Fire-resistant devices, fire-resistant structures, methods for constructing fire-resistant structures

Abstract

This invention provides fire-resistant devices that reduce construction man-hours, constructed fire-resistant structures, and methods for constructing fire-resistant structures. [Solution] The fire-resistant device 1 comprises a base portion 11 with a circumferential shape and a thermal expansion portion 12 made of a thermally expandable material, with a portion of it fixed to the base portion 11, wherein the thermal expansion portion 12 is one or more long strip-shaped bodies, or an assembly of multiple cylindrical bodies nested radially, and is arranged in a manner that allows for axial displacement in a direction perpendicular to the radial and circumferential directions while maintaining a connection state with the base portion 11.

Description

Technical Field

[0001] The present invention relates to a partitioning member for partitioning a space, and to a fireproofing measure, a fireproof structure, and a method for constructing a fireproof structure for a partitioning member in a state where a long member penetrates through a formed through hole.

Background Art

[0002] As an example of a fireproofing measure applied to the partitioning member, there is a tape-like one as described in Patent Document 1. The fireproofing measure contains a thermally expandable material. When using such a fireproofing measure, the fireproofing measure is wound around the outer periphery of the long member inside the through hole. Then, a fireproof structure is constructed by filling the space between the fireproofing measure and the inner surface of the through hole with mortar or rock wool.

[0003] However, according to such a method for constructing a fireproof structure, multiple layers of winding of the fireproofing measure around the long member and filling with mortar or the like were required, so the construction man-hours were large.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, an object of the present invention is to provide a fireproofing measure, a constructed fireproof structure, and a method for constructing a fireproof structure that can reduce the construction man-hours.

Means for Solving the Problems

[0006] The present invention relates to a fire-resistant device comprising a base having a circumferential portion, and a thermally expandable portion made of a thermally expandable material, with a portion of it fixed to the base, wherein the thermally expandable portion is a collection of one or more long strip-shaped bodies or multiple cylindrical bodies nested radially, and is arranged in a manner that allows for displacement in directions perpendicular to the radial and circumferential directions while maintaining a connection with the base.

[0007] With this configuration, by shifting the position of the thermal expansion section, fire-resistant measures can be implemented so that the space is covered by the thermal expansion section.

[0008] Furthermore, the thermal expansion portion may also have an operating portion that is operated to cause the displacement.

[0009] This configuration makes it easier to perform operations that cause positional misalignment using the control unit.

[0010] Furthermore, the thermally expanded portion may also be adhesive at least in the tip-side portion after movement related to the displacement.

[0011] This configuration allows for adhesive attachment to objects such as pipes and electrical cables that are targets for fire protection measures.

[0012] Furthermore, the thermal expansion portion may also include a spacer member that fills the gap between the inner diameter portion and the outer diameter portion after movement due to the displacement.

[0013] With this configuration, the spacer members can fill any gaps through which flames could potentially pass during a fire while the thermal expansion section is expanding.

[0014] The present invention also relates to a fire-resistant structure comprising a partition body for dividing a space, the partition body having a through hole formed therein, a long body penetrating the through hole, and a fire-resistant device provided on the partition body, wherein the fire-resistant device comprises a base that is installed on the surface of the partition body around the through hole or inside the through hole and has a shape that is circumferential, and a thermal expansion part that includes a thermally expandable material and is partially fixed to the base, wherein the thermal expansion part is one or more long strip-shaped bodies or an assembly of multiple cylindrical bodies nested radially, and is arranged along the long body in a state in which it is pulled out so as to be shifted in the axial direction which is perpendicular to the radial and circumferential directions while maintaining a connection state with the base.

[0015] With this configuration, by pulling out and positioning the thermal expansion section in a misaligned manner, the thermal expansion section can provide fire protection by covering the perimeter of the elongated body within the space of the through-hole.

[0016] The present invention also relates to a method for constructing a fire-resistant structure, comprising a partition body for dividing a space, the partition body having a through-hole formed therein, and a long body passing through the through-hole, wherein a thermal expansion portion containing a thermally expandable material is placed in the partition body, the partition body having a through-hole formed therein, and the thermal expansion portion being one or more long strip-shaped bodies, or an assembly of multiple cylindrical bodies nested radially, and the method for constructing a fire-resistant structure comprising: a partition body installation step of placing the thermal expansion portion at a radially extra-radial position relative to the long body, on the surface of the partition body around the through-hole, or inside the through-hole; and a pull-out step of pulling out the thermal expansion portion so as to be offset in the axial direction, which is perpendicular to the radial and circumferential directions, and arranging it along the long body.

