JP2022054699A - Building unit - Google Patents

Abstract

To provide a building unit mainly capable of storing a column supporting a structure of the building unit in a wall effectively or installing the column at a relatively free position.SOLUTION: In a building unit 1 including a ceiling frame 2 and a floor frame 3 installed apart in a vertical direction and coupled with a column 4, one or more thin type square pipe column 9 with square cylindrical shape having a thickness smaller than a width of ceiling beams 5,6 constituting the ceiling frame 2 is used for the column 4. The thin type square pipe column 9 is fixed to lower surfaces of the ceiling beams 5,6 with a bolt 11. The ceiling beams 5,6 are members having one lateral surface as an opened open cross section and a stiffener 41 may be mounted to a position where the thin type square pipe column 9 is mounted inside of the ceiling beams 5,6.SELECTED DRAWING: Figure 2

Description

The present invention relates to a building unit.

Some buildings such as houses are made of unit buildings. The unit building is a building that can be constructed in a short period of time by transporting a building unit manufactured in advance at a factory to a construction site and assembling it at the construction site (see, for example, Patent Document 1).

The existing building unit has a rectangular shape, and in the skeleton part, the upper ends of the four pillars (structural pillars) are connected in a rectangular shape with four ceiling beams, and the four pillars are connected. It has a unit frame with a box rigid frame structure in which the lower ends are connected in a rectangular shape by four floor beams.

Japanese Unexamined Patent Publication No. 2018-031220

However, in the existing building unit, since the unit frame uses large columns that are thicker than the width of the ceiling beams and floor beams, it is difficult to fit the columns well in the wall, and there are four structural columns. The pillar could not be installed in any position with respect to the unit frame.

Therefore, the main object of the present invention is to contribute to the improvement of the above-mentioned problems.

In response to the above problems, the present invention
It is a building unit in which the ceiling frame and the floor frame are separated vertically and connected by pillars.
For the pillar, at least one thin square pipe pillar having a square cylinder shape having a thickness smaller than the width of the ceiling beam constituting the ceiling frame is used.
The thin square pipe column is characterized in that it is bolted to the lower surface of the ceiling beam.

According to the present invention, according to the above configuration, the pillars supporting the structure of the building unit can be well accommodated in the wall, and the pillars can be installed at relatively free positions.

It is an overall perspective view of the building unit which concerns on embodiment of this embodiment. It is the whole front view of the thin square pipe pillar used for the building unit of FIG. 2 shows the upper end portion of the thin square pipe column of FIG. 2, where FIG. 2A is a partially enlarged view and FIG. 2B is a side view of FIG. 2A. It should be noted that (a) is a view of (b) viewed from the direction of the arrow line of sight. 2 shows a lower end portion of the thin square pipe pillar of FIG. 2, where FIG. 2A is a partially enlarged view and FIG. 2B is a side view of FIG. 2A. It should be noted that (a) is a view of (b) viewed from the direction of the arrow line of sight. The stiffener of FIG. 3 is shown, (a) is a partially enlarged front view, and (b) is a side view of (a). The stiffener of FIG. 4 is shown, (a) is a partially enlarged front view, and (b) is a side view of (a). It is an overall front view of a thin square pipe column different from FIG. 2 used in the case of mounting which supports only a vertical load. The upper end portion of the thin square pipe pillar of FIG. 7 is shown, (a) is a partially enlarged view, and (b) is a side view of (a). It should be noted that (a) is a view of (b) viewed from the direction of the arrow line of sight. FIG. 7 shows the lower end portion of the thin square pipe pillar, (a) is a partially enlarged view, (b) is a side view of (a), and (c) is a view showing a state when the building unit is deformed. be. It should be noted that (a) is a view of (b) viewed from the direction of the arrow line of sight. The stiffener of FIG. 8 is shown, (a) is a partially enlarged front view, and (b) is a side view of (a). 9 shows the stiffener, (a) is a partially enlarged front view, and (b) is a side view of (a). It is the whole perspective view of the building unit which concerns on another embodiment. It is the whole perspective view of the building unit which concerns on another embodiment.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 13 are for explaining each embodiment of this embodiment.
Of these, FIGS. 1 to 6 are examples of a building unit and a thin square pipe pillar, FIGS. 7 to 11 are examples of another thin square pipe pillar, and FIG. 12 is an embodiment of another building unit. FIG. 13 shows an embodiment of another building unit.

<Structure> Hereinafter, the configuration of this embodiment will be described.

Buildings such as houses are composed of unit buildings. In general, a unit building is a building that can be constructed in a short period of time by transporting a building unit manufactured in advance at a factory to a construction site and assembling it at the construction site. The building unit is formed in an almost rectangular parallelepiped shape.

The building unit of this embodiment may have the following configurations.

(1) As shown in FIG. 1 (see also FIGS. 2 to 4), in the building unit 1, the ceiling frame 2 and the floor frame 3 are arranged vertically separated from each other, and these are connected by pillars 4. It has a structure.
The pillar 4 is a thin cylindrical pipe pillar 9 having a thickness 8 (FIG. 3 (b)) smaller than the width 7 (FIG. 3 (b)) of the ceiling beams 5 and 6 constituting the ceiling frame 2. Is used at least one.
The thin square pipe pillar 9 is fixed to the lower surfaces of the ceiling beams 5 and 6 with bolts 11.

Here, the building unit 1 is a structure that is a constituent unit of the unit building, and is, for example, a box-shaped or a box-shaped one. Normally, the building unit 1 is manufactured in a factory using a large-scale manufacturing facility. There are steel-framed and wood-based building units 1, and the steel-framed building unit 1 has a metal unit frame 12 in its skeleton portion.

The ceiling frame 2 is a substantially horizontal metal frame that constitutes the ceiling portion of the unit frame 12 in the building unit 1, and in this embodiment, one having a substantially rectangular shape (rectangular shape or square shape) in a plan view. Formed as a component. Inside the ceiling frame 2, a plurality of ceiling joists 14 (extending in the short side direction X of the ceiling frame 2) along the surface of the ceiling frame 2 are parallel to each other with an interval (in the long side direction Y). Will be installed. A ceiling surface material 16 (FIG. 3B) is attached to the lower surface side of the ceiling frame 2 to form a ceiling surface.

The short side direction X is the first horizontal direction defining the building unit 1, and the long side direction Y is the second horizontal direction defining the building unit 1, in a direction orthogonal to the first direction. be. The short side direction X is the extension direction of the short side of the ceiling frame 2. Further, the long side direction Y is the extending direction of the long side of the ceiling frame 2.

The floor frame 3 is a substantially horizontal metal frame that constitutes the floor portion of the unit frame 12 in the building unit 1, and in this embodiment, one having a substantially rectangular shape (rectangular shape or square shape) in a plan view. Formed as a component. Inside the floor frame 3, a plurality of floor beams 17 (extending in the short side direction X of the floor frame 3) along the surface of the floor frame 3 are parallel to each other with an interval (in the long side direction Y). Will be installed in. A floor surface material is attached to the upper surface side of the floor frame 3 to form a floor surface.

The pillar 4 is a vertical metal member that supports the ceiling frame 2 from below, and is extended in the vertical direction Z. Then, in the case of the normal building unit 1, the ceiling frame 2 is supported on the floor frame 3 by the pillars 4. The pillar 4 is a structural pillar (structural pillar) having the strength required to support the building unit 1 or the ceiling frame 2. Therefore, a mere vertical member that does not become a structural column is excluded from the column 4 of this embodiment. Wall members 19 (FIG. 3 (b)) such as an inner wall and an outer wall are installed on the side surface of the unit frame 12, if necessary. The pillar 4 is hidden by the wall member 19.

In the unit frame 12 of this embodiment, for example, the ceiling frame 2 is manufactured as one complete part at the factory, and the floor frame 3 is manufactured as one complete part at the factory separately from the ceiling frame 2. The unit frame 12 is completed by connecting the ceiling frame 2 and the floor frame 3 in the state of separate parts at a factory (or a construction site) with pillars 4 and integrating them.

