JP5301851B2 - Sleeve forming sheet and method of forming through structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeve forming sheet which makes a sheet body formed in a shape along a peripheral surface of a fire compartment section and which can facilitate the operation of arranging the sheet body in a through-hole and the operation of forming a penetration portion structure; and to provide a formation method for the penetration portion structure. <P>SOLUTION: The sleeve forming sheet 20 is arranged outside a thermally expansible refractory material 15 so as to form the penetration portion structure T in a refractory cavity wall W. The sleeve forming sheet 20 is equipped with the sheet body 21 which is composed of a glass cloth (nonmetallic material) with noncombustibility and which has flexibility so as to be deformable along a peripheral wall surface 11b of a partition wall 11. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a sleeve forming sheet and a sleeve that are disposed outside a thermally expandable refractory material in order to form a through-hole structure in which a thermally expandable refractory material is provided around wiring and piping materials in the through hole The present invention relates to a method for forming a through-hole structure using a forming sheet.

  For example, a through-hole penetrating in the thickness direction is formed in the fire prevention compartment wall so that the wiring / pipe material penetrates through the fire prevention compartment wall (hollow wall) having a hollow portion. This fire protection compartment wall is provided with a through-hole structure to prevent the inflow of flame, smoke, and toxic gas through the through-hole when a fire etc. occurs on the front side of one wall Yes. That is, the through-hole structure is configured to block inflow of flame, smoke, and toxic gas to the other side by closing between the through hole and the wiring / piping material when a fire or the like occurs. As such a penetration part structure, what is indicated by patent documents 1 is mentioned, for example.

The fire-blocking section penetration structure of Patent Document 1 is located on the outer periphery of the through-hole portion of the wiring / piping material, and has a sleeve in which a tape-like expansion body made of a thermally expandable material is laminated on the inner periphery, and the sleeve and the through-hole. And a filler for closing the gap. And when a fire or the like occurs on the front side of one wall, the wiring / piping material is heated and thermally deformed or burnt out, but the tape-like expansion body caused thermal expansion or thermal expansion of the wiring / piping material. Close the gap. Therefore, the inflow of flame, smoke, toxic gas, etc. to the other side can be prevented by the thermally expanded tape-like expansion body. In addition, since the sleeve is provided on the outer periphery of the tape-shaped expansion body, when the tape-shaped expansion body is thermally expanded, the tape-shaped expansion body is prevented from expanding toward the cavity portion of the fire prevention compartment wall, and the gap is surely secured. Can be occluded.
Japanese Patent Laid-Open No. 2004-232452

  By the way, the sleeve used in order to form the fire prevention compartment penetration part structure of patent document 1 is a thing formed by bending the iron plate which is a metal material. For this reason, in order to form a fire prevention compartment penetration structure, a rigid iron plate is deformed into a shape along the peripheral surface of the through hole, and the iron plate is placed in the through hole while maintaining the deformed state (while forming). It was very difficult to perform the work of forming the fireproof section through-hole structure.

  The present invention has been made in order to solve the above-mentioned problems, and its purpose is to form a sheet body into a cylindrical shape along the peripheral surface of the fire prevention compartment and to dispose it in the through hole. It is an object of the present invention to provide a sleeve forming sheet and a method of forming a through portion structure that can be easily performed and can easily form a through portion structure.

In order to solve the above problems, the invention according to claim 1 is characterized in that a wiring / piping material is inserted into a through-hole penetrating the fire protection section in the thickness direction, and the wiring / piping material in the through-hole is inserted. A sleeve-forming sheet disposed outside the thermally expandable refractory material to form a through-hole structure in which a thermally expandable refractory material is provided around, supporting the thermally expandable refractory material The heat-expandable refractory material does not break in the state and does not break even if the thermally expandable refractory material expands due to the occurrence of a fire. A sheet main body formed in a rectangular sheet shape having flexibility so as to be deformable along the peripheral surface of the fire prevention compartment, and forming the sheet main body into a cylindrical shape along the peripheral surface of the through hole; The molded sheet body is placed in the through hole. And summarized in that disposed in entering.

The gist of the invention according to claim 2 is that, in the sleeve forming sheet according to claim 1, the sheet main body contains an inorganic material as a main component.
The gist of the invention according to claim 3 is that, in the sleeve forming sheet according to claim 2, the sheet body is made of glass cloth.

