet-like body 2 is installed on the long body L or the partition W.

[0043] The intermediate body 5 is, for example, a fire-resistant thermal expansion material. The thermal expansion material expands when it receives heat applied to the partition W, for example, during a fire. The intermediate body 5 provided in the mounting portion 3 expands to close the space created by the burning of the elongated body L. Meanwhile, the intermediate body 5 provided in the partition installation portion 4 expands to close the space of the through hole W2. This prevents the spread of fire to the partitioned space due to the flame passing through the through hole W2 of the partition W. The intermediate body 5 provided in the mounting portion 3 allows the thermal expansion material to be disposed around the elongated body L. Also, the intermediate body 5 provided in the partition installation portion 4 allows the thermal expansion material to be disposed on the surface W1 of the partition W.

[0044] The intermediate body 5 is, for example, a portion made of an adhesive having adhesiveness capable of fixing the sheet-like body 2 to the surface W1 of the long body L or the partition body W. Because the intermediate body 5 has adhesiveness, the fireproofing material 1 can be attached to the periphery of the long body L without necessarily using a separate fixing means. When at least the outer surface of the intermediate body 5 has adhesiveness, a release sheet can be attached to the intermediate body 5 in advance so that the adhesive surface is not exposed until construction.

[0045] The intermediate body 5 can be elongated. The intermediate body 5 can be provided within the formation range of the sheet-like body 2 as in the second embodiment (FIG. 2). On the other hand, the intermediate body 5 can be provided so that a part of it (the protruding part 51) protrudes in the longitudinal direction from the sheet-like body 2 as in the first embodiment (FIG. 1). In the first embodiment, a thermal expansion material having an elongated shape is provided as the intermediate body 5, and the protruding part 51, which is a part of the part provided in the mounting part 3, protrudes from the sheet-like body 2. By forming the intermediate body 5 (thermal expansion material) in this manner, first, only the intermediate body 5 can be attached (wrapped) to the long body L at the protruding part 51, and then the sheet-like body 2 can be attached (wrapped), which makes it easier to position the intermediate body L and easier to attach the entire fireproofing material 1. Due to the presence of the protrusion 51, when the protrusion 51 is first wrapped around the long body L, the diameter dimension of the attachment start portion R1 of the sheet-like body 2 in the attached state can be increased accordingly, and therefore when the inversion process described below is performed, the portion where the winding starts can be separated radially from the long body L, making it easy to move the sheet-like body 2 so as to invert it. In addition, since the sheet-like body 2 is easy to move, it is easy to spread out the sheet-like body 2, and therefore it is easy to spread it out to a state with an expanded diameter dimension (see FIG. 5). The intermediate body 5 (protrusion 51) is not limited to a thermal expansion material, and may be a material other than a thermal expansion material.

[0046] In the fireproofing material 1 of the first embodiment, the intermediate body 5 is not provided on the side of the mounting portion 3 opposite the protruding portion 51 in the longitudinal direction of the sheet-like body 2, and only the sheet-like body 2 is provided. In addition, in the partition installation portion 4, the intermediate body 5 is not provided on the same side as the protruding portion 51 in the longitudinal direction of the sheet-like body 2, and only the sheet-like body 2 is provided. In addition, in the fireproofing material 1 of the second embodiment, the intermediate body 5 is not provided on the triangular portion 27 near the longitudinal end of the sheet-like body 2, and only the sheet-like body 2 is provided. The portion without the intermediate body 5 is provided to make it easier to wrap the fireproofing material 1 around the long body L and to make it easier to roll up the fireproofing material 1 in the inversion process described later.

[0047] The configuration of the fireproofing material 1 is as described above. Next, a method for constructing the fireproofing structure C for the partition W will be described. Figs. 3 to 5 show a construction method using the fireproofing material 1 of the first embodiment (Fig. 1). In this construction method, an attachment process, a reversal process, and a partition installation process are carried out in this order. As shown in Fig. 1 (first embodiment), the fireproofing material 1 used here is provided with a thermal expansion material as an intermediate body 5 on both an attachment portion 3 on one surface 21 of the sheet-like body 2 and a partition installation portion 4 on the other surface 22 of the sheet-like body 2. This thermal expansion material has adhesiveness. The same applies to the fireproofing material 1 of the second embodiment shown in Fig. 2.

