JP5356000B2 - Unit-type building wall structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a parting wall structure of a unit building, which can accelerate a cost reducing effect by constructing a parting wall by taking advantage of the characteristics of a building unit. <P>SOLUTION: In the unit building including the plurality of building units, a ceiling girder 22 of the building unit and a floor girder 23 thereof comprise a web which has a plate surface directed in a vertical direction and a pair of flanges which are elongated sideward from both upper and lower ends of the web, and are made of channel steel which is formed with a groove portion opened on the lateral side opposite to the web in the state of being enclosed with the web and the flange. The parting walls 32 and 35 in the ceiling and the underfloor parting wall 33 are constituted by housing parting wall panels 90 and 100 in the groove portions of the ceiling and floor girders 22 and 23, respectively. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a wall structure of a unit type building.

  In collective housing, it is required to install a boundary wall between the dwelling units. The boundary wall is for ensuring fire prevention performance that suppresses the spread of fire between the dwelling units, soundproof performance that suppresses sound leakage between the dwelling units, crime prevention performance that suppresses intrusion of people between the dwelling units, and the like. The border walls are also provided behind the ceiling and between the upper and lower floors.

Here, as the boundary wall structure under the ceiling, between the upper and lower floors, and under the floor in the unit type building, a boundary wall structure spanning between the large beams so as to be parallel to the small beams of the building unit (for example, see Patent Document 1) ) And a field wall structure (see, for example, Patent Document 2) that is fixed on a plurality of small beams so as to be orthogonal to the small beams of the building unit.
JP-A-8-177124 Japanese Examined Patent Publication No. 6-72457

  In the unit type building, it is expected that a cost reduction effect is obtained by manufacturing a building unit in a factory in advance and extremely reducing the number of man-hours in the field construction. In order to obtain the cost reduction effect, it is necessary not only to use a building unit but also to improve the number of members as much as possible even in the boundary wall structure. However, the above conventional boundary wall structures do not sufficiently bring out the advantages of the building unit, and there is still room for improvement.

  This invention is made in view of the said situation, and provides the boundary wall structure of the unit type building which can further promote a cost reduction effect by constructing a boundary wall using the characteristic of a building unit. Is the main purpose.

  In order to solve the above-mentioned problem, the first invention provides a boundary of a unit-type building configured by using a plurality of building units each having a plurality of columns and ceiling beams and floor beams connected to the top and bottom of the columns. It is a wall structure, and at least a part of the ceiling beam and the floor beam has a web whose plate surface extends in the vertical direction, and a pair of flanges extending laterally from the upper and lower ends of the web. The groove wall steel is formed by a grooved steel formed with a groove portion that is surrounded and opened to the side opposite to the web, and the field wall constituting material is accommodated in the groove portion of the groove shape steel, thereby Is configured.

  According to the first invention, at least a part of the ceiling beam and the floor beam is formed of channel steel, and the field wall is formed using the channel steel, so that the indoor space between the floor and the ceiling Not only that, the ceiling wall or the wall under the floor can be manufactured in advance in the factory. Moreover, because the field wall is constructed in the area surrounded by the web and flange using the shape of the grooved steel, the field wall can be stored in the beam without occupying other spaces, The degree of freedom of space can be increased. That is, the cost reduction effect can be further promoted by constructing the boundary wall by utilizing the characteristics of the building unit.

  According to a second invention, in the first invention, portions of the ceiling beam and the floor beam that form the outer periphery of the building unit are a ceiling beam and a floor beam, and the ceiling beam and the floor beam are the grooves. It is made of mold steel, and a part of the ceiling girder or floor girder is a boundary wall.

  According to 2nd invention, the boundary between building units becomes a boundary wall. That is, in the case of a building unit installed side by side, the boundary wall constituting material is stored in each adjacent large beam, so that these adjacent large beams constitute the boundary wall as a whole. In addition, in the case of building units installed vertically, the ceiling wall beams and floor beams arranged in the vertical direction constitute a series of wall walls by storing the wall material in the adjacent ceiling beam and floor beam. It will be.

  According to a third invention, in the second invention, a ceiling beam is fixed to the ceiling beam, and a floor beam is fixed to the floor beam. The panel-like field wall constituting material is accommodated between the adjacent small beams in the groove portion of the large beam.

  According to the third invention, even if the small beam is fixed to the large beam and the field wall component is provided by the panel structure, the field wall component is provided in the large beam between the small beams. The wall can be constructed by putting In addition, if a small beam is obstructed in a large beam and a gap is generated between panels, a gap filling material having soundproofing performance and fireproofing performance may be attached to these gaps, and the gap filling material is elastically deformable. Then, the gap can be filled without worrying about dimensional errors. Almost all of these configurations can also be performed at the building unit manufacturing plant.

  According to a fourth invention, in any one of the first to third inventions, the building units are stacked one above the other, and the upper floor beam formed by the channel steel of the upper floor unit of the building units and the lower floor beam. Lower floor ceiling beams formed by channel steel of the floor unit are provided close to each other in the vertical direction, and these upper floor beams and lower floor ceiling beams are positioned so as to be in the same place in plan view. Thus, a boundary wall is formed at a connection portion between the upper floor unit and the lower floor unit by the upper floor beam and the lower floor ceiling beam.

  According to the fourth invention, the upper floor beam of the upper floor unit and the lower floor beam of the lower floor unit are arranged close to each other, and the space between the upper floor and the lower floor is accommodated by storing the boundary wall constituent material therein. A series of boundary walls can be formed, and all or most of the boundary walls between the upper and lower floors can be manufactured in a factory. Therefore, the man-hour reduction effect at the construction site is increased.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, when the upper floor unit is installed above the lower floor unit, a dimension is set such that a gap is formed between the upper end of the lower floor ceiling beam and the lower end of the upper floor beam. In the natural state, the gap filling material having a larger vertical dimension and having elasticity in at least the vertical direction is interposed.

  According to the fifth invention, by filling the space between the upper and lower units with the gap filling material, the lower floor beam is lowered from the upper floor beam without depending on the high-precision positioning between the upper floor beam and the lower floor beam. A series of inter-story walls leading to the ceiling beams can be constructed.

  It is not always necessary to attach the gap filling material at the construction site, and it is sufficient to position the gap filling material at least one of the lower surface of the upper floor beam and the upper surface of the lower floor ceiling beam at the factory by bonding or the like. This can contribute to further man-hour reduction on site.

  A sixth aspect of the present invention is a unit wall structure of a unit type building constituted by using a plurality of building units each having a plurality of columns and ceiling beams and floor beams connected to the upper and lower sides thereof. Of the building units stacked on the upper floor unit, a pair of opposed floor beams are provided as the floor beams, and the floor beams are provided at both ends of the lower floor wall formed under the floor of the upper floor unit. A hook part that is hooked up is provided, and the under floor wall is suspended and supported by the hook part being hooked on the floor girder.

  According to the sixth aspect of the present invention, in the case of constructing the lower floor boundary wall so as to intersect (preferably orthogonally) the predetermined floor beam of the upper floor unit below the floor of the upper floor unit (that is, the ceiling behind the lower floor unit). The underfloor wall can be easily constructed by hooking a hook portion between a pair of opposing upper floor beams to support the underfloor wall in a suspended state. Here, since the floor girder receives the load of the underfloor wall, the support rigidity of the underfloor wall becomes sufficiently high, and a member for increasing the support rigidity becomes unnecessary. Therefore, an existing building unit can be used, which is advantageous in terms of manufacturing cost.

  A seventh invention is the sixth invention, wherein a floor joist for supporting a floor material from below is fixed on the floor beam, and the hooking portion is disposed adjacent to the floor joist, The positional displacement of the lower floor wall is suppressed by fixing or locking the hook portion to the floor joist.

  According to the seventh aspect of the invention, since the lower floor wall is not only hooked on the floor beam, but also fixed to the floor joist, it is possible to avoid a position shift that causes the floor wall to fall off the floor beam due to vibration or the like. be able to. Here, since the floor joists installed on the floor beams are originally necessary members, no new members other than fixtures such as fixing pins are required even when they are fixed, so that the manufacturing cost increases. There is nothing.

  In addition, regarding the relationship between the floor joists and the hooks, the floor joists are placed slightly off the inner side of the unit on the floor girder, so that the floor underneath the unit on the floor girder It is possible to provide a margin for the boundary wall. Further, if the height of the lower floor wall including the hook portion is equal to or lower than the upper end position of the floor joist, it does not interfere with the formation of the upper floor.

  According to an eighth invention, in the sixth or seventh invention, a plurality of floor beams extend in parallel between the pair of floor beams so as to be orthogonal to the floor beams, and both ends of each floor beam are respectively the floor beams. The lower floor wall is disposed between the floor beams.

  According to the eighth invention, when the underfloor wall is suspended and supported by the floor girder, the floor girder is installed in a state where it does not get in the way while enjoying the effects of the sixth or seventh invention. be able to.

