JP4457234B2 - Structural steel and steel structures - Google Patents

Structural steel and steel structures Download PDF

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JP4457234B2
JP4457234B2 JP2005365044A JP2005365044A JP4457234B2 JP 4457234 B2 JP4457234 B2 JP 4457234B2 JP 2005365044 A JP2005365044 A JP 2005365044A JP 2005365044 A JP2005365044 A JP 2005365044A JP 4457234 B2 JP4457234 B2 JP 4457234B2
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structural steel
steel material
steel
plasticized
framework
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JP2007169904A (en
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厚 渡辺
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Nippon Steel Corp
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Description

本発明は、構造用鋼材および鋼構造物に関する。   The present invention relates to a structural steel material and a steel structure.

従来、建築や土木の分野において、鋼構造物（建物や橋梁）の骨組みを構成する構造用鋼材として、地震時変形性能（靱性）を高めるために各種の化学成分を添加したものが知られている（例えば、特許文献１、２参照）。このような鋼材、あるいは高張力鋼では、変形性能を高めるために、降伏比（降伏強度／引張強度）が８５％以下になるように成分調整や熱処理が行われている。 Conventionally, in the field of construction and civil engineering, structural steel materials that make up the framework of steel structures (buildings and bridges) are known to contain various chemical components added to improve deformation performance (toughness) during earthquakes. (For example, refer to Patent Documents 1 and 2). In such a steel material or high-tensile steel , component adjustment and heat treatment are performed so that the yield ratio (yield strength / tensile strength) is 85% or less in order to improve the deformation performance.

特開平１０−２８００８８号公報JP-A-10-280088 特開２０００−３２８１７５号公報JP 2000-328175 A

しかしながら、前記特許文献１、２に記載された鋼材や高張力鋼では、添加する化学成分が非常に多種類となってしまうとともに、希少金属（レアメタルであり、例えば、ニッケルＮｉ、クロムＣｒ、マンガンＭｎ、モリブデンＭｏ等）を用いることから、原料コストが増加し、製鉄工程が高度化、複雑化してしまうという問題がある。
さらに、降伏比を８５％以下に下げるために熱処理の工程が複雑となり、かつ熱処理条件を厳しく管理しなければならず、高度かつ複雑な製造装置や制御装置等が必要になるため、製造設備が大規模化して製造効率が低下してしまうという問題もある。
ところで、降伏比を低く抑えずに８５％よりも高くした高張力鋼の場合には、低コストで製造できるものの、変形性能が劣るために、塑性化する部位に使用することがが望ましくない。一方、高張力鋼でありかつ降伏比を低くすることは、上述のように、製造上難しくかつコストがかかってしまう。 However, in the steel materials and high-tensile steels described in Patent Documents 1 and 2, the chemical components to be added are very various, and rare metals (rare metals such as nickel Ni, chromium Cr, manganese, etc. Since Mn, molybdenum Mo, etc.) are used, there is a problem that the raw material cost increases and the iron making process becomes sophisticated and complicated.
Furthermore, in order to reduce the yield ratio to 85% or less, the heat treatment process becomes complicated, and the heat treatment conditions must be strictly controlled, and advanced and complicated production equipment and control equipment are required. There is also a problem that the production efficiency decreases due to the increase in scale.
By the way, in the case of high-tensile steel made higher than 85% without keeping the yield ratio low, although it can be manufactured at a low cost, it is not desirable to use it in a plasticized part because of poor deformation performance. On the other hand, as described above, it is difficult to manufacture and costly to use high-tensile steel and to lower the yield ratio.

本発明の目的は、製造コストを低減しかつ製造効率を高めることができる構造用鋼材、およびこの構造用鋼材を特定の部位に限定して用いた鋼構造物を提供することにある。   An object of the present invention is to provide a structural steel material capable of reducing the manufacturing cost and increasing the manufacturing efficiency, and a steel structure using the structural steel material limited to a specific portion.

