JP2002188210A - Unit type building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit type building in which the kinds of units at a time when the unit type building with an overhang section is built are decreased and works at a construction site can be reduced. SOLUTION: In the unit type building with the overhang section constituted by combining a plurality of building units with frames 310 and 510 formed in a box shape by connecting the upper and lower ends of columns 311 at four corners by ceiling beams 312 and floor beams 313 and configured by installing at least one or more of the overhanging sections 5A in which a part of an upper floor unit 51 arranged on the upper floor side is overhung to the outdoor side from a lower floor unit 31 arranged on the lower floor side, a reinforcing beam 100 in which a base end is connected to the upper floor unit 51 extending in the overhanging direction of the overhanging section 5A and/or the beams 312 and 313 of the lower floor unit 31 and a front end supports the overhanging section 5A is mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combination of a plurality of building units each having a box-shaped frame formed by connecting upper and lower ends of four pillars with a ceiling beam and a floor beam. The present invention relates to a unit-type building having an overhang portion configured by providing at least one or more overhanging portions in which a part of an upper-floor unit to be arranged projects outward from a lower-floor unit arranged on a lower-floor side.

[0002]

2. Description of the Related Art Conventionally, unit-type buildings constructed by combining a plurality of box-shaped building units manufactured in a factory at a building site have been used. As a building unit forming this unit-type building, a building unit having a box-shaped frame in which upper and lower ends of four pillars are connected by ceiling beams and floor beams is generally used. The frame includes a ceiling surface material supported by ceiling beams, a floor surface material supported by floor beams, interior materials such as partition walls for partitioning a room, and exterior materials such as an outer wall formed of lightweight cellular concrete or the like. Assembled with

According to such a unit-type building, a building unit is manufactured by carrying out the work of attaching an interior material and an exterior material to a box-shaped frame in a factory, and then the building unit is transported to a site to perform a connection work. Since the building is completed just by performing the work, there is an advantage that the work on the construction site is greatly reduced and the construction can be completed in a short time.

[0004] On the other hand, in a unit building in which building units are vertically stacked, an upper-hanging wall surface may form an overhang portion protruding more outdoors than a lower-floor wall surface. Conventionally, in such a case, after combining upper and lower floor units having the same planar shape, on the side surface of the upper floor unit,
The overhang portion was formed by attaching the extension unit by cantilever support (Japanese Patent No. 272095).
No. 6).

[0005]

However, in the above-mentioned conventional method, since the unit corresponding to the overhang portion is manufactured separately, there is a problem that the number of types of units increases. In addition, after the upper and lower floor units are installed at the building site, the extension unit must be mounted on the upper floor unit in a cantilevered state, which causes a problem that the operation becomes complicated.

An object of the present invention is to reduce the number of unit types when building a unit type building having an overhang portion,
An object of the present invention is to provide a unit-type building that can reduce the work at a building site.

[0007]

According to the first aspect of the present invention, the upper and lower ends of the pillars 311 at the four corners are connected by a ceiling beam 312 and a floor beam 313 to form frames 310, 3 formed in a box shape.
A lower floor unit 31, which is configured by combining a plurality of building units having 20, 510, 520, and 530, and a part of upper floor units 51, 52, and 53 disposed on the upper floor side is disposed on the lower floor side. Overhanging part 5 that extends outside from 32
A unit type building 1 having an overhang portion 5 constituted by including at least one of A, 5B and 5C, and a beam of an upper floor unit and / or a lower floor unit extending in a direction in which the overhang portion extends. And a base end is connected, and a reinforcing beam 100 whose front end supports the overhang is provided.

According to the present invention, since the reinforcing beam interposed between the upper and lower floor units at the base end supports the lower surface of the upper floor unit at the distal end, the projecting portion of the upper floor unit is firmly fixed. Can be supported. Therefore, since an extension unit is not required, on-site work can be reduced. Also,
The reinforcement beams are separate from the building units, and the reinforcement beams can be attached to the upper floor unit or the lower floor unit according to the position of the overhang, so that the overhang portion is formed without increasing the types of building units be able to.

According to a second aspect of the present invention, in the unit type building according to the first aspect, the reinforcing beam forms a frame of an upper floor unit or a lower floor unit, and extends in a direction in which the overhang portion projects. Characterized by being provided along. According to the present invention, the reinforcing beam is provided along the beam extending in the direction in which the overhang portion protrudes,
Since the reinforcing beam can be firmly integrated with the frame of the building unit, the support structure of the overhang can be further strengthened.

