JP7201452B2 - building unit - Google Patents

Description

The present invention relates to building units.

Buildings such as houses include those constructed by the unit construction method (unit buildings). A unit building is constructed in a short period of time by transporting building units manufactured in a factory in advance to a construction site and assembling the building units at the construction site. The building units are almost rectangular parallelepipeds, and there are wooden ones and steel frame ones. Among these, wooden building units are configured by combining panels such as floor panels, ceiling panels, and wall panels (see, for example, Patent Document 1).

In Patent Document 1, in a plurality of building units constituting the same floor of a unit building, all the wall panels serving as inner walls are removed, and among the wall panels serving as outer walls (outer wall panels), the outer wall panel located on the opposite side of the building is removed. A long beam is laid between the upper ends of the building to reinforce the space between the outer wall panels.

JP-A-9-32117

However, the structure of the unit building described in Patent Document 1 is suitable for the case where all the building units constituting the same floor are connected to form one large room space (internal space) inside. However, for example, if you want to connect some of the building units that make up the same floor and partition the inside of the connected part into a size different from the unit size, the above structure will be too large. so it wasn't suitable.

Therefore, when connecting part of the building units that make up the same floor and partitioning the inside of the connected part into a size different from the unit size, for example, the boundary between two consecutive building units By removing the inner wall (wall panel) to form an opening, installing a hanging wall on the upper side of this opening, and reinforcing the opening with the hanging wall, the vertical load and horizontal load of the building acting on the opening can be reduced. The load was made to be received by the entire opening surface (as a surface).

However, when constructing a structure that receives the vertical load and horizontal load of the building acting on the opening surface (as a surface), the vertical dimension of the hanging wall must be relatively large. , There is a big hanging wall that sticks out and gets in the way. As a result, the usability of the opening surface and the space connecting the two building units becomes poor, and the appearance of the opening surface portion deteriorates due to the presence of a large hanging wall on the upper side of the opening surface, which stands out.

SUMMARY OF THE INVENTION Accordingly, the main object of the present invention is to solve the problems described above.

In order to solve the above problems, the present invention
A multi-story unit building composed of building units having at least floor panels and wall panels,
At least one side of the building unit of the lower floor is formed with an open surface without wall panels serving as internal walls,
The floor panel constituting the building unit of the upper floor located above the building unit of the lower floor uses a reinforcing floor beam at a position directly above the opening surface,
Both ends of the reinforcing floor beams are supported by vertical members provided in-plane along the sides of the opening, and the vertical load acting on the opening is absorbed by the reinforcing floor beams and the vertical members. let me accept ,
installing a hanging wall above the opening face, positioned below the reinforcing floor beam and interposed between the inner portions of the upper ends of the vertical members;
A position near the hanging wall at the top of the vertical member and the top of the vertical member adjacent to the vertical member of the wall panel that will be the load-bearing wall of another building unit on the lower floor adjacent to the building unit on the lower floor. and are connected in the plane direction and the lateral direction of the hanging wall and the load-bearing wall so that the horizontal load of the building acting on the opening surface is received by the hanging wall. .

According to the present invention, the above configuration enables the vertical load of the building acting on the opening surface to be received by the reinforcing floor beams and the vertical members. In addition, it is possible to make the hanging wall receive the horizontal load acting on the opening face via the upper part of the vertical member connected to the load-bearing wall. As a result, the size of the hanging wall can be reduced in the vertical direction Z, and the hanging wall can be installed inconspicuously on the opening surface. To improve the usability of an opening provided in a building unit and improve the appearance of the opening .

