JPS6199532A - Pc-steel composite stranded wire - Google Patents
Pc-steel composite stranded wireInfo
- Publication number
- JPS6199532A JPS6199532A JP22094684A JP22094684A JPS6199532A JP S6199532 A JPS6199532 A JP S6199532A JP 22094684 A JP22094684 A JP 22094684A JP 22094684 A JP22094684 A JP 22094684A JP S6199532 A JPS6199532 A JP S6199532A
- Authority
- JP
- Japan
- Prior art keywords
- stranded wire
- wire
- child
- wires
- outer layer
- 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
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Abstract
Description
【発明の詳細な説明】
(技術分野)
本発明は、プレストレストコンクリート(以下、PCと
称す)などに使用されるpca撚線において、複数本の
素線を撚合せた撚線(子撚線と称す)の複数本を、さら
に同心法して成る複合撚線(親博線と称す)亭関するも
のである。Detailed Description of the Invention (Technical Field) The present invention relates to a stranded wire (child stranded wire) in which a plurality of strands are twisted together in a PCA stranded wire used for prestressed concrete (hereinafter referred to as PC). This refers to a composite stranded wire (referred to as Oyahiro wire) made by concentrically arranging a plurality of wires (referred to as Oyahiro wire).
(背景技術)
pcam線としては、7本法や19本撚が現在一般に用
いられているが、さらに大荷重が必要な場合、7本撚線
の7本又は19本をさらに撚合せて、超大径ケーブルに
して用いる場合がある。(Background technology) Currently, 7-strand method and 19-strand twisted wire are commonly used as PCAM wires, but when an even larger load is required, 7 or 19 of the 7-stranded wires are further twisted to create a super-high-strength PCAM wire. It may be used as a diameter cable.
このような超大径ケーブルを引張試験する時、第3図に
例を示すようにjllffl線1)の中心(又は内層)
の子撚線12と外層の子撚線I2の素線3同志がそれら
の接触点IOで押し合う。この場合、接触点では第4図
(イ)(上面図)、(ロ)(側面図)に示すように、素
線3,3は接触角βで交叉し、素線3に引張力Tが作用
するため、接触点IOで押付は力Cが働き、斜せん断力
となる。この斜せん断力により、低い荷重、小さな伸び
で素線3が破断し、親撚線全体の破断荷重が低下する。When performing a tensile test on such a super large diameter cable, as shown in Figure 3, the center (or inner layer) of the jllffl wire 1)
The strands 3 of the child twisted wires 12 of the outer layer and the child twisted wires I2 of the outer layer are pressed together at their contact point IO. In this case, at the contact point, as shown in Figure 4 (a) (top view) and (b) (side view), the strands 3 and 3 intersect at a contact angle β, and a tensile force T is applied to the strand 3. Therefore, force C acts on the pressing force at the contact point IO, resulting in an oblique shearing force. Due to this oblique shearing force, the strands 3 are broken under low load and small elongation, and the breaking load of the entire parent strand is reduced.
との破断荷重の低下は、第4図(イ)に示す接触角βに
関係し、接触角βが大きくなる程、接触部における接触
面積Sが小さくなるため、斜せん断応力が太き(なり、
素!l1)3が切れ易くなる。The decrease in the breaking load with ,
Basic! l1) 3 becomes easier to break.
(発明の開示)
本発明は、上述の問題点を解決するため成されたもので
、複合撚線の素線同志ができるだけリニアコンタクトに
近(なるように、接触角が小さくなるように構成するこ
とにより、接触点に働くせん断応力を小さくして、素線
を切れに<<L、、複合撚線としての破断荷重、伸び性
能が優れたPCam合々線の構造を提供せんとするもの
である。(Disclosure of the Invention) The present invention has been made to solve the above-mentioned problems, and is configured so that the strands of the composite stranded wire are as close to linear contact as possible, so that the contact angle is small. By doing so, we aim to reduce the shear stress acting on the contact point so that the strands can be cut <<L, and to provide a PCam stranded wire structure with excellent breaking load and elongation performance as a composite stranded wire. be.
