JP2000257163A - Building unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building unit which can be reinforced without increasing subframes. SOLUTION: A joint portion 30 is provided immediately below a stud 21 of a subframe, and the joint portion 30 is linked to a foundation 60. Therefore, the stud 21 can function as a structural member, which leads to improved rigidity of a building unit. As a result, the building unit can be positively reinforced without addition of the subframes, to thereby reduce motion at the time of a windstorm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building unit constituting a unit building.

[0002]

2. Description of the Related Art Conventionally, as a building unit constituting a unit-type building, four pillars erected at four corners, two long side ceiling beams erected between the upper ends of these pillars, and A rectangular parallelepiped having a framework composed of a short-side ceiling beam and two long-side floor beams and two short-side floor beams installed between the lower ends of the columns is known.

Usually, such building units are arranged on a foundation in a plurality of rows in a short side direction and a long side direction to form a first floor portion of a unit type building. As shown in FIG. 4, there is a case where unit-type buildings are built in a row in the short side direction.

[0004] In such a building for narrow land, as a surface member (frame of a ramen structure composed of columns and beams) along the long side of the building unit 100, a pair of columns, these columns are used. The long side ceiling beam erected between the upper ends of the
In addition, since only the long side ceiling beams are provided between the lower ends of the columns, the sub-frame 20 is assembled at a specific location in the building unit 100 in consideration of earthquake resistance.

[0005] Such a subframe 20 is shown in FIG.
As shown in (A) to (C), a stud erected between a ceiling beam and a floor beam on one long side, a pair of upper and lower cross members connecting the stud and one of the columns, and each cross member In addition to the above configuration, there is a configuration in which a brace is installed in a portion surrounded by a square, and as shown in (D), a stud and one of the columns are connected by a lattice (truss) material.

[0006]

By the way, even when the building unit 100 is reinforced with the above-described sub-frame 20, the shaking of the building may be felt during a storm.
There is a demand to further reinforce building units. However, if the number of sub-frames 20 is increased more than the current situation, there is a problem that the size of the window is limited, the number of sleeve walls that protrude into the living room increases, and the number of sub-frames cannot be easily increased.

An object of the present invention is to provide a building unit that can be reinforced without increasing the number of subframes.

[0008]

The building unit according to the present invention is, as described by using the reference numerals in the embodiments described later, a building unit 10 reinforced by a subframe 20 including a stud 21. In addition, in the vicinity position corresponding to the stud, the joining portion 3 to be joined to the lower structure 60 is provided.
0 is provided.

According to the present invention, by joining the joint provided at the position where the stud is erected to the lower structure, the stud acts as a structural material and the rigidity of the building unit is improved. Therefore, the building unit is reliably reinforced without adding a subframe.

In the building unit of the present invention, the structure is a foundation, and the foundation and the joint are connected by an anchor bolt 50 whose upper side is attached to the joint and whose lower side is embedded in the foundation. Preferably, they are joined. Normally, the building unit is joined to the foundation at the portions corresponding to the lower ends of the four corner pillars via anchor bolts, but in the present invention, the joint and the foundation can be joined by similar means, and workability is good. is there.

At this time, the anchor bolt is attached to the joint in advance, a sheath pipe 61 into which the anchor bolt is inserted is buried in the base in advance, and a grout material 62 is injected into the sheath pipe. Is also good. In such a case, since the lower side of the anchor bolt is buried in the grout material in the sheath tube at the same time when the building unit is placed on the foundation, the working efficiency can be further improved,
In addition, the hardening of the grout material makes it possible to securely join the foundation and the joint via the anchor bolt.

Further, the stud is erected on an upper flange 16 of a floor beam made of a channel material.
It is preferable that an extension 41 is provided on the lower flange 17 of the floor beam, and an extension 41 extending toward the opening side of the channel material is provided at a portion of the lower flange where the joint is provided. In such a case, since the studs are erected on the upper flange of the floor beam, there is no stud in the opening space of the floor beam made of the channel material. Therefore, in the lower flange of the floor beam, the anchor bolt can be attached using this wide opening space. In addition, since the extension of the channel material is provided at the portion where the joint of the lower flange is provided, the attachment position of the anchor bolt can be set closer to the opening side. It becomes even easier.

