JP2000027308A - Building unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the strength of the joined connection of a column and a beam by joining an outside diaphragm to the beam by inserting a column of a circular cross-section into the outside diaphragm and fixing, in a building unit made up of a framed structure where the column and the beam are joined. SOLUTION: Outside diaphragms 14 are welded to column joining portions as the corners of a floor beam frame 13 where four floor beams 12 are assembled into a rectangular frame, columns 11 each having a circular cross-section, are inserted into the outside diaphragms 14 and the outside diaphragms 14 are welded to optional positions of the columns 11. And the columns 11 are steel pipes each having a circular cross section or the like, the floor beams 12 are channel steel or the like, end plates being mounted on and welded to the upper and lower ends of the columns 11, and the outside diaphragms 14 are octahedral. And then, the upper flange 12A of the floor beams 12 are welded to the flat surfaces of upper outside diaphragms 14A, and the lower flanges 12B are welded to the lower outside diaphragms 14B. Therefore, constructibility and workability of a building unit can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a building unit.

[0002]

2. Description of the Related Art Conventionally, in a building unit composed of a frame structure in which a column and a beam are joined, as described in JP-A-5-9980, a column having a rectangular cross section is used.

[0003]

However, a building unit using a pillar having a rectangular cross section has the following problems. A pillar having a square cross section, for example, a square steel pipe, is subjected to excessive plastic deformation at the corner thereof during the formation of a square shape, and a large residual stress is introduced.

When an end plate is welded to the end face of a column made of a rectangular tube, a discontinuity of welding occurs at a corner of the end plate, resulting in poor weldability.

An object of the present invention is to provide a building unit
The purpose is to improve the proof strength of columns, beam-column joint strength, and weldability of end plates.

[0006]

According to the first aspect of the present invention, there is provided a building unit comprising a framed structure in which a pillar and a beam are joined, wherein the pillar has a circular cross section.

According to a second aspect of the present invention, in the first aspect of the present invention, an outer diaphragm into which the column having the circular cross section is inserted and which can be fixed is used, and a beam is joined to the outer diaphragm. It is made to be.

According to a third aspect of the present invention, in the second aspect of the present invention, the outer diaphragm further has a flat surface for joining beams.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the outer diaphragm further has a flat surface on which the beams are not joined.

The present invention according to claim 5 provides the present invention according to claims 1-4.
In the present invention according to any one of the above, further, the frame structure is configured by joining a floor beam and a ceiling beam to a column.

The present invention described in claim 6 provides the invention according to claims 1-4.
In the present invention described in any one of the above, further, the frame structure is constituted by joining a floor beam to a column and having no ceiling beam.

[0012]

According to the first aspect of the present invention, there are the following operations (1) to (4). (1) A column having a circular cross section, for example, a circular pipe, has no corners or the like to which excessive plastic deformation is applied, and does not introduce large residual stress.

(2) When a round section and a square section having the same second moment of area are compared, the round section has a smaller section modulus (Z). Cost can be reduced.

(3) When the end plate is welded to the end face of the column made of the circular pipe, no weld discontinuity occurs along the outer periphery of the end plate, and the weldability is good.

(4) In a pillar made of a circular tube, even if the pillar is twisted around its own axis, the outer shapes of the upper and lower end plates do not deviate from each other in plan view. Therefore, even if the pillars of the lower-floor building units are twisted, the building units on the upper and lower floors can be stacked vertically without being twisted.

According to the second aspect of the present invention, the following (5) to (9)
Has the effect of (5) When the outer diaphragm is provided around the column, the outer shape of the outer diaphragm can be made smaller by making the column have a circular cross section than when the column has a square cross section.

(6) The pillar is inserted into and fixed to the outer diaphragm to which the beam is joined, there is no possibility of having a defect due to welding of the divided pillar, the passing accuracy of the pillar is good, and the No bend.

(7) The column and the outer diaphragm need only be joined with a joint strength sufficient to transmit a load acting on the beam, such as bending or shear, to the column, and the residual stress at this joint is small. In addition, by providing the outer diaphragm with a certain thickness and width (outer diameter) to secure its rigidity, deformation of the column at the beam-column joint can be suppressed. Thus, the rigidity and proof stress of the beam-column joint can be improved.