本発明は、複数本の撚線を同心撚して成るPC1)複合
侭腺において、該複合撚線の各層の撚り方向が交互に反
対方向で、かつ前記各層の撚り方向と、各層を構成する
撚線の外層の撚り方向が反対であると共に、中心の撚線
の外層の撚り方向と、該撚線に接する前記複合撚線の層
の撚り方向が同じであることを特徴とすSPCM複合撚
線である。The present invention provides a PC (1) composite cable consisting of a plurality of twisted wires concentrically twisted, in which the twisting direction of each layer of the composite twisted wire is alternately opposite, and the twisting direction of each layer constitutes each layer. An SPCM composite twisted wire characterized in that the twisting direction of the outer layer of the twisted wire is opposite, and the twisting direction of the outer layer of the center twisted wire is the same as the twisting direction of the layer of the composite twisted wire that is in contact with the twisted wire. It is a line.
以下、本発明を図面を用いて実施例により説明す
する。Hereinafter, the present invention will be explained by examples using drawings.
do.
第1図(イ)、(ロ)はそれぞれ本発明の実施例を示す
横断面図、画面図で、7木燃の撚線の7本を撚合せた複
合撚線の場合を示す。図において、1)2は7木の素線
3を撚合せたJ’l嬰腺で、中心の」′−撚腺1の周り
に、6本の子1fil!2が撚り方向をZ IWりにし
て傳合わされている。中心の子撚線1の外層の撚り方向
はZ撚り、周りの子1t、fftlj2の外Hの撚り方
向はS Paっである。点線は子撚線2の内側に面した
素線3を示す。FIGS. 1(A) and 1(B) are a cross-sectional view and a screen view showing an embodiment of the present invention, respectively, and show the case of a composite stranded wire in which seven strands of 7-wooden strands are twisted together. In the figure, 1) 2 is a J'l gland made up of 7 wooden strands 3 twisted together, and around the central strand 1, there are 6 children 1fil! 2 are twisted in the Z IW direction. The twist direction of the outer layer of the central child strand 1 is Z twist, and the twist direction of the outer layer H of the surrounding children 1t and fftlj2 is SPa. The dotted lines indicate the strands 3 facing inside of the child strands 2.
α1を子撚線1,2の素線の撚り角度、α2を親撚線の
外円(6本)の撚り角度とすると、中心の子撚線lの外
面の素線3と周りの子[12の外円の素線3の1妾触角
β1は、
β1=−α+−(−α1−α2)=α2・・・・・・・
・・・・・・(1)例えば子撚線1,2の外層の撚りピ
ッチが外径の約16倍とするとα、=a、S度で、親撚
線の外すの暉すビッチが外径の約16倍とするとα2
= 7.5度であり、この場合の接触角β1は、(1)
式よりβ1=α2 = 7.5度
一方、中心の子matの外層の込り方向を従来のように
S撚りとすると、接触角β1′は、β1′=α+−(−
αl−α2)=2α1+α2・・・・・■= 2 X
8.5+ 7.5= 24.5度従宋の接触角β1′は
本発明による接触角β1より署しく大となる。If α1 is the twisting angle of the strands of the child strands 1 and 2, and α2 is the twisting angle of the outer circle (6 pieces) of the parent strand, then the strands 3 on the outer surface of the central child strand l and the surrounding children [ The 1st antennae β1 of the strand 3 of the 12 outer circles is β1=-α+-(-α1-α2)=α2...
...... (1) For example, if the twist pitch of the outer layer of child strands 1 and 2 is about 16 times the outer diameter, α, = a, S degrees, and the bitch to be twisted is outside when the parent strands are removed. If it is approximately 16 times the diameter, α2
= 7.5 degrees, and the contact angle β1 in this case is (1)
From the formula, β1 = α2 = 7.5 degrees On the other hand, if the direction of the outer layer of the central child mat is S twist as in the conventional case, the contact angle β1' is β1' = α + - (-
αl−α2)=2α1+α2・・・・■= 2 X
8.5+7.5=24.5 degrees The contact angle β1' of Cong.Song is significantly larger than the contact angle β1 of the present invention.
