Partition or partition wall structure

Abstract

To provide a parting wall structure capable of securing fireproof performance between a beam and a floorboard without using mortar.SOLUTION: A parting wall structure 1 includes: a beam 2; a floorboard 3 supported by an upper surface 2aa of the beam 2; a runner receiving metal fitting 4 supported by the upper surface 2aa of the beam 2 and in contact with a side surface 3a of the floorboard 3; a runner 5 supported by the runner receiving metal fitting 4 and extending along the beam 2; a wall base material 6 supported by the runner 5; and a fireproof covering material 7 covering the beam 2 from below. A first end 7aa of the fireproof covering material 7 is connected to a lower surface 3c of the floorboard 3. A second end 7bb of the fireproof covering material 7 is connected to the side surface 3a of the floorboard 3.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a partition or partition wall structure. [Background technology]

[0002] Known examples of conventional parting wall or partition wall structures include the support structure described in Patent Document 1. In the support structure of Patent Document 1, floor beams that support floor panels are covered with a fire-resistant covering material.

[0003] Also, a known conventional parting wall or partition wall structure is a parting wall structure 31 as shown in Figure 4. The parting wall structure 31 in Figure 4 comprises floor beams 33 that support floor panels 32 on upper surfaces 33aa of upper flanges 33a, a mortar receiving plate 34 with an L-shaped cross section that is supported on the upper surface 33aa of the upper flanges 33a on the side where the floor panels 32 are not supported, mortar 35 filled between the mortar receiving plate 34 and the floor panels 32, runners 38 that are supported by the mortar 35 and that support studs 37 to which gypsum boards 36 are attached, and a fire-resistant covering material 39 that covers the floor beams 33. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-133172 Summary of the Invention [Problem to be solved by the invention]

[0005] In the parting wall structure 31 of Figure 4, the end 39a of the fire-resistant covering material 39 is welded to the edge 33ar of the upper flange 33a of the floor beam 33, so any construction error in the end 39a of the fire-resistant covering material 39 is likely to affect the accuracy of the wall finish of the gypsum board 36 attached to the stud 37. The mortar backing plate 34 is likely to become wavy due to the filling pressure of the mortar 35, so the gypsum board 36 is pressed against the mortar backing plate 34, which is likely to deteriorate the accuracy of the wall finish of the gypsum board 36. In addition, when the mortar 35 is filled, some of the mortar 35 falls onto surrounding components, easily contaminating those components.

[0006] The present invention has been made in consideration of the above circumstances, and its object is to provide a structure in which fire resistance between beams and floor panels can be ensured in parting walls or partition walls without using mortar. [Means for solving the problem]

[0007] (1) The structure of a parting wall or partition wall according to the present invention comprises a beam, a floor panel supported on the upper surface of the beam, a runner support bracket supported on the upper surface of the beam and abutting the side surface of the floor panel, a runner supported by the runner support bracket and extending along the beam, a wall base material supported by the runner, and a fire-resistant covering material covering the beam from below. A first end of the fire-resistant covering material is connected to the lower surface of the floor panel. A second end of the fire-resistant covering material is connected to the side surface of the floor panel.

[0008] According to the present invention, the first end of the fire-resistant covering material covering the beam from below is connected to the underside of the floorboard, and the second end of the fire-resistant covering material is connected to the side of the floorboard. This ensures fire resistance between the beam and the floorboard without applying mortar to the upper surface of the beam. Therefore, by omitting mortar, the accuracy of the wall finish of the gypsum board attached to the wall base material supported by the runner is not affected by mortar. This improves the accuracy of the wall finish and prevents contamination of surrounding materials by mortar. Because the second end of the fire-resistant covering material is connected to the side of the floorboard, the end of the fire-resistant covering material on the second end side can be welded to the upper surface of the beam while the second end of the fire-resistant covering material is connected to the side of the floorboard. This reduces the impact of construction errors at the end of the fire-resistant covering material on the wall finish, compared to when the end of the fire-resistant covering material is welded to the edge of the upper surface of the beam. By eliminating the use of mortar, the time required for filling and hardening the mortar is eliminated, so the runner can be installed earlier than when the runner is supported by mortar, thereby shortening the installation time.

