JPH07259256A - Method of anchoring column main reinforcement upper end part on the uppermost floor - Google Patents
Method of anchoring column main reinforcement upper end part on the uppermost floorInfo
- Publication number
- JPH07259256A JPH07259256A JP7790394A JP7790394A JPH07259256A JP H07259256 A JPH07259256 A JP H07259256A JP 7790394 A JP7790394 A JP 7790394A JP 7790394 A JP7790394 A JP 7790394A JP H07259256 A JPH07259256 A JP H07259256A
- Authority
- JP
- Japan
- Prior art keywords
- column
- steel beam
- anchor metal
- column main
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【0001】,0001,
【産業上の利用分野】本発明は、建築物の最上階におけ
るRC柱・鉄骨梁の接合部において、その柱頭部におけ
る柱主筋上端部の定着方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing an upper end of a column main bar at a column head of a RC column-steel beam joint on the uppermost floor of a building.
【0002】[0002]
【従来の技術】従来、建築物の最上階におけるRC柱の
上部と鉄骨梁の接合部において、その柱頭部における柱
主筋上端部の定着は、図3(A)に示すようにRC柱
(鉄筋コンクリート造)aの柱主筋bの上端部をU形状
のフツクb1に形成したり、又は図3(B)に示すよう
にその柱主筋bの上端部の間に逆U形状のアンカー筋d
を重ね接手構造により連結し又はカプラー(図示省略)
により連結して定着する方法が一般的になつている。2. Description of the Related Art Conventionally, at the joint between the upper part of the RC column and the steel beam on the top floor of a building, the upper end of the column main bar is fixed at the column head as shown in FIG. 3 (A). Structure) a, the upper end of the column main bar b is formed into a U-shaped hook b1, or, as shown in FIG. 3B, an inverted U-shaped anchor bar d is formed between the upper ends of the column main bar b.
Or a coupler (not shown)
Generally, a method of connecting and fixing by the method is used.
【0003】[0003]
【発明が解決しようとする課題】従来、建築物の最上階
におけるRC柱・鉄骨梁の接合部において、その柱主筋
上端部は、前記のようにフツクを形成して定着したり、
その上端部間に逆U形状のアンカー筋を連結して定着し
ているため、いずれも柱主筋上端部の定着力を十分に確
保できず、大きな水平荷重時(地震時等)におけるその
RC柱頭部の変形能力に難があるなどの課題がある。Conventionally, at the joint between the RC column and the steel beam on the top floor of the building, the upper end of the column main bar forms a hook as described above, and is fixed,
Since an inverted U-shaped anchor bar is connected and fixed between the upper ends, neither of them can secure sufficient anchoring force at the upper end of the column main bar, and its RC stigma at the time of a large horizontal load (such as an earthquake) There are problems such as difficulty in deforming parts.
【0004】本発明は、前記のような課題に対処するた
めに開発されたものであつて、その目的とする処は、R
C柱・鉄骨梁の接合部においてその上側に少なくとも2
枚のアンカー金物を相互間隔を置きかつ交差状に配置し
て柱主筋上端部に定着することにより、最上階のRC柱
・鉄骨梁の接合部におけるRC柱頭部の変形能力、信頼
性を向上した最上階における柱主筋上端部の定着方法を
提供するにある。The present invention was developed in order to address the above-mentioned problems, and the object of the invention is R
At least 2 above the C-column / steel beam joint
By arranging a number of anchor metal fittings at intervals and crossing each other and fixing them at the upper end of the column main bar, the deformation capacity and reliability of the RC column head at the joint between the RC column and the steel beam on the top floor were improved. It is to provide a method of fixing the upper end of the pillar main bar on the top floor.
【0005】[0005]
【課題を解決するための手段】本発明は、建築物の最上
階におけるRC柱の上部と鉄骨梁の接合部において、R
C柱の上部に配置した鉄骨梁の上側に少なくとも2枚の
アンカー金物を相互間隔を置きかつ鉄骨梁に対し交差状
に配置して、前記の両アンカー金物を鉄骨梁の両側の柱
主筋の上端部にそれぞれ定着して連結したことにより、
そのアンカー金物により最上階のRC柱・鉄骨梁の接合
部におけるRC柱頭部の強度及び変形能力、信頼性を効
果的に高めている。According to the present invention, at the joint between the upper part of the RC column and the steel beam on the top floor of the building, R
At least two anchor metal fittings are arranged on the upper side of the steel beam placed on the upper part of the C column with a space between them and are arranged in a cross shape with respect to the steel beam. By fixing and connecting to each section,
The anchor hardware effectively enhances the strength, deformation capacity, and reliability of the RC column head at the joint between the RC column and the steel beam on the top floor.
