JPH0827952A - Rectangular steel-pipe column - Google Patents
Rectangular steel-pipe columnInfo
- Publication number
- JPH0827952A JPH0827952A JP16176794A JP16176794A JPH0827952A JP H0827952 A JPH0827952 A JP H0827952A JP 16176794 A JP16176794 A JP 16176794A JP 16176794 A JP16176794 A JP 16176794A JP H0827952 A JPH0827952 A JP H0827952A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- column
- cover plate
- shear reinforcing
- pipe column
- 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
- Rod-Shaped Construction Members (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、構造物に使用される
鋼管柱の中で、角形鋼管柱に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rectangular steel tube column among steel tube columns used for structures.
【０００２】[0002]
【従来の技術】鋼管柱は、高層建築を始め、土木、建築
等、種々の構造物に用いられている。その中で、断面が
矩形の角形鋼管柱は、断面が円形の円形鋼管柱に比べ梁
の取付けが容易であり、近年、広く用いられるようにな
ってきている。2. Description of the Related Art Steel pipe columns are used in various structures such as high-rise buildings, civil engineering, and construction. Among them, a rectangular steel tubular column having a rectangular cross section has a beam attached more easily than a circular steel tubular column having a circular cross section, and has been widely used in recent years.
【０００３】梁に用いられるのは、通常Ｉ形鋼又はＨ形
鋼であり、いずれも上下２枚のフランジとそれらの間を
繋ぐウェブで構成されている。梁の幅、即ちフランジの
幅は、構造上の要請で決まるが、通常、鋼管柱の寸法の
０．７倍以下となるよう設計されている。The beam used is usually an I-section steel or an H-section steel, each of which is composed of two upper and lower flanges and a web connecting them. The width of the beam, that is, the width of the flange is determined depending on the structural requirements, but is usually designed to be 0.7 times or less the dimension of the steel pipe column.
【０００４】特に、壁面を構成する場合は、梁を壁面一
杯に寄せて取り付けることにより、角形鋼管柱の４つの
側面の内１つの側面と梁のフランジの端面を、同一平面
（面一）とすることができる。このように柱と梁を面一
とすることにより、壁材の取付け等の施工が容易とな
る。In particular, in the case of forming a wall surface, by mounting the beam so as to be close to the wall surface, one of the four side surfaces of the rectangular steel tube column and the end surface of the flange of the beam are made flush with each other. can do. By making the pillar and the beam flush with each other in this manner, it becomes easy to carry out construction such as attachment of a wall material.
【０００５】角形鋼管には、鋼板をプレス成形し２箇所
で折り曲げてコの字型に成形し、その後、蓋板を溶接に
より接合して角形断面とする２シームタイプの角形鋼管
柱がある。例えば、特開平１−１６９０３９号公報等に
記載された技術がこれに当たる。一般に、角形鋼管柱は
４面とも同一板厚、同一強度で形成されている。As the square steel pipe, there is a two-seam type square steel pipe column in which a steel plate is press-formed, bent at two places to form a U-shape, and then a lid plate is joined by welding to form a square cross section. For example, the technique described in Japanese Patent Laid-Open No. 1-169039 or the like corresponds to this. Generally, the rectangular steel tube column is formed with the same plate thickness and the same strength on all four surfaces.
【０００６】このように、プレス加工により成形された
コの字型の鋼材と蓋板とからなる角形鋼管柱でも、蓋板
を接合した方の角はアールがついておらず、角の部分ま
で平面で構成されているので、梁を柱の角に寄せて取り
付けることができる。As described above, even in a rectangular steel pipe column composed of a U-shaped steel material formed by press working and a lid plate, the corner of the joined lid plate is not rounded and the corner portion is flat. The beam can be attached to the corner of the column.
【０００７】[0007]
【発明が解決しようとする課題】土木建築の構造物に、
地震、強風等により水平力が加わると、この力は梁を介
して伝達され、梁の取り付けられている柱に剪断力とし
て作用する。角形鋼管柱においては、この剪断力は柱の
４つの側面のうち梁に平行な２つの側面に配分され、そ
れぞれの側面に剪断力として作用する。[Problems to be Solved by the Invention] For civil engineering structures,
When a horizontal force is applied by an earthquake, a strong wind, etc., this force is transmitted through the beam and acts as a shearing force on the column to which the beam is attached. In a rectangular steel pipe column, this shearing force is distributed to two side faces parallel to the beam among the four side faces of the column, and acts on each side face as a shearing force.