In the invention according to claim 4, the wiring / pipe material is inserted into a through-hole penetrating the fire protection section in the thickness direction, and a thermally expandable refractory material is disposed around the wiring / pipe material in the through-hole. A method of forming a penetration structure in which a sleeve forming sheet is provided outside the thermally expandable refractory material, the sleeve forming sheet being torn while supporting the thermally expandable refractory material The fire-proof compartment portion that has a strength that does not break even when the thermally expandable refractory material expands due to the occurrence of a fire, and is made of a non-flammable or flame-retardant non-metallic material and forms the through hole A sheet body formed into a rectangular sheet having flexibility so as to be deformable along the peripheral surface of the sheet, and the sheet body is formed into a cylindrical shape along the peripheral surface of the through- hole, and the formed sheet Insert the body into the through hole Disposed Te, and summarized in that filling the thermally expandable fireproof material between the wiring and piping material and the molded seat body.

  According to the present invention, it is possible to easily form the sheet main body into a cylindrical shape along the peripheral surface of the fireproof compartment and to dispose it in the through hole, and to easily form the through structure. be able to.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, a fire prevention hollow wall W as a fire prevention section is erected so as to sandwich a plurality of light-weight shaped steel members 10 (only one light-weight shaped steel member 10 is shown in FIG. 1) and the light-weight shaped steel members 10. It is constructed from a plurality of pairs of partition walls (gypsum board) 11 as the partitioned members. A cavity 12 is formed between the partition walls 11 facing each other with the lightweight steel member 10 interposed therebetween. The fire prevention hollow wall W is changed in thickness by changing the thickness of the lightweight steel material 10 and changing the width of the cavity 12 along the thickness direction of the fire prevention hollow wall W so that the thickness of the fire prevention hollow wall W is changed. It has become. A through hole 14 for allowing the wiring / pipe material 13 to penetrate is formed in the fire prevention hollow wall W so as to penetrate in the thickness direction of the fire prevention hollow wall W. The through hole 14 is formed by connecting a circular through hole 11 a formed in each partition wall 11 and the cavity portion 12 in the thickness direction of the fire prevention hollow wall W.

  The fire prevention hollow wall W allows the wiring / pipe material 13 to be inserted into the fire prevention hollow wall W through both the through holes 11 a and the cavity 12. The wiring / pipe material 13 is a general term for wiring (control cables, coaxial cables, optical cables, etc.) and piping materials (synthetic resin flexible cable tubes, steel cable tubes, etc.) arranged in a building. It is.

  As shown in FIGS. 1 and 2, the through-hole structure T formed in the fire prevention hollow wall W has the wiring / pipe material 13 inserted into the through-hole 14 and the wiring / pipe material 13 in the through-hole 14. A heat-expandable refractory material 15 is provided in the periphery, and a sleeve-forming sheet 20 that functions as a sleeve is disposed outside the heat-expandable refractory material 15. The heat-expandable refractory material 15 forming the penetrating part structure T is formed in a rectangular parallelepiped shape. As shown in FIG. 1, the heat-expandable refractory material 15 is formed by accommodating the entire block body 15a formed in a rectangular parallelepiped shape in an exterior member 15b made of a heat-expandable heat-resistant material having a square box shape. Has been. That is, the entire block body 15a is wrapped by the exterior member 15b, so that it cannot be removed from the exterior member 15b, and the block body 15a and the exterior member 15b are integrated so as not to be separated.

  The block body 15a is formed in a rectangular parallelepiped shape from a nonflammable material such as ceramic wool or rock wool, and the block body 15a itself has a cushioning property and has a required elasticity. That is, the block body 15a can be compressed and deformed, and can be returned to the original shape from the compressed and deformed state.

  The exterior member 15b is made of a flame-retardant heat-expandable heat-resistant material. This heat-expandable heat-resistant material is a rubber (heat-expandable rubber) that has been molded into a predetermined shape by mixing with an expandable material whose volume expands to 3 times or more of that before heating when it receives heat of 120 ° C. or higher. In addition, it is obtained through a vulcanization process. The vulcanization step is a step in which heat is applied to the thermally expanded rubber that has undergone the molding step to cause a vulcanization (crosslinking) reaction or an adhesion reaction. Then, through the vulcanization step, the heat-expandable heat-resistant material can be formed into the square box-shaped exterior member 15b, and rubber properties can be imparted to the exterior member 15b.