本発明の請求項１に記載の構造用鋼材は、鋼構造物の骨組みを構成する構造用鋼材であって、前記鋼構造物に作用する荷重によって塑性化しない部位に用いられ、前記骨組み中の塑性化する可能性のある部位に用いる鋼材に対して２倍程度以上の降伏強度を有した高張力鋼であり、前記塑性化する可能性のある部位に対して溶接以外の接合方法（ボルト−ナット接合、リベット接合）によって接合可能に構成されていることを特徴とする。
ここで、鋼構造物に作用する荷重によって塑性化しない部位とは、荷重によって骨組みがメカニズム状態となって、骨組みの所定の部位が塑性化（降伏）し、骨組み全体として所定の耐力を保有した状態で変形が増大する状態、例えば、地震による水平荷重が作用した場合の保有水平耐力時における骨組みの応力−変形状態においても降伏しない部位（あるいは部材）を意味する。すなわち、メカニズム状態においては、骨組みの所定部位、例えば、大梁の端部や柱の柱脚部、筋交い（ブレース）、制震部材などの部位が降伏するものの、降伏することなく弾性状態を維持する（塑性化しない）部位が存在し、この部位に本発明の高張力鋼からなる構造用鋼材を用いる。この高張力鋼としては、骨組みの所定部位の母材に用いられる鋼材と比較して、２倍程度以上の降伏強度を有したものが望ましい。 The structural steel material according to claim 1 of the present invention is a structural steel material that constitutes a framework of a steel structure, and is used for a portion that is not plasticized by a load acting on the steel structure . It is a high- strength steel having a yield strength about twice or more that of a steel material used for a portion that may be plasticized, and a joining method other than welding (bolt- nut joint, characterized that you have been joined can be constituted by a rivet connection).
Here, the portion that is not plasticized by the load acting on the steel structure means that the framework is in a mechanical state by the load, and a predetermined portion of the framework is plasticized (yield), and the entire framework has a predetermined yield strength. It means a portion (or member) that does not yield even in a state in which deformation increases in a state, for example, in a stress-deformation state of a framework at the time of retained horizontal proof stress when a horizontal load is applied due to an earthquake. That is, in the mechanical state, although a predetermined part of the frame, for example, a part of the end of a beam, a column base part, a brace, a vibration control member, or the like yields, the elastic state is maintained without yielding. There is a site (not plasticized), and the structural steel material made of the high-strength steel of the present invention is used in this site. As the high-tensile steel, compared with steel used for the base material of the framework of a given site, the ash has a yield strength of at least about twice is preferable.

以上の本発明によれば、塑性化しない（降伏しない）部位に用いることで、降伏後の変形性能（靱性、延性等）に関して高い性能が必要なくなり、従来のような多種類で希少かつ高価な金属を含む化学成分を添加しなくてもよくなる、あるいは添加量を減らせるため、原料コストが削減できるとともに製鉄工程が簡単化でき、製造コストを低減することができる。さらに、高い変形性能が必要なくなることで、必ずしも降伏比を８０％以下に下げなくてもよくなるため、熱処理の工程を簡単化することができ、小規模な製造設備によっても高効率で製造することができる。
また、高張力鋼とすることで、さらに降伏しにくくできるとともに、部材断面を小さくすることができる、すなわち骨組み重量を軽くすることができ、低コスト化を促進させることができるとともに、鋼構造物の施工作業（運搬や建て方）の効率化も図ることができる。 According to the present invention as described above, it is not necessary to provide high performance with respect to deformation performance (toughness, ductility, etc.) after yielding by using it in a portion that is not plasticized (not yielded). Since it is not necessary to add a chemical component containing a metal or the amount of addition can be reduced, the raw material cost can be reduced, the iron making process can be simplified, and the manufacturing cost can be reduced. Furthermore, since the high deformation performance is not necessary, the yield ratio does not necessarily have to be reduced to 80% or less, so that the heat treatment process can be simplified, and high-efficiency manufacturing is possible even with a small-scale manufacturing facility. Can do.
In addition, by using high-tensile steel, it is possible to make it more difficult to yield, and to reduce the cross-section of the member, that is, the weight of the framework can be reduced, cost reduction can be promoted, and the steel structure The efficiency of construction work (transportation and building) can be improved.

