JP6308980B2 - Refractory columns and beams - Google Patents

Description

  The present invention relates to a refractory column and a refractory beam, and more particularly, to a refractory column and a refractory beam used in a building having a refractory performance of 45 minutes or more.

  For example, in the case of Japanese residential buildings, the surface of the wooden pillars and beams, which are structural materials, is exposed indoors, as traditionally it is a true wall structure that reveals wooden pillars and beams. Design is preferred. The wood spaces that show such pillars and beams are in a state where exposed parts of the pillars and beams, which are structural materials, are directly heated and burned in the event of a fire. It is necessary to ensure the performance that does not collapse while withstanding the load that supports the building even when subjected to fire heating.

  For this reason, for example, when designing the appearance of pillars and beams with wooden quasi-refractory structures, it is common to perform the burn-in design shown in the Building Standards Act “Ministry of Construction No. 1358, No. 1358 of the H12 Year” Is. The burn-in design is a design in which a predetermined burn-in area (for example, 35 mm burn-in area for laminated wood in the semi-fired structure 45 minutes) is added to the cross section necessary for short-term structural strength during an earthquake. Since the burn-up margin cannot be included in the structure calculation, the structure calculation becomes inefficient.

  In addition, the cross section of the pillar or beam after the burn-in design tends to have a large finishing width, and generally exceeds the cross-sectional width of structural wood having a width of, for example, 120 mm. Since it is almost handled as a special order, it takes a lot of work and time to produce structural wood including joint processing.

  In response to these problems, for example, when designing an exposed beam with a wooden quasi-refractory structure, for example, a structure has been developed that can maintain a refractory performance of 45 minutes or more without using a burn-in design. (For example, refer to Patent Document 1). In addition, by combining structural woods that are generally distributed, a structure that can be designed to burn out without specially forming a structural wood with a large cross section has been developed (for example, patent documents) 2, see Non-Patent Document 1).

JP 2014-9499 A JP 2013-204261 A

Obayashi Corporation Press Release (March 27, 2013)

  However, in the structure described in Patent Document 1, since the exposed portion of the exposed beam is limited to less than half of the original beam, the portion that can be expressed is reduced when the beam is small, It will not be possible to fully demonstrate the design as a woody space showing the beam.

  In the structure described in Patent Document 2, it is possible to form pillars and beams in consideration of the burn-in portion by combining structural woods that are generally distributed. A gap is maintained between the decorative column or decorative beam, which is the margin, and the structural member, and the decorative column or decorative beam is in an unconstrained state. In some cases, the decorative beam is likely to be deformed or opened, and the function as a burnt portion cannot be fully exhibited. Further, in the structure described in Non-Patent Document 1, for example, three beam members made of a structural single plate laminated material (LVL) having a width of 75 mm are arranged side by side and spelled using bolts to reduce the cross-sectional width. By making it 225 mm, it is possible to maintain the same structural strength as structural wood with a large cross section, but because it is joined using bolts instead of secondary bonding, As a result, it becomes difficult to fully include the finished cross section in the structural calculation, and it becomes impossible to perform an efficient burnout design.

  Therefore, it is possible to form columns and beams with non-damage properties in fireproof and fireproof performance in consideration of burn-in parts at low cost and efficiently using generally distributed structural wood. The development of new technology is desired.

  INDUSTRIAL APPLICABILITY According to the present invention, pillars and beams having non-damage properties in fireproof performance and taking into account burnable parts can be formed inexpensively and efficiently using structural wood that is generally distributed. The purpose is to provide fire-resistant columns and fire-resistant beams.

  The present invention is a refractory column used in a building having a fire resistance of 45 minutes or more quasi-refractory structure, and includes a structural column member having a rectangular cross-sectional shape and a pair of side portions facing each other. A pair of burnt-in support pillars each having a side part having a width similar to the width of the side part and arranged in a covering manner and having a rectangular cross-sectional shape, and the other pair of opposite side faces of the structural pillar This is a function that does not damage the wood of the concealed part, which is attached so as to conceal the part and the end face part of the supporting pillar material on both sides of the part, for 45 minutes or more in the event of a fire, and does not cause thermal deterioration. The above object is achieved by providing a refractory column including a refractory covering material having a function.

  In the refractory column of the present invention, the refractory covering material is attached by driving a fixing screw or a fixing nail toward the end surface portion of the supporting pillar material disposed on both sides of the structural column material. Preferably it is.

  It is preferable that the fireproof pillar of the present invention is provided with a decorative wood board material so as to cover an outer peripheral surface of the fireproof covering material other than a surface that covers the structural pillar material and the supporting pillar material for the burnout.

  In the refractory column of the present invention, it is preferable that the additional column material for burnt be formed using wood having a specific gravity of 0.4 or more.

  In the refractory column of the present invention, the supporting pillar material for the burnout is made of larch, dafrika larch, bay pine, spruce, todomatsu, Scots pine, cypress, spruce, or cedar aggregate, lumber, or single-plate laminated material. It is preferable to be formed by using.