  A ninth invention is a boundary wall structure of a unit type building configured by using a plurality of building units each having a plurality of pillars and a ceiling beam and a floor beam connected to the top and bottom thereof, A ceiling backing material for fixing an upper end of a boundary wall extending between the ceiling surface material and the floor surface material of the building unit is fixed to the ceiling beam or the ceiling surface material fixed to the ceiling beam, and the ceiling beam is A ceiling back wall is disposed at the installed height position, and a lower end portion of the ceiling back wall is fixed to the ceiling backing material.

  According to the ninth aspect of the invention, a ceiling back wall is constructed on the ceiling of the building unit (the location below the floor of the upper floor unit when there is an upper floor unit, or the back of the hut when there is no upper floor unit). In this case, the ceiling-back wall can be easily constructed by using the ceiling backing material used for screwing or the like when fixing the wall that partitions the living space of the dwelling unit. Here, since the ceiling backing material receives the load on the ceiling back wall, the support rigidity of the ceiling back wall becomes sufficiently high, and a member such as a small beam only for increasing the support rigidity is not necessary. Therefore, an existing building unit can be used, which is advantageous in terms of manufacturing cost.

  The ceiling backing material is generally composed of plywood or the like installed on the ceiling back surface of a ceiling surface material such as gypsum board, but is not limited to plywood and is suitable for screwing and the like. And what is necessary is just to have load bearing performance higher than a ceiling surface material.

  In a tenth aspect based on the ninth aspect, a plurality of ceiling beams extend in parallel between the pair of ceiling beams so as to be orthogonal to the ceiling beams, and both ends of each ceiling beam are fixed to the ceiling beams. The ceiling back wall is arranged between the ceiling beams.

  According to the tenth invention, it is possible to install the ceiling back wall in a state where the ceiling beam does not get in the way while enjoying the effect of the ninth invention.

  An eleventh aspect of the present invention is a unit-type building boundary wall structure configured by using a plurality of building units each having a plurality of columns and ceiling beams and floor beams connected to the upper and lower sides thereof. Of the building units stacked in the upper floor unit, a pair of large floor beams facing each other as the floor beam is provided, and at both ends of the upper floor lower boundary wall formed under the floor of the upper floor unit, A hook portion is provided to be hooked on the floor girder, and the upper floor lower boundary wall is suspended and supported by the hook portion being hooked on the floor girder. In addition, the ceiling beam of the lower floor unit among the building units stacked up and down or the ceiling surface material fixed to the ceiling beam has an upper end of the boundary wall extending between the ceiling surface material and the floor surface material of the lower floor unit. A ceiling backing material is fixed, and a lower floor ceiling back wall is disposed at a height where the ceiling beam of the lower floor unit is installed, and a lower end portion of the lower floor ceiling back wall Is fixed to the ceiling backing material. Further, the upper floor lower boundary wall and the lower floor ceiling back boundary wall are positioned so as to be in the same place in plan view, so that the upper floor lower boundary wall and the lower floor ceiling back boundary wall are A boundary wall is formed at a connecting portion between the upper floor unit and the lower floor unit.

  According to the eleventh aspect, the effects of the sixth aspect and the ninth aspect can be obtained at once. Moreover, the upper floor unit does not need to extend below the upper floor unit below the upper floor unit, and the lower floor unit does not need to extend the lower ceiling back wall above the lower unit. Therefore, even if an upper floor lower boundary wall and a lower floor ceiling back boundary wall are provided in the building unit in advance in the factory, it is possible to fit within the height range of the pillar in each building unit. As a result, there is an advantage that the boundary wall does not get in the way in the manufacturing process and the conveying process of the building unit.

  In a twelfth aspect according to the eleventh aspect, when an upper floor unit is installed above the lower floor unit, a gap is generated between the upper end of the lower floor ceiling back wall and the lower end of the upper floor lower wall. It is characterized in that a gap filling material having a vertical dimension larger than that of the gap and having elasticity in at least the vertical direction is interposed.

  According to the twelfth aspect, by filling the space between the upper and lower units with the gap filling material, the lower floor ceiling is not dependent on the high-precision positioning between the lower floor ceiling back boundary wall and the upper floor lower boundary wall. A series of inter-level walls can be constructed from the back wall to the upper floor and lower floor walls.

  Note that the gap filling material does not necessarily have to be attached at the construction site, and the gap filling material may be positioned at least one of the upper surface of the lower floor ceiling back wall or the lower surface of the upper floor lower wall at the factory by bonding or the like By doing so, it can contribute to further man-hour reduction at the site.

  In the above invention, the “boundary wall component” in the first invention, the “underfloor wall” in the sixth invention, the “ceiling back wall” in the ninth invention, the “upper floor under the wall” in the eleventh invention It is preferable in terms of handling that the “boundary wall” and the “lower floor ceiling back boundary wall” are configured as a boundary wall panel having a panel structure alone. Specifically, as the wall panel of the “boundary wall constituent material”, a face material that has fire resistance or fireproof performance and soundproof performance and is fixedly supported in a direction facing the web in the groove portion of the large beam (preferably Can be equipped with multiple plaster boards. Further, it is more preferable to insert a soundproofing material (preferably glass wool or rock wool) between the face material and the large beam web.

  In addition, as the wall panels of the “floor lower wall”, “ceiling back wall”, “upper floor lower wall” and “lower floor ceiling back wall”, specifically, they have fireproof or fireproof performance. It is conceivable to have a face material (preferably a plurality of laminated gypsum boards) having soundproofing performance and a support frame that is installed on one face of the face material and on which the face material is fixedly supported. Further, it is more preferable to insert a soundproof material (preferably glass wool or rock wool) in a region surrounded by the support frame and the face material.

  When such a wall panel is applied to the “ceiling back wall” of the ninth invention and the “lower ceiling back wall” of the eleventh invention, a screw or the like is hit against the support frame. It is better to fix the field wall panel. In addition, when such a field wall panel is applied to the “floor lower wall” of the sixth invention and the “upper floor lower wall” of the eleventh invention, a part of the support frame (specifically, the upper side) The hook portion can be formed by further extending the upper side support frame portion extending along the surface from the face material.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings. In the present embodiment, the building is embodied as an apartment house in which a plurality of dwelling units are assembled to form one building, and in particular, the building is a two-story unit type building constructed by a steel frame unit construction method. . FIG. 1 is a front view showing a schematic configuration of a building 10 in the present embodiment, and FIG. 2 is a plan view showing an arrangement of building units 20 constituting the building 10.

  As shown in FIG. 1, a building 10 includes a first floor portion 12 as a lower floor portion provided on a foundation 11, and a second floor portion as an upper floor portion provided adjacent to the upper portion of the first floor portion 12. 13 and a roof portion 14 provided above the second floor portion 13. The foundation 11 is composed of a cloth foundation, and is continuously provided at a site surrounding at least the outer edge of the building 10. And the building unit 20 of the first floor part 12 is installed on the upper surface of the rising part of the foundation 11. Below the building 10, an underfloor space 15 is formed so as to be surrounded by the foundation 11.

  In the present embodiment, as shown in FIG. 2, the first floor portion 12 and the second floor portion 13 are both constructed by six building units 20, and four building units 20 are arranged on the same floor. Two dwelling units A1, A2, A3, A4 are formed. The number of units and the number of dwelling units on each floor are arbitrary, and a plurality of dwelling units may be formed by the plurality of building units 20.

  Between each adjacent dwelling unit A1-A4 (boundary part), the boundary walls 30 and 40 as a door boundary wall are provided. Here, the boundary wall 30 separates between the dwelling unit A1 and the dwelling unit A2 and between the dwelling unit A3 and the dwelling unit A4, and is along the docking line DL (unit boundary line) between the building units 20. In other words, the boundary wall 40 is provided between the dwelling unit A1 and the dwelling unit A3 and between the dwelling unit A2 and the dwelling unit A4. It is not along the (unit boundary line), that is, provided at a position different from the docking line DL. In addition, in FIG. 2, although it seems that the boundary wall 30 is provided in the clearance gap between each unit, this only shows the boundary wall installation place in the whole building, and details, such as an installation place, are shown. Will be described later.

  As shown in FIG. 1, the boundary walls 30 and 40 extend in the vertical direction from the floor surface of the first floor portion 12 to the field plate of the roof portion 14. Fireproof performance and soundproof performance are ensured.

  Next, the structure of the building unit 20 is demonstrated using FIG. The building unit 20 includes four columns 21 disposed at the four corners thereof, and four ceiling beams 22 and floor beams 23 that respectively connect the upper end and the lower end of each column 21. A rectangular frame (frame) is formed by the pillars 21, the ceiling beams 22 and the floor beams 23. The column 21 is made of a square tube-shaped square steel. Moreover, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are installed so that the openings thereof face each other. Supplementing the ceiling beam 22 and the floor beam 23, these include a web whose plate surface extends in the vertical direction and a pair of flanges extending laterally from the upper and lower ends of the web, and the web surrounded by the web and the flange. It is comprised by the groove type steel in which the groove part opened in the side used as the opposite side was formed.

