JP5439234B2 - Steel type indication method for deformed bar, deformed bar and shear reinforcement - Google Patents
Steel type indication method for deformed bar, deformed bar and shear reinforcement Download PDFInfo
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Description
本発明は、異形棒鋼の鋼種を表示する方法及びこの方法を適用した異形棒鋼、並びにこの異形棒鋼を用いた剪断補強筋に関する。 The present invention relates to a method for displaying a steel type of a deformed bar, a deformed bar to which the method is applied, and a shear reinforcement using the deformed bar.
建築現場では、配筋場所に応じて径や鋼種（降伏点等の機械的性質）が異なる異形棒鋼が用いられる。特に鋼種については棒鋼を見ても識別できないので、棒鋼の誤配筋を無くすために、鋼種識別マークを鋼棒に付すことがＪＩＳ規格により義務付けられている。具体的には、棒鋼の一方の端面に鋼種毎に異なる色の塗料を塗るか、圧延ロールにより棒鋼の周面に軸線方向に等間隔をおいて鋼種毎に異なる凹又は凸のマークを刻印する。 In construction sites, deformed steel bars having different diameters and steel types (mechanical properties such as yield points) are used depending on the bar arrangement location. In particular, since the steel type cannot be identified by looking at the steel bar, the JIS standard requires that a steel type identification mark be attached to the steel bar in order to eliminate misalignment of the steel bar. Specifically, paint of a different color for each steel type is applied to one end surface of the steel bar, or concave or convex marks different for each steel type are engraved on the peripheral surface of the steel bar at equal intervals in the axial direction by a rolling roll. .
上述のようにＪＩＳ規格では鋼種識別マークを付することが義務付けられており、これに対応して特許文献１では、圧延ロールにより棒鋼の周面に鋼種識別用のマークを刻印している。特許文献２では、圧延ロールにより棒鋼の周面に鋼種識別マークと径識別マークを刻印している。特許文献３では、鋼種および径を識別する英数字等の記号をインクジェットにより表示している。 As described above, it is obliged to attach a steel type identification mark in the JIS standard, and in response to this, in Patent Document 1, a steel type identification mark is imprinted on the peripheral surface of the steel bar by a rolling roll. In Patent Document 2, a steel type identification mark and a diameter identification mark are imprinted on the peripheral surface of a steel bar by a rolling roll. In Patent Document 3, symbols such as alphanumeric characters for identifying the steel type and diameter are displayed by inkjet.
しかしながら、特許文献１，２に記載されているような圧延ロールにより刻印された鋼種識別マークは、棒鋼の周面の限られた領域において比較的長い間隔毎に形成されているため、施工者が確認に手間取ることがある。
また、特許文献３に記載されている表示方法では、インクジェット印字のためのコスト高となってしまう。
However, since the steel type identification marks engraved by the rolling rolls described in Patent Documents 1 and 2 are formed at relatively long intervals in the limited region of the peripheral surface of the steel bar, It may take time to confirm.
Further, the display method described in Patent Document 3 increases the cost for inkjet printing.
本発明は、上記課題を解決するためになされてものであり、軸線方向に延びるとともに互いに１８０°離れた一対の縦節と、これら縦節間の２つの領域において周方向に延びるとともに軸線方向に等間隔をおいて形成された多数の横節と、を有する異形棒鋼の鋼種を表示する方法であって、上記横節の上記軸線に対する角度及び／又は形状を、異形棒鋼の鋼種に対応して異ならせ、これにより鋼種を表示することを特徴とする。
この方法によれば、異形棒鋼の横節の角度及び／又は形状により、その鋼種を一瞥して明瞭に識別することができる。
The present invention has been made in order to solve the above-mentioned problems, and a pair of longitudinal nodes extending in the axial direction and spaced apart from each other by 180 °, and extending in the circumferential direction in two regions between the longitudinal nodes and in the axial direction. A method of displaying a steel grade of a deformed steel bar having a number of transverse nodes formed at equal intervals, wherein the angle and / or shape of the transverse bar with respect to the axis line corresponds to the steel grade of the deformed steel bar It is characterized in that the steel grade is displayed by this.
