JP2020037775A - Non-brace steel frame building construction method and column base unit - Google Patents

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

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JP2020037775A
JP2020037775A JP2018164152A JP2018164152A JP2020037775A JP 2020037775 A JP2020037775 A JP 2020037775A JP 2018164152 A JP2018164152 A JP 2018164152A JP 2018164152 A JP2018164152 A JP 2018164152A JP 2020037775 A JP2020037775 A JP 2020037775A
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column
steel frame
pillar
building
joining
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JP6446593B1 (en
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伸夫 松田
Nobuo Matsuda
伸夫 松田
山本 圭一
Keiichi Yamamoto
圭一 山本
暢 東口
Noboru Azumaguchi
暢 東口
圭介 田崎
Keisuke Tazaki
圭介 田崎
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Daiwa Lease Co Ltd
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Abstract

To provide a non-brace steel frame building, its construction method and a column base unit, capable of eliminating the need of a brace, improving the fitting of a column joint part, and eliminating the need of field welding, while improving factory productivity and transportability by a vertical split structure of a column.SOLUTION: A non-brace steel frame building is constituted of a column 1 made of a square pipe and a beam 2 made of steel. The column 1 is composed of a lower column 1a and an upper column 1b joined to each other in the middle of the story height. In the upper column 1b, a joining steel frame 1bb having a non-closed cross-sectional shape inserted into the lower column 1a extends downward from an upper column body 1ba made of a square pipe. Grout is filled in a state where the joining steel frame 1bb of the upper column 1b is buried in the lower column 1a, and a column joint part 9 between the lower column 1a and the upper column 1b is rigidly joined. A beam end component member 2b of the beam 2 is welded to the side surfaces at least two directions of the lower end of the lower column 1a.SELECTED DRAWING: Figure 1

Description

この発明は、事務所建物、商業施設建物、工業施設建物、倉庫、住宅等となる軽量鉄骨造プレハブ建物等のノンブレース鉄骨造建物、その構築方法、および柱脚ユニットに関する。   The present invention relates to a non-braced steel frame building such as a lightweight steel frame prefabricated building such as an office building, a commercial facility building, an industrial facility building, a warehouse, and a house, a method of constructing the same, and a column base unit.

前記プレハブ建物では、軽量鉄骨の角パイプ柱が用いられることが多い。柱・梁の接合部はピン接合とし、ブレースで補強する。しかし、ブレースを設けると、窓開口が取れない等、プランの自由度、および意匠上の制約が多くなる。   In the prefabricated building, a lightweight steel square pipe column is often used. The joint between the column and the beam is a pin joint and reinforced with braces. However, when the brace is provided, the degree of freedom of the plan and the restrictions on the design increase, for example, the window opening cannot be formed.

特開平11−50539号公報JP-A-11-50539 特開平8−311991号公報JP-A-8-311991 特開平9−317003号公報JP-A-9-317003 特開2002−242303号公報JP-A-2002-242303 特開平6−26098号公報JP-A-6-26098 特開2016−159296号公報JP-A-2006-159296 特開平5−39632号公報JP-A-5-39632 特開2002−129658号公報JP 2002-129658 A

柱・梁接合部を溶接等で剛接合とすれば、ブレースを無くすことができる。しかし、工場生産率を高くしたり、輸送サイズを小さくするためには、柱を階高の途中で上下に分割し、柱継手で接合することが必要となる。例えば、分割された下側柱と、各方向の梁の端部を構成する短い梁とを溶接した柱脚ユニットを工場生産し、現場に輸送する。これによれば、工場生産率を上げ、輸送サイズも小さくできる。
しかし、柱継手を用いる場合、柱・梁接合部が剛接合とされていても、柱継手が剛接合となっていなければ建物の剛性が不足し、ブレースによる補強が必要となる。
柱継手を剛接合とする構成として、角パイプ柱を高力ボルトで接合する構成があるが、高力ボルトで接合するには補強プレートを重ねる必要があり、柱面よりも外側に補強プレートや高力ボルトの頭部等が突出し、納まりが悪くなる。
溶接を行えば剛接合とできるが、現場溶接は不確実な要素があり、接合の信頼性に欠けるため、採用できない。
If the column / beam joint is made rigid by welding or the like, the brace 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 height and join them with column joints. For example, a column base unit obtained by welding a divided lower column and a short beam forming an end of a beam in each direction is factory-produced and transported to a 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 joined, the rigidity of the building is insufficient if the column joint is not rigidly joined, and reinforcement by braces is required.
There is a configuration in which the column joints are rigidly joined, in which square pipe columns are joined with high-strength bolts.However, in order to join with high-strength bolts, it is necessary to overlap a reinforcing plate, and a reinforcing plate or The head of the high-strength bolt, etc., protrudes, making it difficult to fit.
Rigid joining can be achieved by welding, but field welding cannot be adopted because of uncertain factors and lack of joint reliability.

なお、鋼管柱の継手構造としては、各種の提案が成されている(例えば、特許文献1〜8)。例えば、接続部に鉄筋を介在させ、鋼管柱の全体にコンクリートを充填するもの(特許文献1)や、接続部に連結用柱を挿入し、グラウトを充填するもの(特許文献2)等も提案されている。
しかし、特許文献1は鋼管柱の全体にコンクリートを充填する鋼管柱であって、コンクリート使用量が多く、また接合部に鉄筋を配筋する作業に手間がかかる。
特許文献2は上側柱に設けた短い鋼管の継手部材を下側柱に差し込み、継手部材の外周と下側柱との間にグラウトを充填する構成であるが、継手部材が閉鎖断面であって内部は空間のままとされる。そのため、グラウトの充填量が少なくて、グラウト層の割れ等が懸念され、継手部の剛性を高めることが難しい。
他の特許文献3〜8は、いずれも、接合作業に手間がかかるか、または柱面から突出部分が生じて納まりが悪い等の問題がある。
Various proposals have been made for a joint structure of a steel pipe column (for example, Patent Documents 1 to 8). For example, a proposal is also proposed in which concrete is filled in the entire steel pipe column with a reinforcing bar interposed in the connection part (Patent Document 1), and a method in which a connecting column is inserted into the connection part and grout is filled (Patent Document 2). Have been.
However, Patent Literature 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 the work of arranging a reinforcing bar at a joint takes time.
Patent Document 2 discloses a configuration in which a short steel pipe joint member provided on an upper column is inserted into a 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 as a space. For this reason, the filling amount of the grout is small, and 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 have problems such as that the joining work takes time, or a protruding portion is formed from the pillar surface, and the fitting is poor.

