JP2949592B2 - Non-magnetic stranded wire for prestressed concrete - Google Patents
Non-magnetic stranded wire for prestressed concreteInfo
- Publication number
- JP2949592B2 JP2949592B2 JP2064040A JP6404090A JP2949592B2 JP 2949592 B2 JP2949592 B2 JP 2949592B2 JP 2064040 A JP2064040 A JP 2064040A JP 6404090 A JP6404090 A JP 6404090A JP 2949592 B2 JP2949592 B2 JP 2949592B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- steel
- wires
- paramagnetic
- wire
- 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.)
- Expired - Fee Related
Links
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2036—Strands characterised by the use of different wires or filaments
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2041—Strands characterised by the materials used
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2015—Construction industries
- D07B2501/2023—Concrete enforcements
Landscapes
- Ropes Or Cables (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Reinforcement Elements For Buildings (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はプレストレストコンクリートの製造に使用さ
れる撚合体とりわけ非磁性特性を備え、磁性浮上式リニ
アモータカー軌道部材や核融合装置の構造部材などに好
適な非磁性撚合線条体に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a twisted body used in the production of prestressed concrete, especially a magnetically levitated linear motor car track member or a structural member of a nuclear fusion device having a non-magnetic property. The present invention relates to a suitable non-magnetic stranded wire.
プレストレストコンクリート製品は、コンクリート内
部に埋め込んだ高張力線条体の働きで大きな外力に耐え
られるため、鉄道のまくら木、橋桁、スラブ、矢板など
に汎用されている。Prestressed concrete products are used for railway sleepers, bridge girders, slabs, sheet piles, etc. because they can withstand large external forces by the action of high-tensile filaments embedded in concrete.
この高張力線条体は、従来では一般に、化学成分が常
磁性鋼からなる高張力鋼からなる鋼線または撚り鋼線が
用いられていた。しかしこの高張力線条体を磁気浮上式
リニアモータカー軌道部材や核融合装置の構造部材など
のためのプレストレストコンクリートに用いた場合、高
張力線条体は強磁場内に置かれることになり、系のエネ
ルギーロスを避けられない。Conventionally, as the high-strength filament, a steel wire or a stranded steel wire made of high-strength steel whose chemical composition is paramagnetic steel has been used. However, when this high-tensile filament is used for prestressed concrete for a magnetically levitated linear motor car track member or a structural member of a fusion device, the high-tensile filament is placed in a strong magnetic field. Energy loss is inevitable.
この対策としては、Ni−Cr系オーステナイトステンレ
ス鋼や高Mn系オーステナイト鋼の如く化学的成分が非磁
性鋼の鋼線または素線を複数本撚りあわせたものを用い
ることが考えられるが、かかる非磁性鋼線条体の透磁率
は、1000エルステッドの磁場において1.002〜1.004の値
を示し、実際に要求される非磁性特性に対しては過剰特
性となる。しかも、非磁性鋼は磁性鋼に比較して高価で
あるためプレストレストコンクリートの価格が高くな
り、さらに、非磁性鋼は材質的に硬いため撚合しにく
く、コンパクトで安定した断面形状の撚り鋼線としにく
いという問題があった。また、他の方法として、高張力
線条体を炭素繊維や芳香族ポリアミド繊維と熱硬化性樹
脂との複合体で構成することも考えられるが、製造コス
トが非常に高い点、緊張力を与えるために不可欠な端末
処理が困難である点などに問題があった。As a countermeasure for this, it is conceivable to use a steel wire or strand of a non-magnetic steel whose chemical composition is non-magnetic steel, such as Ni-Cr austenitic stainless steel or high Mn austenitic steel. The magnetic permeability of the magnetic steel wire rod shows a value of 1.002 to 1.004 at a magnetic field of 1000 Oersteds, which is excessive for the actually required nonmagnetic properties. In addition, non-magnetic steel is more expensive than magnetic steel, so the price of prestressed concrete is higher. In addition, non-magnetic steel is harder to twist because of its material hardness, and is a twisted steel wire with a compact and stable cross-sectional shape. There was a problem that it was difficult to do. Further, as another method, it is conceivable that the high-tensile filaments are composed of a composite of a carbon fiber or an aromatic polyamide fiber and a thermosetting resin, but the production cost is extremely high, and a tension is applied. Therefore, there is a problem in that the terminal processing which is indispensable is difficult.