【0006】[0006]
【作用】最上階におけるRC柱・鉄骨梁の接合部におい
て、そのRC柱の上部に配置した鉄骨梁の上側に少なく
とも2枚のアンカー金物を相互間隔を置きかつ交差状に
配置して、各アンカー金物を鉄骨梁の両側に配置されて
いる各柱主筋の上端部に定着、連結して容易に施工さ
れ、RC柱・鉄骨梁の接合部において、各アンカー金物
は、相互間隔を置き配設されて優れたアンカー性能、柱
主筋上端部の定着性能を有し、変形荷重時に鉄骨梁から
伝えられる応力は各アンカー金物及び柱主筋に伝えられ
てその両引張力により効果的に分担され、RC柱頭部の
強度が著しく高められ鉄骨梁と一体的になつて変形する
構造となり、その接合部におけるRC柱頭部の変形能力
が飛躍的に増大されて大きな水平荷重時にも安定した変
形性能が得られる。[Operation] At the joint between the RC column and the steel beam on the uppermost floor, at least two anchor metal pieces are arranged in a cross shape and at an interval above the steel beam arranged above the RC column, and each anchor is arranged. Fixing and connecting the hardware to the upper end of each column main bar arranged on both sides of the steel beam for easy construction. At the joint between the RC column and the steel beam, the anchor hardware is arranged with a space between them. It has excellent anchor performance and anchoring performance of the upper end of the column main bar, and the stress transmitted from the steel beam at the time of deformation load is transmitted to each anchor metal and the column main bar and is effectively shared by both tensile forces, and RC stigma The strength of the section is remarkably increased, and the structure becomes deformed integrally with the steel beam. The deformability of the RC column head at the joint is drastically increased, and stable deformability is obtained even under a large horizontal load.
【0007】[0007]
【実施例】図1に本発明の第1実施例、図2に第2実施
例を示す。図1において1はRC柱(鉄筋コンクリート
造柱)、2は柱主筋、3は建築物の最上階におけるRC
柱1の上部に配設された鉄骨梁、4は最上階におけるR
C柱1の上部と鉄骨梁3の接合部、5は鉄骨梁3の上側
に配置されてその両側の柱主筋2の上端部2aに定着さ
れたアンカー金物、6はアンカー金物5を柱主筋2の上
端部2aに定着するナツトであり、図1に示す第1実施
例は、建築物の最上階におけるRC柱1の上部と鉄骨梁
3との接合部4において、RC柱1の上部の鉄骨梁3の
上側に少なくとも2枚のアンカー金物5を相互間隔を置
きかつ交差状に配置して、その両アンカー金物5を鉄骨
梁2の両側の柱主筋2の上端部2aにそれぞれ定着させ
て連結した最上階における柱主筋上端部の定着方法にな
つている。1 shows a first embodiment of the present invention, and FIG. 2 shows a second embodiment. In FIG. 1, 1 is an RC column (reinforced concrete column), 2 is a column main bar, and 3 is the RC on the top floor of the building.
Steel beams 4 arranged on top of the pillar 1 are R on the top floor
The joints 5 between the upper portion of the C column 1 and the steel beam 3 are arranged on the upper side of the steel beam 3 and anchored to the upper ends 2a of the column main bars 2 on both sides thereof, 6 is the anchor metal 5 and the column main bar 2 The first embodiment shown in FIG. 1 is a nut that is fixed to the upper end portion 2a of the RC pillar 1. At the joint portion 4 between the upper portion of the RC column 1 and the steel beam 3 on the uppermost floor of the building, At least two anchor metal pieces 5 are arranged on the upper side of the beam 3 with a space therebetween and in a cross shape, and both anchor metal pieces 5 are fixed and connected to the upper end portions 2a of the column main bars 2 on both sides of the steel beam 2, respectively. It is a method of fixing the upper end of the pillar main bar on the top floor.