[0009] (2) The runner receiving metal fitting may be U-shaped and open in one direction. The second end of the fire-resistant covering material may extend into an internal space of the U-shaped runner receiving metal fitting.

[0010] The second end of the fire-resistant covering material penetrates into the U-shaped internal space of the runner support fitting, so that the portion of the runner support fitting that supports the runner can be exposed from the fire-resistant covering material while ensuring fire resistance between the beam and the floorboard.

[0011] (3) The fire-resistant covering material may be fixed to the U-shaped inner wall surface of the runner receiving metal fitting.

[0012] Construction errors at the fixing points of the fire-resistant covering material to the runner support fittings are less likely to affect the accuracy of the wall finish. [Effects of the Invention]

[0013] According to the present invention, in the structure of a parting wall or a partition wall, fire resistance between a beam and a floor panel can be ensured without using mortar. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a vertical cross-sectional view of a parting wall structure 1 according to an embodiment of the present invention, including a beam 2 and its surroundings. [Figure 2] FIG. 2 is a side view showing the beam 2, the first rigid frame column 8, the second rigid frame column 11, the runner receiving metal fittings 4, and the runner 5 of FIG. [Figure 3] FIG. 3 is a side view showing a state in which the beams 2 of the parting wall structure 1 according to the embodiment of the present invention are covered with a fire-resistant covering material 7. As shown in FIG. [Figure 4] FIG. 4 is a vertical cross-sectional view of the periphery of a conventional partition wall structure 31 including floor beams 33. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, the structure of a parting wall or a partition wall according to an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is merely an example of the present invention, and it goes without saying that the embodiment of the present invention can be appropriately modified without departing from the gist of the present invention.

[0016] A parting wall structure 1 according to an embodiment of the present invention is a parting wall structure separating a dwelling unit and a stairwell in a condominium, apartment, or the like. As shown in FIGS. 1 and 2 , the parting wall structure 1 includes a beam 2, floorboards 3, a runner support bracket 4, a first runner 5 (an example of a runner), a first stud 6 (an example of a wall underlayment), and a fire-resistant covering material 7. The beam 2 is formed of an H-shaped steel. The beam 2 has an upper flange 2a, a lower flange 2b located below the upper flange 2a, and a connecting portion 2c that vertically connects the upper flange 2a and the lower flange 2b. Hereinafter, in FIG. 1 , when viewed from the direction extending along the beam 2 (the direction perpendicular to the plane of the paper in FIG. 1 , hereinafter referred to as the "beam direction"), the leftward direction is defined as the leftward direction, and the rightward direction is defined as the rightward direction (an example of one direction). The leftward and rightward directions together are defined as the left-right direction.

[0017] The upper flange 2a is flat and extends in the beam direction and left-right directions. The upper surface 2aa of the upper flange 2a is rectangular and is longer in the beam direction than in the left-right direction. A first rigid frame pillar 8 extending in the vertical direction is fixed to the upper surface 2aa of the upper flange 2a. The first rigid frame pillar 8 has a column portion 8a extending in the vertical direction and a plate portion 8b fixed to the lower end of the column portion 8a. The column portion 8a is H-shaped when viewed in the vertical direction. The plate portion 8b is formed in a flat plate that extends in the beam direction and left-right directions. The plate portion 8b is fixed to the upper surface 2aa of the upper flange 2a by bolts 9 and nuts 10.

[0018] The lower flange 2b faces the upper flange 2a in the vertical direction. The lower flange 2b is flat and extends in the beam direction and the left-right direction. The lower surface 2bb of the lower flange 2b is rectangular and is longer in the beam direction than in the left-right direction. A second rigid frame column 11 extending in the vertical direction is fixed to the lower surface 2bb of the lower flange 2b. The second rigid frame column 11 has a column portion 11a extending in the vertical direction and a plate portion 11b fixed to the lower end of the column portion 11a. The column portion 11a is H-shaped when viewed in the vertical direction. The plate portion 11b is formed in a flat plate shape that extends in the beam direction and the left-right direction. The plate portion 11b is fixed to the lower surface 2bb of the lower flange 2b by bolts 9 and nuts 10.