According to this method, the steel types can be clearly identified at a glance according to the angle and / or shape of the cross section of the deformed steel bar.
好ましくは、上記横節は、降伏点が比較的低い鋼種の異形棒鋼の場合には上記軸線と直交させ、降伏点が比較的高い鋼種の異形棒鋼の場合には上記軸線に対して傾斜させる。
このように横節を傾斜させると、降伏点が比較的高い異形棒鋼を折り曲げても破断等の損傷が生じにくい。
Preferably, the transverse section is perpendicular to the axis in the case of a deformed steel bar having a relatively low yield point, and is inclined with respect to the axis in the case of a deformed steel bar having a relatively high yield point.
If the transverse nodes are inclined in this way, damage such as breakage is unlikely to occur even when a deformed steel bar having a relatively high yield point is bent.
好ましくは、上記傾斜した横節が複数の鋼種を表す場合において、これら複数の鋼種のうち降伏点が高い鋼種を表す横節の断面積をその延び方向両端に向かって徐々に減少させ、上記複数の鋼種のうちの降伏点が低い鋼種を表す横節の断面積より小さくする
上記のように横節の横断面を小さくすると、降伏点が高い異形棒鋼を折り曲げても破断等の損傷が生じにくい。
Preferably, in the case where the inclined transverse node represents a plurality of steel types, the cross-sectional area of the transverse node representing a steel type having a high yield point among the plurality of steel types is gradually decreased toward both ends in the extending direction, Of the above steel grades, the cross-sectional area of the cross section representing a steel grade with a low yield point is made smaller. .
本発明の他の態様では、軸線方向に延びるとともに互いに１８０°離れた一対の縦節と、これら縦節間の２つの領域において周方向に延びるとともに軸線方向に等間隔をおいて形成された多数の横節と、を有する異形棒鋼において、上記横節は、上記軸線に対する角度及び／又は形状が異形棒鋼の鋼種に対応して異なり、これにより鋼種を表示することを特徴とする。 In another aspect of the present invention, a pair of longitudinal nodes extending in the axial direction and spaced apart from each other by 180 °, and a plurality of the longitudinal nodes extending in the circumferential direction and equally spaced in the axial direction in two regions between the longitudinal nodes. In the deformed steel bar, the angle and / or shape with respect to the axis is different corresponding to the steel type of the deformed steel bar, and the steel type is thereby displayed.
好ましくは、さらに、周面の少なくとも１箇所に、径毎に異なる色を呈する径識別マークが付されている。これによれば、異形棒鋼の径を径識別マークにより明瞭に識別することができる。
さらに他の態様では、上記異形棒鋼により構成された剪断補強筋において、少なくとも１箇所に径毎に異なる色を呈する径識別マークが付されている。これによれば、剪断補強筋を構成する異形棒鋼の径を、径識別マークにより明瞭に識別することができる。
Preferably, at least one place on the peripheral surface is provided with a diameter identification mark that exhibits a different color for each diameter. According to this, the diameter of the deformed steel bar can be clearly identified by the diameter identification mark.
In still another aspect, in the shear reinforcing bar composed of the deformed steel bar, at least one spot is provided with a diameter identification mark that exhibits a different color for each diameter. According to this, the diameter of the deformed steel bar constituting the shear reinforcement can be clearly identified by the diameter identification mark.
本発明によれば、異形棒鋼の鋼種を一瞥して明瞭に識別することができる。 According to the present invention, the steel types of deformed steel bars can be identified at a glance.
