JP2016030896A - Fire resistive glued laminated timber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire resistive glued laminated timber capable of achieving the trimming down of a component.SOLUTION: The fire resistive glued laminated timber includes: a core material 12 which is constituted of a glued laminated timber and supports load; a first burning-stop layer 16 which is formed outside the core material 12, has a heat insulation property and constituted of a fire restive timber; and a joint component 20 which is provided at the part of the first burning-stop layer 16, the part being in contact with a joint, and increases in thickness by being heated to exhibit a heat insulation property.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fireproof laminated material including a core material made of a laminated material for supporting a load, and a flame stop layer provided outside the core material.

Wood generally has many advantages. The main ones are humidity control, impact safety, heat insulation, reduction of mental and physical disorders, relaxation effect by fragrance, improvement of excitement, and improvement of emotional stability of children. In addition, compared with existing members such as steel frames, it is effective in reducing CO ₂ as a total, and effective use is an urgent need. In particular, the laminated lumber using a single board manufactured from thinned lumber or the like is likely to have uniform structural performance, can be supplied relatively stably, and is expected to be further utilized.

  On the other hand, the biggest weakness of wood, such as laminated wood, is that it burns. For this reason, for the wooden members such as walls, floors, columns, and beams, the burning allowance design has been conventionally performed in consideration of the burning allowance. Moreover, the method of increasing the thickness of the member is also effective for suppressing the temperature rise on the back surface not facing the fire. However, the correspondingly large member tends to induce high cost, increased weight, and reduced effective area of the chamber.

  Furthermore, the fire resistance performance of 1 hour or more has been required to stop, and the standard has become stricter. For this reason, it is difficult to cope only by increasing the thickness of the wooden member. Thus, for example, as shown in FIG. 11, a method in which a burning stop layer 2 made of a mortar layer is inserted between the thickening portion of the burning allowance layer 3 and the load supporting layer 1 as a core material (for example, a patent) As shown in FIG. 12, and as shown in FIG. 12, a method in which the same gypsum board 4 is repeatedly stacked between the combustion allowance layer 3 and the load supporting layer 1 as the core (for example, Patent Document 2) has been proposed, and it is now possible to secure a complete stop.

Japanese Patent No. 4,857,034 Japanese Patent No. 4359275

  However, even with the methods shown in FIGS. 11 and 12, it is inevitable that the members become large, and problems such as high cost, increased weight, and reduced effective area of the room cannot be solved. For this reason, it is necessary to develop a fire-resistant laminated material that can reduce the member's slimming by improving the fire-resistant performance, and can solve problems such as high cost, increased weight, and reduced effective area of the room. It was.

  This invention is made | formed in view of the above, Comprising: It aims at providing the fireproof laminated material which can aim at slimming of a member.

  In order to solve the above-described problems and achieve the object, the fireproof laminated material according to the present invention is provided on the outer side of the core material composed of the laminated material that supports the load, has heat insulation, and is nonflammable. It is provided with the 1st flame stop layer which consists of wood, and the joint member which is provided in the part which contact | connects the joint of a 1st flame stop layer, and is thickened by heating and expresses heat insulation.

  In addition, in the above-described invention, another fireproof laminated material according to the present invention is further provided with a second dead end layer made of an inorganic material having an endothermic property and a heat insulating property, provided on the outer side of the core material, and the second dead end layer. The layer is provided inside the first flame stop layer, and the joint member is provided in a second flame stop layer in contact with the joint of the first flame stop layer.

  Moreover, the other fireproof laminated material which concerns on this invention is further provided with the finishing material provided in the outer side of a 1st flame stop layer in the invention mentioned above.

  Another fireproof laminated material according to the present invention is characterized in that, in the above-described invention, the joint member is formed of a sheet-like or liquid material.

