JP2018076755A - Structure of convex corner of partition walls and construction method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a convex corner of a partition wall capable of ensuring a predetermined fire resistance performance even when an aluminum protection member is attached to the convex corner and facilitating the work.SOLUTION: A partition wall convex corner 1 includes: a steel stud 10 having a generally rectangular shape in a planar view, which is disposed on the convex corner 1 of a partition wall extending in a vertical direction; gypsum boards 20, 21 which are disposed on two neighboring sides 10C and 10D of the stud 10, and in an abutting portion therebetween, a cut-off is formed; a convex corner member 60 of 1.5 mm or more in thickness for covering the cut-off part 23 of the gypsum boards 20 and 21; an aluminum protection member 40 attached to the convex corner member 60 thereover.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a structure of a protruding corner portion of a partition wall in which a gypsum board is attached to a lightweight steel base and a construction method thereof.

Conventionally, in the Building Standard Law, in order to prevent a flame from spreading suddenly at the time of a fire, a fire prevention section is defined that partitions a building into a certain area. This fireproof section needs to have a fireproof structure composed of pillars, walls, floors and the like having fireproof performance from 30 minutes to 3 hours.
As a one-hour fireproof wall, it is recognized that a lightweight steel partition wall in which a 12.5 mm thick gypsum board is doubled on each side of a lightweight steel base is used (for example, FP060NP-0174 certified by the Ministry of Land, Infrastructure, Transport and Tourism). ).

In such a fire wall, the gap between the gypsum boards is required to be filled with a reinforcing material or a sealing material and subjected to joint treatment to integrate the wall materials.
At the protruding corner, it will fit like plaster boards or bends of the wall material, so the same treatment as joint treatment is performed to prevent partial thickness reduction or gaps. ing.

  Further, in order to prevent smoke from penetrating in the event of a fire, it is necessary to perform gap filling, that is, four-round processing, at the peripheral edge (upper, lower, left and right sides) of the gypsum board. For example, as a four-round treatment, a rock wool felt or a silicon seal material is filled in a gap between a fire wall and a column or floor.

  By the way, in order to prevent cracks from occurring due to an object colliding with the projecting corner portion, the corner portion is often used to protect more than the flat portion of the fireproof wall.

  FIG. 1 of Patent Document 1 shows a fire wall in which a gypsum board is doubled on one side. At the projecting corner of this fireproof wall, the plasterboard and gypsum board are notched by cutting out the outer plasterboard in the vicinity of the apex of the projecting corner so that the outer surface of the gypsum board can be smoothly connected via a protective material. A part of the gypsum board having the same thickness is attached to the inside (lightweight steel frame side) in a wider area than the defective part to prevent a partial reduction in the thickness of the gypsum board.

JP 2016-37759 A

  However, in the structure as described in Patent Document 1 described above, since the gypsum board at the protruding corner is retracted and arranged, it is necessary to process the lightweight steel base and the gypsum board at the protruding corner, which takes time and effort. There was a problem.

  An object of the present invention is to provide a structure of a protruding corner portion of a partition wall that can secure predetermined fire resistance and can be easily constructed even when an aluminum protective member is attached to the protruding corner portion, and a method for constructing the same. .

  The structure of the protruding corner portion of the partition wall according to claim 1 (for example, the protruding corner portions 1, 1A, 1B, 1C, and 1D of the partition wall described later) is disposed at the protruding corner portion of the partition wall and is in the vertical direction. The steel vertical member (for example, a stud 10 and a square steel pipe 12 to be described later) having a substantially rectangular shape in plan view and a deficient portion (for example, to be described later) provided on two adjacent side surfaces of the vertical member. Gypsum board (for example, gypsum boards 20 and 21 described later) provided with a deficient portion 23), and a steel plate having a thickness of 1.5 mm or more (for example, a protruding corner member 60 described later) for closing the deficient portion of the gypsum board. And a protective member made of aluminum or steel (for example, a protective member 40 described later) attached on the steel plate.

