JP7270797B1 - ceiling structure - Google Patents

Abstract

[PROBLEMS] To provide a ceiling structure which has high rigidity, is well-fitted with equipment, and is excellent in design. A first surface member (5), a plurality of beam members (6) connected to a lower surface (5b) of the first surface member (5b), and a second surface member (7) connected to the lower surface of the plurality of beam members (6), A ceiling structure 2 in which a second panel 7 has a group of checkered openings. [Selection drawing] Fig. 1

Description

Application of Article 30, Paragraph 2 of the Patent Act 1. On May 27, 2021, Nippon Sekkei Co., Ltd. published the content of the invention pertaining to the application in Nikkei Architecture Special Edition 2021 May Future School 2021. 2. On June 17, 2021, Publication Detail No. In 229, Nihon Sekkei Co., Ltd. published the content of the claimed invention. 3. On July 15, 2021, Nippon Sekkei Co., Ltd. published the content of the claimed invention in publication KJ 2021.8. 4. On November 1, 2021, Nippon Sekkei Co., Ltd. published the content of the claimed invention in the publication Shinkenchiku: 2021 11. 5. Building Nagareyama City has released the content of the invention applied for as Nagareyama Municipal Oguro no Mori Elementary School was completed on March 31, 2021.

The present invention relates to ceiling structures.

Various ceiling structures for buildings are known (see Patent Document 1, for example).

JP 2019-90240 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a ceiling structure which is highly rigid, has a good fit of equipment, and is excellent in design.

The ceiling structure of the present invention includes a first panel, a plurality of beams connected to the lower surface of the first panel, and a second panel connected to the lower surface of the plurality of beams, It is a ceiling structure in which the second face member has a group of checkered openings.

The ceiling structure of the present invention is a ceiling structure having the above configuration, wherein the pitch of the group of openings in the first direction in which the plurality of beams are arranged is an integral multiple of two or more times the pitch of the beams. is preferred.

It is preferable that the ceiling structure of the present invention is a ceiling structure having a sound absorbing material on the lower surface of the first panel in the above configuration.

The ceiling structure of the present invention is preferably a ceiling structure having the third panel made of lightweight cellular concrete on the upper surface of the first panel in the above configuration.

The ceiling structure of the present invention is preferably a ceiling structure in which the third panel member constitutes the floor in the above configuration.

It is preferable that the ceiling structure of the present invention is a ceiling structure in which the first surface material is formed of a laminated veneer material in the above configuration.

Preferably, the ceiling structure of the present invention is a ceiling structure in which the first surface member, the plurality of beam members, and the second surface member are made of wood in the configuration described above.

According to the present invention, it is possible to provide a ceiling structure that is highly rigid, has a good fit of equipment, and is excellent in design.

1 is a vertical sectional view showing a ceiling support structure having a ceiling structure according to one embodiment of the invention; FIG. Figure 2 is a bottom view of the ceiling shown in Figure 1;

Embodiments of the present invention will be exemplified below with reference to the drawings.

As shown in FIGS. 1 and 2, in one embodiment of the present invention, the ceiling structure 2 includes a first panel 5, a plurality of beams 6, a second panel 7, a third panel 8, and a sound absorbing material 9. , a first receiving member 10 and a second receiving member 11 . A ceiling 3 is composed of a first panel 5, a plurality of beams 6 and a second panel 7, and the ceiling 3 is made of wood. That is, the first face member 5, the plurality of beam members 6 and the second face member 7 are made of wood. The ceiling structure 2 is connected to the seismic wall 4 . A ceiling support structure 1 is composed of a ceiling structure 2 and a seismic wall 4 .

The ceiling structure 2 of the present embodiment is suitable for medium- and large-scale buildings such as school buildings, and is also applicable to medium- and high-rise buildings such as office buildings, small-scale buildings such as residences, and other structures. is possible. According to this embodiment, the wooden ceiling 3 having excellent earthquake resistance can be easily realized.

The first panel 5 is provided substantially over the entire surface of the ceiling 3 . The first surface member 5 is generally horizontally arranged in a planar shape, but is not limited to this. may be configured. The first surface member 5 can be formed of, for example, a laminated veneer lumber (LVL), and with such a configuration, the rigidity of the ceiling 3 can be easily increased. Although the first face member 5 may be composed of a single integrally formed member, it is usually composed of a plurality of integrally formed members (also referred to as a first face member constituting member 5a). are arranged in a direction along the first surface member 5. Adjacent first surface member forming members 5a are connected to each other via a common beam 6 by connecting them to each other.