【0008】さらに詳述すると、前記のアンカー金物5
は、図1に示すような平鋼や溝形鋼(図示省略)等で形
成され、鉄骨梁3の上側に跨がらせた交差状の配置にし
て、鉄骨梁2の両側に配置された複数本(図示例は4
本)の柱主筋2の上端部2aに定着する複数の挿着孔
(図示省略)を配設した構造になつている。More specifically, the above anchor metal 5
Are formed of flat steel or channel steel (not shown) as shown in FIG. 1 and are arranged in a cross shape over the upper side of the steel beam 3, and are arranged on both sides of the steel beam 2. Book (4 in the example shown)
This is a structure in which a plurality of insertion holes (not shown) that are fixed to the upper end portion 2a of the column main bar 2 of (book) are arranged.
【0009】図示のように建築物の最上階におけるRC
柱1と鉄骨梁3との接合部4において、このRC柱1の
上部の鉄骨梁3の上側に2枚のアンカー金物5を相互に
適宜の間隔を置きかつ交差状に配置して、各アンカー金
物5の挿着孔に鉄骨梁3の両側に配置されている各柱主
筋2の上端部2a(ネジ付き)を挿着しナツト6で締結
して定着し連結した後、このRC柱1にコンクリートを
打設すると、RC柱・鉄骨梁の接合部4において、両ア
ンカー金物5は、鉄骨梁3の上側で相互に適宜の間隔を
置きかつ交差状に配置されて鉄骨梁3の両側の複数本の
各柱主筋2に定着され、適度の小幅に形成して相互間隔
を置き配設したことによりコンクリートとの付着力つま
りアンカー性能が効果的に高められるとともに、例え
ば、地震時の水平力によりRC柱・鉄骨梁の接合部4に
大きな応力集中が生じた場合、図1(B)に示すように
鉄骨梁3から伝えられる上向き斜めの応力Pの水平成分
及び垂直成分はアンカー金物5と柱主筋2に伝えられそ
の両引張力H,Tによつて効果的に分担され、RC柱1
の頭部の強度が著しく高められ鉄骨梁3と一体的になつ
て変形する構造となり、そのRC柱・鉄骨梁の接合部4
におけるRC柱1の上部の変形能力が飛躍的に増大され
て、前記のような大きな水平荷重時にも安定した変形性
能が得られる。RC on the top floor of the building as shown
At the joint 4 between the column 1 and the steel beam 3, two anchor metal pieces 5 are arranged above the steel beam 3 at the upper part of the RC column 1 at appropriate intervals and in a cross shape, and each anchor After inserting the upper end portions 2a (with screws) of the column main bars 2 arranged on both sides of the steel beam 3 into the insertion holes of the hardware 5 and fastening and fixing with the nut 6, the RC columns 1 are connected. When concrete is cast, at the RC column / steel beam joint portion 4, both anchor metal pieces 5 are arranged at appropriate intervals with respect to each other on the upper side of the steel beam 3 and are arranged in a cross shape so that a plurality of anchor metal pieces 5 on both sides of the steel beam 3 are formed. It is fixed to each column main bar 2 of the book, and by forming it with a proper small width and arranging it at intervals, the adhesive force with concrete, that is, the anchor performance is effectively enhanced, and, for example, by the horizontal force during an earthquake. Large stress concentration occurs at the joint 4 of RC column and steel frame beam. In this case, as shown in FIG. 1B, the horizontal component and the vertical component of the upward diagonal stress P transmitted from the steel beam 3 are transmitted to the anchor metal 5 and the column main bar 2, and the tensile forces H and T are applied. Effectively shared, RC pillar 1
The strength of the head of the RC is significantly increased, and the structure becomes deformed by being integrally connected with the steel beam 3, and the RC column-steel beam joint 4
The deformation capacity of the upper part of the RC column 1 is drastically increased, and stable deformation performance can be obtained even under the large horizontal load as described above.