さらに、本発明によれば、溶接以外の接合方法（ボルト−ナット接合、リベット接合）によって接合されていることから、構造用鋼材における溶接性に関しても高い性能が必要なくなるので、さらに添加する化学成分をなくす、あるいは減らして製造コストを低減させることができる。 Furthermore, according to the present invention, the bonding method other than welding (Bolt - nut joint, rivet connection) because it is joined by, since no need higher performance with respect to weldability in structural steel, chemical further addition Components can be eliminated or reduced to reduce manufacturing costs.

また、本発明の請求項２に記載の構造用鋼材は、請求項１に記載の構造用鋼材において、当該構造用鋼材の降伏比が９０％以上であることを特徴とする。
ここで、降伏比が９０％以上の鋼材としては、高張力鋼の製造工程において「As ROLL
材（HOT材）」といわれ、熱処理をしない空冷（自然に冷えるのを待つ）により製造され
、生産効率が非常に高い鋼材であることが好ましい。
このような構成によれば、熱処理の工程をより一層簡単化することができ、製造効率をさらに高めることができる。 The structural steel material according to claim 2 of the present invention is characterized in that, in the structural steel material according to claim 1, the yield ratio of the structural steel material is 90% or more.
Here, as a steel material having a yield ratio of 90% or more, "As ROLL"
It is referred to as “material (HOT material)”, and is preferably a steel material that is manufactured by air cooling without heat treatment (waiting for natural cooling) and has extremely high production efficiency.
According to such a configuration, the heat treatment process can be further simplified, and the production efficiency can be further increased.

さらに、本発明の請求項３に記載の構造用鋼材は、請求項１または請求項２に記載の構造用鋼材において、前記骨組み中のボルト接合部において母材同士を接合する添え板に用いられることを特徴とする。
このような構成によれば、高張力鋼からなる構造用鋼材を添え板（スプライスプレート）に用いることで、添え板の厚さ寸法を小さくすることができ、軽量化が図れるとともに、接合する母材間に多少の段差（はだすき）があったとしても、この段差に沿って添え板が曲がりやすくなることで追従可能になり、接合性能を向上させることができる。すなわち、従来の添え板は、母材と同等の強度を有した鋼材から形成されており、厚さ寸法が大きくて曲がりにくかったため、母材間の段差に追従しにくく、母材と添え板との間に隙間が生じてしまうようなことがあり、接合性能を確保するためには、フィラープレート等を隙間に挟む必要があった。これに対して、本発明では、添え板が母材間の段差に追従しやすくなるため、フィラープレートを用いなくても接合性能を確保することができる。 Furthermore, the structural steel material according to claim 3 of the present invention is used in the structural steel material according to claim 1 or claim 2 as an attachment plate for joining the base materials to each other at a bolt joint portion in the frame. It is characterized by that.
According to such a configuration, by using a structural steel material made of high-strength steel for the splicing plate (splice plate), the thickness of the splicing plate can be reduced, the weight can be reduced, and the mother to be joined Even if there is a slight step (protrusion) between the materials, the attachment plate can be easily bent along the step, thereby making it possible to follow and improve the bonding performance. That is, the conventional plate is formed of a steel material having the same strength as the base material, and has a large thickness and is difficult to bend, so it is difficult to follow the step between the base materials. In order to ensure the bonding performance, it was necessary to sandwich a filler plate or the like in the gap. On the other hand, in the present invention, the attachment plate can easily follow the step between the base materials, so that the joining performance can be ensured without using a filler plate.