The plurality of beam members 6 are arranged side by side at intervals in the first direction D1 along the first surface member 5 . Each beam member 6 elongates along the first surface member 5 in a second direction D2 perpendicular to the first direction D1. Each beam member 6 can be formed of, for example, a laminated veneer lumber (LVL), and according to such a configuration, the rigidity of the ceiling 3 can be easily increased. Each beam member 6 has a vertically long shape with a vertical width larger than a horizontal width in a cross section perpendicular to the longitudinal direction (second direction D2). More specifically, the cross-sectional shape of each beam member 6 is a vertically long rectangular shape (right-angled quadrilateral shape) having two sides extending along the first direction D1 and two sides extending along the vertical direction. form. The cross-sectional shape of each beam member 6 is not limited to a rectangular shape. By making the cross-sectional shape of the beam member 6 vertically long, the rigidity of the ceiling 3 can be efficiently increased, and a sufficient space for housing equipment can be easily formed in the ceiling 3. . The width of the beam member 6 in the vertical direction is greater than the thickness of the first surface member 5 .

The upper surface of each beam member 6 is connected to the lower surface 5b of the first surface member 5 by fixing. Fixing is performed by a plurality of fasteners 12 (for example, screws). Each fastener 12 is fixed to the upper end of the beam member 6 by passing through the first surface member 5 from the upper surface 5c of the first surface member 5, for example.

The lower surface of each beam member 6 is connected to the upper surface 7a of the second surface member 7 by fixing. Fixing is performed by a plurality of fasteners 12 (for example, screws). Each fastener 12 is fixed to the lower end portion of the beam member 6 by penetrating the second surface member 7 from the lower surface 7b of the second surface member 7, for example.

The second face member 7 is arranged below the first face member 5 and faces the first face member 5 with a gap therebetween. The second panel 7 can be made of, for example, a laminated veneer (LVL), and with such a configuration, the rigidity of the ceiling 3 can be easily increased. It is preferable that the thickness of the second surface material 7 is smaller than the thickness of the first surface material 5 from the viewpoint of efficiently increasing the rigidity.

The second face member 7 has a group of checkered openings. More specifically, the second surface member 7 has an opening group including a plurality of rectangular openings 13 alternately arranged in a grid pattern in the first direction D1 and the second direction D2 when viewed from below. Each opening 13 has a rectangular shape with two sides extending along the first direction D1 and two sides extending along the second direction D2.

The second surface member 7 is configured by alternately arranging first row portions 14 extending in the first direction D1 and second row portions 15 extending in the first direction D1 in the second direction D2. The first row portion 14 is configured by alternately arranging the first row constituent members 14a and the first openings 13a in the first direction D1. The second row portion 15 is configured by alternately arranging the second row constituent members 15a and the second openings 13b in the first direction D1.

The second surface member 7 is configured by alternately arranging third row portions 16 extending in the second direction D2 and fourth row portions 17 extending in the second direction D2 in the first direction D1. . The third row portion 16 is configured by alternately arranging the first row constituent members 14a and the second openings 13b in the second direction D2. The fourth row portion 17 is configured by alternately arranging the second row constituent members 15a and the first openings 13a in the second direction D2.

Each of the first row constituent members 14a is preferably composed of a single integrally formed member, but a plurality of integrally formed members are used as the first row constituent member 14a (second surface member 7). ) may be arranged side by side. Each of the second row constituent members 15a is preferably composed of a single integrally formed member, but a plurality of integrally formed members are used as the second row constituent member 15a (second surface member 7). ) may be arranged side by side.

A plurality of beams 6 are arranged side by side at a predetermined pitch (hereinafter also referred to as beam pitch P1) in the first direction D1.

The checkered openings are arranged at a predetermined pitch (hereinafter also referred to as opening pitch P2) in the first direction D1. That is, in each first row portion 14, the first row constituent members 14a are arranged in the first direction D1 at the opening pitch P2, the first openings 13a are arranged at the same pitch as the first row constituent members 14a, and each second In the row portion 15, the second row members 15a are arranged in the first direction D1 at the same pitch as the first row members 14a, and the second openings 13b are arranged in the first direction D1 at the same pitch as the first row members 14a. .