  In the fireproof pillar of the present invention, the fireproof covering material is gypsum board, reinforced gypsum board, calcium silicate board, siding, mortar, concrete, lightweight cellular concrete, wood cement board, wood, flame retardant wood, glass wool, rock It is preferably formed using wool or phenol foam.

  Further, the present invention is a fire-resistant beam used in a building having a fire resistance performance equal to or higher than a 45-minute quasi-refractory structure, and includes a structural beam material having a rectangular cross-sectional shape and a pair of side portions facing the structural beam material. A pair of burn-in beam members having a vertical cross section, each having a vertical width similar to the vertical width of each of the side surfaces, and a bottom surface portion and both sides of the structural beam material, Fireproofing that has the function of preventing the destruction of the timber of the covered part, which has been attached so as to continuously cover the lower surface part of the supporting beam material for the burn-in, by combustion for 45 minutes or more in the event of a fire The above object is achieved by providing a refractory beam including a covering material.

  In the fire-resistant beam of the present invention, the fire-resistant covering material is attached by driving a fixing screw or a fixing nail toward the lower surface portion of the auxiliary beam material for the burner disposed on both sides of the structural beam material. Preferably it is.

  The fire-resistant beam of the present invention is preferably provided with a decorative wood board material covering an outer peripheral surface of the fire-resistant covering material other than a surface that covers the structural beam material and the auxiliary beam material for burn-in.

  In the refractory beam of the present invention, it is preferable that the auxiliary beam material for burnt is formed using wood having a specific gravity of 0.4 or more.

  In the fire-resistant beam of the present invention, the burn-in beam is made of larch, dafrika larch, bay pine, spruce, todomatsu, Scots pine, cypress, spruce, or a cedar laminated timber, lumber, or veneer laminate. It is preferable to be formed by using.

  In the fireproof beam of the present invention, the fireproof covering material is gypsum board, reinforced gypsum board, calcium silicate board, siding, mortar, concrete, lightweight cellular concrete, wood cement board, wood, flame retardant wood, glass wool, rock It is preferably formed using wool or phenol foam.

  According to the fire-proof column or fire-resistant beam of the present invention, a pillar or beam that has non-damage properties in fire-proof performance and that takes into account the burn-in part can be used at low cost by using structural wood that is generally distributed. And it can form efficiently.

1 is a schematic partial cutaway perspective view illustrating a framework structure of a building, which is formed using a refractory column or a refractory beam according to a preferred embodiment of the present invention. It is sectional drawing along AA of FIG. It is sectional drawing along BB of FIG. It is sectional drawing which illustrates the other form of the refractory column of this invention. It is sectional drawing which illustrates the other form of the refractory beam of this invention. It is sectional drawing which illustrates the other form of the refractory beam of this invention.

  A fireproof column 10 and a fireproof beam 20 according to a preferred embodiment of the present invention shown in FIG. 1 are, for example, a wooden building by a frame construction method as a building having a fireproof performance of 45 minutes or more quasi-fireproof structure. It is used as a pillar or beam that is a framework member that constitutes a framework structure that supports weight, wind load, seismic load, and the like. In the present embodiment, the refractory column 10 and the refractory beam 20 form a beam-winning joint between the column and the beam, in which the refractory column 10 is joined in a state of being erected upward and downward from the refractory beam 20. Yes. The refractory column 10 and the refractory beam 20 according to the present embodiment can be easily formed using structural wood having a generally distributed width of, for example, 45 mm to 120 mm, and the whole or substantially the entire three or four sides. Even if the exposed part is exposed to direct heating and burns, the fireproof and non-damaging property (withstands the load that supports the building even under fire heating). It is equipped with a function that can ensure sufficient performance that does not collapse.

  And the fireproof pillar 10 of this embodiment is a pillar member used, for example in a wooden house building as a building provided with the fireproof performance more than 45 minutes semi-fireproof structure, and as shown in Drawing 1 and Drawing 2, A structural column 11 having a rectangular cross-sectional shape, and a width similar to the width b3 of these side surface portions 11a and 11a, which are respectively disposed so as to cover one pair of opposing side surface portions 11a and 11a of the structural column material 11 A pair of burner support pillars 12 having a rectangular cross-sectional shape, the other pair of side parts 11b, 11b of the structural pillar 11 and the burner support pillars 12 on both sides. And a fireproof covering material 13 that has a function of preventing destruction of the timber of the concealed portion, which has been attached so as to continuously conceal the end surface portion 12b, by a combustion and a function of not causing thermal deterioration during a fire for 45 minutes or more. It is composed of

  In this embodiment, the fireproof pillar 10 covers the outer peripheral surface 13c other than the face 13b that covers the structural pillar material 11 of the fireproof covering material 13 and the supporting pillar material 12 for the burn-in, and the decorative wood board material 14 is attached. Yes.

