JP6446593B1 - Non-brace steel building, its construction method and column base unit - Google Patents

Non-brace steel building, its construction method and column base unit Download PDF

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JP6446593B1
JP6446593B1 JP2018164152A JP2018164152A JP6446593B1 JP 6446593 B1 JP6446593 B1 JP 6446593B1 JP 2018164152 A JP2018164152 A JP 2018164152A JP 2018164152 A JP2018164152 A JP 2018164152A JP 6446593 B1 JP6446593 B1 JP 6446593B1
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column
steel
steel frame
pillar
building
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JP2020037775A (en
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伸夫 松田
伸夫 松田
山本 圭一
圭一 山本
暢 東口
暢 東口
圭介 田崎
圭介 田崎
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大和リース株式会社
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[PROBLEMS] To provide a non-brace steel frame building that can eliminate the need for braces, improve the fit of column joints, and eliminate the need for on-site welding while improving factory productivity and transportability by vertically dividing the columns. And provide a column base unit. A non-brace steel structure is composed of a pillar 1 made of square pipe and a beam 2 made of steel. The pillar 1 is composed of a lower pillar 1a and an upper pillar 1b that are joined to each other in the middle of the floor. The upper column 1b is provided with a non-closed cross-section joining steel frame 1bb inserted into the lower column 1a and extending downward from the upper column body 1ba made of a square pipe. The grout is filled in a state where the lower column 1a is embedded with the joining steel frame 1bb of the upper column 1b, and the column joint portion 9 between the lower column 1a and the upper column 1b is rigidly bonded. The beam end component 2b of the beam 2 is welded to at least two side surfaces of the lower end of the lower column 1a. [Selection] Figure 1

Description

  The present invention relates to a non-brace steel frame building such as a lightweight steel frame prefabricated building used as an office building, a commercial facility building, an industrial facility building, a warehouse, a house, etc., a construction method thereof, and a column base unit.

  In the prefabricated building, lightweight steel square pipe columns are often used. Column / beam joints are pin-joined and reinforced with braces. However, when the brace is provided, the degree of freedom of the plan and the restrictions on the design increase, such as the window opening not being taken.

Japanese Patent Laid-Open No. 11-50539 JP-A-8-311991 JP-A-9-31003 JP 2002-242303 A JP-A-6-26098 Japanese Patent Laid-Open No. 2006-159296 JP-A-5-39632 JP 2002-129658 A

If the column / beam joint is made rigid by welding or the like, braces can be eliminated. However, in order to increase the factory production rate or reduce the transport size, it is necessary to divide the columns vertically in the middle of the floor and join them with column joints. For example, a column base unit in which a divided lower column and a short beam constituting the end of the beam in each direction are welded to a factory and transported to the site. According to this, the factory production rate can be increased and the transport size can be reduced.
However, when a column joint is used, even if the column / beam joint is rigidly connected, if the column joint is not rigidly connected, the rigidity of the building is insufficient and reinforcement by braces is required.
There is a configuration in which the column joint is rigidly connected, but there is a configuration in which the square pipe column is connected with high strength bolts, but in order to connect with high strength bolts, it is necessary to superimpose the reinforcing plate. The head of the high-strength bolt protrudes and fits badly.
If welding is performed, a rigid joint can be obtained, but field welding cannot be employed because there are uncertain factors and lack of reliability of the joint.

In addition, various proposals are made | formed as a joint structure of a steel pipe pillar (for example, patent documents 1-8). For example, there are also proposed a method in which a reinforcing bar is interposed in the connection part and the steel pipe column is filled with concrete (Patent Document 1), a connecting column is inserted in the connection part and a grout is filled (Patent Document 2), etc. Has been.
However, Patent Document 1 is a steel pipe column in which concrete is filled in the entire steel pipe column, and the amount of concrete used is large, and it takes time and effort to arrange reinforcing bars at joints.
Patent Document 2 is a configuration in which a short steel pipe joint member provided on the upper column is inserted into the lower column, and grout is filled between the outer periphery of the joint member and the lower column, but the joint member has a closed cross section. The interior is left in space. Therefore, there is little filling amount of grout, there is a concern about cracking of the grout layer, and it is difficult to increase the rigidity of the joint portion.
The other Patent Documents 3 to 8 all have problems such as troublesome joining work or poor fit due to a projecting portion from the column surface.