[0017] With this configuration, by pulling out and positioning the thermal expansion section in a misaligned manner, the thermal expansion section can provide fire protection by covering the perimeter of the elongated body within the space of the through-hole. [Effects of the Invention]

[0018] By moving the thermal expansion part so as to be displaced, fireproof measures can be taken to cover the space by the thermal expansion part. Therefore, it is possible to provide a fireproof measure tool that can reduce the labor of construction, a constructed fireproof structure, and a method for constructing a fireproof structure.

Brief Description of the Drawings

[0019] [Figure 1] The fireproof measure tool according to an embodiment of the present invention is shown, where (A) is a side view and (B) is a plan view. [Figure 2] The state where the fireproof measure tool is installed in the partition body is shown, where (A) is a side view and (B) is a plan view. [Figure 3] The state where the thermal expansion part is pulled out from the state of FIG. 2 and fixed with a binding tool is shown, where (A) is a side view and (B) is a plan view. [Figure 4] It is a cross-sectional view taken along the line IV-IV of FIG. 3(B). [Figure 5] (A) and (B) are enlarged cross-sectional views of the main part showing the fireproof measure tool according to another embodiment of the present invention. [Figure 6] It is a longitudinal sectional view showing the fireproof measure tool according to another embodiment of the present invention.

Modes for Carrying Out the Invention

[0020] Next, the present invention will be described by taking an embodiment. The indication of directions (radial direction, circumferential direction, axial direction, vertical direction) in the following description is based on the directions in the state where the fireproof measure tool 1 is provided on the partition body W as shown in FIGS. 3(A) and (B). The three directions of the radial direction, circumferential direction, and axial direction are perpendicular to each other. In particular, the vertical direction is merely shown illustratively. In this embodiment, the axial direction is illustrated along the vertical direction, but the present invention is not limited to the configuration used in this direction.

[0021] The fireproof measure tool 1 of the present embodiment is used to construct a fireproof structure C by being installed on a partition body W. First, the partition body W, which is the object on which the fireproof measure tool 1 of the present embodiment is arranged and the fireproof structure C is constructed, will be described. The partition body W is a plate-shaped object provided to partition the space inside a building into a plurality of spaces, and the dimension in the plane direction is larger than the dimension in the thickness direction. For example, a wall or a floor corresponds to it. In the case of a wall, the space inside the building is partitioned into two spaces, the front side and the back side of the wall. Note that the "front side" and the "back side" indicate the directions when facing the surface W1 of the partition body W (for example, when seen from the worker constructing the fireproof structure C), and are also used in the following description of the directions in the fireproof measure tool 1. The partition body W may be solid or, for example, hollow and composed of two parallel plate-like bodies. In the partition body W, the surface facing the partitioned space is defined as the surface W1. This surface W1 is a flat surface. Note that the surface W1 may be a surface other than a flat surface (a curved surface or a surface with irregularities).

[0022] A through hole W2 penetrating in the thickness direction is formed in the partition body W. In each embodiment, the through hole W2 is assumed to be a round hole with a circular cross-sectional shape. Note that the through hole W2 is not limited to a circular shape and may be a polygonal hole or an irregularly shaped hole. A long body L penetrates from one space (for example, the front side) separated by the partition body W to the other space (for example, the back side) through this through hole W2. The long body L overlaps the central axis in the through hole W2 along the thickness direction of the partition body W and is often arranged along the central axis. The central axis is a virtual line passing through the diameter center of the through hole W2. In some cases, the long body L may be arranged off the central axis. The long body L is an object whose longitudinal dimension is larger than the radial dimension and can pass fluids, electricity, and electrical signals between the one space and the other space, and is, for example, a pipe or an electric wire. A plurality of long bodies L can pass through one through hole W2. At this time, the plurality of long bodies L can be bundled together in a grouped form by a bundling tool or the like. Note that in the following description, regardless of the number, it is simply referred to as the "long body L". The fireproof structure C is composed of the partition body W, the long body L, and the fireproof measure tool 1 arranged on the surface W1 of the partition body W so that the long body L penetrates through it.

