JP5431245B2 - Unit building - Google Patents

Description

  The present invention relates to a unit building in which a corner is formed by a plurality of units.

  In Patent Document 1, a plurality of building units are arranged so that the installation direction of the long-side beam is orthogonal, and a gate-shaped reinforcing body is installed between adjacent building units, and a column of one building unit is arranged. Excluded unit buildings are disclosed.

JP 2007-247157 A

  However, in the unit building of Patent Document 1, a gate-shaped reinforcing body is attached so as to be sandwiched between a plurality of building units, so this reinforcing body cannot be applied to the corner of the corner, and the column of the corner of the corner is omitted. I can't.

  In view of the above facts, the present invention has an object to obtain a unit building in which a continuous opening without a pillar can be installed in a corner.

  The unit building according to the invention of claim 1 has a plurality of building units including a first building unit and a second building unit each including a column, a girder, and a girder. In a unit building in which a corner portion is formed by a girder beam and a girder beam of the second building unit that is disposed adjacent to the first building unit, the second building unit includes the corner portion. The column located in the first corner of the first building unit is removed, and the beam at the corner of the first building unit is subjected to the horizontal force received from the joint portion at the location excluding the column of the second building unit. Reinforcing means for reinforcing the two building units is provided.

  In the unit building according to the first aspect of the present invention, it is provided in the girder of the first building unit at the corner formed by the girder of the first building unit and the end beam of the second building unit. Since the reinforcing means reinforces the second building unit against the horizontal force received from the joint located at the corner of the second building unit, the column of the second building unit at the joint is removed. be able to. Thereby, in a unit building, the continuous opening without a pillar can be installed in a corner.

  The unit building according to the invention of claim 2 is characterized in that the reinforcing means is a connecting means for connecting the beam of the first building unit and the joint portion of the second building unit, and the second building. And a reinforcing beam spanned between the girder beams of the first building unit along the spanning direction of the span beam passing through the corner of the unit.

  In the unit building according to the invention of claim 2, the load (horizontal force) acting on the joint portion excluding the column of the second building unit is distributed to another beam and column in the second building unit. And also distributed to the beam of the first building unit via the connecting means. And in the 1st building unit, the load which acted on the 1st building unit from the 2nd building unit is distributed not only to the girder beam of the 1st building unit but to the reinforcement beam. Thereby, the intensity | strength of the joint part except the pillar of the 2nd building unit can be raised.

  The unit building according to the invention of claim 3 is installed such that the first building unit and the second building unit are separated from each other by a predetermined distance or more, and the connection means is the joint of the second building unit. It is a beam member erected between the section and the girder beam of the first building unit.

  In the unit building according to the invention of claim 3, even if the first building unit and the second building unit are installed apart from each other by a predetermined distance or more, the so-called remote unit can be separated from the second building unit. Since the load is distributed to the one building unit through the beam member, the strength of the joint portion excluding the pillar of the second building unit can be increased and a continuous opening can be installed in the corner.

  In the unit building according to the invention of claim 4, the beam member has a larger cross-sectional area in a direction perpendicular to the installation direction than the end beam passing through the corner of the second building unit.

  In the unit building according to the invention of claim 4, since the strength of the beam member is increased, it is possible to increase the strength of the joint part excluding the pillar of the second building unit and install a continuous opening in the corner. it can.

  In the unit building according to the invention of claim 5, an opening that communicates the inside of the first building unit and the inside of the second building unit is provided at the corner.

  In the unit building according to the invention of claim 5, since the space between the interior of the first building unit and the interior of the second building unit is continuous by the opening, compared to the configuration in which the column is provided in the joint. A large continuous space including the corners can be formed.

  As described above, the unit building according to the first aspect of the present invention has an excellent effect that it is possible to install a continuous opening without a pillar in the corner.

  According to the unit building according to the second aspect of the present invention, there is an excellent effect that the strength of the joint portion excluding the pillar of the second building unit can be increased.

  According to the unit building according to the third aspect of the present invention, it is possible to increase the strength of the joint portion excluding the pillar of the second building unit and to install a continuous opening at the corner.

  According to the unit building of the present invention as set forth in claim 4, it is possible to increase the strength of the joint part excluding the pillar of the second building unit and to install a continuous opening at the corner.

  According to the unit building according to the fifth aspect of the present invention, one continuous large space including the corner portion can be formed as compared with the configuration in which the column is provided in the joint portion.