以下、本発明の一実施形態について図面を参照しながら説明する。図１は柱や梁等に用いられる剪断補強筋１を示す。この剪断補強筋１は、異形棒鋼１０を矩形の環状に折り曲げ加工しその両端を溶接することにより得られる。なお、異形棒鋼１０は通常の異形棒鋼と同様に圧延ローラによる圧延で製造される。
本実施形態ではこの異形棒鋼１０として、配筋場所に応じて図２〜図４に示す異形棒鋼１０ａ〜１０ｃ（異形棒鋼群）が用いられている。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a shear reinforcement 1 used for columns, beams and the like. The shear reinforcing bar 1 is obtained by bending a deformed steel bar 10 into a rectangular ring shape and welding both ends thereof. The deformed steel bar 10 is manufactured by rolling with a rolling roller in the same manner as a normal deformed steel bar.
In the present embodiment, as the deformed steel bar 10, deformed steel bars 10a to 10c (deformed bar steel group) shown in FIGS.
まず、異形棒鋼１０ａ〜１０ｃの共通構成について説明する。
図２に示す異形棒鋼１０ａは、その周面に突出形成されるとともに軸線方向に延びる一対の縦節１１ａと、これら縦節１１ａ間の２つの周面領域において突出形成されるとともに周方向に延びる多数の横節１２ａとを有している。一対の縦節１１ａは異形棒鋼１０ａの周方向に１８０°離れて配置されている。多数の横節１２ａは、軸線方向に等間隔をなして配置されている。
First, the common configuration of the deformed steel bars 10a to 10c will be described.
The deformed steel bar 10a shown in FIG. 2 is formed so as to protrude on the peripheral surface and extend in the axial direction, and is formed to protrude in two peripheral surface regions between the vertical nodes 11a and extend in the circumferential direction. It has a large number of transverse nodes 12a. The pair of longitudinal nodes 11a are arranged 180 degrees apart in the circumferential direction of the deformed steel bar 10a. A large number of transverse nodes 12a are arranged at equal intervals in the axial direction.
図３、図４に示す異形棒鋼１０ｂ、１０ｃも上記異形棒鋼１０ａと同様に、縦節１１ｂ，１１ｃと横節１２ｂ、１２ｃを有している。
異形棒鋼１０ａ〜１０ｃの縦節１１ａ〜１１ｃは略同じ断面形状をなしている。
The deformed steel bars 10b and 10c shown in FIGS. 3 and 4 also have longitudinal nodes 11b and 11c and transverse nodes 12b and 12c, similarly to the deformed steel bar 10a.
The longitudinal nodes 11a to 11c of the deformed steel bars 10a to 10c have substantially the same cross-sectional shape.
次に、本発明の特徴部をなす上記異形棒鋼１０ａ〜１０ｃの相違点について説明する。これら異形棒鋼１０ａ〜１０ｃは、鋼種と横節１２ａ〜１２ｃの角度，形状が異なる。 Next, the differences between the above-described deformed steel bars 10a to 10c, which form the characteristic part of the present invention, will be described. These deformed steel bars 10a to 10c are different in the angle and shape of the steel type and the transverse nodes 12a to 12c.
上記異形棒鋼１０ａは降伏点が低いＳＤ２９５〜ＳＤ３９０からなり、その横節１２ａは、図２に示すように異形棒鋼１０ａの軸線と直交し（この軸線と直交する方向から異形棒鋼１０ａを見た場合）、その両端が上記縦節１１ａに連なっている。横節１２ａはその延び方向に沿って同一の断面形状（例えば台形）を有し比較的幅広をなしている。 The deformed steel bar 10a is composed of SD295 to SD390 having a low yield point, and the transverse node 12a is orthogonal to the axis of the deformed steel bar 10a as shown in FIG. 2 (when the deformed steel bar 10a is viewed from the direction orthogonal to the axis). ), And both ends thereof are connected to the longitudinal node 11a. The transverse node 12a has the same cross-sectional shape (for example, trapezoid) along its extending direction and is relatively wide.