  According to the fireproof laminated material according to the present invention, the core material made of the laminated material that supports the load, the first dead end layer that is provided on the outer side of the core material, has heat insulation properties, and is made of incombustible wood, and the first A joint member that is provided at a portion of the flame stop layer that contacts the joint and that is thickened by heating to exhibit heat insulation; Here, it can be said that a 1st flame stop layer is a coating layer which has fire resistance, and has a function which delays the progress of the combustion to an inner core material. In addition, the joint member has a function of filling a gap that may occur in the joint of the first flame stop layer due to heat shrinkage or collapse of the first flame stop layer made of noncombustible wood. The joint member closes the joint gap due to thermal contraction or collapse of the first dead end layer and maintains the heat insulation performance of the first dead end layer. As a result, the thickness of the first dead end layer is reduced. In addition, it is possible to ensure heat insulation in the event of a fire, for example, to ensure the performance of fire resistance for at least 1 hour. In addition, since the thickness of the flame stop layer can be reduced, the cross-sectional area of the entire member can be reduced in a fire-resistant specification member having a core material having the same cross-sectional area. Therefore, according to the present invention, there is an effect that it is possible to provide a fireproof laminated material having a predetermined fireproof performance and a slimmed member.

  Further, according to another fireproof laminated material according to the present invention, the second firestop layer further includes a second firestop layer provided on the outer side of the core material and made of an inorganic material having endothermic and heat insulation properties. The joint member is provided inside the first flame stop layer, and the joint member is provided in the second flame stop layer in contact with the joint of the first flame stop layer. Therefore, even when the joint member is provided in the second flame stop layer, the first member is provided. There is an effect that it is possible to fill a gap between joints due to heat shrinkage or collapse of the flame-stopping layer.

  Moreover, according to the other fireproof laminated material which concerns on this invention, since it further comprises the finishing material provided in the outer side of a 1st flame stop layer, even when it is a case where a finishing material is provided in the outer side of the 1st flame stop layer The joint member can fill the joint gap due to heat shrinkage or collapse of the first dead end layer.

  Further, according to another fireproof laminated material according to the present invention, the joint member is made of a sheet or liquid, and therefore when the joint member is provided in a portion in contact with the joint of the first flame stop layer, the first There is an effect that it can be easily applied by sticking or applying to the portion of the flame-stopping layer in contact with the joint.

FIG. 1 is a schematic cross-sectional view showing Embodiment 1 of the fireproof laminated material according to the present invention. FIG. 2 is a schematic perspective sectional view showing the first embodiment of the fireproof laminated material according to the present invention. FIG. 3 is a side sectional view for explaining the operation of the first embodiment of the fireproof laminated material according to the present invention. FIG. 4 is a sectional side view for explaining the operation of the first embodiment of the fireproof laminated material according to the present invention. FIG. 5 is a sectional side view for explaining the operation of the first embodiment of the fireproof laminated material according to the present invention. FIG. 6 is a schematic cross-sectional view showing Embodiment 2 of the refractory laminated material according to the present invention. FIG. 7 is a schematic perspective sectional view showing Embodiment 2 of the fireproof laminated material according to the present invention. FIG. 8: is a schematic sectional drawing which shows the modification of Embodiment 2 of the fireproof laminated material which concerns on this invention. FIG. 9 is a schematic cross-sectional view showing a modification of the first embodiment of the fireproof laminated material according to the present invention. FIG. 10: is a schematic sectional drawing which shows the modification of Embodiment 2 of the fireproof laminated material which concerns on this invention. FIG. 11 is a cross-sectional view illustrating an example of a member described in Patent Document 1. FIG. 12 is a cross-sectional view illustrating an example of a member described in Patent Document 2.

  Hereinafter, embodiments (Embodiments 1 and 2) of a fireproof laminated material according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

[Embodiment 1]
First, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1 and FIG. 2, the fireproof laminated material 10 according to the first embodiment includes a core material 12, a second dead end layer 14, a first dead end layer 16, a finishing material 18, and joints. The member 20 is provided.

  The core material 12 is made of a laminated material (wood) that supports a load. As the core material 12, it can comprise using the general laminated material which consists of a cedar, a larch etc., for example.