It is a perspective view which shows the external appearance of the unit building which concerns on 1st Embodiment. It is a perspective view which shows the internal structure of the unit building which concerns on 1st Embodiment. It is a top view which shows the internal structure of the unit building which concerns on 1st Embodiment. It is a perspective view which shows the structure of the corner of the unit building which concerns on 1st Embodiment. It is a plane sectional view showing a joined part of a unit building concerning a 1st embodiment. It is a perspective view which shows the external appearance of the unit building which concerns on 2nd Embodiment. It is a perspective view which shows the internal structure of the unit building which concerns on 2nd Embodiment. It is a top view which shows the internal structure of the unit building which concerns on 2nd Embodiment. It is a perspective view which shows the structure of the corner of the unit building which concerns on 2nd Embodiment. It is a perspective view which shows the structure as another Example of the corner of the unit building which concerns on 2nd Embodiment. It is a top view which shows the structure of the entrance corner vicinity of the unit building which concerns on 2nd Embodiment. (A), (B) It is the longitudinal cross-sectional view which compared the cross section of the perpendicular direction of the end beam and beam member of the unit building which concerns on 2nd Embodiment.

(First embodiment)
A unit building according to the first embodiment of the present invention will be described.

  FIG. 1 shows a building 10 as an example of a unit building according to the first embodiment. The building 10 includes a first floor portion 20 constructed by installing a plurality of box-shaped building units 14 (see FIG. 2), 15, 16, and 17 on a foundation 12, and a plurality of pieces on the first floor portion 20. It is configured to include a second floor portion 30 constructed by installing the box-type building units 22, 23, 24, 25 and a roof portion (not shown) installed on the second floor portion 30. An outer wall 28 made of a plurality of panel materials is attached to the side surfaces of the building units 14 to 17 and 22 to 25 of the first floor portion 20 and the second floor portion 30.

  In FIG. 1, the girder direction of the building 10 is indicated by the arrow X direction, the wife direction is indicated by the arrow Y direction, and the height direction orthogonal to the girder direction and the wife direction is indicated by the arrow Z direction. In the first floor portion 20, a building unit 15 as an example of the first building unit is disposed adjacent to the right side of the building unit 14 (see FIG. 2) in the direction of the figure, and is illustrated in the direction of the wife of the building unit 14. As an example of the second building unit, the building unit 16 is disposed adjacent to the front side, and is further on the front side of the building unit 15 in the direction of the wife and on the right side of the figure in the direction of the girder of the building unit 16. Building units 17 are arranged adjacent to each other.

  Similar to the first floor portion 20, in the second floor portion 30, the building unit 23 is arranged adjacent to the right side of the figure in the girder direction of the building unit 22, and adjacent to the front side of the figure in the wife direction of the building unit 22. The building unit 24 is arranged, and the building unit 25 is arranged adjacent to the front side of the building unit 23 in the direction of the wife and on the right side of the figure in the direction of the digit of the building unit 24. Here, the building unit 22 is disposed above the building unit 14 in the height direction, and similarly, the building units 23, 24, and 25 are disposed above the building units 15, 16, and 17, respectively.

  The building units 14, 16, 22, and 24 are the same size building units, and the right side surface (not shown) of the building units 14, 16, 22, and 24 is aligned. Thereby, the wife direction left side surface (illustration omitted) of the building units 15, 17, 23, and 25 is also prepared.

  On the other hand, when the length of the building unit 15 and the building unit 23 in the digit direction is X1, and the length of the building unit 17 and the building unit 25 in the digit direction is X2, X1> X2. That is, the building unit 15 and the building unit 23 are in a state of protruding to the right side of the digit direction with respect to the building unit 17 and the building unit 25, and the building unit 17 and the building unit 25 are building units at the time of flat setback. Yes. And between the side wall on the front side of the building unit 15 and the right side wall of the building unit 17 and between the side wall 23A on the front side of the building unit 23 and the right side wall 25A of the building unit 25. A corner 40 is formed between them.

  In the corner 40 of the first floor portion 20, an opening 55 is formed that is continuous with the side wall of the building unit 15 on the near side in the wife direction and the right side wall of the building unit 17 in the girder direction. In the opening 55, the glass plate 15 </ b> A is fitted into the side wall portion of the building unit 15 on the near side in the wife direction, and the glass plate 17 </ b> A is fitted into the right side wall portion of the building unit 17 in the beam direction. In the second floor portion 30, a continuous opening may be formed on the side wall on the near side of the building unit 23 and on the right side wall of the building unit 25 in the girder direction.