  The present invention solves the above-mentioned problems, and its purpose is to eliminate the need for braces, improve the fitting of column joints, and perform on-site welding while improving factory productivity and transportability due to the vertically divided structure of the columns. It is to provide a non-brace steel-frame building that can eliminate the need for such a structure, a construction method thereof, and a column base unit.

The non-brace steel structure building of the present invention is a non-brace steel structure building composed of square pipe columns and steel beams,
The pillar is composed of a lower pillar and an upper pillar joined to each other in the middle of the floor height, and the upper pillar is made of a square pipe made of a non-closed cross-section joining steel frame inserted into the lower pillar. It is provided extending downward from the upper column main body, and the lower column is filled with grout in a state where the bonding steel frame is embedded, and the column joint portion between the lower column and the upper column is rigidly connected. And the end surface of the beam end part constituent material used as a part of the length direction of the said beam of each direction is welded to the side surface of the lower end of the said lower column at least in 2 directions.
The joining steel frame of the upper column is inserted over the entire height of the lower column, the grout is filled from the upper end to the lower end of the lower column, and the upper column is grouted. It is unfilled, and the lower end surface of the upper column body is closed by a fore edge plate joined by all-around welding, and the upper end of the joining steel frame is welded to the fore edge plate.

According to this structure, the square pipe column is divided into the lower column and the upper column, the joining steel provided on the upper column is inserted into the lower column, and the lower column is filled with grout. Therefore, the column joint portion is rigidly connected and can bear a horizontal force. Since the column joint portion is rigidly joined and the lower end of the lower column and the beam are joined by welding to form a rigid joint, the brace can be omitted. By omitting the brace, the degree of freedom of the plan and the design (designability) are improved, such as the window opening being freely taken. Although the column joint is rigidly connected, it has a structure that inserts a steel frame for connection and fills with grout, so there is no need for on-site welding, and unlike the case of joining with high-strength bolts, there is a portion protruding outside the column. It does not occur and it fits well. Since the joining steel frame has a non-closed cross-sectional shape, a large amount of grout layer can be obtained, and the strength and rigidity of the grout portion are also excellent.
Further, since the column is divided into a lower column and an upper column and the beam joined to the lower column is only the beam end component material, the transport size can be reduced and the transportability is excellent. Therefore, the lower column and the beam end component can be joined together by factory welding, and no on-site welding is required for this joined portion, so that the joining reliability is improved.

In the non-brace steel frame building of the present invention, among the columns and beams constituting the building, the beams and columns excluding the floor beam on the lowest floor may be light steel frames.
Since the steel column for joining the upper column is inserted into the lower column and filled with grout to make it rigid connection, even if the column is a lightweight steel square pipe, it can be rigidly connected. While using an inexpensive steel building to be used, it is possible to improve the above-mentioned factory productivity and transportability, eliminate the need for braces, improve the fit of column joints, and eliminate the need for on-site welding.
The floor beam on the lowest floor may be either a lightweight steel frame or a heavy steel frame. Even in a lightweight steel building, the floor beam on the bottom floor sometimes doubles as a foundation and is often a heavy steel frame. Is obtained.

The joining steel frame may be a cross-shaped cross, for example, a cross plate.
The joint steel can be of various cross-sectional shapes, but if the cross-sectional shape is a cross, the horizontal force in each direction can be transmitted between the upper column and the lower column, and the grout filling is inhibited. Difficult to grout, and excellent grout filling.

The column upper / lower divided column / beam assembly of the present invention is a column / beam assembly composed of a column made of lightweight steel square pipe and a part of the beam,
A lower column and an upper column joined to each other in the middle of a floor of a steel structure building, and the upper column is made of a square pipe made of a non-closed cross-section steel frame inserted into the lower column. The lower pillar and the upper pillar are rigidly joined by being filled with grout in a state where the joining steel frame is embedded in the lower pillar. The lower column and the beam end configuration are formed by welding end surfaces of beam end component members that are part of the beam length direction in each direction on at least two side surfaces of the lower end of the lower column. A column base unit is composed of materials.
The joining steel frame of the upper column is inserted over the entire height of the lower column, the grout is filled from the upper end to the lower end of the lower column, and the upper column is grouted. It is unfilled, and the lower end surface of the upper column body is closed by a fore edge plate joined by all-around welding, and the upper end of the joining steel frame is welded to the fore edge plate.