A pair of gusset plates 42 are provided between the upper and lower flanges of the floor beam so as to sandwich the joint from the longitudinal direction of the floor beam, and these gusset plates and the extending portion are integrated. It is preferable that the reinforcing member 40 is formed. In other words, the gusset plates provided between the upper and lower flanges surely reinforce the area around the joint. In addition, since the gusset plate and the extending portion are integrally formed with the reinforcing member, the extending portion can be reinforced reliably. And each gusset plate and extension part are easily formed in a long side floor beam only by welding etc. after fitting a reinforcement member.

Further, in the building unit of the present invention, it is preferable that a reinforcing plate 43 is laid across a portion of the lower flange where the joint is provided and the extension.
The joint and the extension are further reinforced, and buckling of the floor beam and the like are more reliably prevented.

Further, in the above, the stud is erected on a floor beam, the joint is provided on the floor beam, and a position where the joint is provided and a position where the stud is erected. Is desirably slightly shifted in the longitudinal direction of the floor beam. In such a case, in the floor beam,
Since the position is different between the part reinforced by the studs being erected and the part reinforced by providing the joint and joining to the lower structure, the floor beam is reinforced at two different parts. Will be. Therefore, the floor beam is much less likely to bend, and its deformability is improved.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIG. 1 is a perspective view from below showing a framework of a building unit 10 according to the present embodiment, FIG. 2, FIG.
FIG. 2 is a perspective view and a longitudinal sectional view, partially broken away, showing a main part of the building unit 10.

The frame of the building unit 10 is composed of four pillars 11 erected at four corners, and two long-side ceiling beams 12 and two short-side ceiling beams erected between the upper ends of the pillars 11. 1
3 and two long-side floor beams 14 and short-side floor beams 15 erected between the lower ends of the columns 11. Each of the beams 12 to 15 is made of a channel material having a C-shaped cross section.

On one long side of such a frame, a stud 21 is erected between the long side ceiling beam 12 and the long side floor beam 14, and is provided between the stud 21 and one of the columns 11. In the figure, a pair of cross members 22 parallel to each other are vertically installed at intervals, and a pair of braces 23 are installed diagonally in a region surrounded by these cross members 22. That is, the studs 21, the cross members 22, and the braces 23 form the subframe 20 according to the present invention.

The pillar 21 of the sub-frame 20 is fixed on the upper flange 16 of the long side floor beam 14 by welding or the like. The lower flange 17 of the long-side floor beam 14 is provided with a joint 30 having a cutout 31 at a position corresponding to the stud 21. At this time, outside of the joint 30
The extending portion 41 extends horizontally from the lower flange 17.
The notch 31 is formed at substantially the center in the width direction of the lower flange 17 including the extension 41.

Further, a pair of gusset plates 42 is fixed between the upper and lower flanges 16 and 17 of the long side floor beam 14 by welding or the like so as to sandwich the joint portion 30 and the extension portion 41. Are also abutted and welded to the web 18 of the long side floor beam 14.

Here, each gusset plate 42 and the extending portion 41 are integrally formed by a U-shaped reinforcing member 40 produced by bending a sheet metal having the same thickness as the long side floor beam 14. . A thick reinforcing plate 43 is straddled between the extending portion 41 and the joining portion 30, and a screw hole 44 is formed in the reinforcing plate 43 at a position corresponding to the notch 31.
Are drilled.

An upper portion of an anchor bolt 50 that penetrates the notch 31 of the joint 30 is screwed into the screw hole 44. The anchor bolt 50 is the same as the anchor bolt 19 (FIG. 1) used when joining the four corners of the building unit 10 to the foundation 60, and is securely fixed to the joint 30 by a nut 51 screwed from above. ing.

On the other hand, on a foundation 60 on which the building unit 10 is placed, a sheath tube 61 is embedded in advance at a position corresponding to the anchor bolt 50.
The grout material 62 is injected into the inside,
The anchor bolt 50, the grout material 62,
The sheath tube 61 and the foundation 60 are integrally joined, that is, the building unit 10 and the foundation 60 as a structure are joined to each other via the anchor bolt 50.