  A plurality of ceiling beams 25 are bridged and fixed between the large ceiling beams 22 of the long side portion (girder portion) of the building unit 20 facing each other. Similarly, a plurality of floor beams 26 are bridged and fixed at predetermined intervals between the large floor beams 23 of the long side portion (girder portion) of the building unit 20 facing each other. The ceiling beam 25 and the floor beam 26 are provided horizontally on the ceiling beam 22 and the floor beam 23 on the short side (wife side) at the same interval. For example, the ceiling beam 25 is made of lip groove steel, and the floor beam 26 is made of square steel. The ceiling member 27 is supported by the ceiling beam 25 and the floor member 28 is supported by the floor beam 26. Each building unit 20 used in the building 10 is manufactured in advance in a factory and then transported to a building site by a truck or the like.

  Next, the building structures of the boundary walls 30 and 40 and their peripheral parts will be described in detail. In the present embodiment, the boundary wall 30 provided at the same position as the docking line DL of the building unit 20 and the boundary wall 40 provided at a position different from the docking line DL of the building unit 20 have different configurations. 4 shows a cross-sectional configuration of the boundary wall 30 and its peripheral portion, and FIG. 5 shows a cross-sectional configuration of the boundary wall 40 and its peripheral portion. 4 is an X1-X1 cross-sectional view in FIG. 2, and FIG. 5 is an X2-X2 cross-sectional view in FIG. 4 and 5, for convenience of explanation, each component of the building unit 20 in the first floor portion 12 is represented by a ceiling beam 22A, a floor beam 23A, a ceiling beam 25A, a floor beam 26A, a ceiling surface material 27A, respectively. The floor surface material 28A is used, and the constituent elements of the building unit 20 in the second-floor portion 13 are a ceiling beam 22B, a floor beam 23B, a ceiling beam 25B, a floor beam 26B, a ceiling surface 27B, and a floor material 28B, respectively. 4 and 5 show the boundary line between the upper floor unit and the lower floor unit as a stacking line SL.

  Here, the detailed configuration of the building unit 20 will be described prior to the description of the boundary walls 30 and 40. First, the detailed configuration of the first floor portion 12 will be described.

  As shown in FIG. 4, a floor joist 51 (a joist upper joist) that supports the floor material 28A (floor material) from below is provided on the large floor beam 23A of the first floor portion 12 (specifically, on the upper flange). The floor material 28A is fixed on the floor joist 51 with screws, nails or the like. The floor material 28A is made of, for example, a particle board (plywood). Further, a floor connecting material 52 is provided between the two left and right floor members 28A provided on two adjacent floor beams 23A to form a floor surface flush with the floor member 28A (same height). It has been. The floor connecting material 52 is formed of the same material as the floor surface material 28A, and is fixed to the floor joist 51 with screws, nails or the like. An underfloor heat insulating material 53 is provided on the lower surface side of the floor surface material 28 </ b> A and the floor connecting material 52. Further, in the portion where the floor beam 26A is provided, as shown in FIG. 5, a floor joist 54 (beam joist) is provided on the floor beam 26A, and the floor material 28A is provided on the floor joist 54. Is fixed with screws or nails. The floor material 28A can be directly fixed to the floor beam 26A with screws, nails or the like.

  A field edge 55 (large beam field edge) is fixed to the ceiling large beam 22A (specifically, the lower flange) of the first floor portion 12 with screws or nails, and a ceiling surface member 27A is screwed to the lower surface of the field edge 55. It is fixed with nails. The ceiling surface material 27A is configured, for example, by stacking two plaster boards. In addition, a ceiling connecting member 56 that forms a ceiling surface that is flush with (same height as) the ceiling surface material 27A is provided between the two left and right ceiling surface materials 27A provided on the two adjacent ceiling beams 22A. ing. The ceiling connecting material 56 is formed of the same material as the ceiling surface material 27A, and is fixed to the field edge 55 with screws, nails, or the like. Further, in the portion where the ceiling beam 25A is provided, as shown in FIG. 5, the ceiling face material 27A is fixed to the ceiling beam 25A together with the field edge 57 (field edge for the beam) with screws, nails or the like. Has been.

  Note that the floor connecting material 52 and the ceiling connecting material 56 are assembled so as to fill the gaps between the floor portions and the ceiling portions between the units 20 after the installation of the building units 20 at the construction site.

  Next, the configuration of the second floor portion 13 will be described. A second-floor unit is installed above the first-floor unit, and a floor beam 23B of the second-floor portion 13 is provided above the ceiling beam 22A of the first-floor portion 12. In such a case, a gap is formed between the upper end of the first-floor ceiling beam 22A and the lower end of the second-floor beam 23B, and rock wool 58 as a gap filling material is disposed in a compressed state in this gap. . In the natural state, the rock wool 58 has a vertical dimension larger than the gap between the first-floor ceiling beam 22A and the second-floor beam 23B and has elasticity in at least the vertical direction. When assembled, it is crushed into a compressed state. The rock wool 58 is a fibrous member having excellent fire resistance, soundproofing, and heat insulating properties. The rock wool 58 can be attached at the construction site. However, in the unit manufacturing factory, the rock wool 58 is attached in advance to the large beam of the building unit 20 on either the upper floor side or the lower floor side. Is desirable.

  On the floor beam 23B (specifically, on the upper flange) of the second-floor portion 13 is provided a floor joist 61 (the upper beam joist) that supports the floor material 28B (floor material) from below, on the floor joist 61. The floor material 28B is fixed with screws, nails or the like. The floor material 28B is made of, for example, a particle board. Further, between the two left and right floor members 28B provided on the two adjacent floor beams 23B, a floor connecting member 62 that forms a floor surface flush with the floor member 28B (the same height) is provided. It has been. The floor connecting material 62 is formed of the same material as the floor surface material 28B, and is fixed to the floor joist 61 with screws, nails or the like. Rock wool 63 is disposed in a compressed state between the floor girder 23B and the floor material 28B. Further, at the portion where the floor beam 26B is provided, as shown in FIG. 5, the floor material 28B is attached to the floor joist 64 (beam joist) provided on the floor beam 26B by screws, nails or the like. The floor material 28B is fixed to the floor beam 26B directly by screws or nails.

  A field edge 67 (field beam edge) is fixed to the ceiling beam 22B (specifically, the lower flange) of the second floor portion 13 with screws or nails, and a ceiling surface material 27B is fixed to the lower surface of the field edge 67 with screws or nails. It is fixed by etc. The ceiling surface material 27B is configured, for example, by stacking two plaster boards. Further, between the two left and right ceiling surface members 27B provided on the two adjacent ceiling beams 22B, there is provided a ceiling connecting material 68 that forms a ceiling surface flush with the ceiling surface material 27B (same height). ing. The ceiling connecting material 68 is formed of the same material as the ceiling surface material 27B, and is fixed to the field edge 67 with screws, nails, or the like. Further, in the portion where the ceiling beam 25B is provided, as shown in FIG. 5, the ceiling surface material 27B is fixed to the ceiling beam 25B together with the field edge 69 (field edge for the beam) with screws, nails or the like. Has been.

  In addition, the floor connecting material 62 and the ceiling connecting material 68 are the floor portions between the units 20 after the installation of the building units 20 on the construction site, similarly to the floor connecting material 52 and the ceiling connecting material 56 of the first floor portion 12. And it is assembled so as to fill the gap in the ceiling part.

  Moreover, in the building 10 of this embodiment, it has the structure by which an attic room is formed in the roof part 14, and the attic floor for forming the floor part of an attic room above the ceiling large beam 22B of the second floor part 13 is comprised. Components are installed. Specifically, a plurality of floor beams 72 are connected to the ceiling beam 22B (one of the ceiling girder beam and the ceiling girder beam) of the second floor portion 13 using a bracket 71. An attic floor material 73 is fixed to the upper surface of the floor beam 72 by screws, nails or the like. Glass wool 74 is provided on the lower surface side of the attic floor material 73. Further, between two adjacent ceiling beams 22B (gap between the webs), the glass wool 75 is sandwiched between the ceiling beam 22B (specifically, the bracket 71) and the attic floor material 73. Is provided.

  Incidentally, in the configuration shown in FIG. 4, the configurations of the first-floor ceiling portion and the second-floor floor portion are different between the left side and the right side of the drawing with the boundary wall 30 at the center portion interposed therebetween. That is, on both the left and right sides of the figure, the glass wool 65 is installed on the upper surface of the ceiling face material 27A that has a different thickness at the ceiling portion of the first floor and the ceiling face material 27A is thicker (right side in the figure). ing. Further, on the right and left sides of the figure, the structure of the floor material of the second floor is different, and on the right side of the figure, the floor material 28B is composed of particle board and gypsum board, and the finished floor material 66 is on the upper surface. It is installed in a stacked state.

  In the above configuration, particularly in the right part of the figure, the fireproof performance and the soundproof performance are enhanced between the rooms on the upper and lower floors. Therefore, it can be said that the configuration on the right side of the figure is a preferable configuration when the upper and lower floors are different dwelling units, and the configuration on the left side of the diagram is a preferable configuration when the upper and lower floors are the same dwelling unit.