  The second dead end layer 14 is a coating layer having fire resistance, and is provided on the outer side of the core material 12 and made of an inorganic material having endothermic properties and heat insulation properties. In the event of a fire, the second dead end layer 14 prevents heat transfer to the adjacent inner core member 12 even after the outer first dead end layer 16 has lost its function due to the fire. In addition, the core material 12 has a function of not carbonizing or burning, and exhibits an effect of suppressing heat conduction to the core material 12. As the inorganic material forming the second dead end layer 14, a board-like material such as a reinforced gypsum board, a gypsum board, or a calcium plate (calcium silicate plate) can be used. Moreover, the thickness can be suitably adjusted according to a use. When the thickness is increased, the effect of suppressing heat conduction is improved. These boards may be stacked to a predetermined thickness. Here, materials such as reinforced gypsum board, gypsum board and calcium silicate board (calcium silicate board) can be obtained at a very low price, and have high heat insulation and heat absorption, and therefore suitable as the second burn-out layer 14. It is.

  The first flame stop layer 16 is a coating layer having fire resistance, and is provided outside the second flame stop layer 14. In the event of a fire, the first dead end layer 16 has a function of delaying the progress of combustion to the adjacent second second dead end layer 14 due to its heat insulation, and conducts heat to the second dead end layer 14. Demonstrate the effect. As the first flame stop layer 16, it is possible to use a non-combustible material that does not easily burn, for example, a non-combustible wood in which a chemical such as boric acid is impregnated into wood. Moreover, although the thickness of the 1st flame stop layer 16 can be suitably adjusted according to a use, it is preferable to set it as about 15 mm-45 mm, for example, and it is more preferable to set it as about 30 mm.

  In this way, the above-mentioned flame-retardant layers 14 and 16 can be referred to as a fire-resistant coating layer, and the outer first flame-retardant layer 16 has a function of delaying the progress of combustion to the inner second flame-retardant layer 14. have. Further, the inner second flame stop layer 14 prevents the heat transfer to the core material 12 after the outer first flame stop layer 16 loses the above function due to a fire, and does not carbonize or burn the core material 12. It has a function.

  The finishing material 18 is made of wood and is provided to give a wood texture to the outside of the first flame stop layer 16. Therefore, the outer surface 18a of the refractory laminated material 10 has a wood texture or grain-like appearance due to the finishing material 18. The finishing material 18 is preferably a woody material such as wood or laminated wood, but a building finishing material such as a cloth material may be used. The thickness of the finishing material 18 is preferably about 3 mm to 30 mm, for example, but of course, it may be made thinner so that it hardly functions as a burning allowance.

  The joint member 20 is provided in a portion in contact with the horizontal joint 22 (joint) of the first dead end layer 16, and is thickened by heating to express heat insulation. The joint member 20 has a function of filling a gap that may occur in the horizontal joint 22 of the first flame stop layer 16 due to heat shrinkage or collapse of the first flame stop layer 16 made of noncombustible wood. As a result of the joint member 20 closing the gap between the horizontal joints 22 due to thermal contraction or collapse of the first flame stop layer 16 and maintaining the heat insulation performance of the first flame stop layer 16, the first flame stop layer 16 is maintained. Even if the layer thickness is reduced, it is possible to ensure heat insulation in the event of a fire. For example, it is possible to ensure a fire resistance performance of at least 1 hour.

  The operation of the joint member 20 will be described with reference to FIGS. FIG. 3 is a side sectional view of the refractory laminated material when there is no joint member 20 and a gap 24 is generated in the horizontal joint 22 of the first dead end layer 16 between the upper and lower sides due to heat shrinkage or collapse, etc. 1 is a side cross-sectional view of a refractory laminated material before heating when a joint member 20 is provided in advance at a portion in contact with the horizontal joint 22 of the flame-stopping layer 16, and FIG. . In both figures, the finish material 18 is not shown.