FIG. 2 is a vertical cross-sectional view of the unit building according to the present embodiment cut at a position where an opening surface is provided; FIG. 2 is an enlarged view of the opening surface portion of FIG. 1, showing a state in which a reinforcing floor beam and vertical members receive a vertical load; FIG. 10 is a partially enlarged perspective view of the unit building showing the state of the reinforcing floor beams on the upper floor and hanging walls on the lower floor. It is the side view which looked at FIG. 3 from the end surface side of the reinforcement floor beam. FIG. 2 is a plan view showing a state in which the opening surface of FIG. 1 is formed between consecutive building units; It is a partial enlarged view of the upper part and the periphery of the opening surface showing a state in which the reinforcing plate is attached. FIG. 4 is a view of the opening face and adjacent load-bearing walls showing a horizontal load applied; Figure 2 is an enlarged view of the top of the aperture of Figure 1 showing small hanging walls provided in the aperture; It is the figure which looked at FIG. 6 from the arrow A direction. It is a perspective view which shows the state which attaches a girder wall to the opening surface of FIG. 6 (vertical member provided in). FIG. 6 is a plan view of a continuous building unit similar to FIG. 5 according to a comparative example; FIG. 2 is a longitudinal sectional view similar to FIG. 1 of a unit building according to a comparative example; FIG. 9 is an enlarged view of the upper portion of the opening surface similar to FIG. 8 showing large hanging walls provided in the opening surface according to the comparative example; FIG. 5 is a side view similar to FIG. 4 showing a reinforcing floor beam according to a comparative example viewed from the end face side; FIG. 3 is an enlarged view of an opening surface similar to FIG. 2 showing a state in which a hanging wall and a lintel receiver according to a comparative example receive a vertical load;

Hereinafter, this embodiment will be described in detail with reference to the drawings.
1 to 15 are for explaining this embodiment.

<Construction> The construction will be described below.

As shown in FIG. 1, a building such as a house is composed of a unit building 1. As shown in FIG. A unit building 1 is constructed in a short period of time by transporting substantially rectangular building units 2 and 3 manufactured in advance at a factory to a construction site and assembling the building units 2 and 3 at the construction site. It is designed to be obtained. The building units 2 and 3 include wooden units and steel frame units. The rectangular parallelepiped building units 2 and 3 have a gable side on the short side and a girder side on the long side. The directions in the drawing are the gable direction X, the girder direction Y, and the vertical direction Z. FIG.

In this embodiment, building units 2 and 3 are made of wood. The wooden building units 2 and 3 are constructed by combining panels such as a floor panel 4, a ceiling panel 5, and wall panels 6 and 7. - 特許庁The wall panels 6 and 7 include an inner wall panel (wall panel 6) serving as an inner wall and an outer wall panel (wall panel 7) serving as an outer wall. Further, the inner wall panel and the outer wall panel include those on the gable side (girder panel) and those on the girder side (girder panel), and the girder panel and the girder panel are different in size.

Then, the unit building 1 is configured to have a plurality of stories of two or more stories. In this case, the lower floor is composed of a plurality of building units 2, and the upper floor is composed of a plurality of building units 3. On top of the building body composed of the building unit 2 on the lower floor and the building unit 3 on the upper floor, if necessary, a roof unit 8, a roof structure, etc. can be appropriately provided to form a roof. In addition, in the case of the unit building 1 having three or more floors, the upper and lower floors are relative.

In contrast to the above configuration, the unit building 1 of this embodiment has the following configuration.

(1) At least one building unit 2 on the lower floor (lower floor building unit) for a multi-story unit building 1 composed of building units 2, 3 having at least a floor panel 4 and wall panels 6, 7 In one (building unit 2a), an opening surface 11 without wall panels 6 serving as inner walls is formed.
Then, with respect to the floor panel 4 constituting the upper floor building unit 3 (upper floor building unit 3a) located above the lower floor building unit 2 (building unit 2a), it is positioned directly above the opening surface 11. A reinforcing floor beam 12 is installed.
As shown in FIG. 2, both ends of the reinforcing floor beam 12 are supported by vertical members 13 provided along the sides of the opening 11, and the vertical load P (of the building) acting on the opening 11 is Reinforced floor beams 12 and vertical members 13 are used to receive the load. Alternatively, the vertical load P (of the building) acting on the reinforcing floor beams 12 is directly received by the vertical members 13 .

