JP5231204B2 - Fireproof outer wall structure - Google Patents

Description

  The present invention relates to a fireproof outer wall structure, and more particularly to a fireproof outer wall structure including a steel sheet base material and a fireproof tile that is provided on the outer wall of a building and prevents a flame from entering the room.

  In recent years, in buildings such as residential buildings, in order to effectively prevent the intrusion of flame from the outside to the inside of the building, it has been desired to provide fire resistance performance to the outer wall of the building. For example, as fire resistance performance of quasi-fire resistance of 45 minutes, there is no jet of flame that continues for more than 10 seconds to the non-heated side, no flame that continues for more than 10 seconds on the non-heated side, cracks through which the flame passes, etc. Various fire-resistant outer wall structures having desired quasi-fire resistance performance based on a vertical heating test based on IS0834 similar to the Minister's certification test have been developed.

  In these conventional fireproof outer wall structures, for example, tiles with incombustible performance are used as surface materials, and siding materials and mortar are used as the base material, and a dry construction method in which tiles are hooked on siding materials, and tiles are bonded to mortar. The mainstream is the one formed by attaching the tile to the outer wall part by wet adhesion method, etc., but in the conventional fireproof outer wall structure, the fire resistance performance of the outer wall is secured by the fire resistance performance of the base material by siding material or mortar. Therefore, it takes a lot of labor and cost to impart desired fire resistance to these base materials.

  In addition, a tile is a member having a very long service life, whereas a siding material or an adhesive has a short service life of, for example, about 30 years as compared with the service life of a tile. When using siding or mortar as a base material in a building that is used for a long period of time, such as a house, it is necessary to repair the base material or replace the tiles. Will occur.

On the other hand, using a tile-arranged substrate made of extruded products of metal such as aluminum as a base material, the tile is fixed to the outer wall surface of the building in a stable state over the long term, and the tile can be easily attached and detached at the time of renovation or dismantling What was made possible is disclosed (for example, refer patent document 1).
JP 2006-214219 A

  However, since the tile-arranged substrate of Cited Document 1 is a metal product, it is considered that it can exhibit excellent fire resistance performance with a fixed tile, but it is costly because it is an extrusion-molded product. , The thickness becomes considerable, and handling becomes inconvenient. Further, the tile-arranged substrate of the cited document 1 is not intended to improve the fire resistance performance of the outer wall, and therefore, a special device is required to use it as a base material for the fire resistant outer wall structure.

  The present invention provides a fire-resistant outer wall structure that can combine a steel sheet base material and a fire-resistant tile without causing a mismatch in terms of long support, and that can exhibit excellent fire-resistant performance easily and inexpensively. Purpose.

  The present invention is a fireproof outer wall structure composed of a steel plate base material and a fireproof tile, which is provided on the outer wall of a building and prevents a flame from entering the indoor side. The fire-resistant tiles are arranged in vertical and horizontal directions, and the steel plate base material is alternately covered with a covering plate arranged so as to cover the base surface of the outer wall and parallel to the surface side of the covering plate. The first rail plate includes a plurality of first rail plates and a plurality of second rail plates, and the first rail plate has an upper end of an oblique hooking piece for locking an intermediate locking recess on the back surface of the fireproof tile from diagonally above. The lower rail is provided with a lower contact step portion that is in close contact with the lower end portion of the rear surface of the refractory tile, and the second rail plate is in close contact with the upper end portion of the rear surface of the refractory tile. The fireproof tile has an upper contact stepped portion, and the intermediate back side in the vertical direction of the flat back surface includes the intermediate locking recess whose upper surface is notched obliquely upward. Each of the intermediate locking recesses is fixed to the diagonal hook piece, the lower end of the back surface is attached to the lower contact step portion, and the upper end portion of the back surface is attached to the upper contact step portion. Thus, the above object is achieved by providing a fireproof outer wall structure that maintains a state of being separated from the covering plate via the lower contact stepped portion and the upper contact stepped portion.