【０００８】この剪断力は、梁を柱の軸心に合わせて取
り付けてあれば、２つの側面について互いに等しくな
る。しかし、梁の取付け位置を偏心させると、２つの側
面に作用する剪断力は変化する。この場合、梁に近い方
の側面に作用する剪断力は、梁の取付け位置が偏心して
いない場合より増加する。This shearing force is equal to each other on the two side surfaces when the beam is attached to the column center axis. However, when the mounting position of the beam is eccentric, the shearing force acting on the two side surfaces changes. In this case, the shearing force acting on the side surface closer to the beam is larger than that when the mounting position of the beam is not eccentric.
【０００９】一般に、柱の強度は、梁が柱の軸心に合わ
せて取り付けられることを前提にして、設計されてい
る。その結果、柱の剪断力に対する強度（剪断強度）を
変えずに梁を柱の角に寄せて取り付けることは、この側
面に作用する剪断力がその許容強度を超えることになる
ので、困難である。In general, the strength of the column is designed on the assumption that the beam is mounted in alignment with the axis of the column. As a result, it is difficult to mount the beam close to the corner of the column without changing the strength (shear strength) of the column because the shearing force acting on this side surface exceeds the allowable strength. .
【００１０】もし、このように梁の取付け位置を偏心さ
せる場合は、柱の強度をこの増加した剪断力に合わせて
設計する必要がある。従来の技術では、肉厚（板厚）の
厚い柱を用いる必要があるので、柱の重量が増大すると
いう問題がある。また、柱の重量の増大を避ける場合
は、柱の材料として高張力鋼を用いることもあるが、材
料コストが増加するという問題がある。If the mounting position of the beam is eccentric as described above, it is necessary to design the strength of the column according to the increased shearing force. In the conventional technique, since it is necessary to use a column having a large wall thickness (plate thickness), there is a problem that the weight of the column increases. Further, in order to avoid an increase in the weight of the column, high tensile steel may be used as the material of the column, but there is a problem that the material cost increases.
【００１１】この発明は、この問題を解決し、梁の取付
け位置が偏心している場合でも、水平力に対する柱の剪
断強度が確保され、かつ重量あるいは材料コストの増加
が少なく抑えられる角形鋼管柱を提供する。The present invention solves this problem and provides a rectangular steel pipe column which can secure the shear strength of the column against horizontal force even when the beam mounting position is eccentric, and can suppress the increase in weight or material cost to a small extent. provide.
【００１２】[0012]
【課題を解決するための手段】請求項１の発明は、断面
がコの字型の鋼材とそれに接合された蓋板を有する角形
鋼管柱において、蓋板の内側に蓋板に平行に剪断補強板
を備え、かつ、この剪断補強板がコの字型の鋼材の互い
に対向する２つの側面の内側に接合されていることを特
徴とする角形鋼管柱である。According to a first aspect of the present invention, in a rectangular steel pipe column having a U-shaped steel material having a U-shaped cross section and a lid plate joined thereto, shear reinforcement is performed inside the lid plate in parallel with the lid plate. A square steel tubular column comprising a plate and the shear reinforcing plate being joined to the inside of two side surfaces of a U-shaped steel material facing each other.
【００１３】請求項２の発明は、剪断補強板と蓋板の板
厚の合計値が、コの字型の鋼材の肉厚の１．３倍以上で
あることを特徴とする請求項１の角形鋼管柱である。According to a second aspect of the present invention, the total thickness of the shear reinforcing plate and the lid plate is 1.3 times or more the wall thickness of the U-shaped steel material. It is a prismatic steel pipe column.
【００１４】請求項３の発明は、剪断補強板と蓋板につ
いて、それぞれの板厚と降伏強度の積の合計値が、コの
字型の鋼材の肉厚と降伏強度の積の１．３倍以上である
ことを特徴とする請求項１の角形鋼管柱である。According to a third aspect of the present invention, the total value of the product of the plate thickness and the yield strength of the shear reinforcing plate and the lid plate is 1.3 of the product of the wall thickness and the yield strength of the U-shaped steel material. The square steel pipe pillar according to claim 1, characterized in that it is at least twice as long.