  As shown in FIG. 2, the building unit 14 includes a ceiling frame 32 and a floor frame 34 configured in a rectangular frame shape, and four pillars 36 that connect the ceiling frame 32 and the floor frame 34. Similarly, the building unit 15 includes a ceiling frame 44 and a floor frame 46 configured in a rectangular frame shape, and four pillars 36 that connect the ceiling frame 44 and the floor frame 46. The ceiling frame 38 and the floor frame 42 configured in a rectangular frame shape, and four pillars 36 connecting the ceiling frame 38 and the floor frame 42 are configured.

  On the other hand, the building unit 17 includes a ceiling frame 48 and a floor frame 53 configured in a rectangular frame shape, and three pillars 36 that connect the ceiling frame 48 and the floor frame 53. Further, the building unit 17 is provided with a column omitting portion 54 in which the column 36 is omitted (excluded) in a portion where the corner portion 40 is formed. The column omitting portion 54 includes a joint portion 56 made of a steel pipe column welded at one end of the ceiling girder beam 48A and the ceiling girder beam 48B constituting the ceiling frame 48, and the floor girder beam 53A and the floor girder constituting the floor frame 53. This is a portion having no column between the end portion of the beam 53B and the joint portion 58 formed of a steel pipe column welded.

  In the present embodiment, as an example, the ceiling frames 32, 38, 44, and 48 and the floor frames 34, 42, 46, and 53 are formed of channel steel, and the column 36 is a square and cylindrical steel pipe column. It is configured.

  As shown in FIGS. 2 and 3, the building unit 15 is provided with a reinforcing beam 52 as an example of a reinforcing means on an extension line of the ceiling girder 48 </ b> B of the building unit 17. As an example, the reinforcing beam 52 is a grooved steel in which a steel plate 64 having an L-shaped cross section (see FIG. 5; illustration of bolt holes is omitted) is welded to both ends in the longitudinal direction. It is installed between the ceiling beams 44A and 44B by being fastened to the ceiling beams 44A and 44B constituting a part of the frame 44 with bolts (not shown).

  On the other hand, as shown in FIGS. 4 and 5, a connection bracket 50 as an example of a connection means for connecting the joint portion 56 and the ceiling beam 44A is provided between the joint portion 56 and the ceiling beam 44A. Is provided. The connection bracket 50 is a steel material having a U-shaped flat cross section, and is disposed orthogonally to the flat mounting portions 50A and 50B and the mounting portions 50A and 50B that are opposed to each other with a space therebetween, and the mounting portions 50A and 50B. It is comprised with the flat connection part 50C which connects each one end.

  Here, as shown in FIG. 5, in the connection bracket 50, the attachment portion 50 </ b> A is fastened to the side wall 56 </ b> A of the joint portion 56 with a bolt (not shown), and the attachment portion 50 </ b> B is bolted to the ceiling beam 44 </ b> A together with the steel plate 64. The joint portion 56 and the ceiling girder beam 44A are connected to each other by being fastened at the same time. Thereby, when a horizontal force is applied to the joint portion 56, the horizontal force is distributed to the ceiling girder beam 44 </ b> A and the reinforcing beam 52 via the connection bracket 50.

  As shown in FIG. 4, in the present embodiment, the height of the upper surface of the joint portion 56 is aligned with the upper surface of the ceiling beam 44 </ b> A at the site where the reinforcing beam 52 of the ceiling beam 44 </ b> A of the building unit 15 is attached. The joint plate 62 is welded. With this joint plate 62, the portion of the ceiling beam beam 44A to which the reinforcing beam 52 is attached can be used as a joint, and the construction of the outer wall, roof, etc. of the building units 15, 17, 23, 25 (see FIG. 1). The members can be configured with the same specifications. The joint plate 62 is not essential and may not be provided.

(Function)
Next, the operation of the first embodiment will be described.

  As shown in FIGS. 1 and 2, as a rough construction process flow of the building 10, first, building units 14, 15, 16, 17, 22, 23, 24, and 25 are assembled in a factory. The outer wall 28 and the glass plates 15A and 17A are previously attached to each building unit. The assembled building units 14, 15, 16, 17, 22, 23, 24, 25 are transported to the building site of the building 10.