According to a third aspect of the present invention, in the unit type building according to the second aspect, the reinforcing beam has a vertical extension portion 100A extending from a ceiling beam of a lower floor unit to a floor beam of an upper floor unit. It is characterized by. According to the present invention, since the reinforcing beam has the vertical extension, the height of the reinforcing beam can be made sufficiently large, so that the load applied in the vertical direction can be more firmly supported. Further, since the vertical extension extends from the ceiling beam of the lower floor unit to the floor beam of the upper floor unit, it can be fixed to both frames of the upper floor unit and the lower floor unit. And the lower floor unit can be fixed.

According to a fourth aspect of the present invention, in the unit type building according to the third aspect, the reinforcing beam is horizontally projected from the vertical extension and is interposed between the upper and lower floor units. It is characterized by having a part 100B. According to this invention, since the reinforcing beam is provided with the horizontal projecting portion, after the horizontal projecting portion is interposed between the upper and lower floor units, the reinforcing beam can be aligned and the reinforcing beam can be attached to the upper and lower floor units. The reinforcing beams can be easily installed on the upper and lower floor units.

According to a fifth aspect of the present invention, in the unit type building according to the fourth aspect, the horizontal projecting portion is provided with a connecting portion 101 for connecting beams or columns of the upper and lower floor units. According to this invention, since the horizontal projecting portion includes the connecting portion, the beams of the upper and lower floor units can be connected by the connecting portion, so that the support strength of the overhang portion can be further improved.

According to a sixth aspect of the present invention, in the unit type building according to any one of the first to fifth aspects, the upper floor unit is provided at a position corresponding to an outdoor pillar of the lower floor unit. Intermediate pillars 315 and intermediate beams 31 provided at positions corresponding to ceiling beams on the outdoor side of the lower floor unit.
6 is provided. According to the invention,
The upper floor unit has an intermediate pillar and an intermediate beam,
Since the intermediate pillars and the intermediate beams serve to support the weight of the overhangs on the beams of the upper floor unit, the strength of the beams of the upper floor unit can be increased.

According to a seventh aspect of the present invention, in the unit type building according to any one of the first to sixth aspects, the overhang portion is stretched from each of two mutually intersecting side surfaces of the lower floor unit. 2C overhang 5C
The two-direction overhang portion has a corner reinforcing beam 110 extending in the overhang direction along each outdoor side surface from a pillar arranged at the intersection of the outdoor side surface of the lower floor unit. .

According to the present invention, since the corner reinforcing beam has the corner reinforcing beam, the portion extending obliquely from the corner of the lower floor unit of the two-way projecting portion can be reliably supported by the corner reinforcing beam. Can correspond to the shape of the overhang portion.

[0016]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 shows a unit-type building 1 according to a first embodiment of the present invention. The unit building 1 includes a foundation 2, a building body 3 formed on the foundation 2, and a roof 4 formed on the building body 3. An overhang portion 5 is formed in which the wall surface of the floor protrudes outward from the wall surface of the lower floor.

As shown in FIG. 1, the building body 3 includes lower floor units 31 and 32, a building unit 33, and an upper floor unit 5.
1, 52 and 53 are configured in combination. The overhang portion 5 includes the lower floor unit 31 and the upper floor unit 5.
1 and up and down unit 5A, lower floor unit 32 and upper floor unit 52 are vertically combined, and overhang unit 5B, lower floor unit 32 and upper floor unit 53 are vertically connected. Two-way overhang 5 configured in combination
And C are arranged side by side.

The lower floor unit 31, as shown in FIG.
A frame 310 having a rectangular parallelepiped shape is provided.
Are pillars 311 erected at four corners, and a ceiling beam 312 and a floor beam 31 bridged between the upper end and the lower end of these columns 311.
3, the column 311 and the beams 312, 313 are connected via a joint box 314. In such a frame 310, although not shown in FIG. 2, a plurality of ceiling beams for attaching a ceiling material are provided between a pair of ceiling beams 312 extending in the long side direction of the rectangular parallelepiped.
A plurality of floor joists 317 are provided between the pair of floor beams 313 extending in the long side direction.

Further, as shown in FIG. 3, the lower floor unit 32 has a frame 320 like the lower floor unit 31, and this frame 310 has pillars 311 standing upright at four corners.
And a ceiling beam 312 and a floor beam 313 which are bridged between the upper end and the lower end of these columns 311. The columns 311 and the beams 312, 313 are connected via a joint box 314. The lower floor unit 32 differs from the lower floor unit 31 only in that the lengths of the beams 312 and 313 in the short side direction are shorter. And the building unit 3 shown in FIG.
3 is completely the same in shape and size as the lower floor unit 31, and 2
The only difference is that they are located on the floor.