【００１５】[0015]
【作用】請求項１の発明では、柱の４つの側面のうちの
蓋板で構成される側面の内側に剪断補強板を備えている
ので、この側面に作用する剪断力の一部は剪断補強板に
分配される。その結果、蓋板に作用する剪断力はその分
軽減される。従って、この側面の方に梁を寄せて取り付
けても、蓋板に作用する剪断力が許容限度を超えないよ
うにすることができる。また、柱の重量の増加は剪断補
強板の重量のみで済み、鋼管柱全体からみれば僅かと言
える。According to the first aspect of the present invention, since the shear reinforcing plate is provided inside the side surface formed of the cover plate among the four side surfaces of the column, a part of the shearing force acting on this side surface is shear strengthened. Distributed on boards. As a result, the shearing force acting on the lid plate is reduced accordingly. Therefore, even if the beam is mounted close to this side surface, it is possible to prevent the shearing force acting on the cover plate from exceeding the allowable limit. Further, the weight of the column is increased only by the weight of the shear reinforcing plate, and it can be said that it is slight when viewed from the entire steel pipe column.
【００１６】請求項２の発明では、剪断補強板の板厚を
蓋板と合わせて他の部分の板厚の１．３倍以上としてい
る。その理由を、梁から柱に伝達された水平力が柱の側
面へどのように配分されるか考えながら、以下に説明す
る。According to the second aspect of the present invention, the plate thickness of the shear reinforcement plate is set to 1.3 times or more the plate thickness of the other portion together with the cover plate. The reason will be explained below, considering how the horizontal force transmitted from the beam to the column is distributed to the side surface of the column.
【００１７】図１は、梁を取り付けた角形鋼管柱の断面
を示す断面図である。図中、３は梁、１０は角形鋼管
柱、１１、１２は梁に平行な２つの側面（それぞれ後述
の蓋板とコの字型鋼材の一部とに対応）、２１は剪断補
強板、Ｂは梁の（フランジの）幅、Ｄは角形鋼管柱の寸
法、Ｐは梁の軸方向に作用する水平力、Ｐ０、Ｐ１、Ｐ
２は角形鋼管柱の側面に作用する力をそれぞれ示す。ま
た、図１ａは、角形鋼管柱の蓋板の外面と梁のフランジ
の端面とを同一平面（面一）となるように梁を取り付け
た場合、図１ｂは、柱の中央に梁を取り付けた場合（通
常の梁の取付け方法）をそれぞれ示す。FIG. 1 is a cross-sectional view showing a cross section of a rectangular steel pipe column to which a beam is attached. In the figure, 3 is a beam, 10 is a square steel tube column, 11 and 12 are two side faces parallel to the beam (each corresponds to a lid plate and a part of a U-shaped steel material described later), 21 is a shear reinforcement plate, B is the width (of the flange) of the beam, D is the dimension of the rectangular steel tube column, P is the horizontal force acting in the axial direction of the beam, P0, P1, P
2 shows the force acting on the side surface of the rectangular steel pipe column. In addition, in FIG. 1a, when the beam is attached so that the outer surface of the cover plate of the rectangular steel pipe column and the end face of the flange of the beam are flush with each other (flush), in FIG. 1b, the beam is attached to the center of the column. Cases (ordinary beam mounting method) are shown below.
【００１８】これらの力Ｐ、Ｐ０、Ｐ１、Ｐ２につい
て、それぞれが作用する線について（水平面に投影し
て）考えると、力Ｐでは梁の軸心と一致し、力Ｐ０、Ｐ
１、Ｐ２では柱のそれぞれの側面の板厚の中央と一致す
る。しかし、鋼管柱の板厚は柱や梁の寸法に比べて通常
１桁程度小さい値であるから、以下、簡単のためこれを
無視し、力Ｐ０、Ｐ１、Ｐ２が作用する線の位置を、そ
れぞれの側面の外面の位置に等しくとる。Considering the lines on which these forces P, P0, P1, P2 act (projected on a horizontal plane), the force P coincides with the axis of the beam, and the forces P0, P
In 1 and P2, it coincides with the center of the plate thickness on each side surface of the column. However, since the plate thickness of the steel pipe column is usually a value smaller than the dimension of the column or beam by about an order of magnitude, in the following, for simplicity, this is ignored and the positions of the lines on which the forces P0, P1, P2 act are Equivalent to the position of the outer surface of each side.