この発明は、上記課題を解消するものであり、その目的は、柱の上下分割構造による工場生産性、運搬性の向上を図りながら、ブレースの不要化、柱継手部の納まりの向上、現場溶接の不要化が図れるノンブレース鉄骨造建物、その構築方法、および柱脚ユニットを提供することである。   SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to eliminate the need for braces, improve the fitting of column joints, and improve on-site welding while improving factory productivity and transportability by means of a vertical split structure of columns. It is an object of the present invention to provide a non-braced steel frame building capable of eliminating the need for a steel frame, a construction method thereof, and a column base unit.

この発明のノンブレース鉄骨造建物は、角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物であって、
前記柱が階高の途中で互いに接合される下側柱と上側柱とでなり、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されて、前記下側柱と前記上側柱との柱継手部が剛接合とされ、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接される。
The non-braced steel frame building of the present invention is a non-braced steel frame building composed of square pipe columns and steel frame beams,
The pillar is composed of a lower pillar and an upper pillar which are joined to each other in the middle of the floor height, and the upper pillar has a joining steel frame having a non-closed cross-sectional shape inserted into the lower pillar, made of a square pipe. It is provided extending downward from the upper column main body, the lower column is filled with grout in a state in which the joining steel frame is embedded, and the column joint portion between the lower column and the upper column is rigidly joined. Then, the end surfaces of the beam end constituting materials that are part of the beam in the length direction in each direction are welded to at least two side surfaces of the lower end of the lower pillar.

この構成によると、角パイプ柱が下側柱と上側柱とに分割され、上側柱に設けられた接合用鉄骨が下側柱内に差し込まれ、下側柱にグラウトが充填される。そのため、柱継手部が剛接合となり、水平力を負担できる。柱継手部が剛接合となり、かつ下側柱の下端と梁との接合が溶接で接合され、剛接合となるため、ブレースが省略できる。ブレースの省略により、窓開口が自由に採れるなど、プランの自由度、意匠性(デザイン性)が向上する。柱継手部を剛接合とするが、接合用鉄骨を差し込み、グラウトを充填する構成であるため、現場溶接が不要で、また高力ボルトで接合する場合と異なり、柱の外に突出する部分が生じなくて納まりが良い。接合用鉄骨は非閉鎖断面形状であるため、グラウトの層の充填量が多く得られ、グラウト部分の強度、剛性にも優れる。
また、柱が下側柱と上側柱とに分割され、下側柱に接合される梁は梁端部構成材の部分のみであるため、輸送サイズが小さくでき、運搬性にも優れる。そのため、下側柱と梁端部構成材の接合が工場溶接とでき、この接合部についても現場溶接が不要で、接合の信頼性が高められる。
According to this configuration, the square pipe column is divided into the lower column and the upper column, the joining steel frame provided in the upper column is inserted into the lower column, and the lower column is filled with grout. Therefore, the column joint is rigidly joined, and can bear the horizontal force. Since the column joint 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 (design) are improved, for example, the window opening can be freely taken. The column joints are rigidly joined, but since the joining steel frame is inserted and grout is filled, on-site welding is unnecessary, and unlike the case of joining with high-strength bolts, there are parts that protrude outside the column. It does not occur and fits well. Since the joining steel frame has a non-closed cross-sectional shape, a large filling amount of the grout layer can be obtained, and the strength and rigidity of the grout portion are excellent.
Further, since the pillar is divided into a lower pillar and an upper pillar, and the beam to be joined to the lower pillar is only a portion of the beam end component material, the transport size can be reduced and the transportability is excellent. For this reason, the lower column and the beam end component can be joined by factory welding, and this joint does not require on-site welding, and the joining reliability is improved.

この発明のノンブレース鉄骨造建物において、この建物を構成する柱および梁のうち、最下階の床梁を除く梁および柱が軽量鉄骨であってもよい。
下側柱に上側柱の接合用鉄骨を差し込むと共にグラウトを充填して剛接合とする構成であるため、柱が軽量鉄骨の角パイプであっても剛接合とでき、軽量鉄骨の柱および梁を用いる安価な鉄骨造建物としながら、上記の工場生産性、運搬性の向上、ブレースの不要化、柱継手部の納まりの向上、現場溶接の不要化が図れる。
最下階の床梁は、軽量鉄骨と重量鉄骨のいずれであってもよい。軽量鉄骨造の建物であっても、最下階の床梁は土台を兼ねる場合があって、重量鉄骨とされる場合が多く、このような軽量鉄骨造建物に適用しても、上記各利点が得られる。
In the non-brace steel frame building of the present invention, among the columns and beams constituting the building, the beams and columns other than the floor beam on the lowest floor may be lightweight steel frames.
Because the lower column is connected to the upper column by inserting the connecting steel frame into the lower column and filled with grout to form a rigid connection, the column can be rigidly connected even if the column is a lightweight steel frame square pipe. While using an inexpensive steel-framed building, it is possible to improve the above-described factory productivity and transportability, eliminate the need for braces, improve the accommodation of column joints, and eliminate the need for on-site welding.
The floor beam on the lowest floor may be either a light steel frame or a heavy steel frame. Even in the case of a lightweight steel frame building, the floor beam on the lowest floor may also serve as a base, and is often made of a heavy steel frame. Is obtained.

前記接合用鉄骨は、断面形状十字形、例えば十字プレートであってもよい。
前記接合用鉄骨は、種々の断面形状の物が採用できるが、断面形状が十字形であると、各方向の水平力を上側柱と下側柱の間で伝達でき、かつグラウトの充填を阻害し難く、グラウトの充填性にも優れる。
The joining steel frame may be a cross-shaped cross section, for example, a cross plate.
The joining steel frame may have various cross-sectional shapes, but if the cross-sectional shape is a cross shape, horizontal force in each direction can be transmitted between the upper column and the lower column, and filling of grout is hindered. It is difficult to grind and has excellent grout filling properties.

この発明の柱上下分割型柱・梁接合体は、軽量鉄骨の角パイプ製の柱と梁の一部とでなる柱・梁接合体であって、
鉄骨造建物の階高の途中で互いに接合される下側柱と上側柱とを備え、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されることで、前記下側柱と前記上側柱とが剛接合され、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接されて前記下側柱と前記梁端部構成材とで柱脚ユニットを構成する。
The column vertical beam type column / beam joint of the present invention is a column / beam joint composed of a column and a beam made of a lightweight steel square pipe,
A lower pillar and an upper pillar joined to each other in the middle of the floor height of the steel frame building, wherein the upper pillar is formed of a square pipe made of a joining steel frame having a non-closed cross-sectional shape inserted into the lower pillar. The lower column and the upper column are rigidly joined by being provided to extend downward from the upper column main body and filling the lower column with grout in a state in which the joining steel frame is embedded, At least two side surfaces of the lower end of the lower column are welded with end surfaces of beam end components that become a part of the beam length direction in each direction, and the lower column and the beam end configuration are welded. The column base unit is composed of the materials.