上記異形棒鋼１０ｂは降伏点が中程度のＳＤ４９０からなり、その横節１２ｂは、図３に示すように異形棒鋼１０ｂの軸線に対して傾斜し、その両端が上記縦節１１ｂに連なっている。横節１２ｂはその延び方向に沿って同一の断面形状（例えば台形）を有し比較的幅広をなしている。 The deformed steel bar 10b is made of SD490 having a medium yield point, and its transverse node 12b is inclined with respect to the axis of the deformed steel bar 10b as shown in FIG. 3, and both ends thereof are connected to the longitudinal node 11b. The horizontal node 12b has the same cross-sectional shape (for example, trapezoid) along its extending direction and is relatively wide.
上記異形棒鋼１０ｃは降伏点が高いＳＰＲ７８５からなり、その横節１２ｃは、図４に示すように異形棒鋼１０ｃの軸線に対して傾斜している。この傾斜角度は上記異形棒鋼１０ｃとほぼ同じでもよいし、異なっていてもよい。横節１２ｃは、その延び方向の中央部で幅および高さが最大（例えば異形棒鋼１０ｂの横節１２ｂと同程度）であり、両端に向かって（縦節１１ｃに向かって）、幅および高さが徐々に小さくなり、縦節１１ｃと連ならない。換言すれば、この横節１２ｃの断面積は両端に向かって小さくなり、その平均断面積は異形棒鋼１０ｂの横節１２ｂより小さい。 The deformed steel bar 10c is made of SPR785 having a high yield point, and the transverse node 12c is inclined with respect to the axis of the deformed steel bar 10c as shown in FIG. The inclination angle may be substantially the same as or different from that of the deformed steel bar 10c. The horizontal node 12c has the maximum width and height (for example, the same level as the horizontal node 12b of the deformed steel bar 10b) at the center in the extending direction, and the width and height toward both ends (toward the vertical node 11c). Will gradually become smaller and will not be connected to the longitudinal section 11c. In other words, the cross-sectional area of the horizontal node 12c decreases toward both ends, and the average cross-sectional area is smaller than the horizontal node 12b of the deformed steel bar 10b.
さらに、上記剪断補強筋１には、径識別マーク５が棒鋼１０の径に対応した色を呈する塗料を塗ることにより形成されている。 Further, on the shear reinforcement 1, the diameter identification mark 5 is formed by applying a paint having a color corresponding to the diameter of the steel bar 10.
径識別マーク５に用いられる色群を例示すると下記の通りである。Ｄ１０（径１０ｍｍ、以下同じ），Ｄ２５，Ｄ３８は「赤」、Ｄ１６，Ｄ２９，Ｄ４１は「黄」、Ｄ１９，Ｄ３２，Ｄ５１は「緑」、Ｄ２２，Ｄ３５は「青」である。
なお、複数の径で同一の色を用いているが、これら径は大きく異なるので、誤って識別することはない。
Examples of the color group used for the diameter identification mark 5 are as follows. D10 (diameter 10 mm, the same applies hereinafter), D25 and D38 are “red”, D16, D29 and D41 are “yellow”, D19, D32 and D51 are “green”, and D22 and D35 are “blue”.
Although the same color is used for a plurality of diameters, these diameters are greatly different, so that they are not mistakenly identified.
上述したように、棒鋼１０ ａ〜１０ｃの横節１２ａ〜１２ｃの異形棒鋼１０ａ〜１０ｃの軸線に対する傾き、形状を異ならせることにより、異形棒鋼１０ａ〜１０ｃの鋼種を表示でき、その結果、施工者が建築現場において鋼種を容易かつ明瞭に識別でき、誤配筋を防止することができる。
また、径識別マーク５の色を用いて異形棒鋼１０ａ〜１０ｃの径を表示したので、径の識別をも明瞭に行うことができ、誤配筋を防止することができる。
As described above, the steel bars of the deformed bars 10a to 10c can be displayed by varying the inclination and the shape of the horizontal bars 12a to 12c of the bars 10a to 10c with respect to the axis of the deformed bars 10a to 10c. However, it is possible to easily and clearly identify the steel type at the construction site and prevent misplacement.