In the present embodiment, the building unit 10 transported from the factory to the construction site of the building is lifted by a crane or the like and placed on the foundation 60. When the building unit 10 is lifted, the anchor bolt 50 is moved. It is attached to the building unit 10 in advance together with other anchor bolts 19.

On the foundation 60 side, when casting concrete, the sheath tube 61 is previously arranged in the formwork, whereby the sheath tube 61 is buried in the foundation 60. The grout material 6 is placed in the sheath tube 61 immediately before the building unit 10 is placed.
Inject 2.

After the grout material 62 is injected, the building unit 10 is placed on the foundation 60, and the lower side of the anchor bolt 50 is buried in the grout material 62. As described above, when the grout material 62 is hardened, the portion immediately below the stud 21 is joined to the foundation 60, so that the stud 21 functions as a structural material having a sufficient strength.

In FIG. 3, there is a gap between the building unit 10 and the foundation 60. This is because four corners of the building unit 10 are placed on the foundation 60 via height level adjusting bolts. It is.

According to this embodiment, the following effects can be obtained. 1) Since the joint 30 is provided immediately below the stud 21 of the subframe 20 and the joint 30 is joined to the foundation 60, the stud 21 acts as a structural material to improve the rigidity of the building unit 10. Can be. Therefore, the building unit 10 can be reliably reinforced without adding the sub-frame 20, and swaying during a storm can be reduced.

2) Since the joint 30 of the building unit 10 and the foundation 60 are joined via the anchor bolts 50, the joining operation is performed by joining the four corners of the building unit 10 to the foundation 60 via the anchor bolts 19. And at the same time, and can be performed efficiently.

3) In this joining operation, since the anchor bolts 50 are attached to the building unit 10 in advance, the lower side of the anchor bolts 50 is simultaneously placed on the foundation 60 of the building unit 10 and the grout material in the sheath tube 61 is cut. Thus, the work efficiency can be further improved. Also, the joint between the foundation 60 and the joint 30 is fixed by the anchor bolt 5 by hardening the grout material 62.
0 can be reliably performed.

4) Since the studs 21 are erected on the upper flange 16 of the long-side floor beam 14, there is no stud 21 in the opening space of the long-side floor beam 14 made of a channel material. Therefore, in the lower flange 17, the screwing operation of the nut 51 to the anchor bolt 50 can be easily performed by using the wide opening space.

5) Further, since the extending portion 41 extending to the opening side of the channel material is provided at the portion of the lower flange 17 where the joining portion 30 is provided, the screw of the nut 51 is further turned on the opening side. Can be performed, and the screwing operation can be further facilitated.

6) A joining portion 30 is provided between the upper and lower flanges 16 and 17 of the long side floor beam 14.
Since the pair of gusset plates 42 are provided so as to be sandwiched from the longitudinal direction of No. 4, the periphery of the joint 30 can be reliably reinforced, and even if the studs 21 are erected on the upper flange 16, the upper flange 16 is Deformed, long side floor beam 1
There is no worry that the whole 4 will buckle.

7) At this time, since each gusset plate 42 and the extending portion 41 are formed integrally with the reinforcing member 40, the extending portion 41 can also be reinforced reliably. In addition, the gusset plates 42 and the extension portions 41 need only be welded after the reinforcing members 40 are fitted, and can be easily provided on the long-side floor beams 14.

8) Further, since the reinforcing plate 43 is provided between the joining portion 30 and the extending portion 41, the joining portion 3
0 and the extension 41 can be further reinforced,
Buckling can be more reliably prevented.

9) Also, by joining the joint 30 and the foundation 60 to reinforce the building unit 10, the number of subframes 20 used in the entire building can be reduced. That is, for example, in the building unit shown in FIG. 5A, the number of subframes 20 can be reduced to one, and the cost of members can be reduced.

[Second Embodiment] In a building unit 10 according to a second embodiment of the present invention, as shown by a two-dot line in FIG. 1, an anchor bolt 50, that is, a joint 30 (see FIG. 2) is a stud. The long side floor beam 14 is provided at a position slightly shifted from the position where the 21 is erected to the center in the longitudinal direction.