この構成の柱・梁接合体を用いると、この発明のノンブレース鉄骨造建物につき説明したように、柱の上下分割構造による工場生産性、運搬性の向上を図りながら、ブレースの不要化、柱継手部の納まりの向上、現場溶接の不要化が図れる。   By using the column / beam joint having this configuration, as described for the non-braced steel frame building of the present invention, the brace is unnecessary and the column is improved while improving the factory productivity and the transportability by the vertical split structure of the column. It is possible to improve the fitting of the joint and eliminate the need for on-site welding.

この発明のノンブレース鉄骨造建物の構築方法は、角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物を構築する方法であって、
前記柱の階高の途中で互いに接合される下側柱と上側柱のうちの下側柱と、この下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接された柱脚ユニットを工場生産する過程と、
前記下側柱内に差し込まれる非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びた上側柱を工場生産する過程と、
建築現場に搬入された前記柱脚ユニットにおける前記下側柱に、前記上側柱の前記接合用鉄骨を差し込む過程と、
前記接合用鉄骨が埋め込まれる状態に、前記下側柱にグラウトを充填し、硬化させる過程、
とを含む。
The method of constructing a non-braced steel frame building of the present invention is a method of constructing a non-braced steel frame building composed of square pipe columns and steel frame beams,
The lower pillar of the lower pillar and the upper pillar which are joined to each other in the middle of the floor height of the pillar, and the length direction of the beam in each direction on at least two side surfaces of the lower end of the lower pillar. A process of factory-manufacturing a column base unit in which the end faces of the beam end components constituting a part of the welding are welded,
A process of factory-producing an upper column extending downward from an upper column main body made of a square pipe, with a joining steel frame having a non-closed cross-sectional shape inserted into the lower column,
A step of inserting the joining steel frame of the upper column into the lower column of the column base unit carried into the building site,
Filling the lower pillars with grout in a state in which the joining steel frame is embedded, and curing.
And

このノンブレース鉄骨造建物の構築方法によると、この発明のノンブレース鉄骨造建物につき説明したように、柱の上下分割構造による工場生産性、運搬性の向上を図りながら、ブレースの不要化、柱継手部の納まりの向上、現場溶接の不要化が図れる。   According to the method of constructing a non-braced steel frame building, as described for the non-braced steel frame building according to the present invention, the brace is not required while improving the factory productivity and the transportability by the vertically divided structure of the columns. It is possible to improve the fitting of the joint and eliminate the need for on-site welding.

この発明のノンブレース鉄骨造建物は、角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物であって、前記柱が階高の途中で互いに接合される下側柱と上側柱とでなり、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されて、前記下側柱と前記上側柱との柱継手部が剛接合とされ、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接されたため、柱の上下分割構造による工場生産性、運搬性の向上を図りながら、ブレースの不要化、柱継手部の納まりの向上、現場溶接の不要化が図れる。   The non-braced steel frame building of the present invention is a non-braced steel frame building composed of square pipe columns and steel frame beams, wherein the columns are joined to each other in the middle of the floor height. And an upper column, wherein the upper column is provided with a joining steel frame having a non-closed cross-sectional shape inserted into the lower column, extending downward from an upper column main body made of a square pipe, and The grout is filled in a state in which the joining steel frame is embedded, and the column joint portion between the lower column and the upper column is rigidly joined, and at least two side surfaces of the lower end of the lower column are provided. Since the end faces of the beam end components, which become part of the beam length direction in each direction, are welded, the need for braces is eliminated while improving factory productivity and transportability due to the vertical split structure of the columns. In addition, the fitting of the column joint can be improved, and the need for on-site welding can be eliminated.

この発明の柱上下分割型柱・梁接合体は、軽量鉄骨の角パイプ製の柱と梁の一部とでなる柱・梁接合体であって、鉄骨造建物の階高の途中で互いに接合される下側柱と上側柱とを備え、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されることで、前記下側柱と前記上側柱とが剛接合され、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接されて前記下側柱と前記梁端部構成材とで柱脚ユニットを構成するため、柱の上下分割構造による工場生産性、運搬性の向上を図りながら、ブレースの不要化、柱継手部の納まりの向上、現場溶接の不要化が図れる。   A column-beam split type column / beam joint according to the present invention is a column / beam joint comprising a column and a beam made of a lightweight steel square pipe, and is joined to each other in the middle of the floor height of a steel frame building. A lower pillar and an upper pillar, wherein the upper pillar is provided with a joining steel frame having a non-closed cross-sectional shape inserted into the lower pillar, extending downward from an upper pillar body made of a square pipe. The lower column is filled with grout in a state in which the joining steel frame is embedded, so that the lower column and the upper column are rigidly joined, and at least two directions of the lower end of the lower column. To form a column base unit with the lower column and the beam end component, the end surfaces of the beam end components that become a part of the beam length direction in each direction are welded to the side surfaces, Eliminating the need for braces and delivering column joints while improving factory productivity and Rino improvement, is not required of the field welding can be achieved.

この発明のノンブレース鉄骨造建物の構築方法は、角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物を構築する方法であって、前記柱の階高の途中で互いに接合される下側柱と上側柱のうちの下側柱と、この下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接された柱脚ユニットを工場生産する過程と、前記下側柱内に差し込まれる非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びた上側柱を工場生産する過程と、建築現場に搬入された前記柱脚ユニットにおける前記下側柱に、前記上側柱の前記接合用鉄骨を差し込む過程と、前記接合用鉄骨が埋め込まれる状態に、前記下側柱にグラウトを充填し、硬化させる過程、とを含むため、柱の上下分割構造による工場生産性、運搬性の向上を図りながら、ブレースの不要化、柱継手部の納まりの向上、現場溶接の不要化が図れる。   The method of constructing a non-braced steel framed building of the present invention is a method of constructing a non-braced steel framed building composed of a square pipe column and a steel frame beam. A lower pillar of the lower pillar and the upper pillar which are joined to each other, and a beam end portion which is a part of the length direction of the beam in each direction on at least two side surfaces of the lower end of the lower pillar. A process of factory-producing a column base unit with end faces of constituent materials welded thereto, and an upper column in which a joining steel frame having a non-closed cross-sectional shape inserted into the lower column extends downward from an upper column main body made of a square pipe. A factory production process, a step of inserting the joining steel frame of the upper column into the lower column of the column base unit carried into the building site, and a step of embedding the joining steel frame into the lower side. Filling the columns 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.