また、本発明の請求項４に記載の構造用鋼材は、請求項１または請求項２に記載の構造用鋼材において、前記骨組み中の梁中央材、小梁、ガセットプレート、およびボルト接合による柱梁接合材のうちの少なくともいずれかに用いられることを特徴とする。
このような構成によれば、梁中央材や小梁、ガセットプレート等、メカニズム状態において通常塑性化しない部位や、塑性化しないように設計されることが一般的なボルト接合による柱梁接合材に、本発明の構造用鋼材を用いることで、鋼構造物全体におけるコスト低減を図ることができる。 Moreover, the structural steel material according to claim 4 of the present invention is the structural steel material according to claim 1 or 2 , wherein the beam center member, the small beam, the gusset plate, and the column by bolt connection in the frame. It is used for at least one of the beam joint materials.
According to such a configuration, the beam center material, the small beam, the gusset plate, etc., which are not usually plasticized in the mechanism state, and are not designed to be plasticized are generally used for the column beam joint material by bolt joining. By using the structural steel material of the present invention, it is possible to reduce the cost of the entire steel structure.

また、本発明の請求項５に記載の鋼構造物は、請求項１から請求項４のいずれかに記載の構造用鋼材を骨組みの中の塑性化しない部位に用い、前記骨組み中の塑性化する可能性のある部位に対して溶接以外の接合方法（ボルト−ナット接合、リベット接合）によって接合したことを特徴とする。
このような構成によれば、前記した構造用鋼材によって得られる効果と同様の効果、すなわち建設コストの低減や施工作業の効率化を図ることができる。 Moreover, the steel structure of Claim 5 of this invention uses the structural steel material in any one of Claims 1-4 for the site | part which does not plasticize in a frame, and plasticizes in the said frame It is characterized in that it is joined to a portion that is likely to be joined by a joining method other than welding (bolt-nut joining, rivet joining) .
According to such a structure, the effect similar to the effect acquired by the above-mentioned structural steel materials, ie, reduction of construction cost and efficiency of construction work can be aimed at.

以上のような本発明の構造用鋼材および鋼構造物によれば、製造コストを低減しかつ製造効率を高めることができる。   According to the structural steel material and steel structure of the present invention as described above, the manufacturing cost can be reduced and the manufacturing efficiency can be increased.

以下、本発明の各実施形態を図面に基づいて説明する。
なお、第２実施形態以降において、次の第１実施形態で説明する構成部材と同じ構成部材、および同様な機能を有する構成部材には、第１実施形態の構成部材と同じ符号を付し、それらの説明を省略または簡略化する。 Hereinafter, each embodiment of the present invention will be described with reference to the drawings.
In the second and subsequent embodiments, the same constituent members as those described in the first embodiment and the constituent members having the same functions are denoted by the same reference numerals as those in the first embodiment. Those descriptions are omitted or simplified.

〔第１実施形態〕
図１(Ａ)，(Ｂ)は、本発明の第１実施形態に係る構造用鋼材としての添え板１を示す側面図および断面図である。図２は、本実施形態の構造用鋼材を用いた骨組みＳを示す側面図である。図３は、本実施形態の構造用鋼材を用いた場合の作用を説明する側面図である。
図１〜図３において、添え板１は、鋼構造物である建物の柱Ｃおよび大梁Ｇからなる骨組みＳにおいて、大梁Ｇの梁端部部材Ｇ１と梁中央部材Ｇ２とをボルト−ナット接合によって接合する場合に、梁端部部材Ｇ１と梁中央部材Ｇ２とに跨って設けられて、各々の部材Ｇ１，Ｇ２にボルトＢとナットＮとで固定されるものである。この添え板１は、大梁Ｇの上下フランジの各々を接合する第１および第２の添え板１Ａ，１Ｂと、大梁Ｇのウェブを接合する第３の添え板１Ｃとから構成されている。 [First Embodiment]
1A and 1B are a side view and a cross-sectional view showing a splicing plate 1 as a structural steel material according to a first embodiment of the present invention. FIG. 2 is a side view showing a framework S using the structural steel material of the present embodiment. FIG. 3 is a side view for explaining the operation when the structural steel material of the present embodiment is used.
In FIG. 1 to FIG. 3, the splicing plate 1 is a steel frame structure C composed of a column C and a large beam G, and a beam end member G1 and a beam center member G2 of the large beam G are joined by bolt-nut connection. When joining, it is provided across the beam end member G1 and the beam center member G2, and is fixed to each member G1, G2 with a bolt B and a nut N. The splicing plate 1 includes first and second splicing plates 1A and 1B that join the upper and lower flanges of the large beam G, and a third splicing plate 1C that joins the web of the large beam G.