  On the other hand, the foundation 12 is constructed in the building area of the building 10. Then, the first floor portion 20 is constructed by installing the building units 14, 15, 16, and 17 on the constructed foundation 12 using a crane (not shown). At this time, the building unit 15 and the building unit 17 are connected by the connection bracket 50. Subsequently, similarly, the second floor portion 30 is constructed by installing the building units 22, 23, 24, 25 on the first floor portion 20. Furthermore, the building 10 is completed by constructing a roof portion (not shown) on the second floor portion 30.

  In installing the building unit 17 on the foundation 12, for example, a temporary column (not shown) similar to the other three columns 36 is erected in advance between the joint portion 56 and the joint portion 58. Then, the building unit 17 is carried into the building site from the factory in the form of a box. And after installing the building unit 17 on the foundation 12, and connecting the building unit 15 and the building unit 17 with the connection bracket 50, it can install by removing this temporary pillar (forming the column omission part 54).

  2 to 5, when a horizontal force acts on each part of the building 10 due to an earthquake or the like, the horizontal force (load) acting on the joints 56 and 58 of the building unit 17 is In addition to being distributed to the ceiling frame 48, the floor frame 53, and the pillar 36, it is also distributed to the ceiling frame 44, the floor frame 46, and the pillar 36 of the building unit 15 through the connection bracket 50, and also to the reinforcing beam 52. Distributed. The reinforcing beam 52 receives a part of the horizontal force acting on the joint portion 56 of the building unit 17 and suppresses the deformation of the building unit 17 and reinforces it. Thereby, even if there are no columns in the joints 56 and 58, it can withstand horizontal force. That is, the pillars of the joints 56 and 58 can be removed.

  Further, in the building 10, since there is no column at the corner portion 40, an opening 55 that is continuous (communication) from the building unit 15 to the building unit 17 can be formed. Since this opening 55 makes it possible to recognize the interior of the building unit 15 and the interior of the building unit 17 as one continuous space, a column is provided between the joints 56 and 58 (column omitting portion 54). Compared to the configuration, the resident can visually recognize a single large space, and can feel open. In other words, the degree of freedom for planning the building 10 can be increased.

(Second Embodiment)
Next, a unit building according to a second embodiment of the present invention will be described. Note that the same reference numerals as those in the first embodiment are given to the members that are basically the same as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 6 shows a building 70 as an example of a unit building according to the second embodiment. In the building 10 according to the first embodiment (see FIGS. 1 and 2), the building units 16, 17, 24, and 25 are placed in the wife direction (arrow Y direction) with respect to the building units 14, 15, 22, and 23. It is arranged so as to be separated at a predetermined interval, and further, a connecting portion 76 which is a space for connecting the building units 14, 15, 22, 23 and the building units 16, 17, 24, 25 is provided at this interval. ing.

  Further, in the building 70, the first floor portion 72 is constituted by the building units 14, 15, 16, 17 and the connecting portion 76, and the second floor portion 74 is constituted by the building units 22, 23, 24, 25 and the connecting portion 76. A roof portion (not shown) is installed on the second floor portion 74. Furthermore, the outer wall 28 comprised by the several panel material is attached to the side surface of each building unit 14-17, 22-25, and the glass plate 82 is attached to the upper surface and side surface of the connection part 76. Yes.

  In the building 70, the building unit 15 and the building unit 23 protrude to the right of the digit direction with respect to the building unit 17 and the building unit 25, and the building unit 17 and the building unit 25 are the building units at the time of plane setback. It has become. And between the side wall of the building unit 15 on the front side in the wife direction and the right side wall of the building unit 17 including the connecting portion 76, and on the right side of the side wall 23 </ b> A on the front side in the wife direction of the building unit 23 and the connecting portion 76. A corner 80 is formed between the glass plate 82 and the glass plate 82.

  In the entrance corner 80 of the first floor portion 72, an opening 78 is formed from the side wall on the near side of the building unit 15 to the right side wall of the building unit 17 across the connecting portion 76. In the opening 78, the glass plate 15 </ b> A is fitted into the side wall portion of the building unit 15 on the near side in the wife direction, and the glass plate 84 is fitted into the right side wall portion of the connecting portion 76 and the building unit 17 in the digit direction. . The opening 78 may be formed in the second floor portion 74.