Here, as shown in FIG. 3 (FIG. 4), the floor panel 4 includes at least a floor frame portion formed by assembling a plurality of floor beams 4a into a rectangular shape, and a floor surface member 4b attached to the upper surface of the floor frame portion. Consists of Inside the floor frame, floor joists and the like can be appropriately provided with a required interval. The floor girders 4a are composed of rectangular timbers arranged vertically (longitudinally in section) so as to increase the strength in the vertical direction Z. As shown in FIG.

The wall panels 6 and 7 are composed of at least a wall frame portion in which a vertical beam 6a and a horizontal beam 6b (see FIG. 6 if necessary) are assembled in a rectangular shape, and a wall surface material attached to the wall frame portion. Inside the wall frame, studs and the like can be appropriately provided at required intervals.

The building units 2 , 3 can additionally comprise ceiling panels 5 . The ceiling panel 5 is composed of at least a ceiling frame formed by assembling a plurality of ceiling beams 5a into a rectangular shape, and a ceiling panel 5b attached to the lower surface of the ceiling frame.

The building unit 2 on the lower floor provides an opening surface 11 inside the building by not installing a wall panel 6 serving as an inner wall on at least one side surface. For the other sides, wall panels 6, 7 can be provided as appropriate.

For example, as shown in FIG. 5, the opening surface 11 is provided when connecting two adjacent building units 2a and 2b to form a space 9 straddling the boundary between the building units 2a and 2b. However, the purpose of providing the opening surface 11 is not limited to the above.

The opening surface 11 is formed, for example, by eliminating the wall panel 6 (end wall) positioned between two building units 2a and 2b that are continuous in the girder direction Y (long side direction) and serving as a boundary wall. Alternatively, the opening surface 11 can be formed by eliminating the wall panel 6 (girder wall) positioned between two building units 2a and 2b adjacent in the gable direction X (short side direction) and serving as a boundary wall. can. In this embodiment, the wall panel 6 on which the opening surface 11 is provided is explained as a gable wall. An opening surface 11 is formed in each part where the two building units 2a and 2b are connected. Then, the structure of this embodiment is applied to each opening surface 11 respectively.

Although the case of the opening surface 11 of the building unit 2a will be described below, the opening surface 11 of the building unit 2b has the same structure. In this embodiment, a washroom space 9 is provided in a portion where the two building units 2a and 2b are connected so as to straddle both the building units 2a and 2b.

In a multi-story unit building 1, as shown in FIG. 1, the building unit 2 on the lower floor and the building unit 3 on the upper floor are aligned in the gable direction X and the girder direction Y with each other in the vertical direction Z. It is generally installed in

The reinforcing floor beams 12 are provided in the vertical direction of at least a part or all of the floor beams 4a constituting the floor panels 4 of the building unit 3 (upper floor unit 3a) located on the upper floor of the building unit 2a in which the opening surface 11 is provided. The Z strength is relatively higher than the existing ones (high-strength floor beams). The reinforcing floor beam 12 has the strength in the vertical direction Z necessary to receive the vertical load P (of the building) acting on the opening surface 11 . The reinforcing floor beams 12 may be provided at least on the floor beams 4a located directly above the opening surface 11 in the floor panel 4, and the other floor beams 4a can be of ordinary strength. .

The reinforcing floor beams 12 may be made of a material having a higher strength than the normal floor beams 4a, or the floor beams 4a may be reinforced with reinforcing members or the like, or the structure of the floor panel 4 as a whole may be changed. All or part of the floor beams 4a may be increased in strength by using a combination of the above. In this embodiment, as shown in FIG. 3 (FIG. 4), laminated lumber having a higher strength than ordinary floor beams 4a (for example, 2×4 lumber) is used, and the laminated lumber is multiplied for reinforcement. It is made into the floor beam 12. A reinforcing member 4 c or the like extending along the reinforcing floor beam 12 may be provided on the lower surface side of the reinforcing floor beam 12 .