添え板１は、母材である大梁Ｇの鋼材よりも降伏強度および降伏比がともに高い鋼材から形成されている。すなわち、大梁Ｇは、一般構造用圧延鋼材（JISG3101）や溶接構造用圧延鋼材（JISG3106）等から形成され、降伏強度が２３５N/mm2 （あるいは３２５N/mm2 ）で降伏比が８０％程度以下に設定されているのに対して、添え板１は、降伏強度が６５０N/mm2 以上で降伏比が９０％以上に設定された高張力鋼から形成されている。
そして、添え板１は、大梁Ｇの塑性化領域よりもスパン中央寄りに設けられるようになっており、骨組みＳのメカニズム時において、添え板１が設けられた位置の大梁Ｇは、降伏せずに、この位置よりも柱Ｃ寄りの大梁Ｇが降伏するようになっている。これにより、添え板１は、骨組みＳのメカニズム時に降伏せず、弾性状態を維持することができるようになっている。 The splicing plate 1 is formed of a steel material having a higher yield strength and yield ratio than the steel material of the large beam G that is a base material. That is, girders G is formed from rolled steel for general structure (JISG3101) and welding structural rolled steel (JISG3106), etc., yield ratio in yield strength 235N / mm 2 (or 325N / mm 2) or less about 80% In contrast, the splicing plate 1 is made of high-tensile steel having a yield strength of 650 N / mm 2 or more and a yield ratio of 90% or more.
The splicing plate 1 is provided closer to the center of the span than the plasticized region of the large beam G, and the large beam G at the position where the splicing plate 1 is provided does not yield during the mechanism of the framework S. In addition, the large beam G closer to the column C than this position yields. Thereby, the splicing plate 1 does not yield at the time of the mechanism of the framework S, and can maintain an elastic state.

以上のような添え板１は、高張力鋼から形成されるとともに、降伏しない部位に設けられていることから、板厚（曲げ剛性）を小さく設定することができるため、図３に示すように、接合対象の母材である梁端部部材Ｇ１と梁中央部材Ｇ２との寸法が若干異なりって段差（はだすき）があったとしても、この段差に沿って添え板１Ａ，１Ｂが曲がりやすくできる。これにより、添え板１Ａ，１Ｂを曲げるための力としてボルトＢやナットＮの締め付け力が使われなくなり、締め付け力を添え板１Ａ，１Ｂと大梁Ｇとの摩擦接合の接合力として有効に作用させることができるようになって、接合性能を向上させることができる。ここで、母材に段差（はだすき）ができる原因としては、一方の母材がロール材で他方がビルト（組立）材のような場合や、両方の母材ともにビルト材である場合に、ビルト材の組立誤差によって部材寸法に差が生じてしまうことなどがある。   Since the splicing plate 1 as described above is formed of a high-strength steel and is provided at a portion that does not yield, the plate thickness (bending rigidity) can be set small, as shown in FIG. Even if the beam end member G1 and the beam center member G2, which are base materials to be joined, are slightly different in size and have a step (protrusion), the attachment plates 1A and 1B bend along the step. Easy to do. As a result, the tightening force of the bolts B and nuts N is not used as a force for bending the splicing plates 1A and 1B, and the tightening force is effectively applied as a joining force for frictional joining between the splicing plates 1A and 1B and the large beam G. As a result, the bonding performance can be improved. Here, the reason why the base material has a level difference is when one base material is a roll material and the other is a built material, or when both base materials are built materials. In some cases, differences in member dimensions may occur due to assembly errors of the building material.