  Next, the “boundary wall 30” will be described. As shown in FIG. 4, the boundary wall 30 includes a first-floor room boundary wall 31, a first-floor ceiling back-boundary wall 32, a second-floor lower-boundary wall 33, a second-floor room-boundary wall 34, and a second-floor ceiling back boundary in order from the first-floor floor portion. It can be separated into a wall 35 and an attic wall 36. Each of these boundary walls 31 to 36 will be described. In the present embodiment, the boundary wall 30 is composed of a pair of left and right wall structural members shown in FIG.

  The first-floor room boundary wall 31 has a horizontal space between the lower surface (ceiling surface) of the ceiling surface material 27A and the upper surface (floor surface) of the floor surface material 28A in the first-floor portion 12, that is, a plurality of first-floor room spaces. It is provided at a height position for partitioning. Specifically, the first-floor room boundary wall 31 includes a wall surface material 83 between an upper base material 81 provided on the ceiling surface material 27A of the building unit 20 and a lower base material 82 provided on the floor surface material 28A. It was installed over the bridge. The wall surface material 83 is configured by, for example, stacking two plaster boards. On the back surface of the wall material 83, rock wool 84, which is a coating material excellent in fire resistance, sound insulation, and the like, is provided.

  Further, the first floor ceiling back wall 32 is provided integrally with the ceiling beam 22A of the first floor portion 12. The first floor ceiling backside wall 32 is accommodated by a field wall panel 90 as a field wall structure in a space in the beam (grooved steel groove) surrounded by a pair of upper and lower flanges and a web between the upper and lower ceiling beams 22A. The details will be described with reference to FIG. 6A and 6B are perspective views showing details of the first-floor ceiling back boundary wall 32. FIG. 6A shows a state before assembly of the field wall panel 90 to the ceiling beam 22A, and FIG. 6B shows assembly of the field wall panel 90. The latter state is shown, and (c) shows an exploded state of the field wall panel 90. Reference numeral 96 in FIG. 6 denotes a bracket for connecting the ceiling beam 25A to the ceiling beam 22A.

  As shown in FIG. 6 (c), the boundary wall panel 90 has, for example, a wall surface material 91 formed by stacking two plaster boards, and substantially the same size (substantially the same vertical and horizontal dimensions) as the wall surface material 91. It consists of a plate-like glass wool 92 that is stacked on one side, and a block-shaped base material 93 that is assembled to the part of the glass wool 92 that is notched (in this embodiment, both longitudinal ends of the glass wool 92). It is configured by being integrated.

  Then, as shown in FIGS. 6A and 6B, the glass wool 92 is opposed to the web of the ceiling girder 22A (ceiling girder girder), and a predetermined gap is formed between the glass wool 92 and the girder web. Thus, the field wall panel 90 is assembled to the ceiling beam 22A. At this time, screws and nails are driven from the outside of the ceiling beam 22A in accordance with the position of the base material 93, so that the field wall panel 90 is fixed to the ceiling beam 22A. A ceiling beam 25A is connected to the ceiling beam 22A (ceiling beam) by a bracket 96 at a predetermined interval, and the field wall panel 90 is assembled by being divided into a plurality of pieces so as not to interfere with the ceiling beam 25A. . Block-shaped rock wool 94 is assembled to the gap formed by dividing the boundary wall panel 90 and the side surface of the column 21. The rock wool 94 is configured as a gap filling material having fireproof performance and soundproof performance, and further has flexibility (is elastically deformable). It is possible to fill the gap without worrying about.

  In the unit manufacturing factory, the building unit 20 of the first floor portion 12 has one wall structure (wall surface material 83 or the like) constituting the first floor room boundary wall 31 and one of the first floor ceiling back boundary walls 32 constituting the first floor ceiling wall 32. The wall panel 90 is provided integrally.

  Returning to the description of FIG. 4, the second floor lower boundary wall 33 is integrally provided on the floor beam 23 </ b> B of the second floor portion 13. The second-floor lower floor wall 33 accommodates a wall panel 100 as a field wall structure in a space in the beam (grooved steel groove) surrounded by a pair of upper and lower flanges and a web between the upper and lower flanges 23B. The details will be described with reference to FIG. FIG. 7 is a perspective view showing details of the second floor lower boundary wall 33, (a) shows a state before the assembly of the field wall panel 100 to the floor beam 23 </ b> B, and (b) shows a state after the assembly of the field wall panel 100. A state is shown, (c) shows the disassembled state of the field wall panel 100. In addition, the code | symbol 106 in FIG. 7 is a bracket for connecting the floor small beam 26B to the floor large beam 23B.

  As shown in FIG.7 (c), the boundary wall panel 100 has the wall material 101 comprised, for example by stacking two sheets of gypsum board, and the magnitude | size (substantially the same length and width dimension) as the wall surface material 101, for example. It consists of a plate-like glass wool 102 that is stacked on one side, and a block-like base material 103 that is assembled to a portion where a part of the glass wool 102 is cut out (in this embodiment, both longitudinal ends of the glass wool 102). It is configured by being integrated.

  Then, as shown in FIGS. 7A and 7B, the glass wool 102 is opposed to the web of the floor girder 23B (floor girder girder), and a predetermined gap is formed between the glass wool 102 and the girder web. Thus, the field wall panel 100 is assembled to the floor beam 23B. At this time, screws or nails are driven from the outside of the floor beam 23B in accordance with the position of the base material 103, so that the field wall panel 100 is fixed to the floor beam 23B. A floor beam 26B is connected to the floor beam 23B (floor beam) by a bracket 106 at a predetermined interval, and the field wall panel 100 is assembled by being divided into a plurality of pieces so as not to interfere with the floor beam 26B. . Block-shaped rock wool 104 is assembled to the gap portion formed by dividing the boundary wall panel 100 and the side surface portion of the column 21. The rock wool 104 is configured as a gap filling material having fireproof performance and soundproof performance, and further has flexibility (it can be elastically deformed). It is possible to fill the gap without worrying about.

  Returning again to the description of FIG. The second-floor room wall 34 is a height that partitions the space between the lower surface (ceiling surface) of the ceiling surface material 27B and the upper surface (floor surface) of the floor surface material 28B in the second-floor portion 13, that is, the second-floor room space portion in the horizontal direction. It is provided in the position. The second-floor room boundary wall 34 has the same configuration as that of the first-floor room boundary wall 31 described above. In FIG. The explanation is omitted here.

  The second-floor ceiling back wall 35 is provided integrally with the ceiling beam 22B of the second-floor portion 13. The second floor ceiling back wall 35 has the same configuration as the first floor ceiling back wall 32 described above. In FIG. 4, the ceiling large beam 22B is surrounded by a pair of upper and lower flanges and a web between them. A configuration is shown in which a field wall panel 90 (see FIG. 6 for details) is accommodated in a space portion in the beam (groove portion of channel steel). I will omit the explanation here.

  In the unit manufacturing factory, the building unit 20 of the second floor portion 13 has one wall panel 100 constituting the second floor lower boundary wall 33 and one wall structure constituting the second floor room boundary wall 34 (wall surface material 83 and the like). And one of the wall panels 90 constituting the second floor ceiling back wall 35 are integrally provided.

  The attic boundary wall 36 is provided in the roof portion 14 between the lower surface of a field board (not shown) and the upper surface of the attic floor surface material 73, that is, at a height position that partitions the attic space portion into a plurality of portions in the horizontal direction. The attic boundary wall 36 has the same configuration as that of the first-floor room boundary wall 31 described above. In FIG. 4, the same member number as that of the first-floor boundary wall 31 is assigned to the configuration of the attic boundary wall 36. The explanation is omitted here.

  Next, the “boundary wall 40” will be described. As shown in FIG. 5, the boundary wall 40 includes, in order from the first floor, the first floor room boundary wall 41, the first floor ceiling back wall 42, the second floor lower boundary wall 43, the second floor room boundary wall 44, and the second floor ceiling back boundary. It can be separated into a wall 45 and an attic wall 46. Among these boundary walls 41 to 46, the first-floor room wall 41 and the second-floor room wall 44 have the same configuration as the first-floor room wall 31 and the second-floor room wall 34 of the wall 30. Therefore, these boundary walls 41 and 44 are shown with the same member numbers (the same member numbers as in FIG. 4) in FIG. 5, and the description thereof is omitted here. Below, a structure is demonstrated in detail about the 1st floor ceiling back wall 42, the 2nd floor lower floor wall 43, the 2nd floor ceiling back wall 45, and the attic wall 46 which are the structures different from the wall 30. FIG. In the present embodiment, the boundary wall 40 is composed of a pair of left and right wall structural members shown in FIG.

  As described above, the boundary wall 40 is provided at a position different from the docking line DL of the building unit 20, and FIG. 5 does not show the ceiling large beam 22 and the floor large beam 23, but instead replaces the ceiling small beam. A beam 25 and a floor beam 26 are shown. Further, the pair of left and right wall structures shown in FIG. 5 are different in configuration, and the left wall structure in the figure is provided integrally with the ceiling beam 25 and floor beam 26 at the installation positions thereof. The wall structure on the right side is provided separately from the installation positions of the ceiling beam 25 and the floor beam 26. In other words, the installation interval (mounting pitch) of the ceiling beam 25 and the floor beam 26 is about 500 mm, for example, while the width of the boundary wall 40 (that is, the installation interval between the pair of left and right wall structures) is about 250 mm, for example. For this reason, at least one of the pair of left and right wall components is separated from the installation position of the ceiling beam 25 and the floor beam 26 and is provided separately from these beams.