The ceiling beams 5 and 6 are metal horizontal members constituting the rectangular ceiling frame 2, and are provided in pairs in a direction orthogonal to each other. The paired ceiling beams 5 and 6 are arranged horizontally and parallel to the unit frame 12 having equal lengths to each other. In this embodiment, the ceiling frame 2 has a substantially rectangular shape in a plan view, and a pair of long ceiling beams 5 forming the long side of the ceiling frame 2 and a short ceiling beam forming the short side of the ceiling frame 2. It consists of 6 pairs.

In this embodiment, the ceiling frame 2 is integrally joined by welding or the like with the end of the short ceiling beam 6 directly abutted against the side surface of the end of the long ceiling beam 5. By directly joining the ends of the ceiling beams 5 and 6 in this way, the unit frame 12 has a beam-winning structure.

As shown in FIG. 2, each ceiling beam 5 and 6 has a length having a vertically oriented web portion 21 and laterally oriented upper and lower flange portions 22 and 23 extending laterally from the upper and lower edges of the web portion 21. It can be constructed of C-shaped steel with a uniform cross section on a scale. The upper and lower flange portions 22 and 23 have the same width dimension. The ceiling beams 5 and 6 can be joined to each other with the open portions of the C-shaped steel facing outward or inward as appropriate (all are facing outward in FIG. 1).

The width 7 of the ceiling beams 5 and 6 is the width 7 of the upper and lower flange portions 22 and 23.

The rectangular floor frame 3 is composed of floor beams 24 and 25. The floor beams 24 and 25 are metal horizontal members constituting the floor frame 3, and are provided in pairs in a direction orthogonal to each other. The paired floor beams 24 and 25 are arranged horizontally and parallel to the unit frame 12 having equal lengths to each other. In this embodiment, the floor frame 3 has a substantially rectangular shape in a plan view, and a pair of long floor beams 24 forming the long side of the floor frame 3 and a short floor beam forming the short side of the floor frame 3. It consists of 25 pairs.

In this embodiment, the floor frame 3 is integrally joined by welding or the like with the end of the short floor beam 25 directly abutted against the side surface of the end of the long floor beam 24. By directly joining the ends of the floor beams 24 and 25 in this way, the unit frame 12 has a beam-winning structure.

Each floor beam 24, 25 has a length having, for example, a vertically oriented web portion 26 and laterally oriented upper and lower flange portions 27, 28 extending laterally from the upper and lower edges of the web portion 26, as shown in FIG. It can be constructed of C-shaped steel with a uniform cross section on a scale. The upper and lower flange portions 27 and 28 have the same width dimension. The floor beams 24 and 25 can be joined to each other with the open portions of the C-shaped steel facing outward or inward as appropriate (all are facing outward in FIG. 1).

The width 7 of the floor beams 24 and 25 is the width 7 of the upper and lower flange portions 27 and 28. At this time, it is preferable that the upper and lower flange portions 22 and 23 of the ceiling beams 5 and 6 and the width 7 of the upper and lower flange portions 27 and 28 of the floor beams 24 and 25 all have the same dimensions. As a result, the ceiling beams 5 and 6 and the floor beams 24 and 25 have the same width 7.

Regarding the height dimensions of the web portions 21 of the ceiling beams 5 and 6 and the web portions 26 of the floor beams 24 and 25, in this embodiment, the web portions 21 of the ceiling beams 5 and 6 are the floor beams 24, Although it is larger (higher) than the web portion 26 of 25, the height dimensions of both may be the same, or conversely, the web portion 26 of the floor beams 24 and 25 may be raised.

The thickness 8 of the thin square pipe pillar 9 is not the wall thickness of the hollow thin square pipe pillar 9, but the external dimensions of the thin square pipe pillar 9 with respect to the inside and outside directions of the ceiling frame 2. It is the dimension of the width direction 32 orthogonal to the longitudinal direction 31 and the vertical direction Z of the ceiling beams 5, 6 (or the floor beams 24, 25) in the above. The longitudinal direction 31 and the width direction 32 of the ceiling beams 5 and 6 (and the floor beams 24 and 25) are relative to the ceiling beams 5 and 6 (and the floor beams 24 and 25) when the building unit 1 is installed horizontally. Hereinafter, the longitudinal direction 31 and the width direction 32 of the ceiling beams 5 and 6 (and the floor beams 24 and 25) will be described with reference to the direction.

The thin square pipe pillar 9 is a hollow pillar 4 having a square cylinder shape (square pipe shape) and a small cross section having a hollow rectangular cross section. The thinness of the thin square pipe pillar 9 means, for example, a state in which the thickness 8 of the thin square pipe pillar 9 is thinner than the width 7 of the ceiling beams 5 and 6 and the floor beams 24 and 25.

The thin square pipe column 9 has a pair of side surfaces (faces 33) parallel to the longitudinal direction 31 of the corresponding ceiling beams 5, 6 (and floor beams 24, 25) and the corresponding ceiling beams 5, 6 (and floor beams 24). , 25) is a long hollow member having a uniform cross section extending in the vertical direction Z and having a uniform wall thickness, formed by four side surfaces having a pair of side surfaces (surfaces 34) parallel to the width direction 32.

In the thin square pipe column 9, the surface 33 in the longitudinal direction 31 has a rectangular cross section wider than the surface 34 in the width direction 32, and the width of the surface 34 in the width direction 32 is described above. The thickness of the thin square pipe pillar 9 is 8.

The thin square pipe column 9 is not a vertical member (wall mounting member) for simply mounting a wall member 19 or the like, for example, a stud, but as described above, withstands at least a vertical load acting on the building unit 1. It is installed on the unit frame 12 as a structural column (load support member) having such strength. However, the thin square pipe column 9 serving as a load-bearing member may have a function as a stud or other functions.

The pillar 4 (normal pillar 35, for example, FIG. 13) normally used for a general building unit 1 (unit frame 12) has a rectangular cross section (for example, a square cross section) larger than that of the thin square pipe pillar 9. Since it has a large square pipe shape, the thin square pipe pillar 9 can be referred to as a small cross-section square pipe pillar, and the normal pillar 35 can be referred to as a large cross-section square pipe pillar.

The large pillar 4 (normal pillar 35) normally used for the building unit 1 has a larger thickness in the inner and outer directions of the building unit 1 than the width 7 of the ceiling beams 5 and 6 (and the floor beams 24 and 25). On the other hand, the thin square pipe column 9 is clearly distinguished from each other in that the thickness 8 is suppressed to be smaller than the width 7 of the ceiling beams 5 and 6 (and the floor beams 24 and 25).

When the normal pillar 35 is used for the building unit 1, the joint piece 37 is welded and fixed to the side surface of the upper end portion and the lower end portion of the normal pillar 35, and the ceiling beams 5 and 6 and the floor are fixed to the joint piece 37. Since the beams 24 and 25 are attached by welding or bolts, usually one pillar 35 is always installed for each of the four corners 38 of the ceiling frame 2 and the floor frame 3. ..

Therefore, these four ordinary pillars 35 have a structure that cannot be easily installed at any position other than the corner portion 38 of the unit frame 12 (ceiling frame 2 and floor frame 3). That is, the four normal pillars 35 do not have a degree of freedom in arrangement. Since the normal pillar 35 is thicker than the width 7 of the ceiling beams 5 and 6 (and the floor beams 24 and 25), the plan shape of the joint piece 37 is the ceiling beams 5 and 6 (and the floor beams 24 and 25). The shape is such that it spreads from the side of the floor beams 24, 25) toward the side of the normal pillar 35.

Further, since the four ordinary pillars 35 are located at the four corners 38 of the ceiling frame 2 and the floor frame 3, in each corner 38, the ceiling frame 2 and the floor frame 3 are connected to the ceiling beams 5 and 6. , And the floor beams 24 and 25 are not directly joined to each other, and the structures are separated from each other.

Therefore, in the normal building unit 1 (unit frame 12), the ceiling beams 5, 6 and the floor beams 24, 25 stop at the positions of the side surfaces of the normal pillars 35, and the normal pillars 35 are the ceiling beams 5, 6 and the floor. It has a so-called pillar-winning structure that penetrates between the beams 24 and 25 up and down. On the other hand, as shown in FIG. 1, the above-mentioned beam-winning structure is a thin square pipe so that the thin square pipe pillar 9 does not penetrate vertically between the ceiling beams 5 and 6 and the floor beams 24 and 25. The end of the pillar 9 is covered with ceiling beams 5 and 6 and floor beams 24 and 25.