The upper floor unit 51 is, as shown in FIG.
Pillar 311, beam 312, 31 as well as lower floor unit 31
Although the frame 510 has a rectangular parallelepiped frame 510 provided with a portion 3, a portion of the long side that protrudes from the lower floor unit 31 to the outdoor side is defined as an overhang portion 5 </ b> A. In the upper floor unit 51, intermediate pillars 315 are provided between a pair of ceiling beams 312 in the long side direction which form side surfaces of the upper floor unit 51. This intermediate column 315 corresponds to the position of the outdoor side column 311 of the lower floor unit 31. Such an intermediate pillar 315
And the beams 312 and 313 are joined via a joining box 314, and a pair of joining boxes 314 located on the upper surface,
An intermediate beam 316 is provided between the pair of joining boxes 314 located on the lower surface.

The upper floor unit 51 is a lower floor unit 3
1 has an overhang portion 5A, which is a portion that overhangs the outdoor side. The overhang 5A is a space defined by the intermediate pillar 315 and the intermediate beam 316. The connection between the upper floor unit 51 and the lower floor unit 31 is performed by joining boxes 314 on the indoor side (right side in the figure), joining boxes 314 on the outdoor side of the lower floor unit 31, and joining boxes on the lower end of the intermediate pillar 315 of the upper floor unit 51. 314 is performed. A reinforcing beam 100 is interposed between the upper floor unit 51 and the lower floor unit 31. Further, although not shown, joining is performed by passing through an insertion hole (not shown) formed in each joining box 314 with a bolt, a nut or the like.

As shown in FIG. 3, the upper floor unit 52 also has a rectangular parallelepiped frame 520 provided with columns 311, beams 312 and 313, but is different from the upper floor unit 51 only in the short side direction. The points are different. And the upper floor unit 5
As in the case of 1, the portion whose short side extends beyond the lower floor unit 32 to the outdoor side is defined as an overhang portion 5 </ b> B. Further, the connection between the upper floor unit 52 and the lower floor unit 32 is
Similarly to the connection between the first floor unit 31 and the lower floor unit 31, a reinforcing beam 100 is interposed between the upper floor unit 52 and the lower floor unit 32, and a bolt (not shown) formed in the joint box 314 using nuts and the like. It is performed by joining by passing through a hole.

As shown in FIG. 4, the upper floor unit 53
It has a rectangular parallelepiped frame 530 provided with columns 311, beams 312 and 313, but differs from the upper floor unit 51 in that it is longer in the short side direction and the long side direction, and in the short side direction and the long side direction. The portion protruding from the lower floor unit 32 to the outdoor side is defined as a two-direction overhang portion 5C. Also in the upper floor unit 53, an intermediate pillar 315 is bridged between the ceiling beam 312 and the floor beam 313. This intermediate pillar 315 is a lower floor unit 3
2 corresponds to the position of the outdoor side pillar 311.

The intermediate column 315 and the beams 312, 3
13 are joined via a joining box 314. The upper floor unit 53 is provided at the upper end of the intermediate pillar 315.
An intermediate beam 316 is provided between the pair of joining boxes 314 located on the ceiling beam 312 in the short side direction on the upper surface.
An intermediate beam 316 is also provided between the pair of joining boxes 314 located on the lower surface in the short side direction and the long side direction. Further, a portion where the middle beam 316 on the lower surface side of the upper floor unit 53 intersects corresponds to the outdoor side pillar 311 of the lower floor unit 32.

Between the lower-floor unit 32 and the upper-floor unit 53, a member having an L-shaped cross section and having a cross-shaped overall planar shape and a rectangular plate-shaped member are disposed on the upper surface of the intersection. The corner reinforcing beam 110 configured as described above is sandwiched and joined.

FIG. 5 shows a state in which a reinforcing beam 100 is interposed and connected between the upper floor units 51 and 53 and the lower floor units 31 and 32. A positioning pin 314A and an insertion hole 314B are provided on the upper surface of the joining box 314 of the lower floor units 31 and 32, and a positioning hole (not shown) is provided on the lower surface of the joining box 314 of the upper floor units 51 and 53. A hole is provided. Further, a positioning hole (not shown) and an insertion hole 314B are provided on the lower surface of the joining box 314 on the lower surface of the intermediate column 315.

