JPH0544299A - Reinforcing structure of structural steel reinforced concrete structure column member - Google Patents
Reinforcing structure of structural steel reinforced concrete structure column memberInfo
- Publication number
- JPH0544299A JPH0544299A JP19927391A JP19927391A JPH0544299A JP H0544299 A JPH0544299 A JP H0544299A JP 19927391 A JP19927391 A JP 19927391A JP 19927391 A JP19927391 A JP 19927391A JP H0544299 A JPH0544299 A JP H0544299A
- Authority
- JP
- Japan
- Prior art keywords
- column
- reinforced concrete
- steel
- structural steel
- column member
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は鉄骨鉄筋コンクリート造
柱部材の補強構造に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure for steel reinforced concrete column members.
【０００２】[0002]
【従来の技術】従来の鉄骨鉄筋コンクリート造柱部材は
部材内部に配設された型鋼材と、同形鋼材を囲繞する鉄
筋コンクリート造部分とによって構成された断面を有
し、且つ材長方向に亘って同一の断面配置となされてい
る。2. Description of the Related Art A conventional steel-framed reinforced concrete pillar member has a cross section composed of a shaped steel material arranged inside the member and a reinforced concrete construction part surrounding the same shaped steel material, and is the same along the material length direction. The cross-section is arranged.
【０００３】[0003]
【発明が解決しようとする課題】前記鉄骨鉄筋コンクリ
ート造柱部材が地震力等の水平荷重を受けると、材端部
では鉄骨部と鉄筋コンクリート部とが同一の水平変位を
強制されるが、材中間部では両者の変形モードが同一と
なる保証が与えられていない。換言すれば鉄骨部と鉄筋
コンクリート部との界面において、同一の歪となるのに
必要な抵抗力（せん断抵抗力と軸方向抵抗力）が保証さ
れていない。When the steel-framed reinforced concrete column member receives a horizontal load such as seismic force, the steel frame portion and the reinforced concrete portion are forced to have the same horizontal displacement at the end portion of the material, but the middle portion of the material. There is no guarantee that both transformation modes will be the same. In other words, at the interface between the steel frame portion and the reinforced concrete portion, the resistance forces (shear resistance force and axial resistance force) required to have the same strain are not guaranteed.
【０００４】この結果、鉄骨部と鉄筋コンクリート部と
が一体となったときに発揮される、所謂、終局強度を構
造計画に採用することが困難となる。本発明は前記従来
技術の有する問題点に鑑みて提案されたもので、その目
的とする処は、鉄骨部と鉄筋コンクリート部の変形モー
ドが同一モードに近づけられる鉄骨鉄筋コンクリート造
柱部材の補強構造を提供する点にある。As a result, it is difficult to adopt the so-called ultimate strength, which is exerted when the steel frame portion and the reinforced concrete portion are integrated, in the structural plan. The present invention has been proposed in view of the above problems of the prior art, and an object thereof is to provide a reinforcing structure for a steel reinforced concrete pillar member in which the deformation modes of the steel frame portion and the reinforced concrete portion are brought close to the same mode. There is a point to do.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に係る鉄骨鉄筋コンクリート造柱部材の補強
構造は、材長方向に亘って所定位置毎に柱断面を囲繞す
る帯状補強鋼板を前記柱鉄骨に接合して構成されてい
る。In order to achieve the above-mentioned object, a reinforcing structure for a steel reinforced concrete columnar member according to the present invention is a strip-shaped reinforcing steel plate surrounding a column cross section at predetermined positions in the material length direction. It is configured to be joined to the pillar steel frame.