  As shown in FIGS. 7 and 8, between the joint portion 56 and the ceiling girder 44A in the connecting portion 76 of the first floor portion 72, the joint portion 56 and the ceiling girder beam 44A are arranged with the wife direction as a longitudinal direction. A beam member 81 as an example of a connecting means for connecting is installed. The horizontal force acting on the joint portion 56 is distributed to the ceiling beam 44A and the reinforcing beam 52 through the beam member 81.

  A beam member 81 is installed between the joint portion 58 in the connecting portion 76 and the floor girder beam 46A of the floor frame 46 to connect the joint portion 58 and the floor girder beam 46A with the wife direction as the longitudinal direction. ing. A horizontal force acting on the joint portion 58 is distributed to the floor girder beam 46 </ b> A and the floor frame 46 through the beam member 81. In addition, about the connection part 76 of the 2nd floor part 74, since it is the structure similar to the 1st floor part 72, description is abbreviate | omitted.

  As shown in FIG. 9, the beam member 81 is made of channel steel as an example, and end plates 85 that are rectangular plate materials are welded to both ends in the longitudinal direction (wife direction) of the beam member 81. ing. The end plate 85 has a through hole 87 through which a bolt is inserted. The end plate 85 is formed in the through hole 87, the through hole (not shown) of the ceiling beam 44A, and the steel plate 64 (see FIG. 5) of the reinforcing beam 52. One end of the beam member 81 is fixed by inserting and fastening a bolt into the through hole (not shown). Similarly, the other end of the beam member 81 is fixed to the joint portion 56 with a bolt.

  Here, FIG. 12A shows a longitudinal section of the ceiling girder 48B of the building unit 17, and FIG. 12B shows a longitudinal section of the beam member 81 of the present embodiment. Yes. As shown in FIGS. 12A and 12B, for example, the beam member 81 of the present embodiment is a thicker steel material than the ceiling girder 48B, and is orthogonal to the installation direction (wife direction). The cross-sectional area in the direction (girder direction) is larger than the ceiling girder 48B.

  As shown in FIG. 10, a joint plate 92 serving as a dummy joint may be provided on the upper surface of the portion of the ceiling beam 44A to which the beam member 81 is connected (connected). A joint plate 94 serving as a dummy joint may be provided on the upper surface. Thereby, the same effect as the joint plate 62 of 1st Embodiment is acquired.

(Function)
Next, the operation of the second embodiment will be described.

  As shown in FIGS. 7 and 8, as a rough construction flow of the building 70, first, as in the building 10 of the first embodiment, building units 14, 15, 16, 17, 22, 23, Assemble 24 and 25 respectively. The assembled building units 14, 15, 16, 17, 22, 23, 24, 25 are transported to the building site of the building 70.

  On the other hand, the foundation 12 is constructed in the building area of the building 70. Then, the building units 14, 15, 16, and 17 are installed on the foundation 12 using a crane (not shown), and the building unit 14 and the building unit 16, and the building unit 15 and the building unit 17 are connected by beam members 81, respectively. The first floor portion 72 is constructed by forming the connecting portion 76.

  Subsequently, similarly, the building units 22, 23, 24, and 25 are installed on the first floor portion 72, and the building unit 22 and the building unit 24, and the building unit 23 and the building unit 25 are connected by the beam members 81, respectively. The second floor portion 74 is constructed by forming the connecting portion 76. Furthermore, the building 70 is completed by constructing a roof portion (not shown) on the second floor portion 74.

  In installing the building unit 17 on the foundation 12, for example, a temporary column (not shown) similar to the other three columns 36 is erected in advance between the joint portion 56 and the joint portion 58. Then, the building unit 17 is carried into the building site from the factory in the form of a box. And after installing the building unit 17 on the foundation 12 and connecting the building unit 15 and the building unit 17 with the beam member 81, it can install by removing this temporary pillar.

