JP2007002544A - Unit building and building unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve sound insulation in a structure in which a floor structure of a building unit on the upper floor and a ceiling structure of a building unit on the lower floor are combined.
SOLUTION: The ceiling structure 32b of the building unit 32 also serves as the floor structure of the loft 61 of the roof unit 50 connected to the upper side of the floor, and is provided below the floor foundation plate 32f of the loft 61 and the floor foundation plate 32f. The floor base plate 32k for forming the ceiling surface of the building unit 32, the floor joist 32j for supporting the floor base plate 32f, and the ceiling joist 32d for supporting the ceiling base plate 32k are provided. The ceiling joists 32d are arranged in a non-contact manner on the floor base plate 32f to improve sound insulation.
[Selection] Figure 2

Description

  The present invention relates to a unit building and a building unit used in the unit building, and particularly relates to improvement of sound insulation between building units that are vertically connected.

  Conventionally, as one of the construction methods for building a building such as a detached house, a building unit standardized with a predetermined size is manufactured in a factory in advance, and a plurality of manufactured building units are carried into a building construction site. A construction method for assembling them into one building by connecting them together is known. And the building constructed by such a construction method is called a unit building.

  In recent years, a loft (back room) has been formed even in such a unit building. However, in a unit building, a loft is formed in order to reduce the number of times of loft construction at a construction site. It has been proposed to incorporate side walls, ceiling materials, and the like into a roof unit, which is one of building units, at a factory in advance (Patent Documents 1 and 2).

  Here, since it is common that the roof unit is not provided with a floor structure, forming a floor structure on the roof unit for the loft causes a significant cost increase and a newly provided floor. Depending on the thickness of the structure, the space height of the loft may be reduced.

  Therefore, the inventors of the present application have proposed a technique for forming the floor structure of the loft so that the ceiling structure of the building unit connected directly below the loft also serves (Patent Document 3).

According to the unit building adopting such a structure, the floor structure of the loft is formed as part of the ceiling structure of the building unit connected directly below the loft, so the loft side (the ceiling of the building unit immediately below) It is not necessary to form a loft floor structure separately in the space above the structure). Therefore, the loft space height is higher than the newly installed loft floor structure separately from the ceiling structure of the downstairs building unit. In addition to ensuring a high height, the manufacturing cost can be reduced as compared with the case where a floor structure of a loft is newly provided.
JP-A-4-254636 JP-A-6-307102 JP 2005-127060 A

  By the way, the structure that doubles the ceiling structure of the building unit itself assembled directly under the loft as the floor structure of the loft reduces the distance between the loft floor surface and the ceiling surface of the building unit below the floor. It is conceivable that the sound insulation between the two is inferior to the sound insulation between the normal building units connected vertically.

  If the floor structure of the building unit on the upper floor is combined with the ceiling structure of the building unit on the lower floor, the above-described problem of sound insulation is that the loft formed in the roof unit and Not only in relation to the building unit, but also in the relationship between the building unit on the upper floor and the building unit on the lower floor that are connected vertically, the building unit on the upper floor is also open to the outside world, such as a balcony unit. This can occur in the same way when a unit disposed at a different site is applied.

  The present invention has been made in view of the above circumstances, and the ceiling structure of the building unit on the lower floor among the two building units connected vertically is the structure that also serves as the floor structure of the building unit on the upper floor, or It is an object of the present invention to provide a unit building and a building unit that can improve sound insulation in a structure in which the floor structure of the building unit also serves as a ceiling structure of the building unit on the lower level.

  In the unit building according to claim 1 of the present invention, the building unit on the upper floor and the building unit on the lower floor disposed immediately below the building unit on the upper floor are connected vertically, and the building unit on the lower floor is In a unit building in which a ceiling structure also serves as a floor structure of the building unit on the upper floor, the floor structure and the ceiling structure include a floor foundation plate that forms a floor surface of the building unit on the upper floor, and the floor foundation plate A ceiling base plate that forms a ceiling surface of the downstairs building unit, a floor joist that supports the floor base plate, and a ceiling joist that supports the ceiling base plate. The floor joists are arranged in non-contact with the ceiling base plate, and the ceiling joists are arranged in non-contact with the floor base plate.

  According to the unit building according to claim 1 of the present invention configured as described above, the floor joist supported by being in contact with the floor base plate from below is in direct contact with the ceiling base plate on the downstairs side formed below the floor joist. Therefore, the upper floor sound generated in the floor base plate is transmitted to the floor joist but is not directly transmitted from the floor joist to the lower floor ceiling base plate.

