JP2001164656A - Beam structure of building unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily span beams between mutually opposing girders. SOLUTION: In this beam structure of a building unit 10 which spans floor beams 13 between mutually opposing floor girders 12, a C-shaped steel with lip is used as the floor girders 12, this C-shaped steel with lip is selected from among a plurality off kinds of steels which are provided with various plate thicknesses and have the same outer shape dimension regardless of plate thicknesses for use, and the floor beam 13 is attached to an outer face of the C-shaped steel with lip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a beam structure of a building unit.

[0002]

2. Description of the Related Art Conventionally, as a beam structure of a building unit, as described in Japanese Patent Application Laid-Open No. 10-299173, when a small beam is bridged between opposed large beams, a C beam is used as the large beam. is there. Even if the external dimensions of the building unit are the same, if the span of the opposite girder is long, or if the lower-floor building unit that constitutes the high-rise unit building should have high load-bearing capacity, the C-beam that constitutes the girder It is necessary to use varieties with a large thickness.

In the prior art, opposing girder beams are arranged so that the inner surfaces of the C-section steel webs (surfaces on the side where the flanges extend from the web) face each other, and the small beams are interposed between the inner surfaces of the webs of both girder beams. You are going to.

[0004]

However, in the prior art, the distance between the beams formed by the inner surfaces of the webs of the opposite large beams fluctuates due to a change in the thickness of the web. For this reason, even in a building unit in which the thickness of the C-shaped steel constituting the opposite beam is changed, a mounting bracket is interposed between the beam and the inner surface of the web of the beam in order to share a beam of the same length. In addition, it is necessary to absorb the change in the thickness of the web, which complicates parts management and construction.

[0005] An object of the present invention is to easily bridge small beams between opposed large beams.

[0006]

According to a first aspect of the present invention, there is provided a beam structure of a building unit for bridging a small beam between opposing large beams, wherein a C-shaped steel having a lip is used as the large beam. With various plate thicknesses as
In addition, one selected from a plurality of types having the same outer dimensions regardless of the sheet thickness is used, and the small beam is attached to the outer surface of the C-shaped steel with lip. .

According to a second aspect of the present invention, there is provided a beam structure of a building unit for bridging a floor girder between a plurality of columns and bridging a floor girder between opposing floor girders. C-shaped steel with lip, and as the C-shaped steel with lip, selected from a plurality of varieties having various plate thicknesses and having the same external dimensions regardless of the plate thickness, A floor beam is attached to the outer surface of the lipped C-shaped steel.

The present invention according to claim 3 provides the invention according to claim 1 or 2
In the described invention, the beam is further attached to an outer surface of a lip-shaped C-shaped steel web.

The present invention described in claim 4 is the first or second aspect of the present invention.
In the described invention, the beam is further attached to an outer surface of a lip of a lip-shaped C-shaped steel.

[0010]

According to the first and second aspects of the present invention, the following effects are obtained. The outer dimensions of the lipped C-shaped steel constituting the opposing girders (floor girders) are the same regardless of the plate thickness. Therefore,
Even if the thickness of the girder is increased or decreased while the external dimensions of the building unit are the same, the distance between the beams formed by the webs, lips, and the like of the opposing girder does not change. For this reason, when a small beam (floor beam) is interposed between opposing large beams between building units having different thicknesses of the large beams, a mounting bracket for absorbing a change in the thickness of the large beams is used. There is no need to intervene between the beam and the girder. Therefore, a beam having a fixed length or a beam having a fixed length in which a mounting bracket is provided in advance on the beam can be directly bridged between girders having different plate thicknesses, and parts management and construction can be simplified. .

[0011] When the installation interval of the opposing girders is the same, the outer diameter of the flange of the C-beam with lip constituting the girders is the same even if the thickness is increased or decreased. ) Can be realized by directing the beam on either side of the mounting side of the beam (the webs of both beams are faced to each other, and a beam is provided between the webs,
The lips of the two girders face each other and a small beam is provided between the lips, or the web and lip of the two girders are faced and a small beam is provided between the web and the lip. Versatility can be improved.