このような本実施形態によれば、以下のような効果がある。
（１）すなわち、骨組みＳのメカニズム時において降伏しない部位に添え板１が用いられているので、添え板１を形成する鋼材に関して降伏後の変形性能が不要になり、添加する化学成分を省略するか減らすことができる。これにより、原料コストが削減できるとともに製鉄工程が簡単化でき、製造コストを低減することができる。さらに、添え板１の降伏比が９０％以上に設定されているので、熱処理の工程を簡単化する（空冷、つまり自然に冷えるのを待つ）ことができて高効率で製造することができる。 According to this embodiment, there are the following effects.
(1) That is, since the splicing plate 1 is used in a portion that does not yield at the time of the mechanism of the framework S, the deformation performance after the yielding of the steel material forming the splicing plate 1 becomes unnecessary, and the chemical components to be added are omitted. Or can be reduced. Thereby, the raw material cost can be reduced, the iron making process can be simplified, and the manufacturing cost can be reduced. Furthermore, since the yield ratio of the splicing plate 1 is set to 90% or more, the heat treatment process can be simplified (air cooling, that is, waiting for natural cooling), and production can be performed with high efficiency.

（２）また、添え板１が高張力鋼から形成されているので、より確実に降伏しないようにできるとともに、板厚を小さくすることができることから、総鋼材量を減らして低コスト化を促進させることができるとともに、運搬や建て方の作業効率も向上させることができる。 (2) Since the splicing plate 1 is made of high-strength steel, it can be more reliably prevented from yielding, and the plate thickness can be reduced, thereby reducing the total steel amount and promoting cost reduction. In addition, the work efficiency of transportation and building can be improved.

（３）また、添え板１がボルトＢおよびナットＮによって接合されているので、添え板１の鋼材における溶接性に関しても高い性能が必要なくなり、さらに添加する化学成分を省略するか減らすことができ、製造コストを一層低減させることができる。 (3) Moreover, since the splicing plate 1 is joined by the bolt B and the nut N, high performance is not required with respect to the weldability in the steel material of the splicing plate 1, and further, chemical components to be added can be omitted or reduced. The manufacturing cost can be further reduced.

（４）さらに、添え板１の板厚が小さくできて母材のはだすきに対する追従性が向上されているので、フィラープレート等を用いなくても接合性能を確保することができる。 (4) Further, since the thickness of the support plate 1 can be reduced and the followability of the base material to the extruding is improved, the joining performance can be ensured without using a filler plate or the like.

〔第２実施形態〕
次に、本発明の第２実施形態について、図４に基づいて説明する。
図４(Ａ)，(Ｂ)は、本発明の第２実施形態に係る構造用鋼材としての柱梁接合材２を示す平面図および側面図である。
図４において、柱梁接合材２は、柱Ｃおよび大梁Ｇからなる骨組みＳにおいて、大梁Ｇの端部を柱Ｃにボルト−ナット接合によって接合する部材であって、大梁Ｇおよび柱Ｃの各々にボルトＢとナットＮとで固定されるものである。この柱梁接合材２は、大梁Ｇの上下フランジの各々を柱Ｃのフランジに接合する断面略Ｔ字形の第１の柱梁接合材２Ａと、大梁Ｇのウェブを柱Ｃのフランジに接合する断面略Ｌ字形の第２の柱梁接合材２Ｂとから構成されている。 [Second Embodiment]
Next, a second embodiment of the present invention will be described based on FIG.
4A and 4B are a plan view and a side view showing a column beam joining material 2 as a structural steel material according to a second embodiment of the present invention.
In FIG. 4, a column beam joint material 2 is a member that joins an end portion of a large beam G to a column C by bolt-nut bonding in a framework S composed of a column C and a large beam G. Are fixed with bolts B and nuts N. This column beam joint material 2 joins the first column beam joint material 2A having a substantially T-shaped section for joining each of the upper and lower flanges of the large beam G to the flange of the column C, and the web of the large beam G to the flange of the column C. It is comprised from the 2nd column beam joining material 2B of a cross-section substantially L shape.