【００１９】まず、図１ａの場合について、力の配分を
考える。力Ｐは、梃の原理により力Ｐ１と力Ｐ２に配分
されので、力Ｐ１と力Ｐ２の大きさは、梁の軸心からの
距離に反比例することになる。梁の軸心に平行な２つの
側面と梁の軸心との距離は、図１ａに示すように、梁を
寄せた方の側面１１についてはＢ／２となり、もう一方
の側面１２についてはＤ−Ｂ／２となる。First, consider the distribution of forces for the case of FIG. 1a. Since the force P is distributed to the force P1 and the force P2 by the leverage principle, the magnitude of the force P1 and the force P2 is inversely proportional to the distance from the axis of the beam. As shown in FIG. 1a, the distance between the two side faces parallel to the beam axis and the beam center is B / 2 for the side 11 on the side of the beam and D for the other side 12. -B / 2.
【００２０】以下、Ｐ、Ｐ１、Ｐ２が、それぞれの力の
大きさを表すことにすると、その比は次のようになる。 Ｐ１：Ｐ２＝（Ｄ−Ｂ／２）：（Ｂ／２） （１） これより、Ｐ１＋Ｐ２＝Ｐであることを用いて、Ｐ１と
Ｐの比を求めると、 Ｐ１：Ｐ＝（Ｄ−Ｂ／２）：Ｄ （２） となる。ここで、比（：）を分数（／）に直し、右辺を
Ｄで約分すると、 Ｐ１／Ｐ＝１−Ｂ／２Ｄ （３） となる。従って、梁を寄せた方の側面１１に作用する力
Ｐ１は、 Ｐ１＝（１−Ｂ／２Ｄ）・Ｐ （４） と表すことができる。Hereinafter, assuming that P, P1 and P2 represent the magnitudes of the respective forces, the ratio is as follows. P1: P2 = (D−B / 2) :( B / 2) (1) From this, using the fact that P1 + P2 = P, the ratio of P1 and P is calculated: P1: P = (D−B / 2): It becomes D (2). Here, when the ratio (:) is corrected to a fraction (/) and the right side is reduced by D, P1 / P = 1-B / 2D (3) is obtained. Therefore, the force P1 acting on the side surface 11 closer to the beam can be expressed as P1 = (1−B / 2D) · P (4).
【００２１】次に、この力Ｐ１が、通常の梁の取り付け
方の場合（図１ｂ）に柱の側面に作用する力Ｐ０と比べ
て、何倍に増加しているかについて調べ、その倍率（Ｐ
１／Ｐ０）を求める。通常の梁の取り付け方の場合は、
２つの側面について梁の軸心との距離が等しいので水平
力Ｐは２分される。従って、各側面に作用する力Ｐ０の
大きさはいずれも（Ｐ／２）であり、倍率（Ｐ１／Ｐ
０）は、 Ｐ１／Ｐ０＝２Ｐ１／Ｐ （５） と表される。Next, it is examined how many times this force P1 is increased as compared with the force P0 acting on the side surface of the column in the case of the usual beam mounting method (FIG. 1b), and the magnification (P
1 / P0) is calculated. For normal beam mounting,
Since the distance between the two side surfaces and the axis of the beam is equal, the horizontal force P is divided into two. Therefore, the magnitude of the force P0 acting on each side surface is (P / 2), and the magnification (P1 / P
0) is expressed as P1 / P0 = 2P1 / P (5).
【００２２】更に、式（３）より（Ｐ１／Ｐ）を（１−
Ｂ／２Ｄ）で置き換えれば、 Ｐ１／Ｐ０＝２−Ｂ／Ｄ （６） となる。Further, from the equation (3), (P1 / P) is changed to (1-
B / 2D), P1 / P0 = 2-B / D (6)
【００２３】角形鋼管柱の寸法Ｄに対する梁のフランジ
の幅Ｂの比（Ｂ／Ｄ）は、前述のように０．７以下とな
るよう設計されているから、この倍率（Ｐ１／Ｐ０）即
ち（２−Ｂ／Ｄ）の値は１．３以上となる。これより、
柱の１つの側面を構成する蓋板と剪断補強板の板厚の合
計値を、柱の他の側面即ちコの字型の鋼材に対して、こ
の倍率１．３倍以上に増加させることにより、柱のこの
側面の剪断強度も１．３倍で強化されることになる。そ
の結果上記のように、柱の寸法に対する梁の幅の比が
０．７以下の梁を、柱の側面の蓋板側の角に寄せて取り
付けることが可能となる。Since the ratio (B / D) of the width B of the flange of the beam to the dimension D of the rectangular steel pipe column is designed to be 0.7 or less as described above, this magnification (P1 / P0), that is, The value of (2-B / D) is 1.3 or more. Than this,
By increasing the total value of the plate thickness of the lid plate and the shear reinforcing plate that compose one side of the pillar to 1.3 times or more of the other side of the pillar, that is, the U-shaped steel material. The shear strength of this side of the column will also be strengthened by 1.3 times. As a result, as described above, it is possible to attach a beam having a ratio of the width of the beam to the size of the column of 0.7 or less to the corner of the side face of the column on the side of the cover plate.