Vertical members 13 are provided inside the opening surface 11 to support the reinforcing floor beams 12 from below. The vertical member 13 has a length approximately equal to the height of the building unit 2. - 特許庁A pair of vertical members 13 are provided at positions on both sides of the opening surface 11 . The vertical member 13 is composed of a member having strength necessary to receive the vertical load P from the reinforcing floor beam 12 . The vertical members 13 are installed vertically so that their upper ends directly contact the lower surfaces of both ends of the reinforcing floor beams 12, or indirectly support the lower surfaces of both ends of the reinforcing floor beams 12 from below. be done.

In this embodiment, the vertical member 13 can be constructed of a laminated material having a higher strength than normal vertical members (for example, 2×4 members) so as to increase the strength in the vertical direction Z (reinforced vertical member). timber or high-strength longitudinal timber). Also, the longitudinal member 13 may be of a multi-layered structure in order to increase its strength. In particular, it is preferable that the vertical members 13 are made by multiplying members having high strength.

The vertical load P is the downward load of the building acting on the opening surface 11 of the building unit 2a on the lower floor.

In the case of the existing unit building 1, the portion corresponding to the opening surface 11 has a structure as shown in the comparative examples of FIGS. 11 to 15. FIG. The structure of the comparative example will be described later.

(2) As shown in FIG. 2, a hanging wall 21 is installed above the opening surface 11, positioned below the reinforcing floor beam 12 and interposed between the upper ends of the vertical members 13. As shown in FIG.
As shown in FIG. 6, the position near the hanging wall 21 at the top of the vertical member 13 and another lower floor adjacent to the lower floor building unit 2 (where the opening surface 11 is formed) (building unit 2a). Between the vertical member 13 of the wall panel 6 that becomes the load-bearing wall 22 of the building unit 2 (adjacent building unit 2c) and the upper part of the adjacent vertical beam 6a, in the plane direction of the hanging wall 21 and the load-bearing wall 22 and in the horizontal direction (In this embodiment, the gable direction X), as shown in FIG. 7, the horizontal load Q of the building acting on the opening surface 11 (from another building unit 2 (adjacent building unit 2c) on the lower floor) may be received by the hanging wall 21.

Here, the upper part of the opening surface 11 is the uppermost part of the building unit 2 (building unit 2a) on the lower floor. The lower side of the reinforcing floor beam 12 is a position almost immediately below the reinforcing floor beam 12 . The hanging wall 21 is installed substantially parallel to the reinforcing floor beam 12 . The hanging wall 21 may be installed so as to contact the reinforcing floor beam 12, or may be installed with a slight gap in the vertical direction Z via a spacer (not shown) or the like so as not to contact the reinforcing floor beam 12. You can

Between the upper ends of the vertical members 13 is between inner portions of a pair of vertical members 13 at or near the upper ends of the vertical members 13 .

The intervening is that between the inner portions of the upper ends of the pair of longitudinal members 13, the hanging wall 21 is present in a laterally extending state. Both ends of the hanging wall 21 are extended until they reach the pair of longitudinal members 13 .

The hanging wall 21 is a wall (short in the vertical direction) provided above the opening surface 11 and having a size that does not reach the floor (floor panel 4 below the opening surface 11). The hanging wall 21 is usually called a hanging wall 21 or a hanging wall because it has a shape that hangs down from a ceiling or the like. In this embodiment, as shown in FIG. 8, the hanging wall 21 is sized such that its lower side is substantially flush with the lower surface of the ceiling panel 5 (ceiling panel 5b) on the lower floor, and the hanging wall 21 hangs from the ceiling or the like. I try not to go down. That is, the hanging wall 21 is downsized in the vertical direction Z by making the vertical dimension of the hanging wall 21 substantially the same as the thickness of the ceiling panel 5 of the lower floor. As a result, the hanging wall 21 becomes an auxiliary wall outside the original definition of a hanging wall, but will be described as a hanging wall.