According to the Ministry of Construction Notification No. 1376, when a fire prevention facility is provided in a portion close to a portion penetrating the fire prevention section, the air passage between the fire prevention facility and the fire prevention section has a thickness of 1.5 mm. It is stipulated that it should be made of the above iron plate, or coated with iron mortar or other noncombustible material.
Therefore, according to the present invention, the Ministry of Construction Notification No. 1376 is applied mutatis mutandis, and the defective portion of the gypsum board is closed with a steel plate having a thickness of 1.5 mm or more. As a result, even if an aluminum or steel protective member is attached to the protruding corner, it is no longer necessary to place an extra gypsum board inside the protruding corner as in the prior art, ensuring the prescribed fire resistance. In addition, the projecting corner of the partition wall can be easily constructed.

  The structure of the protruding corner portion of the partition wall according to claim 2 is such that the steel plate (for example, a protruding corner member 60 described later) has two side surfaces adjacent to the vertical member (for example, side surfaces 10C, 10D, 12C described later). 12D) and a pair of contact pieces (for example, a contact piece 62 to be described later) provided on the fixed piece and abutted with the end face of the gypsum board. It is characterized by providing.

  According to the present invention, the gypsum board can be easily closed with the fixed piece having a thickness of 1.5 mm or more by setting the gypsum board in contact with the contact piece. Therefore, it is possible to easily construct the protruding corner portion of the partition wall while ensuring a predetermined fire resistance.

  The structure of the protruding corner portion of the partition wall according to claim 3, wherein the vertical member is formed of a steel plate having a thickness of 1.5 mm or more. Part structure.

  According to the present invention, since the vertical member is formed of a steel plate having a thickness of 1.5 mm or more, it is not necessary to attach the steel plate as a separate member on the vertical member, and the construction of the protruding corner portion of the partition wall is easier. Become.

  The method for constructing the protruding corner portion of the partition wall according to claim 4 includes a step of attaching a steel vertical member extending in the vertical direction and having a substantially rectangular shape in plan view to the protruding corner portion of the partition wall (for example, described later) Step S2), a step of attaching a steel plate having a thickness of 1.5 mm or more across two adjacent side surfaces of the vertical member (for example, step S3 described later), A step of attaching a steel protection member (for example, step S4 described later) and a step of attaching a gypsum board to each of two adjacent side surfaces of the vertical member so as to overlap a part of the steel plate (for example, described later) Step S5).

  According to the present invention, there is an effect similar to the effect of claim 1 described above.

  According to the present invention, even if a protective member made of aluminum is attached to the protruding corner portion, it is possible to ensure predetermined fire resistance and to easily perform construction.

It is a horizontal sectional view of the protruding corner portion of the partition wall according to the first embodiment of the present invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is sectional drawing which shows the state which removed the protection member from the protruding corner part of the partition wall which concerns on the said embodiment. It is a flowchart of the procedure which builds the protruding corner part of the partition wall which concerns on the said embodiment. It is a horizontal sectional view of the protruding corner of the partition wall according to a modification of the embodiment. It is a horizontal sectional view of the protruding corner portion of the partition wall according to the second embodiment of the present invention. It is a horizontal sectional view of the protruding corner of the partition wall according to a modification of the embodiment. It is a horizontal sectional view of the protruding corner portion of the partition wall according to the third embodiment of the present invention. It is a flowchart of the procedure which builds the protruding corner part of the partition wall which concerns on the said embodiment. It is a horizontal sectional view of the protruding corner of the partition wall according to a modification of the embodiment. It is a horizontal sectional view of the protruding corner part of the partition wall concerning a 4th embodiment of the present invention. It is a flowchart of the procedure which builds the protruding corner part of the partition wall which concerns on the said embodiment. It is a horizontal sectional view of the protruding corner of the partition wall according to a modification of the embodiment. It is a horizontal sectional view of the protruding corner portion of the partition wall according to the fifth embodiment of the present invention. It is a horizontal sectional view of the protruding corner of the partition wall according to a modification of the embodiment. It is a side view of the protrusion corner part of the partition wall which concerns on the modification of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.
[First Embodiment]
FIG. 1 is a side view of a protruding corner portion 1 of a partition wall according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 3 is a cross-sectional view taken along line BB in FIG. 4 is a cross-sectional view taken along the line CC of FIG. FIG. 5 is a cross-sectional view showing a state in which the protective member 40 is removed from the protruding corner portion 1 of the partition wall.