(8) When securing a certain rigidity to the outer diaphragm, by increasing its thickness, the width (outer diameter) can be reduced, and the occupied space around the column of the beam-column joint can be reduced.

(9) Since the outer diaphragm is inserted into and fixed to the column and attached to the outer periphery of the column, the outer diaphragm is not immediately deformed due to bending or torsion of the column.
Therefore, when the outer diaphragm is used as a construction reference plane for a building such as providing an outer wall mounting member, the outer wall mounting accuracy is improved regardless of the deformation of the column because the bent or twisted column surface is not used as a reference. it can.

According to the third aspect of the present invention, the following operation (10) is obtained. (10) Since the surface of the outer diaphragm to which the beam is joined is made flat, the joint end surface of the beam joined to the outer diaphragm is sufficient to be a flat surface that has no curvature and does not require special processing. Can be simplified.

According to the present invention, there is provided the following effect (11). (11) Since the surface of the outer diaphragm where the beams are not joined is also a flat surface, this flat surface can be suitably used as the building reference surface of the above-mentioned (9).

According to the fifth and sixth aspects of the present invention, the following (12):
There is the action of (13). (12) A floor beam frame or ceiling beam frame is joined to the outer diaphragm, and the fixed height position of the outer diaphragm with respect to the column is arbitrarily adjusted to process the floor and ceiling surfaces with high dimensional accuracy into columns. Without applying 1
It can be easily constructed at any height of the book pillar.

(13) In each of the floor beam frame and the ceiling beam frame, the intersection angle of the two beams that intersect around the pillar can be easily set, and not only a rectangular parallelepiped building unit but also a trapezoidal site can be used. Gender-specific building units can be easily constructed.

[0025]

FIG. 1 is a schematic view showing a beam-column joint, FIG. 2 is a plan view showing a plan configuration of a building unit, and FIG.
FIG. 4 is a plan view showing a modification of the planar configuration of the building unit, and FIG.
FIG. 5 is a schematic diagram showing a building unit assembling process, FIG. 5 is a side view showing a building unit, FIG. 6 is a side view showing a modification of the building unit, FIG. 7 is a schematic diagram showing a unit building, and FIG. FIG. 9 is a schematic diagram showing a modified example, and FIG. 9 is a schematic diagram showing the effect of the torsion of the pillar on the stacked state of the upper and lower building units.

As shown in FIG. 7, a unit building 1A transports a factory-produced building unit 10 to a local construction site, and installs the plurality of building units 10 on the foundation 2 in the horizontal and vertical directions. , Building unit 1 on the top floor
It is constructed by providing a roof 3 on top of the roof.

Hereinafter, the building unit 10 and the unit building 1
The configuration of A will be described. (Building Unit 10) (FIGS. 1, 2, 4, and 5) The building unit 10 is formed of a skeleton structure in which columns 11 and floor beams 12 are joined as shown in FIGS. The outer diaphragms 14 are welded to the column joints, which are the corners, of the floor beam frame 13 formed by framing the four floor beams 12 into a rectangular shape.
A column 11 having a circular cross section is inserted into the column, and an outer diaphragm 14 is welded to an arbitrary height position of the column 11 to have no ceiling beam.

The column 11 may be a steel pipe having a circular cross section, and the floor beam 12 may be a C-shaped steel. In the case of a pillar 11 made of a steel pipe or the like having a circular cross section, an end plate 11A is attached to upper and lower end faces thereof and welded.

The outer diaphragm 14 has a plurality of flat surfaces 21 and forms a polyhedron such as an octahedron, and has a column insertion hole 22 at the center. Then, of the plurality of flat surfaces 21
Two floor beams 1 intersecting the two flat surfaces 21A and 21B
2 are joined to each other, and these flat surfaces 21
The intersection angle between A and 21B is a right angle. Further, other flat surfaces 21, for example, the other two flat surfaces 21C and 21D are used as building reference surfaces for a building such as providing an outer wall mounting member without joining the floor beam 12, and these flat surfaces 21C and 21D are used.
The intersection angle between C and 21D is a right angle (FIG. 2). The intersection angle of each flat surface 21 provided in the outer diaphragm 14 is processed with high precision at the component stage of the outer diaphragm 14, and the intersection angle between the flat surface 21A and the flat surface 21B and the intersection angle between the flat surface 21C and the flat surface 21D are determined as follows. When they can be made mutually orthogonal with high precision, the perpendicularity of the floor beam 12 and the perpendicularity of the outer wall that intersect at each column joint of the floor beam frame 13 can be easily and accurately increased.