この発明の一実施形態にかかるノンブレース鉄骨造建物における柱上下分割型柱・梁接合体の例を示す分解斜視図である。It is an exploded perspective view showing an example of a column up-and-down division type column / beam joint in a non-brace steel frame building concerning one embodiment of the present invention. 同柱上下分割型柱・梁接合体の組立状態の斜視図である。It is a perspective view of the assembled state of the same column vertical division | segmentation type column / beam joint body. 同ノンブレース鉄骨造建物の柱梁の配置を示す伏図である。It is a top view which shows the arrangement | positioning of the beam of the non-brace steel frame building. 同建物の分解状態の中間省略正面図、およびその一部の柱の側面図である。FIG. 2 is a front view of an intermediate omitted state of the building and a side view of some pillars thereof. 同建物の柱脚ユニットの一部破断背面図である。It is a fragmentary rear view of the column base unit of the same building. 同柱脚ユニットの平面図である。It is a top view of the column base unit. この発明の他の実施形態にかかるノンブレース鉄骨造建物の部分正面図である。It is a fragmentary front view of the non-brace steel frame building concerning other embodiments of this invention. この発明のさらに他の実施形態にかかるノンブレース鉄骨造建物の部分正面図およびその分解正面図である。It is the fragmentary front view of the non-brace steel frame building concerning another embodiment of this invention, and its disassembled front view.

この発明の第1の実施形態を図1〜図6と共に説明する。
このノンブレース鉄骨造建物は、事務所建物、商業施設建物、工業施設建物、倉庫、住宅等となる軽量鉄骨造プレハブ建物であって、床梁を除き、軽量形鋼で骨組みが構成されている。この鉄骨造建物は、角パイプ製の柱1と、床梁となる鉄骨製の梁2とで骨組みが構成され、次の構成の柱上下分割型柱・梁接合体3を少なくとも1か所に有する。図1,図2は、2箇所の柱上下分割型柱・梁接合体3を示し、図1は組立途中の状態(分解状態)を、図2は組立完了状態をそれぞれ示す。
A first embodiment of the present invention will be described with reference to FIGS.
This non-braced steel frame building is a lightweight steel frame prefabricated building that becomes an office building, a commercial facility building, an industrial facility building, a warehouse, a house, and the like. . In this steel frame building, a frame is composed of a pillar 1 made of a square pipe and a steel beam 2 serving as a floor beam, and a column-beam split type column / beam joint body 3 having the following configuration is provided in at least one place. Have. FIGS. 1 and 2 show two column-vertical split type column / beam joints 3 at a position, FIG. 1 shows a state in the middle of assembly (disassembled state), and FIG.

この柱上下分割型柱・梁接合体3は、柱1が階高の途中で下側柱1aと上側柱1bとに分割され、下側柱1aと上側柱1bとが、グラウト4(図4に網点で図示した部分)の充填された剛接合の柱継手部9で接合され、いわばハイブリッド構造の柱となる。下側柱1aは、柱脚となる部分のみの長さであってもよい。下側柱1aの下端面は、全周溶接などで下側柱1aに接合された柱脚プレート22により閉ざされている。前記グラウト4には無収縮モルタル等のモルタルやコンクリート等が用いられる。
下側柱2aは、床梁となる梁2の一部である梁端部構成材2aが下端の隣合う2側面に接合され、前記下側柱1aと梁端部構成材2bとで柱脚ユニット5が構成される。この柱脚ユニット5は工場生産され、建築現場に搬入される。
In this column-vertical split type column / beam joint 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 grouted 4 (FIG. 4). Are joined by a rigid joint column joint portion 9 filled with a halftone dot (a part shown by a halftone dot), so to say, a column having a hybrid structure. The lower pillar 1a may have a length of only a portion serving as a pillar. The lower end surface of the lower column 1a is closed by a column base plate 22 joined to the lower column 1a by welding all around. The grout 4 is made of mortar such as non-shrink mortar or concrete.
In the lower pillar 2a, a beam end component 2a, which is a part of the beam 2 to be a floor beam, is joined to two adjacent side surfaces at the lower end, and the lower pillar 1a and the beam end component 2b are used as pillar bases. The unit 5 is configured. The column base unit 5 is produced in a factory and is carried into a construction site.

柱1となる角パイプは、軽量鉄骨(厚さが6mm以下)であり、例えば外寸が100mm角程度の太さのものが用いられている。床梁となる梁2は、溝形鋼等からなり、重量鉄骨および軽量鉄骨のいずれでもよいが、この例では、外寸の高さ(梁成)が200mm、幅が80mm、ウェブ厚さが7.5mm、フランジ厚さ11mmの重量鉄骨の溝形鋼とされている。   The square pipe to be the column 1 is a lightweight steel frame (having a thickness of 6 mm or less), for example, having a thickness of about 100 mm square. The beam 2 serving as 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 (beam height) is 200 mm, the width is 80 mm, and the web thickness is It is a heavy steel channel steel of 7.5 mm and a flange thickness of 11 mm.

上側柱1bは、前記角パイプからなる上側柱本体1baと、この上側柱本体1baの下端に接合された接合用鉄骨1bbとで構成される。接合用鉄骨1bbは、下側柱1aに差し込まれる部材であり、断面十字形とされた十字プレートまたは形鋼が用いられている。接合用鉄骨1bbの長さは、例えば下側柱1aの全体高さに渡って差し込まれる長さとされる。上側柱本体1baの下端面は、全周溶接等で接合された鋼板製の小口プレート6によって閉鎖され、この小口プレート6に接合用鉄骨1bbの上端が溶接等で接合されている。上側柱本体1baと小口プレート6と接合用鉄骨1bbとでなる上側柱1bは、工場で生産される。   The upper pillar 1b is composed of an upper pillar main body 1ba made of the square pipe and a joining steel frame 1bb joined to a lower end of the upper pillar main body 1ba. The joining steel frame 1bb is a member to be inserted into the lower column 1a, and a cross plate or a shaped steel having a cross-shaped cross section is used. The length of the joining steel frame 1bb is, for example, a length inserted over the entire height of the lower column 1a. The lower end surface of the upper column main body 1ba is closed by a small plate 6 made of a steel plate joined by full circumference welding or the like, and the upper end of the joining steel frame 1bb is joined to the small plate 6 by welding or the like. 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 at a factory.