Hanging wall 21 has a frame portion having at least an upper frame 21a and a lower frame 21b. A vertical member 21c is provided inside the frame. The hanging wall 21 may have a vertical frame between both sides of the upper frame 21a and the lower frame 21b, but in this embodiment, the vertical frame is omitted by using the vertical member 13 as the vertical frame. are doing. The frame portion of the hanging wall 21 may be covered with a face material on one side or both sides.

In this case, the upper frame 21a is composed of a square bar extending substantially horizontally with a length covering substantially the entire width of the opening surface 11 . Both ends of the upper frame 21a may be locked and held from below by the upper end surface of the vertical member 13, or may be substantially abutted against the inner surface of the upper end portion of the vertical member 13. . The rectangular timbers forming the upper frame 21a are arranged in a lateral direction (horizontally long cross-section) so that the height in the vertical direction Z is low (FIG. 3).

The lower frame 21b is composed of a square member extending substantially horizontally with a length that substantially contacts the inner surface of the vertical member 13 in the vicinity of the upper end thereof. The rectangular timbers forming the lower frame 21b are arranged in a lateral direction (horizontally long cross-section) so that the height in the vertical direction Z is low (FIG. 3).

The vertical member 21c is a gap holding member for holding the vertical gap between the upper frame 21a and the lower frame 21b. have multiple intervening The upper and lower ends of the vertical member 21c are substantially in contact with the lower surface of the upper frame 21a and the upper surface of the lower frame 21b. The vertical dimension of the hanging wall 21 is substantially set by the vertical dimension of the upper frame 21a and the lower frame 21b and the length in the vertical direction Z of the vertical member 21c.

In order for the horizontal load Q (FIG. 7) of the building acting on the opening surface 11 to be received by the entire surface of the opening surface 11 (as a surface), the hanging wall 21 (a range that can be called a hanging wall 21 It is preferable to make the vertical dimension as large as possible. On the other hand, in this embodiment, the vertical dimension of the hanging wall 21 is reduced to the extent that the horizontal load Q of the building cannot be received by the opening surface 11 as a surface.

That is, the reinforcing floor beams 12 installed on the floor panels 4 of the building unit 3 (upper building unit 3a) on the upper floor are configured to have the strength necessary to receive the vertical load P, so that the hanging wall 21 can be Since the function of receiving the vertical load P is released, the strength of the hanging wall 21 against the vertical load P can be reduced, and the vertical dimension of the hanging wall 21 can be shortened accordingly. Then, the hanging wall 21 loses the function of receiving the horizontal load Q of the building over the entire surface of the opening surface 11 (as a surface).

Therefore, the hanging wall 21 is constructed so as to have the lateral (or substantially horizontal) strength necessary for the hanging wall 21 alone to receive the horizontal load Q (FIG. 7) of the building acting on the opening surface 11. It is The hanging wall 21 can have the lateral strength necessary for the hanging wall 21 alone to receive the horizontal load Q by increasing the strength in the longitudinal direction of at least one of the upper frame 21a and the lower frame 21b or both. can. The upper frame 21a and the lower frame 21b, like the reinforcing floor beams 12 and the vertical members 13, have relatively higher strength in the horizontal direction than the existing ones, multiple members, or a combination of these members to increase the longitudinal strength. Directional strength can be increased.

The position in the vicinity of the hanging wall 21 means a position that is substantially the same as the hanging wall 21 in the vertical direction Z or a position that is slightly lower than the hanging wall 21 . As shown in FIG. 6, it is preferable that the connecting portion be positioned above the vertical member 13 close to the hanging wall 21 within a range that does not hinder the connection work with the load-bearing wall 22 . Specifically, the connecting portion is provided at a position slightly lower than the lower frame 21 b of the hanging wall 21 . A spacer 24 may be interposed between the load-bearing wall 22 and the longitudinal member 13, if necessary.