Here, in the case of the floor beam frame 13, when the floor beam 12 is a C-shaped steel as described above and has upper and lower flanges 12A and 12B and a web 12C, the upper and lower flanges are connected to each column joint. Outer diaphragms 14A and 14B are used.
The upper flange 12A of the floor beam 12 is welded to the flat surface 21 (21A, 21B) of the upper outer diaphragm 14A,
The lower flange 12B is a flat surface 2 of the lower outer diaphragm 14B.
1 (21A, 21B), the webs 12C are not connected to their outer diaphragm 14 nor to the side of the pillar 11 (FIG. 1). In other words, the floor beam 12 has only the cross section necessary for transmitting loads such as bending and shear to the upper and lower outer diaphragms 14A and 14B, in other words, only the cross section of the upper flange 12A and the lower flange 12B.
A and 14B are sufficient.

In the floor beam frame 13, the rigidity of the outer diaphragm 14 can be secured by increasing the thickness t of the outer diaphragm 14, and the column 11 at the column-beam joint between the column 11 and the floor beam 12 can be secured. 11 can be suppressed. And
When the upper and lower outer diaphragms 14A and 14B are provided at each column joint of the floor beam frame 13, the upper and lower outer diaphragms 1
What is necessary is just to weld at least one of 4A and 14B to the pillar 11. The outer diaphragm 14B has a large thickness t so that the radial width b is small, and
The overhang of the outer diaphragm 14 around it can be reduced.

The procedure for assembling the building unit 10 will be described below (FIG. 4). (1) Four floor beams 12 and four upper and lower outer diaphragms 14
(14A, 14B) to use a rectangular floor beam frame 13
Is manufactured as described above (FIG. 4A).

(2) The pillars 11 are inserted into the respective outer diaphragms 14 provided on the floor beam frame 13, and the outer diaphragms 14 are welded to arbitrary height positions of the respective pillars 11 (FIG. 4).
(B), (C)). Thus, the building unit 10 having the floor beam frame 13 and no ceiling beam is constructed.

In the building unit 10, as shown in FIG. 5, a floor panel 31 is attached on the floor beam frame 13, and a ceiling panel 32 is attached to the upper end of the column 11. Used.

In the above (1), the floor beam 12 and the outer diaphragm 14 are connected to the beam end faces (flanges 12A, 12A) of the floor beam 12.
B) As described above, the flat surface 21 of the outer diaphragm 14
(21A, 21B) are joined by butt welding. However, the floor beam 12 and the outer diaphragm 14 may be connected to another joint structure by projecting a connection piece having the same cross section as the floor beam 12 from the outer diaphragm 14 and butt-welding the beam end face of the floor beam 12 to the connection piece. May be joined together.

In the above (2), the pillar 11 and the outer diaphragm 14 are joined by fillet welding the side surface of the pillar 11 and the outer diaphragm 14. However, the column 11 and the outer diaphragm 14 may be joined by another joining structure such as bonding, caulking, shrink fitting, wedge insertion, or the like.

(Unit Building 1A) (FIG. 7) As shown in FIG. 7, the unit building 1A is provided with a plurality of building units 10 adjacent to each other in the horizontal and vertical directions.
The floor beam frame 13 of the building unit 10A on the upper floor is
1, a ceiling panel 32 for a lower floor is attached below the floor beam frame 13 of this building unit 10A.
The ceiling unit is not attached to the pillar 11 of the building unit 10B on the lower floor side, and a high ceiling space 4 (ceiling height H ₁ ) is formed on the lower floor. In addition, the pillar 11 of the building unit 10A on the upper floor side
The ceiling unit is not attached to the building unit 1 on the upper floor side.
The back space 5 is formed by the roof 3A and the roof 3A.

Therefore, according to the present embodiment, the following operations are provided. (1) The column 11 having a circular cross section, for example, a circular tube, has no corners or the like to which excessive plastic deformation is given, and does not introduce a large residual stress, and thus has a high proof stress.

(2) When comparing a round section and a square section with the same second moment of area, the round section has a smaller section modulus (Z). The mouth cost can be reduced.