本発明は前記のような問題点を解消するために創案さ
れたもので、その目的とするところは、実際に要求され
る非磁性特性水準に合った断面形状のコンパクトなプレ
ストレストコンクリート用非磁性撚合線条体を提供する
ことにある。The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a compact non-magnetic twist for prestressed concrete having a cross-sectional shape suitable for the actually required non-magnetic property level. To provide a joint striated body.
上記目的を達成するため本発明は、非磁性鋼からなる
素線と常磁性鋼からなる素線の２種の素線を撚合したも
のである。In order to achieve the above-mentioned object, the present invention is obtained by twisting two kinds of wires, a wire made of nonmagnetic steel and a wire made of paramagnetic steel.
以下本発明を添付図面に基づいて説明する。 Hereinafter, the present invention will be described with reference to the accompanying drawings.
第２図は使用状態を示しており、１は磁気浮上式リニ
アモータカー軌道用のスラブであり、圧縮応力をかけた
コンクリート２の中に引張り応力をかけた本発明による
非磁性撚合線条体３を埋め込んでなる。前記非磁性撚合
線条体３は鋼ストランドからなっている。FIG. 2 shows a use state, in which 1 is a slab for a magnetically levitated linear motor car track, and a non-magnetic stranded wire according to the present invention in which a tensile stress is applied to concrete 2 which is subjected to compressive stress. 3 is embedded. The non-magnetic stranded wire 3 is made of a steel strand.
第１図（ａ）（ｂ）は１×７構造の鋼ストランドを例
示している。第１図（ａ）は、化学成分が常磁性鋼から
なる４本の素線30a,30b,30c,30dと、化学成分が非磁性
鋼からなる３本の素線31a,31b,31cを組合せたもので、
１本の常磁性鋼素線30dは芯として中心に配され、その
周りに３本の常磁性鋼素線30a,30b,30cと非磁性鋼素線3
1a,31b,31cを交互に配し、所定のピッチで撚りあわせた
ものである。1 (a) and 1 (b) illustrate a steel strand having a 1 × 7 structure. FIG. 1 (a) shows a combination of four wires 30a, 30b, 30c, 30d whose chemical components are made of paramagnetic steel and three wires 31a, 31b, 31c whose chemical components are made of non-magnetic steel. That
One paramagnetic steel wire 30d is disposed at the center as a core, and three paramagnetic steel wires 30a, 30b, 30c and a non-magnetic steel wire 3
1a, 31b and 31c are alternately arranged and twisted at a predetermined pitch.
第１図（ｂ）は、化学成分が常磁性鋼からなる３本の
素線30a,30b,30cと、化学成分が非磁性鋼からなる４本
の素線31a,31b,31c,31dを組合せたもので、１本の非磁
性鋼素線31dは芯として中心に配され、その周りに３本
の常磁性鋼素線30a,30b,30cと非磁性鋼素線31a,31b,31c
を交互に配し、所定のピッチで撚りあわせたものであ
る。FIG. 1 (b) shows a combination of three wires 30a, 30b, 30c whose chemical components are made of paramagnetic steel and four wires 31a, 31b, 31c, 31d whose chemical components are made of non-magnetic steel. One non-magnetic steel wire 31d is disposed at the center as a core, and three paramagnetic steel wires 30a, 30b, 30c and non-magnetic steel wires 31a, 31b, 31c are provided therearound.
Are alternately arranged and twisted at a predetermined pitch.
第１図（ｃ）〜（ｆ）は１×19構造の鋼ストランドを
示しており、（ｃ）は常磁性鋼からなる４本の素線30a,
30b,30c,30dと非磁性鋼からなる15本の素線31a〜31oを
組合せたもので、４本の素線30a,30b,30c,30dは第１図
（ａ）に示す配置により心部を構成している。（ｄ）は
常磁性鋼からなる７本の素線30a〜30gで心部を構成し、
非磁性鋼からなる12本の素線31a〜31lで側を構成したも
のである。（ｅ）は常磁性鋼からなる10本の素線30a〜3
0jと９本の非磁性鋼からなる素線31a〜31iを組合せてお
り、常磁性鋼の７本の素線30a〜30gで心部を構成し、残
る３本の素線30h,30i,30jを側に等間隔で配している。
（ｆ）は11本の常磁性鋼からなる素線30a〜30kと８本の
非磁性鋼からなる素線31a〜31hを組合せている。1 (c) to 1 (f) show a steel strand having a 1 × 19 structure, and FIG. 1 (c) shows four strands 30a,
A combination of 30b, 30c, 30d and 15 wires 31a to 31o made of non-magnetic steel. The four wires 30a, 30b, 30c, 30d have the core shown in FIG. Is composed. (D) The core is composed of seven strands 30a to 30g of paramagnetic steel,
The side is constituted by twelve element wires 31a to 31l made of non-magnetic steel. (E) shows ten wires 30a to 3 made of paramagnetic steel.