前記柱脚ユニット5を構成する梁端部構成材2bは、床梁となる前記溝形鋼からなる梁2を、3分割した端部の部材であり、前記3分割した中間の部材は梁中間構成材2aとなる。梁端部構成材2bと梁中間構成材2aとは、ウェブ面に重ねられた接合プレート8を介して、ボルト・ナット21により接合される。
梁中間構成材2a上には、間柱12(図1,図2は柱脚部のみ図示)が設置され、この間柱12の設置箇所に補剛用プレート13が設けられている。
The beam end component 2b constituting the column base unit 5 is a member of an end part obtained by dividing the beam 2 made of the channel steel to be a floor beam into three parts, and the intermediate member obtained by dividing the three parts is a beam intermediate 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 superposed on the web surface.
Studs 12 (only the column bases are shown in FIGS. 1 and 2) are installed on the beam intermediate component 2a, and a stiffening plate 13 is provided at the position where the studs 12 are installed.

図3は、前記柱上下分割型柱・梁接合体3を設けたノンブレース鉄骨造建物の全体例を示す柱梁の伏図である。この建物は、1モジュールが900mmのモジュール構成とされ、建物の四隅と、外壁に沿う複数箇所と、建物内部とに柱上下分割型柱・梁接合体3が用いられている。   FIG. 3 is a plan view of a column and a beam showing an example of an entire non-braced steel frame building provided with the column vertical beam type column / beam joint body 3. In this building, one module has a module configuration of 900 mm, and column / column split type column / beam joints 3 are used at the four corners of the building, at multiple locations along the outer wall, and inside the building.

図4〜図6に示すように、上側柱1bの上端の隣合う2側面に、桁方向および妻方向の小屋梁等となる天井部の梁2Aがピン接合で接合されている。これらの梁2Aは溝形鋼であり、上側柱1bの各側面に溶接等で接合した接合プレート24に梁2Aのウェブを重ね、ボルト・ナット25で接合されている。前記桁方向の梁2Aは、例えば、高さ150mm、幅75mm、ウェブおよびフランジ厚さが4.5mmの軽量形鋼が使用されている。妻方向の梁2Aは、例えば高さ250mm、幅125mm、ウェブ厚さ3.2mm、フランジ厚さ4.5mmの軽量形鋼が用いられている。上側柱1bの上端面は、トッププレート26で閉じられている。なお、図4において、GLは設計グランドレベルを、L1は床天面を、L2は天井仕上げ面をそれぞれ示す。   As shown in FIGS. 4 to 6, a beam 2 </ b> A of a ceiling portion serving as a shed beam in a girder direction and a wife direction is joined to two adjacent side surfaces at the upper end of the upper pillar 1 b by pin joining. These beams 2A are channel steel, and the webs of the beams 2A are superimposed on a joining plate 24 joined to each side surface of the upper column 1b by welding or the like, and are joined by bolts and nuts 25. For the beam 2A in the girder direction, for example, a lightweight section steel having a height of 150 mm, a width of 75 mm, and a web and flange thickness of 4.5 mm is used. For the beam 2A in the wife direction, for example, a lightweight section 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 is used. The upper end surface of the upper pillar 1b is closed by 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.

施工過程を説明する。
柱1のうち、下側柱1aは、前記柱脚ユニット5の状態に工場生産され、建築現場に運搬される。柱脚ユニット5は、建築現場における所定位置に配置され、各柱脚ユニット5の梁端部構成材2bが梁中間構成材2aと接合され、複数の柱脚ユニット5が梁2を介して相互に接続される。この例では、柱脚ユニット5は、ベタ基礎からなる基礎20上に設置される。
このように柱脚ユニット5が建築現場の所定位置に設置されると、柱脚ユニット5の下側柱1aに、工場生産された上側柱1bの接合用鉄骨1bbを差し込む(図1、図4の矢印
a参照)。
上側柱1bの上側柱本体1baの下面(小口プレート6の下面)が下側柱1aの上端面に接するまで接合用鉄骨1bbが差し込まれると、下側柱1aの上部に形成されているグラウト充填孔10からグラウト4を流し込む。このグラウト4が硬化すると下側柱1aと上側柱1bとが一体化する。前記硬化は、例えば3日程度の養生で行われる。
The construction process will be described.
Of the columns 1, the lower column 1a is factory-produced in the state of the column base unit 5 and transported to a construction site. The column base unit 5 is arranged at a predetermined position in the building site, the beam end component 2b of each column base unit 5 is joined to the intermediate beam component 2a, and the plurality of column base units 5 are connected to each other 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 in the building site in this way, the joining steel frame 1bb of the factory-produced upper column 1b is inserted into the lower column 1a of the column base unit 5 (FIGS. 1 and 4). Arrow a).
When the joining steel frame 1bb is inserted until the lower surface of the upper column main body 1ba of the upper column 1b (the lower surface of the edge plate 6) contacts the upper end surface of the lower column 1a, grout filling formed on the upper portion of the lower column 1a is performed. The grout 4 is poured from the hole 10. When the grout 4 hardens, the lower pillar 1a and the upper pillar 1b are integrated. The curing is performed, for example, by curing for about three days.

この構成の柱上下分割型柱・梁接合体3および鉄骨造建物によると、角パイプ製の柱1が下側柱1aと上側柱1bとに分割され、上側柱1bに設けられた接合用鉄骨1bbが下側柱1a内に差し込まれ、下側柱1bにグラウト4が充填される。そのため、柱継手部9が剛接合となる。
このように柱継手部9が剛接合となり、かつ下側柱1aの下端と床梁となる梁2との接合が溶接による接合であって剛接合となるため、柱1をキャンチ柱として水平力を負担させることができて、軽量鉄骨製の建物でありながら、従来の軽量鉄骨造(ブレース構造)からブレースを無くすことができる。ブレースの省略により、窓開口が自由に採れるなど、プランの自由度、意匠性(デザイン性)が向上する。
According to the column-vertical split type column / beam joint 3 and the steel-frame building having this configuration, the column 1 made of a square pipe 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 lower pillar 1a, and grout 4 is filled in lower pillar 1b. Therefore, the column joint portion 9 is rigidly joined.
As described above, the column joint portion 9 is rigidly connected, and the lower end of the lower column 1a and the beam 2 serving as the floor beam are connected by welding and are rigidly connected. , And the brace can be eliminated from the conventional lightweight steel structure (brace structure) while the building is made of a lightweight steel frame. By omitting the brace, the degree of freedom of the plan and the design (design) are improved, for example, the window opening can be freely taken.

