JP6834348B2 - Shaped steel support structure and how to use shaped steel - Google Patents

Shaped steel support structure and how to use shaped steel Download PDF

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JP6834348B2
JP6834348B2 JP2016211375A JP2016211375A JP6834348B2 JP 6834348 B2 JP6834348 B2 JP 6834348B2 JP 2016211375 A JP2016211375 A JP 2016211375A JP 2016211375 A JP2016211375 A JP 2016211375A JP 6834348 B2 JP6834348 B2 JP 6834348B2
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shaped steel
flange
steel
support structure
web
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JP2018071172A (en
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明良 彦坂
明良 彦坂
徹 家成
徹 家成
冨村　宏紀
宏紀 冨村
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Nippon Steel Corp
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Description

本発明は、第１及び第２フランジを有する形鋼を備えた形鋼支持構造及び形鋼の使用方法に関する。 The present invention relates to a shaped steel support structure including shaped steel having first and second flanges and a method of using the shaped steel.

従来用いられていたこの種の形鋼としては、例えば下記の特許文献１等に示されている構成を挙げることができる。すなわち、従来構成では、ウェブ及びフランジを有する形鋼において、ウェブとフランジとの構成を変えることにより、ウェブの強度とフランジの強度との間に差を設けることが行われている。一方で、ウェブの両端に配置された第１及び第２フランジには同じ材料が用いられている。 Examples of this type of shaped steel that have been conventionally used include the configurations shown in Patent Document 1 and the like below. That is, in the conventional configuration, in the shaped steel having the web and the flange, a difference is provided between the strength of the web and the strength of the flange by changing the configuration of the web and the flange. On the other hand, the same material is used for the first and second flanges arranged at both ends of the web.

特公平７−６８７３８号公報Special Fair 7-68738 Gazette

例えば梁やレール等、形鋼の両端部を支点して中央部分が反る部材として形鋼を使用することがある。このような使用態様では、第１及び第２フランジの一方は曲げ内側に位置するために圧縮力を受け、第１及び第２フランジの他方は曲げ外側に位置するために引張力を受ける。 For example, a shaped steel may be used as a member such as a beam or a rail whose central portion warps at both ends of the shaped steel. In such a usage, one of the first and second flanges receives a compressive force because it is located inside the bend, and the other of the first and second flanges receives a tensile force because it is located outside the bend.

形鋼を構成する鋼は、引張力に対しては耐性を有するが圧縮力に対して弱いという特性を有している。このため、上記のような従来構成のように第１及び第２フランジに同じ材料を用いた場合、圧縮力への耐力を基準に第１及び第２フランジの強度を設定することになり、引張力を受ける第１及び第２フランジの他方は必要以上の強度を有することになる。強度が高い材料を用いると、材料コストが増大してしまう。 The steels that make up the shaped steel have the property of being resistant to tensile forces but weak against compressive forces. Therefore, when the same material is used for the first and second flanges as in the conventional configuration as described above, the strength of the first and second flanges is set based on the proof stress against the compressive force, and the tension is increased. The other of the first and second flanges that receive the force will have more strength than necessary. If a material having high strength is used, the material cost increases.

本発明は、上記のような課題を解決するためになされたものであり、その目的は、想定される圧縮力及び引張力に対する十分な耐性を確保しつつ、材料コストの増大を回避できる形鋼支持構造及び形鋼の使用方法を提供することである。 The present invention has been made to solve the above problems, and an object of the present invention is to form a shaped steel that can avoid an increase in material cost while ensuring sufficient resistance to assumed compressive force and tensile force. It is to provide a support structure and a method of using shaped steel.

本発明に係る形鋼支持構造は、板状の鋼材である第１及び第２フランジを有する形鋼を備え、第２フランジは、第１フランジよりも引張強さが高い鋼材により構成されており、形鋼は、両端部が支えられているとともに、第２フランジが曲げ内側に位置するように配置されている。 The shaped steel support structure according to the present invention includes shaped steel having first and second flanges, which are plate-shaped steel materials, and the second flange is made of a steel material having a higher tensile strength than the first flange. , Both ends of the shaped steel are supported, and the second flange is arranged so as to be located inside the bend .