[0019] The connecting portion 2c connects the left-right center of the upper flange 2a and the left-right center of the lower flange 2b. The connecting portion 2c is in the shape of a flat plate that extends in the beam direction and in the up-down direction.

[0020] A runner mounting member 12 is attached to the lower flange 2b. In this embodiment, two runner mounting members 12 are provided to sandwich the second rigid frame column 11 in the beam direction. Each runner mounting member 12 has a pair of locking pieces 12a and a support portion 12b. The pair of locking pieces 12a are formed so as to be engaged with both left and right end edges 2bl, 2br of the lower flange 2b by elastic force. The pair of locking pieces 12a have an L-shaped extension along both left and right end edges 2bl, 2br and the underside of the lower flange 2b, and are bent downward. The support portion 12b is fixed to the lower ends of the pair of locking pieces 12a. The support portion 12b is flat and extends in the beam direction and left-right directions. The underside of the support portion 12b is rectangular and is longer in the beam direction than in the left-right direction.

[0021] Two second runners 13, each having a downward U-shape when viewed from the beam direction, are fixed to the underside of the support portion 12b. The two second runners 13 are spaced apart in the left-right direction. The right second runner 13 protrudes slightly to the right from the right edge 2br of the bottom flange 2b of the beam 2. The left second runner 13 protrudes slightly to the left from the left edge 2bl of the bottom flange 2b of the beam 2. Each of the left and right second runners 13 supports a plurality of second studs (not shown) spaced apart in the beam direction. Each second stud extends in the up-down direction. The upper end of each second stud is fixed to the second runner 13 while inserted into the U-shaped internal space of the second runner 13. A heat insulating material 26 is arranged in the area defined by the second runners 13 and the second studs.

[0022] The floorboard 3 is made of lightweight aerated concrete. The floorboard 3 is supported on the upper surface 2aa of the upper flange 2a. The right side surface 3a (an example of a side surface) of the floorboard 3 is located approximately in the center of the upper surface 2aa of the upper flange 2a in the left-right direction. The right side surface 3a of the floorboard 3 overlaps the first rigid frame column 8 in the beam direction. A notch (not shown) is formed in the right side surface 3a of the floorboard 3 to avoid interference with the first rigid frame column 8. A moisture-proof sheet 14a and particle board 14b are installed in this order on the upper surface 3b of the floorboard 3 to form a floor finishing layer 14. A fixing bracket 15 is attached to the lower surface 3c of the floorboard 3. The fixing bracket 15 is located on the lower surface 3c of the floorboard 3, slightly spaced to the left of the left edge 2al of the upper flange 2a. The fixing bracket 15 extends along the beam direction. The fixing bracket 15 has a flat fixing piece 15a that is fixed to the lower surface 3c of the floorboard 3, and an extension piece 15b that extends downward from the right end edge of the fixing piece 15a.

[0023] The runner support bracket 4 is supported on the upper surface 2aa of the upper flange 2a of the beam 2. Multiple runner support brackets 4 are provided at intervals in the beam direction. In this embodiment, multiple runner support brackets 4 are provided at positions that sandwich the first rigid frame column 8 in the beam direction. The number of runner support brackets 4 is not particularly limited as long as it can support the first runner 5. Each runner support bracket 4 is formed in a U-shape that opens to the right (opposite the floorboard 3) when viewed from the beam direction. The runner support bracket 4 is formed by bending a single flat steel plate. Each runner support bracket 4 has a lower surface portion 4a, an upper surface portion 4b, a side surface portion 4c, and a reinforcing piece 4d.

[0024] The lower surface portion 4a is formed in a flat plate shape that extends in the beam direction and the left-right directions. The lower surface portion 4a is fixed to the upper surface 2aa of the upper flange 2a by bolts 16 and nuts 17. The upper surface portion 4b is located above the lower surface portion 4a. The upper surface portion 4b is formed in a flat plate shape that extends in the beam direction and the left-right directions. The upper surface portion 4b faces the lower surface portion 4a in the vertical direction. The height of the upper surface of the upper surface portion 4b is set to be the same height as the upper surface 3b of the floorboard 3. The side surface portion 4c connects the left end of the lower surface portion 4a and the left end of the upper surface portion 4b. The side surface portion 4c is formed in a flat plate shape that extends in the beam direction and the up-down directions. The left surface of the side surface portion 4c abuts against the right side surface 3a of the floorboard 3.