柱脚部を構成する下側柱1aにグラウト4を充填するため、軽量角パイプ柱である柱1に局部座屈が起こり難く、分割構造としたことによる耐力低下も緩和される。そのため、床梁となる梁2の接合部における補剛用の内ダイヤフラムを省略することができる。
充填グラウト4により、軽量角パイプ柱である柱1の座屈が拘束されるため、柱1の変形性能も純鉄骨よりも向上する。
接合用鉄骨1bbは、曲げ、せん断、および軸力を負担することになり、この実施形態では、接合用鉄骨1bbは下側柱1aの略全体に挿通され、グラウト4も下側柱1aの略全体に充填されるため、下側柱1aの剛性がより高められる。
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 the reduction in proof stress due to the divided structure is alleviated. Therefore, the inner diaphragm for stiffening at the joint of the beams 2 serving as floor beams can be omitted.
Since the buckling of the column 1, which is a lightweight square pipe column, is restrained by the filling grout 4, the deformability of the column 1 is also improved as compared with a pure steel frame.
The joining steel frame 1bb bears bending, shear, 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 entirety is filled, the rigidity of the lower column 1a is further increased.

柱継手部9を剛接合とするが、接合用鉄骨1bbを差し込み、グラウト4を充填する構成であるため、現場溶接が不要で、また高力ボルトで接合する場合と異なり、柱1の外に突出する部分が生じなくて納まりが良い。
接合用鉄骨1bbは非閉鎖断面形状であり、特に十字プレートであるため、接合用鉄骨1bb内に空間が生じることがなくて柱断面におけるグラウト4の層の充填量が多くなり、グラウト4の部分の強度、剛性にも優れる。
Although the column joint portion 9 is rigidly joined, since the joining steel frame 1bb is inserted and the grout 4 is filled, no on-site welding is required, and unlike the case of joining with a high-strength bolt, the column joint portion 9 is provided outside the column 1. There is no protruding part, so it fits well.
Since the joining steel frame 1bb has a non-closed cross-sectional shape, and in particular, is 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, and the portion of the grout 4 Excellent strength and rigidity.

また、柱1が下側柱1aと上側柱1bとに分割され、下側柱1bに接合される梁2は梁端部構成材2bの部分のみであるため、輸送サイズが小さくでき、運搬性にも優れる。そのため、下側柱1aと梁端部構成材2bの接合が工場溶接とでき、この接合部についても現場溶接が不要で、接合の信頼性が高められ、かつプレハブ化における工場生産率を高めることができる。   Further, since the column 1 is divided into a lower column 1a and an 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. For this reason, the lower column 1a and the beam end component 2b can be joined by factory welding, and this joint does not require on-site welding, which increases the reliability of joining and increases the factory production rate in the prefabrication. Can be.

図7はこの発明の他の実施形態を示す。この実施形態は、複数階建て(具体的には2階建て)の鉄骨造建物に適用した例を示す。この実施形態は、特に説明する事項を除き、図1〜図6に示す第1の実施形態と同様である。この実施形態では、1階部分の柱1と床の梁2、および2階の柱1と床の梁2とに、第1の実施形態で説明した柱上下分割型柱・梁接合体3が適用されている。   FIG. 7 shows another embodiment of the present invention. This embodiment shows an example applied to a multi-story (specifically, two-story) steel frame building. This embodiment is the same as the first embodiment shown in FIGS. 1 to 6 except for matters to be particularly described. In this embodiment, the column-column split type column / beam joint 3 described in the first embodiment is attached to the column 1 on the first floor and the beam 2 on the floor, and the column 1 on the second floor and the beam 2 on the floor. Have been applied.

1階部分の柱1の上端に直接に接続する天井部の梁は省略され、2階部分の床梁となる梁2が、1階部分の天井部の梁を兼用する。1階部分の柱1の上端は、2階部分の柱1の下端に、プレート27を介して突き合わせ状態に接合される。3階建て以上の建物とする場合における、上階部分と下階部分、例えば2階部分と3階部分間においても、上記と同様である。   The beam on the ceiling directly connected to the upper end of the column 1 on the first floor is omitted, and the beam 2 serving as the floor beam on the second floor also serves as the beam on the ceiling on the first floor. The upper end of the pillar 1 on the first floor portion is joined to the lower end of the pillar 1 on the second floor portion via a plate 27 in an abutting state. The same applies to an upper floor portion and a lower floor portion, for example, between a second floor portion and a third floor portion in a case where the building has three or more floors.

最上階、この例では2階部分の柱1の上端と天井部の梁2Bの接合は、第1の実施形態における柱1と梁2Aの接合と同様である。   The connection between 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 connection between the column 1 and the beam 2A in the first embodiment.

上下階の柱1,1間の接合は、例えば工場での溶接による接合とされる。
図8は、3階建て以上の多層階架構であるノンブレース鉄骨造建物の具体例を示す。
2階建ての場合、最下階ユニット31と、中間階ユニット32と、最上階ユニット33とで構成される。最下階ユニット31は、前記柱脚ユニット5の単独で構成される。中間階ユニット32は、上階部分(2階建てでは2階部分)の柱脚ユニット5における下側柱1aの下端に、下階部分(2階建てでは1階部分)の上側柱1bを、工場で溶接等により接合されたものとする。最上階ユニット33は、最上階部分(2階建てでは2階部分)の
上側柱1bに、桁方向および妻方向の小屋梁等となる天井部の梁2Bの梁端部構成部材2Baを接合してなる。
このように構成された各階ユニット31〜33につき、下階のユニットの下側柱1aに上階のユニットの上側柱1bの接合用鉄骨1bbを差し込みむと共にグラウト4を充填する作業を順次行う。グラウト4の充填は、全ての階のユニット31〜33の相互に前記差し込みが完了してから行ってもよい。
3階以上の建物の場合は、ユニット31〜33を複数設ける。
The joining between the columns 1 and 1 on the upper and lower floors is, for example, joining by welding at a factory.
FIG. 8 shows a specific example of a non-braced steel frame building which is a multi-story structure of three stories or more.
In the case of a two-story building, it is composed of a lowest floor unit 31, an intermediate floor unit 32, and a top floor unit 33. The lowest floor unit 31 is constituted solely by the column base unit 5. The middle floor unit 32 includes an upper pillar 1b of a lower floor portion (a first floor portion of a two-story building) at a lower end of the lower pillar 1a of the pillar base unit 5 of an upper floor portion (a two-story portion of a two-story building). Assume that they were joined by welding at the factory. The top floor unit 33 joins the beam end component 2Ba of the beam 2B of the ceiling, which is a hut beam in the girder direction and the wife direction, to the upper pillar 1b of the top floor part (the second floor part in the case of a two-story building). It becomes.
For each of the floor units 31 to 33 configured as described above, the work of 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 sequentially performed. The grout 4 may be filled after the units 31 to 33 on all floors have been inserted into each other.
In the case of a building having three or more floors, a plurality of units 31 to 33 are provided.