また、本発明に係る形鋼の使用方法は、板状の鋼材である第１及び第２フランジを有する形鋼の使用方法であって、第２フランジは第１フランジよりも引張強さが高い鋼材により構成されており、両端部が支えられるとともに、第２フランジが曲げ内側に位置するように形鋼を配置することを含む。 Further, the method of using the shaped steel according to the present invention is a method of using the shaped steel having the first and second flanges which are plate-shaped steel materials, and the second flange has a higher tensile strength than the first flange. It is made of steel, and includes supporting both ends and arranging the shaped steel so that the second flange is located inside the bend.

本発明の形鋼支持構造及び形鋼の使用方法によれば、第１フランジよりも引張強さが高い鋼材により構成された第２フランジが曲げ内側に位置するように形鋼が配置されるので、想定される圧縮力及び引張力に対する十分な耐性を確保しつつ、材料コストの増大を回避できる。
According to the shaped steel support structure and the method of using the shaped steel of the present invention, the shaped steel is arranged so that the second flange made of a steel material having a higher tensile strength than the first flange is located inside the bending. It is possible to avoid an increase in material cost while ensuring sufficient resistance to the assumed compressive and tensile forces.

本発明の実施の形態による形鋼を示す斜視図である。It is a perspective view which shows the shaped steel by embodiment of this invention. 図１の形鋼の使用方法を示す説明図である。It is explanatory drawing which shows the use method of the shaped steel of FIG.

以下、本発明を実施するための形態について、図面を参照して説明する。
実施の形態
図１は、本発明の実施の形態による形鋼を示す斜視図である。図１に示すように、本実施の形態の形鋼１は、ウェブ１０、下フランジ１１（第１フランジ）及び上フランジ１２（第２フランジ）を有するＨ形鋼である。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment FIG. 1 is a perspective view showing a shaped steel according to an embodiment of the present invention. As shown in FIG. 1, the shaped steel 1 of the present embodiment is an H-shaped steel having a web 10, a lower flange 11 (first flange), and an upper flange 12 (second flange).

これらウェブ１０、下フランジ１１及び上フランジ１２は、長手状の板材であり、全体として断面形状がＨ形となるように互いに接合されている。すなわち、ウェブ１０の幅方向ＷＷの一端（下端）に下フランジ１１が接合され、ウェブ１０の幅方向ＷＷの他端（上端）に上フランジ１２が接合されている。下フランジ１１及び上フランジ１２は、それら下フランジ１１及び上フランジ１２の幅方向ＷＦがウェブ１０の幅方向ＷＷと交わるように延在されている。ウェブ１０の幅方向ＷＷと下フランジ１１及び上フランジ１２の幅方向ＷＦとが互いに直交していることが好ましい。 The web 10, the lower flange 11, and the upper flange 12 are long plate members, and are joined to each other so that the cross-sectional shape is H-shaped as a whole. That is, the lower flange 11 is joined to one end (lower end) in the width direction W W of the web 10, the upper flange 12 is joined to the other end in the width direction W W of the web 10 (the upper end). The lower flange 11 and upper flange 12 has a width direction W F thereof under the flange 11 and the upper flange 12 is extended so as to intersect with the width direction W W of the web 10. It is preferable that the width direction W F in the width direction W W and the lower flange 11 and upper flange 12 of the web 10 are orthogonal to each other.

上フランジ１２は、下フランジ１１よりも強度が高い素材によって構成されている。例えば、下フランジ１１には引張強さが４９０Ｎ／ｍｍ２級の鋼材を使用し、上フランジ１２には引張強さが５９０Ｎ／ｍｍ２級の鋼材を使用し、ウェブ１０には引張強さが４００Ｎ／ｍｍ２級、４９０Ｎ／ｍｍ２級又は５９０Ｎ／ｍｍ２級の鋼材を使用することができる。 The upper flange 12 is made of a material having higher strength than the lower flange 11. For example, the lower flange 11 uses a steel material having a tensile strength of 490 N / mm class 2 , the upper flange 12 uses a steel material having a tensile strength of 590 N / mm class 2 , and the web 10 has a tensile strength. 400 N / mm 2 grade, can be used 490 N / mm 2 primary or 590N / mm 2 class steels.