Therefore, in the case of such a configuration, the following effects are obtained in addition to the effects 1) to 9) described above. 10) In the long-side floor beam 14, the position where the joint 30 is provided and the position where the stud 21 is erected are slightly shifted in the longitudinal direction of the long-side floor beam 14. The side floor beams 14 are reinforced at two different portions, a portion reinforced by the studs 21 being erected and a portion reinforced by providing the joining portion 30 and joining to the lower foundation 60. it can. Therefore, the long-side floor beam 14 can be remarkably hardly bent, and its deformation performance can be improved.

It should be noted that the present invention is not limited to the above embodiments, but includes other configurations capable of achieving the object of the present invention, and the following modifications are also included in the present invention. For example, in each of the above-described embodiments, the sub-frame 20 is configured to include the cross member 22 and the brace 23. However, the sub-frame according to the present invention is not limited to this, and may be configured as shown in FIG. And a type having a lattice (truss) structure.

The reinforcing structure around the joint 30 is arbitrary, and the shapes of the reinforcing plate 43, the gusset plate 42, and the like can be appropriately changed in the implementation.

Further, in each of the above embodiments, the studs 21 are erected on the upper flange 16 of the long-side floor beam 14, but the studs 21 are erected on the lower flange 17 so that the upper flange 16 is erected. It may penetrate, and it is optional.

Then, the anchor bolts 50 are previously
The present invention includes the case where the projection is provided from zero. However, in such a case, the notch 31 is preferably formed in a long hole shape so that the anchor bolt 50 and the notch 31 can be easily inserted, and the screw hole 44 needs to be a through hole. is there. That is, a structure is provided in which a plurality of nuts 51 are prepared, and the joints 30 and the like are sandwiched between the nuts 51 from above and below.

The anchor bolt 50 may not be used. For example, the lower end of the stud 21 may be
7 and project from the base 6 directly.
It may be embedded in 0.

[0044]

As described above, according to the present invention,
By joining the joint provided at the position where the stud is erected to the structure below, the stud acts as a structural material and the rigidity of the building unit improves, so the building unit can be installed without adding a subframe. This has the effect that it can be reinforced reliably.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partially broken perspective view showing a main part of the embodiment.

FIG. 3 is a longitudinal sectional view showing a main part of the embodiment.

FIG. 4 is a plan view schematically showing a conventional technique.

FIG. 5 is a front view schematically showing a plurality of prior arts.

[Explanation of symbols]

 Reference Signs List 10 Building unit 14 Long side floor beam as floor beam 16 Upper flange 17 Lower flange 20 Subframe 21 Stud 30 Joint 40 Reinforcement member 41 Extended portion 42 Gusset plate 43 Reinforcement plate 50 Anchor bolt 60 Basic structure 61 sheath tube 62 grout material

Claims (7)

[Claims] 1. A building unit reinforced by a subframe including a stud, wherein a joint portion joined to a lower structure is provided at a position corresponding to the stud. A building unit, characterized in that: 2. The building unit according to claim 1, wherein the structure is a foundation, and the foundation and the joint are anchored such that an upper side is attached to the joint and a lower side is embedded in the foundation. A building unit characterized by being bolted together. 3. The building unit according to claim 2, wherein the anchor bolt is attached to the joint in advance, and a sheath tube into which the anchor bolt is inserted is buried in the base in advance, and the sheath tube is embedded in the sheath tube. A building unit characterized by infused grout. 4. The building unit according to claim 3, wherein the stud is erected on an upper flange of a floor beam made of a channel material, and the joint is provided on a lower flange of the floor beam. A building unit, characterized in that a portion of the lower flange where the joint is provided is provided with an extending portion extending toward the opening side of the channel material. 5. The building unit according to claim 4, wherein a pair of gusset plates are provided between upper and lower flanges of the floor beam so as to sandwich the joint from the longitudinal direction of the floor beam. A building unit, wherein the gusset plate and the extending portion are formed by an integral reinforcing member. 6. The building unit according to claim 4, wherein a reinforcing plate is straddled between a portion of the lower flange where the joint is provided and the extension. Building unit 7. The building unit according to claim 1, wherein the stud is erected on a floor beam, and the joint is provided on the floor beam, and the joint is provided. A building unit, wherein a position where the stud is erected and a position where the stud is erected are slightly shifted in a longitudinal direction of the floor beam.