  Next, the sleeve forming sheet 20 will be described in detail. The entire sleeve forming sheet 20 is formed of a non-metallic material having nonflammability so that it will not be burned out before the thermally expandable refractory material 15 expands in the event of a fire or the like. In the present embodiment, the entire sleeve forming sheet 20 is formed of a glass cloth (glass fiber cloth) whose main component is an inorganic material. The sleeve forming sheet 20 is flexible so that it can be deformed along the peripheral wall surface 11 b of the partition wall 11 as the peripheral surface of the fireproof hollow wall W forming the through hole 14. Further, when the sleeve-forming sheet 20 supports a large number of the heat-expandable refractory materials 15 in the state of being disposed in the through holes 14, the sleeve-forming sheet 20 is not torn and the heat-expandable refractory materials 15 are expanded and pressed. Has the required strength so that it will not break.

  As shown in FIG. 3, the sleeve forming sheet 20 includes a sheet main body 21 formed in a rectangular sheet shape, and has a large number of positioning pieces 22 at both ends extending in the long side direction of the sheet main body 21. The length L1 along the long side direction of the sleeve forming sheet 20 (sheet main body 21) is 675 mm, and the length L2 along the short side direction of the sheet main body 21 is 100 mm. The length L1 of the sleeve forming sheet 20 (sheet body 21) is such that when the sheet body 21 is disposed in the through hole 14, the entire opening of the cavity portion 12 facing the through hole 14 can be closed by the sheet body 21. It is longer than the circumferential length of the through hole 14. Further, the length L2 of the seat body 21 is the same as the minimum value (100 mm) of the thickness (100 mm or more) of the fireproof hollow wall W certified by the Building Standard Law. The length L2 of the sheet main body 21 is set to be equal to or greater than the thickness of the light-weight shaped steel material 10 present in plural types. For this reason, the whole opening of the cavity 12 toward the through hole 14 can be closed by the seat body 21.

  The positioning piece 22 has a length L3 along the length direction of 50 mm. The positioning piece 22 can be bent from any position in the length direction. The sum (200 mm) of the length along the short side direction of the sleeve forming sheet 20, that is, the length L 2 along the short side direction of the sheet body 21 and the length L 3 along the length direction of the positioning piece 22. Is longer than the thickness (100 mm or more) of the fireproof hollow wall W certified by the Building Standard Law. An adhesive is applied to one surface of the positioning piece 22, and an adhesive surface 22a is provided on the positioning piece 22 by the adhesive (see FIG. 3).

  As shown in FIG. 3, when the sleeve forming sheet 20 is not used, the release paper 23 is attached to the adhesive surface 22 a and the adhesive surface 22 a is covered with the release paper 23. The release paper 23 is stuck so as to cover the adhesive surface 22a of the positioning piece 22 and the side edges of both long sides of the sheet body 21. In addition, since there are only cuts made to form the positioning pieces 22 between the positioning pieces 22 adjacent to each other in the long side direction of the sleeve forming sheet 20, a large number of the positioning pieces 22 are included in the sheet body. 21 is provided continuously in the long side direction, and no gap is formed between the positioning pieces 22.

  The sleeve forming sheet 20 having the above configuration is manufactured by processing a glass cloth formed in a predetermined rectangular shape. That is, on both long sides of the glass cloth, an adhesive is applied in a width of 60 mm along the short side direction of the glass cloth to form the adhesive surface 22a, and the release paper 23 is disposed so as to cover the entire adhesive surface 22a. Stick it on a glass cloth. The length along the long side direction of the release paper 23 is the same as the length L1 along the long side direction of the glass cloth (sleeve forming sheet 20), and the length along the short side direction of the release paper 23. L4 (60 mm) is longer than the length L3 (50 mm) along the length direction of the positioning piece 22.

  And, by forming a large number of cuts at a depth of 50 mm along the short side direction of the glass cloth on both long sides of the glass cloth and the release paper 23, the sheet main body 21 is simultaneously formed with a large number of positioning pieces 22 The sleeve forming sheet 20 is manufactured by forming. The release paper 23 is cut from both long sides, but the entire release paper 23 is not cut along the short side direction, and is connected at the cut destination, and the release paper 23 is divided into a plurality of pieces. Not.

