JP6653166B2 - Refractory material sheet, penetration structure of building fire compartment, construction method of refractory material - Google Patents

Description

  The present invention particularly relates to a fireproof sheet, a structure for penetrating a fireproof section of a building, and a method of constructing a fireproof material, which is particularly suitable for a penetrating portion of a long object in a wall or a floor located at a boundary of a fireproof section of a building.

  In the wall or floor located at the boundary of the building fire prevention section, fireproof material is used to fill the gap between the through hole formed in the wall or floor and the long object, such as piping and wiring. Used. The refractory material expands by the heat of the building at the time of fire, thereby filling the space of the through hole (including the space generated by burning out the long object). Thereby, it is possible to prevent the spread of fire beyond the boundary of the building fire protection section. A fireproof structure using such a fireproof material is described in, for example, Patent Document 1. The refractory structure described in Patent Document 1 is for a case where a single synthetic resin pipe penetrates.

  Here, a plurality of long objects may penetrate the boundary of the building fire compartment, and a fireproof structure in this case is described in Patent Document 2. In this fireproof structure, it is disclosed that a fireproof material is wound around a bundle of a plurality of long objects (pipes for an air conditioner). However, the space having a substantially V-shaped cross section generated by the adjacent long object cannot be filled with the wound refractory material. When the refractory material is wrapped in this way, there is a gap in a state in which the refractory material has not expanded, and smoke from the fire (especially at the beginning of the fire) passes through the gap and crosses the boundary of the building fire compartment. It is not preferable because it moves.

  In this regard, in the fire-resistant structure of Patent Document 2, the above-mentioned space having a substantially V-shaped cross section is filled with a shredded fire-resistant material. However, such a measure has a problem in that it takes time and effort to cut the refractory material into pieces each time, and the number of man-hours at the construction site increases.

JP-A-2002-119608 (FIG. 4) JP 2012-149670 A (FIG. 4)

  Therefore, the present invention is suitable for a case where a plurality of long objects penetrate a boundary of a building fire protection section, and has an object to provide a fire-resistant material sheet, a penetration structure of a building fire protection section, and a method of constructing a fire-resistant material that is easy to perform. I do.

The present invention is a refractory material sheet that can be wound around an outer periphery of a long object aggregate in which a plurality of long objects are gathered so as to be adjacent to each other, and a base portion and a winding direction in the refractory material sheet when the winding is performed. A plurality of deformed pieces extending from the base to the end in the width direction along the width direction that is a direction intersecting with the application direction, and a plurality of slits extending in the width direction are arranged in the winding direction. And a plurality of deformed pieces formed, further comprising an adhesive layer formed on a surface that becomes an inner side at the time of winding, or the plurality of the refractory material sheet wound on the long object aggregate. The refractory sheet is used together with a reduced diameter member for reducing the diameter of at least a part of the deformed piece from the outside, and the dimension of the deformed piece in the width direction of the refractory material sheet is larger than the dimension in the winding direction.

  According to this configuration, the dimension of the deformed piece in the width direction of the refractory sheet is larger than the dimension in the winding direction. For this reason, when winding the refractory material sheet around the outer periphery of the long object aggregate, each deformed piece is easily deformed, and each deformed piece can be easily made to conform to the outer periphery of the long object aggregate. Therefore, the deformed piece can be located in a space generated between adjacent long objects.

Further, each deformed piece is formed by winding the refractory material sheet around the elongated object aggregate, and then, in a state where the plurality of deformed pieces are reduced in diameter , the other deformed pieces and the diameter of the elongated object aggregate. It is also possible to have overlapping portions that overlap in directions.

  According to this configuration, when the refractory material sheet is arranged along the outer periphery of the long object aggregate, the overlapping portions of the plurality of deformed pieces overlap in the radial direction, so that the distance between the refractory material sheet and the long object aggregate is increased. A tight winding is possible so that no gap is formed in the space.

In addition, each deformed piece is twisted in a circumferential direction of the long object aggregate in a state where the refractory material sheet is wound around the long object aggregate and the plurality of deformed pieces are reduced in diameter. It can also have a twist.