【０００６】[0006]
【作用】本発明は前記したように鉄骨鉄筋コンクリート
造柱部材の柱断面を囲繞し、同柱部材に内蔵された柱鉄
骨に接合された帯状補強鋼板によって、柱部材が曲げモ
ーメントを受けたとき、鉄骨部と鉄筋コンクリート部断
面の曲げ回転角が等しくなり、またせん断力を受けた場
合には両者のせん断歪が等しくなる。The present invention surrounds the column cross section of the steel reinforced concrete column member as described above, and when the column member receives a bending moment by the strip-shaped reinforcing steel plate joined to the column steel frame built in the column member, The bending rotation angles of the steel frame and reinforced concrete sections become equal, and when shearing force is applied, the shear strains of both become equal.
【０００７】更にまた前記鋼板はコンクリートの面外変
形に対して拘束効果を発揮し、コンクリートの強度と靱
性を向上させる。Furthermore, the steel sheet exerts a restraining effect on the out-of-plane deformation of concrete and improves the strength and toughness of concrete.
【０００８】[0008]
【実施例】以下本発明を図示の実施例について説明す
る。図１及び図２は短かい柱に本発明を適用した場合を
示す。高層住宅の一般階の柱はせん断スパン比が１．５
以下の短柱となり、また下層階の側柱や隅柱には高軸力
と高応力（曲げモーメントとせん断力）とが作用する。The present invention will be described below with reference to the illustrated embodiments. 1 and 2 show a case where the present invention is applied to a short pillar. The shear span ratio of the columns on the general floor of a high-rise house is 1.5.
It becomes the following short columns, and high axial force and high stress (bending moment and shear force) act on the side columns and corner columns on the lower floors.
【０００９】この種の柱に本発明を適用する場合、材中
央部と材端部に帯状補強鋼板による補強を施す。鉄骨鉄
筋コンクリート造柱部材は、Ｈ型鋼を十字状に組合わせ
て構成され、柱材断面の中心に配設された柱鉄骨１と、
同柱鉄骨１が埋設された鉄筋コンクリート部２とより構
成されている。図中２ａは柱主筋、２ｂは帯筋、２ｃは
コンクリートである。When the present invention is applied to this type of column, the central portion and the end portion of the material are reinforced by the strip-shaped reinforcing steel plate. The steel-framed reinforced concrete pillar member is configured by combining H-shaped steels in a cross shape, and a pillar steel frame 1 arranged at the center of the cross section of the pillar material,
It is composed of a reinforced concrete portion 2 in which the same pillar steel frame 1 is embedded. In the figure, 2a is a column main reinforcement, 2b is a stirrup, and 2c is concrete.
【００１０】３は材中央部及び材端部に配設された帯状
補強鋼板で、前記柱鉄骨１のフランジ部に接合部材４を
介して溶接ｗされている。図示の実施例は前記したよう
に構成されているので、材中央部に配設された帯状補強
鋼板３によって柱部材がせん断力を受けた場合、前記柱
鉄骨１と鉄筋コンクリート部とのせん断変形量を等しく
するとともに、柱部材に対角線状に生起する斜めせん断
ひび割れを拘束し、せん断強度を向上させるものであ
る。Reference numeral 3 is a strip-shaped reinforcing steel plate arranged at the central portion and the end portion of the material, which is welded to the flange portion of the column steel frame 1 through the joining member 4. Since the illustrated embodiment is configured as described above, when the column member receives a shearing force by the strip-shaped reinforcing steel plate 3 arranged in the central portion of the material, the amount of shear deformation between the column steel frame 1 and the reinforced concrete portion. And diagonal shear cracks that occur diagonally in the column member are constrained to improve the shear strength.