  In addition, the ceiling joist that supports and supports the ceiling base plate from above is not in direct contact with the floor base plate on the upper floor formed above the ceiling joist. However, it is not transmitted directly from the ceiling joist to the floor base plate on the upper floor.

  Therefore, the sound insulation between the upper floor and the lower floor can be improved as compared with the conventional art.

  In the unit building according to claim 2 of the present invention, the building unit on the upper floor and the building unit on the lower floor arranged immediately below the building unit on the upper floor are connected vertically, and the building unit on the lower floor is In a unit building in which a ceiling structure also serves as a floor structure of the building unit on the upper floor, the floor structure and the ceiling structure include a floor foundation plate that forms a floor surface of the lower floor building unit, and the floor foundation plate A ceiling base plate that forms a ceiling surface of the downstairs building unit, a floor joist that supports the floor base plate, and a ceiling joist that supports the ceiling base plate. The floor joists are disposed in non-contact with the ceiling base plate, and the ceiling joists are disposed in non-contact with the floor base plate.

  According to the unit building according to claim 2 of the present invention configured as described above, the floor joist supported in contact with the floor base plate from below is in direct contact with the ceiling base plate on the downstairs side formed below the floor joist. Therefore, the upper floor sound generated in the floor base plate is transmitted to the floor joist but is not directly transmitted from the floor joist to the lower floor ceiling base plate.

  In addition, the ceiling joist that supports and supports the ceiling base plate from above is not in direct contact with the floor base plate on the upper floor formed above the ceiling joist. However, it is not transmitted directly from the ceiling joist to the floor base plate on the upper floor.

  Therefore, the sound insulation between the upper floor and the lower floor can be improved as compared with the conventional art.

  The unit building according to claim 3 of the present invention is the unit building according to claim 1 or 2, wherein the floor joists and the ceiling joists are disposed in the gap, and the height of the floor joists and the height of the ceiling joists are set. Both are smaller than the height of the gap, and the upper surface of the floor joist is joined to the lower surface of the floor base plate to support the floor base plate, and the lower surface of the ceiling joist is on the upper surface of the ceiling base plate It is joined and the ceiling base plate is supported.

  According to the unit building according to claim 3 of the present invention configured as above, the height of the floor joist is smaller than the height of the gap, and the upper surface of the floor joist is joined to the lower surface of the floor base plate, It is possible to reliably prevent the bottom surface of the floor joist from coming into contact with the top surface of the ceiling base plate on the downstairs side.

  Similarly, the height of the ceiling joist is smaller than the height of the gap, and the lower surface of the ceiling joist is joined to the upper surface of the ceiling base plate, so that the upper surface of the ceiling joist contacts the lower surface of the floor base plate on the upper floor. Can be reliably prevented.

  A unit building according to a fourth aspect of the present invention is the unit building according to any one of the first to third aspects, wherein the ceiling joists and the floor joists are at least along a direction orthogonal to the respective longitudinal directions. Some of them are alternately arranged.

  According to the unit building according to claim 4 of the present invention, the ceiling joists and the floor joists are alternately arranged, so that the interval between the joists to be supported is extremely non-uniform in both the floor base plate and the ceiling base plate. Therefore, it is possible to make the strength (load resistance) uniform in both the floor base plate and the ceiling base plate.

  The building unit according to the present invention is a downstairs building unit having a ceiling structure that also serves as a floor structure of an upper floor building unit among a plurality of building units that are connected to form a unit building, or a downstairs building In the upper floor building unit having a floor structure that also serves as the ceiling structure of the unit, the floor structure and the ceiling structure include a floor base plate that forms a floor surface of the upper floor building unit, and a gap between the floor base plate and the floor base plate. A ceiling base plate which is provided below the floor base plate and forms a ceiling surface of the downstairs building unit, and is disposed in the gap, and an upper surface thereof is joined to a lower surface of the floor base plate and A floor joist that is not in contact with the ceiling base plate and supports the base plate, and is disposed in the gap, and a lower surface thereof is joined to an upper surface of the ceiling base plate to support the ceiling base plate and The base plate is characterized in that a ceiling joists of the non-contact.

  According to the building unit according to the present invention configured as described above, the floor joists that support and support the floor base plate from below are not directly in contact with the ceiling base plate on the downstairs side formed below the floor joist. The upper floor sound generated on the floor base plate is transmitted to the floor joist, but is not directly transmitted from the floor joist to the lower floor ceiling base plate.