【００２４】請求項３の発明では、柱の１つの側面を構
成する蓋板と剪断補強板について、それぞれの板厚と降
伏強度の積の合計値を、柱の他の側面即ちコの字型の鋼
材に対して、この倍率１．３倍以上に増加させているの
で、柱のこの側面の剪断強度もこの倍率で強化される。
従って、請求項２と同様の効果が得られる。According to the third aspect of the present invention, the total value of the product of the plate thickness and the yield strength of each of the lid plate and the shear reinforcing plate constituting one side surface of the column is defined as the other side surface of the column, that is, a U-shape. Since the steel material is increased to 1.3 times or more, the shear strength of this side surface of the column is also strengthened at this magnification.
Therefore, the same effect as the second aspect can be obtained.
【００２５】[0025]
【実施例】図２は、発明の１実施例の角形鋼管柱を分解
して示した斜視図である。図中、１はコの字型鋼材、２
は蓋板、２１は剪断補強板、４はダイヤフラムを示す。
この実施例では、剪断補強板の板厚はコの字型鋼材の肉
厚の０．５倍であり、蓋板と合わせると柱のこの側面の
板厚の合計は１．５倍である。FIG. 2 is an exploded perspective view of a prismatic steel tube column according to an embodiment of the invention. In the figure, 1 is a U-shaped steel material, 2
Is a lid plate, 21 is a shear reinforcement plate, and 4 is a diaphragm.
In this embodiment, the thickness of the shear reinforcing plate is 0.5 times the wall thickness of the U-shaped steel material, and when combined with the cover plate, the total plate thickness of this side surface of the column is 1.5 times.
【００２６】この場合、柱の蓋板側の側面に作用する剪
断力が柱の軸心に取り付けた場合の１．５倍となるま
で、梁の取付け位置を柱の蓋板側の角に寄せることが可
能となる。これについて式（６）を用いて計算すると、
鋼管柱の寸法に対する梁の幅の比（Ｂ／Ｄ）が０．５よ
り大きい梁ならば、柱の蓋板側の角に寄せて取り付ける
ことができることになる。In this case, the mounting position of the beam is brought closer to the corner of the column on the cover plate side until the shearing force acting on the side face of the column on the cover plate side becomes 1.5 times as large as when it is mounted on the axis of the column. It becomes possible. When this is calculated using equation (6),
If the ratio of the width of the beam to the dimension of the steel pipe column (B / D) is larger than 0.5, the beam can be mounted close to the corner of the column on the cover plate side.
【００２７】図３は、この実施例の角形鋼管柱の断面を
示した断面図である。図中の符号は図２に同じである。
剪断補強板２１は、蓋板の内側に蓋板に平行に、コの字
型鋼材の対向する２つの側面の内面に溶接により接合さ
れている。FIG. 3 is a cross-sectional view showing the cross section of the rectangular steel pipe column of this embodiment. Reference numerals in the figure are the same as those in FIG.
The shear reinforcement plate 21 is welded to the inside of the lid plate, parallel to the lid plate, and to the inner surfaces of the two opposite side surfaces of the U-shaped steel material.
【００２８】これらの実施例の角形鋼管柱は、鋼板をプ
レス加工によりコの字型に成形し、コの字型鋼材１を製
作する。この際、２つの折り曲げ部は鋼板の曲げ特性に
もよるが、板厚の数倍の曲げ半径で成形する。その後、
コの字型鋼材１の側面の内側に、矩形のダイヤフラムを
取付けることが多い。In the rectangular steel pipe columns of these examples, a U-shaped steel material 1 is manufactured by forming a steel plate into a U-shape by pressing. At this time, the two bent portions are formed with a bending radius of several times the plate thickness, depending on the bending characteristics of the steel plate. afterwards,
A rectangular diaphragm is often attached to the inside of the side surface of the U-shaped steel material 1.