At least one of the thin square pipe columns 9 of this embodiment is always present for the building unit 1 (unit frame 12). In the simplest case, for example, in the normal building unit 1 (unit frame 12), one to four normal pillars 35 of the corner portion 38 are replaced with one or a plurality of thin square pipe pillars 9, respectively. It is possible to make it a structure.

The lower surface of the ceiling beams 5 and 6 is (the lower surface of) the lower flange portion 23 of the ceiling beams 5 and 6. Further, the upper surface of the floor beams 24 and 25 is the upper flange portion 27 (upper surface) of the floor beams 24 and 25.

The bolt 11 has the upper end of the thin square pipe pillar 9 abutting against the lower surfaces of the ceiling beams 5 and 6 from below, and these (the upper end of the thin square pipe pillar 9 and the lower surface of the ceiling beams 5 and 6). ), They are attached so as to be fastened and fixed in the vertical direction Z. Further, in this embodiment, the bolt 11 has the lower end portion of the thin square pipe pillar 9 abutting against the upper surfaces of the floor beams 24 and 25 from above, and these (the lower end portion of the thin square pipe pillar 9 and the floor). These can be attached so as to be fastened and fixed in the vertical direction Z between the upper surfaces of the beams 24 and 25). The specific mounting structure of the thin square pipe column 9 will be described later. A high-strength bolt is used for the bolt 11. The bolt 11 is supposed to extend in the vertical direction Z. Nuts, washers, and the like are appropriately used for fixing with bolts 11.

(2) Stiffener As shown in FIG. 5, the ceiling beams 5 and 6 are members having an open cross section with one side open.
Inside the ceiling beams 5 and 6, the stiffener 41 may be attached at a position where the thin square pipe pillar 9 is attached.

Here, one side surface of the ceiling beams 5 and 6 is an open side surface (open surface) opposite to the web portion 21 in the case of the ceiling beams 5 and 6 made of C-shaped steel as described above. Become. The inside of the ceiling beams 5 and 6 is the internal space of the ceiling beams 5 and 6. The stiffener 41 is installed so as not to protrude from the internal space of the ceiling beams 5 and 6.

Similarly, as shown in FIG. 6, the floor beams 24 and 25 are members having an open cross section with one side surface open, and the positions where the thin square pipe columns 9 are attached are inside the floor beams 24 and 25. The stiffener 42 may be attached to the floor. The stiffener 42 of the floor beams 24 and 25 is substantially the same as the stiffener 41 of the ceiling beams 5 and 6.

One side surface of the floor beams 24 and 25 is an open side surface (open surface) opposite to the web portion 26 in the case of the floor beams 24 and 25 made of C-shaped steel as described above. The inside of the floor beams 24 and 25 is the internal space of the beam. The stiffener 42 is installed so as not to protrude from the internal space of the floor beams 24 and 25.

The position where the thin square pipe pillar 9 is attached is the position where the thin square pipe pillar 9 is installed with respect to the longitudinal direction 31 of the ceiling beams 5 and 6 (and the floor beams 24 and 25 constituting the floor frame 3) constituting the ceiling frame 2. That is.

The stiffeners 41 and 42 are metal members (reinforcing plates) that transmit structural stress from the thin square pipe column 9 to the entire cross section of the ceiling beams 5 and 6 and the floor beams 24 and 25 having an open cross-sectional shape. .. The stiffeners 41 and 42 are composed of members separate from the ceiling beams 5, 6 and the floor beams 24 and 25, and are attached to and integrated with the ceiling beams 5, 6 and the floor beams 24 and 25. The stiffeners 41 and 42 are attached to the ceiling beams 5 and 6 and the floor beams 24 and 25 in advance before attaching the thin square pipe column 9 to the unit frame 12.

When the thin square pipe pillar 9 is attached to the ceiling beams 5 and 6, the stiffener 41 is linear with respect to each of the surfaces 34 on both sides of the thin square pipe pillar 9 facing the width direction 32 in the vertical direction Z. It is preferable to provide a pair at the inner positions of the continuous ceiling beams 5 and 6 (FIG. 3). As the stiffener 41, it is preferable to use a thin square pipe column 9 having a wall thickness of substantially the same as or thicker than that of the surface 34 facing the width direction 32.

Similarly, when the thin square pipe pillar 9 is attached to the floor beams 24 and 25, the stiffener 42 is vertically Z with respect to each of the surfaces 34 on both sides of the thin square pipe pillar 9 facing the width direction 32. A pair may be provided at the inner positions of the floor beams 24 and 25 that are continuous in a straight line (FIG. 4). It is preferable to use a stiffener 42 having a wall thickness of substantially the same as or thicker than that of the surface 34 of the thin square pipe column 9 facing the width direction 32.

The stiffener 41 is a vertical surface orthogonal to the web portions 21 of the ceiling beams 5 and 6 and the upper and lower flange portions 22 and 23. Similarly, the stiffener 42 can be a vertical surface orthogonal to the web portions 26 of the floor beams 24 and 25 and the upper and lower flange portions 27 and 28.

The stiffeners 41 and 42 have substantially the same height as the distance between the inner surfaces of the upper and lower flange portions 22 and 23 of the ceiling beams 5 and 6 and the upper and lower flange portions 27 and 28 of the floor beams 24 and 25, and the upper and lower sides. The flange portions 22, 23 and the flange portions 27, 28 have a width substantially equal to or smaller than the width 7, and are installed inside the ceiling beams 5, 6 and the floor beams 24, 25.

At this time, in the stiffeners 41 and 42, one of the side edges and the upper and lower edges are the web portions 21 of the ceiling beams 5 and 6, the upper and lower flange portions 22, 23, and the web portions of the floor beams 24 and 25. It is installed so as to make line contact with the 26 and the upper and lower flange portions 27 and 28, respectively. The widths of the stiffeners 41 and 42 are almost the same as the thickness 8 of the thin square pipe column 9.

The corners between the web portions 21 of the ceiling beams 5 and 6 and the upper and lower flange portions 22 and 23, and the corner portions between the web portions 26 and the flange portions 27 and 28 of the floor beams 24 and 25. Squared portions may be formed at the upper and lower corner portions of the stiffeners 41 and 42 that are in contact with each other.

Then, one side edge portion of the stiffeners 41 and 42 is welded and fixed to at least the inner surface of the web portions 21 and 26. Further, the upper and lower edges of the stiffener 41 may be welded and fixed to the upper and lower flange portions 22 and 23 and the upper and lower surfaces of the flange portions 27 and 28.

(3) Attached plate The attached plate 51 may be attached to the stiffener 41 so as to be in contact with the lower surfaces of the ceiling beams 5 and 6 from above.

Here, the lower surface of the ceiling beams 5 and 6 is the flange portion 23 on the lower side of the ceiling beams 5 and 6. The attachment plate 51 is installed on the upper surface of the lower flange portion 23.

Further, the stiffener 42 may be provided with a supporting plate 52 that is brought into contact with the upper surfaces of the floor beams 24 and 25 from below. The upper surface of the floor beams 24 and 25 is the flange portion 27 on the upper side of the floor beams 24 and 25. The attachment plate 52 is installed on the lower surface of the upper flange portion 27. The splicing plate 52 is substantially the same as the splicing plate 51.

The splicing plates 51 and 52 partially reinforce the flange portions 23 on the lower surfaces of the ceiling beams 5 and 6 having an open cross section and the flange portions 27 on the upper surfaces of the floor beams 24 and 25 to form a thin square pipe column 9. It is a metal member (reinforcing plate) for strengthening the joint portion with the ceiling beams 5 and 6 and the floor beams 24 and 25. The supporting plates 51 and 52 are preferably thicker than the flange portions 23 on the lower surfaces of the ceiling beams 5 and 6 having an open cross section and the flange portions 27 on the upper surfaces of the floor beams 24 and 25.

The supporting plates 51 and 52 are preferably provided on both the lower surfaces of the ceiling beams 5 and 6 and the upper surfaces of the floor beams 24 and 25, but depending on the situation, only one of them may be provided.

The attachment plates 51 and 52 are made of members separate from the stiffeners 41 and 42, and are attached to and integrated with the stiffeners 41 and 42.

When a pair of stiffeners 41 and 42 is provided, the attachment plates 51 and 52 are integrated with each of the pair of stiffeners 41.