  In the fire resistant outer wall structure of the present invention, the covering plate is provided with a protruding groove extending in the vertical direction and protruding toward the back surface side, and the back surface of the protruding groove is brought into close contact with the outer wall base surface. By attaching the covering plate, it is preferable that a space is maintained between the covering plate and the outer wall base surface at a portion other than the projection groove.

  In the fireproof outer wall structure of the present invention, a lower end mounting projection is provided at a lower end on the back side of the fireproof tile, and a lower end portion of the lower contact step portion is provided at a lower end portion of the first rail plate. Is folded in a U-shape to provide a tile receiving recess, and the lower end mounting protrusion is positioned and mounted on the tile receiving recess in a state where the intermediate locking recess is locked to the oblique hooking piece. It is preferable that it is such.

  Further, in the fireproof outer wall structure of the present invention, it is preferable that a leaf spring clip is attached so as to be interposed between the lower surface of the tile receiving recess and the upper end surface of the lower fireproof tile.

  Furthermore, in the fireproof outer wall structure of the present invention, the fireproof tile includes a through hole penetrating in the lateral direction, and the through holes of the fireproof tiles arranged in a row in the lateral direction communicate in a straight line. It is preferable that it is such.

  According to the fireproof outer wall structure of the present invention, a steel plate base material and a fireproof tile can be combined to exhibit excellent fireproof performance easily and inexpensively without causing mismatch in terms of long support.

  As shown in FIGS. 1 and 2, a fireproof outer wall structure 10 according to a preferred embodiment of the present invention is provided as a building, for example, at a part on the outdoor side of an outer wall 30 in a wooden residential building, and is provided from the outside of the building to the inside. In order to effectively form an outer wall 30 having a quasi-fire resistance of 45 minutes, for example, by combining the steel plate base material 11 and the refractory tiles 12, which can effectively prevent the intrusion of a flame into the fire. It was adopted.

  That is, the fireproof outer wall structure 10 of this embodiment is a part on the outdoor side of the outer wall 30 that is provided on the outer wall 30 of the building and prevents the flame from entering the indoor side, and is composed of the steel plate base material 11 and the fireproof tile 12. This structure is configured by a large number of refractory tiles 12 being vertically and horizontally attached to the surface of the steel plate base material 11, and the steel plate base material 11 is disposed so as to cover the outer wall base surface 13. The cover plate 14 includes a plurality of first rail plates 15 and a plurality of second rail plates 16 that extend in parallel to the surface side of the cover plate 14 and are alternately attached. The first rail plate 15 is a fireproof tile. 12 is provided with a diagonal hooking piece 18 for locking the intermediate locking recess 17 on the rear surface of the rear surface 12 from the upper side, and a lower contact stage for closely contacting the lower end portion 19a of the rear surface of the refractory tile 12. The section 20 includes a lower end portion, the second rail plate 16 is provided with an upper contact step portion 21 is brought into close contact with the rear surface of the upper portion 19b of the refractory tile 12. The refractory tile 12 includes the intermediate locking recesses 17 in which the upper surface 17a is cut obliquely upward at the middle portion of the flat back surface in the vertical direction. Each of the refractory tiles 12 has intermediate locking recesses 17. Is engaged with the oblique hooking piece 18 of the first rail plate 15, the lower end portion 19 a of the back surface is brought into close contact with the lower contact step portion 20, and the upper end portion 19 b of the back surface is attached to the upper contact step portion 21 of the second rail plate 16. By being attached in close contact with each other, a state of being separated from the covering plate 14 through the lower contact stepped portion 20 and the upper contact stepped portion 21 is maintained.

  In the present embodiment, the covering plate 14 is provided with a protruding groove 22 (see FIG. 3) that extends in the vertical direction and protrudes toward the back surface side. By being attached in close contact with each other, the space s1 is maintained between the covering plate 14 and the outer wall base surface 13 at portions other than the projection grooves 22 (see FIG. 1).