【００２９】次いで、剪断補強板２１を、コの字型鋼材
１の側面の内側に、すみ肉溶接等で接合する。ここで、
剪断補強板２１は、ダイヤフラム４とコの字型鋼材１の
側面とで囲まれる空間に蓋をするように配置すると、溶
接等の作業がし易くなる。最後に、コの字型鋼材１の側
面と蓋板２を溶接等により接合すれば、鋼管柱が完成す
る。Next, the shear reinforcement plate 21 is joined to the inside of the side surface of the U-shaped steel material 1 by fillet welding or the like. here,
When the shear reinforcing plate 21 is arranged so as to cover the space surrounded by the diaphragm 4 and the side surface of the U-shaped steel material 1, the work such as welding becomes easy. Finally, the side surface of the U-shaped steel material 1 and the cover plate 2 are joined by welding or the like to complete the steel pipe column.
【００３０】ここで、剪断補強板の取付け位置は、蓋板
に近い程即ち柱の軸心から離れている程、剪断力を分担
する上で好ましい。但し、あまり蓋板の取付け位置に接
近させて取り付けると、接合部に形成される溶接ビード
により蓋板が取り付けにくくなるので、その分の余裕を
見て取り付けることが望ましい。また、剪断補強板は蓋
板に平行に取り付けるが、平行度は特に高い必要はな
い。但し、あまり平行度が悪いと、コの字型鋼材の側面
との隙間が開きすぎて溶接しにくくなり、また、剪断補
強板の接合強度が低下する。従って、通常の溶接作業が
できる程度の平行度は必要である。Here, the closer to the lid plate the mounting position of the shear reinforcing plate is, the more distant from the axis of the column, the more preferable it is to share the shearing force. However, if the lid plate is mounted too close to the mounting position of the lid plate, the welding bead formed at the joint makes it difficult to mount the lid plate. Further, the shear reinforcing plate is attached in parallel to the lid plate, but the parallelism need not be particularly high. However, if the degree of parallelism is too poor, the gap between the side surface of the U-shaped steel material becomes too wide and welding becomes difficult, and the joint strength of the shear reinforcement plate decreases. Therefore, the parallelism is required to the extent that ordinary welding work can be performed.
【００３１】図４は、発明の他の実施例における剪断補
強板とダイヤフラムの取付け方を示す図である。図中、
４１は当て金を示し、他の符号は図２と同様である。当
て金４１は、矩形断面の棒鋼等でできており、各２本１
組でダイヤフラムの両面に溶接されている。図４ａにお
いては、剪断補強板はこれらの当て金４１、４１に接合
されている。図４ｂにおいては、剪断補強板は２枚のダ
イヤフラム４、４の当て金４１、４１に近い位置にじか
に溶接されている。FIG. 4 is a view showing how to attach the shear reinforcing plate and the diaphragm in another embodiment of the invention. In the figure,
Reference numeral 41 indicates a reliance, and other reference numerals are the same as those in FIG. The pad 41 is made of steel bar or the like having a rectangular cross section, and each one has two pieces.
It is welded to both sides of the diaphragm as a set. In FIG. 4a, the shear reinforcement plates are joined to these patches 41,41. In FIG. 4b, the shear reinforcement plate is directly welded to the two diaphragms 4, 4 at positions close to the backing plates 41, 41.
【００３２】このように接合することにより、剪断補強
板２１、２枚のダイヤフラム４、およびコの字型鋼材１
の３つの側面により、直方体が形成されることになる。
その結果、剪断補強板とダイヤフラムのそれぞれのエッ
ジ部は、互いに接合されない場合と比べて、座屈しにく
くなるという効果も期待できる。By joining in this way, the shear reinforcing plate 21, the two diaphragms 4, and the U-shaped steel material 1
A rectangular parallelepiped is formed by the three side surfaces.
As a result, it is expected that the edge portions of the shear reinforcing plate and the diaphragm are less likely to buckle as compared with the case where they are not joined to each other.
【００３３】図５は、以上の実施例の角形鋼管柱に梁を
取り付けた場合の縦断面を示す縦断面図である。図中、
３１は梁フランジ、３２は梁ウェブを示し、他の符号は
図２に同じである。剪断補強板２１の寸法は、梁３の高
さ方向の寸法と同一に製作されているが、これは梁の仕
口部の寸法より小さくなければよく、製作上の観点から
適宜決めてよい。FIG. 5 is a vertical cross-sectional view showing a vertical cross section when a beam is attached to the prismatic steel pipe column of the above embodiment. In the figure,
Reference numeral 31 is a beam flange, 32 is a beam web, and other reference numerals are the same as in FIG. The size of the shear reinforcing plate 21 is manufactured to be the same as the size of the beam 3 in the height direction, but it is sufficient that it is not smaller than the size of the joint portion of the beam, and may be appropriately determined from the viewpoint of manufacturing.