[0048] In the attachment step, as shown in FIG. 3, the fireproofing material 1 is brought close to the through hole W2 formed in the partition W. At this time, the attachment portion 3 of the sheet-like body 2 is made to face the surface W1 of the partition W. Then, the attachment portion 3 located on the side closer to the through hole W2 is brought into contact with the long body L that has been previously inserted into the through hole W2 (more specifically, through the intermediate body 5), and the fireproofing material 1 is attached (wrapped) around the long body L so that one surface 21 (for example, the surface) faces inward radially. At this time, the protruding portion 51 of the intermediate body 5 is attached (wrapped) around the long body L. The sheet-like body 2 is then attached (wrapped) in sequence from the attachment start portion R1 (in the illustrated example, the fireproofing material 1 (sheet-like body 2) is wrapped clockwise from the attachment start portion R1 when viewed toward the partition W). When wrapping, it is preferable to wrap the fireproofing material 1 around the long body L one or more times. However, since multiple windings make it difficult to turn the material in the inversion process, it is preferable to wind the material around two times. In the mounting process, the position of the mounting portion 3 relative to the through hole W2 is preferably on the outside of the surface W1 of the partition body W as shown in FIG. 6 (in some cases, a part or the whole of the mounting portion may be located within the space of the through hole W2). In this case, the fireproofing material 1 is mounted by winding the fireproofing material 1 so that the longitudinal direction of the fireproofing material 1 is aligned with the circumferential direction of the long body L. The mounted state is shown in FIG. 4. In the mounting process, the mounting is performed by bringing the adhesive exposed portion of the intermediate body 5 into contact with the long body L. Through this mounting process, the mounting portion 3 of the sheet-like body 2 and the intermediate body 5 on the side of the mounting portion 3 are mounted around the long body L.

[0049] In the reversing step, as shown in FIG. 4, the fireproofing material 1 is turned over so that one surface 21 faces the direction indicated by the arrow T in the figure, that is, the fireproofing material 1 is turned over so that one surface 21 faces the direction indicated by the arrow T in the figure, that is, the fireproofing material 1 is turned over so that one surface 21 faces the direction indicated by the arrow T in the figure in the radial direction relative to the elongated body L. By turning over the fireproofing material 1 and folding it back at an appropriate position, the fireproofing material 1 can be spread in front of the through-hole W2 so as to be in the state shown in FIG. 5 and FIG. 6. The fireproofing material 1 is turned over in order from the attachment end portion R2 of the fireproofing material 1 to the attachment start portion R1 in the circumferential direction. In the reversing step, the attachment portion 3 attached to the elongated body L does not change the surface direction (for example, the normal direction), but the surface direction of the other portion including the partition installation portion 4 is changed from the state after the attachment step. That is, in this embodiment, the entire sheet-like body 2 is not turned over, but a part of it is turned over to change the surface direction.

[0050] In the partition installation process, the partition installation part 4, which is a part of the fireproofing material 1 separated from the mounting part 3 in the surface direction (the direction in which the surface spreads), is installed on the surface W1 of the partition W. At this time, the intermediate body 5 provided on the partition installation part 4 is attached to the surface W1 so as to overlap the entire circumference of the opening edge of the through hole W2, as shown in Figures 5 and 6. In addition, when installing the partition installation part 4 on the surface W1 of the partition W, either the one surface 21 or the other surface 22 may be arranged to face the surface W1 by appropriately folding the sheet-like body 2. The sheet-like body 2 is fixed to the surface W1 by, for example, screwing. In the partition installation process, the partition installation part 4 of the sheet-like body 2 and the intermediate body 5 on the side of the partition installation part 4 are installed on the surface W1 of the partition W.

[0051] In the installation process, the fireproofing material 1 is wound around the long body L, so that the installation start portion R1 of the fireproofing material 1 is located radially inward of the installation end portion R2, as shown in FIG. 4, in accordance with the winding order. In the inversion process, the installation start portion R1 is moved so as to be inverted at a position radially inward of the installation end portion R2. In the partition installation process after the inversion process, the edge of the partition installation portion 4 is made to be substantially circular when facing the surface W1 of the partition W, as shown in FIG. 5. To achieve this, with regard to the fireproofing material 1 of the first embodiment, the width dimension of the installation start portion R1 in the installation process (which needs to be moved significantly in the radial dimension after the partition installation process) is formed larger than the width dimension of the installation end portion R2 (which only needs to be moved slightly in the radial dimension after the partition installation process). Due to the difference in the widthwise dimension of the fire-resistant material 1, the radial distance from the long body L to the partition installation section 4 after it has been moved inverted in the inversion process can be roughly aligned between the installation start part R1 and the installation end part R2.