柱梁接合材２は、前記第１実施形態の添え板１と同様に、母材である柱Ｃおよび大梁Ｇの鋼材よりも降伏強度および降伏比がともに高い鋼材、すなわち降伏強度が６５０N/mm2 以上で降伏比が９０％以上に設定された高張力鋼から形成されている。
そして、骨組みＳのメカニズム時において、大梁Ｇは、柱梁接合材２よりもスパン中央寄りの位置（図４中、右側）で降伏するようになっており、柱梁接合材２は、骨組みＳのメカニズム時に降伏せず、弾性状態を維持することができるようになっている。
このような本実施形態によれば、前記（１）〜（３）と略同様の効果を奏することができる。 The beam-to-column joining material 2 is a steel material having a higher yield strength and yield ratio than the steel materials of the base column C and the large beam G, that is, a yield strength of 650 N / mm, as with the splicing plate 1 of the first embodiment. It is formed from a high-strength steel having a yield ratio of 90% or more at 2 or more.
At the time of the mechanism of the framework S, the girder G yields at a position closer to the center of the span than the column beam joint material 2 (right side in FIG. 4). It is possible to maintain an elastic state without yielding at the time of the mechanism.
According to the present embodiment as described above, substantially the same effects as the above (1) to (3) can be obtained.

なお、本発明は、前記各実施形態に限定されるものではなく、本発明の目的を達成できる他の構成等を含み、以下に示すような変形等も本発明に含まれる。
例えば、前記各実施形態においては、構造用鋼材の適用部位として、大梁Ｇの接合に用いる添え板１、および柱Ｃと大梁Ｇとの接合に用いる柱梁接合材２について説明したが、本発明の構造用鋼材は、骨組みＳのメカニズム時に塑性化しない部位であればどのような部位にでも用いることができる。メカニズム時に塑性化しない部位としては、例えば、骨組み中の梁中央材（図２の梁中央部材Ｇ２）や、小梁、ガセットプレート等が例示できる。
また、鋼構造物としては、建築分野の建物に限らず、土木分野の橋梁であってもよく、鋼材を用いて構築される構造物であれば任意の構造物が適用可能である。 Note that the present invention is not limited to the above-described embodiments, and includes other configurations that can achieve the object of the present invention, and includes the following modifications and the like.
For example, in each of the embodiments described above, the application plate of the structural steel material has been described with respect to the splicing plate 1 used for joining the large beam G and the column beam joining material 2 used for joining the column C and the large beam G. This structural steel material can be used in any part as long as it is not plasticized during the mechanism of the framework S. Examples of the portion that is not plasticized during the mechanism include a beam center material (beam center member G2 in FIG. 2), a small beam, and a gusset plate in the framework.
The steel structure is not limited to a building in the construction field, and may be a bridge in the civil engineering field. Any structure can be applied as long as it is a structure constructed using steel.