【００３４】図６は、図５と同様、実施例の角形鋼管柱
に梁を取り付けた場合の横断面を示す横断面図である。
梁フランジ３１の一方の端面は、蓋板２の表面と同一平
面（面一）に取り付けられている。Similar to FIG. 5, FIG. 6 is a cross-sectional view showing a cross section when a beam is attached to the prismatic steel pipe column of the embodiment.
One end surface of the beam flange 31 is mounted on the same plane (flush) as the surface of the lid plate 2.
【００３５】また、板厚又は降伏強度の増加に制限があ
る場合でも、両者の組み合わせで、同じ効果を得ること
ができる。例えば、柱の寸法Ｄに対する梁の幅Ｂの比
（Ｂ／Ｄ）が０．４の場合、蓋板の板厚として必要であ
るのは、前述の式（６）で計算するとコの字型の鋼材の
肉厚の１．６倍となる。しかし、構造材の軽量化の観点
から、剪断補強板の板厚の許容限が他の部分の肉厚の
０．５倍とされた場合は、設計不能となる。Even if there is a limit to the increase in plate thickness or yield strength, the same effect can be obtained by combining the two. For example, when the ratio of the width B of the beam to the dimension D of the column (B / D) is 0.4, the required thickness of the cover plate is that it has a U-shape when calculated by the formula (6). 1.6 times the thickness of the steel material. However, from the viewpoint of reducing the weight of the structural material, if the allowable limit of the thickness of the shear reinforcing plate is set to 0.5 times the wall thickness of other portions, it becomes impossible to design.
【００３６】このような場合は、剪断補強板をＪＩＳ規
格のＳＭ４９０で製作すれば、コの字型の鋼材や蓋板
（通常は材料コストの観点からＪＩＳ規格のＳＳ４０
０）に対して、降伏強度を１．２倍程度高くすることが
できる。その結果、剪断補強板の強度は板厚０．５倍×
降伏強度１．２倍で、コの字型の鋼材や蓋板の０．６倍
となる。従って、剪断補強板と蓋板を合わせた強度はコ
の字型鋼材の１．６倍となり、必要な剪断強度を確保で
きる。In such a case, if the shear reinforcing plate is manufactured by JIS standard SM490, a U-shaped steel material or a cover plate (usually JIS standard SS40 from the viewpoint of material cost).
0), the yield strength can be increased by about 1.2 times. As a result, the strength of the shear reinforcement plate is 0.5 times the plate thickness.
The yield strength is 1.2 times, which is 0.6 times that of U-shaped steel and lid plate. Therefore, the combined strength of the shear reinforcing plate and the lid plate is 1.6 times that of the U-shaped steel material, and the necessary shear strength can be secured.
【００３７】[0037]
【発明の効果】この発明では、角形鋼管柱の４つの側面
のうちの１つを構成する蓋板の内側に剪断補強板を設
け、蓋板側の側面の剪断強度を他の側面より所定の倍率
で強化することにより、柱の他の部分の重量や材料コス
トを増加させることなく、梁を蓋板側の柱の角に寄せて
取り付けることが可能となる。According to the present invention, a shear reinforcing plate is provided inside a lid plate that constitutes one of the four side surfaces of a rectangular steel tubular column, and the shear strength of the side surface on the lid plate side is set to a predetermined value compared to the other side surfaces. By strengthening with a magnification, it becomes possible to attach the beam close to the corner of the column on the cover plate side without increasing the weight and material cost of other portions of the column.
【図１】梁を取り付けた角形鋼管柱の断面を示す断面
図。FIG. 1 is a cross-sectional view showing a cross section of a rectangular steel tube column to which a beam is attached.
【図２】発明の１実施例の角形鋼管柱を分解して示した
斜視図。FIG. 2 is an exploded perspective view of a rectangular steel tube column according to an embodiment of the invention.
【図３】この実施例の角形鋼管柱の断面を示した断面
図。FIG. 3 is a cross-sectional view showing a cross section of a rectangular steel tube column of this example.
【図４】他の実施例における剪断補強板とダイヤフラム
の取付け方を示す図。FIG. 4 is a diagram showing how to attach a shear reinforcing plate and a diaphragm in another embodiment.