  In addition, the fire-resistant beam 20 of the present embodiment is a beam member used in, for example, a wooden residential building as a building having a fire resistance of 45 minutes or more, and as shown in FIGS. 1 and 3. A structural beam member 21 having a rectangular cross-sectional shape, and a vertical width similar to the vertical width b2 of the side surface portions 21a and 21a, which are respectively arranged so as to cover the pair of opposing side surface portions 21a and 21a of the structural beam material 21 A pair of burn-in beam members 22 having a rectangular cross-sectional shape, a lower surface portion 21b of the structural beam material 21, and lower surface portions 22b of the burn-in beam members 22 on both sides. And a fireproof covering material 23 having a function of not damaging the timber of the obscured portion, which is attached so as to cover it, during a fire for 45 minutes or more and a function of not causing thermal deterioration due to combustion.

  In the present embodiment, the fire-resistant beam 20 covers the outer peripheral surface 23c other than the surface 23b that covers the structural beam material 21 of the fire-resistant covering material 23 and the auxiliary beam material 22 for the burn-in, and the decorative wood board material 24 is attached. Yes.

  In this embodiment, the structural column material 11 that constitutes the refractory column 10 can be formed using column materials of various materials known as structural woods that constitute a frame structure. The structural column material 11 is preferably a laminated material obtained by laminating a plurality of strip-shaped plate materials made from logs of small-diameter wood, as described in, for example, JP-A-2007-268731, via an adhesive. Can be used. The structural column material 11 is generally distributed as a structural wood, and the structural wood having a width of, for example, 45 mm to 120 mm is used alone or in a stacked manner in the width direction, for example, the width of the structural wood. A rectangular (including square) cross-sectional shape having a width (horizontal width) b2 of about 45 mm to 2000 mm and a width (vertical width) b1 of about 90 to 2000 mm in a direction perpendicular to the width direction of the structural wood. And has a length of about 200 mm to 13000 mm, for example.

  More specifically, as shown in FIG. 2, in the present embodiment, the structural column material 11 is processed to have a height of 555 mm, for example, three first structural woods 11 c having a width of 105 mm. And, for example, two second structural timbers 11d having a width of 120 mm are arranged so as to overlap each other in the width direction of the structural timber, so that, for example, the width b2 is 555 mm and the vertical width b1 is about 555 mm. And having a rectangular cross-sectional shape and a length of 3000 mm. The first structural wood 11c and the second structural wood 11d can be joined together using, for example, a known adhesive, a nail, a screw, or the like, with the side surfaces in close contact with each other. Alternatively, it can be provided in a state where it is not joined using a nail, a screw or the like.

  In addition, the structural column member 11 has a cross-sectional shape large enough to support the weight of the building itself, the wind load, and the like only by the structural column member 11 when the refractory column 10 is subjected to fire heating. The cross section is designed and formed to provide.

  The support pillar material 12 for the burnout that constitutes the refractory column 10 of the present embodiment together with the structural column material 11 is a square material arranged on both sides in the width b2 direction across the structural column material 11, and when the fire is heated It has a thickness (width) sufficient to form a burnout area of the refractory column 10. In addition, the supporting pillar material 12 for the burn-in is surely and effectively exerting the function as a burn-in area, and is strong so that the structural column 11 is not damaged or thermally deteriorated when heated by fire. It is preferable to use a wood having a specific gravity of 0.4 or more so that it can be protected. As the lumber support pillar material 12, as such wood, larch, dafrika larch, bay pine, spruce, todomatsu, Scots pine, cypress, spruce, cedar aggregate, lumber, or veneer laminate is used. In particular, it can be formed using a larch laminated material that is easily available.

  Further, the burnt-in column member 12 is a pair of opposing side surfaces 11a and 11a of the structural column member 11 facing each other in the width b2 direction of the structural column member 11 (the width direction of the structural wood). The side surface portions 11a and 11a are provided with side surface portions 12a having a vertical width similar to the vertical width b1 of the side surface portions 11a and 11a so as to cover each of the side surface portions 11a and 11a. It is formed to have. In other words, in the present embodiment, the supporting pillar material 12 for burnout is generally distributed as structural wood made of wood having a specific gravity of 0.4 or more, such as larch aggregate, and the width is, for example, 45 mm to 120 mm of structural wood is used after being processed so as to have a height of about 90 mm to 2000 mm, which is the same as the vertical width b1 of the side surfaces 11a and 11a of the structural column 11.

  More specifically, in the present embodiment, the supporting pillar material 12 for burnout is processed so that the height is 555 mm, which is the same as the vertical width b1 of the side surfaces 11a and 11a of the structural column material 11. For example, the width is 105 mm, preferably made of larch laminated material. The supporting pillar material 12 for the burnout is a structural column material using, for example, a known adhesive, a nail, a screw or the like in a state where the side surface portion 12a thereof is in close contact with the side surface portions 11a, 11a of the structural column material 11. In addition to being able to be joined to 11, the adhesive can be provided in a state where it is not joined using these adhesives, nails, screws or the like.

  Further, when the refractory pillar 10 is subjected to fire heating, the supporting pillar material 12 for the burn-in is handled as a part that does not support the weight of the building itself, wind load, etc., and the cross-sectional design of the refractory pillar 10 is performed. In addition, the pillar material 12 for the burnout is handled as a part capable of supporting the seismic load and the like by assisting the structural column material 11 in a normal state where the fire column is not heated. Can be performed. This makes it possible to perform a more efficient cross-sectional design of the refractory column 10.