  In addition, the ceiling joists that support and support the ceiling base plate from above are not in direct contact with the floor base plate on the upper floor formed above the floor joists. However, it is not transmitted directly from the ceiling joists to the floor base plate on the upper floor.

  Therefore, the sound insulation between the upper floor and the lower floor can be improved as compared with the conventional art.

  In each of the above-described present inventions, the building unit on the upper floor not having a floor structure is, for example, a balcony unit, a roof unit having a loft (not having a floor structure) inside, or a normal living room A building unit (not having a floor structure) for forming a space can be applied.

  Further, in the building unit and unit building described above, the space between the floor base plate and the ceiling base plate is filled with a sound absorbing material such as glass wool to further improve the sound insulation and fire resistance. Is preferred.

  According to the unit building and the building unit according to the present invention, it is possible to improve the sound insulation between the building unit on the upper floor and the building unit on the lower floor than before.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of a unit building and a building unit of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a principal part showing an embodiment of a unit building and a building unit according to the present invention, and FIG. 2 is a diagram showing a building unit 32 as one unit constituting the unit building 100 shown in FIG. 3) is a vertical cross-sectional view along the x direction, (b) a cross-sectional view along the y direction), and FIG. 4 is a plan view showing the structure 32b, FIG. 4 is a cross-sectional view taken along lines AA, BB, and CC of the ceiling structure 32b shown in FIG. 3, and FIG. 5 is a ceiling shown in FIG. FIG. 6 is a sectional view taken along lines FF and GG of the ceiling structure 32b shown in FIG. 3, respectively. .

  The unit building 100 shown in the figure is composed of eight building units 11, 12,..., 18 constituting the first floor portion (reference numerals 16 and 18 are not visible in FIG. Are installed on a foundation (not shown) according to a preset arrangement, and above these first floor parts, six building units 31, 32,..., 36 constituting the second floor parts are installed, Further, a roof part is formed above the second floor part, and a roof unit 50 as one form of the building unit is installed. The building units adjacent to each other in the direction xyz are connected to each other by fastening members such as predetermined joint bolts and nuts to form a single building.

  Here, in the roof unit 50 (the lower side in the figure), there are lofts (1st loft 61, second loft 62) 60 (first loft 61, second loft 62) which do not have a floor structure. In the factory which manufactures 50, it is installed in the inside of the roof unit 50 previously.

  Further, the roof unit 50 is actually divided into a plurality of parts, and the loft 60 is also divided corresponding to these divided parts. As an example, when the roof unit 50 is divided into two in the x direction, the first loft part 61 or the second loft part 62 is formed for each of the divided parts, and the unit building In a building construction site connected as 100, by connecting these divided parts, a single loft 60 in which the first loft part 61 and the second loft part 62 communicate with each other is formed.

  In the unit building 100 of the embodiment shown in FIG. 1, an opening 35 h that communicates the second loft part 62 and the building unit 35 disposed immediately below the second loft part 62 is provided in the building unit 35. It is formed in a ceiling structure 35b (floor structure of the second loft part 62), and the stairs 20 that leads to this opening is provided in the building unit 35.

  Each building unit 11-18, 31-36 has a standard size with an outer floor of about 4.7m in the long direction x about 2.5m in the short direction (internal effective floor: about 4.5m x about 2.3m) The building units 12, 13, 15, and 16 are standardized so that the long direction is longer than the standard size, but the short direction matches the standard size. Further, the building units 17 and 18 have the same size as the building units 12, 13, 15, and 16 in the long direction, and the short direction is standardized to a length shorter than the standard size.

  And each building unit 11-18, 31-36 is equipped with the floor structure 32a in the lower part and the ceiling structure 32b in the upper part like the building unit 32 shown in FIG. As for the building units 32 and 35 to which the roof unit 50 is connected, that is, for the building units 32 and 35 on the downstairs side arranged immediately below the roof unit 50, the building unit 32 (only by the description by the building unit 32). Therefore, the floor structure of the loft 60 is integrally provided on the building unit 32 side and the ceiling structure 32b of the building unit 35 unless otherwise specified. ing.

  The building unit 32 as a whole has a substantially rectangular parallelepiped shape due to a steel skeleton structure including a floor joist 32c, a ceiling joist 32d, and a pillar 32e.

  Here, the floor structure 32a of the building unit 32 is formed by a floor base plate 32i that forms the floor surface of the building unit 32 and a floor joist 32c that supports the floor base plate 32i from below.