  By using the column / beam assembly of this configuration, as explained for the non-brace steel frame building of the present invention, while improving the factory productivity and transportability by the vertically divided structure of the columns, the need for braces, Improves fitting fit and eliminates the need for on-site welding.

The method for constructing a non-brace steel frame building according to the present invention is a method for constructing a non-brace steel frame building composed of square pipe columns and steel beams,
The length direction of the beam in each direction on the lower column of the lower column and the upper column that are joined to each other in the middle of the height of the column and at least two side surfaces of the lower end of the lower column The process of factory-producing a column base unit with welded end faces of the beam end components that are part of
The non-closed cross-section joining steel inserted into the lower column is a process of factory-producing an upper column extending downward from the upper column body made of square pipe,
The process of inserting the joining steel frame of the upper column into the lower column in the column base unit carried into the construction site;
In the state where the joining steel frame is embedded, the lower column is filled with grout and cured,
Including.
The connecting steel frame of the upper column is inserted over the entire height of the lower column, the grout is filled from the upper end to the lower end of the lower column, and the upper column does not grout. The lower end surface of the upper column body in the column base unit is closed by a small plate joined by all-around welding, and the upper end of the joining steel frame is welded to the small plate.

  According to the construction method of this non-brace steel frame building, as explained for the non-brace steel frame building of the present invention, while improving the factory productivity and the transportability by the vertically divided structure of the column, the need for the brace is eliminated. Improves fitting fit and eliminates the need for on-site welding.

  The non-brace steel frame building according to the present invention is a non-brace steel frame building composed of square pipe columns and steel beams, and the lower columns are joined to each other in the middle of the floor height. The upper column is provided with a non-closed cross-section joining steel frame inserted into the lower column and extending downward from the upper column main body made of a square pipe, and the lower column. In addition, the grout is filled in the state in which the joining steel frame is embedded, and the column joint portion between the lower column and the upper column is rigidly coupled, and at least two side surfaces of the lower end of the lower column Because the end faces of the beam end components, which are part of the beam length in each direction, are welded, the brace is eliminated while improving the factory productivity and transportability by the vertically divided structure of the columns. In addition, it is possible to improve the fit of the column joint and eliminate the need for field welding.

  The column vertically divided column / beam assembly of this invention is a column / beam assembly consisting of a column made of lightweight steel square pipe and a part of the beam, and joined to each other in the middle of the floor height of the steel building. The upper column is provided with a non-closed cross-section joining steel frame inserted into the lower column and extending downward from the upper column main body made of a square pipe. The lower column and the upper column are rigidly bonded by filling the lower column with the bonding steel embedded in the grout, and at least two directions of the lower end of the lower column In order to form a column base unit with the lower column and the beam end component material by welding the end surface of the beam end component material that becomes a part of the length direction of the beam in each direction on each side surface, While improving the factory productivity and transportability by dividing the column vertically, the need for braces and the delivery of column joints is improved. Rino improvement, is not required of the field welding can be achieved.

  A non-brace steel structure building method according to the present invention is a method for building a non-brace steel frame structure composed of square pipe columns and steel beams, and is in the middle of the height of the column. Beam ends that are part of the length direction of the beam in each direction on the lower column of the lower column and the upper column to be joined to each other and at least two side surfaces of the lower end of the lower column The process of producing the column base unit with the end faces of the components welded to the factory, and the non-closed cross-section joining steel inserted into the lower column is an upper column extending downward from the upper column body made of square pipe In the factory production process, in the process of inserting the joining steel frame of the upper pillar into the lower pillar in the pillar base unit carried into the construction site, and in the state where the joining steel frame is embedded in the lower side Filling the pillar with grout and curing. Therefore, plant productivity due to the upper and lower divided structure of the column, while improving transportability, unnecessary reduction of the brace, the improvement of fit pillar joint, unnecessary reduction of field welding attained.