  As shown in FIG. 3, if there is no joint member 20, a vertical gap 24 is generated in the horizontal joint 22 of the first dead end layer 16 due to thermal contraction or collapse. The gap 24 may have a height of about 20 mm, for example. Due to the gap 24, the heat insulating properties of the first dead end layer 16 and the second dead end layer 14 may be reduced, and a situation may occur in which the core material 12 is carbonized. In order to prevent such a situation, measures such as increasing the thickness of the second flame stop layer 14 may be taken. However, such a countermeasure causes an increase in the member cross-sectional area. Therefore, as shown in FIG. 4, the joint member 20 of the present invention is provided in a recess formed by cutting a portion of the first dead end layer 16 in contact with the horizontal joint 22 or the like. At the time of heating, as shown in FIG. 5, the joint member 20 increases in thickness and acts to fill a gap due to heat shrinkage, collapse, etc., so the joint member 20 prevents the occurrence of the gap and the first flame stop layer. This contributes to maintaining the heat insulation performance of 16, and maintaining the size of the slimmed member.

  The joint member 20 can be formed of a sheet-like or liquid foamable heat insulating material that foams when heated and remarkably increases its thickness and exhibits heat insulation. In this way, when the joint member 20 is provided on the portion of the first flame stop layer 16 in contact with the horizontal joint 22, it is easily constructed by sticking or applying to the portion of the first flame stop layer 16 in contact with the horizontal joint 22. can do. Note that the sheet-like or liquid joint member 20 may be applied so as to be embedded in, for example, about 1 to 5 mm in a portion in contact with the lateral joint 22 of the first flame stop layer 16.

  As shown in the upper left part of FIGS. 4 and 5, the joint member 20 may be provided at the upper and lower ends of the upper and lower first dead ends 16 facing each other at the horizontal joint 22. Moreover, as shown in the lower left part of FIG. 4 and FIG. 5, you may provide only in the upper end part of the lower 1st flame stop layer 16 among the upper and lower 1st flame stop layers 16 faced and arranged by the horizontal joint 22. . That is, you may provide in the upper end part or lower end part of either one of the upper and lower 1st flame stop layers 16. Even in this case, a gap due to heat shrinkage or collapse can be filled.

  Moreover, as shown in the upper right part of FIG. 4 and FIG. 5, the joint member 20 does not have the finishing material 18 on the outer side of the 1st flame stop layer 16, and the outer surface of the 1st flame stop layer 16 functions as a finishing material. In the case of serving as both, it may be partially provided on the inner side of the first flame stop layer 16 (side closer to the core material 12). In this way, the joint member 20 becomes invisible from the outer surface of the first flame stop layer 16. Further, as shown in the lower right part of FIGS. 4 and 5, a part of the outer surface of the second dead end layer 14 that is in contact with the first dead end layer 16 is cut instead of the first dead end layer 16. Then, a recess may be formed, and the joint member 20 may be provided in the recess. In this case, a sheet-like material or a liquid material corresponding to the height of the gap assumed at the time of thermal contraction or collapse may be embedded. Even in this case, a gap due to heat shrinkage or collapse can be filled.

  Thus, according to the fireproof laminated material 10 of the first embodiment, the flame stop layer is composed of two layers having different functions and materials by the second flame stop layer 14 and the first flame stop layer 16. A joint member 20 is provided at a portion in contact with the joint of the flame stop layer 16. According to this configuration, the joint member 20 prevents the opening (gap) of the joint of the first flame stop layer 16 from being generated, and the heat insulation performance of the first flame stop layer 16 is maintained, so that the second flame stop layer 16 is maintained. Even if the layer thicknesses of 14 and the first flame stop layer 16 are reduced, it is possible to ensure heat insulation in the event of a fire, for example, to ensure fire resistance performance for at least one hour. Moreover, since the thickness of the whole flame stop layer can be reduced, the cross-sectional area of the entire member can be reduced in a fire-resistant member having a core material having the same cross-sectional area. Therefore, according to the first embodiment, it is possible to provide a fireproof laminated material having a predetermined fireproof performance and a slimmed member.