The opening pitch P2 is preferably an integer multiple of two or more times the beam pitch P1, and may be four times the beam pitch P1 as in the example shown in FIG.

The area ratio of the first row constituent member 14a and the first opening 13a in the bottom view of the first row portion 14 can be appropriately set, and may be approximately 2:2 as in the example shown in FIG. For example, it may be approximately 3:1 or approximately 1:3.

In each first row portion 14, each first row constituent member 14a extends from the lower surface of one beam member 6 to the lower surface of another beam member 6 in the first direction D1, as in the example shown in FIG. From the viewpoint of increasing the rigidity, it is preferable to arrange so as to extend to . Also, in each second row portion 15, each second row constituent member 15a extends from the bottom surface of one beam member 6 to the bottom surface of another beam member 6, as in the example shown in FIG. Arranging so as to extend in the direction D1 is preferable from the viewpoint of increasing rigidity.

The width of the first row portion 14 and the second row portion 15 in the second direction D2 can be appropriately set in consideration of the design and facility storability. The width in the two directions D2 may be set larger than the width of the second row portion 15 in the second direction D2, or may be set equal to the width of the second row portion 15 in the second direction D2, for example.

As described above, according to the ceiling structure 2 having the first surface member 5, the plurality of beam members 6, and the checkered second surface member 7, it is possible to achieve excellent rigidity due to the three-dimensional structure. Equipment such as an air conditioner and lighting can be arranged in a well-fitting manner inside the opening group, and as a result, excellent design can be realized.

The first receiving member 10 is made of wood and has a beam shape elongated in the second direction D2. The upper surface 10a of the first receiving member 10 is connected to the lower surface 5b of the first surface member 5 by fixing. Fixing is performed by a plurality of fasteners 12 (for example, screws). Each fastener 12 is fixed to the upper end portion of the first receiving member 10 by passing through the first surface member 5 from the upper surface 5c of the first surface member 5, for example.

The second receiving member 11 is made of wood and has a beam shape elongated in the second direction D2. The lower surface 11a of the second receiving member 11 is connected to the upper surface 7a of the second surface member 7 by fixing. Fixing is performed by a plurality of fasteners 12 (for example, screws). Each fastener 12 is fixed to the lower end portion of the second receiving member 11 by passing through the second surface member 7 from the lower surface 7b of the second surface member 7, for example.

The quake-resistant wall 4 is composed of walls of an quake-resistant building 18 made of reinforced concrete. The earthquake-resistant wall 4 has a first anchor row composed of a plurality of first anchor bolts 19 arranged side by side in the second direction D2 and each projecting in the first direction D1 from the side surface of the earthquake-resistant wall 4, and a row below the first anchor row. a second anchor row composed of a plurality of second anchor bolts 20 arranged side by side in the second direction D2 and each protruding from the side surface of the seismic wall 4 in the first direction D1.

The first receiving member 10 is passed through the first anchor row and is fixedly connected to the seismic wall 4 via the first anchor row by a nut 21 . Further, the lower surface 10b of the first receiving member 10 is placed on and supported by a stepped portion 4a projecting from the seismic wall 4 in the first direction D1. The second receiving member 11 is passed through the second anchor row and is connected to the earthquake-resistant wall 4 through the second anchor row by a nut 21 by fixing.

According to the configuration in which the first panel 5 and the second panel 7 are respectively connected to the earthquake-resistant wall 4 as described above, the ceiling 3 can be firmly connected to the earthquake-resistant wall 4, resulting in excellent earthquake resistance. can be easily realized. The method of fixing the first face member 5 and the second face member 7 to the seismic wall 4 is not limited to the method using the first support member 10 and the second support member 11 .

The ceiling structure 2 has a sound absorbing material 9 on the lower surface 5b of the first surface member 5, as shown in FIG. 1, for example. It is preferable to arrange the sound absorbing material 9 in a checkered pattern so as to correspond to the opening group (that is, overlap the opening group) when viewed from below. By providing the sound absorbing material 9 in this way, the sound insulation can be efficiently improved. Note that a configuration in which the sound absorbing material 9 is not provided may be employed.