  The protruding corner portion 1 of the partition wall is substantially L-shaped in plan view. The projecting corner portion 1 of the partition wall includes a runner (not shown) attached to the floor surface and the ceiling surface and studs 10 and 11 as a plurality of steel vertical members provided between the upper and lower runners and extending in the vertical direction. And gypsum boards 20 and 21 each having a deficient portion 23 provided on the abutting portion thereof, and a board edge presser for closing the deficient portion 23 of the gypsum boards 20 and 21. A member 30, an aluminum protection member 40 mounted on the board edge pressing member 30, and a sealing material 50 placed in a gap between the board edge holding member 30 and the protection member 40 are provided.

The stud 10 is provided at a corner of the protruding corner 1 and has a square shape of 65 mm × 65 mm in plan view. 1, the upper side surface in FIG. 1 is 10A, the left side surface in FIG. 1 is 10B, the lower side surface in FIG. 1 is 10C, and the right side surface in FIG. 1 is 10D.
The stud 11 has a width of 65 mm and is provided in contact with the side surface 10A and the side surface 10B of the stud 10.

The gypsum boards 20 and 21 are composed of an underlay gypsum board 20 having a thickness of 12.5 mm provided on the side surfaces of the studs 10 and 11 and an overlaid gypsum board 21 provided on the underlay plaster board 20. .
These gypsum boards 20 and 21 are fixed to the side surface of the stud 11 and the two adjacent side surfaces 10C and 10D of the stud 10 with a tacker (not shown).
A cloth 22 is stretched on the surface of the gypsum board 21, and a baseboard 24 is attached to the lower end of the surface of the gypsum board 21 (see FIG. 1).

The board edge holding member 30 includes a protruding corner member 60 provided across the side surfaces 10 </ b> C and 10 </ b> D of the stud 10, and a reinforcing member 70 that reinforces the protruding corner member 60.
The protruding corner member 60 is made of steel having a thickness of 1.6 mm, and has a fixed piece 61 having a substantially L-shaped cross section fixed to the side surfaces 10C and 10D of the stud 10, and a gypsum board provided on the fixed piece 61 And a pair of abutting pieces 62 with which the end faces of 20 and 21 abut.

  The fixed piece 61 is integrally formed by bending a steel plate having a thickness of 1.6 mm into a substantially L shape. The contact piece 62 is a steel plate having a thickness of 1.6 mm, and is fixed by welding at an intermediate position of the fixed piece 61.

  A screw 33 is screwed into the outer side (opposite the corner) of the fixed piece 61 of the projecting corner member 60 from the top, whereby the projecting corner member 60 is connected to the side surface of the stud 10. It is fixed to 10C and 10D. Further, the end portions of the gypsum boards 20 and 21 are placed on the fixing piece 61 of the protruding corner member 60.

Returning to FIG. 1, the upper end of the protection member 40 extends to the ceiling space. The ceiling parting 52 of the ceiling material 51 is in contact with the side surface on the upper end side of the protection member 40. Further, a closing plate 63 that is a 1.6 mm steel plate is attached to the upper end surface of the protruding corner member 60, and the upper end of the protection member 40 is in contact with the closing plate 63.
Moreover, the lower end part of the protection member 40 is extended to the floor surface. A closing plate 63, which is a 1.6 mm steel plate, is attached to the lower end surface of the projecting corner member 60 and on the floor surface, and the lower end of the protection member 40 is in contact with the closing plate 63.

  The reinforcing member 70 includes a fixing piece 71 extending along the fixing piece 61 of the protruding corner member 60 and an extending piece 72 extending from the fixing piece 71 along the contact piece 62 of the protruding corner member 60.