  The fireproof covering material 13 that constitutes the fireproof pillar 10 together with the structural pillar material 11 and the supporting pillar material 12 is a vertical width b1 direction (a direction perpendicular to the width direction of the structural wood) sandwiching the structural pillar material 11. It is a member which is arrange | positioned at both sides and protects so that the influence by fire heating may not reach the other pair of side surface parts 11b and 11b of the structural column 11 at the time of fire heating. The fireproof covering material 13 has a function of not damaging the covered wood for 45 minutes or more during a fire and a function of not causing thermal degradation. The fireproof covering material 13 is a pair of side surface portions 11b, 11b facing the longitudinal width b1 direction of the structural column material 11 which is the other pair of side surface portions 11b, 11b of the structural column material 11 facing each other. The end face portion 12b of the supporting pillar material 12 is attached in a state where the fireproof covering material 13 is won so as to continuously cover the end surface portion 12b. In the present embodiment, the fireproof covering material 13 is in a state in which attachment margins 12c corresponding to the thickness of the decorative wood board material 14 to be described later are left on the outer corners of the end face portions 12b of the burnt support pillars 12 on both sides. The structural column material 11 is continuously attached so as to straddle the side surface portions 11b, 11b of the structural column material 11 and the end surface portions 12b of the burnt support column material 12 on both sides.

  Further, the fireproof covering material 13 is preferably a gypsum board, a reinforced gypsum board, calcium silicate as a member having a function of not damaging the covered wood for 45 minutes or more in the event of a fire and a function of not causing thermal deterioration. It can be formed using board, siding, mortar, concrete, lightweight cellular concrete, wood chip cement board, wood, flame retardant wood, glass wool, rock wool, or phenolic foam. More specifically, in the present embodiment, the fireproof covering material 13 is preferably provided by attaching three reinforced plaster boards 13a having a thickness of 21 mm in a stacked state. As a result, it is possible to overlap the strengthened gypsum board 13a with the joints being shifted, and it is possible to reduce the inflow of heat from the joints.

  Further, in the present embodiment, the fireproof covering material 13 is provided with a fixing screw or a fixing nail (not shown) toward the end surface portion 12b of the supporting pillar material 12 for the burnout disposed on both sides of the structural column material 11, respectively. It is attached by driving in. As a result, it is restrained by the fireproof covering material 13 that the support pillar material 12 for the burnout of the fireproof pillar 10 is deformed by receiving thermal stress in the event of a fire and tries to open outward with respect to the structural pillar material 11. By doing so, it becomes possible to prevent a gap from being generated between the supporting pillar material 12 for burnout and the structural pillar material 11. This also makes it possible to more effectively avoid the structural column material 11 being damaged or thermally deteriorated by combustion.

  In the present embodiment, as described above, the fireproof is continuously attached so as to straddle the other pair of side surface portions 11b, 11b of the structural column material 11 and the end surface portion 12b of the support column material 12 for burnt-off. A decorative wood board material 14 is attached so as to cover the outer peripheral surface 13c of the covering material 13 other than the surface 13b that covers the structural column material 11 and the additional column material 12 for burning. The decorative wood board 14 covers the four sides of the fireproof pillar 10 by covering the fireproof covering 13 when the fireproof covering 13 is preferably formed of a non-wood member such as a reinforced gypsum board 13a. It is attached to make the entire peripheral surface of the outer peripheral surface of the wood material. This makes it possible to improve the design properties of the refractory column 10. The decorative wood board material 14 can be formed using, for example, a laminated wood, lumber, plywood, or single board laminate as a known cosmetic wood board having a thickness of about 5 mm to 20 mm.

  The decorative wood board 14 has a long side portion 14a and a long side portion 14a as a shape that simultaneously covers the outer peripheral surface 13c of the fireproof covering material 13 other than the surface 13b that covers the structural column material 11 and the additional column material 12 for burnt-off. It has a horizontally long U-shaped cross-sectional shape composed of short side portions 14b on both sides projecting perpendicularly to each other. The decorative wood board material 14 is integrally attached along the outer peripheral surface 13c of the fireproof covering material 13 through, for example, an adhesive. As described above, the fireproof covering material 13 is provided on the outer corner portions of the end surface portion 12b of the burnt-off support pillar material 12 on both sides, leaving the mounting margin 12c, and the mounting margin 12c is provided in the portion of the mounting margin 12c. The short side portions 14b on both sides of the U-shaped cross section of the decorative wood board material 14 are attached. This makes it possible to attach the decorative wood board material 14 in a state where the short side portion 14b of the decorative wood board material 14 is arranged flush with the side surface portion 12a on the outer side of the burner support post material 12. This also makes it possible to further improve the design of the refractory column 10.