0j and the wires 31a to 31i made of 9 non-magnetic steels are combined, and the core is composed of 7 wires 30a to 30g of paramagnetic steel, and the remaining 3 wires 30h, 30i, 30j Are arranged at equal intervals on the side.
(F) combines wires 30a to 30k made of 11 paramagnetic steels and wires 31a to 31h made of 8 non-magnetic steels.
なお、常磁性鋼素線と非磁性鋼素線の組合せ本数や配
列は上記例に限定されるものではない。また、素線径も
必ずしも２種の素線が同等あることは必要としない。In addition, the combination number and arrangement | sequence of a paramagnetic steel strand and a nonmagnetic steel strand are not limited to the said example. In addition, the wire diameter does not necessarily need to be the same for two types of wires.
本発明による非磁性撚合線条体３は、公知のこの種プ
レストレスト用撚合線条体と同様、プレテンション方
式、ポストテンション方式、ケミストレス方式で張力が
付与され、コンクリート２と一体化される。The non-magnetic stranded wire 3 according to the present invention is applied with tension by a pretension method, a post-tension method, or a chemical stress method, and is integrated with the concrete 2 similarly to the known stranded wire for prestressed. You.
本発明においては、常磁性鋼素線と非磁性鋼素線とを
組合せているため、得られたストランドの透磁率は常磁
性鋼の持つ透磁率と非磁性鋼の持つ透磁率の中間的特性
を示し、したがって適宜非磁性鋼素線の数を増減するこ
とにより、実用上必要とされる水準に即応した必要かつ
十分な非磁性を創成することができる。また、塑性変形
しやすい常磁性鋼素線を含みこれと非磁性鋼素線が撚り
合わされるためストランドの断面形状が不必要に拡開せ
ず、コンパクトでまとまりのよい形状とすることができ
る。In the present invention, since the paramagnetic steel wire and the nonmagnetic steel wire are combined, the permeability of the obtained strand is an intermediate property between the permeability of the paramagnetic steel and the permeability of the nonmagnetic steel. Therefore, by appropriately increasing or decreasing the number of non-magnetic steel wires, it is possible to create a necessary and sufficient non-magnetic material corresponding to a practically necessary level. In addition, since the non-magnetic steel wire is twisted together with the paramagnetic steel wire that is easily deformed plastically, the cross-sectional shape of the strand is not unnecessarily expanded, and the strand can be formed into a compact and coherent shape.
次に本発明の実施例を示す。 Next, examples of the present invention will be described.
下記の化学成分（重量％）からなる常磁性鋼素線と非
磁性鋼素線を使用した。Paramagnetic steel wires and non-magnetic steel wires consisting of the following chemical components (% by weight) were used.
常磁性鋼素線:C:0.6％、Si:0.3％、Mn:0.5％ 非磁性鋼素線:C:0.5％、Si:0.3％、Mn:18.0％、Ni:1.10
％、Cr:2.0％ 常磁性鋼素線の透磁率μ:15、非磁性鋼素線透磁率μ:
1.004である。Paramagnetic steel wire: C: 0.6%, Si: 0.3%, Mn: 0.5% Non-magnetic steel wire: C: 0.5%, Si: 0.3%, Mn: 18.0%, Ni: 1.10
%, Cr: 2.0% Permeability of paramagnetic steel wire μ: 15, Non-magnetic steel wire permeability μ:
1.004.
上記２種類の素線の径は心用が4.22mmで側が4.29mmで
あり、それらを撚線機で撚り合わせ、１×７、１×19の
PCストランドを得た。The diameters of the above two types of strands are 4.22 mm for the core and 4.29 mm on the side, and they are twisted with a twisting machine and 1 × 7, 1 × 19
Got a PC strand.
得られたPCストランドにおける非磁性鋼素線の本数と
透磁率の関係を示すと第３図と第４図のとおりである。
これら第３図と第４図から非磁性鋼素線の本数によりPC
ストランドの透磁率を制御できることがわかる。FIGS. 3 and 4 show the relationship between the number of non-magnetic steel wires and the magnetic permeability in the obtained PC strand.