(3) When the end plate 11A is welded to the end face of the column 11 made of a circular pipe, the end plate 11A
No weld discontinuity occurs along the outer periphery of the steel sheet, and the weldability is good.

(4) Even if the column 11 is twisted around its own axis, the column 11 made of a circular tube is
The outer shapes of 1A do not shift from each other in plan view. Therefore, even if the pillar 11 of the lower-floor building unit is twisted, the building units on the upper and lower floors can be stacked up and down without being twisted with each other. For example, in the case of a pillar 100 made of a rectangular tube, if the pillar is twisted as shown in FIG.
(A)), outline ABCD of the upper end plate 111 of the pillar
Are displaced in the torsion direction with respect to the outer shape A′B′C′D ′ of the lower end plate 112 (FIG. 9B). The upper and lower building units are provided with the guide holes 111A of the upper end plate 111 of the column of the lower floor building unit and the pin holes 1 of the lower end plate 112 of the column of the upper floor building unit.
12A is inserted (FIG. 9C), and the four corners of the upper and lower end plates 111 and 112 are aligned with each other and laminated. Therefore, when the upper and lower building units are stacked, the frame structure of the lower floor building unit rises based on the outer shape A'B'C'D 'of the lower end plate 112, and the upper floor building unit becomes the lower floor building unit. As a result, the frame structure stands up with reference to the outer shape ABCD of the upper end plate 111, and as a result, the building units on the upper and lower floors are vertically stacked with each other twisted.

(5) When the outer diaphragm 14 is provided around the column 11, the column 11 has a circular cross section.
The outer shape of the outer diaphragm 11A can be made smaller than when the column 11 has a rectangular cross section.

(6) The pillar 11 is inserted into and fixed to the outer diaphragm 14 to which the floor beam 12 is joined, and there is no possibility that the pillar 11 is accompanied by defects due to welding of the divided pillar 11.
The threading accuracy of 1 is good, and the column 11 is not bent.

(7) The column 11 and the outer diaphragm 14 only need to be joined with a joint strength sufficient to transmit a load acting on the floor beam 12, such as bending or shear, to the column 11. small. In addition, by providing the outer diaphragm 14 with a certain thickness t and a certain width b (outer diameter) to secure its rigidity, deformation of the column 11 at the beam-column joint can be suppressed. Thus, the rigidity and proof stress of the beam-column joint can be improved.

(8) When securing a certain rigidity to the outer diaphragm 14, the width b (outer diameter) can be reduced by increasing the thickness t, and the space occupied around the column 11 of the beam-column joint is provided. Can be reduced.

(9) Since the outer diaphragm 14 is inserted into and fixed to the column 11 and is attached to the outer periphery of the column 11, it is not immediately deformed due to bending or twisting of the column 11. Therefore, when the outer diaphragm 14 is used as a construction reference surface of a building such as a case where an outer wall mounting member is provided, the mounting accuracy of the outer wall is improved irrespective of the deformation of the column 11 because the bent or twisted column surface is not used as a reference. And so on.

(10) Floor beam 12 at outer diaphragm 14
The surface to be joined is a flat surface 21. Therefore, the joint end surface of the floor beam 12 joined to the outer diaphragm 14 needs to be a flat surface having no curvature and requiring no special processing, thereby simplifying the beam-column joint. it can.

(11) In the outer diaphragm 14, the floor beam 1
Since the surface where 2 is not joined is also a flat surface 21, this flat surface 21 can be suitably used as the building reference surface of the above-mentioned (9).

(12) Floor beam frame 1 on outer diaphragm 14
3 and the column 1 of the outer diaphragm 14
By arbitrarily adjusting the fixed height position for 1
Floors and ceilings with high dimensional accuracy can be easily constructed at any height of one pillar 11 without processing the pillars 11.

(13) In the floor beam frame 13, the intersection angle of the two floor beams 12 that intersect around the column 11 can be easily set, and the rectangular parallelepiped building unit 10 can be easily constructed with high accuracy.

Next, the building unit 10 and the unit building 1
A modified example of A will be described. (Deformed building unit 30) (FIG. 3) The deformed building unit 30 of FIG.
The four floor beams 1 constituting the floor beam frame 13 as compared to 0
One of the two floor beams 12 is an oblique floor beam 31 that is obliquely arranged with respect to the other floor beams 12, and the frame of the floor beam frame 13 is trapezoidal.