[0052] As shown in Fig. 6, the portion of the sheet-like body 2 that is close to the mounting portion 3 and that follows the long body L is formed in the inversion step and the partition installation step. By abutting the outer circumferential surfaces of the sheet-like body 2 and the long body L in this portion, it is possible to prevent any space from remaining around the long body L, and as a result, it is possible to completely block the through-hole W2 with the sheet-like body 2. It is also possible to apply an external force to this portion in the partition installation step and squeeze the fireproofing material 1 (sheet-like body 2) so that it adheres closely to the long body L.

[0053] By carrying out the above-mentioned construction method, a fireproof structure C is formed, which is composed of a partition W, a long body L, and a fireproofing material 1 (a sheet-like body 2, an attachment portion 3, a partition installation portion 4, and an intermediate body 5). As described above, the attachment portion 3 and the partition installation portion 4 in this embodiment are provided on the sheet-like body 2. In the fireproof structure C, the attachment portion 3 is attached to the long body L so that a portion of one surface 21 (e.g., the front surface) of the sheet-like body 2 where the attachment portion 3 is located faces the long body L. The partition installation portion 4 is installed on the partition W so that a portion of the other surface 22 (e.g., the back surface) of the sheet-like body 2 where the partition installation portion 4 is located faces the partition W (specifically, the front surface W1 of the partition W). The partition installation portion 4 may be installed on the partition W so that a portion of the one surface 21 of the sheet-like body 2 (a portion corresponding to the partition installation portion 4) faces the partition W by folding and folding back the sheet-like body 2, for example.

[0054] This construction method makes it possible to use a sheet-like body 2 that is easy to carry, and by attaching the fire-resistant material 1 having the flexible sheet-like body 2 to a long body L and moving it inverted, the fire-resistant material 1 can be installed on the surface W1 of the partition body W, making construction easy.

[0055] Furthermore, since the fireproofing material 1 has the flexible sheet-like body 2, even if the long body L is disposed at a position that is off the cross-sectional center of the through-hole W2, it is possible to make the sheet-like body 2 conform to the difference in diameter from the long body L to the inner circumferential surface of the through-hole W2 by, for example, bending a part of the sheet-like body 2. Thus, it is possible to flexibly accommodate the positional deviation of the long body L with respect to the through-hole W2.

[0056] Furthermore, since the position of the partition installation section 4 after construction is completed can be roughly aligned with the through hole W2, even if multiple through holes W2 are arranged side by side, it is possible to avoid the fire-resistant material 1 interfering with other through holes W2 adjacent to the through hole W2 that is the target of construction.

[0057] In addition, because the sheet-like body 2 is flexible and is attached by wrapping it around the long body L, one size of the fireproofing material 1 can be applied to through-holes W2 of various sizes within the range of possible deformation and arrangement of the sheet-like body 2. In addition, it can accommodate a variety of space factors (ratio of cross-sectional area) of the long body L to the through-hole W2.

[0058] Although an embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

[0059] For example, although the through hole W2 in the above embodiment is a round hole, it is not limited to this and may be a square hole having a polygonal cross-sectional shape.

[0060] Furthermore, the fireproofing material 1 in the above embodiment has a strip-like shape when viewed from above, but it may have a polygonal or elliptical shape that does not correspond to a strip-like shape.

[0061] Furthermore, it is not essential to wrap the fireproofing material 1 around the long body L. For example, the fireproofing material 1 may be formed in a substantially conical shape (megaphone shape) instead of a flat shape as in the above embodiment. In this case, it is preferable to form a slit in a part of the circumferential direction so that the long body L can be passed inside the substantially conical shape (megaphone shape).