その他、本発明を実施するための最良の構成、方法などは、以上の記載で開示されているが、本発明は、これに限定されるものではない。すなわち、本発明は、主に特定の実施形態に関して特に図示され、かつ説明されているが、本発明の技術的思想および目的の範囲から逸脱することなく、以上述べた実施形態に対し、形状、材質、数量、その他の詳細な構成において、当業者が様々な変形を加えることができるものである。
従って、上記に開示した形状、材質などを限定した記載は、本発明の理解を容易にするために例示的に記載したものであり、本発明を限定するものではないから、それらの形状、材質などの限定の一部もしくは全部の限定を外した部材の名称での記載は、本発明に含まれるものである。 In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

(Ａ)，(Ｂ)は、本発明の第１実施形態に係る構造用鋼材を示す側面図および断面図である。(A), (B) is the side view and sectional drawing which show the structural steel materials which concern on 1st Embodiment of this invention. 前記構造用鋼材を用いた骨組みを示す側面図である。It is a side view which shows the framework using the said structural steel materials. 前記構造用鋼材を用いた場合の作用を説明する側面図である。It is a side view explaining the effect | action at the time of using the said structural steel material. (Ａ)，(Ｂ)は、本発明の第２実施形態に係る構造用鋼材を示す平面図および側面図である。(A), (B) is the top view and side view which show the structural steel materials which concern on 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１…添え板、２…柱梁接合材、Ｇ１…母材である梁端部部材、Ｇ２…母材である梁中央部材、Ｓ…骨組み。   DESCRIPTION OF SYMBOLS 1 ... Saddle plate, 2 ... Column beam joining material, G1 ... Beam end member which is a base material, G2 ... Beam center member which is a base material, S ... Frame.

Claims (5)

鋼構造物の骨組みを構成する構造用鋼材であって、
前記鋼構造物に作用する荷重によって塑性化しない部位に用いられ、前記骨組み中の塑性化する可能性のある部位に用いる鋼材に対して２倍程度以上の降伏強度を有した高張力鋼であり、前記塑性化する可能性のある部位に対して溶接以外の接合方法（ボルト−ナット接合、リベット接合）によって接合可能に構成されていることを特徴とする構造用鋼材。 A structural steel material constituting the framework of a steel structure,
It is a high strength steel that has a yield strength that is about twice as high as that of steel used in parts that are not plasticized by the load acting on the steel structure and that may be plasticized in the framework . the bonding method other than welding against sites that might said plasticized (bolt - nut joint, rivet connection) structural steel, characterized that you have been joined can be constituted by. 請求項１に記載の構造用鋼材において、
当該構造用鋼材の降伏比が９０％以上であることを特徴とする構造用鋼材。 In the structural steel material according to claim 1,
A structural steel material characterized in that a yield ratio of the structural steel material is 90% or more. 請求項１または請求項２に記載の構造用鋼材において、
前記骨組み中のボルト接合部において母材同士を接合する添え板に用いられることを特徴とする構造用鋼材。 In the structural steel material according to claim 1 or 2,
A structural steel material that is used as an attachment plate that joins base materials to each other at a bolt joint portion in the frame. 請求項１または請求項２に記載の構造用鋼材において、
前記骨組み中の梁中央材、小梁、ガセットプレート、およびボルト接合による柱梁接合材のうちの少なくともいずれかに用いられることを特徴とする構造用鋼材。 In the structural steel material according to claim 1 or 2,
A structural steel material that is used for at least one of a beam center member, a small beam, a gusset plate, and a column beam joint material by bolt joining in the frame. 請求項１から請求項４のいずれかに記載の構造用鋼材を骨組みの中の塑性化しない部位に用い、前記骨組み中の塑性化する可能性のある部位に対して溶接以外の接合方法（ボルト−ナット接合、リベット接合）によって接合したことを特徴とする鋼構造物。 A structural steel material according to any one of claims 1 to 4 is used for a portion in a framework that is not plasticized, and a joining method (bolt) other than welding to a portion that may be plasticized in the framework. -Steel structure characterized by being joined by nut joining, rivet joining) .
JP2005365044A 2005-12-19 2005-12-19 Structural steel and steel structures Expired - Fee Related JP4457234B2 (en)

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