It is a disassembled perspective view which shows the example of the column up-down division | segmentation type | mold column and beam assembly in the non-brace steel frame building concerning one Embodiment of this invention. It is a perspective view of the assembly state of the column upper and lower division type | mold column and beam assembly. It is a sketch which shows arrangement | positioning of the column beam of the same non-brace steel structure building. It is the middle abbreviation front view of the decomposition state of the building, and the side view of a part of the pillar. It is a partially broken rear view of the column base unit of the building. It is a top view of the column base unit. It is a partial front view of the non-brace steel frame building concerning other embodiments of this invention. It is the fragmentary front view and its exploded front view of the non-brace steel-frame building concerning other embodiment of this invention.

A first embodiment of the present invention will be described with reference to FIGS.
This non-brace steel structure building is a lightweight steel prefabricated building that will be an office building, commercial facility building, industrial facility building, warehouse, house, etc., and the framework is made of lightweight steel except for floor beams . This steel structure building is composed of a square pipe column 1 and a steel beam 2 as a floor beam, and at least one column vertically divided column / beam assembly 3 having the following configuration. Have. 1 and 2 show two column upper / lower divided column / beam assemblies 3, FIG. 1 shows a state during assembly (disassembled state), and FIG. 2 shows an assembled state.

In this column vertically divided column / beam assembly 3, the column 1 is divided into a lower column 1a and an upper column 1b in the middle of the floor height, and the lower column 1a and the upper column 1b are divided into grouts 4 (FIG. 4). Are joined by a rigidly joined column joint portion 9 filled with a halftone dot), so that it becomes a column of a hybrid structure. The lower column 1a may be the length of only the portion that becomes the column base. The lower end surface of the lower column 1a is closed by a column base plate 22 joined to the lower column 1a by all-around welding or the like. For the grout 4, mortar such as non-shrink mortar, concrete, or the like is used.
In the lower column 2a, a beam end component 2a, which is a part of the beam 2 serving as a floor beam, is joined to two adjacent side surfaces at the lower end, and the lower column 1a and the beam end component 2b are connected to a column base. Unit 5 is configured. This column base unit 5 is manufactured in a factory and carried into a construction site.

  The square pipe used as the pillar 1 is a lightweight steel frame (thickness of 6 mm or less), and for example, the outer dimension is about 100 mm square. The beam 2 to be a floor beam is made of channel steel or the like, and may be either a heavy steel frame or a light steel frame. In this example, the outer dimension height (beam formation) is 200 mm, the width is 80 mm, and the web thickness is It is a heavy steel channel steel with a thickness of 7.5 mm and a flange thickness of 11 mm.

The upper column 1b includes an upper column main body 1ba made of the square pipe and a joining steel frame 1bb bonded to the lower end of the upper column main body 1ba. The joining steel frame 1bb is a member that is inserted into the lower column 1a, and a cross plate or a steel plate having a cross-shaped cross section is used. The length of the joining steel frame 1bb is the length inserted over the entire height of the lower column 1a. The lower end surface of the upper column body 1ba is closed by small plates 6 made of joined steel plates in all Shu溶contact, the upper end of the joining steel 1bb is joined by welding or the like to the small plate 6. The upper column 1b composed of the upper column main body 1ba, the fore edge plate 6 and the joining steel frame 1bb is produced in a factory.

The beam end constituting material 2b constituting the column base unit 5 is a member of an end portion obtained by dividing the beam 2 made of the grooved steel to be a floor beam into three parts, and the intermediate member divided into three parts is a beam middle part. It becomes the component 2a. The beam end component 2b and the beam intermediate component 2a are joined by bolts and nuts 21 via a joining plate 8 superimposed on the web surface.
On the beam intermediate component 2a, a stud 12 (FIGS. 1 and 2 shows only a column base) is provided, and a stiffening plate 13 is provided at a place where the stud 12 is installed.

  FIG. 3 is a plan view of a column beam showing an overall example of a non-brace steel frame building provided with the column vertical split column / beam assembly 3. This building has a module configuration in which one module is 900 mm, and column vertically divided column / beam assemblies 3 are used at four corners of the building, a plurality of locations along the outer wall, and the inside of the building.