  According to this configuration, when the refractory material sheet is made to extend along the outer periphery of the elongated object aggregate, the twisted portions in the plurality of deformed pieces are twisted in the circumferential direction, so that each deformed piece is oriented in the circumferential direction of the elongated object aggregate. Easy to follow.

Further, the long object aggregate is formed so as to form a groove portion having a substantially V-shaped cross section between adjacent long objects, and the torsion portion is configured to connect the refractory material sheet to the long object. After being wound around the object assembly , the plurality of deformed pieces may be configured to be twisted along the outer peripheral surface of each long object in the groove-shaped portion in a state where the diameter of the plurality of deformed pieces is reduced .

  According to this configuration, since the torsion portion is positioned along the inner surface of the groove portion between the adjacent long objects, the generation of a gap between the long object assembly and the refractory material sheet can be suppressed. .

Also, the present invention provides a through-hole formed in a wall or a floor located at a boundary of a building fire prevention section, a plurality of long objects are assembled so as to be adjacent to each other, and a long object aggregate passing through the through hole, A refractory material sheet wound around the outer periphery of the long object aggregate, and a reduced diameter body, the refractory material sheet is a base portion, in the refractory material sheet, in a winding direction that is a direction at the time of the winding. a plurality of deformable pieces to extend to the end portion in the width direction from the base portion along a width direction is a direction intersecting against, formed by slits extending in the width direction are arranged a plurality, in directing the wound comprising a plurality of deformable strips, and the reduced径体is the long product the plurality of at least a building fire partially Ru reduced in diameter from the outside in a modified piece of the refractory material sheet in the state wound around the assembly This is a section penetrating structure.

  According to this configuration, when the refractory material sheet is wound around the outer periphery of the long object aggregate, the deformed piece is easily made to conform to the outer periphery of the long object aggregate, and the reduced diameter member is used for the long object aggregate. Thus, the refractory sheet can be securely fixed in a reduced diameter state.

  Further, the reduced diameter body may be wound around the outer periphery of the plurality of deformed pieces.

  According to this configuration, the plurality of deformed pieces are reduced in diameter by winding the reduced diameter body. For this reason, a plurality of deformation pieces can be easily made to follow the outer periphery of the long object aggregate.

  Further, the present invention is a refractory material sheet used for the penetration structure of the fire prevention section of the building.

Further, the present invention is a base, and a plurality of deformed pieces extending from the base to an end in the width direction, wherein a plurality of slits extending in the width direction are formed by being arranged in a direction intersecting with the width direction. A plurality of deformed pieces, and a refractory material sheet comprising: This is a method of applying a refractory material that is wound along the circumferential direction of the object assembly to reduce the diameter of the plurality of deformed pieces.

  According to this method, by reducing the diameter of the plurality of deformed pieces, it is possible to suppress the generation of a gap between the long object aggregate and the refractory material sheet.

  Further, after winding the refractory material sheet around the elongated object aggregate, the refractory material sheet can be slid along the direction in which the elongated object aggregate extends.

  According to this method, the refractory material sheet can be easily arranged at a desired position on the boundary of the building fire protection section by the slide.

The front Symbol refractory material of the seat slide, the base is the front, the plurality of deformable strips can also be such that the rear.

  According to this method, the plurality of deformed pieces are slid in the backward direction, so that the plurality of deformed pieces are disturbed by the slide so as to hinder the narrowing of the deformed pieces toward the exposed surface of each long object. Can be suppressed.

  ADVANTAGE OF THE INVENTION According to the structure of this invention, a deformation | transformation piece can be located in the space produced between adjacent long objects. Therefore, it is suitable when a plurality of long objects penetrate the boundary of the building fireproof section, and can provide a fireproof material sheet, a penetration structure of the building fireproof section, and a fireproof material construction method that are easy to perform.