From these Figures 3 and 4, the number of non-magnetic steel wires
It can be seen that the magnetic permeability of the strand can be controlled.
以上説明した本発明によるときには、非磁性鋼素線と
常磁性鋼素線の２種の素線を撚合したので、形状が良好
でかつ実際に要求される非透磁性に対して過不足のない
適正水準のプレストレストコンクリート用非磁性撚合線
条体を比較的安価に提供できるというすぐれた効果が得
られる。In the present invention described above, since two kinds of wires, a non-magnetic steel wire and a paramagnetic steel wire, are twisted, the shape is good and the amount of non-permeability required for the actually required non-magnetic permeability is sufficient. An excellent effect is obtained in that a non-magnetic stranded wire for prestressed concrete having an unsuitable level can be provided at relatively low cost.
第１図（ａ）〜（ｆ）は本発明によるプレストレストコ
ンクリート用非磁性撚合線条体の例を示す断面図、第２
図は本発明による非磁性撚合線条体を使用したプレスト
レストコンクリート製品の一例を示す断面図、第３図と
第４図は非磁性鋼線の本数とストランドの透磁率の関係
を示すグラフである。 ３……ストランド、30a,30b,30c,30d……常磁性鋼素
線、31a,31b,31c……非磁性鋼素線1 (a) to 1 (f) are sectional views showing an example of a non-magnetic stranded wire for prestressed concrete according to the present invention, FIG.
FIG. 1 is a cross-sectional view showing an example of a prestressed concrete product using a non-magnetic stranded wire according to the present invention. FIGS. 3 and 4 are graphs showing the relationship between the number of non-magnetic steel wires and the magnetic permeability of a strand. is there. 3. Strands, 30a, 30b, 30c, 30d ... paramagnetic steel strands, 31a, 31b, 31c ... non-magnetic steel strands
───────────────────────────────────────────────────── フロントページの続き (72)発明者 竹内 潤 茨城県新治郡出島村大字宍倉5707 東京 製鋼株式会社研究所内 (72)発明者 鬼満 哲 茨城県新治郡出島村大字宍倉5707 東京 製鋼株式会社研究所内 (56)参考文献 特開 昭53−23405（ＪＰ，Ａ) 特開 昭59−199954（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) B28B 23/02 - 23/04 D07B 1/06 E04C 5/02,5/08 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Jun Takeuchi 5707 Shishikura, Dejima-mura, Niigata-gun, Ibaraki Prefecture Inside Tokyo Steel Works Co., Ltd. In the laboratory (56) References JP-A-53-23405 (JP, A) JP-A-59-199954 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) B28B 23/02- 23/04 D07B 1/06 E04C 5 / 02,5 / 08
Claims (1)
を撚合したことを特徴とするプレストレストコンクリー
ト用非磁性撚合線条体。1. A non-magnetic stranded wire for prestressed concrete, wherein two types of non-magnetic steel wires and paramagnetic steel wires are stranded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2064040A JP2949592B2 (en) | 1990-03-16 | 1990-03-16 | Non-magnetic stranded wire for prestressed concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2064040A JP2949592B2 (en) | 1990-03-16 | 1990-03-16 | Non-magnetic stranded wire for prestressed concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03266607A JPH03266607A (en) | 1991-11-27 |
| JP2949592B2 true JP2949592B2 (en) | 1999-09-13 |
Family
ID=13246607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2064040A Expired - Fee Related JP2949592B2 (en) | 1990-03-16 | 1990-03-16 | Non-magnetic stranded wire for prestressed concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2949592B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4519245B2 (en) * | 2000-02-29 | 2010-08-04 | 太平洋セメント株式会社 | High-strength concrete members for high-speed traffic system structures |
| EP3647486A4 (en) * | 2017-06-30 | 2021-02-17 | Sumitomo Electric Industries, Ltd. | Stranded wire |
| CN109332546A (en) * | 2018-02-18 | 2019-02-15 | 兰州斯凯特路桥预应力技术开发有限公司 | A kind of novel steel strand wires production method |
| CN116536818B (en) * | 2023-05-23 | 2024-09-24 | 江苏兴达钢帘线股份有限公司 | Production method of layered structure steel cord |
-
1990
- 1990-03-16 JP JP2064040A patent/JP2949592B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03266607A (en) | 1991-11-27 |
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