このように2階以上の建物に適用した場合も、上記と同様に、柱1の上下分割構造による工場生産性、運搬性の向上を図りながら、ブレースの不要化、柱継手部9の納まりの向上、現場溶接の不要化が図れる。   As described above, in the case where the present invention is applied to a building having two or more floors, the brace is not required and the column joint 9 can be accommodated while improving the factory productivity and the transportability by the vertically divided structure of the column 1 as described above. Improvement and eliminates the need for on-site welding.

以上、実施例に基づいて本発明を実施するための形態を説明したが、ここで開示した実施の形態はすべての点で例示であって制限的なものではない。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The embodiments for carrying out the present invention have been described based on the embodiments. However, the embodiments disclosed herein are illustrative in all aspects and not restrictive. 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.

1…柱
1a…下側柱
1b…上側柱
1ba…上側柱本体
1bb…接合用鉄骨
2…梁
2a…梁端部構成材
2b…梁中間構成材
2A,2B…天井部の梁
3…柱上下分割型柱・梁接合体
4…グラウト
5…柱脚ユニット
9…柱継手部
DESCRIPTION OF SYMBOLS 1 ... pillar 1a ... lower pillar 1b ... upper pillar 1ba ... upper pillar main body 1bb ... joining steel frame 2 ... beam 2a ... beam end component 2b ... beam intermediate component 2A, 2B ... ceiling beam 3 ... column vertical Split column / beam joint 4 Grout 5 Column base unit 9 Column joint

この発明のノンブレース鉄骨造建物は、角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物であって、
前記柱が階高の途中で互いに接合される下側柱と上側柱とでなり、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されて、前記下側柱と前記上側柱との柱継手部が剛接合とされ、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接される。
前記上側柱の前記接合用鉄骨は、前記下側柱の全体高さに渡って差し込まれ、前記グラウトは、前記下側柱の上端から下端までの全体に充填され、前記上側柱は、グラウトが非充填であり、前記上側柱本体の下端面は、全周溶接で接合された小口プレートによって閉鎖され、この小口プレートに前記接合用鉄骨の上端が溶接されている。
The non-braced steel frame building of the present invention is a non-braced steel frame building composed of square pipe columns and steel frame beams,
The pillar is composed of a lower pillar and an upper pillar which are joined to each other in the middle of the floor height, and the upper pillar has a joining steel frame having a non-closed cross-sectional shape inserted into the lower pillar, made of a square pipe. It is provided extending downward from the upper column main body, the lower column is filled with grout in a state in which the joining steel frame is embedded, and the column joint portion between the lower column and the upper column is rigidly joined. Then, the end surfaces of the beam end constituting materials that are part of the beam in the length direction in each direction are welded to at least two side surfaces of the lower end of the lower pillar.
The joining steel frame of the upper column is inserted over the entire height of the lower column, the grout is filled entirely from the upper end to the lower end of the lower column, and the upper column has a grout. It is unfilled, and the lower end surface of the upper column main body is closed by a small plate joined by full circumference welding, and the upper end of the joining steel frame is welded to this small plate.

この発明の柱上下分割型柱・梁接合体は、軽量鉄骨の角パイプ製の柱と梁の一部とでなる柱・梁接合体であって、
鉄骨造建物の階高の途中で互いに接合される下側柱と上側柱とを備え、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されることで、前記下側柱と前記上側柱とが剛接合され、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接されて前記下側柱と前記梁端部構成材とで柱脚ユニットを構成する。
前記上側柱の前記接合用鉄骨は、前記下側柱の全体高さに渡って差し込まれ、前記グラウトは、前記下側柱の上端から下端までの全体に充填され、前記上側柱は、グラウトが非充填であり、前記上側柱本体の下端面は、全周溶接で接合された小口プレートによって閉鎖され、この小口プレートに前記接合用鉄骨の上端が溶接されている。
The column vertical beam type column / beam joint of the present invention is a column / beam joint composed of a column and a beam made of a lightweight steel square pipe,
A lower pillar and an upper pillar joined to each other in the middle of the floor height of the steel frame building, wherein the upper pillar is formed of a square pipe made of a joining steel frame having a non-closed cross-sectional shape inserted into the lower pillar. The lower column and the upper column are rigidly joined by being provided to extend downward from the upper column main body and filling the lower column with grout in a state in which the joining steel frame is embedded, At least two side surfaces of the lower end of the lower column are welded with end surfaces of beam end components that become a part of the beam length direction in each direction, and the lower column and the beam end configuration are welded. The column base unit is composed of the materials.
The joining steel frame of the upper column is inserted over the entire height of the lower column, the grout is filled entirely from the upper end to the lower end of the lower column, and the upper column has a grout. It is unfilled, and the lower end surface of the upper column main body is closed by a small plate joined by full circumference welding, and the upper end of the joining steel frame is welded to this small plate.