次に、図２は、図１の形鋼１の使用方法を示す説明図である。形鋼１は、例えば梁やレール等、両端部が支えられる態様で使用される。このような態様で使用されているとき、上方からの負荷Ｌが形鋼１に作用すると、両端部を支点して形鋼１の中央部分が反る。本実施の形態の形鋼１は、反りの曲げ外側に下フランジ１１が位置し、反りの曲げ内側に上フランジ１２が位置するように配置されている。 Next, FIG. 2 is an explanatory view showing a method of using the shaped steel 1 of FIG. The shaped steel 1 is used in a manner in which both ends are supported, such as a beam or a rail. When used in such an embodiment, when a load L from above acts on the shaped steel 1, the central portion of the shaped steel 1 warps with both ends as fulcrums. In the shaped steel 1 of the present embodiment, the lower flange 11 is located on the outer side of the warp bend, and the upper flange 12 is located on the inner side of the warp bend.

上述のように形鋼１が配置されている場合、下フランジ１１には引張力ＦＴが作用し、上フランジ１２には圧縮力ＦＣが作用する。形鋼１を構成する鋼は、引張力ＦＴに対しては耐性を有するが圧縮力ＦＣに対して弱いという特性を有している。このため、圧縮力ＦＣを受ける上フランジ１２に相対的に強度が高い鋼種を使用する一方で、引張力ＦＴを受ける下フランジ１１に相対的に強度が低い鋼種を使用することで、想定される圧縮力ＦＣ及び引張力ＦＴに対する十分な耐性を確保しつつ、材料コストの増大を回避できる。 If shaped steel 1 as described above is arranged, the tensile force F T acts on the lower flange 11, the upper flange 12 compressive force F C is applied. Steel forming the structural steel 1 has a resistance against the tensile force F T has a characteristic of being weak against the compressive force F C. Thus, while relatively strength to the flange 12 on receiving the compressive force F C uses high steel type, by relatively strength lower flange 11 which receives a tensile force F T uses lower steel type, assuming while ensuring a sufficient resistance to the compression force F C and a tensile force F T is, it can avoid an increase in material cost.

このような形鋼１及びその使用方法では、下フランジ１１よりも強度が高い素材により構成された上フランジ１２が曲げ内側に位置するように形鋼１が配置されるので、想定される圧縮力ＦＣ及び引張力ＦＴに対する十分な耐性を確保しつつ、材料コストの増大を回避できる。 In such a shaped steel 1 and its usage, the shaped steel 1 is arranged so that the upper flange 12 made of a material having a strength higher than that of the lower flange 11 is located inside the bending, so that the assumed compressive force is assumed. while ensuring a sufficient resistance to F C and a tensile force F T, it can avoid an increase in material cost.

なお、実施の形態では、形鋼１がＨ形鋼であるように説明したが、例えば溝形鋼やＺ形鋼等の２つのフランジを有する他の断面形状の形鋼にも本願発明を適用することができる。 In the embodiment, it has been described that the shaped steel 1 is an H-shaped steel, but the present invention is also applied to a shaped steel having two flanges such as a channel steel and a Z-shaped steel. can do.

１ 形鋼
１０ ウェブ
１１ 下フランジ
１２ 上フランジ 1 Shaped steel 10 Web 11 Lower flange 12 Upper flange

Claims (2)

板状の鋼材である第１及び第２フランジを有する形鋼
を備え、
前記第２フランジは、前記第１フランジよりも引張強さが高い鋼材により構成されており、
前記形鋼は、両端部が支えられているとともに、前記第２フランジが曲げ内側に位置するように配置されている
形鋼支持構造。 It is provided with shaped steel having first and second flanges, which are plate-shaped steel materials.
The second flange is made of a steel material having a higher tensile strength than the first flange.
Both ends of the shaped steel are supported, and the second flange is arranged so as to be located inside the bend .
Shaped steel support structure. 板状の鋼材である第１及び第２フランジを有する形鋼の使用方法であって、前記第２フランジは前記第１フランジよりも引張強さが高い鋼材により構成されており、
両端部が支えられるとともに、前記第２フランジが曲げ内側に位置するように前記形鋼を配置すること
を含む形鋼の使用方法。 A method of using a shaped steel having first and second flange is a plate-like steel, the second flange is composed of steel is higher tensile strength than said first flange,
A method of using a shaped steel, which comprises arranging the shaped steel so that both ends are supported and the second flange is located inside the bend.
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JPH04366257A (en) * 1991-06-14 1992-12-18 Sumitomo Metal Ind Ltd Building structure employing box column made of different steel materials
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JPH08284310A (en) * 1995-04-19 1996-10-29 Sumitomo Metal Ind Ltd Combined beam material
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