It is a top view showing the refractory material sheet concerning one embodiment of the present invention. It is a perspective view showing the state where the same refractory material sheet was wound around a long thing aggregate. FIG. 3 is a perspective view showing a state in which a fixing tape is attached to the refractory sheet in the state shown in FIG. 2. FIG. 4 is a perspective view showing a state where a squeeze tape is wound around the refractory sheet in the state shown in FIG. 3. (A) is a sectional view showing a state in which the refractory material sheet is wound around a long object aggregate, and (B) is a sectional view showing a state in which deformed pieces are narrowed down. The deformed pieces in the refractory sheet are schematically shown, (A) shows a state in which the deformed pieces are not deformed, (B) shows a state in which the deformed pieces are overlapped, and (C) shows a state in which some deformed pieces are twisted. Is shown. The relation between the refractory material sheet wound around a long object aggregate and the wall of the building is shown, (A) shows a state where the refractory material sheet is located outside the wall, and (B) shows the inside of the wall. Shows the state where the refractory sheet is located. (B) (D) is shows another embodiment of a refractory material sheet, (A) (C) is shows the reference example.

  Next, the present invention will be described with reference to an embodiment.

  The refractory material sheet 1 of the present embodiment is a sheet-like body that can be wound around the outer periphery of a long object aggregate Ca in which a plurality of long objects C are arranged adjacent to each other. Examples of the long object C include, for example, a refrigerant pipe and a multi-system electric cable for an air conditioner, which are provided with a heat insulation coating, and a through hole formed in a wall W or a floor located at a boundary of a building fire protection section. Through. FIGS. 7A and 7B show an example in which the long object aggregate Ca penetrates the wall W. FIG. In this embodiment, four long objects C... C are assembled to form a long object aggregate Ca, but the number of long objects C. Further, as shown in FIG. 5A, the long object aggregate Ca is assembled so as to form a substantially V-shaped groove-shaped portion Cg curved in cross section between the adjacent long objects C. are doing.

  This refractory material sheet 1 is formed by extruding a vinyl chloride elastomer containing thermally expandable graphite into a sheet. By using the vinyl chloride-based elastomer, it is possible to form a flexible sheet body suitable for winding around the long aggregate Ca. In addition, the material which comprises the refractory material sheet 1 is not limited to the thing of this embodiment, As long as it contains a heat-expandable material such as heat-expandable graphite, for example, various materials such as a thermoplastic resin are used. be able to. However, it is preferable that the material is not a material that hinders forming into a sheet shape, but is a material that retains flexibility to be wound around the long object aggregate Ca and is not easily broken. When a vinyl chloride elastomer as in this embodiment is used, a stiff (having appropriate rigidity) sheet-like body can be formed, so that it is easy to wind around the long aggregates Ca and has a strong fire resistance. It can be a material sheet 1. The method for forming the sheet is not limited to the extrusion molding, and various methods such as injection molding can be adopted.

  FIG. 1 shows an example of a state when the refractory sheet 1 is used. The refractory material sheet 1 in this state is flat and rectangular in plan view, and includes a base 11 occupying a relatively large area on the right in the figure and a plurality of deformed pieces occupying a relatively small area on the left in the figure. 12 ... 12 are provided. The base 11 is a flat part. Each deformed piece 12 intersects (orthogonal direction in the present embodiment) the direction of winding Dr of the refractory material sheet 1 (the direction at the time of winding around the elongated object aggregate Ca and the longitudinal direction in FIG. 1). Is an elongated rectangular portion extending from the base 11 to the left in the drawing along the width direction Dw. Each of the deformable pieces 12 has the same shape, and a plurality of slits 13 extending in the width direction Dw in the refractory material sheet 1 are arranged at regular intervals in the winding direction Dr, so that two slits 13 adjacent in the winding direction Dr are formed. , 13 are formed. In this manner, the plurality of deformed pieces 12... 12 are formed only by cutting a partial region of the refractory material sheet 1 to form the plurality of slits 13. A configuration for filling can be easily formed.

  Each deformation piece 12 is restrained with respect to the base 11 at a connection portion 12 a with the base 11, but an edge 12 b (left edge in FIG. 1) far from the base 11 and a side edge facing the slit 13. 12a can move freely with respect to the base 11 and other deformed pieces 12 because the refractory material sheet 1 has flexibility. Therefore, each deformable piece 12 can be deformed with respect to the base 11. The dimension 12W of each deformed piece 12 in the width direction (here, the width direction Dw in the refractory material sheet 1) is larger than the dimension 12L in the winding direction Dr. For this reason, the degree of freedom of deformation increases as the deformed pieces 12 move away from the base 11, so that when the refractory material sheet 1 is wound around the outer periphery of the long object aggregate Ca, each deformed piece 12 is easily deformed. The deformed piece 12 can easily be made to follow the outer periphery of the long object aggregate Ca.