The supporting plates 51 and 52 have a flat surface parallel to the flange portions 23 on the lower side of the ceiling beams 5 and 6 and the flange portions 27 on the upper side of the floor beams 24 and 25, and are arranged in contact with them.

The supporting plates 51 and 52 have substantially the same width dimension as the stiffeners 41 and 42 with respect to the width direction 32, and the width dimension of the surface 33 in the longitudinal direction 31 in the thin square pipe column 9 in the longitudinal direction 31 (approximately a pair). It has a length dimension longer than the distance between the stiffeners 41), and is attached to the pair of stiffeners 41, 42 so as to protrude from the pair of stiffeners 41, 42 on both sides in the longitudinal direction 31.

The side plate 51, which is in contact with the corner portion between the web portion 21 and the flange portion 23 of the ceiling beams 5 and 6, and the corner portion between the web portion 26 and the flange portion 27 of the floor beams 24 and 25. A squared portion may be formed on the edge portion of the 52.

The splicing plate 51 and the splicing plate 52 are previously attached to the stiffener 41 and the ceiling beams 5 and 6, and the stiffener 42 and the floor beams 24 and 25 before attaching the thin square pipe column 9 to the unit frame 12.

The supporting plates 51 and 52 are integrated with the stiffeners 41 and 42 by being welded and fixed to the upper or lower edge portions of the stiffeners 41 and 42.

Further, the supporting plates 51 and 52 are appropriately welded and fixed to the lower flange portions 23 of the ceiling beams 5 and 6 and the upper flange portions 27 of the floor beams 24 and 25 along the edges of the stiffeners 41 and 42. As a result, it is integrated with the ceiling beams 5 and 6 and the floor beams 24 and 25 (welded portions 55, FIGS. 5 and 6). At this time, it is preferable to perform welding around the corners of the edges of the stiffeners 41 and 42. Further, the auxiliary plate 51 is also welded and fixed to the web portions 21 and 26 of the ceiling beams 5 and 6 and the floor beams 24 and 25 along the edges of the stiffeners 41 and 42 (welded portions 56, FIG. 5). , FIG. 6).

When the splicing plates 51 and 52 are provided, the height of the stiffeners 41 and 42 is shortened by the thickness 8 of the splicing plate 51. As a result, the stiffeners 41 and 42 are indirectly fixed to the lower flange portions 23 of the ceiling beams 5 and 6 and the upper flange portions 27 of the floor beams 24 and 25 via the supporting plates 51 and 52. Become.

(4) Reinforcing piece As shown in FIG. 3, the reinforcing piece 61 may be attached to the outer surface of the upper end portion of the thin square pipe column 9.

Here, the outer surface of the thin square pipe pillar 9 (end) is the outer peripheral surface of the thin square pipe pillar 9, and is any of the four surfaces 33 and 34 constituting the side surface of the thin square pipe pillar 9. Or one or more.

Further, as shown in FIG. 4, the reinforcing piece 62 may be attached to the lower end portion of the thin square pipe column 9. The reinforcing piece 62 is substantially the same as the reinforcing piece 61.

The reinforcing pieces 61 and 62 are metal members (reinforcing members) that reinforce the ends of the thin square pipe columns 9. The reinforcing pieces 61 and 62 are formed of a member separate from the thin square pipe column 9, and are integrated with the thin square pipe column 9. The reinforcing pieces 61 and 62 are attached to the thin square pipe column 9 in advance before attaching the thin square pipe column 9 to the unit frame 12. The reinforcing pieces 61 and 62 are made to have a wall thickness almost the same as that of the thin square pipe column 9.

The reinforcing pieces 61, 62 may be formed as a plate, for example, to reinforce any one or more of the surfaces 33, 34 of the thin square pipe column 9, or, for example, almost all the ends of the thin square pipe column 9. As a ring-shaped or near-ring-shaped single C-shaped member that surrounds the circumference, the end can be reinforced over almost the entire circumference, or as multiple C-shaped members, the end is approximately half-circumfered from both sides. It is preferable to be able to reinforce by the degree.

The ring-shaped or C-shaped reinforcing pieces 61, 62 have an inner peripheral surface or an inner surface having substantially the same size and shape as all or part of the outer peripheral surface of the thin square pipe column 9, and the thin square pipe column 9 has an inner peripheral surface or an inner surface. It is a member (outer fitting member) having a shape that allows sliding contact fitting (outer fitting with almost no gap) to the end portion in the vertical direction Z.

In this embodiment, the reinforcing pieces 61 and 62 are made into a single or a plurality of C-shaped members so that they can be easily attached to the end of the thin square pipe column 9. The C-shaped reinforcing pieces 61, 62 have at least three or four or more portions of the thin square pipe column 9 in contact with the surface 34 in the width direction 32 and the portions in contact with each surface 33 in the longitudinal direction 31. Has a part of.

The portion in contact with the surface 33 in the longitudinal direction 31 is vertically divided into two at the central portion (divided portion 63), and the reinforcing pieces 61 and 62 (outer fitting member) are divided into two. With the two C-shaped members straddling the three surfaces 33 and 34 of the thin square pipe column 9 by the portion 63, or with a single C-shaped member (discontinuous member) straddling all four surfaces 33 and 34. It has become.

The reinforcing pieces 61 and 62 are integrated with the thin square pipe column 9 by welding and fixing the peripheral edge portion thereof to the thin square pipe column 9 in a state of being in contact with or externally fitted to the outer surface of the end portion of the thin square pipe column 9. Will be done. At this time, it is preferable that the reinforcing pieces 61, 62 and the thin square pipe column 9 or the like are firmly welded and joined by butt welding.

The reinforcing pieces 61 and 62 are attached to the thin square pipe column 9 so that the total thickness is equal to or smaller than the width 7 of the ceiling beams 5 and 6 and the floor beams 24 and 25.

(5) End plate An end plate 71 that is abutted from below on the lower surfaces of the ceiling beams 5 and 6 may be attached to the upper end of the thin square pipe column 9.

Here, the upper end portion of the thin square pipe pillar 9 is an opening surface (or an opening portion) of the upper end of the thin square pipe pillar 9.

Further, an end plate 72 that is abutted from above on the upper surfaces of the floor beams 24 and 25 may be attached to the lower end of the thin square pipe column 9. The lower end of the thin square pipe pillar 9 is an opening surface (or an opening) of the lower end of the thin square pipe pillar 9. The end plate 72 is substantially the same as the end plate 71.

The end plates 71 and 72 are metal members (end face closing members) that close the upper end and the lower end of the thin square pipe pillar 9 to reinforce the end of the thin square pipe pillar 9, and the ceiling beams 5 and 5. It is a member (fixing member) that secures and forms a portion (fixing portion 73) for fixing the thin square pipe column 9 with the bolt 11 to the lower surface of the floor beam 6 and the upper surface of the floor beams 24 and 25.

The end plates 71 and 72 are formed of a member separate from the thin square pipe pillar 9 and are integrated with the thin square pipe pillar 9. The end plates 71 and 72 are attached to the thin square pipe pillar 9 in advance before attaching the thin square pipe pillar 9 to the unit frame 12.

The end plates 71 and 72 have almost the same width dimension as the thickness 8 of the thin square pipe column 9 (including the reinforcing pieces 61 and 62 when the reinforcing pieces 61 and 62 are present), and are almost the same as the flange plates 51 and 52. It is a plate-shaped member having the same length, and in a state where the orientation is almost the same as that of the splicing plates 51 and 52, the flange portion 23 and the flange portion 27 are sandwiched between the splicing plates 51 and 52 vertically (almost). They are placed facing each other so that they overlap (completely). The end plates 71 and 72 are the same as or thicker than the flange portion 23 on the lower side of the ceiling beams 5 and 6 and the flange portion 27 on the upper side of the flange portion 27, and are almost the same as the plate plates 51 and 52. It is preferable to make it thick.

The end plates 71 and 72 of the ceiling beams 5 and 6 and the floor beams 24 and 25 are provided so that the portions (fixing portions 73, FIGS. 3 and 4) to be fixed to the thin square pipe column 9 with bolts 11 are secured and formed. It is attached to both sides in the longitudinal direction 31 in a state of protruding almost evenly (or in a state of protruding to almost the same length). The portions of the attachment plates 51 and 52 that protrude substantially evenly on both sides of the pair of stiffeners 41 and 42 in the longitudinal direction 31 are also fixed portions.