By using a C-shaped steel with a lip for the girder, the second moment of area and the second polar moment of the area are improved and the bending of the girder is improved as compared with the case of using a C-shaped steel having the same outer dimensions. Strength and torsional strength can be improved.

[0013] By using a C-beam with a lip for the girder, the figure core of the girder is set closer to the center line passing through the center in the flange width direction than in the case of using a C-beam with the same outer dimensions. At the juncture between the girder and the column, the girder of the girder can be closer to the girder of the column. And the structural strength of the building unit can be improved.

According to the third aspect of the present invention, the following operations are provided. The small beams are attached to the outer surface of the web of the lipped C-shaped steel constituting the girder with bolts or the like, so that the lip side opening of the lipped C-shaped steel faces the outside of the building unit, The workability of attaching small beams can be improved, for example, by easily putting a hand into the bolt attaching portion on the inner surface side of the web from the lip side opening.

According to the fourth aspect of the invention, the following operation is provided. Since the small beam is attached to the outer surface of the lip of the C-shaped steel with lip constituting the large beam, the lip side opening of the C-shaped steel with lip is formed at the position where the small beam is attached to the large beam. Closed by the joints of the beams, the cross-sectional strength of the C-shaped steel with lip can be improved.

[0016]

FIG. 1 is a perspective view showing a building unit according to a first embodiment. FIG. 2 shows an example in which a lip of a floor girder is directed to the outside of the unit. FIG. FIG. 3B is a front view showing a mounting state of the beams, FIG. 3B is a perspective view showing a state before the mounting of the floor girders and the floor girders, and FIG. 3 shows an example of mounting the webs of the floor girders to the outside of the unit; (A) is a front view showing the attachment state of the floor girder and the floor girder, (B) is a perspective view showing the state before the attachment of the floor girder and the floor girder, FIG. 4 shows the shaped steel, and (A) is FIG. 5B is an end view showing the core of the C-shaped steel, FIG. 5B is an end view showing the core of the C-shaped steel with lip, FIG. 5C is a plan view showing the relationship between the column and the C-shaped steel with lip, FIG. Shows a second embodiment, and (A)
FIG. 2 is a plan view showing a building unit, and FIG. 2B is a front view showing an attached state of a large floor beam and a small floor beam.

(First Embodiment) (FIGS. 1 to 4) As shown in FIG. 1, a building unit 10 spans a floor girder 12 between lower ends of four pillars 11 and opposes a floor girder 1 opposite thereto.
This is a box-shaped frame structure constructed by bridging a floor beam 13 between the two. The floor girder 12 is butt-welded or bolted to the side surface of the column 11, and the floor girder 13 is butt-welded or bolted to the inner surface of the floor girder 12 to form a building floor.
The building unit 10 does not include a ceiling beam as a framing component on the upper end side of the pillar 11 and includes a ceiling frame 15 that is not a framing component.

In the building unit 10, the columns 11 are made of, for example, square steel pipes, the floor girders 12 are made of C-shaped steel with lips (web 12A, flange 12B, lip 12C), and the floor beams 13 are made, for example, at both ends of the square steel pipe. And a plate-like mounting bracket 14 is welded or bolted.

At this time, the floor girder 12 is selected from a plurality of types having various thicknesses and having the same outer dimensions (web height h, flange width b) (FIG. 2) regardless of the thickness.
Those selected according to the required structural strength of the building unit 10 and the like are used.

In the building unit 10, the floor girders 12
As shown in FIG. 2, the outer dimensions of the building unit 10 are constant irrespective of the plate thickness, and the building units 10 using the floor girders 12 having different plate thicknesses, as shown in FIG.
The distance L between the beams 2 and 12 becomes the same. Thus, within the building unit 10, each of the opposing floor girders 12 is faced by their webs 12A and their lips 1
When arranging so that 2C faces outward, the inter-beam distance L formed by the webs 12A of the opposing floor girders 12, 12 is constant irrespective of their plate thickness, and these floor girders 12,
A floor beam 13 having a length L can be inserted between the bridges 12 and bridged.