  Furthermore, according to the first embodiment, the area of the wood portion by the core material occupying the cross-sectional area of the fire-resistant laminated material can be increased. A lot of wood can be used for the material part. Moreover, the fireproof laminated material of the first embodiment can be processed on site, has good workability, and does not impair the wood texture. If this fireproof laminated material is used, the freedom degree of a wooden frame can be raised. Moreover, since an inorganic incombustible wood can be used as the 1st flame stop layer 16 provided in an outer side, a weather resistance is good. Moreover, since the reinforcement | strengthening gypsum board which can be procured at low cost, a gypsum board, a calcium silicate board (calcium silicate board), etc. can be used as the 2nd flame stop layer 14, production cost can be held down at low cost. Therefore, according to the first embodiment, it is possible to reduce the thickness of the member and solve problems such as high cost, increased weight, cross-sectional area of the structural material, and reduction of the effective area of the chamber. .

[Embodiment 2]
Next, a second embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 6 and 7, the fireproof laminated material 100 according to the second embodiment includes a core material 12, a first dead end layer 16 provided on the outer side of the core member 12, and a first dead end layer 16. And a joint member 20 provided at a portion in contact with the horizontal joint 22. Since the core material 12 and the joint member 20 are the same as those described in the first embodiment, a detailed description thereof will be omitted.

  The first dead end layer 16 of the second embodiment is a coating layer having fire resistance, has heat insulation, and also functions as a finishing material that gives the fire resistant laminated material 100 a grainy appearance and wood texture. Also serves as. Therefore, the outer surface 16 a of the fireproof laminated material 100 has a wood grain appearance due to the first dead end layer 16. If necessary, a finish may be provided on the outside. The first flame stop layer 16 is made of a non-combustible material that does not burn easily, such as a wood-grained appearance or wood texture on the outer surface side, for example, non-combustible wood that has been treated by impregnating wood with a chemical such as boric acid. Can do.

  The first flame stop layer 16 can be said to be a coating layer having fire resistance, and has a function of delaying the progress of combustion to the inner core material 12. As described above, according to the fireproof laminated material 100 of the second embodiment, the first flame stop layer 16 and the joint member 20 provided at the portion of the first flame stop layer 16 in contact with the horizontal joint 22 are formed. According to this configuration, the joint member 20 prevents an opening (gap) in the horizontal joint 22 of the first dead end layer 16 at the time of heat shrinkage or collapse, and the heat insulating performance of the first dead end layer 16 is maintained. As a result, even if the thickness of the first dead end layer 16 is reduced, it is possible to ensure heat insulation during a fire, for example, it is possible to ensure fire resistance performance for at least one hour. Moreover, since the thickness of the whole flame stop layer can be reduced, the cross-sectional area of the entire member can be reduced in a fire-resistant member having a core material having the same cross-sectional area. Therefore, according to the second embodiment, it is possible to provide a fireproof laminated material that has a predetermined fireproof performance and is made slim.

  Furthermore, according to the second embodiment, since the area of the wood part by the core material occupying the cross-sectional area of the refractory laminated material can be increased, in the fire-resistant specification member having the same cross-sectional area, especially the core that is structurally important A lot of wood can be used for the material part. Moreover, the refractory laminated material of Embodiment 2 can be processed on-site, has good workability, and does not impair the wood texture. If this fireproof laminated material is used, the freedom degree of a wooden frame can be raised. Moreover, since an inorganic incombustible wood can be used as the 1st flame stop layer 16 provided in an outer side, a weather resistance is good. Therefore, according to the second embodiment, it is possible to reduce the thickness of the member and solve problems such as an increase in weight, a cross-sectional area of the structural material, and a reduction in the effective area of the chamber.

  In the second embodiment, as shown in FIG. 8, the fireproof laminated material 101 may be configured by further providing a finishing material 18 outside the first flame stop layer 16. Even if it does in this way, there can exist the same effect as said Embodiment 2. FIG.