  Next, a method for forming the through portion structure T using the sleeve forming sheet 20 will be described. When forming the penetrating part structure T, the penetrating part structure T can be formed with one sleeve forming sheet 20 even if the two types of fireproof hollow walls W have different thicknesses.

First, the case where the penetration part structure T is formed in the fire prevention hollow wall W with a thickness of 100 mm is demonstrated.
4A and 4B, the sheet main body 21 in the sleeve forming sheet 20 is formed into a cylindrical shape along the peripheral wall surface 11b of the partition wall 11, and the formed sheet main body 21 is formed. It is inserted into the through hole 14 and arranged. At this time, since the sheet main body 21 is made of a flexible glass cloth, the work of forming the sheet main body 21 along the peripheral wall surface 11b can be easily performed. When the sheet main body 21 is formed, the forming direction of the sheet main body 21 is considered so that the adhesive surface 22a (release paper 23) of the positioning piece 22 is exposed on the outer peripheral surface of the sleeve forming sheet 20. Further, the length L1 of the sleeve forming sheet 20 (sheet main body 21) is matched with the circumferential length of the through hole 14, and the extra length portion in the sleeve forming sheet 20 is cut and removed.

  Here, the thickness (100 mm) of the fireproof hollow wall W is the same as the length L2 (100 mm) of the seat body 21. For this reason, when the sheet body 21 is disposed in the through hole 14 so that the short side of the sheet body 21 matches the thickness of the fire prevention hollow wall W, both end edges extending in the long side direction of the sheet body 21 are fire prevention hollow. It is located on the boundary between the wall surface 11 c of each partition wall 11 as the surface of the wall W and the peripheral wall surface 11 b of each partition wall 11. Moreover, the length along the short side direction of the sleeve forming sheet 20 is 200 mm, and the thickness of the fireproof hollow wall W is 100 mm. For this reason, when the sheet body 21 is disposed in the through hole 14, the positioning piece 22 necessarily protrudes from the both wall surfaces 11c of the fire prevention hollow wall W, and the positioning piece 22 can be bent toward the wall surface 11c.

  Next, the release paper 23 is removed from the adhesive surface 22a to expose the adhesive surface 22a, and the positioning pieces 22 protruding from the both wall surfaces 11c of the fire prevention hollow wall W are connected to the wall surface 11c of each partition wall 11 and the partition wall 11. Bend from the boundary with the peripheral wall surface 11b. At this time, the positioning piece 22 is bent from its proximal end. Then, the adhesive surface 22a of the bent positioning piece 22 is adhered (fixed) to the wall surface 11c of the partition wall 11. Then, the seat body 21 is positioned so as to be immovable in the through hole 14 along the peripheral wall surface 11 b, and the entire opening of the cavity portion 12 toward the through hole 14 is closed by the seat body 21.

  On the other hand, as shown in FIG. 5 (a) and FIG. 5 (b), the thickness of the lightweight steel material 10 is thicker than that used for the fire prevention hollow wall W having a thickness of 100 mm, and the fire prevention hollow has a thickness greater than 100 mm. When forming the penetration part structure T in the wall W (115 mm), first, the sleeve forming sheet 20 is disposed in the through hole 14. That is, the sheet body 21 in the sleeve forming sheet 20 is formed into a cylindrical shape along the peripheral wall surface 11 b of the partition wall 11, and the formed sheet body 21 is inserted into the through hole 14 and disposed.

  At this time, since the sheet main body 21 is made of a flexible glass cloth, the work of forming the sheet main body 21 along the peripheral wall surface 11b can be easily performed. When the sheet main body 21 is formed, the forming direction of the sheet main body 21 is considered so that the adhesive surface 22a (release paper 23) of the positioning piece 22 is exposed on the outer peripheral surface of the sleeve forming sheet 20. Further, the length L1 of the sleeve forming sheet 20 (sheet main body 21) is matched with the circumferential length of the through hole 14, and the extra length portion in the sleeve forming sheet 20 is cut and removed.