The wall panel 6 that serves as the load-bearing wall 22 is the wall panel 6 of the adjacent building unit 2c located in the same plane as the opening plane 11. As shown in FIG.

Another building unit 2 on the adjacent lower floor is the building unit 2 adjacent in the gable direction X (adjacent building unit 2c) in this embodiment. In FIG. 1, since the building unit 2a on the lower floor where the opening surface 11 is provided is located on one end side (rightmost side) (in the gable direction X) of the unit building 1, the adjacent building unit 2c is located on the other end side. However, if the building unit 2a provided with the opening surface 11 is located in the middle part of the unit building 1 in the gable direction X, as shown in FIG. , the adjacent building unit 2c is installed. In this case, the adjacent building units 2c on both sides and the upper part of the opening surface 11 are similarly connected.

The horizontal load Q is, for example, a lateral load (wind load) that acts on the building (the building unit 2 on the lower floor of the building, etc.) due to wind or the like.

As shown in FIG. 6, it is preferable to use connectors or fasteners such as connecting bolts 25 and nuts for the connecting portions between the building units 2 . The connection bolt 25 has a length that allows it to penetrate between the vertical members 13 of the opening surface 11 and the vertical bars 6a of the load-bearing walls 22 (and the spacers 24), and has the strength and thickness necessary to receive the horizontal load Q. assumed. A single connecting bolt 25 may be used, but it is preferable to install a plurality of connecting bolts 25 at intervals in the vertical direction Z. In this embodiment, two connecting bolts 25 are provided, but three or more connecting bolts 25 may be provided.

(3) As shown in FIG. 6, a reinforcing plate 31 may be attached to the corner portion between the end of the hanging wall 21 and the upper portion of the vertical member 13 .

Here, the reinforcing plate 31 is for preventing or restricting the deformation of the opening surface 11 due to the angular change of the corner portion. The reinforcement plate 31 includes a horizontal portion 32 having a width (vertical dimension) substantially equal to the interval between the upper frame 21a and the lower frame 21b that constitute the hanging wall 21, and a horizontal portion 32 extending from the outer end of the horizontal portion 32 to the opening surface 11. It can be an L-shaped plate (corner stiffener) of the required thickness made of metal with a vertical portion 33 extending downward along the longitudinal member 13 . The horizontal portion 32 connects the upper frame 21a and the lower frame 21b in the vertical direction Z by fixing the upper and lower edges to both the upper frame 21a and the lower frame 21b with fasteners such as nails and screws. It is preferable to integrate Also, the horizontal portion 32 may be fixed to the vertical member 21c. The vertical portion 33 preferably extends downward to reach or exceed the connection between the hanging wall 21 and the load-bearing wall 22 . In this embodiment, the vertical portion 33 extends at least to a point between two connecting bolts 25 or more. The vertical portion 33 is preferably formed with a width dimension substantially equal to the width dimension of the longitudinal member 13 . Both sides of the vertical portion 33 are preferably fixed to both sides of the longitudinal member 13 by fasteners such as screws.

The reinforcing plate 31 can be provided on one side or both sides of the hanging wall 21 (FIG. 9). Further, as shown in FIG. 10, the vertical portion 33 of the reinforcing plate 31 is finally formed by installing the wall panel 6 (girder wall 6A) orthogonal to the opening surface 11 in the building unit 2a. , so it is not exposed to the outside. Therefore, the length of the vertical portion 33 in the vertical direction Z can be arbitrarily set within a range in which the required strength can be obtained.

<Action> The action of this embodiment will be described below.

First, as shown in the comparative example of FIG. 11, when two adjacent building units 2a and 2b can be used independently for each unit, as shown in FIG. There is no particular need to connect 2a and 2b. In FIG. 5, one building unit 2b is smaller than the building unit 2b of the comparative example in FIG. There is a need to form a space 9 across the boundary.