  First, the structure of the first floor ceiling back wall 42 will be described. The first floor ceiling back wall 42 is configured by a field wall panel 110 being installed above the ceiling face material 27A at a height position where the ceiling beam 22A of the first floor portion 12 is installed. Details will be described with reference to FIG. FIG. 8 is a perspective view showing the details of the first floor ceiling back wall 42, (a) shows a state after the wall panel 110 is assembled, (b) shows a single body wall panel 110, (c ) Shows an exploded state of the field wall panel 110.

  As shown in FIGS. 8B and 8C, the wall panel 110 is composed of, for example, a wall surface material 111 formed by stacking two plaster boards, and approximately the same size as the wall surface material 111 (substantially the same vertical and horizontal dimensions). And a plate-like glass wool 113 incorporated into the inside of the frame 112, and these are integrated. The frame body 112 is configured by combining square members made of, for example, a wooden material on four sides. The glass wool 113 is incorporated in the frame body 112 in a state where there is no gap with the inner peripheral surface of the frame body 112 and is in contact with the wall surface material 111. The vertical dimension (height dimension) of the field wall panel 110 is substantially the same as the vertical dimension (web height dimension) of the ceiling beam 22A, and the horizontal dimension (longitudinal dimension) is the ceiling large beam on the short side (wife side). It is substantially the same as the length dimension of 22A. In addition, the wall surface material 111 and the frame 112 are integrated by screwing in a screw, a nail, etc. from the wall surface material 111 side (refer FIG. 5).

  Then, as shown in FIG. 8A, the field wall panel 110 is oriented in a direction orthogonal to the two opposing ceiling girder 22A (ceiling girder girder), that is, in a direction extending in the same direction (parallel) as the ceiling girder 25A. It is attached. Here, a backing material 115 is installed on the upper surface of the ceiling material 27A, and a field wall panel 110 is installed on the backing material 115 (see FIG. 5). The backing material 115 is a base plate material used for fixing the upper end portion (upper base material 81) of the first-floor room boundary wall 41 to the ceiling surface material 27A. The backing material 115 is made of, for example, a particle board, and one side has a length dimension between two facing ceiling beams 22A (ceiling beam beams), and the other side has two adjacent ceiling beams 25A. It has a rectangular plate shape with a length dimension between them. Then, staples, nails, or the like are driven into the frame body 112 of the field wall panel 110, and the field wall panel 110 is fixed by penetrating the staples and nails through the backing material 115 and the ceiling surface material 27A.

  The backing material 115 can be fixed to the ceiling beam 22A or the ceiling beam 25A. The backing material 115 is not limited to a particle board (plywood), but can be applied as long as it is a material suitable for screwing or the like and has a higher load bearing performance than a ceiling surface material.

  When the field wall panel 110 is attached as described above, a gap is formed between the longitudinal end of the field wall panel 110 and the web of the ceiling beam 22A (ceiling girder beam). Therefore, block-shaped rock wool 116 is assembled in this gap. As a result, between the two ceiling beams 22A facing each other, excellent fireproof performance and soundproof performance are ensured in any part of the first floor ceiling back wall 42 and both ends thereof.

  In FIG. 5, among the pair of left and right boundary wall panels 110 constituting the first floor ceiling back wall 42, the right side wall wall panel 110 (the boundary wall panel 110 provided apart from the ceiling beam 25A) in the drawing is described above. The configuration shown in FIG. 8 can be applied as it is. On the other hand, the configuration of the left side wall panel 110 (the wall wall panel 110 provided at the same position as the ceiling beam 25A) is slightly different from that in FIG. That is, the left-hand side wall panel 110 is provided on the ceiling beam 25A, and the vertical dimension (height dimension) of the frame body 112 is reduced by the height of the ceiling beam 25A. Yes. Moreover, the vertical dimension of the wall surface material 111 is larger than the vertical dimension of the frame body 112, and the lower end portion of the wall surface material 111 covers the opening (the groove opening of the lip channel steel) of the ceiling beam 25A. It is in a state. The field wall panel 110 is fixed by driving a screw, a nail, or the like into the frame body 112 of the field wall panel 110 and passing it through the ceiling beam 25A below it. Glass wool 117 is attached to the outside of the web of the ceiling beam 25A, and the ceiling beam 25A is sandwiched between the wall material 111 and the glass wool 117 on both sides in the vertical direction (the groove opening side and the outside of the web), respectively. It is in a state.

  In the unit manufacturing factory, the building unit 20 of the first floor portion 12 has a pair of left and right wall components (wall surface material 83 and the like) constituting the first floor room boundary wall 41 and left and right sides constituting the first floor ceiling back wall 42. A pair of field wall panels 110 are integrally provided.

  Next, the configuration of the second floor lower boundary wall 43 will be described. The second floor lower boundary wall 43 is configured by the boundary wall panel 120 being installed below the floor material 28B at the height position where the floor beam 23B of the second floor portion 13 is installed. 9 will be used for explanation. FIG. 9 is a perspective view showing details of the second floor lower boundary wall 43, (a) shows a state after the assembly of the boundary wall panel 120, (b) shows a single body of the boundary wall panel 120, and (c) shows The disassembled state of the field wall panel 120 is shown.

  As shown in FIGS. 9B and 9C, the wall panel 120 is composed of, for example, a wall surface member 121 formed by stacking two plaster boards, and approximately the same size as the wall surface member 121 (substantially the same vertical and horizontal dimensions). And a plate-like glass wool 123 incorporated in the inside of the frame 122, and these are integrated. The frame body 122 is configured by combining, for example, square members made of a wood-shaped material into four sides, and the upper side square members project in the longitudinal direction from the other parts, so that they are stretched at both ends in the longitudinal direction. A protruding portion 122a is formed. The glass wool 123 is incorporated in the frame body 122 with no gap with the inner peripheral surface of the frame body 122 and in contact with the wall surface material 121. The vertical dimension (height dimension) of the field wall panel 120 is substantially the same as the vertical dimension (web height dimension) of the floor beam 23B. Further, the horizontal dimension (longitudinal dimension) of the field wall panel 120 is substantially the same as the length of the ceiling large beam 22A on the short side (wife side) except for the overhanging portion 122a of the frame body 122. The overhanging portion 122a of the body 122 is larger than the length of the ceiling large beam 22A on the short side (wife side). Note that the wall surface material 121 and the frame body 122 are integrated by driving a screw, a nail, or the like from the wall surface material 121 side (see FIG. 5).

  Then, as shown in FIG. 9A, the field wall panel 120 is oriented in a direction orthogonal to the two opposing floor girder 23B (floor girder girder), that is, in a direction extending in the same direction (parallel) as the floor girder 26B. It is attached. Here, the boundary wall panel 120 is installed in a state where the overhanging portion 122a of the frame body 122 is placed on the flange of the floor girder 23B (floor girder girder). In this case, the overhanging portion 122a functions as a hooking portion, and the overhanging portion 122a is hooked on the floor large beam 23B, so that the field wall panel 120 is supported by being suspended. Specifically, a floor joist 61 is attached on the flange of the floor beam 23B (floor girder beam) along the longitudinal direction as shown in the figure, but the surplus portion where the floor joist 61 is not placed on the end of the flange The overhanging portion 122a is placed on the remaining portion, that is, the field wall panel 120 is installed with the overhanging portion 122a being close to the floor joist 61. The boundary wall panel 120 is fixed by driving staples, nails, or the like into the overhanging portion 122 a of the frame body 122 and the floor joist 61 to connect the frame body 122 to the floor joist 61. A configuration in which the frame body 122 is connected to the floor joist 61 by a locking connection between the frame body 122 and the floor joist 61, in addition to the frame body 122 being connected and fixed to the floor joist 61 by a fixing tool such as a staple or a nail. A configuration in which the frame body 122 is directly connected to the floor beam 23B is also possible.

  Here, it is desirable to provide the floor joist 61 at a position slightly offset from the inside of the unit on the floor girder 23B, so that the room wall panel 120 is naturally provided on the inside of the unit on the floor girder 23B. It is possible to give it. Further, if the height of the boundary wall panel 120 including the overhanging portion 122a (the hooking portion) is set to be equal to or lower than the upper end position of the floor joist 61, it is a hindrance when forming the floor surface of the upper floor. do not become.

  When the field wall panel 120 is attached as described above, a gap is formed between the longitudinal end portion of the field wall panel 120 and the web of the floor beam 23B (floor beam girder). Therefore, block-shaped rock wool 125 is assembled in this gap. Thereby, between the two floor beams 23B facing each other, excellent fireproof performance and soundproof performance are ensured in any part of the second floor lower boundary wall 43 and both ends thereof.