【００１１】また前記柱部材の端部に配設された帯状補
強鋼板３によって、柱部材における柱鉄骨１の断面と鉄
筋コンクリート部断面の回転角を等しくするとともに、
曲げ変形及びせん断変形に伴って生じる材端部コンクリ
ートの圧壊を防止するものである。図３及び図４は長い
柱に本発明を適用した場合を示す。高層住宅の１階柱は
せん断スパン比が２．０以上になるとともに、柱脚部で
曲げ降伏ヒンジが生じるように設計される。この種の柱
も高軸力を受けるため、必要な曲げ靱性を確保するため
には、主として柱脚から断面せいＤ程度の範囲の力学的
性能、強度と靱性とを向上させる必要があり、図示の実
施例では材端部と柱脚から１Ｄの位置に前記帯状補強鋼
板３を配設する。Further, the strip-shaped reinforcing steel plate 3 arranged at the end of the column member equalizes the rotation angles of the cross section of the column steel frame 1 and the cross section of the reinforced concrete portion in the column member,
It is intended to prevent the collapse of the material end concrete caused by bending deformation and shear deformation. 3 and 4 show a case where the present invention is applied to a long column. The first-floor column of a high-rise house has a shear span ratio of 2.0 or more and is designed to have a bending yield hinge at the column base. Since this type of column also receives a high axial force, in order to secure the necessary bending toughness, it is necessary to improve the mechanical performance, strength and toughness mainly in the range of the cross section D from the column base. In this embodiment, the strip-shaped reinforcing steel plate 3 is arranged at a position 1D from the material end and the column base.
【００１２】図中前記実施例と均等部分には同一符号が
附されている。而して材端部に配設された帯状補強鋼板
３は、柱部材断面における柱鉄骨１と鉄筋コンクリート
部の曲げ回転角を等しくさせるとともに、曲げ変形に伴
って生じる材端部コンクリートの圧壊を防止するもので
ある。また柱脚から１Ｄの位置の帯状補強鋼板３の補強
は、柱部材断面における柱鉄骨１の断面と鉄筋コンクリ
ート部の曲げ回転角を等しくするとともに、両者のせん
断歪を等しくして部材のせん断強度を向上させるもので
ある。In the figure, the same parts as those of the above embodiment are designated by the same reference numerals. Thus, the strip-shaped reinforcing steel plate 3 arranged at the end of the material makes the bending rotation angles of the pillar steel frame 1 and the reinforced concrete portion in the cross section of the pillar member equal, and prevents the collapse of the material end concrete caused by the bending deformation. To do. Further, the reinforcement of the strip-shaped reinforcing steel plate 3 at the position 1D from the column base makes the bending rotation angles of the column steel frame 1 and the reinforced concrete part in the column member cross section equal, and makes the shear strains of both equal to increase the shear strength of the member. To improve.
【００１３】[0013]
【発明の効果】このように本発明によれば、鉄骨鉄筋コ
ンクリート造柱部材の材長方向に亘って所定位置毎に、
柱断面を囲繞する帯状補強鋼板を柱鉄骨に接合して、柱
部材が水平荷重を受けて水平変形する際に、柱部材外周
の前記帯状補強鋼板の鉄筋コンクリート部に対する面外
拘束作用と、てこ作用とによって、鉄骨柱部と鉄筋コン
クリート部との変形モードを同一モードに近づけ、鉄骨
鉄筋コンクリート造柱部材の終局強度を確保し、また前
記帯状補強鋼板の鉄筋コンクリート部に対する拘束効果
によって、コンクリートの強度と靱性とを向上し、鉄骨
鉄筋コンクリート柱部材の力学的性能を向上するもので
ある。As described above, according to the present invention, at each predetermined position in the material length direction of the steel frame reinforced concrete pillar member,
When a strip-shaped reinforcing steel plate that surrounds the cross section of a column is joined to a column steel frame, and when the column member is horizontally deformed under a horizontal load, an out-of-plane restraining action on the reinforced concrete portion of the strip-like reinforcing steel plate on the outer periphery of the column member and a leverage action By, to bring the deformation mode of the steel column part and the reinforced concrete part close to the same mode, to secure the ultimate strength of the steel reinforced concrete column member, and by the restraining effect of the strip-reinforced steel plate on the reinforced concrete part, the strength and toughness of concrete and To improve the mechanical performance of the steel reinforced concrete column member.