[0025] The reinforcing piece 4d is disposed in the U-shaped internal space 4e between the lower surface portion 4a and the upper surface portion 4b. The reinforcing piece 4d connects the lower surface of the upper surface portion 4b to the right surface 4cc of the side surface portion 4c. The right end of the reinforcing piece 4d is located at the right end of the lower surface of the upper surface portion 4b. The left end of the reinforcing piece 4d is located at the center in the up-down direction of the right surface 4cc of the side surface portion 4c. The reinforcing piece 4d is fixed to the upper surface portion 4b and the side surface portion 4c by welding. The reinforcing piece 4d may be omitted.

[0026] The first runners 5 are supported by the runner support fittings 4. The first runners 5 extend along the beam direction. The first runners 5 are each arranged at a position sandwiching the first rigid frame column 8 in the beam direction. The first runners 5 are formed in an upward U-shape when viewed from the beam direction. The first runners 5 have the same shape as the second runners 13. The first runners 5 protrude slightly to the right beyond the right end edge 2ar of the upper flange 2a of the beam 2. The first runners 5 are aligned vertically with the second runner 13 on the right.

[0027] The first studs 6 are supported by the first runners 5. Multiple first studs 6 are provided at intervals in the beam direction. Each first stud 6 extends in the vertical direction. The lower end of each first stud 6 is inserted into the U-shaped internal space of the first runners 5 and fixed to the first runners 5. A heat insulating material 18 is placed in the area partitioned by the first studs 6 and the first runners 5.

[0028] A third runner 19 is arranged to the left of the first runner 5 with a gap between them. The third runner 19 is formed in an upward U-shape when viewed from the beam direction. The third runner 19 has the same shape as the first runner 5. The third runner 19 is supported on the upper surface 3b of the floor panel 3. The third runner 19 is located at the right end of the upper surface 3b of the floor panel 3. Two third runners 19 are provided, sandwiching the first rigid frame column 8 in the beam direction. Each third runner 19 supports a plurality of third studs 20 with gaps between them in the beam direction. Each third stud 20 extends in the vertical direction. The lower end of each third stud 20 is inserted into the U-shaped internal space of the third runner 19 and fixed to the third runner 19. Heat insulating material 21 is arranged in the area partitioned by the third studs 20 and the third runner 19.

[0029] The fire-resistant covering material 7 is made of a fire-resistant material. For example, the fire-resistant covering material 7 can be made of rock wool. The fire-resistant covering material 7 is formed in a generally rectangular shape that is long in the beam direction, and as shown in Figures 1 and 3, covers the beam 2 from below. A left end 7aa (an example of a first end) of the fire-resistant covering material 7 is connected to the underside 3c of the floorboard 3. With the left end 7aa of the fire-resistant covering material 7 connected to the underside 3c of the floorboard 3, the end 7a of the fire-resistant covering material 7 on the left end 7aa side is welded and fixed to the left edge 2al of the upper flange 2a.