The fixing portion 73 of the end plates 71, 72, the flange portion 23 on the lower side of the ceiling beams 5, 6 and the flange portion 27 on the upper side of the floor beams 24, 25, and the splicing plates 51, 52 (a pair of stiffeners 41, 42). Bolt holes 75 extending in the vertical direction Z are formed through the positions corresponding to the portions protruding to both sides of the above. The bolt holes 75 match each other and communicate with each other up and down.

The end plates 71 and 72 are preferably welded and fixed to the thin square pipe column 9 (and also to the reinforcing pieces 61 and 62 if there are reinforcing pieces 61 and 62). At this time, it is preferable to firmly weld each other by butt welding.

The end plates 71 and 72 described above may be thickened (for example, more than the flange portions 23 and 27), the reinforcing pieces 61 and 62 may be attached to the ends of the thin square pipe columns 9, and the stiffeners 41 and 42 may be thickened. By attaching at least one or all of the attachment plates 51 and 52 of the meat and the use of the bolt 11 having a large diameter, the thin square pipe column 9 can be subjected to vertical load and horizontal load (vertical load and horizontal load). For example, it can be installed on the unit frame 12 so as to withstand both seismic force and wind pressure.

(6) Web surface As shown in another embodiment of FIGS. 7 (9), the end plates 71 and 72 at the end of the thin square pipe column 9 are provided with web surfaces 81 and 82 extending vertically. May be.

Here, the web surfaces 81 and 82 are reinforcing portions attached to and formed on the end plates 71 and 72 in order to reinforce the horizontal surfaces of the end plates 71 and 72 with respect to the vertical direction Z and the longitudinal direction 31. Is.

The web surfaces 81, 82 are integrally formed on one or both of the edges (extending in the longitudinal direction 31) of the end plates 71, 72 so as to extend upward or downward. It is preferable that the web surfaces 81 and 82 are continuously provided over the entire edge of the end plates 71 and 72. The heights of the web surfaces 81 and 82 are preferably constant over the entire area. It is preferable that the web surfaces 81 and 82 are formed, for example, at a height substantially equal to or higher than the width dimension of the end plates 71 and 72.

The web surfaces 81 and 82 are integrally formed with the edges of the end plates 71 and 72 by bending the edges of the plate materials constituting the end plates 71 and 72 at substantially right angles. Due to the web surfaces 81 and 82, the end plates 71 and 72 become a member (angle member) having an L-shaped cross section, a member having a U-shaped cross section, or the like (in this embodiment, the member having an L-shaped cross section). Yes).

The web surfaces 81 and 82 may be provided so as to extend in the direction opposite to the ceiling beams 5 and 6 and the floor beams 24 and 25 in the vertical direction Z, but in this embodiment, one edge of the end plates 71 and 72 may be provided. It extends from only the portion to the same side as the ceiling beams 5, 6 and the floor beams 24, 25, and overlaps (contacts or is attached) to the outer surface of the web portions 21, 26 of the ceiling beams 5, 6 and the floor beams 24, 25. It is provided as follows.

The web surfaces 81 and 82 are provided on the end plates 71 and 72, for example, when the thin square pipe column 9 supports only a vertical load. When the thin square pipe column 9 is installed so as to withstand both vertical load and horizontal load, the end plates 71 and 72 should not be provided with the web surfaces 81 and 82 as shown in FIGS. 2 to 4. You can do it.

In this case, as compared with the case where the thin square pipe column 9 as described above is installed so as to be able to withstand both the vertical load and the horizontal load, the end plates 71 and 72 are made thinner and as shown in FIG. 9 (c). In addition, small deformation of the end plates 71 and 72 in the vertical direction Z is allowed to some extent.

In the figure, the thin square pipe column 9 is tilted to the left due to a horizontal load, so that the end plate 72 is deformed so that the right side (opposite side) floats with the left end (tilted side) as the center. Then, the web surfaces 81 and 82 transmit the stress F (part or all) in the vertical direction Z generated at this time to the bolt 11 by the proof stress G in the surface direction (vertical direction Z or the longitudinal direction 31). Works like.

The wall thickness of the end plates 71 and 72 is reduced to the extent that the wall thickness is substantially the same as or thinner than, for example, the flange portions 23 and 27 of the ceiling beams 5 and 6 and the floor beams 24 and 25. Deformation of the end plates 71 and 72 is allowed by the amount of play in the longitudinal direction 31 between the bolt 11 and the bolt hole 75.

Therefore, at least the bolt holes 75 of the end plates 71 and 72 are made into round holes slightly larger than the diameter of the bolt 11 to be used so that a slight play is formed in the longitudinal direction 31, or the bolt 11 to be used. It is preferable that the hole is slightly longer in the longitudinal direction 31 with respect to the diameter of the hole.

When only the vertical load is supported by the thin square pipe column 9, the reinforcing pieces 61 and 62 may not be attached to the end of the thin square pipe column 9, or as shown in FIGS. 10 and 11, the stiffener At least one or all of such that the attachment plate 51 is not attached to 41 and 42 and the bolt 11 having a diameter smaller than that of FIGS. 2 to 4 is used is adopted.

Hereinafter, a specific embodiment of the building unit 1 (unit frame 12) provided with the thin square pipe pillar 9 will be described.

(7) As shown in the embodiment of FIG.
The ceiling frame 2 may be supported from below only by the thin square pipe pillar 9.

Here, the fact that the ceiling frame 2 is supported from below only by the thin square pipe pillar 9 means that the large pillar 4 (normal pillar 35) normally used for the building unit 1 is not used at all. The ceiling frame 2 is supported in the vertical direction Z only by the thin square pipe pillar 9. The building unit 1 having such a structure does not exist until now.

In the case of this embodiment, thin square pipe pillars 9 are installed at or around the four corners 38 of the ceiling frame 2 so that the ceiling frame 2 is supported from below only by the thin square pipe pillars 9.

Four thin square pipe columns 9 are installed at both ends of a pair of long ceiling beams 5 forming the long sides of the ceiling frame 2 or at positions in the vicinity thereof, one for each. The vicinity is near both ends, and is, for example, a relatively narrow range up to several thin square pipe columns 9.

Further, two thin square pipe columns 9 are installed in total for each pair of short ceiling beams 6 forming the short sides of the ceiling frame 2. As a result, the number of thin square pipe columns 9 becomes 6 in total.

The installation position of the thin square pipe column 9 with respect to the short ceiling beam 6 is at or near the end of one side of the pair of long ceiling beams 5, but for example, on the other side of the long ceiling beam 5. It may be an end portion or its vicinity, an end portion on a different side from each other or its vicinity thereof, or, as described later, a position of an intermediate portion or a central portion of a short ceiling beam 6.

The above is an example, and the number and positions of the thin square pipe columns 9 installed on the ceiling frame 2 and the floor frame 3 are not limited to the above.

In this embodiment, as described above, the ceiling frame 2 is supported by a total of six thin square pipe columns 9, but when the ceiling frame 2 is supported only by the thin square pipe columns 9, the thin angle is used. It is preferable to provide at least four pipe columns 9.

An appropriate number of thin square pipe columns 9 can be provided, for example, 5 or 6 or more, and by increasing the number of thin square pipe columns 9, the number of thin square pipe columns 9 can be increased accordingly. Since the bearing capacity for the ceiling frame 2 is increased, it is possible to increase the degree of freedom for the installation position of the thin square pipe column 9. Therefore, for example, by providing a large number of thin square pipe columns 9 to sufficiently secure and improve the bearing capacity for the ceiling frame 2, at least one or all of the four corner portions 38 of the ceiling frame 2 or their vicinity are provided. On the other hand, it is structurally possible to eliminate the need to install the thin square pipe pillar 9. In this embodiment, the thin square pipe columns 9 are one, two, one, two, one, two, three, four, among four corner portions 38 or the vicinity thereof. The number of each is about three.

In this embodiment, the floor frame 3 has substantially the same size and the same planar shape as the ceiling frame 2 (normal floor frame), and is almost completely the same as the ceiling frame 2 when viewed in a plane. They are arranged almost in parallel, separated from each other in the vertical direction, with their orientations aligned so that they overlap.