  The refractory material sheet 1 of the present embodiment is distributed (sold and the like) in a state of being continuously wound in a roll shape in the winding direction Dr (the longitudinal direction in the state shown in FIG. 1). An operator cuts the product to an appropriate longitudinal dimension at the site and uses it. However, the present invention is not limited to this, and may have a rectangular shape as shown in FIG. 1 from the time of distribution.

  As shown in FIG. 2, the refractory material sheet 1 is wound around the elongated object aggregate Ca such that the extending direction of each deformable piece 12 is along the extending direction of the elongated object aggregate Ca. FIG. 6A is a cross-sectional view showing only a plurality of deformed pieces 12 in this state. Then, as shown in FIG. 4, the squeezing tape 22 as a reduced diameter body is wound from the outside of the plurality of deformed pieces 12... 12 so that the plurality of deformed pieces 12. Let me do. At this time, the plurality of deformed pieces 12... 12 overlap each other as shown in FIG. 6 (B) or partially twist as shown in FIG. 6 (C).

  From this, each deformed piece 12 may overlap with the other deformed pieces 12 in the radial direction of the long object aggregate Ca in the state in which the refractory material sheet 1 is wound, as shown in FIG. It can be said that it has an overlapping portion 121 which is a possible portion. The overlapping portion 121 may eventually overlap or not overlap in the wound state of the refractory material sheet 1. For this reason, as shown in FIG. 6B, the ends of each deformed piece 12 in the winding direction Dr are not limited to overlap, and only one end of each deformed piece 12 in the winding direction Dr may overlap. Further, at a certain portion in the width direction Dw of the refractory material sheet 1, for example, the entire winding direction Dr of each deformed piece 12 may overlap.

  In the configuration in which each deformed piece 12 has the overlapping portion 121 as described above, the overlapping portion 121 of the plurality of deformed pieces 12... The refractory material sheet 1 can be densely wound so that no gap is formed between the refractory material sheet Ca and the scale assembly Ca.

  Further, it can be said that each deformed piece 12 has a twisted portion 122 that is twisted in the circumferential direction of the long object aggregate Ca so as to be in a state shown in FIG. 6C in a state where the refractory material sheet 1 is wound. . The torsion portion 122 is, for example, a region near the connection portion 12a with the base portion 11 in each deformed piece 12, and is a groove portion having a substantially V-shaped cross section formed between adjacent elongated objects C. When each deformable piece 12 is deformed along Cg (see FIG. 5A), the deformed piece 12 behaves in such a manner as to be shifted in the rotational direction with respect to the extended position of the base 11. Due to this behavior, as shown in FIG. 5B, the torsion portion 122 follows the outer peripheral surface of each long object C in the groove portion Cg in a state where the refractory material sheet 1 is wound around the long object aggregate Ca. Twist like so. FIG. 6C shows a state in which the two deformed pieces 12, 12 adjacent to each other in the winding direction Dr are twisted in opposite directions to form a substantially V shape. By deforming each deformable piece 12 in this manner, each deformable piece 12 can be easily made to follow the groove-shaped portion Cg in the long object aggregate Ca.

  In such a configuration in which each deformable piece 12 has the twisted portion 122, the twisted portion 122 is formed along the inner surface (the “V” -shaped inner surface) of the groove-shaped portion Cg between the adjacent elongated objects C. , It is possible to suppress the generation of a gap between the long object aggregate Ca and the refractory material sheet 1.

  As described above, a part of the plurality of deformed pieces 12... 12 overlaps each other (FIG. 6B), and the other part becomes twisted (FIG. 6C). The state is as shown in FIG. 5B with respect to the scale aggregate Ca. By deforming the plurality of deformable pieces 12 in this manner, the deformable pieces 12 can be positioned in the space of the groove-shaped portion Cg generated between the adjacent elongated objects C. That is, the space is filled or at least reduced by the deformable pieces 12. For this reason, in the state where a fire has occurred but the refractory material sheet 1 has not yet expanded, there is no gap or only a small gap with the long object aggregate Ca, so that the smoke at the time of the fire causes the boundary of the building fire protection compartment It is possible to effectively suppress the movement beyond. In addition, the gap between the long object aggregate Ca and the refractory material sheet 1 is confirmed by the degree of light transmission visible to the worker when the worker looks through the through hole Wh of the wall W from one side to the other side. it can.