【0010】図2に示す第2実施例において、図中15
はアンカー金物、16は溝形鋼製の第2のアンカー金物
であつて、第2実施例は、建築物の最上階におけるRC
柱1の上部と鉄骨梁3との接合部4において、RC柱1
上の鉄骨梁3の上側に少なくとも2枚のアンカー金物1
5,16を相互間隔を置きかつ交差状に配置して、その
両アンカー金物15,16を鉄骨梁2の両側の柱主筋2
の上端部2aにそれぞれ定着させて配設した最上階にお
ける柱主筋上端部の定着方法になつている。In the second embodiment shown in FIG. 2, 15 in the figure
Is an anchor metal fitting, 16 is a second anchor metal fitting made of channel steel, and the second embodiment is RC on the top floor of the building.
At the joint 4 between the upper part of the pillar 1 and the steel beam 3, the RC pillar 1
At least two anchor hardware 1 on the upper side of the upper steel beam 3
5 and 16 are arranged at a distance from each other and are arranged in a cross shape, and the anchor metal fittings 15 and 16 are arranged on both sides of the steel beam 2 to the column main bar 2
The method of fixing the upper ends of the column main bars on the uppermost floor, which are fixed and arranged on the upper ends 2a of
【0011】この第2実施例は、第1実施例に比べ各2
枚のアンカー金物15に比較的に小さく形成してコンク
リートの打設性を良好にし、柱主筋2の定着本数(各3
本)を増加するとともに、その各アンカー金物15にそ
れぞれアンカー金物16を対にして組み合わせた構成に
特徴を有し、柱主筋2の上端部の定着力つまりRC柱1
の上部の強度、接合部4におけるRC柱1頭部の変形能
力をさらに増大せしめている。その他の構成は第1実施
例と同様になつており基本的に同様な作用、効果を有す
る。The second embodiment is two each compared to the first embodiment.
The anchor metal pieces 15 are formed to be relatively small so that concrete can be easily placed.
The present invention is characterized in that each anchor metal piece 15 and each anchor metal piece 16 are paired and combined with each other.
The strength of the upper part of the and the deformability of the RC column 1 head at the joint 4 are further increased. Other configurations are similar to those of the first embodiment, and basically have the same operation and effect.
【0012】図示の両実施例は、RC柱の上部に鉄骨梁
を一方向のみに配設した構造になつているが、必要に応
じ直角方向に鉄骨梁やRC梁を併設した接合部にも適用
される。また、第1実施例のアンカー金物は、必要に応
じその枚数を増加したり、第2実施例のように6本の柱
主筋に定着するなどの構造に、第2実施例のアンカー金
物15は、必要に応じ第1実施例のように4本の柱主筋
に定着したり、その枚数を増加するなどの構造にするこ
とができる。さらに、アンカー金物と柱主筋との定着手
段は、ボルト連結の他に溶接等によることもできる。Although both of the illustrated embodiments have a structure in which a steel beam is disposed above the RC column in only one direction, it is also possible to connect the steel beam and the RC beam in a perpendicular direction if necessary. Applied. In addition, the anchor metal fitting 15 of the second embodiment has a structure in which the number of anchor metal fittings of the first embodiment is increased as necessary, and the anchor metal fitting 15 of the second embodiment has a structure in which it is fixed to six pillar main bars as in the second embodiment. If necessary, it is possible to adopt a structure in which four pillar main bars are fixed or the number thereof is increased as in the first embodiment. Further, the fixing means between the anchor metal member and the column main bar may be welded or the like in addition to the bolt connection.