  Here, the thickness (115 mm) of the fireproof hollow wall W is longer than the length L2 (100 mm) of the sheet body 21. For this reason, when the sheet body 21 is disposed in the through hole 14 so that the short side of the sheet body 21 is within the thickness of the fire prevention hollow wall W, both end edges extending in the long side direction of the sheet body 21 are It is located closer to the inside of the through hole 14 than the boundary between the wall surface 11 c of the partition wall 11 and the peripheral wall surface 11 b of each partition wall 11. The length of the sleeve forming sheet 20 along the short side direction is 200 mm, and the thickness of the fireproof hollow wall W is 115 mm. For this reason, when the sheet body 21 is disposed in the through hole 14, the positioning piece 22 necessarily protrudes from the both wall surfaces 11c of the fire prevention hollow wall W, and the positioning piece 22 can be bent toward the wall surface 11c.

  Next, the release paper 23 is removed from the adhesive surface 22a to expose the adhesive surface 22a, and the positioning pieces 22 protruding from the both wall surfaces 11c of the fire prevention hollow wall W are connected to the wall surface 11c of each partition wall 11 and the partition wall 11. Bend from the boundary with the peripheral wall surface 11b. At this time, the positioning piece 22 is bent from the front end side of the base end. Then, the adhesive surface 22a of the bent positioning piece 22 is adhered (fixed) to the wall surface 11c of the partition wall 11. Then, the seat body 21 is positioned so as to be immovable in the through hole 14 along the peripheral wall surface 11 b, and the entire opening of the cavity portion 12 toward the through hole 14 is closed by the seat body 21.

  Thereafter, the penetration structure T is formed in the fire prevention hollow wall W of any thickness by the same procedure. That is, as shown in FIG. 2, the wiring / pipe material 13 is inserted into the through hole 14. Then, a thermally expandable refractory material 15 is filled in a gap formed between the sheet main body 21 and the wiring / piping material 13. When the thermally expandable refractory material 15 is filled so that there is no gap between the thermally expandable refractory materials 15, the penetration structure T is formed in the fireproof hollow wall W.

  Now, in a building in which the through-hole structure T is formed in the fire prevention hollow wall W, it is assumed that a fire or the like has occurred on one wall front side of the fire prevention hollow wall W, and the wiring / piping material 13 has burned. At this time, the outer member 15 b of the thermally expandable refractory material 15 is in pressure contact with the outer surface of the wiring / pipe material 13. And the exterior member 15b consists of a flame-retardant heat-expandable heat-resistant material. For this reason, the exterior member 15b is not immediately burned away by heat, but expands by receiving heat. Moreover, since the block body 15a is formed from the material which has nonflammability, when the exterior member 15b expand | swells, the block body 15a does not burn.

  In addition, since the seat body 21 is nonflammable, it does not burn out even when receiving heat from a fire or the like, and supports the thermally expandable refractory material 15 until the thermally expandable refractory material 15 expands, and the through hole 14. Continue to close the entire opening of the cavity 12 towards. The heated exterior member 15b expands toward the wiring / pipe material 13, and the adjacent exterior members 15b join to form a plurality of thermally expandable refractory materials 15 in one lump.

  At this time, the entire opening of the cavity 12 toward the through hole 14 is closed by the sheet main body 21 of the sleeve forming sheet 20. For this reason, the sleeve forming sheet 20 functions as a sleeve, and the thermal expansion refractory material 15 is prevented from expanding toward the cavity portion 12. As a result, the thermally expandable refractory material 15 expands toward the wiring / pipe material 13 and is crushed by the thermally expandable refractory material 15 expanded. Then, the expanded heat-expandable refractory material 15 hermetically closes the space between the wiring / pipe material 13 and the sheet main body 21, and flame, heat, smoke, toxic gas between the wiring / pipe material 13 and the peripheral wall surface 11 b. This prevents the flame, heat, smoke, and toxic gas from being transmitted to the other wall surface of the fire prevention hollow wall W.

According to the above embodiment, the following effects can be obtained.
(1) The entire sleeve forming sheet 20 is made of a glass cloth (non-metallic material) having incombustibility and flexibility. For this reason, the sheet body 21 is rolled up to be smaller than the opening size of the through hole 14, is formed into a cylindrical shape along the peripheral wall surface 11 b of the partition wall 11, and the sheet body 21 is disposed in the through hole 14. Work can be done easily. Therefore, by using the sleeve forming sheet 20, it is possible to easily perform the forming operation of the through portion structure T.