  In FIG. 5, among the pair of left and right wall constituents constituting the second floor lower boundary wall 43, the right side wall constituent (the wall constituent provided away from the floor beam 26B) in FIG. The wall panel 120 can be applied as it is. On the other hand, the structure of the left side wall structure (the wall structure provided at the same position as the floor beam 26B) is different from that of FIG. That is, the left side wall structure in the figure includes a wall material 127 and glass wool 128 provided on both sides of the floor beam 26B and the floor joist 64 thereon. In this case, the vertical dimension of the wall surface material 127 is larger than the vertical dimension of both the floor beam 26B and the floor joist 64, and the lower end portion of the wall material 127 protrudes downward from the floor beam 26B. ing. A plywood 129 is fixed to the lower end portion of the wall material 127 (portion protruding downward from the floor beam 26B) with screws, nails or the like.

  When the second floor unit is installed on the upper part of the first floor unit, a gap is formed between the upper end of the first floor ceiling back wall 42 and the lower end of the second floor lower wall 43, and the gap Rock wool 118 as a filling material is disposed in a compressed state. That is, in the wall structure on the right side of the figure, the rock wool 118 is disposed in the gap between the upper surface of the boundary wall panel 110 of the first floor ceiling back wall 42 and the lower surface of the boundary wall panel 120 of the second floor lower boundary wall 43. In the left side wall structure in the figure, rock wool 118 is disposed in the gap between the upper surface of the field wall panel 110 of the first floor ceiling back wall 42 and the lower surface of the wall material 127 of the second floor lower boundary wall 43. ing. In the natural state, the rock wool 118 has a vertical dimension larger than the gap between the first floor ceiling back wall 42 and the second floor lower wall 43 and has elasticity in at least the vertical direction. When the floor unit is assembled, it is crushed and compressed. The rock wool 118 is a fibrous member having excellent fire resistance, soundproofing, and heat insulation. The rock wool 118 can be attached at the construction site. However, in the unit manufacturing factory, the rock wool 118 is attached to the boundary wall (wall structure) of the building unit 20 on either the upper floor side or the lower floor side. It is desirable to paste in advance.

  The second-floor ceiling back wall 45 has a structure having different wall structures on the left and right in the drawing. The wall structure on the right side of the figure is configured by installing a field wall panel 110 (see FIG. 8 for details) provided as the first floor ceiling back wall 42. The main difference from the first floor ceiling back wall 42 is that the height dimension of the field wall panel 110 is different (the second floor ceiling back wall 45 is smaller in height). As the second floor ceiling back wall 45, a configuration is shown in which a wall panel 110 having the same number as that of the first floor ceiling back wall 42 is assembled. The configuration in which the boundary wall panel 110 is fixed to the backing material 115 for fixing the upper end portion (upper base material 81) of the second-floor room boundary wall 44 to the ceiling surface material 27B is also as described above.

  Further, in the second floor ceiling back wall 45, the left side wall structure (wall structure provided at the same position as the ceiling beam 25B) is sandwiched between the ceiling beam 25B and the field edge 69 below it. A wall material 131 and glass wool 132 provided on both sides are provided. In addition, a base wood 133 is provided on the upper surface of the ceiling beam 25B, and a wall material 131 is fixed to the base wood 133 by screws, nails or the like.

  In the unit manufacturing factory, the building unit 20 of the second floor portion 13 is provided with a pair of left and right wall structures (the right wall panel 120, the left wall material 127, etc. in FIG. 5) constituting the second floor lower boundary wall 43, and A pair of left and right wall components (wall surface material 83 and the like) constituting the second-floor room boundary wall 44 and a pair of left and right wall components (second wall panel 110 on the right side in FIG. 5 and the left side) constituting the second-floor ceiling back wall 45. The wall material 131 and the like are integrally provided.

  The attic wall 46 is composed of a lower wall structure (also referred to as an attic floor lower wall) and an upper wall structure (also referred to as an attic upper wall) across the attic floor material 73. First, the wall structure below the attic floor material 73 will be described.

  The wall structure (attic floor lower boundary wall portion) below the attic floor material 73 has a pair of left and right configurations as described above, and the right side of the figure is a boundary wall panel provided as the second floor lower boundary wall 43. 120 (see FIG. 9 for details) is installed. The main difference from the second floor lower boundary wall 43 is that the height dimension of the boundary wall panel 120 is different (the height dimension of the attic boundary wall 46 is smaller). The structure which assembled | attached the field wall panel 120 which attached | subjected the same number as the 2nd floor underworld wall 43 as an attic floor underworld wall part is shown. In this configuration, the field wall panel 120 is installed in a state where the projecting portion 122a of the frame body 122 is placed on the flange of the ceiling beam 22B (ceiling beam).

  Further, below the attic floor material 73, the left side wall structure (the wall structure provided at the same position as the attic floor beam 72) is provided on both sides of the floor beam 72. Wall surface material 135 and glass wool 136 to be formed. In this configuration, the wall material 135 is fixed to the floor beam 72 by screws, nails or the like.

  The upper wall structure (attic floor upper wall) of the attic floor member 73 is horizontally located between the lower surface of the field board (not shown) and the upper surface of the attic floor material 73 in the roof portion 14, that is, in the attic space. It is divided into a plurality of directions. This has the same configuration as the attic wall 36 of the boundary wall 30 described above, and FIG. 5 shows a configuration with the same member numbers as the attic boundary wall 36 of the boundary wall 30.

  Rock wool 138 is disposed between the second floor ceiling back wall 45 and the attic wall 46 in a compressed state. That is, in the wall structure on the right side of the figure, the rock wool 138 is disposed in the gap between the upper surface of the field wall panel 110 of the second-floor ceiling back wall 45 and the lower surface of the field wall panel 120 of the attic wall 46, In the left wall structure in the figure, rock wool 138 is disposed in a gap between the upper surface of the ceiling beam 25B and the wall material 131 and the lower surface of the floor beam 72 and the wall material 135. The rock wool 138 is larger in the vertical direction than the gap between the second floor ceiling back wall 45 and the attic wall 46 in the natural state (the gap generated in the part when the upper floor unit is placed on the lower floor unit). It has elasticity at least in the vertical direction, and is crushed and compressed when the roof unit constituting the roof portion 14 is assembled on the upper floor unit. Rock wool 138 is a fibrous member having excellent fire resistance, soundproofing, and heat insulating properties. The rock wool 138 can be attached at the construction site, but in the unit manufacturing factory, the rock wool 138 is affixed in advance to the boundary wall (wall structure) of either the upper floor unit or the roof unit. It is desirable.

  Next, the underfloor structure of the building 10 will be described. In the present embodiment, as the underfloor structure, there is provided a blocking unit that blocks the movement of a person under the floor between two adjacent dwelling units and allows the air to flow under the floor between the dwelling units. Details will be described below.

  FIG. 10 is a cross-sectional view showing the configuration of the lower floor portion of the building 10. FIG. 10 is a cross-sectional view below the floor along line X1-X1 in FIG. 2, that is, a cross-sectional view below the portion that crosses the boundary wall 30 provided along the docking line DL (unit boundary line) between the building units 20. . This is a cross-sectional view showing the underfloor structure below the boundary wall 30 shown in FIG.

  As shown in FIG. 10, on the floor material 28A above the two floor beams 23A of the first floor portion 12, as described above, the boundary wall 30 (the boundary wall provided at the same position as the docking line DL of the building unit 20). ) Is provided. In the underfloor space 15 of the building 10, a floor girder 23A is provided so as to protrude downward from the floor surface material 28A. Similarly, in the underfloor space 15, below the two floor beams 23A, that is, directly below the boundary wall 30, along the longitudinal direction of the floor beams 23A of the first floor portion 12, that is, in a direction parallel to the floor beams 23A. In addition, an underfloor partition wall 150 is provided as a blocking portion. The underfloor partition wall 150 is configured as a concrete rising portion protruding upward from the ground.

  Specifically, a quarry layer G1 and a discarded concrete layer G2 are provided in two layers in the upper and lower sides, and an underfloor partition wall 150 is formed on the discarded concrete layer G2. The underfloor partition wall 150 is configured by stacking a plurality of rectangular parallelepiped concrete blocks 151, and the height position of the upper end portion thereof is the same as the upper end portion of the foundation 11. More specifically, the underfloor partition wall 150 is configured by placing concrete in a state in which vertical reinforcing bars as reinforcing materials are arranged in the reinforcing holes of the concrete blocks 151 stacked in plurality.

  In the configuration of FIG. 10, the two large floor beams 23 </ b> A and the underfloor partition wall 150 are provided to be separated from each other, and air flow in the underfloor space 15 is allowed between the large floor beams 23 </ b> A and the underfloor partition wall 150. A clearance CL1 is formed. The gap CL1 is formed so that a person cannot pass therethrough and has an effective gap dimension D1 for underfloor ventilation. Specifically, the clearance dimension D1 may be 9 mm or more for effective ventilation, but in the present embodiment, the clearance dimension D1 is set to about 30 to 100 mm in consideration of workability and wiring / pipe workability.