  The decorative wood board 14 does not necessarily need to be formed in advance with a long side portion 14a having a laterally U-shaped cross-sectional shape and a short side portion 14b on both sides before being attached. 14a and the short side part 14b can also be attached separately so that each may be along the outer peripheral surface 13c of the structural column material 11. FIG. Moreover, in the joint location arrange | positioned in the short side part 14b of the both sides of the U-shaped cross-sectional shape of the decorative wooden board | plate material 14 on the side surface part 12a of the outer side of the support pillar material 12 for burners, it is in the said joint location. It is also possible to provide a notch for an elongated accent having a concave cross-sectional shape by extending along the circumferential direction. This makes it possible to add an accent to the outer peripheral surface of the refractory column 10 made of a wooden material, and to further improve the design of the refractory column 10.

  In this embodiment, the structural beam material 21 constituting the refractory beam 20 can be formed using column materials made of various materials, which are known as structural woods constituting the frame structure, like the structural column material 11. it can. As with the structural column material 11, the structural beam material 21 is preferably a plurality of strip-shaped plate materials made from logs of small-diameter wood, as described in, for example, Japanese Patent Application Laid-Open No. 2007-268731. It can form using the laminated material obtained by laminating | stacking. The structural beam material 21 is generally distributed as structural wood, and the structural wood having a width of, for example, 45 mm to 120 mm is used alone or overlapped in the width direction, for example, the width of the structural wood. A rectangular (including square) cross-sectional shape having a width (horizontal width) b4 of about 45 mm to 2000 mm and a width (vertical width) b3 of about 90 mm to 2000 mm in a direction perpendicular to the width direction of the structural wood. And has a length of about 200 to 13000 mm, for example.

  More specifically, as shown in FIG. 3, the structural beam member 21 is processed to have a height of 1110 mm in the present embodiment, for example, three third structural woods 21c having a width of 105 mm. And, for example, by arranging two fourth structural woods 21d having a width of 120 mm so as to overlap each other in the width direction of the structural wood, for example, the width b4 is 555 mm and the vertical width b3 is about 1110 mm. And having a rectangular cross-sectional shape and a length of 4000 mm. The third structural wood 21c and the fourth structural wood 21d can be joined together using, for example, a known adhesive, a nail, a screw, or the like, with the side surfaces in close contact with each other. Alternatively, it can be provided in a state where it is not joined using a nail, a screw or the like.

  In addition, the structural beam member 21 has a cross-sectional shape large enough to support the weight of the building itself, the wind load, and the like only by the structural beam member 21 when the fireproof beam 20 is subjected to fire heating. The cross section is designed and formed to provide.

  The auxiliary beam member 22 for the burnout constituting the refractory beam 20 of the present embodiment together with the structural beam member 21 is a square member disposed on both sides in the width b4 direction of the structural beam member 21 and at the time of fire heating. It has a thickness (width) sufficient to form a burnout area of the refractory column 20. In addition, the burn-in beam member 22 ensures the function as a burn-in region reliably and effectively, as well as the burn-in column member 12, and the structural beam member 21 during fire heating. It is preferable to use a wood having a specific gravity of 0.4 or more so that it can be firmly protected from damage or thermal deterioration. The burnt beam material 22 is a collection of larch, dafrika larch, bay pine, spruce, todomatsu, red pine, cypress, spruce, or cedar as the burnt column material 12. It can be formed using a lumber, lumber, or a single-layer laminated material, and in particular, can be formed using an easily available larch aggregate.

  Further, the auxiliary beam member 22 for the burn-in can be configured so as to cover the entire pair of side surface portions 21a and 21a facing each other in the width b4 direction of the structural beam material 21 (width direction of the structural wood). The side portions 21a, 21a are provided with side portions 22a having a vertical width similar to the vertical width b3 of the side portions 21a, and are formed to have a rectangular (including square) cross-sectional shape. That is, in the present embodiment, the auxiliary beam material 12 for burnout is generally distributed as structural wood made of wood having a specific gravity of 0.4 or more, such as larch laminated wood, and the width is, for example, 45 mm to 120 mm of structural wood is used after being processed to have a height of about 90 mm to 2000 mm, which is the same as the vertical width b3 of the side portions 21a and 21a of the structural beam member 21.

  More specifically, in the present embodiment, the auxiliary beam material 22 for the burn-in is processed so that the height is 1110 mm, which is the same as the vertical width b3 of the side surface portions 21a and 21a of the structural beam material 21. For example, the width is 105 mm, preferably made of larch laminated material. In the state where the side beam 22a is closely attached to the side surfaces 21a and 21a of the structural beam material 21, the supporting beam material 22 for the burnout is a structural column material using, for example, a known adhesive, nail, screw or the like. In addition to being able to be joined to 21 as a unit, it can also be provided in a state where it is not joined using these adhesives, nails, screws or the like.

  When the fireproof beam 20 is subjected to fire heating, the burnt beam member 22 is handled as a portion that does not support the weight of the building itself or wind load, and the cross section design of the fireproof beam 20 is performed. In addition, the burn-in beam member 22 is handled as a part capable of supporting the seismic load and the like by assisting the structural beam member 21 in a normal state where the fire beam is not heated. Can be performed. This makes it possible to perform a more efficient cross-sectional design of the refractory beam 20.