  In addition, in said Embodiment 1 and 2, although the structure of the fireproof laminated material at the time of assuming an independent pillar was demonstrated, this invention is not limited to this. That is, you may use the fireproof laminated material which concerns on this invention in the form which touches other planar members which have fireproof performance, for example, a slab made from reinforced concrete, a fire wall, etc. In this case, that is, when used as a beam or a column with a wall, for example, as shown in FIGS. 9 and 10, the flame stop layer and the joint member 20 in a portion in contact with the flat member 28 which is a floor slab or a wall are omitted. You can also.

  As described above, according to the refractory laminated material according to the present invention, the core material made of the laminated material that supports the load and the first burner that is provided on the outside of the core material, has heat insulation properties, and is made of incombustible wood. A stop layer and a joint member that is provided at a portion in contact with the joint of the first stop layer and that is thickened by heating to exhibit heat insulation. Here, it can be said that a 1st flame stop layer is a coating layer which has fire resistance, and has a function which delays the progress of the combustion to an inner core material. In addition, the joint member has a function of filling a gap that may occur in the joint of the first flame stop layer due to heat shrinkage or collapse of the first flame stop layer made of noncombustible wood. The joint member closes the joint gap due to thermal contraction or collapse of the first dead end layer and maintains the heat insulation performance of the first dead end layer. As a result, the thickness of the first dead end layer is reduced. In addition, it is possible to ensure heat insulation in the event of a fire, for example, to ensure the performance of fire resistance for at least 1 hour. In addition, since the thickness of the flame stop layer can be reduced, the cross-sectional area of the entire member can be reduced in a fire-resistant specification member having a core material having the same cross-sectional area. Therefore, according to the present invention, it is possible to provide a fireproof laminated material having a predetermined fireproof performance and a slimmed member.

  Further, according to another fireproof laminated material according to the present invention, the second firestop layer further includes a second firestop layer provided on the outer side of the core material and made of an inorganic material having endothermic and heat insulation properties. The joint member is provided inside the first flame stop layer, and the joint member is provided in the second flame stop layer in contact with the joint of the first flame stop layer. Therefore, even when the joint member is provided in the second flame stop layer, the first member is provided. It is possible to fill the joint gap due to heat shrinkage or collapse of the flame-stopping layer.

  Moreover, according to the other fireproof laminated material which concerns on this invention, since it further comprises the finishing material provided in the outer side of a 1st flame stop layer, even when it is a case where a finishing material is provided in the outer side of the 1st flame stop layer The joint member can fill the joint gap due to thermal contraction or collapse of the first dead end layer.

  Further, according to another fireproof laminated material according to the present invention, the joint member is made of a sheet or liquid, and therefore when the joint member is provided in a portion in contact with the joint of the first flame stop layer, the first It can be easily applied by sticking or applying to the portion of the flame stop layer that contacts the joint.

  As described above, the refractory laminated material according to the present invention is useful for a refractory laminated material including a core material made of a laminated material for supporting a load and a dead end layer provided on the outer side of the core material, In particular, it is suitable for slimming the member.

DESCRIPTION OF SYMBOLS 10,100,101 Refractory laminated material 12 Core material 14 2nd flame stop layer 16 1st flame stop layer 18 Finishing material 18a, 16a Outer surface 20 Joint member 22 Horizontal joint (joint)
24 Clearance 28 Planar member (floor slab or wall)

Claims (4)

A core material made of laminated material that supports the load;
A first dead end layer provided on the outside of the core material, having heat insulation properties and made of non-combustible wood;
A fireproof laminated material, comprising: a joint member provided on a portion of the first dead end layer that is in contact with the joint, which is thickened by heating to exhibit heat insulation. A second flame stop layer provided on the outside of the core material and made of an inorganic material having endothermic and thermal insulation properties;
The second flame stop layer is provided inside the first flame stop layer,
2. The fireproof laminated material according to claim 1, wherein the joint member is provided in a second dead end layer that contacts the joint of the first dead end layer. 3.   The fireproof laminated material according to claim 1, further comprising a finishing material provided on the outside of the first dead end layer.   The fireproof laminated material according to any one of claims 1 to 3, wherein the joint member is made of a sheet or liquid.

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