  Further, in the present embodiment, a lower end mounting projection 23 is provided at the lower end of the rear surface side of the fireproof tile 12, and the lower end portion of the lower adhesion stepped portion 20 is connected to the lower end portion of the first rail plate 15. The tile receiving recess 24 is provided by being bent into a U-shape, and the lower end mounting projection 23 is fitted to the tile receiving recess 24 in a state where the intermediate locking recess 17 is locked to the oblique hooking piece 18 of the first rail plate 15. Is positioned and mounted.

  In the present embodiment, the outer wall 30 of the building preferably constitutes a load-bearing wall, and is supported by a frame member (not shown) such as a column or a beam, and the outdoor side and the indoor side of these frame members. A load bearing surface 25 is attached to the surface (see FIG. 1), and a moisture permeable waterproof sheet 26 is laid on the surface of the load bearing surface 25 on the outdoor side. The surface of the moisture permeable waterproof sheet 26 is used as the outer wall base surface 13 to attach the fireproof outer wall structure 10 of the present embodiment.

  In the present embodiment, an interior finishing material or the like is appropriately attached to the load bearing surface material (not shown) attached to the indoor side surface of the frame member, and the outdoor side load bearing surface material 25 and the indoor strength strength. A heat insulating material or the like is appropriately disposed in the hollow portion between the face material. Further, in the present embodiment, as the load-bearing face material 25 on the outdoor side, a plurality of front side belts arranged in parallel at intervals are provided, preferably having the same configuration as the panel member described in Japanese Patent Application Laid-Open No. 2000-160732. A cross panel formed by joining and integrating a narrow plate and a plurality of back-side strip-shaped narrow plates arranged in parallel at intervals is used.

  As shown in FIGS. 3 and 4, the steel plate base material 11 constituting the fireproof outer wall structure 10 of this embodiment is preferably made of a gallium steel plate, and includes a covering plate 14, a first rail plate 15, and a second rail. And plate 16.

  The covering plate 14 is made of a gallium steel plate having a thickness of 0.4 mm, for example, and a plurality of unit plates formed in a horizontally-long rectangular shape having a width of about 1820 mm and a height of about 420 mm, for example, For example, the outer wall base surface 13 is attached so as to cover the entire peripheral wall by arranging the peripheral portions in a vertical and horizontal manner while overlapping and joining with a width of about 5 mm. In addition, it is preferable that a unit plate overlaps and joins the peripheral part in the part in which outer wall frame members, such as a pillar and a stud, were provided, for example.

  Further, the covering plate 14 is formed by forming a protrusion groove 22 extending in the vertical direction and projecting to the back surface side by bending or pressing the gallium steel plate, for example, having a depth of about 4 mm and a width of about 13 mm. It protrudes so as to have an isosceles trapezoidal cross-sectional shape, and is provided in the lateral direction with a pitch of, for example, about 227.5 mm. By attaching the covering plate 14 with the back surface of the protruding groove 22 being in close contact with the outer wall base surface 13 of the moisture permeable waterproof sheet 26, a space s1 that allows air to flow between the covering plate 14 and the outer wall base surface 13 is maintained. (See FIG. 1).

  Then, on the surface of the covering plate 14, a plurality of first rail plates 15 and a plurality of second rail plates 16 are extended in parallel in the lateral direction by a joining method such as spot welding or press caulking. In this case, the upper and lower directions are alternately joined and integrated.

  The first rail plate 15 is formed by, for example, bending or pressing a gallium steel plate having a thickness of 0.6 mm. The first rail plate 15 is provided with an oblique hooking piece 18 by bending an upper portion of the intermediate flat plate portion 27 tightly bonded to the surface of the covering plate 14 obliquely forward at an angle of 45 °, for example, Moreover, the lower contact | abutting level | step-difference level part 20 which closely_contact | adheres the lower end part 19a of the back surface of the refractory tile 12 is pushed along the surface parallel to the intermediate flat plate part 27 by pushing the lower part of the intermediate flat plate part 27 forward through a slope part. Arranged and provided.