  Here, as shown in FIGS. 7, 8, 9, and 11, in the building 70, when a horizontal force acts on each part due to an earthquake or the like, a horizontal force (load) that acts on the joints 56 and 58 of the building unit 17. Are distributed with respect to the ceiling frame 48, the floor frame 53, and the pillar 36 of the building unit 17, and the ceiling frame 44 and the floor of the building unit 15 through the beam member 81 having a cross-sectional area larger than that of the ceiling girder 48B. It is also distributed to the frame 46 and the column 36 and further to the reinforcing beam 52. The reinforcing beam 52 receives a part of the horizontal force acting on the joint portion 56 of the building unit 17 and suppresses the deformation of the building unit 17 and reinforces it. Thereby, in the building 70, even if there are no pillars in the joint portions 56 and 58, it can withstand horizontal force. That is, the pillars of the joints 56 and 58 can be removed.

  As described above, in the building 70, even if the building unit 15 and the building unit 17 are so-called separated units installed at a predetermined distance or more, the building unit 17 is connected to the building unit 15 via the beam member 81. Since the load is dispersed, the strength of the joints 56 and 58 excluding the pillars of the building unit 17 can be increased, and the continuous opening 78 can be installed at the corner 80.

  In addition, in the building 70, the length of the girder direction of the building unit 15 and that of the building unit 17 are different, so that the position of the stigma (upper part of the column 36) is shifted. Since the beam member 81 is bridged and connected to the ceiling girder beam 44A of the building unit 15 having a long girder direction length from the mouth portion 56, the outer peripheral panel (outer wall 28) including the portion of the connecting portion 76 is connected. Can be installed.

  Further, in the building 70, since there is no column in the corner 80, the interior of the building unit 15 and the interior of the building unit 17 can be recognized as one continuous space through the opening 78. Compared with the structure which provided the pillar between the mouth parts 56 and 58 (column omission part 54), the resident can visually recognize one large space, and can obtain a feeling of opening. In other words, the degree of freedom for planning the building 70 can be increased.

  In addition, this invention is not limited to said embodiment.

  The buildings 10 and 70 may have different sizes and shapes in the first floor portions 20 and 72 and the second floor portions 30 and 74. Further, the connecting portion 76 of the building 70 may use an outer wall material such as a panel material instead of the glass plate 82. Furthermore, the ceiling girder beam 44A may be reinforced by replacing the grooved steel with a steel member having a rectangular cross section so that a large load is borne by the ceiling girder beam 44A.

  The reinforcing beam 52 is not limited to channel steel, and may be a steel material having another shape, for example, an L-shaped angle. And the fixing method of the both ends of the reinforcing beam 52 is not limited to bolt fastening, but may be welding. Further, the reinforcing beam 52 is not limited to the extension line of the ceiling girder 48B, and may be arranged slightly shifted from the extension line.

  Further, as a method of increasing the cross-sectional area (strength) of the beam member 81, not only the plate thickness of one beam member 81 is changed, but, for example, two channel steels may be arranged side by side.

10 Building (unit building)
15 Building unit (first building unit)
17 Building unit (second building unit)
36 Column 40 Corner 44A Ceiling beam (girder beam)
48B Ceiling Tsumara (Tsumari)
50 Connection bracket (reinforcement means, connection means)
52 Reinforcement beams (reinforcement means)
55 Opening 56 Jointing part 58 Jointing part 70 Building (unit building)
78 Opening 81 Beam member (reinforcing means, connecting means)

Claims (5)

A plurality of building units including a first building unit including a column, a girder beam, and a girder, and a second building unit; the girder beam of the first building unit; and the first building unit; In the unit building where the corner of the second building unit is arranged adjacent to the end beam,
In the second building unit, the pillar located at the corner is removed,
Reinforcement that reinforces the second building unit against the horizontal force received from the joint portion at the location excluding the column of the second building unit, in the girder beam in the corner of the first building unit Unit building where means are provided. The reinforcing means is
Connecting means for connecting the beam of the first building unit and the joint portion of the second building unit;
A reinforcing beam spanned between the girder beams of the first building unit along a spanning direction of the girder beam passing through the corner of the second building unit;
The unit building according to claim 1. The first building unit and the second building unit are installed apart from each other by a predetermined distance,
3. The unit building according to claim 2, wherein the connection means is a beam member constructed between the joint portion of the second building unit and the girder of the first building unit.   4. The unit building according to claim 3, wherein the beam member has a larger cross-sectional area in a direction perpendicular to the erection direction than a span beam passing through the corner of the second building unit. 5.   5. The opening according to claim 1, wherein an opening that communicates the inside of the first building unit and the inside of the second building unit is provided in the corner. Unit building.

Images