  On the other hand, the ceiling structure 32b is a structure that also serves as the floor structure of the first loft 61. The floor foundation plate 32f that forms the floor surface of the first loft 61 formed on the roof unit 50, and the floor foundation plate 32f A ceiling foundation board 32k that forms the ceiling surface of the building unit 32, a floor joist 32j that supports the floor foundation board 32f, and a ceiling joist 32d that supports the ceiling foundation board 32k, which are provided below the floor foundation board 32f via a gap. And.

  The floor base plate 32f and the ceiling base plate 32k are formed of, for example, a particle board as a base surface material.

  The floor joist 32j of the floor structure of the first loft 61 that also serves as the ceiling structure 32b is near both ends along the direction orthogonal to the longitudinal direction (cross-sectional portion along the line AA in FIG. 4 (a)) and the cross-sectional portion along the line BB (FIG. 4 (b))), the ceiling base plate 32k is disposed in a non-contact manner in the gap, and the ceiling joist 32d is also near the both ends. Except for the above, in the gap, it is disposed in non-contact with the floor base plate 32f.

  Specifically, the height of the floor joist 32j and the height of the ceiling joist 32d are both smaller than the height of the gap, and the upper surface of the floor joist 32j is joined to the lower surface of the floor base plate 32f to be the floor base plate 32f. The lower surface of the ceiling joist 32d is joined to the upper surface of the ceiling base plate 32k to support the ceiling base plate 32k (FIGS. 2A, 4C, 5B, and 6). (See (b)).

  And the ceiling joist 32d and the floor joist 32j of the ceiling structure 32b are near both ends along the direction orthogonal to the respective longitudinal directions (cross-sectional portion along the line AA in FIG. 3 (FIG. 4A)). Except for the cross-sectional portion along line B-B (FIG. 4B), they are alternately arranged (see FIGS. 2A, 5B, and 6B).

  Further, as shown in FIGS. 5 and 6, a sound absorbing material 32m such as glass wool is filled in the gap between the floor base plate 32f and the ceiling base plate 32k.

  In addition, you may provide the decorative board which decorated the surface (lower surface side) further on the lower surface side of the ceiling base plate 32k, and also on the upper surface side of the floor base plate 32f, further irregularity (flooring floor) and carpet A floor finishing member such as the above may be laid.

  According to the unit building 100 and the building unit 32 according to the present embodiment configured as described above, the floor joists 32j that are in contact with and supported by the floor base plate 32f from below are the ceiling base plates 32k on the downstairs side formed below the floor joists 32j. Since the floor upper plate 32f is transmitted to the floor joist 32j, the floor joist 32j is not directly transmitted to the lower floor ceiling base plate 32k.

  Further, the ceiling joist 32d supported in contact with the ceiling base plate 32k from above is not directly in contact with the floor base plate 32f on the floor (loft 61) formed above the ceiling joist 32d. The sound on the lower floor side is transmitted to the ceiling joist 32d, but is not transmitted directly from the ceiling joist 32d to the floor base plate 32f on the upper floor.

  Therefore, the sound insulation between the upper floor and the lower floor can be improved as compared with the conventional art.

  Further, the floor joist 32j is smaller in height than the gap between the ceiling base plate 32k and the floor base plate 32f, and the upper surface of the floor joist 32j is joined to the lower surface of the floor base plate 32f. It is possible to physically and completely prevent the lower surface of 32j from coming into contact with the upper surface of the downstairs ceiling base plate 32k.

  Similarly, since the height of the ceiling joist 32d is smaller than the height of the gap and the lower surface of the ceiling joist 32d is joined to the upper surface of the ceiling base plate 32k, the upper surface of the ceiling joist 32d is the floor base plate 32f of the loft 61. Contact with the lower surface of the film can be physically and completely prevented.

  Further, the ceiling joists 32d and the floor joists 32j are alternately arranged, so that both the floor base plate 32f and the ceiling base plate 32k have a space between the floor joists 32j and 32j to be supported and a space between the ceiling joists 32d and 32d. , Each of the floor base plate 32f and the ceiling base plate 32k can be made uniform in strength (load resistance).

  In addition, since the ceiling structure 32b of the building unit 32 is a structure that also serves as the underfloor structure of the loft 61 on the floor, the combined height of the ceiling structure and the underfloor structure can be kept low. The height of the loft 61 on the upper floor can be secured high without lowering the ceiling height of the building unit 32 (the height of the space from the floor lower surface to the ceiling surface of the building unit 32).