  (2) The sleeve forming sheet 20 includes a sheet main body 21 and a positioning piece 22, and the positioning piece 22 is bent in a state where the sheet main body 21 is disposed in a cylindrical shape along the peripheral wall surface 11 b of the partition wall 11. It can be adhered (fixed) to the wall surface 11 c of the partition wall 11. Therefore, the sheet main body 21 can be positioned in the through hole 14 so as not to move by sticking the positioning piece 22 to the wall surface 11c. As a result, the entire opening of the cavity 12 toward the through hole 14 can be reliably closed by the seat body 21.

  (3) The sleeve forming sheet 20 includes a sheet main body 21 and includes a positioning piece 22, and the positioning piece 22 is formed to be bendable from any position in the length direction. Even if the thickness of the fire prevention hollow wall W is different, by changing the bending position of the positioning piece 22, the positioning piece 22 is attached to the wall surface 11 c of the partition wall 11, and the sheet body 21 is placed in the through hole 14. Can be positioned. Therefore, even if it is one type of sleeve formation sheet 20, the penetration part structure T can be formed in the some fire prevention hollow wall W from which thickness differs. As a result, a plurality of types of sleeves having different lengths are required for each thickness of the fire prevention hollow wall W, and when forming the through-hole structure T, it is necessary to select a sleeve from a plurality of types. Thus, the penetrating portion structure T can be easily formed.

  (4) The sheet body 21 is formed of a non-combustible glass cloth (non-metallic material). For this reason, it can prevent that the sheet | seat main body 21 burns down with a heat | fever, and the whole opening of the cavity part 12 toward the through-hole 14 is closed by the sheet | seat main body 21 until the heat-expandable refractory material 15 has fully expanded. Can continue. Therefore, the sleeve-forming sheet 20 prevents the thermally expandable refractory material 15 from expanding from the inside of the through hole 14 into the cavity 12, and allows the thermally expandable refractory material 15 to expand toward the wiring / pipe material 13. The wiring / pipe material 13 can be reliably crushed by the thermally expandable refractory material 15.

  (5) An adhesive is applied to one surface of the positioning piece 22 to form an adhesive surface 22a. For this reason, the positioning piece 22 can be easily attached to the wall surface 11 c of the partition wall 11, and the operation of positioning the sheet main body 21 in the through hole 14 can be easily performed.

  (6) A large number of positioning pieces 22 are formed along the long side direction of the sheet main body 21. For this reason, in the sleeve forming sheet 20, a large sticking area to the wall surface 11 c of the partition wall 11 can be ensured, and the sheet main body 21 can be reliably positioned in the through hole 14.

  (7) The length L2 along the short side direction of the sheet body 21 is the same as the minimum value of the thickness of the fireproof hollow wall W certified by the Building Standard Law. For this reason, when forming the penetration part structure T in the fire prevention hollow wall W recognized by the Building Standard Law, the sheet main body 21 does not protrude from the inside of the through hole 14 to the wall surface or the wall back side, and the fire prevention hollow wall Deterioration of the appearance of W can be prevented. Moreover, since the thickness of the fire prevention hollow wall W recognized by the Building Standard Law is equal to or longer than the length L2 along the short side direction of the sheet body 21, the sheet body 21 is adjusted to the thickness of the fire prevention hollow wall W. It is not necessary to adjust the length L2 by cutting, and the forming operation of the through-hole structure T can be easily performed.

  (8) The length of the sleeve forming sheet 20 along the short side direction (the sum of the length L2 along the short side direction of the sheet main body 21 and the length L3 along the length direction of the positioning piece 22) is The thickness of the fireproof hollow wall W is longer. For this reason, in the state where the sheet body 21 is disposed along the peripheral wall surface 11b so as to close the entire opening of the cavity 12 toward the through hole 14, the positioning piece 22 can be protruded out of the through hole 14. it can. For this reason, the positioning piece 22 can be bent and the adhesive surface 22a can be adhered to the wall surface 11c.

  (9) A large number of positioning pieces 22 are continuously formed in the long side direction of the sheet main body 21, and no gap is formed between the positioning pieces 22 adjacent to each other in the long side direction of the sheet main body 21. For this reason, even if the positioning piece 22 is bent, a large gap is prevented from being formed between the positioning pieces 22.