  As shown in FIGS. 4 to 6, the beam 2 </ b> A of the ceiling portion that is a spar beam in the girder direction and the wife direction is joined to two side surfaces adjacent to the upper end of the upper column 1 b by pin joining. These beams 2A are channel steel, and the web of the beam 2A is overlapped on a joining plate 24 joined to each side surface of the upper column 1b by welding or the like and joined by bolts and nuts 25. For the beam 2A in the spar direction, for example, a lightweight steel having a height of 150 mm, a width of 75 mm, a web and a flange thickness of 4.5 mm is used. The beam 2A in the wife direction is made of, for example, a lightweight steel having a height of 250 mm, a width of 125 mm, a web thickness of 3.2 mm, and a flange thickness of 4.5 mm. The upper end surface of the upper column 1 b is closed with a top plate 26. In FIG. 4, GL indicates a design ground level, L1 indicates a floor top surface, and L2 indicates a ceiling finish surface.

Explain the construction process.
Of the columns 1, the lower column 1 a is factory-produced in the state of the column base unit 5 and transported to the building site. The column base unit 5 is disposed at a predetermined position in the construction site, the beam end component 2b of each column base unit 5 is joined to the beam intermediate component 2a, and a plurality of column base units 5 are mutually connected via the beam 2. Connected to. In this example, the column base unit 5 is installed on a foundation 20 made of a solid foundation.
When the column base unit 5 is installed at a predetermined position on the building site in this way, the steel frame 1bb for joining the upper column 1b produced at the factory is inserted into the lower column 1a of the column base unit 5 (FIGS. 1 and 4). (See arrow a).
When the connecting steel frame 1bb is inserted until the lower surface of the upper column body 1ba of the upper column 1b (the lower surface of the fore edge plate 6) contacts the upper end surface of the lower column 1a, the grout filling formed on the upper portion of the lower column 1a The grout 4 is poured from the hole 10. When the grout 4 is cured, the lower column 1a and the upper column 1b are integrated. The curing is performed by curing for about 3 days, for example.

According to the column vertically divided column / beam assembly 3 and the steel structure building having this configuration, the square pipe column 1 is divided into the lower column 1a and the upper column 1b, and the connecting steel frame provided on the upper column 1b. 1bb is inserted into the lower column 1a, and the grout 4 is filled in the lower column 1b. Therefore, the column joint portion 9 is rigidly joined.
In this way, the column joint portion 9 is rigidly joined, and the joint between the lower end of the lower column 1a and the beam 2 serving as the floor beam is a welded joint and becomes a rigid joint. The brace can be eliminated from the conventional lightweight steel structure (brace structure) while being a lightweight steel building. By omitting the brace, the degree of freedom of the plan and the design (designability) are improved, such as the window opening being freely taken.

Since the grout 4 is filled in the lower column 1a constituting the column base, local buckling hardly occurs in the column 1 which is a lightweight square pipe column, and a decrease in yield strength due to the split structure is also alleviated. Therefore, the inner diaphragm for stiffening in the junction part of the beam 2 used as a floor beam can be omitted.
The buckling of the column 1 which is a lightweight square pipe column is constrained by the filling grout 4, so that the deformation performance of the column 1 is also improved as compared with a pure steel frame.
The joining steel frame 1bb bears bending, shearing, and axial force. In this embodiment, the joining steel frame 1bb is inserted through substantially the entire lower column 1a, and the grout 4 is also substantially the same as the lower column 1a. Since the whole is filled, the rigidity of the lower column 1a is further increased.

Although the column joint portion 9 is rigidly connected, the steel frame 1bb for joining is inserted and the grout 4 is filled. Therefore, on-site welding is not required, and unlike the case of joining with a high-strength bolt, the outside of the column 1 There is no protruding part and it fits well.
Since the joining steel frame 1bb has a non-closed cross-sectional shape, particularly a cross plate, there is no space in the joining steel frame 1bb, and the filling amount of the grout 4 layer in the column cross section increases. Excellent strength and rigidity.