  In the unit building 100 and the building unit 32 according to the above-described embodiment, the space between the floor base plate 32f and the ceiling base plate 32k is filled with the sound absorbing material 32m such as glass wool. The sound insulation property with 32 can be further improved.

  Moreover, in the case of using glass wool as the sound absorbing material 32m, the fireproof performance can be improved by the property of flame retardancy of glass wool.

  In the unit building 100 and the building unit 32 of the above-described embodiment, the ceiling structure 32b of the building unit 32 on the lower floor is the building unit on the upper floor with respect to the roof unit 50 and the building unit 32 that are connected to each other vertically. Contrary to this, the floor structure of the loft 61 of the roof unit 50 that is a building unit on the upper floor is the ceiling structure 32b of the building unit 32. The building unit 32 and the unit building 100 having such a structure also correspond to the embodiment of the building unit or unit building of the present invention.

It is a principal part perspective view which shows one Embodiment of the unit building and building unit which concern on this invention. It is a figure which shows the building unit 32 which is 1 unit which comprises the unit building shown in FIG. It is a top view which shows the ceiling structure of the building unit connected below the roof unit among the unit buildings shown in FIG. FIG. 4 is a cross-sectional view taken along lines AA, BB, and CC of the ceiling structure shown in FIG. 3. FIG. 4 is a cross-sectional view taken along lines DD and EE of the ceiling structure shown in FIG. 3. It is sectional drawing along each of the FF line and GG line of the ceiling structure shown in FIG.

Explanation of symbols

32 Building units (downstairs building units)
32b Ceiling structure 32d Ceiling joist 32f Floor base plate 32j Floor joist 32k Ceiling base plate 61 Loft (building unit on the upper floor)
100 unit building

Claims (5)

The upper floor building unit and the lower floor building unit arranged directly below the upper floor building unit are connected vertically, and the ceiling structure of the lower floor building unit is the floor of the upper floor building unit. In a unit building that also serves as a structure,
The floor structure and the ceiling structure are: a floor base plate that forms a floor surface of the upper floor building unit; and the lower floor building unit that is provided below the floor base plate via the floor base plate and a gap. A ceiling base plate that forms a ceiling surface; a floor joist that supports the floor base plate; and a ceiling joist that supports the ceiling base plate, wherein the floor joist is disposed in contact with the ceiling base plate, and the ceiling A joist is a unit building that is disposed in a non-contact manner on the floor base plate. The upper floor building unit and the lower floor building unit arranged directly below the upper floor building unit are connected vertically, and the ceiling structure of the lower floor building unit is the floor of the upper floor building unit. In a unit building that also serves as a structure,
The floor structure and the ceiling structure are: a floor base plate that forms a floor surface of the downstairs building unit; and the downstairs building unit provided below the floor base plate via the floor base plate and a gap. A ceiling base plate that forms a ceiling surface; a floor joist that supports the floor base plate; and a ceiling joist that supports the ceiling base plate, wherein the floor joist is disposed in contact with the ceiling base plate, and the ceiling A joist is a unit building that is disposed in a non-contact manner on the floor base plate.   The floor joists and the ceiling joists are disposed in the gap, the height of the floor joists and the height of the ceiling joists are both smaller than the height of the gap, and the upper surface of the floor joists are below the floor The bottom surface of the ceiling board is joined to the lower surface of the ground plate to support the floor foundation plate, and the lower surface of the ceiling joist is joined to the upper surface of the ceiling foundation plate to support the ceiling foundation plate. The listed unit building.   4. The ceiling joist and the floor joist are alternately arranged in at least a part along a direction orthogonal to the longitudinal direction of each of the joists. Unit building. Of multiple building units that are connected to form a unit building, the floor unit that has a ceiling structure that also serves as the floor structure of the building unit on the upper floor, or the floor that also serves as the ceiling structure of the building unit on the lower floor In the building unit on the upper floor with structure,
The floor structure and the ceiling structure are: a floor base plate that forms a floor surface of the upper floor building unit; and the lower floor building unit that is provided below the floor base plate via the floor base plate and a gap. A ceiling base plate that forms a ceiling surface; and the floor base plate disposed in the gap, the upper surface of which is joined to the lower surface of the floor base plate to support the floor base plate, and is not in contact with the ceiling base plate; A building unit comprising a ceiling joist disposed in a space, a lower surface of which is joined to an upper surface of the ceiling base plate to support the ceiling base plate, and which is not in contact with the floor base plate.

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