  In the present embodiment, a tile receiving recess 24 is formed at the lower end of the first rail plate 15 by bending the lower end portion of the lower adhesion stepped portion 20 into a U-shape. The lower end mounting projection 23 of the refractory tile 12 to be hooked on the steel plate base material 11 is mounted.

  Furthermore, in this embodiment, the part ahead of the front-end | tip of the tile receiving recessed part 24 is return | folded further outward toward the downward direction, and the folding | returning superposition | polymerization part 28 is formed. Further, the lower end of the folded overlap portion 28 protrudes downward from the lower surface of the tile receiving recess 24 to form a drop-off preventing piece 29.

  Since the folded overlap portion 28 is formed outside the tile receiving recess 24, the tile receiving recess 24 can be effectively reinforced. Further, the lower end of the folded overlap portion 28 protrudes downward from the lower surface of the tile receiving recess 24 and the drop prevention piece 29 is formed, so that the lower surface of the tile receiving recess 24 and the upper end surface of the lower refractory tile 12 are formed. It is possible to effectively avoid the leaf spring clip 31 to be described later, which is attached between them, from dropping from the attachment position.

  Furthermore, in the present embodiment, the diagonal hooking piece 18 of the first rail plate 15 is provided with a drain notch 32 at a position corresponding to the protruding groove 22 of the covering plate 14. Since the drainage notch 32 is provided at a position corresponding to the protruding groove 22 of the oblique hooking piece 18, water existing between the steel plate base material 11 and the refractory tile 12 is passed through the protruding groove 22. Can be drained smoothly.

  The second rail plate 16 is formed by, for example, bending or pressing a gallium steel plate having a thickness of 0.4 mm. The upper part which sticks the upper end part 19b of the back surface of the fireproof tile 12 to the 2nd rail plate 16 by pushing the upper part of the lower flat plate part 33 tightly joined to the surface of the coating | coated plate 14 ahead through a slope part. The close contact step portion 21 is provided along a plane parallel to the lower flat plate portion 33.

  In the present embodiment, the second rail plate 16 abuts the upper end edge of the upper contact stepped portion 21 with the lower surface corner portion of the tile receiving recess 24 of the first rail plate 15 on the covering plate 14 side from below. Thus, the first rail plate 15 and the first rail plate 15 are alternately attached in the vertical direction.

  Further, in the present embodiment, the portion of the upper contact step 21 of the second rail plate 16 and the portion of the tile receiving recess 24 of the first rail plate 15 are provided on the oblique hooking piece 18 of the first rail plate 15. The intermediate water drain notch portions 34 and 35 are formed in each intermediate portion of the plurality of water drain notch portions 32 formed. By passing through these intermediate water drain notches 34 and 35, it becomes possible to drain the water existing between the steel plate base material 11 and the refractory tile 12 more smoothly.

  The fireproof tile 12 constituting the fireproof outer wall structure 10 of the present embodiment is a tile member made of ceramics, for example, and has a horizontally long planar shape as shown in FIG. 3, and has a thickness of about 30 mm, for example. ing. The refractory tile 12 is formed so that the front surface and the back surface are flat surfaces, and an intermediate member in which an upper surface 17a is cut obliquely upward at an angle of 45 °, for example, at an intermediate portion in the vertical direction of the back surface. A stop recess 17 is formed.

  Further, a substantially half portion on the back surface side of the upper end portion of the refractory tile 12 protrudes upward as a back surface side upper end protrusion portion 36, and a substantially half portion on the front surface side of the lower end portion is downward as a surface side lower end protrusion portion 37. Protruding. Furthermore, a lower end mounting protrusion having a lower protrusion height than the front surface side lower end protrusion 37 with a locking groove 38 interposed between the lower end of the rear surface side of the fireproof tile 12 and the front surface side lower end protrusion 37. 23 is provided. As described above, the lower end mounting protrusion 23 is mounted on the tile receiving recess 24 of the first rail plate 15 when the fireproof tile 12 is hooked on the steel plate base material 11.