When two building units 2 constituting the same floor are connected and partitioned into sizes different from the unit size for use, an opening surface 11 is provided at the boundary between the two building units 2a and 2b to be connected. make it

At this time, in the case of the existing unit building 1 shown as a comparative example in FIG. 12, as shown in FIG. A hanging wall 42 (upper frame 41a, lower frame 41b, vertical member 41c) is provided, and both lower ends of the hanging wall 42 are supported from below by lintel receivers 43 positioned inside the normal vertical member 41. I had a structure to do. For this reason, the vertical member 41 can be configured not to have the strength necessary to receive the vertical load P (of the building) acting on the opening surface 11 .

Further, as shown in FIG. 14, the floor beam 4a of the floor panel 4 of the building unit 3 on the upper floor located directly above the opening surface 11 has normal strength (that is, acts on the opening surface 11 (building beams 4a). 2) does not have the strength necessary to receive the vertical load P).

In the building unit 2 on the lower floor, as shown in FIG. 15, the vertical load P of the building acting on the opening surface 11 is received by the hanging wall 42 and the lintel support 43 positioned below the hanging wall 42. I was doing Further, the horizontal load acting on the opening surface 11 by the adjacent building unit 2 is made to be received by the entire surface of the opening surface 11 (as a surface) by enlarging the hanging wall 42 .

Therefore, the hanging wall 42 is required to have strength against both the vertical load P and the horizontal load, and the vertical dimension of the hanging wall 42 has to be increased accordingly. Therefore, a hanging wall 42 with a large vertical dimension protrudes downward from the ceiling surface above the opening surface 11 and becomes an obstacle. Therefore, the usability of the opening surface 11 and the space 9 connected by the opening surface 11 is deteriorated, and the appearance of the opening surface 11 portion is also deteriorated due to the conspicuous large hanging wall 42 on the opening surface 11.例文帳に追加

Therefore, it is desired to improve the usability of the opening surfaces 11 provided in the building units 2a and 2b and the space 9 connected by the opening surfaces 11 by making the opening surfaces 11 neat.

<Effects> According to this embodiment, the following effects can be obtained.

(Effect 1) A reinforcing floor beam 12 (which has relatively higher strength in the vertical direction Z than the existing floor beam 4a) is provided on the floor panel 4 of the upper floor building unit 3 (upper floor building unit 3a), This reinforcing floor beam 12 is placed directly above the opening surface 11 formed at the position of at least one wall panel 6 of the building unit 2 (building unit 2a) on the lower floor. Both ends of the reinforcing floor beam 12 are supported from below by vertical members 13 provided along the sides of the opening surface 11 .

As a result, the vertical load P of the building acting on the opening surface 11 can be received by the reinforcing floor beams 12 and the vertical members 13 . Alternatively, the vertical load P of the building acting on the opening surface 11 can be transmitted from the reinforcing floor beams 12 to the vertical members 13 and made to be received by the vertical members 13 . The vertical load P transmitted to the vertical member 13 of the lower floor is finally transmitted to the foundation of the building.

Therefore, the hanging wall 21 provided on the opening surface 11 does not need strength to receive the vertical load P, so that the hanging wall 21 can be made smaller in the vertical direction Z by that amount.

By miniaturizing the hanging wall 21 in the vertical direction Z (shortening the vertical dimension), the hanging wall 21 can be installed inconspicuously on the opening surface 11 . Therefore, for example, when part of the building units 2 and 3 are connected and the connected part is partitioned into sizes different from the unit size, the space (space 9) connected by the opening surface 11 or the opening The usability of the surface 11 can be improved and the appearance of the opening surface 11 can be improved. In addition, by solving the problem of usability and appearance of the opening surface 11, it becomes possible to make more effective use of the structure that creates a wide space 9 by connecting parts of the building units 2 and 3. . Then, without changing the structure of the entire unit building 1 on a large scale, only by partially changing the structure of the building units 2 and 3 (the upper floor building unit 3a and the lower floor building unit 2a having the opening surface 11), Since the vertical dimension of the hanging wall 21 can be reduced, it is structurally easy.