  The fire-resistant covering material 23 that constitutes the fire-resistant beam 20 together with the structural beam material 21 and the additional beam material 22 for the burnout is disposed on the lower surface portion 21b of the structural beam material 21. This is a member that protects the lower surface portion 21b of the member 21 from reaching the lower surface portion 21b. The fire-resistant covering material 23 has a function of preventing damage and thermal deterioration of the covered wood from the fired pillar 10 by burning for 45 minutes or more in the same manner as the fire-resistant covering material 13 of the fire-proof pillar 10. The fire-resistant covering material 23 is in a state where the fire-resistant covering material 23 wins by continuously concealing the lower surface portion 21b of the structural beam material 21 and the lower surface portions 22b of the auxiliary beam members 22 for both sides of the flame. It is attached with. In the present embodiment, the fireproof covering material 23 is in a state in which attachment margins 22c corresponding to the thickness of the decorative wood board material 24 to be described later are left on the outer corners of the lower surface portion 22b of the burnt beam support material 22 on both sides. Further, the structural beam member 21 is continuously attached so as to straddle the lower surface portion 21b of the structural beam member 21 and the lower surface portion 22b of the supplementary beam member 22 for both sides.

  In the present embodiment, a known floor member (not shown) having a predetermined fire resistance performance is attached to the upper surface portion of the fire resistant beam 20 so as to cover the upper surface of the fire resistant beam 20. The influence of the fire heating during heating does not reach the structural beam material 21 from the upper surface side. As a result, it is possible to effectively prevent the structural beam material 21 from being damaged or thermally deteriorated by combustion without providing a fireproof coating material on the upper surface portion of the fireproof beam 20. ing.

  Further, the fireproof covering material 23 is preferably a member having a function of not damaging the covered wood for 45 minutes or more in the event of a fire and a function of not causing thermal deterioration, similarly to the fireproof covering material 13 of the fireproof pillar 10. It can be formed using gypsum board, reinforced gypsum board, calcium silicate board, siding, mortar, concrete, lightweight cellular concrete, wood chip cement board, wood, flame retardant wood, glass wool, rock wool, or phenolic foam. More specifically, in the present embodiment, the fireproof covering material 13 is preferably provided by attaching three reinforced plaster boards 23a having a thickness of 21 mm in a stacked state. As a result, it is possible to overlap the gypsum board 23a with the joints being shifted, and it is possible to reduce the inflow of heat from the joints.

  Further, in the present embodiment, the fireproof covering material 23 is provided with a fixing screw or a fixing screw (not shown) toward the lower surface portion 22b of the auxiliary beam material 22 for the burnout disposed on both sides of the structural beam material 21, respectively. It is attached by driving in. As a result, it is constrained by the fire-resistant covering material 23 that the auxiliary beam member 22 for the burn-in of the fire-resistant beam 20 is deformed by receiving a thermal stress in the event of a fire, and thus tries to open outward with respect to the structural beam material 21. By doing so, it becomes possible to prevent a gap from being generated between the burn-in beam member 22 and the structural beam member 21. This also makes it possible to more effectively avoid the structural beam material 21 from being damaged or thermally deteriorated by combustion. The fireproof covering material 23 is arranged in a state of being superior to the burnt beam member 22, and is attached by driving a fixed screw or a fixed screw toward the lower surface portion 22b of the burner beam member 22. Therefore, the work for attaching the fireproof covering material 23 can be smoothly performed by the work from below the structural beam material 21 and the auxiliary beam material 22 for the burn-in space installed in advance at the construction site.

  In the present embodiment, as described above, the structural beam material 21 of the fireproof covering material 23 that is continuously attached so as to straddle the lower surface portion 21b of the structural beam material 21 and the lower surface portion 22b of the support pillar material 22 for the burn-in margin. A decorative wood board 24 is attached so as to cover the outer peripheral surface 23c other than the surface 23b covering the burnt beam material 22 for burning. The decorative wood board material 24 is similar to the decorative wood board material 14 of the fireproof pillar 10 when the fireproof coating material 23 is preferably formed of a non-wood member such as a reinforced gypsum board 23a. It is attached to cover the entire surface of the three sides except the upper surface of the fireproof beam 20 as an outer peripheral surface made of a wood material. This makes it possible to improve the design of the fireproof beam 20. The decorative wood board material 24 can be formed using, for example, a laminated wood, lumber, plywood, or single board laminated material as a known cosmetic wood board material having a thickness of about 5 mm to 20 mm.