  In the illustrated configuration, the underfloor partition wall 150 is disposed at the center of the two floor beams 23A, but may be disposed so as to be biased to one of the floor beams 23A. Further, the height position of the upper end portion of the underfloor partition wall 150 may not be the same as the upper end portion of the foundation 11, and may be higher or lower than the upper end portion of the foundation 11. In this case, by increasing the height position of the upper end portion of the underfloor partition wall 150, the large floor beam 23A and the underfloor partition wall 150 are separated by a predetermined gap, and the underfloor partition wall 150 faces the web of the large floor beam 23A. It is good also as composition to do. In short, it is only necessary to form a gap CL1 between the large floor beam 23A and the underfloor partition wall 150, which cannot pass a person and has an effective gap size for underfloor ventilation.

  11 is an underfloor cross-sectional view taken along line X2-X2 in FIG. 2, that is, an underfloor cross section of a portion crossing the boundary wall 40 provided at a position different from the docking line DL (unit boundary line) between the building units 20. FIG. This is a cross-sectional view showing the underfloor structure below the boundary wall 40 shown in FIG.

  As shown in FIG. 11, the boundary wall 40 (the boundary wall provided at a position different from the docking line DL of the building unit 20) is provided on the floor material 28 </ b> A in the first floor portion 12 as described above. In the underfloor space 15 of the building 10, a floor beam 26A is provided so as to protrude downward from the floor surface material 28A. Similarly, in the underfloor space 15, a position just below the boundary wall 40 is below the floor as a blocking portion along the longitudinal direction of the floor beam 26 </ b> A of the first floor portion 12, that is, in a direction parallel to the floor beam 26 </ b> A. A partition wall 155 is provided. Like the underfloor partition wall 150 described above, the underfloor partition wall 155 is configured as a concrete rising portion that protrudes upward from the ground, and is formed on the discarded concrete layer G2. The underfloor partition wall 155 is configured by stacking a plurality of rectangular parallelepiped concrete blocks 156, and the height position of the upper end portion thereof is the same as the upper end portion of the foundation 11. Like the underfloor partition wall 150, the underfloor partition wall 155 is configured by placing concrete in a state in which vertical reinforcing bars as reinforcing materials are disposed in the rebar arrangement holes of the stacked concrete blocks 156.

  In the configuration of FIG. 11, the floor beam 26A and the underfloor partition wall 155 are provided to be separated from each other, and air flow in the underfloor space 15 is allowed between the floor beam 26A and the underfloor partition wall 155. A clearance CL2 is formed. The gap CL2 is formed so that a person cannot pass through and has an effective gap dimension D2 for underfloor ventilation. Specifically, the gap dimension D2 may be 9 mm or more as effective for ventilation, but in this embodiment, the gap dimension D2 is set to about 30 to 100 mm in consideration of workability and wiring / pipe workability.

  In addition, the height position of the upper end part of the underfloor partition wall 155 may not be the same as the upper end part of the foundation 11, and may be higher or lower than the upper end part of the foundation 11. In this case, by increasing the height position of the upper end portion of the underfloor partition wall 155, the floor beam 26A and the underfloor partition wall 155 are separated from each other by a predetermined gap, and the underfloor partition wall 155 is disposed vertically with respect to the floor beam 26A. It is good also as a structure which opposes a side part. In short, it is only necessary to form a gap CL2 between the floor beam 26A and the underfloor partition wall 155 that cannot pass a person and that has an effective gap dimension for underfloor ventilation.

  FIG. 12 is a plan view showing an installation layout of the underfloor partition walls 150 and 155 provided along the boundary walls 30 and 40. FIG. 12 shows a configuration in which four dwelling units A1 to A4 are formed on the same floor by six building units 20 as in FIG. 2 described above, and the underfloor partition wall 150 includes dwelling units A1-A2 and dwelling units A3. -A4 is provided between the dwelling units A1-A3 and between the dwelling units A2-A4.

  As shown in FIG. 12, the underfloor partition wall 150 is provided along the unit boundary on the long side (girder side) of the building unit 20, whereas the underfloor partition wall 155 includes the underfloor partition wall 150 and It is provided at a position away from the unit boundary portion on the short side (wife side) of the building unit 20 in a direction orthogonal (direction in which the longitudinal direction is orthogonal). These are the same as the installation positions of the boundary walls 30 and 40. A plurality of underfloor partition walls 150 and 155 are provided along the boundary walls 30 and 40, respectively, and gaps CL3 are formed between the underfloor partition walls 150 and between the underfloor partition walls 155, respectively. That is, the underfloor partition walls 150 and 155 are configured as a plurality of wall portions that extend along the boundary wall and are installed at predetermined intervals.

  The gap CL3 has a width dimension that allows piping and wiring to pass therethrough and cannot pass through (invade) by humans. For example, the width in the longitudinal direction of the wall is set to about 150 to 200 mm. Yes. Thereby, the underfloor partition walls 150 and 155 are set so as to allow passage of piping and wiring in addition to the circulation of air in the underfloor space 15.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  As the boundary wall 30 provided along the unit docking line DL (unit boundary line), the fact that the ceiling large beam 22 and the floor large beam 23 of the building unit 20 are made of groove steel is used. By accommodating the boundary wall panels 90 and 100, the ceiling back boundary walls 32 and 35 and the underfloor boundary wall 33 were formed. Thereby, not only the wall of the indoor space of each building unit 20 (living room wall) but also the ceiling wall or the wall under the floor can be manufactured in advance at the factory. Moreover, since the ceiling back walls 32 and 35 and the underfloor wall 33 are constructed in the region surrounded by the web and the flange by using the shape of the grooved steel, each of these wall can be accommodated in the large beam. Thus, it is possible to increase the degree of freedom of space without occupying other spaces. As a result, the cost reduction effect can be further promoted.

  Since the boundary wall panels 90 and 100 are separated and accommodated between the adjacent ceiling beam 25 or the floor beam 26 in the groove portions of the ceiling beam 22 and the floor beam 23, the field wall panels 90 and 100 are respectively accommodated. Are installed in a direction across the plurality of ceiling beams 25 or across the floor beams 26, the field wall panels 90, 100 can be preferably installed along the longitudinal direction of the ceiling beams 22 and the floor beams 23. Further, since the rock wool 94, 104 as the gap filling material is provided in the gap portion formed by each of the small beams 25, 26 (divided portion of the boundary wall panel), the ceiling beam 22 and the floor beam 23 in the longitudinal direction are provided. In any part, excellent fireproof performance and soundproof performance are ensured.

  The upper beams 23B of the upper floor unit and the ceiling beams 22A of the lower floor unit are provided close to each other in the vertical direction, and these large beams 23B and 22A are positioned so as to be at the same position in plan view, and Since the ceiling back boundary wall 32 and the floor lower boundary wall 33 are formed at the connecting portion between the upper floor unit and the lower floor unit (see FIG. 4), a series of interfloor boundary walls can be formed in the space between the upper and lower floors. Moreover, since all or most of the inter-story boundary walls can be manufactured at the factory, the man-hour reduction effect at the construction site is increased.

  Since the rock wool 58 as a gap filling material is interposed in the gap generated between the upper end of the lower ceiling beam 22A and the lower edge of the upper floor beam 23B, the floor beam 23B and the ceiling beam 22A Regardless of the positioning accuracy between the floor beams 23B and the ceiling beam 22A, it is possible to improve the series of the interstory walls. That is, it becomes possible to further improve the fireproofing and soundproofing performance of the interstory walls. In addition, by positioning the rock wool 58 on either the upper or lower girder at the factory by bonding or the like, it is possible to contribute to further reduction in the number of man-hours at the site.

  Since the second-floor lower boundary wall 43 is configured by hanging and supporting a part of the boundary wall panel 120 by the floor girder 23B as the boundary wall 40 provided at a position different from the unit docking line DL (unit boundary line). The boundary wall 43 can be easily constructed while being in a state of being intersected (preferably orthogonal) with the floor beam 23B under the floor of the upper floor unit. Here, since the load of the second floor lower boundary wall 43 is supported by the floor girder 23B, sufficient support rigidity for supporting the lower floor wall 43 can be secured, and a member for increasing the support rigidity is not necessary. Therefore, the existing building unit 20 can be used, which is advantageous in terms of manufacturing cost.

  As the fixing means for the second floor lower boundary wall 43, the projecting portion 122a provided on the frame 122 of the boundary wall panel 120 and the floor joist 61 on the floor beam 23B are connected and fixed. Deviation can be suppressed. In this case, since the second floor lower boundary wall 43 is not only hooked on the floor beam 23B but also fixed to the floor joist 61, the second floor lower boundary wall 43 is displaced from the floor beam 23B due to vibration or the like. It can be avoided. Since the floor joists 61 installed on the floor beams 23B are originally necessary members, no new members other than the fixtures are necessary, so that the manufacturing cost does not increase.

  Since the second-floor lower boundary wall 43 is disposed between the floor beams 26B, it is easy to install the boundary wall panel 120 when the boundary wall panel 120 is suspended and supported by the large floor beam 23B. The field wall panel 120 can be installed in a state where the floor beam 26B does not get in the way.