As a modification of the building unit 10, as shown in FIG.
2 are arranged such that their lips 12C face each other and their webs 12A face outward, the lips 12C of the opposing floor girders 12,
The beam distance L between the beams is constant irrespective of their thickness, and the floor beam 1 having a length L is provided between the floor beams 12.
3 can be inserted and bridged.

In the building unit 10, even if the webs 12A of the floor girders 12 face each other (FIG. 2), the lips 12C
(FIG. 3), the distance L between the beams into which the floor beams 13 are inserted is the same, and the same floor beams 13 can be bridged in any case. Therefore, the same floor beam 13 can be used regardless of the mounting posture of the floor beam 12 (the direction of the web 12A and the lip 12C).

Therefore, according to the present embodiment, the following operations are provided. The lip-shaped C-shaped steels constituting the opposing floor girders 12 have the same outer dimensions regardless of the sheet thickness. Therefore, while the outer dimensions of the building unit 10 are the same,
Even if the plate thickness of the floor girder 12 is increased or decreased, the distance between the beams formed by the webs, lips and the like of the opposing floor girders 12 does not change. For this reason,
A mounting bracket for absorbing a change in the thickness of the floor girders 12 when interposing the floor girders 13 between the opposing floor girders 12 between the building units 10 having different thicknesses of the floor girders 12. There is no need to intervene between the floor girders 12 and the floor girders 13. Therefore, the floor beam 13 having a certain length, or the floor beam 13 having the mounting bracket 14 provided in advance and having a predetermined length can be directly bridged between the floor girders 12 having different plate thicknesses. Can be simplified.

When the interval between the opposed floor girders 12 is the same, the outer dimensions of the flanges of the lipped C-beams constituting the floor girders 12 are the same even if the thickness is increased or decreased. Is the web (or lip) for each floor beam 1
3 can be realized in any direction with respect to the mounting side (the webs of both large beams 12 are opposed to each other, the floor small beams 13 are provided between the webs, and the lips of the large beams 12 are opposed to each other. Or a floor beam 13 may be provided between the lips, or the web and lip of both floor girders 12 may be faced and the floor beam 13 may be provided between the web and the lip. Versatility can be improved.

The use of the lip-shaped C-shaped steel for the floor girders 12 improves the second moment of area and the second moment of area as compared with the case where C-shaped steels having the same outer dimensions are used. The bending strength and torsional strength of the girder 12 can be improved.

By using the C-shaped steel with lip for the floor girders 12, the center A of the floor girders 12 in the flange width direction is different from the case where the C-shapes having the same outer dimensions are used. It is set near the passing center line, and at the joint between the floor girder 12 and the column 11, the center of the floor girder 12 can be closer to the center C of the column 11, and the force at the joint between the floor girder 12 and the column can be reduced. The flow can be made smooth, the twist of the floor girders 12 can be hardly transmitted to the columns 11, and the structural strength of the building unit 10 can be improved.

The small beam 13 is attached to the outer surface of the lip C-shaped steel web constituting the large floor beam 12 with bolts or the like, so that the lip-side opening of the lip C-steel can be built. The workability of attaching the floor beam 13 can be improved, for example, by facing the outside of the unit 10 and easily putting a hand into the bolt attaching portion on the inner surface side of the web from the opening on the lip side.

Since the floor beam 13 is attached to the outer surface of the lip of the C-shaped steel with a lip constituting the floor beam 12, the floor beam 13 is attached to the floor beam 12, The lip-side opening of the lipped C-shaped steel is closed by the joint of the floor beam 13, and the cross-sectional strength of the lipped C-shaped steel can be improved.