【図１】本発明に係る鉄骨鉄筋コンクリート造柱部材の
補強構造の一実施例の縦断面図である。FIG. 1 is a longitudinal sectional view of an embodiment of a reinforcing structure for a steel-framed reinforced concrete column member according to the present invention.
【図２】図１の矢視イ−イ図である。FIG. 2 is a view taken along the line EE in FIG.
【図３】本発明の他の実施例を示す縦断面図である。FIG. 3 is a vertical sectional view showing another embodiment of the present invention.
【図４】図３の矢視ロ−ロ図である。FIG. 4 is a perspective view taken along the arrow in FIG.
１ 柱鉄骨 ２ａ 柱主筋 ２ｂ 帯筋 ２ｃ コンクリート ３ 帯状補強鋼板 ４ 接合部材 1 column steel frame 2a column main bar 2b band bar 2c concrete 3 band-shaped reinforcing steel plate 4 joining member
Claims (1)
リート造柱部材の材長方向に亘って所定位置毎に、柱断
面を囲繞する帯状補強鋼板を前記柱鉄骨に接合してなる
ことを特徴とする鉄骨鉄筋コンクリート造柱部材の補強
構造。1. A strip-shaped reinforcing steel plate surrounding a cross section of a column is joined to the column steel frame at predetermined positions in the material length direction of a steel-framed reinforced concrete column member containing a steel column steel frame. Reinforced structure of steel reinforced concrete pillar members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19927391A JPH0544299A (en) | 1991-08-08 | 1991-08-08 | Reinforcing structure of structural steel reinforced concrete structure column member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19927391A JPH0544299A (en) | 1991-08-08 | 1991-08-08 | Reinforcing structure of structural steel reinforced concrete structure column member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0544299A true JPH0544299A (en) | 1993-02-23 |
Family
ID=16405046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19927391A Pending JPH0544299A (en) | 1991-08-08 | 1991-08-08 | Reinforcing structure of structural steel reinforced concrete structure column member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544299A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008255646A (en) * | 2007-04-04 | 2008-10-23 | Taisei Corp | Column reinforcing structure |
| CN102758501A (en) * | 2012-07-23 | 2012-10-31 | 华北水利水电学院 | High-strength spiral hoop confined high-strength wide flange cross-shaped steel reinforced octagonal concrete column |
| JP2014047509A (en) * | 2012-08-30 | 2014-03-17 | Shimizu Corp | Short column structure and short span beam structure |
| CN103850392A (en) * | 2012-12-04 | 2014-06-11 | 北京工业大学 | Concrete column with vertical perforated rib plates between outer square steel pipe and inner round steel pipe and manufacturing method of concrete column |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01230830A (en) * | 1988-03-10 | 1989-09-14 | Takenaka Komuten Co Ltd | Steel structure |
-
1991
- 1991-08-08 JP JP19927391A patent/JPH0544299A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01230830A (en) * | 1988-03-10 | 1989-09-14 | Takenaka Komuten Co Ltd | Steel structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008255646A (en) * | 2007-04-04 | 2008-10-23 | Taisei Corp | Column reinforcing structure |
| CN102758501A (en) * | 2012-07-23 | 2012-10-31 | 华北水利水电学院 | High-strength spiral hoop confined high-strength wide flange cross-shaped steel reinforced octagonal concrete column |
| JP2014047509A (en) * | 2012-08-30 | 2014-03-17 | Shimizu Corp | Short column structure and short span beam structure |
| CN103850392A (en) * | 2012-12-04 | 2014-06-11 | 北京工业大学 | Concrete column with vertical perforated rib plates between outer square steel pipe and inner round steel pipe and manufacturing method of concrete column |
| CN103850392B (en) * | 2012-12-04 | 2016-01-20 | 北京工业大学 | Vertical floor concrete column with holes and the practice is established between outer square steel pipe inner circle steel pipe |
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