  The protective member 40 is made of aluminum, and is disposed on the fixed piece 61 of the projecting corner member 60 and fixed to the side surfaces 10C and 10D of the stud 10, and outward from the pair of fixed pieces 41. A pair of extending pieces 42 extending in the direction and a protection piece 43 having a curved shape connecting the pair of extending pieces 42 to each other are provided.

  In the fixed piece 61 of the protruding corner member 60, the fixed piece 41 of the protective member 40 is disposed on the corner side of the abutting piece 62, and in this state, the screw 44 is screwed from above to protect the protective member 40. Are fixed to the side surfaces 10 </ b> C and 10 </ b> D of the stud 10 together with the board edge holding member 30.

Hereinafter, the procedure for constructing the protruding corner portion 1 of the partition wall will be described with reference to the flowchart of FIG.
In step S1, runners (not shown) are attached to the floor surface and the ceiling surface.
In step S2, the studs 10 and 11 are attached between the upper and lower runners.

In step S <b> 3, the board edge holding member 30 is attached to the corner stud 10 with the screw 33.
In step S <b> 4, the protection member 40 is attached to the corner stud 10 with the screw 44. Thereby, a gap is formed between the contact piece 62 of the board edge pressing member 30 and the extended pieces 42 of the protection member 40.

  In step S <b> 5, the gypsum boards 20 and 21 are attached to both side surfaces of the studs 10 and 11. At this time, a part of the gypsum boards 20 and 21 is mounted on the fixed piece 61 of the board edge pressing member 30.

  In step S6, the cloth 22 is put on the gypsum board 21 to finish. At this time, the cloth 22 is stuck to the inside of the contact piece 62 of the board edge pressing member 30.

  In step S <b> 7, the sealing material 50 is placed in the gap between the board edge pressing member 30 and the protection member 40. In this way, the protection member 40 is attached between the gypsum boards 20 and 21.

  In this embodiment, the board small edge holding member 30 and the protection member 40 are fixed to the corner stud 10 using the screws 33 and 44. However, the present invention is not limited to this, and as shown in FIG. The pressing member 30 and the protection member 40 may be fixed by welding to the corner stud 10.

According to this embodiment, there are the following effects.
(1) The missing part 23 of the plasterboards 20 and 21 was closed with a board edge pressing member 30 made of a steel plate having a thickness of 1.5 mm or more. Thereby, even if the protective member 40 made of aluminum is attached to the protruding corner portion, it is not necessary to place one extra gypsum board inside the protruding corner portion as in the prior art, while ensuring a predetermined fire resistance performance, The projecting corner 1 of the partition wall can be easily constructed.

  (2) By setting the gypsum boards 20 and 21 in contact with the abutment pieces 62 of the board edge holding member 30, the deficient portions 23 of the gypsum boards 20 and 21 can be easily fixed with the fixing pieces 61 having a thickness of 1.5 mm. Can be closed. Therefore, it is possible to easily construct the protruding corner portion 1 of the partition wall while ensuring a predetermined fire resistance.

[Second Embodiment]
FIG. 8 is a horizontal sectional view of the protruding corner portion 1A of the partition wall according to the second embodiment of the present invention.
This embodiment is different from the first embodiment in that the protruding corner member 60 of the board edge pressing member 30 is formed by bending a single steel plate instead of forming a part thereof by welding.

That is, the protruding corner member 60 is formed by bending a single steel plate having a thickness of 1.6 mm. Specifically, the protruding corner member 60 is substantially W-shaped, and is provided on the pair of fixed pieces 61 fixed to the side surfaces 10 </ b> C and 10 </ b> D of the stud 10 and connected to each other, and the pair of fixed pieces 61. And a pair of abutting pieces 62 with which the end faces of the gypsum boards 20 and 21 abut.
In the present embodiment, unlike the first embodiment, the board edge holding member 30 and the protection member 40 are fixed to the corner stud 10 using only the screws 44.