  The decorative wood board material 24 has a long side portion 24a and a long side portion 24a in a shape that simultaneously covers the outer peripheral surface 23c of the fireproof covering material 23 other than the surface 23b that covers the structural beam material 21 and the auxiliary beam material 22 for burning. It has a horizontally long U-shaped cross-sectional shape composed of short side portions 24b on both sides projecting perpendicularly to each other. The decorative wood board 24 is integrally attached along the outer peripheral surface 23c of the fireproof covering material 23, for example, via an adhesive or the like. As described above, the fireproof covering material 23 is provided on the outer corner portions of the lower surface portion 22b of the burnt beam member 22 on both sides, leaving the mounting margin 22c, and the mounting margin 22c is provided on the portion of the mounting margin 22c. The short side portions 24b on both sides of the U-shaped cross-sectional shape of the decorative wood board 24 are mounted. As a result, it is possible to attach the short side portion 24b of the decorative wood board material 24 so as to be flush with the side surface portion 22a on the outer side of the auxiliary beam material 22 for burnt. By this, it becomes possible to further improve the design of the fireproof beam 20.

  The decorative wood board 24 does not necessarily need to have the long side portion 24a of the horizontally long U-shaped cross-sectional shape and the short side portions 24b on both sides integrally formed in advance before mounting, and the long side portion 24a The short side portions 24b can be attached separately so as to be along the outer peripheral surface 23c of the structural beam member 21. Moreover, in the joint location arrange | positioned in the short side part 24b of the both sides of the U-shaped cross-sectional shape of the decorative wooden board material 24 on the side surface part 22a of the outer side pillar material 22 for burnt off, the said joint location It is also possible to provide a notch for an elongated accent having a concave cross-sectional shape by extending along the circumferential direction. As a result, an accent can be added to the outer peripheral surface of the fireproof beam 20 made of a wooden material, and the design of the fireproof beam 20 can be further improved.

  And according to the refractory pillar 10 or the refractory beam 20 of the present embodiment having the above-described configuration, generally distribute the pillars and beams that are provided with non-damage properties in fire resistance and performance, taking into account the burn-in part. It can be formed at low cost and efficiently using existing structural wood.

  That is, the refractory column 10 of the present embodiment has a rectangular cross section disposed so as to cover the structural column member 11 having a rectangular cross-sectional shape and the pair of side surface portions 11a, 11a facing each other. A pair of burn-in support pillars 12 having a shape, the other pair of side parts 11b, 11b of the structural pillar 11 opposite to each other, and end face parts 12b of the burn-in support pillars 12 on both sides are continuously covered. The fire-resistant coating material 13 is provided that has a function of preventing damage to the wood by burning and a function of preventing thermal degradation of the wood of the cover-covered portion that is attached in a concealed manner for 45 minutes or more in the event of a fire. In addition, the refractory beam 20 according to the present embodiment has a rectangular cross-sectional shape that is disposed so as to cover the structural beam member 21 having a rectangular cross-sectional shape and the pair of side surfaces 21a and 21a facing each other. A pair of burnt beam members 22, a lower surface part 21b of the structural beam material 21, and a lower surface part 22b of the burner beam material 22 on both sides are attached so as to cover them continuously. It includes a fireproof covering material 23 that has a function of not damaging a part of timber for 45 minutes or more in a fire and a function of not causing thermal degradation.

  Therefore, according to the refractory column 10 or the refractory beam 20 of the present embodiment, the structural column material 11 and the structural beam material 21 having a rectangular cross-sectional shape, and the supplemental column material 12 for the burn-in having a rectangular cross-sectional shape and the burn-in margin. The accessory beam material 22 is generally formed using structural wood that is generally distributed and having a width of, for example, 45 mm to 120 mm, and these structural woods are used singly or in combination. It becomes possible. In addition, the structural column material 11 and the structural beam material 21 are constructed by using only the structural column material 11 and the structural beam material 21 when the refractory column 10 and the refractory beam 20 are heated by fire. The cross section is designed to have sufficient strength to support a load or the like, and the support pillar material 12 for the burnout and the support beam material 22 for the burnout form a burnout area of the fireproof column 20 when the fire is heated. Thickness (width) is sufficient, and the fireproof coverings 13 and 23 have a function of not damaging the covered wood for 45 minutes or more during combustion and a function of not causing thermal deterioration. Therefore, by designing the cross-section by combining these members, even when the exposed part is directly heated and burned, the fireproof column 10 considering the burnout part having non-damage in fireproofing performance. Or fireproof beam 20 It is possible to and efficiently formed to the valence.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the fireproof covering material does not necessarily have to be attached by driving a fixing screw or a fixing nail toward the end surface portion of the supporting pillar material for the burn-in, and may be attached using an adhesive or the like. . When the fireproof covering material is formed of, for example, a wooden material, it is not always necessary to attach a decorative wood board material to cover the outer peripheral surface of the fireproof covering material. A building having a fire resistance of 45 minutes or more quasi-refractory structure in which the refractory columns and beams of the present invention are used is not necessarily a wooden building, and in a building made of steel or reinforced concrete, for example, Japanese style When providing a living room space, the refractory pillar or refractory beam of the present invention may be employed.