  Further, as the boundary wall 40 provided at a position different from the unit docking line DL (unit boundary line), a backing material 115 for fixing the upper end portions of the living room boundary walls 41 and 44 to the ceiling surface material 27 is used. Since the ceiling wall panel 110 is fixed on the ceiling 115 and the ceiling back wall 42 and 45 are configured, the ceiling back wall 42 and 45 can be easily constructed while also using the ceiling backing material normally used for fixing the living room boundary wall. can do. Here, since the load of the ceiling back wall 42, 45 is supported by the backing material 115, sufficient support rigidity for supporting the ceiling back wall 42, 45 can be secured, and a small beam only for increasing the support rigidity separately. Such a member becomes unnecessary. Therefore, the existing building unit 20 can be used, which is advantageous in terms of manufacturing cost.

  Since the ceiling backside walls 42 and 45 are disposed between the ceiling beams 25, when the field wall panel 110 is fixed on the backing material 115, the simplicity in installing the field wall panel 110 is ensured. However, it becomes possible to install the field wall panel 110 in a state where the ceiling beam 25 does not get in the way.

  The second-floor lower floor wall 43 and the first-floor ceiling back wall 42 are positioned so as to be in the same place in plan view, and the inter-floor boundary is formed at the connecting portion between the upper-floor unit and the lower-floor unit by these respective boundary walls 42, 43. Since the walls are formed (see FIG. 5), a series of inter-story walls can be formed in the space between the upper and lower floors. Further, in the upper floor unit, it is not necessary to extend the second floor lower boundary wall 43 below the upper floor unit, and in the lower floor unit, it is not necessary to extend the first floor ceiling back wall 42 upward from the lower floor unit. Therefore, even if the boundary walls 42 and 43 are provided in the building unit 20 in advance in the factory, it is possible to fit within the height range of the columns in each building unit 20. As a result, there is an advantage that the boundary wall does not get in the way in the manufacturing process and the transport process of the building unit 20.

  Since the rock wool 118 as a gap filling material is interposed in the gap formed between the upper end of the first floor ceiling back wall 42 and the lower end of the second floor lower wall 43, the first floor ceiling back wall 42 and the second floor under floor Regardless of the positioning accuracy with respect to the boundary wall 43, it is possible to improve the sequence of the inter-level boundary wall from the first floor ceiling back boundary wall 42 to the second floor lower boundary wall 43. That is, it becomes possible to further improve the fireproofing and soundproofing performance of the interstory walls. In addition, if the rock wool 118 is positioned on either the upper or lower girder at the factory by bonding or the like, it is possible to contribute to further man-hour reduction at the site.

[Other Embodiments]
The present invention is not limited to the description of the above embodiment, and may be implemented as follows, for example.

  In the above embodiment, the boundary wall 30 provided along the unit docking line DL (unit boundary line) is provided along the long beam material (ceiling girder beam, floor girder beam) on the long side of the building unit 20 However (see FIGS. 2, 6, and 7), this may be changed and provided along the large beams (ceiling gables and floor girder) on the short side of the building unit 20. This is a case where the boundary wall 30 is provided along the docking line DL on the short side of the building unit 20. That is, the field wall panel 90 provided as the ceiling back boundary walls 32 and 35 is accommodated in the in-beam space portions (groove portions of channel steel) of the ceiling large beams 22A and 22B on the short side side. In such a case, the boundary wall panel 90 is provided in a direction parallel to the ceiling beams 25A and 25B. Moreover, the field wall panel 100 provided as the underfloor boundary wall 33 is accommodated in the beam internal space part (groove part of channel steel) of the floor large beam 23B of the short side. In such a case, the field wall panel 100 is provided in a direction parallel to the floor beam 26B. In addition, when a field wall panel is integrally provided on the ceiling side beam or floor beam on the short side, the field wall panel is not divided by the small beam material as shown in FIGS. 6 and 7, and between the two columns. It becomes possible to assemble a continuous monolithic boundary wall panel.

  In the above embodiment, the ceiling beams 22 and floor beams 23 constituting the building unit 20 are all groove steel, but a configuration in which only a portion thereof is groove steel may be adopted. For example, a grooved steel may be used for a portion where the boundary wall 30 (a boundary wall provided along the unit docking line DL) is integrally provided, and a square steel may be used for the other portions.

  In the above embodiment, a building having both the boundary wall 30 (the boundary wall provided along the unit docking line DL) and the boundary wall 40 (the boundary wall provided at a position different from the unit docking line DL) is exemplified. However, it is also possible to realize a building having only the boundary wall 30 as a door boundary wall or a building having only the boundary wall 40 as a door boundary wall.

  In the above embodiment, the present invention is applied to a two-story unit type building, but the present invention is applied to other types of buildings such as a one-story unit type building or a unit type building having three or more floors. Is also possible.

The front view which shows schematic structure of the building in embodiment. The top view which shows the arrangement | sequence of the building unit which comprises a building. The perspective view which shows the structure of a building unit. Sectional drawing which shows the cross-sectional structure of a boundary wall and its peripheral part. Sectional drawing which shows the cross-sectional structure of a boundary wall and its peripheral part. The perspective view which shows the detail of a 1st-floor ceiling back wall. The perspective view which shows the detail of a 2nd floor underworld wall. The perspective view which shows the detail of a 1st-floor ceiling back wall. The perspective view which shows the detail of a 2nd floor underworld wall. Sectional drawing which shows the structure of the lower floor part of a building. Sectional drawing which shows the structure of the lower floor part of a building. The top view which shows the installation layout of the underfloor partition wall provided along a boundary wall.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Building, 20 ... Building unit, 21 ... Column, 22 ... Ceiling girder (ceiling beam), 23 ... Floor girder (floor beam), 25 ... Ceiling girder (ceiling beam), 26 ... Floor girder (floor beam) 27 ... Ceiling surface material, 28 ... Floor surface material, 30 ... Border wall, 32 ... First floor ceiling back wall, 33 ... Second floor floor bottom wall, 35 ... Second floor ceiling back wall, 40 ... Border wall, 42 ... One Floor ceiling back wall, 43 ... Second floor floor bottom wall, 45 ... Second floor ceiling back wall, 51, 61 ... Floor joist, 58 ... Rock wool (gap filling material), 90 ... Field wall panel (field wall component), 91 ... Wall material, 92 ... Glass wool, 100 ... Border wall panel (boundary wall constituent material), 101 ... Wall material, 102 ... Glass wool, 110 ... Border wall panel, 111 ... Wall material, 112 ... Frame, 113 ... Glass wool, 115 ... backing material, 118 ... rock wool (gap filling material), 120 ... boundary wall panel, 12 ... wall material, 122 ... frame, 122a ... projecting portion (hook portion), 123 ... glass wool, Al to A4 ... dwelling.

Claims (7)

The building unit includes a plurality of pillars and a plurality of building units each having a ceiling beam and a floor beam connected to the upper and lower sides thereof, and forms an outer periphery of the building unit among the ceiling beam and the floor beam. The boundary wall structure of the unit type building where the parts to be made are the ceiling beam and floor beam ,
The ceiling girder and the floor girder have a web whose plate surface extends in the vertical direction and a pair of flanges extending laterally from both upper and lower ends of the web, and are surrounded by the web and the flange and opposite to the web. It is composed of channel steel formed with a groove that opens to the side that becomes the side,
In a part of the ceiling girder or floor girder , a field wall panel is accommodated by housing a field wall panel in the groove part of the grooved steel ,
The boundary wall panel has a wall surface material and glass wool, is formed in a panel shape, and is configured by integrating these wall surface material and glass wool,
A plurality of ceiling beams are fixed to the ceiling beam, and a plurality of floor beams are fixed to the floor beam.
A field wall structure of a unit type building , wherein the field wall panels are respectively accommodated between adjacent small beams in the groove portion of the large beam . The said boundary wall panel has the base material assembled | attached to the site | part which notched a part of the said glass wool, It is being fixed to the said big beam via the base material . Unit-type building boundary structure. 3. The unit type according to claim 2, wherein the glass wool is cut out at both ends in the longitudinal direction of the girder, and the base material is assembled to each of the cut-out portions. Building wall structure. 4. The glass wool according to claim 1, wherein the glass wool is formed in a plate shape having substantially the same vertical and horizontal dimensions as the wall surface material, and is superimposed on one surface of the wall surface material . Unit-type building boundary structure. The boundary wall panel is assembled to the girder so that the glass wool faces the web of the girder and a predetermined gap is formed between the glass wool and the web. The boundary wall structure of the unit type building according to any one of claims 1 to 4 . The building units are stacked one above the other, and the upper floor beam formed by the channel steel of the upper floor unit and the lower floor ceiling beam formed by the channel steel of the lower floor unit of the building units are vertically adjacent to each other. The upper floor unit is positioned by the upper floor beam and the lower floor beam so that the upper floor beam and the lower floor ceiling beam are positioned so as to be in the same place in plan view. The boundary wall structure of the unit type building according to any one of claims 1 to 5 , wherein a boundary wall is formed at a connection portion between the unit and the lower floor unit.   When the upper floor unit is installed at the upper part of the lower floor unit, it is set to a size that creates a gap between the upper end of the lower floor beam and the lower end of the upper floor beam. The wall structure of a unit type building according to claim 6, wherein a gap filling material having a large size and elasticity in at least the vertical direction is interposed.

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