  In this embodiment, the board edge holding member 30 and the protection member 40 are fixed to the corner stud 10 using the screws 44. However, the present invention is not limited thereto, and as shown in FIG. The pressing member 30 and the protection member 40 may be fixed to the corner stud 10.

  According to the present embodiment, there are the same effects as the above (1) and (2).

[Third Embodiment]
FIG. 10 is a horizontal sectional view of the protruding corner portion 1B of the partition wall according to the third embodiment of the present invention.
In this embodiment, the point from which the square steel pipe 12 is used instead of the stud 10 differs from 2nd Embodiment. 10A, the upper side surface in FIG. 10 is 12B, the left side surface in FIG. 10 is 12B, the lower side surface in FIG. 10 is 12C, and the right side surface in FIG. 10 is 12D.

In the present embodiment, the following points are different from the first embodiment.
That is, the board edge holding member 30 is composed of only a pair of substantially L-shaped protruding corner members 60, and is not provided with a reinforcing member. Further, a screw 33 is screwed into the fixing piece 61 of the board edge holding member 30 from above, whereby the board edge holding member 30 is fixed to the side surfaces 12C and 12D of the square steel pipe 12.
Further, screws 44 are screwed into the fixing piece 41 of the protection member 40 from above, whereby the protection member 40 is fixed to the side surfaces 12C and 12D of the square steel pipe 12.

In the procedure for constructing the protruding corner portion 1B of the partition wall of the present embodiment, steps S3B and S4B are different from those of the first embodiment, as shown in FIG.
That is, in step S <b> 3 </ b> A, the protection member 40 is attached to the corner stud 10 with the screw 44.
In step S4A, the board edge holding member 30 is attached to the corner stud 10 with the screw 33.

  In this embodiment, the board edge holding member 30 is fixed to the square steel pipe 12 using the screws 33. However, the present invention is not limited to this, and the board edge holding member 30 is attached to the square steel pipe 12 by welding as shown in FIG. It may be fixed.

  According to the present embodiment, there are the same effects as the above (1) and (2).

[Fourth Embodiment]
FIG. 13 is a horizontal sectional view of the protruding corner portion 1C of the partition wall according to the fourth embodiment of the present invention.
In this embodiment, the point which integrated the protection member 40 with the board edge pressing member 30 differs from 1st Embodiment.
That is, the protection member 40 is made of steel, and connects the pair of contact pieces 62 of the board edge pressing member 30. Unlike the first embodiment, the reinforcing member 70 and the screw 44 are not provided.

In the procedure for constructing the protruding corner portion 1C of the partition wall in this embodiment, step S3C and the subsequent steps are different from those in the first embodiment, as shown in FIG.
That is, in step S3C, the protection member 40 and the board edge pressing member 30 are attached to the corner stud 10 with the screw 33.
In step S4C, the gypsum boards 20 and 21 are attached to both side surfaces of the studs 10 and 11, respectively.
In step S5C, the cloth 22 is stretched over the gypsum board 21 and the protective member 40 to finish.

  According to the present embodiment, there are the same effects as the above (1) and (2).

  In this embodiment, the board edge holding member 30 has the same configuration as that of the first embodiment. However, the present invention is not limited to this, and the board edge holding member 30 is the same as that of the third embodiment as shown in FIG. It is good also as a structure.

  According to the present embodiment, there are the same effects as the above (1) and (2).

[Fifth Embodiment]
FIG. 16 is a horizontal sectional view of the protruding corner portion 1D of the partition wall according to the fifth embodiment of the present invention.
The present embodiment is different from the first embodiment in the following points.
That is, the underlaying gypsum board 20 is extended and is in contact with each other.
Further, the reinforcing member 70 is not provided, and the fixing piece 61 of the board edge pressing member 30 is fixed to the corner stud 10 through the underlay plaster board 20 with the screw 33. Further, the lower plaster board 20 does not contact the contact piece 62 of the board edge pressing member 30, and only the upper plaster board 21 contacts.