  Further, since the column 1 is divided into the lower column 1a and the upper column 1b, and the beam 2 joined to the lower column 1b is only the beam end component 2b, the transport size can be reduced, and the transportability can be reduced. Also excellent. Therefore, the joining of the lower column 1a and the beam end component 2b can be made by factory welding, and on-site welding is not necessary for this joined part, so that the reliability of joining is enhanced and the factory production rate in prefabrication is increased. Can do.

  FIG. 7 shows another embodiment of the present invention. This embodiment shows an example applied to a steel building having a plurality of floors (specifically, two floors). This embodiment is the same as the first embodiment shown in FIGS. 1 to 6 except for matters to be specifically described. In this embodiment, the pillar 1 and floor beam 2 on the first floor, and the pillar 1 and floor beam 2 on the second floor are provided with the vertically split column / beam assembly 3 described in the first embodiment. Has been applied.

  The beam of the ceiling part directly connected to the upper end of the column 1 of the first floor part is omitted, and the beam 2 which becomes the floor beam of the second floor part also serves as the beam of the ceiling part of the first floor part. The upper end of the pillar 1 of the first floor portion is joined to the lower end of the pillar 1 of the second floor portion in a butted state via a plate 27. The same applies to the upper floor portion and the lower floor portion, for example, between the second floor portion and the third floor portion when the building has three or more floors.

  The joining of the upper end of the column 1 on the top floor, in this example, the column 1 on the second floor and the beam 2B on the ceiling is the same as the joining of the column 1 and the beam 2A in the first embodiment.

The joint between the upper and lower columns 1 and 1 is, for example, a joint by welding in a factory.
FIG. 8 shows a specific example of a non-brace steel structure building having a multi-storey structure having three or more stories.
In the case of a two-story building, it is composed of a lowermost floor unit 31, an intermediate floor unit 32, and an uppermost floor unit 33. The lowest floor unit 31 is constituted by the column base unit 5 alone. The intermediate floor unit 32 has the upper pillar 1b of the lower floor part (first floor part in the second floor) at the lower end of the lower pillar 1a in the column base unit 5 of the upper floor part (second floor part in the second floor), It shall be joined by welding at the factory. The top floor unit 33 joins the beam end component member 2Ba of the beam 2B of the ceiling portion which is a slab beam or the like in the girder direction and the wife direction to the upper column 1b of the top floor portion (the second floor portion in a two-story building). It becomes.
For each of the floor units 31 to 33 configured as described above, an operation of sequentially inserting the joining steel frame 1bb of the upper pillar 1b of the upper floor unit into the lower pillar 1a of the lower floor unit and filling the grout 4 is performed. The filling of the grout 4 may be performed after the insertion of the units 31 to 33 on all floors is completed.
In the case of a building with three or more floors, a plurality of units 31 to 33 are provided.

  As described above, when applied to a building having two or more floors as described above, while improving the factory productivity and the transportability by the vertically divided structure of the pillar 1, it is possible to eliminate the need for the brace and to fit the column joint portion 9. Improves the need for on-site welding.

  As mentioned above, although the form for implementing this invention based on the Example was demonstrated, embodiment disclosed here is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 ... Column 1a ... Lower column 1b ... Upper column 1ba ... Upper column main body 1bb ... Joining steel frame 2 ... Beam 2a ... Beam end component 2b ... Beam intermediate component 2A, 2B ... Beam 3 on ceiling Split column / beam assembly 4 ... grout 5 ... column base unit 9 ... column joint

Claims (5)