[0023] The fire-resistant device 1 of this embodiment comprises a base portion 11 having a circumferential portion and a thermal expansion portion 12 partially fixed to the base portion 11. The base portion 11 is a cylindrical body. More specifically, it is a cylindrical body. The shape of this base portion 11 is such that the entire structure is the "circumferential portion" described above. The base portion 11 is a support material for assisting in the positioning of the thermal expansion portion 12 relative to the compartment body W (specifically, the through hole W2). For this reason, the base portion 11 itself does not need to be fire-resistant, and may, for example, burn or shrink in the event of a fire. The base portion 11 may also be made of a non-combustible material, for example, a steel sleeve can be used. The base portion 11 itself may also be thermally expandable. Furthermore, the base portion 11 may be composed of multiple parts (for example, two parts) combined together. The individual parts combined may have separate functions, for example, a rigid part and a part that fills the space relative to the compartment body W (through hole W2). Therefore, the base portion 11 may be configured by combining, for example, a rigid member (main body portion 11a shown in Figure 6) and a soft member such as a sponge (gap-filling portion 11b shown in Figure 6). The circumferential shape of the base portion 11 is such that it circles around the central axis of the through hole W2 in the partition body W to be installed, or the center position of one or more elongated bodies L. The base portion 11 may have irregularities formed along the circumferential direction as reinforcement to maintain its shape.

[0024] The thermal expansion section 12 is formed from a thermally expandable material. Various materials that expand when heated, such as expanded graphite, can be used as the thermally expandable material. The thermal expansion section 12 is formed, for example, by molding a material in which a thermally expandable material is compounded with resin. Therefore, the thermal expansion section 12 has thermal expandability. Generally available materials can be used as the thermally expandable material. The thermal expansion section 12 is a single long strip (tape). The thickness dimension of the thermal expansion section 12 is constant in the longitudinal direction. The thermal expansion section 12 is positioned relative to the base section 11 as shown in Figure 2(A), and is wound in a spiral shape in the axial view as shown in Figure 2(B). Due to this winding state, the thermal expansion section 12 is positioned in a state in which it can be shifted in the axial direction while maintaining a connection state with the base section 11. In this embodiment, it is positioned relative to the base section 11 in a state in which it can be shifted in the axial direction while partially overlapping. In this embodiment, as shown in Figure 2(A), the thermal expansion section 12 is shown protruding from the base 11 in its pre-extension state. However, the embodiment is not limited to this, and the thermal expansion section 12 may be housed in a way that prevents it from protruding from the base 11.

[0025] The thermal expansion portion 12 is fixed to the base portion 11 by fixing its longitudinal end (outer end) 121 to the inner surface of the base portion 11. This fixing may be done by adhesive or by fasteners such as metal fittings. The fixing of the thermal expansion portion 12 to the base portion 11 may be direct or indirect. As the one end (outer end) 121 of the thermal expansion portion 12 is fixed to the base portion 11 in this way, the portion including the other end (inner end) 122 of the thermal expansion portion 12 can be pulled out along the axial direction of the fire-resistant device 1, as shown in Figures 3(A) and 3(B). Note that Figure 3(A) is illustrated with an exaggerated shape for illustrative purposes. In the pulled-out state, the thermal expansion portion 12 has a spiral shape along the axial direction of the fire-resistant device 1, with the outer diameter being thicker and the inner diameter being thinner. In this spiral shape, the thermal expansion sections 12 overlap in some areas, so that there are no gaps in the radial direction between radially opposing portions of the thermal expansion sections 12. As will be described later, the thermal expansion sections 12 in this spirally extended state are fixed to the elongated body L, and the spiral shape is maintained.

[0026] Furthermore, the thermally expanded portion 12 is adhesive at least in the tip portion after movement due to the displacement. In this embodiment, the inner surface of one end (outer end) 121 in the longitudinal direction of the thermally expanded portion 12 is adhesive. This makes it possible to attach the fire-resistant device 1 to one of the objects to which it is attached (in this embodiment, a long body L) by adhesive (at least as temporary fastening).

[0027] Furthermore, it is desirable that the portion of the thermal expansion portion 12 other than the longitudinal end (outer end) 121 does not have adhesive properties so as not to interfere with the aforementioned misalignment. To achieve this, for example, the thermal expansion portion 12 can be formed from a non-adhesive material, a resin or metal sheet can be attached to the surface of the thermal expansion portion 12, a thermal expansion material can be filled into a resin or other bag to form the thermal expansion portion 12, or a coating can be applied to the surface by laminating a resin layer or the like.