  In the present embodiment, the refractory tile 12 penetrates between the side end surfaces on both sides in the lateral direction, and the through holes 39 are formed. When the refractory tiles 12 are continuously arranged in the lateral direction, The through holes 39 of the plurality of refractory tiles 12 communicate with each other in a straight line in the lateral direction. The through holes 39 of the refractory tiles 12 that are continuously arranged in the lateral direction communicate in a straight line in the lateral direction, so that an air flow passage is secured in the middle portion of the refractory tile 12 and the fire resistance effect by the refractory outer wall structure 10. Can be further improved.

  The fireproof outer wall structure 10 according to the present embodiment includes, for example, a first rail plate 15 and a second rail plate 15 after the steel plate base material 11 is attached to the outdoor load bearing surface material 25 so as to cover the outer wall base surface 13 using a fixing screw or the like. A portion of the outer wall 30 on the outdoor side without using an adhesive or the like by simply attaching a large number of refractory tiles 12 to the surface of the steel plate base material 11 to which the rail plate 16 is integrally joined. Can be easily provided.

  That is, each refractory tile 12 has its intermediate locking recess 17 locked to the oblique hooking piece 18 of the first rail plate 15, the lower end portion 19 a on the back surface is in close contact with the lower contact step portion 20, and the upper end portion on the back surface The fireproof outer wall structure 10 according to the present embodiment can be easily operated without much trouble by hooking 19b in close contact with the upper contact stepped portion 21 of the second rail plate 16. It will be easily formed. Here, since the upper surface 17 a of the intermediate locking recess 17 of each fireproof tile 12 is locked along the upper surface of the diagonal hooking piece 18 of the first rail plate 15, the lower end of the back surface depends on the weight of the fireproof tile 12. The force in the direction of pressing the portion 19a and the upper end portion 19b against the lower contact stepped portion 20 and the upper contact stepped portion 21 is loaded, whereby the lower end portion 19a and the upper end portion 19b of each refractory tile 12 are It becomes possible to make it adhere | attach to the part 20 and the top contact | adherence level | step difference part 21 in the stable state.

  Further, in the present embodiment, as shown in FIGS. 3 and 1, between the lower surface of the tile receiving recess 24 of the first rail plate 15 and the upper end surface of the rear surface side upper end protrusion 36 of the lower refractory tile 12. An intervening leaf spring clip 31 is attached. Since the leaf spring clip 31 is interposed between the lower surface of the tile receiving recess 24 and the upper end surface of the lower refractory tile 12, an intermediate engagement between the refractory tiles 12 by the elastic biasing force of the leaf spring clip 31. Loads include the force to press the stop recess 17 against the oblique hooking piece 18 of the first rail plate 15 and the force to press the lower end 19a and upper end 19b of the back surface of the refractory tile 12 against the lower contact step 20 and the upper contact step 21. Thus, each refractory tile 12 can be attached to the steel plate base material 11 in a more stable state.

  And according to the fireproof outer wall structure 10 of this embodiment which has the above-mentioned structure, it combines the steel plate base material 11 and the fireproof tile 12, and does not produce a mismatch in terms of a long support, and it is easy to have excellent fireproof performance. And can be obtained at low cost.

  That is, in this embodiment, since the steel plate base material 11 is used as a base material for attaching a large number of refractory tiles 12 to the outer wall 30, excellent fire resistance performance by the steel plate base material 11 and long durability that can be used for a long time. Depending on the number of years, it is possible to provide long support even in buildings that are used over a long period of time, such as a third-generation house, by matching effectively with the fireproof tile 12 that has the same excellent fireproof performance and long service life. It can be easily provided in such a state.