The reinforcing beam 100 includes a vertically extending portion 1 serving as a main body.
00A and a horizontal projecting portion 100B projecting horizontally from the vertically extending portion 100A. The vertical extension portion 100A has substantially the same length as the floor beams 313 in the long side direction of the upper floor units 51 and 53, and the height dimension is the same as that of the floor beams 313 in the long side direction of the upper floor units 51 and 53. From the upper end to the lower end of the ceiling beam 312 in the long side direction of the lower floor units 31, 32.

The horizontal projecting portion 100B is provided at a substantially middle position of the vertical extending portion 100A in the horizontal direction, and is further provided at a position of the joining box 314 of the upper floor units 51 and 53 in the longitudinal direction. It is provided correspondingly. Further, the connecting portion 101 is provided on the horizontal projecting portion 100B,
It comprises a positioning hole 101A and an insertion hole 101B. And the reinforcing beam 100 is attached to the vertical extension 100A,
The horizontal protruding portion 100B on which the connecting portion 101 is formed in advance is welded, and the support member 102 is connected to the vertically extending portion 100A and the horizontal protruding portion 1B.
It is manufactured by welding to the contact surface of 00B.

The connection unit 101 is used to connect the building units 31, 32, 51 and 53. This connection part 101
Are joint boxes 314 at the upper end sides of a plurality of columns 311 adjacent to the lower floor units 31 and 32, and the upper floor units 51 and 53
Between the joint box 314 on the lower end side of the pillar 311 and the joint box 314 on the lower end side of the intermediate pillar 315, the building units 31, 32, 51, 53 adjacent to each other in the vertical and horizontal directions. Are linked.
Bolts 120, nuts 121, and washers 122 are used to connect the building units 31, 32, 51, 53.

Specifically, the connecting portion 101 is provided with a positioning hole 101A and an insertion hole 101B. Pillar 311 upper end side joint box 31 of lower floor units 31 and 32
4 is inserted through the positioning hole 101A of the connecting portion 101, and the insertion hole 314 of the lower end side joining box 314 of the intermediate column 315 of the upper floor units 51 and 53 is inserted.
B, the building units 31, 32,
The position between 51 and 53 is determined.

The pillars 31 of the lower floor units 31, 32
1, the insertion hole 314B of the upper joining box 314, the insertion hole 101B of the connecting portion 101, and the upper floor units 51, 5
Insertion hole 31 of lower end side joining box 314 of 3rd pillar 311
4B, the bolt 120 is inserted, and the washer 12
The building units 31, 32, 51, and 53 are connected to each other by passing a bolt 120 through 2 and screwing a nut 121 to the bolt 120 and tightening. further,
The connection of the upper floor units 52 and 53 and the lower floor units 32 and 32 is similarly performed with a reinforcing beam 100 interposed therebetween.

FIG. 6 shows the intermediate beams 31 of the upper floor unit 53.
6, the connection between the ceiling beam 312 of the lower floor unit 32 and the corner reinforcing beam 110 is shown. Corner reinforcing beam 110
The L-shaped upper surface portion contacts the intermediate beam 316 of the upper floor unit 53, and the lower surface portion contacts the ceiling beam 312 of the lower floor unit 32. Each beam 3 of the corner reinforcing beam 110
12 and 316, the intermediate beam 316 and the ceiling beam 312 are formed with through holes 120A in advance, and the bolts 120 are inserted through the through holes 120A, and the nut 1
21 is tightened by screwing, and corner reinforcing beam 1
10, the intermediate beam 316 and the ceiling beam 312 are joined.

The procedure for building the unit building 1 is as follows.
First, the lower floor units 31, 32 are installed on the foundation 2,
Next, the reinforcing beam 100 and the corner reinforcing beam 110 are connected to the ceiling beam 3.
12 along with the upper floor units 51, 52, 53,
The building unit 33 is installed on the lower floor units 31 and 32, and the corresponding joint boxes 314 are joined to the reinforcing beams 100 and the corner reinforcing beams 110 using bolts 120 and nuts 121. Then, the roof 4 is moved to the upper floor units 51, 5
The unit-type building 1 is completed by being connected on top of 2, 53.