A plurality of thin square pipe columns 9 having the same length are interposed between the floor frame 3 and the ceiling frame 2, and the same number of thin square pipes are provided at the same positions of the floor frame 3 and the ceiling frame 2. The pillar 9 is attached. That is, the floor frame 3 and the ceiling frame 2 are vertically connected to each other at the same positions by all the thin square pipe columns 9.

In this case, as described above, a total of six thin square pipe columns 9 are installed at or near the four corners 38 of the ceiling frame 2, but the thin square pipes for the ceiling frame 2 and the floor frame 3 are installed. The number of pillars 9 to be installed and the mounting position are not limited to the above.

The number of thin square pipe columns 9 is at least one, and only the number required for the structure of the building unit 1 (for example, about four or more), both vertical load and horizontal load (for example, seismic force and wind pressure). It should be installed by a mounting method (Fig. 2) that can withstand the above.

When the number of thin square pipe columns 9 exceeding the structurally required number is installed in the building unit 1, the thin square pipe columns 9 exceeding the required number can withstand both vertical load and horizontal load. The mounting method may be such that the vertical load is supported (FIG. 7).

For example, the thin square pipe column 9 closest to the four corners 38 of the ceiling frame 2 is preferably mounted so as to withstand both vertical and horizontal loads. Further, for example, at least one of the thin square pipe columns 9 attached to the long ceiling beam 5 and at least one of the thin square pipe columns 9 attached to the short ceiling beam 6 are vertical. It is preferable to use a mounting method that can withstand both a load and a horizontal load. This allows the unit frame 12 to withstand horizontal loads in two orthogonal directions.

In this embodiment, all the thin square pipe columns 9 are mounted so as to be able to withstand both vertical and horizontal loads.

(8) As shown in other examples of FIG.
At least a part of the thin square pipe pillar 9 may have a lower end portion (non-connected lower end portion 91) that is not fixed to the floor frame 3.

Here, it is said that at least a part of the thin square pipe pillars 9 has a lower end portion that is not fixed to the floor frame 3, that is, at least one of the thin square pipe pillars 9 supporting the ceiling frame 2. The lower end portion is designed to be attached to other than the floor frame 3 constituting the same building unit 1.

In the building unit 1, the lower end portion of at least one thin square pipe pillar 9 is attached to the floor frame 3 of the same building unit 1 (connecting lower end portion). Alternatively, the building unit 1 should have at least one lower end of the connection. As a result, the ceiling frame 2 is connected to the floor frame 3 to establish the minimum structure as the building unit 1, so that the building unit 1 can be configured as in this embodiment.

The building unit 1 may support the ceiling frame 2 only by a thin square pipe pillar 9, or a large pillar 4 (normal pillar 35 or a large cross-sectional angle) normally used for a general building unit 1. It may have at least one pipe pillar) and at least one thin square pipe pillar 9.

In this embodiment, five thin square pipe columns 9 are attached to the four corners 38 of the ceiling frame 2 or in the vicinity thereof, and the lower ends (connecting lower ends) of the three thin square pipe columns 9 are attached. Part) is attached to the floor frame 3 of the same building unit 1, and the lower end portions (non-connected lower end portions 91) of the two thin square pipe columns 9 cannot be attached to the floor frame 3 of the same building unit 1. ing. Normally, the pillar 35 is not used.

The lower end portion (non-connected lower end portion 91) of the thin square pipe pillar 9 that is not fixed to the floor frame 3 of the same building unit 1 is directly attached to, for example, the foundation 93 or the ceiling frame 2 of the building unit 1 on the lower floor. Can be done. The thin square pipe pillar 9 directly joined to the foundation 93 or the ceiling frame 2 of the building unit 1 on the lower floor has the lower end portion (non-connected lower end portion 91) of the same building (longer than the connected lower end portion). By extending the unit 1 to the position of the lower surface (lower flange portion 28) of the floor frame 3, the foundation 93 and the building unit 1 on the lower floor can be attached to the ceiling frame 2.

Alternatively, for the thin square pipe pillar 9 that you want to use by aligning the lengths of all the thin square pipe pillars 9 to the same (same length) and lengthening them (as the unconnected lower end portion 91), at the lower end portion thereof. An extension member for a required length may be attached (or added) so that the length can be adjusted (extended).

If necessary, a reinforcing piece 62, an end plate 72, or the like can be attached to the lower end portion (non-connected lower end portion 91) of the thin square pipe column 9 that is not fixed to the floor frame 3 of the same building unit 1.

In this embodiment, the floor beam 24a on the long side of the ceiling frame 2 has a length of about half of the normal length, and the floor beam 25 on the short side of the ceiling frame 2 has a normal length. Is a small and irregular shape having a size and a planar shape of about half that of the ceiling frame 2 (small floor frame 3a). In this case, the floor beam 24a may have substantially the same length as the floor beam 25 or may be shorter than the floor beam 25.

Then, the floor frame 3 is moved up and down with the corner portions 38 aligned so that the floor frame 3 does not protrude from the ceiling frame 2 while the floor frame 3 is moved to one side of the ceiling frame 2 (long side direction Y). They are arranged in parallel with each other separated from each other. As a result, the floor frame 3 does not exist under the region of the opposite half of the ceiling frame 2 (long side direction Y).

If necessary, a metal intermediate beam 94 or the like may be attached to the inside of the ceiling frame 2 to reinforce the ceiling frame 2. The intermediate beam 94 may be installed, for example, in a position parallel to the floor beam 25 at a position on the upper side (almost directly above) of the floor beam 25 located inside the ceiling frame 2 in the small floor frame 3a.

Under the ceiling frame 2, the thin square pipe pillar 9 located on the floor frame 3 (small floor frame 3a) and the thin square pipe pillar 9 located outside the floor frame 3 have different lengths. Only the thin square pipe pillar 9 located on the floor frame 3 was attached with the upper end and the lower end between the floor frame 3 and the ceiling frame 2, and was detached from the floor frame 3. The upper end of the thin square pipe column 9 is attached only to the ceiling frame 2. That is, the floor frame 3 and the ceiling frame 2 are vertically connected to each other by only a part of the plurality of thin square pipe columns 9.

In the case of this embodiment, as described above, a total of five thin square pipe columns 9 are installed at the four corners 38 of the ceiling frame 2 or at positions in the vicinity thereof.

At the corner 38 on one side of the ceiling frame 2 in the long side direction Y, one thin square pipe column 9 is provided near the ends of the two long ceiling beams 5, and one thin square pipe column 9 is provided near the ends of the two long ceiling beams 5, and the vicinity of one end of the short ceiling beam 6. One thin square pipe pillar 9 is attached to the ceiling, for a total of three. The lower ends of these three thin square pipe columns 9 are fixed to the floor frame 3 (small floor frame 3a).

Further, at the corner portion 38 on the opposite side of the long side direction Y of the ceiling frame 2, two thin square pipe columns 9 are attached in the vicinity of both ends of the short ceiling beam 6, respectively. The lower end portion (non-connected lower end portion 91) of these two thin square pipe columns 9 is not fixed to the floor frame 3 (small floor frame 3a).

However, the number and positions of the thin square pipe columns 9 installed on the ceiling frame 2 and the floor frame 3 are not limited to the above. For example, as will be described later, the thin square pipe pillar 9 is additionally provided between the intermediate portion of the ceiling frame 2 in the long side direction Y and the corner portion 38 located inside the floor frame 3 located directly below the intermediate portion. Can be installed.

Regarding whether the thin square pipe column 9 should be mounted so as to withstand both vertical load and horizontal load (FIG. 2) or to support only vertical load (FIG. 7). , The same as the above embodiment. In this embodiment, all thin square pipe columns 9 are mounted so as to withstand both vertical and horizontal loads.

(9) As shown in another embodiment of FIG.
The thin square pipe pillar 9 may be provided in the middle portion of the side of the ceiling frame 2.

Here, the middle portion of the side of the ceiling frame 2 is an intermediate position away from both ends and its vicinity on at least one of the four sides of the ceiling frame 2 constituting the building unit 1. ..