  (10) The length L1 of the sleeve forming sheet 20 (sheet main body 21) is longer than the circumferential length of the through-hole 14, and the sleeve forming sheet 20 is made of glass cloth and can be easily cut. For this reason, the length L1 of the sleeve forming sheet 20 (sheet body 21) can be adjusted to the circumferential length of the through-hole 14, and further, the work of cutting and removing the extra length can be easily performed.

  (11) The sleeve forming sheet 20 functions as a sleeve, and the entire opening of the cavity 12 toward the through hole 14 can be closed by the sheet main body 21. Therefore, when performing the operation | work which fills the thermal expansion refractory material 15 in the through-hole 14 in order to form the penetration part structure T, it prevents that the thermal expansion refractory material 15 falls into the cavity part 12 by the sheet | seat main body 21. can do.

  (12) The release paper 23 is cut along with the formation of the positioning piece 22, and a portion where no cut is formed is provided over the entire long side direction of the sheet body 21. For this reason, the release paper 23 is integrally connected along the long side direction of the sheet body 21. Therefore, when the release paper 23 is peeled to expose the adhesive surface 22a, all the adhesive surfaces 22a can be exposed at a time. Therefore, for example, the work of exposing the adhesive surface 22a can be easily performed as compared with the case where the release sheets 23 are adhered to the positioning pieces 22 one by one.

In addition, you may change the said embodiment as follows.
As shown in Drawing 6, when forming penetration part structure T in penetration hole 14 formed in the shape of a square hole, sleeve formation sheet 20 may be used. In the through portion structure T, a cable rack 30 is disposed in the through hole 14. The wiring / pipe material 13 is supported by the cable rack 30 and laid so as to penetrate the fire-proof hollow wall W. A gap between the cable rack 30 and the wiring / pipe material 13 is filled with a fire-resistant putty 31. The gap between the cable rack 30 and the fireproof putty 31 and the sleeve forming sheet 20 is filled with a plurality of thermally expandable fireproof materials 15 without any gaps.

  When comprised in this way, the whole sleeve formation sheet 20 consists of glass cloth (nonmetallic material) which has a nonflammability and flexibility. For this reason, the sheet body 21 is molded until it becomes smaller than the opening size of the through hole 14 and is formed into a square cylinder shape along the peripheral wall surface 11 b of the partition wall 11, and the sheet body 21 is disposed in the through hole 14. The installation work can be easily performed. Therefore, by using the sleeve forming sheet 20, it is possible to easily perform the forming operation of the through portion structure T.

The sleeve forming sheet 20 may be formed of only the sheet body 21 without the positioning piece 22.
In the sleeve forming sheet 20, the positioning pieces 22 may be formed with a gap along the long side direction of the sheet main body 21, and in this case, the number of positioning pieces 22 is smaller than in the embodiment. Alternatively, one positioning piece 22 may be provided at one end edge of the sheet body 21 or one at each end edge.

A plurality of sleeve forming sheets 20 may be disposed outside the heat-expandable refractory material 15, and the plurality of sleeve forming sheets 20 may cover the entire circumference of the peripheral wall surface 11b of the partition wall 11.
○ When the circumferential length of the through-hole 14 is shorter than the length L1 in the long side direction of the sleeve forming sheet 20, the sleeve is formed in a roll shape by winding the sleeve forming sheet 20 without cutting the surplus length portion. The forming sheet 20 may be disposed along the peripheral wall surface 11 b of the partition wall 11.

The positioning piece 22 may be formed only at one end edge along the long side direction of the sheet main body 21.
The adhesive surface 22 a may be formed by applying an adhesive to the positioning piece 22 at the construction site when positioning the sheet body 21 without previously forming the adhesive surface 22 a on one surface of the positioning piece 22.

  ○ When positioning the sheet main body 21 without previously forming the adhesive surface 22a on one surface of the positioning piece 22, a nail or the like is driven from the positioning piece 22 into the wall surface 11c to fix the positioning piece 22 to the wall surface 11c of the partition wall 11. May be.