The ceiling structure 2 has a third panel 8 made of autoclaved lightweight concrete (ALC) on the upper surface 5 c of the first panel 5 . With such a configuration, the rigidity and sound insulation of the ceiling 3 can be efficiently improved. Moreover, according to such a third panel 8, the floor 22 of the upper floor can be easily formed by the ceiling 3, as in the example shown in FIG. For example, as in the example shown in FIG. 1, a floating floor type floor material 22a may be provided above the third member.

As described above, according to the present embodiment, it is possible to realize the ceiling structure 2 that is highly rigid, has a good fit of equipment, and is excellent in design.

The present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the scope of the invention.

Therefore, the ceiling structure 2 of the above-described embodiment includes the first panel 5, the plurality of beams 6 connected to the lower surface 5b of the first panel 5, and the second surface connected to the lower surfaces of the plurality of beams 6. , and the second panel 7 has a group of checkered openings.

For example, the structure is not limited to the configuration in which the ceiling structure 2 is connected to the seismic wall 4 arranged in the first direction D1 with respect to the ceiling structure 2 as in the above-described embodiment. The ceiling structure 2 may be connected to the seismic wall 4 that is arranged. The ceiling structure 2 is not limited to the configuration that constitutes the floor 22 of the upper floor. The ceiling structure 2 is not limited to the configuration having the third panel 8 . The ceiling 3 composed of the first panel 5, the plurality of beams 6, and the second panel 7 is not limited to a wooden structure.

In the ceiling structure 2 of the above-described embodiment, the pitch P2 of the opening group in the first direction D1 in which the plurality of beams 6 are arranged is an integral multiple of two or more times the pitch P1 of the beams 6. is preferably the ceiling structure 2 .

The ceiling structure 2 of the embodiment described above is preferably the ceiling structure 2 having the sound absorbing material 9 on the lower surface 5b of the first surface member 5 in the above configuration.

The ceiling structure 2 of the embodiment described above is preferably the ceiling structure 2 having the third panel 8 made of lightweight cellular concrete on the upper surface 5c of the first panel 5 in the above configuration.

The ceiling structure 2 of the embodiment described above is preferably the ceiling structure 2 in which the third panel 8 constitutes the floor 22 in the above configuration.

The ceiling structure 2 of the embodiment described above is preferably the ceiling structure 2 in which the first surface member 5 is formed of a laminated veneer material in the above configuration.

The ceiling structure 2 of the embodiment described above is preferably the ceiling structure 2 in which the first surface member 5, the plurality of beam members 6, and the second surface member 7 are made of wood in the above configuration.

1 Ceiling support structure 2 Ceiling structure 3 Ceiling 4 Seismic wall 4a Stepped portion 5 First panel 5a First panel component 5b Lower surface 5c Upper panel 6 Beam member 7 Second panel 7a Upper panel 7b Lower panel 8 Third panel 9 Sound absorption Material 10 First receiving member 10a Upper surface 10b Lower surface 11 Second receiving member 11a Lower surface 12 Fastener 13 Opening 13a First opening 13b Second opening 14 First row portion 14a First row member 15 Second row portion 15a Second row Constituent member 16 3rd row portion 17 4th row portion 18 Earthquake-resistant building 19 First anchor bolt 20 Second anchor bolt 21 Nut 22 Floor 22a Floor material D1 First direction D2 Second direction P1 Beam material pitch P2 Opening pitch

Claims (6)

a first face material;
a plurality of beam members connected to the lower surface of the first surface member;
a second surface member connected to the lower surface of the plurality of beam members,
The second face member has a checkered opening group,
The ceiling structure, wherein the pitch of the opening group in the first direction in which the plurality of beams are arranged is an integral multiple of twice or more the pitch of the beams. The ceiling structure according to claim 1 , having a sound absorbing material on the lower surface of said first panel. 3. Ceiling structure according to claim 1 or 2 , comprising a third panel made of lightweight cellular concrete on top of the first panel. 4. The ceiling structure according to claim 3 , wherein said third panel constitutes a floor. The ceiling structure according to any one of claims 1 to 4 , wherein the first face member is formed of laminated veneer lumber. The ceiling structure according to any one of claims 1 to 5, wherein the first panel, the plurality of beams and the second panel are made of wood.

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