[0030] The fire-resistant covering material 7 extends downward from its left end 7aa to the left edge 2bl of the bottom flange 2b, covering the left side of the beam 2. The fire-resistant covering material 7 extends rightward from the left edge 2bl of the bottom flange 2b to the right edge 2br of the bottom flange 2b, covering the underside 2bb of the bottom flange 2b. A cutout is formed in the portion of the fire-resistant covering material 7 covering the underside 2bb of the bottom flange 2b to expose the runner mounting member 12. The support portion 12b of the runner mounting member 12 protrudes downward from the fire-resistant covering material 7 through this cutout. The fire-resistant covering material 7 extends upward from the right edge 2br of the bottom flange 2b to the right edge 2ar of the top flange 2a, covering the right side of the beam 2. The fire-resistant covering material 7 extends leftward from the right edge 2ar of the upper flange 2a, enters the U-shaped internal space 4e between the lower surface 4a and upper surface 4b of the runner receiving bracket 4, and reaches the right side surface 3a of the floor panel 3. A right end 7bb (an example of a second end) of the fire-resistant covering material 7 is connected to the right side surface 3a of the floor panel 3. As a result, the fire-resistant covering material 7 covers the upper surface 2aa of the upper flange 2a of the beam 2 and the upper surface 4aa (an example of an inner wall surface) of the lower surface 4a of the runner receiving bracket 4. With the right end 7bb of the fire-resistant covering material 7 connected to the right side surface 3a of the floor panel 3, an end 7b of the fire-resistant covering material 7 on the side of the right end 7bb is welded and fixed to the upper surface 2aa of the upper flange 2a and the lower surface 4a of the runner receiving bracket 4. With the right end 7bb of the fire-resistant covering material 7 connected to the right side surface 3a of the floorboard 3, the end portion 7b of the fire-resistant covering material 7 on the side of the right end 7bb may be welded and fixed to the upper surface 2aa of the upper flange 2a and the right surface 4cc (an example of an inner wall surface) of the side surface portion 4c of the runner receiving fitting 4. The first rigid frame column 8 and the second rigid frame column 11 are covered with a fire-resistant covering material (not shown).

[0031] A first gypsum board 22 is attached to the right side of the two first runners 5 and the multiple first studs 6. The first gypsum board 22 is attached to the right side of the two right-side second runners 13 and the multiple second studs in a lower portion of the first runner 5. A second gypsum board 23 is attached to the left side of the two left-side second runners 13 and the multiple second studs. A third gypsum board 24 is attached to the second gypsum board 23 and the extension piece 15b of the fastening bracket 15. A fourth gypsum board 25 is attached to the left side of the two third runners 19 and the multiple third studs 20. The fourth gypsum board 25 is located between the third runner 19 and the floor finishing layer 14. The numbers of the first gypsum boards 22, second gypsum boards 23, third gypsum boards 24, and fourth gypsum boards 25 are not particularly limited. In this embodiment, two of each of the first gypsum board 22, the second gypsum board 23, the third gypsum board 24, and the fourth gypsum board 25 are provided.

[0032] [Effects of the embodiment] In the parting wall structure 1, the left end 7aa of the fire-resistant covering material 7 covering the beam 2 from below is connected to the underside 3c of the floor panel 3, and the right end 7bb of the fire-resistant covering material 7 is connected to the right side 3a of the floor panel 3, so that the fire resistance performance between the beam 2 and the floor panel 3 can be ensured without applying mortar to the upper surface 2aa of the upper flange 2a of the beam 2.

[0033] In the parting wall structure 1, mortar for ensuring fire resistance between the beam 2 and the floorboard 3 is omitted, so the mortar does not affect the accuracy of the wall finish of the first gypsum board 22 attached to the first stud 6 supported by the first runner 5. This results in high wall finish accuracy and minimizes contamination of surrounding materials by mortar. Because the end 7b on the right end 7bb of the fire-resistant covering material 7 is welded to the upper surface 2aa of the upper flange 2a of the beam 2, construction errors in the end 7b on the right end 7bb of the fire-resistant covering material 7 are less likely to affect the accuracy of the wall finish than when the end 7b on the right end 7bb of the fire-resistant covering material 7 is welded to the right edge 2ar of the upper flange 2a of the beam 2. Because mortar is omitted, the time required for the mortar to fill and harden is eliminated. Therefore, the first runner 5 can be constructed earlier than when the first runner 5 is supported by mortar, thereby shortening construction time.

[0034] In the parting wall structure 1, the right end 7bb of the fire-resistant covering material 7 enters the U-shaped internal space 4e of the runner support bracket 4, so that the upper surface 4b of the runner support bracket 4 that supports the first runner 5 can be exposed from the fire-resistant covering material 7 while ensuring fire resistance between the beam 2 and the floorboard 3.