[0062] Moreover, the sheet-like body 2 in the above embodiment is a sheet made of a noncombustible material, but is not limited thereto and may be a sheet made of a flame-retardant material. [Explanation of symbols]

[0063] 1 Fireproofing materials 2. Sheet-like body 21 First Face (Front) 22 Other side (back) 23 The First Realm 24 Other Areas 3 Mounting part 4. Partition installation section 5. Intermediate Body 51 Protrusion C Fireproof structure W partition body W1 Partition surface W2 Through hole L Long body R1 Installation start part R2 End of installation T Turning direction

Claims

1. A method for constructing a fire-resistant structure for a partition that divides a space, the partition having a through hole formed therein and an elongated body penetrating the through hole, comprising the steps of: an attachment process in which a fireproofing material having a sheet-like body having one surface and another surface opposite to the one surface and having fire resistance and flexibility is brought close to the through hole, and the attachment portion located on the side closer to the through hole is abutted against the elongated body, and the one surface is oriented radially inward while the fireproofing material is attached around the elongated body; a reversing step of moving the portion of the fireproofing material other than the mounting portion so that the one surface is reversed to a radially outward position; a partition installation step of installing a partition installation portion on a surface of the partition, the partition installation portion being spaced apart from the mounting portion in a planar direction; A method for constructing a fire-resistant structure.

2. At least a part of the fireproofing material has adhesiveness, The method for constructing a fire-resistant structure according to claim 1 , wherein in the attaching step, the adhesive portion is brought into contact with the elongated body.

3. The fireproofing material comprises a thermal expansion material having fire resistance, The method for constructing a fire-resistant structure according to claim 1 , wherein in the mounting step, the thermal expansion material is attached around the elongated body, or in the partition installation step, the thermal expansion material is installed on the surface of the partition.

4. The fireproofing material has a band-like shape in a plan view having a longitudinal direction and a width direction intersecting the longitudinal direction, In the mounting step, the fireproofing material is mounted in a wrapped manner so that the longitudinal direction is aligned with the circumferential direction of the elongated body, 2. The method for constructing a fire-resistant structure according to claim 1, wherein a width dimension of the fire-resistant material at an installation start portion in the installation step is formed larger than a width dimension of an installation end portion, and in the reversing step, the installation start portion is moved so as to be reversed at a position radially inward from the installation end portion.

5. A partition body that divides a space, the partition body having a through hole through which an elongated body is inserted, and a fireproofing material that is placed on the partition body, A sheet-like body having fire resistance and flexibility, an attachment portion located in one region of the sheet-like body and attached to the elongated body so as to abut on the elongated body when the sheet-like body is disposed on the partition body; A partition installation part is located in another area of ​​the sheet-like body different from the one area and is installed on a surface of the partition; A fire-resistant material comprising: an intermediate body provided on at least one of the mounting portion and the partition installation portion, and interposed between the sheet-like body and the elongated body or the surface of the partition.

6. The sheet-like body has one surface and another surface opposite to the one surface, The fireproofing material according to claim 5 , wherein the mounting portion is located on the one surface, and the partition installation portion is located on the other surface.

7. The fireproofing material according to claim 5 , wherein at least one of the mounting portion and the partition installation portion comprises a thermal expansion material having fire resistance.

8. The thermal expansion material is provided as the intermediate body, the thermal expansion material has an elongated shape, and is provided on the mounting portion, The fireproofing material according to claim 7 , wherein a portion of the thermal expansion material protrudes from the sheet-like body in a longitudinal direction.

9. The fireproofing material has a band-like shape in a plan view having a longitudinal direction and a width direction intersecting the longitudinal direction, The fireproofing material according to claim 5 , wherein a width dimension of the other longitudinal side is smaller than a width dimension of the one longitudinal side.

10. The fireproofing material according to claim 5 , wherein an edge shape of the partition installation portion of the fireproofing material is curved and protrudes outward.

11. A partition body that partitions a space and has a through hole; A long body passing through the through hole; a sheet-like body disposed on the partition and having one surface and another surface opposite to the one surface, the sheet-like body having fire resistance and flexibility; An attachment portion located on the one surface; A partition installation portion located on the other surface; It is composed of the attachment portion is attached to the elongated body such that a portion of the one surface where the attachment portion is located faces the elongated body, A fire-resistant structure in which the partition installation section is installed on the partition so that the portion of the other surface on which the partition installation section is located, or the portion of the one surface corresponding to the partition installation section, faces toward the partition.

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