Further, since the diameters of the deformed steel bars 10a to 10c are displayed using the color of the diameter identification mark 5, the diameter can be clearly identified, and misplacement can be prevented.
なお、異形棒鋼１０ｂ、１０ｃは異形棒鋼１０ａに較べて降伏点が高く、剪断補強筋１を形成するために折り曲げる際に破断しやすい傾向にあるが、横節１２ｂ，１２ｃが傾斜しているので折損を回避できる。また、異形棒鋼１０ｃは異形棒鋼１０ｂに較べて降伏点が高く、剪断補強筋１を形成するために折り曲げる際に破断しやすい傾向にあるが、横節１２ｃの断面積が小さいので、折損を回避できる。 The deformed steel bars 10b and 10c have a higher yield point than the deformed steel bars 10a and tend to break when bent to form the shear reinforcement 1, but the horizontal nodes 12b and 12c are inclined. Breakage can be avoided. The deformed steel bar 10c has a higher yield point than the deformed steel bar 10b and tends to break when bent to form the shear reinforcing bar 1, but avoids breakage because the cross-sectional area of the transverse bar 12c is small. it can.
本発明は、上記実施例に制約されず、種々の態様を採用することができる。
異形棒鋼の鋼種を、横節の角度の相違だけで識別してもよいし、横節の形状の相違だけで識別してもよい。
本発明を剪断補強筋の他に、直線状をなす異形棒鋼や種々の形状に加工された異形棒鋼に適用してもよい。
The present invention is not limited to the above-described embodiments, and various aspects can be adopted.
The steel type of the deformed steel bar may be identified only by the difference in the angle of the transverse node, or may be identified only by the difference in the shape of the transverse node.
In addition to the shear reinforcement, the present invention may be applied to a deformed steel bar having a linear shape or a deformed steel bar processed into various shapes.
本発明は、建築等に使用される異形棒鋼の鋼種を識別するために適用することができる。 The present invention can be applied to identify the steel type of a deformed steel bar used for construction or the like.
１ 剪断補強筋
５ 径識別マーク
１０，１０ａ〜１０ｃ 異形棒鋼
１１ａ〜１１ｃ 縦節
１２ａ〜１２ｃ 横節
DESCRIPTION OF SYMBOLS 1 Shear reinforcement 5 Diameter identification mark 10, 10a-10c Deformed bar steel 11a-11c Longitudinal node 12a-12c Horizontal node
Claims (6)
上記横節の上記軸線に対する角度及び／又は形状を、異形棒鋼の鋼種に対応して異ならせ、これにより鋼種を表示することを特徴とする異形棒鋼の鋼種表示方法。 A variant having a pair of longitudinal nodes extending in the axial direction and spaced apart from each other by 180 °, and a plurality of transverse nodes extending in the circumferential direction and formed at equal intervals in the axial direction in two regions between the longitudinal nodes A method for displaying the steel grade of a steel bar,
A method of displaying a steel type of a deformed steel bar, wherein the angle and / or shape of the transverse node with respect to the axis line is changed in accordance with the steel type of the steel bar of a deformed steel bar.
上記横節は、上記軸線に対する角度及び／又は形状が異形棒鋼の鋼種に対応して異なり、これにより鋼種を表示することを特徴とする異形棒鋼。 A variant having a pair of longitudinal nodes extending in the axial direction and spaced apart from each other by 180 °, and a plurality of transverse nodes extending in the circumferential direction and formed at equal intervals in the axial direction in two regions between the longitudinal nodes In steel bars,
The horizontal bar has a different shape and / or shape with respect to the axis corresponding to the steel type of the deformed steel bar, thereby displaying the steel type.
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| JP2010055266A JP5439234B2 (en) | 2010-03-12 | 2010-03-12 | Steel type indication method for deformed bar, deformed bar and shear reinforcement |
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