[0028] The thermal expansion section 12 has an operating section 13 that is operated to cause displacement. In this embodiment, the operating section 13 is a small sheet-like piece that protrudes in the width direction of the thermal expansion section 12 at the other end (inner end) 122 of the thermal expansion section 12, and is held by an operator such as a worker, and a force is applied in the direction of pulling the thermal expansion section 12 away from the base 11. However, the form of the operating section 13 is not limited to this. For example, the adhesiveness can be removed from a part of the thermal expansion section 12, and that part can be made into the operating section 13. This operating section 13 makes it easier to operate the thermal expansion section 12 to cause displacement, as described above.

[0029] With the fire-resistant device 1 configured as described above, by moving the thermal expansion part 12 to shift its position, fire-resistant measures can be applied so that the thermal expansion part 12 covers the space. Therefore, the effort required for construction can be reduced.

[0030] By using the fire-resistant device 1, a fire-resistant structure C comprising a compartment W, a long body L, and the fire-resistant device 1 can be constructed. In this fire-resistant structure C, the thermal expansion portion 12 is positioned along the long body L, pulled out to the front of the compartment W, so as described above, that it is offset in the axial direction, which is perpendicular to the radial and circumferential directions, while partially overlapping. In this fire-resistant structure C, in the event of a fire, the expanded thermal expansion portion 12 covers and closes the space between the through-hole W2 of the compartment W and the long body L, thereby preventing flames from spreading beyond the compartment W between multiple spaces within the building. If the long body L has parts (such as covering material) that are burned or contracted by the heat of the fire, the expanded thermal expansion portion 12 will fill the space created by the burning or contraction. Furthermore, in the fire-resistant structure C, the thermally expanded portion 12 is extended along the elongated body L relative to the compartment W, so that it covers the space around the through-hole W2 in a portion away from the surface W1 of the compartment W and the through-hole W2. As a result, the expanded thermally expanded portion 12 in the portion away from the through-hole W2 blocks the flames on the front side of the compartment W, making it even safer from a fire prevention standpoint.

[0031] Next, a method for constructing the fire-resistant structure C will be described. This construction method, as an example, includes at least a compartment installation step and an extraction step. The compartment installation step is a step of installing the thermal expansion part 12 at a position outside the diameter relative to the elongated body L, on the surface W1 of the compartment W around the through hole W2, or at least a part of it inside the through hole W2. When constructing the fire-resistant structure C using the fire-resistant device 1 of this embodiment, the base 11 is fixed to the compartment W. In this embodiment, the thermal expansion part 12 is installed along with the installation of the base 11 to the compartment W. After installation, the thermal expansion part 12 does not have to be inserted into the through hole W2 (Figures 2(A) and 4), or it may be inserted (Figure 6). The base 11 may be fixed with part or all of it inserted into the through hole W2 (Figure 6), or it may not be inserted at all and the fixation may be done on the surface W1 around the through hole W2 in the compartment W (Figures 2(A) and 4). This fixing may be done by adhesive or by fasteners such as metal fittings. The base 11 may be in close contact with the partition W, or there may be a gap (space) between them. When the base 11 is in close contact with the partition W, for example, the base 11 may have a main body 11a and a gap-filling portion 11b provided on the outer circumference of the main body 11a, and the gap-filling portion 11b may be configured to abut the inner surface of the through-hole W2. The fire-resistant device used in this construction method may not have a base 11, and in such a configuration, the thermal expansion portion 12 can be installed in the through-hole W2 directly or via a member other than the fire-resistant device.

[0032] The pulling-out process is a process performed after the partition installation process in which the thermal expansion section 12 is pulled out so that it overlaps in some parts and is shifted in directions perpendicular to the radial and circumferential directions, and positioned along the elongated body L. In the fire-resistant device 1 of this embodiment, the operator can hold the operating section 13 and pull out the thermal expansion section 12 along the axial direction, thereby positioning the thermal expansion section 12 along the elongated body L on the front side of the partition W. With the thermal expansion section 12 pulled out, the base 11 is located on the far side and the thermal expansion section 12 is located on the near side, relative to the partition W. Since the base 11 is fixed, it does not move relative to the partition W even when the pulling-out is performed.