  Moreover, the fireproof pillar and fireproof beam of the present invention are not necessarily required to have a cross-sectional shape as in the above embodiment. For example, as shown in FIG. 4, the structural pillar 11 ′ is formed using a single structural wood having a square cross-sectional shape, and the burnt-off pillar 12 ′ is a square similar to the structural pillar 11 ′. It can also be formed using structural wood having a cross-sectional shape of For example, as shown in FIG. 5, the structural beam 21 ′ is formed using a single structural wood, and the auxiliary beam 22 ′ for the burn-in is provided with the same cross-sectional shape as the structural column 21 ′. It can also be formed using. For example, as shown in FIG. 6, the upper end portion of the structural beam member 21 ″ is disposed on the ceiling back portion 30, and fire heating is not applied to the ceiling back portion, so that the beam attached for the burnout of the ceiling back portion. And the fireproof coating can be omitted.

DESCRIPTION OF SYMBOLS 10 Fireproof pillar 11 Structural column material 11a One pair of side surface part 11b which opposes The other pair of side surface part 11c which opposes The 1st structural wood 11d The 2nd structural wood 12 Composting pillar material 12a Side surface part 12b 12c Mounting margin 13 Fire-resistant covering material 13a Reinforced gypsum board 13b Surface 13c covering the supporting pillar material for the burn-out outer peripheral surface 14 Cosmetic wood board material 14a Long side portion 14b Short side portion 20 Fire-resistant beam 21 Structural beam material 21a Side surface portion 21b Lower surface portion 21c Third structural wood 21d Fourth structural wood 22 Combustion pillar material 22a Side surface portion 22b Lower surface portion 22c Mounting margin 23 Fire-resistant covering material 23a Reinforced gypsum board 23b Surface covering the supplementary pillar material 23c Peripheral surface 24 Wood board material for makeup 24a Long side part 24b Short side part

Claims (12)

It is a fireproof column used in a building with a fireproof performance of 45 minutes or more.
A rectangular cross section comprising a structural column member having a rectangular cross-sectional shape, and a side surface portion having a width similar to the width of the side surface portion, each disposed covering a pair of opposite side surface portions of the structural column material A pair of burn-in support pillars having a shape, and the other pair of opposite side faces of the structural pillar and the end face parts of the burn-in support pillars on both sides are attached so as to be continuously covered. A fireproof pillar comprising a fireproof covering material having a function of preventing damage caused by combustion and a function of not causing thermal degradation of the covered and concealed wood during a fire for 45 minutes or more.   2. The fireproof coating according to claim 1, wherein the fireproof covering material is attached by driving a fixing screw or a fixing nail toward an end surface portion of the supporting pillar material disposed on both sides of the structural column material. Pillar.   The fireproof pillar according to claim 1 or 2, wherein a decorative wood board material is attached so as to cover an outer peripheral surface of the fireproof covering material other than a surface covering and covering the structural pillar material and the burner support pillar material.   The refractory pillar according to any one of claims 1 to 3, wherein the additional pillar material for burnt is formed using wood having a specific gravity of 0.4 or more.   The burner support pillar material is formed using a laminated material, lumber, or a single-plate laminated material of larch, dafrika larch, beech pine, spruce, todomatsu, Scots pine, cypress, spruce, or cedar Item 5. A fireproof pillar according to item 4.   The fireproof covering material is gypsum board, reinforced gypsum board, calcium silicate board, siding, mortar, concrete, lightweight cellular concrete, wood cement board, wood, flame retardant wood, glass wool, rock wool, or phenol foam. The refractory pillar according to any one of claims 1 to 5, wherein the refractory pillar is formed. A fire-resistant beam used in a building having a fire resistance of 45 minutes or more,
A rectangular cross-section, comprising a structural beam material having a rectangular cross-sectional shape, and a side surface portion having a vertical width similar to the vertical width of the side surface portion, each disposed covering a pair of opposing side surface portions of the structural beam material A pair of burn-in beam members having a shape, and a lower surface portion of the structural beam material and a lower surface portion of the burn-in beam member on both sides are attached so as to continuously cover them. A fire-resistant beam comprising a fire-resistant covering material having a function of not destroying a part of wood during a fire for 45 minutes or more by a combustion and a function of not causing thermal deterioration.   The fireproof covering material according to claim 7, wherein the fireproof covering material is attached by driving fixed screws or fixed nails toward a lower surface portion of the auxiliary beam material for the burn-in beam disposed on both sides of the structural beam material. Beams.   The fireproof beam according to claim 7 or 8, wherein a decorative wood board material is attached so as to cover an outer peripheral surface of the fireproof covering material other than a surface that covers the structural beam material and the auxiliary beam material for burning.   The fire-resistant beam according to any one of claims 7 to 9, wherein the burnt beam material is formed using wood having a specific gravity of 0.4 or more.   The burnt beam material is made of larch, luffica larch, bay pine, spruce pine, todomatsu, scots pine, cypress, spruce, or cedar laminated timber, lumber, or a single-plate laminated material. Item 10. A fire-resistant beam according to item 10.   The fireproof covering material is gypsum board, reinforced gypsum board, calcium silicate board, siding, mortar, concrete, lightweight cellular concrete, wood cement board, wood, flame retardant wood, glass wool, rock wool, or phenol foam. The fireproof beam according to any one of claims 7 to 11, wherein the fireproof beam is formed.

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