  Next, a description will be given of matters other than those described above with respect to the structure for penetrating a building fire protection section using the refractory material sheet 1. This penetrating structure includes a drawing tape 22 as a reduced diameter body in addition to the refractory material sheet 1. The squeezing tape 22 is used for reducing the diameter of at least a part of the refractory material sheet 1 wound around the long object aggregate Ca from the outside as described above. In the present embodiment, as shown in FIG. 4, by being wound around the outer periphery of the plurality of deformed pieces 12... 12, the state shown in FIG. 5A is changed to the state shown in FIG. In addition, the diameter of each deformed piece 12 can be reduced. By using the squeezing tape 22, the refractory material sheet 1 can be reliably fixed to the long aggregated material Ca in a reduced diameter state.

  Next, an example of a method for constructing a refractory material using the refractory material sheet 1 will be described. This construction method is a method of winding the refractory material sheet 1 along the circumferential direction of the long object aggregate Ca to reduce the diameter of the plurality of deformed pieces 12. First, as shown in FIG. 2, the refractory material sheet 1 is wound around a long aggregated material Ca. Thereafter, as shown in FIG. 3, the fixing tape 21 is attached to the boundary of the winding on the base 11 to maintain the wound state. Next, as shown in FIG. 4, a squeezing tape 22 is wound from outside the plurality of deformed pieces 12. These steps are performed outside the wall W as shown in FIG.

  After the refractory material sheet 1 is wound around the long object aggregate Ca as described above, the refractory material sheet 1 is slid along the direction in which the long object aggregate Ca extends, as shown in FIG. It can be located inside the wall W (through hole Wh). By sliding the refractory material sheet 1 in this manner, the refractory material sheet 1 can be easily arranged at a desired position on the boundary of the building fire protection section. After the state shown in FIG. 7 (B), a portion of the gap between the inner surface of the through hole Wh and the elongated aggregate Ca that is not filled with the refractory material sheet 1 is filled with mortar, caulking material, or the like. Fill with. In addition, it is not necessary to fill the entire space of the gap, and it is sufficient that one of the through holes Wh is filled to the extent that it cannot be seen through. Then, if necessary, a cover that covers the through hole Wh from the outside of the wall W is attached to complete the construction. As described above, the use of the refractory sheet 1 of the present embodiment enables quick construction. Note that, for example, in the case of applying the procedure of winding the squeezing tape 22 after sliding, as shown in FIG. 7 (B), it is not completely located inside the wall W (through hole Wh), and a part of the refractory material sheet 1 May be kept outside the wall W.

  When the slide is performed in this way, as shown in FIGS. 7A and 7B, the plurality of deformed pieces 12... 12 are located at the ends of the refractory sheet 1 in the width direction Dw, and the slide is moved to the base 11. Is desirably forward, and the plurality of deformable pieces 12... 12 are desirably rear. In this manner, by sliding the plurality of deformable pieces 12... 12 in the backward direction, it is possible to prevent the plurality of deformable pieces 12... 12 from narrowing down to approach the exposed surface of each long object C by the slide. Can be suppressed.

  The embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention.

  For example, the state when the refractory material sheet 1 of the embodiment is used is rectangular in plan view as shown in FIG. 1, but is not limited thereto, and may be trapezoidal or triangular. Further, the refractory material sheet 1 of the above embodiment is a solid sheet shape, but may be a net shape, for example. If the method of use is to specialize in, for example, filling gaps, the refractory material sheet 1 may not have thermal expansion properties.

Further, the refractory sheet 1 of the embodiment, as shown in FIG. 1, a plurality of deformable strips 12 ... 12 were located in the end in the width direction Dw, deformed pieces 12 ... 12 of multiple For example the formed two rows so as to be lined up in the width direction Dw, can also be positioned at both ends in the width direction Dw, as shown in FIG. 8 (B). By forming a plurality of rows of the plurality of deformed pieces 12,..., The space of the groove-shaped portion Cg is filled or reduced at a plurality of positions in the extending direction of the long object aggregate Ca. Therefore, the space can be more reliably eliminated than in the refractory material sheet 1 in which the plurality of deformable pieces 12 are formed in one row. In addition, as a reference example other than the embodiment, as shown in FIG. 8A, a form not located at the end, such as being located at the center in the width direction Dw, or as shown in FIG. It can also be located at an intermediate portion in the width direction Dw.