  Further, according to the fireproof outer wall structure 10 of the present embodiment, the steel plate base material 11 is formed using a thin steel plate having a thickness of, for example, about 0.15 to 3.5 mm, preferably about 0.4 to 0.6 mm. Therefore, processing and the like are easy and can be formed at low cost, and many fireproof tiles 12 have the intermediate locking recesses 17 locked to the diagonal hooking pieces 18 of the first rail plate 15 and the lower end of the back surface. The lower contact step portion 20 and the upper contact step portion are attached in a state where the portion 19a is attached to the lower contact step portion 20 and the upper end portion 19b of the back surface is attached to the upper contact step portion 21 of the second rail plate 16. Since the state separated from the covering plate 14 through 21 is maintained, air flows between the fireproof tile 12 and the covering plate 14 to further improve the fireproof performance. Possible to become.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the steel plate base material can be formed using various other steel plates other than the gallium steel plate. Moreover, the fireproof tile does not necessarily need to be provided with a through hole penetrating in the horizontal direction.

It is principal part sectional drawing explaining the structure of the fireproof outer wall structure which concerns on preferable one Embodiment of this invention. It is a partial notch schematic front view explaining the structure of the fireproof outer wall structure which concerns on preferable one Embodiment of this invention. It is a principal part disassembled perspective view explaining the structure of the fireproof outer wall structure which concerns on preferable one Embodiment of this invention. It is a principal part perspective view explaining the structure of the fireproof outer wall structure which concerns on preferable one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fireproof outer wall structure 11 Steel plate base material 12 Fireproof tile 13 Outer wall base surface 14 Cover plate 15 1st rail plate 16 2nd rail plate 17 Intermediate | middle latching recessed part 18 Diagonal hook piece 19a Lower end part 19b of the back surface of a fireproof tile Upper end portion 20 on the back side Lower contact step portion 21 Upper contact step portion 22 Projection groove 23 Lower end mounting projection portion 24 Tile receiving recess portion 30 Outer wall 31 Leaf spring clip 39 Through hole

Claims (5)

A fireproof outer wall structure composed of a steel sheet base material and fireproof tiles, which is provided on the outer wall of a building and prevents a flame from entering the indoor side,
A large number of the fireproof tiles are arranged vertically and horizontally on the surface of the steel sheet base material, and are configured.
The steel sheet base material includes a covering plate arranged to cover an outer wall base surface, and a plurality of first rail plates and a plurality of second rail plates that extend in parallel to the surface side of the covering plate and are alternately attached. Consists of
The first rail plate is provided with a diagonal hooking piece for locking an intermediate locking recess on the back surface of the refractory tile from an oblique upper side at an upper end portion, and a lower contact step portion for closely contacting a lower end portion of the back surface of the refractory tile. The second rail plate is provided with an upper contact stepped portion that closely contacts the upper end portion of the back surface of the refractory tile,
The refractory tile includes the intermediate locking recess whose upper surface is cut obliquely upward in the vertical middle portion of the flat back surface,
A number of the fireproof tiles each have the intermediate locking recess locked to the diagonal hook piece, the lower end portion of the back surface is in close contact with the lower contact step portion, and the upper end portion of the back surface is the upper contact step portion. A fireproof outer wall structure that maintains a state of being separated from the covering plate through the lower contact stepped portion and the upper contact stepped portion by being attached in close contact with each other.   The covering plate is provided with a protruding groove that extends in the vertical direction and protrudes to the back surface side, and the covering plate is attached by bringing the back surface of the protruding groove into close contact with the outer wall base surface. The fireproof outer wall structure according to claim 1, wherein an interval is maintained between the covering plate and the outer wall base surface at a portion other than the protruding groove.   A lower end mounting projection is provided at the lower end of the rear side of the fireproof tile, and the lower end of the first rail plate is bent at the lower end portion of the lower contact step portion into a U-shape. 3. The fireproof outer wall according to claim 1, wherein a recess is provided, and the lower end mounting protrusion is positioned and mounted on the tile receiving recess in a state where the intermediate locking recess is locked to the oblique hooking piece. Construction.   The fireproof outer wall structure according to claim 3, wherein a leaf spring clip is attached between the lower surface of the tile receiving recess and the upper end surface of the lower fireproof tile.   The said refractory tile is provided with the through-hole penetrated in a horizontal direction, and the through-hole of the said some refractory tile arranged continuously by the horizontal direction communicates linearly. The fireproof outer wall structure according to any one of the above.

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