【0013】[0013]
【発明の効果】本発明は、前述のように建築物の最上階
におけるRC柱・鉄骨梁の接合部において、そのRC柱
上の鉄骨梁上に少なくとも2枚のアンカー金物を相互間
隔を置きかつ交差状に配置して、各アンカー金物に鉄骨
梁の両側に配置されている各柱主筋の上端部を定着、連
結して容易に施工され、各アンカー金物は、鉄骨梁の上
側で相互に適宜の間隔を置き交差状に配置され鉄骨梁の
両側の複数本の各柱主筋に定着されて、そのアンカー性
能が効果的に高められるとともに、その接合部に加わる
変形荷重は鉄骨梁から各アンカー金物及び柱主筋に伝え
られてその両引張力により効果的に分担され、RC柱頭
部の強度が著しく高められ鉄骨梁と一体になつて変形す
る構造となり、RC柱・鉄骨梁の接合部におけるRC柱
頭部の変形耐力が飛躍的に増大され大変形の荷重時にも
安定した変形性能が得られるなど、最上階のRC柱・鉄
骨梁の接合部におけるRC柱頭部の変形耐力、信頼性を
著しく向上している。As described above, according to the present invention, at the joint between the RC column and the steel beam on the uppermost floor of the building, at least two anchor metal parts are arranged on the steel beam on the RC column with a space between them. It is arranged in a cross shape, and the upper ends of the main columns of the columns, which are arranged on both sides of the steel beam, are fixed and connected to each anchor metal piece for easy construction. It is arranged in a cross shape with the space between and fixed to the main bars of each of the columns on both sides of the steel beam, and its anchor performance is effectively enhanced, and the deformation load applied to the joint is from the steel beam to each anchor metal. And, it is transmitted to the column main bar and is effectively shared by both tensile forces, the strength of the RC column head is remarkably increased and it becomes a structure that deforms integrally with the steel beam, and the RC column head at the joint between the RC column and the steel beam The deformation resistance of the part Such as Yue to increased stable deformation performance even when a load of large deformation is obtained, and significantly improved deformation strength of RC stigma portion, the reliability of the junction of the top floor of the RC-column steel beam.
【図1】本発明の第1実施例を示す正面図(A)とその
X−X断面図(B)及び平面図(C)FIG. 1 is a front view (A) showing the first embodiment of the present invention, an XX sectional view (B) and a plan view (C) thereof.
【図2】第2実施例を示す正面図(A)とそのY−Y断
面図(B)及び平面図(C)FIG. 2 is a front view (A) showing a second embodiment, a YY sectional view (B) and a plan view (C) thereof.
【図3】従来例を示す側面図(A)と他の従来例を示す
側面図(B)である。FIG. 3 is a side view (A) showing a conventional example and a side view (B) showing another conventional example.
1 RC柱 2 柱主筋 2a 上端部(柱主筋) 3 鉄骨梁 4 接合部(RC柱・鉄骨梁) 5,15,16 アンカー金物 1 RC Column 2 Column Main Bar 2a Upper End (Column Main Bar) 3 Steel Beam 4 Joint (RC Column / Steel Beam) 5,15,16 Anchor Hardware
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 龍生 東京都新宿区西新宿一丁目25番1号 大成 建設株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuo Sato 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation
Claims (1)
鉄骨梁の接合部において、RC柱の上部に配置した鉄骨
梁の上側に少なくとも2枚のアンカー金物を相互間隔を
置きかつ鉄骨梁に対し交差状に配置して、前記の両アン
カー金物を鉄骨梁の両側の柱主筋の上端部にそれぞれ定
着して連結したことを特徴とする最上階における柱主筋
上端部の定着方法。1. At the joint between the upper part of the RC column and the steel beam on the uppermost floor of the building, at least two anchor metal parts are spaced apart from each other on the upper side of the steel beam arranged on the upper part of the RC column, and are connected to the steel beam. A method for fixing the upper end of the column main bar on the uppermost floor, wherein the two anchor metal pieces are arranged in a cross shape and fixedly connected to the upper ends of the column main bars on both sides of the steel beam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7790394A JPH07259256A (en) | 1994-03-25 | 1994-03-25 | Method of anchoring column main reinforcement upper end part on the uppermost floor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7790394A JPH07259256A (en) | 1994-03-25 | 1994-03-25 | Method of anchoring column main reinforcement upper end part on the uppermost floor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07259256A true JPH07259256A (en) | 1995-10-09 |
Family
ID=13647040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7790394A Pending JPH07259256A (en) | 1994-03-25 | 1994-03-25 | Method of anchoring column main reinforcement upper end part on the uppermost floor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07259256A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008297750A (en) * | 2007-05-30 | 2008-12-11 | Toda Constr Co Ltd | Column-beam joint portion structure on highest story of reinforced concrete structure |
-
1994
- 1994-03-25 JP JP7790394A patent/JPH07259256A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008297750A (en) * | 2007-05-30 | 2008-12-11 | Toda Constr Co Ltd | Column-beam joint portion structure on highest story of reinforced concrete structure |
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