According to the above-described embodiment, the following effects can be obtained. (1) Since the lower surfaces of the upper floor units 51, 52 and 53 are supported by the horizontal projecting portions 100B of the reinforcing beams 100,
Overhang portions 5A, 5B, 2 of upper floor units 51, 52, 53
The direction extension part 5C can be firmly supported. Therefore, since an extension unit is not required, on-site work can be reduced. In addition, the reinforcing beam 100 is
The upper floor units 51, 52, and 53 are provided separately from the first, second, and third protrusions 5A, 5B, and 2C according to the positions of the two-direction protrusions 5C.
Since the reinforcing beams 100 may be attached to the units 53 and the lower floor units 31 and 32, the overhang portion 5 can be formed without increasing the types of building units.

(2) When the reinforcing beam 100 is extended
B, a floor beam 31 extending in the direction in which the two-direction overhang portion 5C overhangs
3, the reinforcing beam 100 can be firmly integrated with the frames 310 and 510 of the building unit, so that the support structure of the overhanging portions 5A, 5B and the two-way overhanging portion 5C is further strengthened. Can be

(3) The reinforcing beam 100 is
By providing A, the height dimension of the reinforcing beam 100 can be made sufficient, so that the load applied in the vertical direction can be more firmly supported. Also, the vertical extension 100A
Extend from the ceiling beams 312 of the lower floor units 31 and 32 to the floor beams 313 of the upper floor units 51, 52 and 53, so that the upper floor units 51, 52 and 53 and the lower floor unit 3
1 and 32, so that the upper floor units 51, 52, and
53 and lower floor units 31, 32 can be fixed

(4) The reinforcing beam 100 is
B, after the horizontal protrusion 100B is interposed between the upper and lower floor units 51, 52, 53, 31, 32,
After the alignment, the reinforcing beam 100 is moved to the upper and lower floor units 5.
1, 52, 53, 31, 32, the reinforcing beam 100 can be easily attached to the upper and lower floor units 51, 5
2, 53, 31, 32. (5) Since the horizontal projecting portion 100B includes the connecting portion 101, the upper and lower floor units 51, 52, 53, 3
1 and 32 beams 312, 313 and 316
, So that the overhanging portions 5A, 5B and the two-way overhanging portion 5 can be connected.
The supporting strength of C can be further improved.

(6) The upper floor units 51, 52, 53
By providing the intermediate column 315 and the intermediate beam 316, the intermediate column 315 and the intermediate beam 316 can be connected to the upper floor units 51, 52, 5
Projecting parts 5A, 5B, 2
Since it functions to support the weight of the direction extension portion 5C, the strength of each of the beams 312, 313 of the upper floor units 51, 52, 53 can be increased. (7) By having the corner reinforcing beams 110, the portions extending obliquely from the corners of the lower floor unit 32 of the two-direction projecting portion 5C can be reliably supported by the corner reinforcing beams 110, so that various types of overhangs can be provided. It can correspond to the shape of the hang portion.

It should be noted that the present invention is not limited to the above embodiment, and modifications and improvements as long as the object of the present invention can be achieved are included in the present invention. For example, in the present embodiment, the lengths of the short sides of the lower floor units 31 and 32 are different, but this is not a limitation.
The size of the upper floor units 52, 53
The overhang portion 5 may be configured by increasing the length of the short side of the overhang portion 5.

Further, in the present embodiment, the reinforcing beams 100 and
Upper floor units 51, 52, 53 and lower floor unit 3
The connection of each of the beams 1 and 32 with each of the beams 312 and 313 is performed at the connection portion 10.
However, the present invention is not limited to this. An insertion hole is provided in the vertically extending portion 100A, and an insertion hole is provided in each of the beams 312 and 313 so as to correspond to the insertion hole. Connection.

Further, the horizontal projecting portion 100B is provided only at a position corresponding to the joining box 314 to be connected. However, the present invention is not limited to this. Connection part 1 only at the connecting position
01 may be formed. In addition, the specific structure, shape, and the like at the time of carrying out the present invention may be other structures and the like as long as the object of the present invention can be achieved.

[0042]

According to the first aspect of the present invention, since the reinforcing beam interposed between the upper and lower floor units at the base end supports the lower surface of the upper floor unit at the distal end, the upper floor unit extends. The part can be firmly supported. Therefore, since an extension unit is not required, on-site work can be reduced. In addition, the reinforcing beams are separate from the building units, and the reinforcing beams may be attached to the upper floor unit or the lower floor unit according to the position of the overhang, so that the overhang portion can be installed without increasing the number of building units. Can be formed.

According to the second aspect of the present invention, by being provided along the beam extending in the projecting direction of the projecting portion,
Since the reinforcing beam can be firmly integrated with the frame of the building unit, the support structure of the overhang can be further strengthened.