この発明のノンブレース鉄骨造建物の構築方法は、角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物を構築する方法であって、
前記柱の階高の途中で互いに接合される下側柱と上側柱のうちの下側柱と、この下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接された柱脚ユニットを工場生産する過程と、
前記下側柱内に差し込まれる非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びた上側柱を工場生産する過程と、
建築現場に搬入された前記柱脚ユニットにおける前記下側柱に、前記上側柱の前記接合用鉄骨を差し込む過程と、
前記接合用鉄骨が埋め込まれる状態に、前記下側柱にグラウトを充填し、硬化させる過程、
とを含む。
前記上側柱の前記接合用鉄骨は、前記下側柱の全体高さに渡って差し込み、前記グラウトは、前記下側柱の上端から下端までの全体に充填し、前記上側柱は、グラウトを非充填とし、前記柱脚ユニットにおける前記上側柱本体の下端面は、全周溶接で接合された小口プレートによって閉鎖され、この小口プレートに前記接合用鉄骨の上端が溶接されている。
The method of constructing a non-braced steel frame building of the present invention is a method of constructing a non-braced steel frame building composed of square pipe columns and steel frame beams,
The lower pillar of the lower pillar and the upper pillar which are joined to each other in the middle of the floor height of the pillar, and the length direction of the beam in each direction on at least two side surfaces of the lower end of the lower pillar. A process of factory-manufacturing a column base unit in which the end faces of the beam end components constituting a part of the welding are welded,
A process of factory-producing an upper column extending downward from an upper column main body made of a square pipe, with a joining steel frame having a non-closed cross-sectional shape inserted into the lower column,
A step of inserting the joining steel frame of the upper column into the lower column of the column base unit carried into the building site,
Filling the lower pillars with grout in a state in which the joining steel frame is embedded, and curing.
And
The joining steel frame of the upper column is inserted over the entire height of the lower column, the grout fills the entire lower column from the upper end to the lower end, and the upper column is non-grouted. The lower end face of the upper column main body in the column base unit is closed by a small plate joined by full circumference welding, and the upper end of the joining steel frame is welded to this small plate.

上側柱1bは、前記角パイプからなる上側柱本体1baと、この上側柱本体1baの下端に接合された接合用鉄骨1bbとで構成される。接合用鉄骨1bbは、下側柱1aに差し込まれる部材であり、断面十字形とされた十字プレートまたは形鋼が用いられている。接合用鉄骨1bbの長さは、下側柱1aの全体高さに渡って差し込まれる長さとされる。上側柱本体1baの下端面は、全周溶接で接合された鋼板製の小口プレート6によって閉鎖され、この小口プレート6に接合用鉄骨1bbの上端が溶接等で接合されている。上側柱本体1baと小口プレート6と接合用鉄骨1bbとでなる上側柱1bは、工場で生産される。 The upper pillar 1b is composed of an upper pillar main body 1ba made of the square pipe and a joining steel frame 1bb joined to a lower end of the upper pillar main body 1ba. The joining steel frame 1bb is a member to be inserted into the lower column 1a, and a cross plate or a shaped steel having a cross-shaped cross section is used. The length of the joining steel frame 1bb is a length that is 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 at a factory.

Claims (5)

角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物であって、
前記柱が階高の途中で互いに接合される下側柱と上側柱とでなり、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されて、前記下側柱と前記上側柱との柱継手部が剛接合とされ、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接されたノンブレース鉄骨造建物。
It is a non-braced steel framed building composed of square pipe columns and steel beams,
The pillar is composed of a lower pillar and an upper pillar which are joined to each other in the middle of the floor height, and the upper pillar has a joining steel frame having a non-closed cross-sectional shape inserted into the lower pillar, made of a square pipe. It is provided extending downward from the upper column main body, the lower column is filled with grout in a state in which the joining steel frame is embedded, and the column joint portion between the lower column and the upper column is rigidly joined. A non-braced steel frame building in which a beam end portion constituting a part of a longitudinal direction of the beam in each direction is welded to at least two side surfaces of a lower end of the lower pillar.
請求項1に記載のノンブレース鉄骨造建物において、この建物を構成する柱および梁のうち、最下階の床梁を除く梁および柱が軽量鉄骨であるノンブレース鉄骨造建物。   The non-braced steel framed building according to claim 1, wherein, of the columns and beams constituting the building, beams and columns other than a floor beam on the lowest floor are lightweight steel frames. 請求項1または請求項2に記載のノンブレース鉄骨造建物において、前記接合用鉄骨が断面形状十字形であるノンブレース鉄骨造建物。   The non-braced steel frame building according to claim 1 or 2, wherein the connecting steel frame has a cross-shaped cross section. 軽量鉄骨の角パイプ製の柱と梁の一部とでなる柱上下分割型柱・梁接合体であって、
鉄骨造建物の階高の途中で互いに接合される下側柱と上側柱とを備え、前記上側柱は、前記下側柱内に差し込まれた非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びて設けられ、前記下側柱に、前記接合用鉄骨が埋め込まれた状態にグラウトが充填されることで、前記下側柱と前記上側柱とが剛接合され、前記下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接されて前記下側柱と前記梁端部構成材とで柱脚ユニットを構成する柱上下分割型柱・梁接合体。
It is a column-beam split type column / beam joint composed of a light steel square pipe column and a part of a beam,
A lower pillar and an upper pillar joined to each other in the middle of the floor height of the steel frame building, wherein the upper pillar is formed of a square pipe made of a joining steel frame having a non-closed cross-sectional shape inserted into the lower pillar. The lower column and the upper column are rigidly joined by being provided to extend downward from the upper column main body and filling the lower column with grout in a state in which the joining steel frame is embedded, At least two side surfaces of the lower end of the lower column are welded with end surfaces of beam end components that become a part of the beam length direction in each direction, and the lower column and the beam end configuration are welded. A column-beam split-type joint that forms a column base unit with materials.
角パイプ製の柱と、鉄骨製の梁とで構成されるノンブレース鉄骨造建物を構築する方法であって、
前記柱の階高の途中で互いに接合される下側柱と上側柱のうちの下側柱と、この下側柱の下端の少なくとも2方向の側面に、それぞれ各方向の前記梁の長さ方向の一部となる梁端部構成材の端面が溶接された柱脚ユニットを工場生産する過程と、
前記下側柱内に差し込まれる非閉鎖断面形状の接合用鉄骨が、角パイプ製の上側柱本体から下方に延びた上側柱を工場生産する過程と、
構築現場に搬入された前記柱脚ユニットにおける前記下側柱に、前記上側柱の前記接合用鉄骨を差し込む過程と、
前記接合用鉄骨が埋め込まれる状態に、前記下側柱にグラウトを充填し、硬化させる過程、
とを含むノンブレース鉄骨造建物の構築方法。
A method of constructing a non-braced steel-framed building composed of square pipe columns and steel beams,
The lower pillar of the lower pillar and the upper pillar which are joined to each other in the middle of the floor height of the pillar, and the length direction of the beam in each direction on at least two side surfaces of the lower end of the lower pillar. A process of factory-manufacturing a column base unit in which the end faces of the beam end components constituting a part of the welding are welded,
A process of factory-producing an upper column extending downward from an upper column main body made of a square pipe, with a joining steel frame having a non-closed cross-sectional shape inserted into the lower column,
A step of inserting the joining steel frame of the upper column into the lower column of the column base unit carried into the construction site,
Filling the lower pillars with grout in a state in which the joining steel frame is embedded, and curing.
And construction method of non-brace steel frame building including.
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