[0033] Furthermore, as shown in Figure 4, when the thermal expansion portion 12 is extended, in a radial cross-sectional view, it takes on a shape that causes it to tilt inward at the end of the extension, that is, the side closer to the other end (inner end) 122 in the longitudinal direction. Because of this shape, the end of the extension at the inwardly tilted portion can be brought closer to the elongated body L. As a result, the thermal expansion portion 12 can be aligned with the elongated body L, so that the thermal expansion portion 12 that expands during a fire can more reliably seal the space between the through hole W2 of the compartment W and the elongated body L.

[0034] A fixing process can be carried out after the extension process. This process involves securing the tip of the thermal expansion part 12 to the elongated body L using a fastening device 2 such as a cable tie, wire, or adhesive tape. This fixes the thermal expansion part 12 to the elongated body L while keeping it in the extended state. Alternatively, the thermal expansion part 12 may be bonded to the elongated body L by using the adhesive properties of the thermal expansion part 12 and pressing its tip against the elongated body L.

[0035] By constructing the device including the steps described above, the thermal expansion portion 12 is pulled out and positioned in a misaligned manner, thereby providing fire protection by covering the space within the through-hole W2 around the elongated body L.

[0036] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

[0037] For example, regarding the through-hole W2, the configuration shown in Figure 2(A), etc., was one in which the through-hole penetrates the partition W in the vertical direction. However, the direction in which the through-hole W2 is formed is not limited to this, and it may be formed to penetrate the partition W in the horizontal direction, or in a direction inclined with respect to both the vertical and horizontal directions.

[0038] Furthermore, the elongated body L may be passed through the through-hole W2 after the fire-resistant device 1 is installed in the partition W, or it may be already passed through the through-hole W2 before the fire-resistant device 1 is installed in the partition W.

[0039] Furthermore, although the base 11 in the above embodiment was a cylindrical body, the shape of the base 11 is not particularly limited. Even if it is a cylindrical body, the radial cross-sectional shape is not a perfect annular shape, but can be a shape with a part missing. For example, it may be C-shaped or U-shaped when viewed in the axial direction. Also, for example, if the elongated body L has already passed through the through hole W2, a slit can be formed in a part of the cylindrical body along the longitudinal direction of the elongated body L. This allows the elongated body L to be inserted into the radially inner side of the base 11 through the slit. Regarding the thermal expansion section 12, in the case of the shape of the above embodiment, the elongated body L can be introduced into the radially inner side along the direction of the spiral-shaped space of the thermal expansion section 12. Furthermore, if the thermal expansion section 12 is an assembly of multiple cylindrical bodies nested radially as shown below, a slit similar to that of the base 11 can be formed in each cylindrical body.

[0040] Furthermore, the thermal expansion section 12 may be an assembly of multiple cylindrical bodies nested radially. The term "nested" refers to a state where a relatively smaller diameter cylindrical body is inserted into the radially larger diameter cylindrical body. However, in this case, the cylindrical bodies adjacent to each other radially, both inside and outside, are connected by the formation of stoppers or the like, and measures must be taken to prevent them from being pulled out beyond the overlapping state. The stoppers can be, for example, planar parts connected to the inner and outer cylindrical bodies, like those found in a commonly known foldable soft resin cup. Alternatively, the stoppers can be expandable and contractible bellows-like parts. The stoppers may be made of the same material as the cylindrical bodies, or of a different material. If made of a different material, they may be, for example, metal. Furthermore, the thermal expansion section 12 may be a combination of multiple long strip-shaped bodies joined together longitudinally.

[0041] In the above embodiment, the thermal expansion portion 12 was configured to be pulled out from the inner end side of the spiral winding state. However, conversely, the thermal expansion portion 12 may be configured to be pulled out from the outer end side of the winding state. Also, in the above embodiment, the side that is first fixed by the thermal expansion portion 12 was the side of the partition body W (fixed via the base portion 11), but conversely, it may be the side of the elongated body L. In this case, the base portion 11 can be fixed to the elongated body L. In short, the thermal expansion portion 12 should be provided so as to connect the two objects to be attached (in this embodiment, the partition body W and the elongated body L).