  Further, in the refractory material sheet 1 of the embodiment, the plurality of deformable pieces 12 are formed on the longer sides of the substantially rectangular shape, but may be formed on the shorter sides. Further, the length of the slit 13 can be changed in the winding direction Dr without being constant. Further, as shown in FIG. 8 (D), a plurality of deformable pieces 12... 12 may be formed only partially in the winding direction Dr, and may be formed as an extension base 11 a in which the slits 13 are not formed in other portions. . When the refractory material sheet 1 having such a shape is wound, for example, a portion where a plurality of deformed pieces 12... 12 are formed can be wound inside, and the extension base 11a can be wound outside. By doing so, for example, the bending of each deformed piece 12 outward can be suppressed by the extension base 11a.

  Further, the shape of each deformed piece 12 is an elongated rectangular shape in the above-described embodiment, but may be, for example, a triangular shape or a trapezoidal shape which becomes thinner toward the tip, or a semicircular shape at the tip. it can. In addition, since the slits 13 are not formed at regular intervals in the winding direction Dr, the dimension of the deformable piece 12 in the winding direction Dr (the dimension 12L in the embodiment) may be non-uniform.

  Further, by forming perforations extending in the width direction Dw, the refractory material sheet 1 can be configured to be easily cut in the winding direction Dr.

  In addition, a refractory material such as an aluminum glass cloth can be laminated on a surface that becomes an outer side during winding. Thereby, the fire resistance of the refractory material sheet 1 can be further improved. In addition, for example, a sponge-like flexible material can be laminated on a surface of the deformable piece 12 which is inwardly wound when wound. Thereby, it is easier to fill the gap between the long object aggregate Ca and the refractory sheet 1. Further, irregularities (particularly, convex portions) can be formed on the flexible material.

  In addition, an adhesive layer can be formed on the inner surface during winding. The pressure-sensitive adhesive layer can be covered with release paper before the application. The worker separates the release paper from the refractory material sheet 1 cut into an appropriate longitudinal dimension before winding the long material aggregate Ca at the time of construction and exposes the adhesive layer. When the adhesive layer is formed as described above, the refractory material sheet 1 can be easily wound around the long aggregates Ca to maintain the state.

  In the above-described embodiment, the squeezing tape 22 is used as the reduced diameter member. However, various elongated members or ring-shaped members such as wires, plastic cables, and rubber rings can be used. Further, in the above-described embodiment, the squeezing tape 22 which is a reduced diameter body is wound around the entire outer periphery of the plurality of deformable pieces 12..., But is not limited thereto. When a long body or a ring-shaped body is used as the reduced diameter body, it may be located at least outside the plurality of deformable pieces 12... 12 and may be wound around the long body aggregate Ca or the base 11. . In addition, the reduced diameter member may be a clip-shaped member sandwiching the plurality of deformable pieces 12... 12 or a pin-shaped member fixed to the refractory sheet 1 by penetrating some of the deformable pieces 12 in the thickness direction. Can also. In some cases, a filler such as a mortar or a caulking material disposed between the inner surface of the through-hole Wh and the long object aggregate Ca can also function as a reduced diameter member.

  Further, the refractory material sheet 1 can be wound not only at a portion where a plurality of long objects C... C gather in parallel as shown in FIGS.

  In the example of the construction method, as shown in FIG. 7A, the refractory material sheet 1 is wound around the long aggregates Ca, and after the drawing tape 22 is wound from outside the plurality of deformed pieces 12. The refractory material sheet 1 was slid and positioned inside the wall W (through hole Wh) as shown in FIG. However, the order in which the squeeze tape 22 is wound is not limited to this, and the squeeze tape 22 can be wound after the slide is completed.