Moreover, the protection piece 43 of the protection member 40 is not a curved shape but a substantially L-shape.
In addition, a sealing material is not placed in the gap between the board edge pressing member 30 and the protection member 40, and the upper plaster board 21 is pasted.

  In this embodiment, the protruding corner member 60 of the board edge pressing member 30 is partially formed by welding. However, the present invention is not limited to this, and as shown in FIG. It may be formed by bending.

  According to the present embodiment, there are the same effects as the above (1) and (2).

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described first to third embodiments, the sealing material 50 is placed in the gap between the board edge pressing member 30 and the protection member 40. The gap may be filled with putty.

In this case, instead of steps S6 and S7 in the first and second embodiments and steps S4C and S5C in the third embodiment, the following steps S6D (S4D) and S7D (S5D) are performed.
In step S6D (S4D), the gap between the board edge pressing member 30 and the protection member 40 is filled with putty.
In step S7D (S5D), the cloth 22 is stretched over the gypsum board 21, the putty, and the protective member 40 to finish.

Moreover, in the above-mentioned 4th Embodiment, although the clearance gap between the board edge holding | suppressing member 30 and the protection member 40 was filled with the upholstery gypsum board 21, it is not restricted to this, The clearance gap between the board edge | edge opening pressing member 30 and the protection member 40 May be filled with sealing material or putty.
Moreover, in each above-mentioned embodiment, although the upper end part of the protection member 40 was extended to ceiling back space, and the lower end part of the protection member 40 was extended to the floor surface, as shown in FIG. The upper end of 40 may extend to the bottom of the ceiling, and the lower end of protection member 40 may extend to the top of the baseboard 24.
Moreover, in each above-mentioned embodiment, although the surface of the gypsum board 21 was made into the cloth finish, it is good not only in this but a paint finish.

DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C, 1D ... Projection corner part of partition wall 10 ... Stud of corner part (vertical member)
10A, 10B, 10C, 10D ... Stud side face 11 ... Stud 12 ... Square steel pipe (vertical member) 12A, 12B, 12C, 12D ... Side face of square steel pipe 20 ... Underlay gypsum board 21 ... Overlay gypsum board 22 ... Cross 23 ... Defects 24 ... Baseboard 30 ... Board edge pressing member 33 ... Screw 40 ... Protection member 41 ... Fixed piece 42 ... Extension piece 43 ... Protection piece 44 ... Screw 50 ... Sealing material 51 ... Ceiling material 52 ... Ceiling closing 60 ... Out Corner member 61 ... fixed piece 62 ... contact piece 63 ... blocking plate 70 ... reinforcing member 71 ... fixed piece 72 ... extending piece

Claims (4)

A substantially rectangular steel vertical member arranged in a projected corner of the partition wall and extending in the vertical direction in a plan view;
A gypsum board provided on two adjacent side surfaces of the vertical member and provided with a deficient portion in the abutting portion;
A steel plate having a thickness of 1.5 mm or more that closes the defective part of the plaster board;
An aluminum or steel protective member mounted on the steel plate, and a structure of a protruding corner portion of the partition wall. The steel plate is a fixed piece fixed to two adjacent side surfaces of the vertical member;
The structure of the protruding corner portion of the partition wall according to claim 1, further comprising: a pair of abutting pieces provided on the fixed piece and abutting against an end face of the gypsum board.   The structure of the protruding corner portion of the partition wall according to claim 1, wherein the vertical member is formed of a steel plate having a thickness of 1.5 mm or more. Attaching a vertical member extending in the vertical direction and having a substantially rectangular shape in plan view to the protruding corner of the partition wall;
A process of attaching a steel sheet having a thickness of 1.5 mm or more across two adjacent side surfaces of the vertical member;
Attaching a protective member made of aluminum or steel on the steel plate;
A method of constructing a protruding corner portion of a partition wall, comprising: a step of overlapping a part of the vertical member on the steel plate and attaching a gypsum board to each of two adjacent side surfaces of the vertical member.

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