【図５】角形鋼管柱に梁を取り付けた場合の縦断面を示
す縦断面図。FIG. 5 is a vertical cross-sectional view showing a vertical cross section when a beam is attached to a rectangular steel pipe column.
【図６】角形鋼管柱に梁を取り付けた場合の横断面を示
す横断面図。FIG. 6 is a cross-sectional view showing a cross-section when a beam is attached to a rectangular steel pipe column.
１ コの字型鋼材 ２ 蓋板 ２１ 剪断補強板 1 U-shaped steel material 2 Lid plate 21 Shear reinforcement plate
フロントページの続き (72)発明者 井 英浩 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 岡本 晴仁 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 中村 信行 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 大島 正隆 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 藤原 吉幸 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内Front Page Continuation (72) Inventor Hidehiro I I 1-2-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Tube Co., Ltd. (72) In-house Haruhito Okamoto 1-2 1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd. In-house (72) Inventor Nobuyuki Nakamura 1-2, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Tube Co., Ltd. (72) In-house Masataka Oshima 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Tube Co., Ltd. (72) Inventor Yoshiyuki Fujiwara 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Tube Co., Ltd.
Claims (3)
た蓋板を有する角形鋼管柱において、蓋板の内側に蓋板
に平行に剪断補強板を備え、かつ、この剪断補強板がコ
の字型の鋼材の互いに対向する２つの側面の内側に接合
されていることを特徴とする角形鋼管柱。1. A rectangular steel pipe column having a U-shaped steel material having a U-shaped cross section and a cover plate joined to the steel plate, wherein a shear reinforcing plate is provided inside the cover plate in parallel with the cover plate, and the shear reinforcing plate is provided. A rectangular steel pipe column characterized by being joined to the inside of two side surfaces of a U-shaped steel material facing each other.
の字型の鋼材の肉厚の１．３倍以上であることを特徴と
する請求項１の角形鋼管柱。2. The rectangular steel pipe column according to claim 1, wherein the total thickness of the shear reinforcing plate and the cover plate is 1.3 times or more the wall thickness of the U-shaped steel material.
板厚と降伏強度の積の合計値が、コの字型の鋼材の肉厚
と降伏強度の積の１．３倍以上であることを特徴とする
請求項１の角形鋼管柱。3. The total value of the product of the plate thickness and the yield strength of the shear reinforcing plate and the cover plate is 1.3 times or more the product of the wall thickness of the U-shaped steel material and the yield strength. The rectangular steel pipe column according to claim 1, characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16176794A JPH0827952A (en) | 1994-07-14 | 1994-07-14 | Rectangular steel-pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16176794A JPH0827952A (en) | 1994-07-14 | 1994-07-14 | Rectangular steel-pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0827952A true JPH0827952A (en) | 1996-01-30 |
Family
ID=15741518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16176794A Pending JPH0827952A (en) | 1994-07-14 | 1994-07-14 | Rectangular steel-pipe column |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0827952A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101106712B1 (en) * | 2011-04-29 | 2012-01-18 | 주식회사 에이스이엔씨 | Stiffness reinforced structure and method of precast concrete box beam |
| CN106925950A (en) * | 2015-12-31 | 2017-07-07 | 西安核设备有限公司 | A kind of large-scale double-layer thin wall D types section vacuum chamber interlayer flow path groove steel making process |
| KR102196491B1 (en) * | 2020-08-11 | 2020-12-29 | (주)힐엔지니어링 | Manufacturing method of cft column and cft column using the smae |
| KR20210115812A (en) * | 2020-03-16 | 2021-09-27 | 이병희 | Sqaure shape steel pipe with opening for distribution of rebar and manufacturing method of the same and steel beam join structure using the same |
-
1994
- 1994-07-14 JP JP16176794A patent/JPH0827952A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101106712B1 (en) * | 2011-04-29 | 2012-01-18 | 주식회사 에이스이엔씨 | Stiffness reinforced structure and method of precast concrete box beam |
| CN106925950A (en) * | 2015-12-31 | 2017-07-07 | 西安核设备有限公司 | A kind of large-scale double-layer thin wall D types section vacuum chamber interlayer flow path groove steel making process |
| KR20210115812A (en) * | 2020-03-16 | 2021-09-27 | 이병희 | Sqaure shape steel pipe with opening for distribution of rebar and manufacturing method of the same and steel beam join structure using the same |
| KR102196491B1 (en) * | 2020-08-11 | 2020-12-29 | (주)힐엔지니어링 | Manufacturing method of cft column and cft column using the smae |
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