The side may be any side of the four sides of the ceiling frame 2 having a substantially rectangular shape in a plan view. The side to which the thin square pipe pillar 9 is attached may be any one side, any two sides, any three sides, or all four sides having a rectangular shape. Further, the side to which the thin square pipe pillar 9 is attached may be the long side or the short side of the ceiling frame 2. In this embodiment, the thin square pipe column 9 is attached to the middle portion of one of the long sides.

The intermediate portion may be the central portion of the side (the position of the bisector) or the position deviated from the central portion of the side.

The number of thin square pipe columns 9 to be installed on either side may be one or a plurality.

The thin square pipe pillar 9 may be connected between the ceiling frame 2 and the floor frame 3, or may have an upper end portion attached only to the ceiling frame 2. As a result, the thin square pipe column 9 in the intermediate portion can be used as, for example, a load supporting member and a stud (structural column).

In this embodiment, one thin square pipe column 9 is installed so as to connect the ceiling frame 2 and the floor frame 3 to the position of the middle portion (near the central portion) of one of the long ceiling beams 5. ing. The number and positions of the thin square pipe columns 9 installed on the ceiling frame 2 are not limited to the above.

In this case, the building unit 1 may support the ceiling frame 2 only with a thin square pipe pillar 9, or a large pillar 4 (normal pillar 35, or a normal pillar 35) normally used for a general building unit 1. It may have at least one large cross-section square pipe pillar). In this embodiment, a general building has four ordinary pillars 35 at four corners 38, and the ceiling frame 2 and the floor frame 3 have the same size and shape and are completely overlapped on top of each other. A thin square pipe pillar 9 is additionally installed for the unit 1.

Regarding whether the thin square pipe column 9 should be mounted so as to withstand both vertical load and horizontal load (FIG. 2) or to support only vertical load (FIG. 7). , The same as each of the above embodiments.

In this embodiment, a normal large pillar 4 (normal pillar 35 or a large cross-sectional square pipe pillar) is attached at the positions of four corners 38 of the ceiling frame 2, and the normal pillar 35 is a vertical load. Since it is sufficiently capable of withstanding both vertical load and horizontal load, the thin square pipe column 9 is mounted so as to support only vertical load even if it is mounted so as to be able to withstand both vertical load and horizontal load. Either way, it doesn't matter, but the mounting method is such that it can withstand both vertical and horizontal loads.

<Action / Effect> According to this example, the following action / effect can be obtained.

(Effect 1) The building unit 1 (unit frame 12) has at least one thin cylindrical pipe pillar 9 having a square cylinder shape having a thickness 8 smaller than the width 7 of the ceiling beams 5 and 6 constituting the ceiling frame 2. It may be used as above.

As a result, the thin square pipe pillar 9 is lighter than the normal large pillar 4 (normal pillar 35) used in the general building unit 1, so that the pillar 4 (structural pillar) can be easily handled. become. Further, by using at least one thin square pipe pillar 9 for the building unit 1, it is possible to reduce the number of ordinary large pillars 4, and the manufacturing of the building unit 1 can be facilitated accordingly. become able to.

Since the thin square pipe column 9 has a closed cross section, relatively high strength can be obtained, and therefore, it has a sufficient function to be used as a structural column (load support member) that supports the structure of the building unit 1. As a member that is less likely to cause "twisting", which tends to be a problem for mounting columns 4 on ceiling beams 5 and 6 (having an open cross section) and floor beams 24 and 25 that are generally used in building units 1. , Can be suitably used for the building unit 1.

Since the thin square pipe pillar 9 has a thickness 8 smaller than the width 7 of the ceiling beams 5 and 6, for example, the wall member 19 is not affected by the pillar 4 (the shape of the pillar 4 does not appear). It can be installed in the building unit 1 and neatly stored inside the wall member 19.

Further, by using the thin square pipe pillar 9 for the corner portion 38 of the building unit 1 and its vicinity, the thin square pipe pillar 9 is a large pillar 4 (normal pillar 35) normally used for the building unit 1. Since the thickness 8 is smaller than that of), the space occupied by the pillar 4 can be reduced, and for example, the installation position of the wall member 19 with respect to the inside and outside of the building unit 1 is made closer to the ceiling beams 5 and 6. Therefore, it becomes possible to expand the internal space of the building unit 1.

The thin square pipe column 9 may be fixed to the lower surfaces of the ceiling beams 5 and 6 with bolts 11. By fixing the thin square pipe pillar 9 to the lower surface of the ceiling beams 5 and 6 with the bolt 11, the thin square pipe pillar 9 on the lower surface of the ceiling beams 5 and 6 has no restriction on the installation position. The pillar 9 can be installed at any position along the ceiling frame 2. Further, by fixing with the bolt 11, the position of the thin square pipe column 9 can be easily moved.

The thin square pipe column 9 may be fixed with bolts 11 between the lower surfaces of the ceiling beams 5 and 6 and the upper surfaces of the floor beams 24 and 25. By fixing the thin square pipe pillar 9 to the lower surface of the ceiling beams 5 and 6 and the upper surface of the floor beams 24 and 25 with bolts 11, the thin square pipe pillar between the ceiling beams 5 and 6 and the floor beams 24 and 25. Since there is no restriction on the installation position of 9, the thin square pipe pillar 9 can be installed at a free position between the ceiling frame 2 and the floor frame 3. Further, by fixing with the bolt 11, the position of the thin square pipe column 9 can be easily moved.

(Action effect 2) The ceiling beams 5 and 6 may be members having an open cross section with one side surface open. Then, inside the ceiling beams 5 and 6, the stiffener 41 may be attached at a position where the thin square pipe pillar 9 is attached. Similarly, the floor beams 24 and 25 may be members having an open cross section with one side surface open. Then, if necessary, a stiffener 42 may be attached to the inside of the floor beams 24 and 25 at a position where the thin square pipe pillar 9 is attached.

By using the ceiling beams 5, 6 (and floor beams 24, 25) as members with an open cross section, the internal space of the ceiling beams 5, 6 (and floor beams 24, 25) can be used to utilize the ceiling beams 5, 6 (and floor beams 24, 25). The stiffener 41 (or stiffener 42) can be attached to the floor beams 24 and 25) so as not to get in the way.

The ceiling beams 5 and 6 (and the floor beams 24 and 25) having an open cross section can be easily made into a ceiling frame 2 (or a floor frame 3) by arranging one open side surface outward. Since the ceiling 41 can be attached from the outside of the building unit 1, it is preferable for attaching the ceiling 41 (or the ceiling 42). However, as described above, the ceiling beams 5 and 6 (and the floor beams 24 and 25) having an open cross section may be arranged so that one open side surface faces inward, or a combination of inward and outward directions is used. It may be arranged.

By attaching the stiffener 41 (or stiffener 42) to the position where the thin square pipe pillar 9 is installed, the position where the thin square pipe pillar 9 is attached to the ceiling beams 5 and 6 (and the floor beams 24 and 25) can be set to the stiffener 41 (or). It can be partially and efficiently reinforced by the stiffener 42) to prevent buckling of the ceiling beams 5 and 6 (and the floor beams 24 and 25).

(Action effect 3) The stiffener 41 may be provided with a side plate 51 that is abutted from above on the lower surfaces of the ceiling beams 5 and 6. Similarly, if necessary, the stiffener 42 may be provided with a supporting plate 52 that is abutted from below on the upper surfaces of the floor beams 24 and 25.

The area around the position where the thin square pipe pillar 9 is attached on the lower surfaces of the ceiling beams 5 and 6 (and the flange portions 23 and the flange portions 27 on the upper surfaces of the floor beams 24 and 25) is installed on the stiffener 41 (or stiffener 42). The ceiling beams 5 and 6 (and the floor beams 24 and 25) can be partially and efficiently reinforced by pressing the surface of the attached plate 51 (or the attached plate 52).

(Action effect 4) A reinforcing piece 61 may be attached to the outer surface of the upper end portion of the thin square pipe column 9. Similarly, if necessary, the reinforcing piece 62 may be attached to the outer surface of the lower end portion of the thin square pipe column 9.

The periphery of the end portion of the thin square pipe pillar 9 can be partially and efficiently reinforced by the reinforcing piece 61 or the reinforcing piece 62 attached to the outer surface of the end portion (upper end portion or lower end portion) of the thin square pipe pillar 9.