[0042] Furthermore, in the above embodiment, the thickness and width dimensions of the thermal expansion section 12 were constant in the longitudinal direction. However, it is not limited to this, and the thickness dimension may change along the longitudinal direction, for example, so that one end is smaller (thinner) and the other end is larger (thicker), and the width dimension may change along the longitudinal direction, for example, so that one end is smaller (narrower) and the other end is larger (wider). Also, the thickness and width dimensions of the thermal expansion section 12 may repeatedly increase and decrease in the longitudinal direction, for example, in a corrugated shape. However, it is preferable for the thickness and width dimensions of the thermal expansion section 12 to be constant in the longitudinal direction in terms of ease of use during use and convenience during manufacturing.

[0043] Furthermore, as shown in Figure 5(A), the thermal expansion portion 12 may have a spacer member 14 that fills the gap between the inner diameter portion and the outer diameter portion (between radially opposing surfaces) after movement due to displacement. With this configuration, the spacer member 14 can at least temporarily fill any gaps through which flames could potentially pass during a fire while the thermal expansion portion 12 is expanding. The material of the spacer member 14 is not particularly limited. The spacer member 14 can also be formed inseparably as part of the thermal expansion portion 12. For example, as shown in Figure 5(B), protrusions or fold-like portions formed on the surface of the thermal expansion portion 12 can function as the spacer member 14. The spacer member 14 can also be provided on the inner surface of one end (outer end) 121 in the longitudinal direction of the thermal expansion portion 12 to fill the gap between the thermal expansion portion 12 and the elongated body L.

[0044] Furthermore, the thermal expansion section 12 may have markings or color-coded sections formed on a visible surface to serve as a guide for the work of shifting its position while partially overlapping it.

[0045] Furthermore, regarding the construction method of the fire-resistant structure C, the thermal expansion section 12 can also be directly installed on the partition W. In this case, the fire-resistant device 1 used does not need to have a base section 11, and can consist of, for example, only the thermal expansion section 12. [Explanation of Symbols]

[0046] 1. Fire-resistant equipment 11 Base 12 Thermal expansion section 13 Control section 14 Spacer member C Fireproof structure W Compartment W1 Surface of the partition W2 Through Hole L-shaped long body

Claims

1. A base having a shape that extends in the circumferential direction, The device comprises a thermally expandable portion containing a thermally expandable material, a portion of which is fixed to the base, The aforementioned thermal expansion portion is A long, strip-shaped body, or an aggregate of multiple cylindrical bodies nested radially, A fire-resistant device positioned in such a manner that it can be shifted axially, which is perpendicular to the radial and circumferential directions, while maintaining a connection state with the base.

2. The fire-resistant device according to claim 1, wherein the thermal expansion portion has an operating portion that is operated to cause the displacement.

3. The fire-resistant device according to claim 1 or 2, wherein the thermally expanded portion has adhesive properties at least in the tip-side portion after movement related to the displacement.

4. The fire-resistant device according to claim 1 or 2, wherein the thermal expansion portion has a spacer member that fills the gap between the inner diameter portion and the outer diameter portion after movement due to the displacement.

5. A partition body for dividing a space, comprising a partition body having a through hole formed therein, A long body that penetrates the aforementioned through hole, A fire-resistant structure comprising a fire-resistant device provided in the partition, The aforementioned fire-resistant device is A base portion is installed on the surface of the partition body around the through hole or inside the through hole, and has a shape that extends in the circumferential direction, The device comprises a thermally expandable portion containing a thermally expandable material, a portion of which is fixed to the base, The aforementioned thermal expansion portion is An aggregate consisting of one or more long strip-shaped bodies, or multiple cylindrical bodies nested radially, A fire-resistant structure positioned along the elongated body, while maintaining its connection to the base, and being pulled out so as to be misaligned in the axial direction, which is perpendicular to the radial and circumferential directions.

6. A method for constructing a fire-resistant structure, comprising a partition body for dividing a space, wherein the partition body has through holes formed in it, and a long body that penetrates the through holes, and wherein a thermally expanding portion containing a thermally expandable material is placed in the partition body, The thermal expansion section is a collection of one or more long strip-shaped bodies, or a collection of multiple cylindrical bodies nested radially. A partition installation step in which the thermal expansion portion is located at an outer diameter position relative to the elongated body, on the surface of the partition body, around the through hole, or inside the through hole, A drawing step involves drawing out the thermal expansion portion so that it is displaced in the axial direction, which is perpendicular to the radial and circumferential directions, and arranging it along the elongated body. A method for constructing a fire-resistant structure, which involves carrying out the following steps in order.

Images