(Second Embodiment) (FIG. 5) The difference between the building unit 20 of the second embodiment and the building unit 10 of the first embodiment is that, as shown in FIG. For example, bathroom unit installation section 21
In addition to the four floor girders 12, a floor girder 22 made of C-shaped steel with a lip having the same cross-section as the floor girder 12 is provided between the opposing floor girder 12, 12 in order to form the like. The bathroom unit installation part 21 can be formed on one side of the floor girders 22. In the building unit 20, on one side of the floor beam 22, a floor beam 23 for forming a washing floor in contact with the bathroom unit installation part 21 is provided.
On the other side, there is provided a floor beam 24 for forming the floor of the dressing room.

Even in the building unit 20, similarly to the building unit 10 of the first embodiment, the distance L1 between the floor girder 12 and the floor girder 12 facing each other on one side of the floor girder 22 is equal to the floor girder 12, Irrespective of the thickness of the plate 22, the same floor small beam 23 of the length L1 can be inserted and bridged between the building units 20 having the same thickness of the floor girders 12, 22. Also, the floor girders 12 facing each other on the other side of the floor girders 22
And the distance L2 between the beams formed by the floor girders 22
Irrespective of the thickness of the building units 20, and the building units 20 in which the thickness of the floor girders 12, 22 are different from each other, the length L2
Can be inserted and bridged.

As shown in FIG. 5B, the mounting bracket 23 of the floor beam 23 is attached to the lip 12C on one side and the web 12 on the other side on both sides of the same position in the longitudinal direction of the floor beam 22.
At A, a mounting bracket 24A of the floor beam 24 is welded or bolted.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific structure of the present invention is not limited to this embodiment, and the design can be changed without departing from the scope of the present invention. The present invention is also included in the present invention. For example, in the embodiment of the present invention, the building unit may include a ceiling beam as a framing component material, in addition to the pillar, the floor girder, and the floor girder.

[0033]

As described above, according to the present invention, a small beam can be easily bridged between opposed large beams.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a building unit according to a first embodiment.

FIGS. 2A and 2B show an installation example in which a lip of a floor girder is directed to the outside of the unit, FIG. 2A is a front view showing an attachment state of a floor girder and a floor girder, and FIG. It is a perspective view which shows the state before attachment of a small beam.

FIGS. 3A and 3B show an example of installation in which the webs of the floor girders are directed to the outside of the unit, FIG. 3A is a front view showing the mounting state of the floor girders and the floor girders, and FIG. It is a perspective view which shows the state before attachment of a small beam.

4A and 4B show a section steel, FIG. 4A is an end view showing a C section steel core, FIG. 4B is an end view showing a lip C section steel core, and FIG. It is a top view which shows the diagram core relationship of C-shaped steel with a lip.

5A and 5B show a second embodiment, in which FIG. 5A is a plan view showing a building unit, and FIG. 5B is a front view showing an attached state of floor girders and floor girders.

[Description of Signs] 10 building unit 11 pillar 12 floor girder 12A web 12C lip 13 floor girder 20 building unit 22 floor girder 23, 24 floor girder

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2E125 AA03 AA04 AA13 AA14 AB05 AB10 AB16 AC15 AC16 AG03 AG12 AG43 AG57 BE10 CA05 CA90 EA33

Claims (4)

[Claims] 1. A beam structure of a building unit for bridging small beams between opposing girders, wherein the girders use C-shaped steel with lip, and the C-shaped steel with lip has various thicknesses; A building unit characterized by using one selected from a plurality of varieties having the same external dimensions regardless of the plate thickness, wherein the small beam is attached to the outer surface of the C-shaped steel with lip. Beam structure. 2. A beam structure of a building unit for bridging a floor girder between a plurality of columns and bridging a floor girder between opposing floor girders, wherein a C-shaped steel with a lip is used as the floor girder. The C-shaped steel with lip is selected from a plurality of varieties having various thicknesses and having the same outer dimensions regardless of the thickness, and the floor beam is provided with the lip. A beam structure of a building unit, which is attached to an outer surface of a C-shaped steel. 3. The beam structure of a building unit according to claim 1, wherein the beam is attached to an outer surface of a lip C-shaped steel web. 4. The beam structure of a building unit according to claim 1, wherein the beam is attached to an outer surface of a lip of a C-shaped steel with a lip.