[0035] In the parting wall structure 1, the runner receiving bracket 4 is formed in a U-shape that opens to the right (opposite the floorboard 3) when viewed from the beam direction, so when connecting the right end 7bb of the fire-resistant covering material 7 to the right side surface 3a of the floorboard 3, the upper surface 4b of the runner receiving bracket 4 can be exposed from the fire-resistant covering material 7 without making a cut in the fire-resistant covering material 7. This makes it easy to cover the beam 2 with the fire-resistant covering material 7.

[0036] In the parting wall structure 1, the end 7b on the right end 7bb side of the fire-resistant covering material 7 is fixed to the upper surface 4aa of the lower surface 4a of the runner receiving bracket 4, so that construction errors in the end 7b on the right end 7bb side of the fire-resistant covering material 7 are unlikely to affect the accuracy of the wall finish.

[0037] In the parting wall structure 1, the runner receiving metal fitting 4 has a reinforcing piece 4d in the U-shaped internal space 4e, so that the holding force of the runner receiving metal fitting 4 to the first runner 5 is strong.

[0038] [Variations] In the parting wall structure 1 described above, the runner support fitting 4 is formed in a U-shape that opens to the right (opposite the floorboard 3) when viewed from the beam direction, but the shape of the runner support fitting 4 is not particularly limited as long as it can support the first runner 5. For example, the runner support fitting 4 may be formed in a rectangular parallelepiped shape. In this case, a cut is formed in the fire-resistant covering material 7 to expose the portion where the runner support fitting 4 supports the first runner 5.

[0039] In the above-described parting wall structure 1, the runner support fitting 4 is formed in a U-shape that opens to the right (away from the floorboards 3) when viewed from the beam direction. However, the orientation of the runner support fitting 4 is not particularly limited as long as the right end 7bb of the fire-resistant covering material 7 can enter the U-shaped internal space 4e between the lower surface 4a and upper surface 4b of the runner support fitting 4. For example, the runner support fitting 4 may be formed in a U-shape that opens toward the beam direction, or may be formed in a U-shape that opens to the left (toward the floorboards 3) when viewed from the beam direction. In either case, a notch is made in the fire-resistant covering material 7, and the right end 7bb of the fire-resistant covering material 7 enters the U-shaped internal space 4e between the lower surface 4a and upper surface 4b of the runner support fitting 4, covering the upper surface 4aa of the lower surface 4a with the fire-resistant covering material 7.

[0040] The parting wall structure 1 described above is a parting wall structure that separates a dwelling unit and an atrium in an apartment or condominium, but it may also be a parting wall structure that separates individual dwelling units. In this case, floorboards are also placed on the right side of the beam 2.

[0041] The above-described parting wall structure 1 has a parting wall of the lower floor below the beam 2, but the parting wall of the lower floor may be omitted.

[0042] In the above-described embodiment, the present invention is applied to the structure of a partition wall between a dwelling unit and an atrium, but the present invention may also be applied to the structure of a partition wall, such as a partition wall, for dividing the interior of a dwelling unit into several rooms. [Explanation of symbols]

[0043] 1. Parting wall structure 2...beam 2aa...Top surface 3. Floorboards 3a...side 3c...bottom surface 4···Runner support bracket 4aa...Top surface 4d...Reinforcement piece 4e...interior space 5. First runner 6. First stud 7...Fireproof covering material 7aa...1st end 7bb...2nd end

Claims

1. A parting wall or partition wall structure, Beams and a floor plate supported on the upper surface of the beam; a runner receiving bracket supported on the upper surface of the beam and in contact with the side surface of the floorboard; a runner supported by the runner receiving fitting and extending along the beam; a wall base material supported by the runner; and a fire-resistant covering material covering the beam from below, The runner receiving metal fitting has an internal space that opens in one direction, a first end of the fire-resistant covering material connected to the underside of the floor panel; A parting wall or partition wall structure in which the second end of the fire-resistant covering material enters the internal space of the runner support fitting from the one direction and is connected to the side surface of the floor panel.

2. 2. The structure of a parting wall or a partition wall according to claim 1, wherein the runner receiving metal fittings are U-shaped.

3. 3. A parting wall or partition wall structure according to claim 2, wherein the fire-resistant covering material is fixed to the U-shaped inner wall surface of the runner receiving metal fitting.

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