Therefore, for example, the thin square pipe column 9 itself can be reinforced by the reinforcing piece 61 so as to withstand the vertical load and the horizontal load (for example, seismic force and wind pressure) acting on the thin square pipe column 9. become.

At this time, by forming the reinforcing piece 61 (or the reinforcing piece 62) into a ring-shaped member or a single or a plurality of C-shaped members, the thin square pipe column 9 can be reinforced by the reinforcing piece 61 over almost the entire circumference. can.

(Action 5) An end plate 71 that is abutted from below on the lower surfaces of the ceiling beams 5 and 6 may be attached to the upper end of the thin square pipe column 9. Similarly, if necessary, an end plate 72 that is abutted from above on the upper surfaces of the floor beams 24 and 25 may be attached to the lower end of the thin square pipe column 9.

The end plate 71 (or end plate 72) attached to the upper end (or lower end) of the thin square pipe pillar 9 allows the upper end (or lower end) of the thin square pipe pillar 9 to have ceiling beams 5, 6 and floor beams 24, The fixed portion with respect to 25) can be partially and efficiently reinforced.

Then, by bringing the end plate 71 (or the end plate 72) into contact with the lower surfaces of the ceiling beams 5 and 6 (and the upper surfaces of the floor beams 24 and 25), the lower surfaces of the ceiling beams 5 and 6 (and the floor beams 24 and 25) are brought into contact with each other. A portion (fixing portion 73) for fixing the thin square pipe column 9 with the bolt 11 can be secured and set on the upper surface of the ceiling).

Further, for example, by abutting and fixing the end plate 71 (or the end plate 72) to the lower surface of the ceiling beams 5 and 6 (or the upper surface of the floor beams 24 and 25) (thickened), the ceiling beams 5 and 6 are fixed. It is possible to make the thin square pipe column 9 receive the vertical load and the horizontal load applied to the thin square pipe column 9 from (and the floor beams 24, 25) via the end plate 71 (or the end plate 72). It will be possible.

In addition to making the end plate 71 (or end plate 72) thicker, or other than making the end plate 71 (or end plate 72) thicker, the end of the thin square pipe column 9 is reinforced. At least one of attaching the piece 61 (or the reinforcing piece 62), attaching the auxiliary plate 51 (or the auxiliary plate 52) to the stiffener 41 (or the stiffener 42), or using a bolt 11 having a large diameter. By adopting one or all of them, it is possible to receive the vertical load and the horizontal load acting on the thin square pipe column 9.

(Action 6) The end plates 71 and 72 at the ends of the thin square pipe column 9 may be provided with web surfaces 81 and 82 extending vertically.

For example, when the thin square pipe pillar 9 is to support only a vertical load, the thin square pipe pillar 9 does not have to receive a horizontal load, but the ceiling beams 5 and 6 (or floor beams) due to the horizontal load are not required. As the thin square pipe column 9 tilts with the lateral displacement of 24 and 25), the end plates 71 and 72 are deformed in the vertical direction Z as shown in FIG. 9 (c). In this case, small deformation of the end plates 71 and 72 in the vertical direction Z is allowed to some extent, but the generated stress F in the vertical direction Z is the ceiling beams 5, 6 and the floor beams 24, 25 and the thin square pipe column. It is necessary to transmit to the bolt 11 that fixes the space between the 9 and 9. Therefore, the web surfaces 81 and 82 extending vertically were integrally formed on the end plates 71 and 72. As a result, the minimum required stress F can be transmitted to the bolt 11 by the proof stress G in the surface direction (vertical direction Z and the longitudinal direction 31) of the web surfaces 81 and 82.

(Action 7) The ceiling frame 2 may be supported from below only by the thin square pipe pillar 9. Thereby, in addition to the effects of the thin square pipe pillar 9 and the like described above, the building unit 1 in which the ceiling frame 2 is supported only by the thin square pipe pillar 9 can be configured, for example, a new building unit having a beam-winning structure. 1 will be able to be provided. The new building unit 1 having this beam-winning structure can be used together with the normal building unit 1 to form a unit building.

Further, by supporting the ceiling frame 2 only by the thin square pipe pillar 9, the building unit 1 can be assembled not only in the factory but also in the construction site.

That is, for example, the ceiling frame 2 and the floor frame 3 as parts are manufactured in advance at the factory, transported to the construction site, separated vertically at the construction site, and connected by a thin square pipe pillar 9 (bolt). By fixing with 11), the building unit 1 can be assembled relatively easily even at the construction site. Therefore, the manufacturing equipment of the large-scale building unit 1 can be eliminated, and the equipment required in the factory can be simplified.

(Action Effect 8) At least a part of the thin square pipe column 9 may have a lower end portion that is not fixed to the floor frame 3. As a result, in addition to the effects of the thin square pipe pillar 9 and the building unit 1 described above, the floor frame 3 can be made smaller than the ceiling frame 2, so that the floor frame 3 is smaller than the ceiling frame 2 in a new structure. Building unit 1 can be provided. Then, the lower end portion that is not fixed to the floor frame 3 can be directly fixed to the foundation 93, the ceiling frame 2 of the building unit 1 on the lower floor, and the like. The building unit 1 having such a structure can be applied, for example, when it is desired to make the floor structure irregular, such as in a store, a garage, or a front door.

(Action 9) A thin square pipe pillar 9 may be provided in the middle portion of the side of the ceiling frame 2. As a result, in addition to the effects of the thin square pipe pillar 9 and the building unit 1 described above, the thin square pipe pillar 9 provided in the middle of the sides of the ceiling frame 2 increases the bearing capacity for the ceiling frame 2. The building unit 1 can be freely reinforced. Further, at the construction site as well, the thin square pipe pillar 9 can be freely additionally attached to the ceiling frame 2 of the building unit 1 later. As described above, the thin square pipe pillar 9 can be installed at any position and the position of the thin square pipe pillar 9 can be easily moved, which is effective when reinforcing the building unit 1.

Then, for example, a thin square pipe pillar 9 is added to a general building unit 1 having a normal large pillar 4 (normal pillar 35 or a large cross-section square pipe pillar) (with a pillar-winning structure). By providing the above, the general building unit 1 can be freely reinforced by the thin square pipe pillar 9.

1 Building unit 2 Ceiling frame 3 Floor frame 4 Pillar 5 Ceiling beam 6 Ceiling beam 7 Width 8 Thickness 9 Thin square pipe pillar 11 Bolt 12 Unit frame 24 Floor beam 25 Floor beam 31 Longitudinal direction 32 Width direction 41 Stifuna 51 Attachment plate 61 Reinforcement Piece 71 End plate 72 End plate 81 Web surface 82 Web surface 91 Unconnected lower end X Short side direction Y Long side direction Z Vertical direction

Claims (9)

It is a building unit in which the ceiling frame and the floor frame are separated vertically and connected by pillars.
For the pillar, at least one thin square pipe pillar having a square cylinder shape having a thickness smaller than the width of the ceiling beam constituting the ceiling frame is used.
The thin square pipe pillar is a building unit characterized in that it is fixed to the lower surface of the ceiling beam with bolts. The building unit according to claim 1.
The ceiling beam is a member having an open cross section with one side open.
A building unit characterized in that a stiffener is attached to the inside of the ceiling beam at a position where the thin square pipe pillar is attached. The building unit according to claim 2.
A building unit characterized in that a supporting plate abutting from above is attached to the lower surface of the ceiling beam to the stiffener. The building unit according to any one of claims 1 to 3.
A building unit characterized in that a reinforcing piece is attached to the outer surface of the upper end portion of the thin square pipe pillar. The building unit according to any one of claims 1 to 4.
A building unit characterized in that an end plate abutted from below is attached to the lower surface of the ceiling beam at the upper end of the thin square pipe pillar. The building unit according to claim 5.
A building unit characterized in that the end plate is provided with a web surface extending vertically. The building unit according to any one of claims 1 to 6.
The ceiling frame is a building unit characterized in that it is supported from below only by the thin square pipe pillar. The building unit according to any one of claims 1 to 7.
A building unit characterized in that at least a part of the thin square pipe pillar has a lower end portion that is not fixed to the floor frame. The building unit according to any one of claims 1 to 8.
A building unit characterized in that the thin square pipe pillar is provided in an intermediate portion of a side of the ceiling frame.

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