In this deformed building unit 30, two floor beams 12 and 31 that intersect each other are joined and the outer diaphragm 14 is joined.
In the above, the intersection angles of the beam joint flat surfaces 21A and 21B are provided with high precision at the component stage so as to match the desired intersection angles of the floor beams 12 and 31. Thus, the trapezoidal floor where the floor beams 12, 31 intersect at the desired intersection angle only by butt-welding the beam end surfaces of the floor beams 12, 31 to the above-mentioned flat surfaces 21A, 21B of the outer diaphragm 14. The beam frame 13 can be constructed easily and with high accuracy. This building unit 30 can well cope with a site having an oblique boundary line, and is excellent in site coping ability.

(Building Unit 40 with Ceiling Beam) (FIG. 6) The building unit 40 of FIG. 6 has a ceiling beam 41 above the pillar 11 as compared with the building unit 10 described above. That is, in the building unit 40, the outer diaphragm 43 is provided at a column joint, which is a corner portion of a ceiling beam frame 42 formed by framing four ceiling beams 41 into a rectangular shape or a trapezoidal shape.
Is inserted into each outer diaphragm 43, and the column 11 having a circular cross section is inserted into the outer diaphragm 43.
Are welded to have a ceiling beam 41 in addition to the floor beam 12 described above.

In the building unit 40, in addition to the floor panel 31 attached to the floor beam frame 13, a ceiling panel 44 is attached below the ceiling beam frame 42 for use.

(Unit Building 1B) (FIG. 8) As shown in FIG. 8, the unit building 1B has a plurality of building units.
In installing the unit 10 horizontally and vertically adjacently,
One of the neighboring building units 10A and 10B
Attach the floor beam frame 13 of the unit 10A to the middle part of the column 11.
Provided, floor beams 1 of both building units 10A, 10B
3 are different from each other in height position. This
The ceiling height between adjacent building units 10A and 10B.
(Ceiling height H ₁ , H_Two Form a space with different changes
Wear. It can be used under the floor of the building unit 10A.
The underfloor space 6 can be formed.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration 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 included in the present invention. For example, in the building unit to which the present invention is applied, the frame shape of the beam frame is not limited to a square shape, but may be any polygonal or curved body.

The unit building in which the present invention is used may be any one of a plurality of building units that adopts the structure of the present invention, and the other part may include a building unit not according to the present invention. May be included.

[0058]

As described above, according to the present invention, in a building unit, the column strength, the beam-column joint strength, and the weldability of the end plate can be improved. Further, it is possible to improve the assembling workability of the building unit and reduce the cost of the joint.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a beam-column joint.

FIG. 2 is a plan view showing a plan configuration of a building unit.

FIG. 3 is a plan view showing a modification of the planar configuration of the building unit.

FIG. 4 is a schematic view showing a process of assembling a building unit.

FIG. 5 is a side view showing a building unit.

FIG. 6 is a side view showing a modification of the building unit.

FIG. 7 is a schematic diagram showing a unit building.

FIG. 8 is a schematic diagram showing a modification of the unit building.

FIG. 9 is a schematic diagram showing an effect of a column twist on a stacked state of upper and lower building units.

[Explanation of symbols]

 10, 30, 40 Building unit 11 Pillar 12, 31, Floor beam 14, 43 Outer diaphragm 21 (21A, 21B, 21C, 21D) Flat surface 41 Ceiling beam

Claims (6)

[Claims] 1. A building unit comprising a frame structure in which a column and a beam are joined, wherein the building unit comprises a column having a circular cross section. 2. The building unit according to claim 1, wherein an outer diaphragm into which the column having the circular cross section is inserted and which can be fixed is used, and a beam is joined to the outer diaphragm. 3. The building unit according to claim 2, wherein said outer diaphragm has a flat surface for joining beams. 4. The building unit according to claim 3, wherein said outer diaphragm has a flat surface on which beams are not joined. 5. The building unit according to claim 1, wherein the frame structure is formed by joining a floor beam and a ceiling beam to a pillar. 6. The frame structure joins floor beams to columns,
The building unit according to any one of claims 1 to 4, wherein the building unit is configured without a ceiling beam.