(Effect 2) The upper part of the vertical member 13 provided along the side of the opening surface 11 (approximately at the position of the hanging wall 21) and the load-bearing wall of another building unit 2 (adjacent building unit 2c) on the adjacent lower floor The upper part of the vertical beam 6a of the wall panel 6, which becomes 22, is connected (in the plane direction and the horizontal direction of the hanging wall 21 and the load-bearing wall 22).

As a result, the horizontal load Q acting on the opening surface 11 from another building unit 2 on the lower floor (the load-bearing wall 22 adjacent to the opening surface 11 of the load-bearing wall 22) is transferred through the upper part of the vertical member 13 connected to the load-bearing wall 22. can be received by the hanging wall 21. The horizontal load Q received by the hanging wall 21 is , to (the bearing wall 22 of) the further building unit 2, etc., and finally to the foundation. Therefore, the opening surface 11 has a structure in which the horizontal load Q is not received by the surface but by the hanging wall 21 (which is shortened in vertical dimension). By shortening the vertical dimension of the hanging wall 21, the vertical dimension of the hanging wall 21 can be reduced. As a result, the vertical dimension of the hanging wall 21 can be reduced or shortened to, for example, the same size as the ceiling surface.

(Effect 3) A reinforcing plate 31 (corner reinforcing fitting) is attached to the corner portion between the end portion of the hanging wall 21 and the upper portion of the vertical member 13 .

As a result, the corner portions of the hanging wall 21 and the vertical members 13 are firmly connected and fixed by the reinforcing plates 31, and deformation of the opening surface 11 due to changes in the angles of the corner portions can be prevented or restricted. Therefore, even if the vertical dimension of the hanging wall 21 is shortened, the opening surface 11 can have strength as a surface. In addition, the reinforcement plate 31 can increase the strength of the connecting portion (or the corner portion) between the hanging wall 21 and the longitudinal member 13 and the strength of at least the periphery of the end portion of the hanging wall 21 itself. Therefore, even with a small hanging wall 21 with a short vertical dimension, the horizontal load Q acting on the opening surface 11 from another building unit 2 on the lower floor, etc., is absorbed by the hanging wall 21 and the vertical member 13 on the opposite side. can be effectively received.

1 Unit building 2 Building unit 2a Building unit 2b Building unit 2c Adjacent building unit 3 Building unit 3a Upper floor unit 4 Floor panel 6 Wall panel 6a Vertical beam 7 Wall panel 8 Roof unit 11 Opening surface 12 Reinforcing floor beam 13 Vertical member 21 Hanging wall 22 Bearing wall 31 Reinforcing plate P Vertical load Q Horizontal load

Claims (2)

A multi-story unit building composed of building units having at least floor panels and wall panels,
At least one side of the building unit of the lower floor is formed with an open surface without wall panels serving as internal walls,
The floor panel constituting the building unit of the upper floor located above the building unit of the lower floor uses a reinforcing floor beam at a position directly above the opening surface,
Both ends of the reinforcing floor beams are supported by vertical members provided in-plane along the sides of the opening, and the vertical load acting on the opening is absorbed by the reinforcing floor beams and the vertical members. let me accept ,
installing a hanging wall above the opening face, positioned below the reinforcing floor beam and interposed between the inner portions of the upper ends of the vertical members;
A position near the hanging wall at the top of the vertical member and the top of the vertical member adjacent to the vertical member of the wall panel that will be the load-bearing wall of another building unit on the lower floor adjacent to the building unit on the lower floor. and are connected in the plane direction and the lateral direction of the hanging wall and the load-bearing wall so that the horizontal load of the building acting on the opening surface is received by the hanging wall. unit building. The unit building according to claim 1 ,
A unit building, characterized in that a reinforcing plate is attached to a corner portion between an end portion of the hanging wall and an upper portion of the vertical member.

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