According to the third aspect of the present invention, the reinforcing beam is
By providing the vertically extending portion, the height of the reinforcing beam can be made sufficiently large, so that the load applied in the vertical direction can be more firmly supported. Also, since the vertical extension extends from the ceiling beam of the lower floor unit to the floor beam of the upper floor unit, it can be fixed to both the frames of the upper floor unit and the lower floor unit. And the lower floor unit can be fixed.

According to the fourth aspect of the present invention, the reinforcing beam is
By providing the horizontal projection, after the horizontal projection is interposed between the upper and lower floor units, it is possible to perform alignment and attach the reinforcing beams to the upper and lower floor units. Can be installed.

According to the fifth aspect of the present invention, since the horizontal projecting portion has the connecting portion, the beams of the upper and lower floor units can be connected by the connecting portion, so that the supporting strength of the overhang portion is further improved. be able to.

According to the sixth aspect of the present invention, since the upper floor unit includes the intermediate pillar and the intermediate beam, the intermediate pillar and the intermediate beam have a function of supporting the weight of the projecting portion on the beam of the upper floor unit. Therefore, the strength of the beams of the upper floor unit can be increased.

According to the seventh aspect of the present invention, since the corner reinforcing beams are provided, the portions extending obliquely from the corners of the lower floor unit of the two-way projecting portion are reliably supported by the corner reinforcing beams. Therefore, it is possible to cope with various shapes of the overhang portion.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a unit-type building according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a connection between an upper floor unit and a lower floor unit which protrude only on a short side in the embodiment.

FIG. 3 is a perspective view showing a connection between an upper floor unit and a lower floor unit which protrude only on a long side in the embodiment.

FIG. 4 is a perspective view showing the joining of an upper floor unit and a lower floor unit which protrude to a short side and a long side in the embodiment.

FIG. 5 is a diagram showing a connection method via a reinforcing beam between an upper floor unit and a lower floor unit.

FIG. 6 is a diagram showing a method of joining corner reinforcing beams.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Unit type building 5 Overhang part 5A, 5B Overhang part 5C Two-way overhang part 31, 32 Lower floor unit 33 Building unit 51, 52, 53 Upper floor unit 100 Reinforcement beam 100A Vertical extension part 100B Horizontal projection part 101 Connection part 110 Corner reinforcing beam 310, 320, 510, 520, 530 Frame 311 Column 312 Ceiling beam 313 Floor beam 315 Intermediate column 316 Intermediate beam

Claims (7)

[Claims] An upper floor unit comprising a plurality of building units each having a box-shaped frame formed by connecting the upper and lower ends of four corner pillars with a ceiling beam and a floor beam, and arranged on the upper floor side. A unit-type building having an overhang portion configured by providing at least one or more overhanging portions that overhang the outdoor side from a lower-floor unit disposed on the lower-floor side, wherein the overhang portion is provided. A unit type building, wherein a base beam is connected to a beam of an upper floor unit and / or a lower floor unit extending in a projecting direction of a base, and a reinforcing beam is provided at a distal end of the building to support the projecting portion. 2. The unit type building according to claim 1, wherein the reinforcing beam forms a frame of an upper floor unit or a lower floor unit, and is provided along a beam extending in a direction in which the overhanging portion extends. Unit-type building characterized by being. 3. The unit building according to claim 2, wherein the reinforcing beam has a vertical extension extending from a ceiling beam of the lower floor unit to a floor beam of the upper floor unit. . 4. The unit-type building according to claim 3, wherein the reinforcing beam has a horizontal projecting portion which is horizontally projected from the vertically extending portion and interposed between upper and lower floor units. Unit building. 5. The unit-type building according to claim 4, wherein the horizontal projecting portion includes a connecting portion for connecting beams or columns of the upper and lower floor units. 6. The unit-type building according to claim 1, wherein the upper floor unit is an intermediate pillar provided at a position corresponding to an outdoor pillar of the lower floor unit; A middle beam provided at a position corresponding to the ceiling beam on the outdoor side of the lower floor unit. 7. The unit-type building according to claim 1, wherein the overhang portion is a two-way projecting portion projecting from each of two mutually intersecting side surfaces of the lower floor unit. A unit comprising, in the two-sided overhanging portion, a corner reinforcing beam extending in a projecting direction along each outdoor side surface from a pillar arranged at an intersection of the outdoor side surface of the lower floor unit. Ceremony building.