O You may embody as a fire prevention division part in the fire prevention division floor which has a cavity part, or the fire prevention division floor which does not have a cavity part.
○ The sleeve forming sheet 20 is made of a flame retardant material (a material having flame retardancy) obtained by kneading a flame retardant (for example, a halogen compound) into plastic or rubber, or applying a flame retardant to the surface of fibers or paper. It may be formed.

  In the embodiment, the release paper 23 may be attached independently to each positioning piece 22, and when the adhesive surface 22a is exposed, the release paper 23 attached to the adhesive surface 22a to be exposed. May be peeled independently.

O When forming the penetration part structure T in the concrete wall as a fire prevention division part, you may use the sleeve formation sheet 20 of embodiment.
In the fire prevention hollow wall W, the cavity 12 may be filled with a heat insulating material. When comprised in this way, the site | part in which the through-hole 14 was formed is removed from a heat insulating material.

The direction of the thermally expandable refractory material 15 filled in the through hole 14 may be changed according to the thickness of the fireproof hollow wall W.
Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.

  (1) The sheet body has a rectangular sheet shape and is positioned at one end edge or both end edges extending in the long side direction along the circumferential surface of the fire protection compartment in the through hole. Therefore, the sleeve forming sheet according to any one of claims 1 to 3, further comprising a positioning piece fixed to the surface of the fireproof compartment.

(2) The sleeve forming sheet according to the technical idea (1), wherein the positioning piece is provided with an adhesive surface.
(3) The sleeve forming sheet according to the technical idea (1) or the technical idea (2), in which a large number of the positioning pieces are provided along one end edge or both end edges of the sheet main body.

The disassembled perspective view which shows the penetration part structure of embodiment. The front view which shows a penetration part structure. The top view which shows a sleeve formation sheet. (A) is a fragmentary perspective view which shows the state which has arrange | positioned the sleeve formation sheet in a through-hole, (b) is sectional drawing which shows the inside of a through-hole. (A) is a fragmentary perspective view which shows the state which has arrange | positioned the sleeve formation sheet in a through-hole, (b) is sectional drawing which shows the inside of a through-hole. The front view which shows the state which provided the penetration part structure in the through-hole of square hole shape.

Explanation of symbols

  T: Penetration structure, W: Fire prevention hollow wall as fire protection compartment, 11b ... Peripheral wall surface of partition wall as peripheral surface of fire protection compartment, 13 ... Wiring / piping material, 14 ... Through hole, 15 ... Thermal expansion Refractory material, 20 ... sleeve forming sheet, 21 ... sheet body.

Claims (4)

A wiring / pipe material is inserted into a through-hole penetrating the fire protection section in the thickness direction, and a through-hole structure is formed in which a thermally expandable refractory material is provided around the wiring / pipe material in the through-hole. A sleeve forming sheet disposed outside the thermally expandable refractory material,
Non-combustible or flame-retardant non-metallic material that has a strength that does not break while supporting the thermally expandable refractory material and that does not break even if the thermally expandable refractory material expands due to the occurrence of a fire And a sheet main body formed in a rectangular sheet shape having flexibility so as to be deformable along the peripheral surface of the fireproof compartment that forms the through hole, and the sheet main body is disposed around the through hole. A sleeve-forming sheet , which is formed into a cylindrical shape along a surface, and the formed sheet body is inserted and disposed in the through hole .   The sleeve forming sheet according to claim 1, wherein the sheet body is mainly composed of an inorganic material.   The sleeve forming sheet according to claim 2, wherein the sheet body is made of glass cloth. A wire / pipe material is inserted into a through-hole penetrating the fire protection section in the thickness direction, and a thermally expandable refractory material is provided around the wire / pipe material in the through-hole. A method for forming a through-hole structure in which a sleeve forming sheet is disposed on the outside,
The sleeve-forming sheet has a strength that does not break while supporting the thermally expandable refractory material, and does not break even if the thermally expandable refractory material expands due to the occurrence of a fire. A sheet body made of a non-metallic material and formed into a rectangular sheet having flexibility so as to be deformable along the peripheral surface of the fireproof compartment forming the through hole;
The sheet body is molded into a cylindrical shape along the peripheral surface of the through hole , the molded sheet body is inserted into the through hole, and is disposed between the molded sheet body and the wiring / pipe material. A method for forming a penetrating portion structure in a fireproof compartment, which is filled with the thermally expandable refractory material.

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