  1. It is a non-brace steel frame building consisting of pillars made of square pipes and steel beams,
    The pillar is composed of a lower pillar and an upper pillar joined to each other in the middle of the floor height, and the upper pillar is made of a square pipe made of a non-closed cross-section joining steel frame inserted into the lower pillar. It is provided extending downward from the upper column main body, and the lower column is filled with grout in a state where the bonding steel frame is embedded, and the column joint portion between the lower column and the upper column is rigidly connected. The end surfaces of the beam end constituent members that are part of the length direction of the beam in each direction are welded to at least two side surfaces of the lower end of the lower column ,
    The joining steel frame of the upper column is inserted over the entire height of the lower column, the grout is filled from the upper end to the lower end of the lower column, and the upper column is grouted. It is unfilled, the lower end surface of the upper column body is closed by a small plate joined by all-around welding, and the upper end of the joining steel frame is welded to the small plate,
    Non-brace steel structure building.
  2.   2. The non-brace steel structure building according to claim 1, wherein a beam and a column excluding a floor beam on the lowest floor among the columns and beams constituting the building are lightweight steel frames.
  3.   The non-brace steel structure building according to claim 1 or 2, wherein the joining steel frame has a cross-shaped cross shape.
  4. It is a vertically divided column / beam assembly consisting of a lightweight steel square pipe column and a part of the beam,
    A lower column and an upper column joined to each other in the middle of a floor of a steel structure building, and the upper column is made of a square pipe made of a non-closed cross-section steel frame inserted into the lower column. The lower pillar and the upper pillar are rigidly joined by being filled with grout in a state where the joining steel frame is embedded in the lower pillar. The lower column and the beam end configuration are formed by welding end surfaces of beam end component members that are part of the beam length direction in each direction on at least two side surfaces of the lower end of the lower column. A column base unit is configured with the material, and the joining steel frame of the upper column is inserted over the entire height of the lower column, and the grout is entirely from the upper end to the lower end of the lower column. Filled, the upper column is unfilled with grout, and the lower end surface of the upper column body is entirely Is closed by a small plate which is joined by welding, pillar vertically split columns and beams assembly upper end of the joining steel to the small plate is welded.
  5. A method for constructing a non-brace steel structure composed of square pipe columns and steel beams,
    The length direction of the beam in each direction on the lower column of the lower column and the upper column that are joined to each other in the middle of the height of the column and at least two side surfaces of the lower end of the lower column The process of factory-producing a column base unit with welded end faces of the beam end components that are part of
    The non-closed cross-section joining steel inserted into the lower column is a process of factory-producing an upper column extending downward from the upper column body made of square pipe,
    The process of inserting the joining steel frame of the upper column into the lower column in the column base unit carried into the construction site;
    In the state where the joining steel frame is embedded, the lower column is filled with grout and cured,
    Viewing including the door,
    The connecting steel frame of the upper column is inserted over the entire height of the lower column, the grout is filled from the upper end to the lower end of the lower column, and the upper column does not grout. Filling, the lower end surface of the upper column main body in the column base unit is closed by a small plate joined by all-around welding, and the upper end of the joining steel frame is welded to the small plate,
    How to build a non-brace steel structure building.
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JPH0229134B2 (en) * 1984-02-24 1990-06-28 Misawa Homes Co Jogekaikenchikuyunitsutonosetsugohoho
JP2003321874A (en) * 2002-05-08 2003-11-14 Kajima Corp Coupling structure of steel-pipe column
JP2004257111A (en) * 2003-02-26 2004-09-16 Fuji Heavy Ind Ltd Unit house structure
JP2006322276A (en) * 2005-05-20 2006-11-30 Shimizu Corp Steel pipe column and its joining method
JP2011140860A (en) * 2009-12-10 2011-07-21 Misawa Homes Co Ltd Building unit and method for transporting the same
JP2015045177A (en) * 2013-08-28 2015-03-12 株式会社大林組 Connection structure for tubing and connection method for tubing

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JPS5984112U (en) * 1982-11-29 1984-06-07
JPH0229134B2 (en) * 1984-02-24 1990-06-28 Misawa Homes Co Jogekaikenchikuyunitsutonosetsugohoho
JP2003321874A (en) * 2002-05-08 2003-11-14 Kajima Corp Coupling structure of steel-pipe column
JP2004257111A (en) * 2003-02-26 2004-09-16 Fuji Heavy Ind Ltd Unit house structure
JP2006322276A (en) * 2005-05-20 2006-11-30 Shimizu Corp Steel pipe column and its joining method
JP2011140860A (en) * 2009-12-10 2011-07-21 Misawa Homes Co Ltd Building unit and method for transporting the same
JP2015045177A (en) * 2013-08-28 2015-03-12 株式会社大林組 Connection structure for tubing and connection method for tubing

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