  In addition, the long object aggregate Ca of the embodiment is passed through the through hole Wh that penetrates the wall W located at the boundary of the building fire protection section from one side to the other side, but is not limited thereto. . Needless to say, the floor or ceiling may be used instead of the wall W. However, in the wall W, floor, ceiling, etc., the elongated object aggregate Ca is formed in a substantially U-shaped through hole in which both the entrance and the exit are present on one side. May be passed through.

DESCRIPTION OF SYMBOLS 1 Refractory material sheet 11 Base 12 Deformation piece 12W Size of deformation piece in winding direction 12L Dimension of deformation piece in width direction 121 Overlapping part 122 Twisted part 13 Slit 21 Fixing tape 22 Reduced diameter, drawing tape C Long material Ca length Scale assembly Cg Groove W Wall Wh Through hole Dr Winding direction Dw Width direction

Claims (10)

A fire-resistant material sheet that can be wound around the outer periphery of a long object aggregate in which a plurality of long objects are gathered adjacent to each other,
A base and a plurality of deformed pieces extending from the base to an end in the width direction along a width direction which is a direction intersecting with a winding direction which is a direction at the time of winding, in the refractory material sheet, A plurality of slits extending in the width direction, a plurality of deformed pieces formed by being aligned in the winding direction,
It further includes an adhesive layer formed on a surface that becomes an inner side at the time of winding, or at least partially reduces the diameter of at least a part of the plurality of deformed pieces of the refractory material sheet wound around the long object aggregate from the outside. Used with reduced diameter body,
A refractory sheet having a dimension in the width direction of the deformed piece in the refractory sheet larger than the dimension in the winding direction.   Each deformed piece is formed by winding the refractory material sheet around the elongated object aggregate, and in a state where the plurality of deformed pieces are reduced in diameter, in the radial direction of the other deformed pieces and the elongated object aggregate. The refractory material sheet according to claim 1, having an overlapping portion.   Each of the deformed pieces is formed by winding the refractory material sheet around the elongated object aggregate, and then, in a state where the plurality of deformed pieces are reduced in diameter, a twisted portion twisted in a circumferential direction of the elongated object aggregate. The refractory material sheet according to claim 1, comprising: The long object aggregate is gathered so as to form a groove portion having a substantially V-shaped cross section between adjacent long objects,
The torsion portion is formed by winding the refractory material sheet around the long object aggregate, and along the outer peripheral surface of each long object in the groove portion in a state where the plurality of deformed pieces are reduced in diameter. 4. The refractory sheet of claim 3, wherein the sheet is configured to be twisted. Through holes formed in walls or floors located at the boundaries of the building fire compartment;
A plurality of long objects are gathered adjacent to each other, and a long object aggregate penetrating the through hole,
A refractory sheet wound around the outer periphery of the long object assembly,
And a reduced diameter body,
The refractory material sheet includes a base and a plurality of the refractory material sheets extending from the base to an end in the width direction along a width direction that is a direction intersecting with a winding direction that is a direction at the time of winding. A plurality of slits extending in the width direction, a plurality of deformed pieces formed by being arranged in the winding direction,
The reduced diameter body is a penetrating structure of a building fire prevention section for reducing at least a part of the plurality of deformed pieces of the refractory material sheet wound around the long object aggregate from outside.   The penetration structure of a building fire prevention section according to claim 5, wherein the reduced diameter body is wound around an outer periphery of the plurality of deformed pieces.   A refractory sheet for use in a penetration structure of a fire section of a building according to claim 5. A base and a plurality of deformed pieces extending from the base to an end in the width direction, wherein a plurality of slits extending in the width direction are formed by being aligned in a direction intersecting with the width direction. Using a refractory sheet comprising
The refractory material sheet is wound around a long object aggregate in which a plurality of long objects are gathered adjacent to each other so that a direction intersecting with the width direction is along a circumferential direction of the long object aggregate, and the plurality of long objects are wound around the plurality of long objects. Construction method of refractory material to reduce the diameter of deformed pieces.   The method for constructing a refractory material according to claim 8, wherein the refractory material sheet is slid along the extending direction of the long object assembly after the refractory material sheet is wound around the long object assembly.   The method of claim 9, wherein the slide of the refractory sheet is such that the base is forward and the plurality of deformed pieces are rearward.

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