なお、各撚り方向を第1図にようにする代りに、本発明
は、それぞれ図の逆方向、即ち12撚線の外円の撚り方
向をS撚り、中心の子1@!!i1)の外円の撚方向を
S撚り、周りの子Pa線2の外円の撚方向をZ陣りと化
でも良く、図と全く同じ効果が得られる。In addition, instead of making each twist direction as shown in FIG. 1, in the present invention, the twist direction of the outer circle of the 12 strands is S, and the center child 1@! ! The twist direction of the outer circle of i1) may be S twist, and the twist direction of the outer circle of the surrounding child Pa wire 2 may be Z twist, and exactly the same effect as shown in the figure can be obtained.
次に、第2図(イ)、(ロ)はそれぞれ本発明の他の実
施例を示す横断面図、側面図、第5図は従来の複合撚線
の例を示す側面図で、それぞれ7木燃の撚線の13本を
撚合せた複合撚線の場合を示す。図において、4,5.
6はそれぞれ7本の素線3をF21合せた子撚線で、中
心の子撚線4の周りに、6本の子撚線5が撚合わされて
内F!J7が形成され、さらにその外側に12本の子撚
線6が撚合わされて外円8が形成されている。9は6本
のフィラーワイヤである。Next, FIGS. 2A and 2B are a cross-sectional view and a side view showing other embodiments of the present invention, respectively, and FIG. 5 is a side view showing an example of a conventional composite stranded wire. The case of a composite stranded wire made by twisting 13 wood combust stranded wires is shown. In the figure, 4, 5.
6 is a child twisted wire in which seven strands 3 are combined in F21, and six child twisted wires 5 are twisted around the central child twisted wire 4 to form an inner F! J7 is formed, and 12 child twisted wires 6 are further twisted together on the outside thereof to form an outer circle 8. 9 is six filler wires.
第5図の従来例では、践撚線の内心7の撚り方向はSp
Jす、外円8の撚り方向はZ撚りであり、子撚線4,5
.8の外層の撚り方向はすべてS IVりである。ここ
で、町を子撚線4,5.6の素線の撚り角度、α2をj
!1m線の内面7の撚り角度、α3を同じく外58の撚
り角度とすると、中心の子撚線4の外層の素1a3と内
心7の子撚線5の外層の素線3の接触角β1′は、
β1′=1α+−(α2−α1)1
=+2α1−α21・・・・・・・・・・・・・・・・
・f3)又内円7の子撚線5の外層の素t!i13と外
層8の子撚線6の外層の素線3の接触角β2′は、β2
’=1(α2+α1)−(−α3−α1)1=12α1
+α2+α31・・・・・ ・・・・(4)一方、第2
図の本発明例では、親撚線の内円7の撚り方向はS撚り
、外円8の撚り方向はZ撚りで、交互に反対方向であり
、子撚線の外円の込り方向は、中心の子撚線4ではS撚
り、内円7の子撚線5ではZ撚り、外円8の子撚線6で
はS撚りである。ここで第5図と同様に各撚り角度をそ
れぞれα1.α2.α3とすると、中心の子撚t!i1
4の外円の素線3と内心7の子撚線5の外層の素線3の
接触角β1は、
β、=lα+−(α2+α+N=l−α21・ ■又内
層7の子撚tla5の外層の素線3と外層8のf撚線6
の外層の素!!;13の接触角β2は、β2=1(α2
−α1)−(−αローα1)1=1α2+α31・・・
・・・・・・ ・・・・・・(6)例えば子撚!!94
,5.6の外層の臥りピッチが外径の約16倍とすると
α1=85度で、親撚線の内層7の外層の撚りピッチが
外径の約16倍とするとα2=7.5度で、外層8の外
層の撚りピッチが外径の約16倍とするとα3=9.5
度であり、(乱(2)、■、(0式%式%
ニア
t 従・てβ・′〉β・・β2′〉β2である
・即ち・本発明による接触角はいずれも従来例の接触角
に比べ小さく、著しく改善される。In the conventional example shown in FIG. 5, the twist direction of the inner center 7 of the twisted wire is Sp
The twist direction of the outer circle 8 is Z twist, and the child twisted wires 4 and 5
.. The twist direction of the outer layer of No. 8 is all SIV. Here, the twist angle of the child strand wire 4, 5.6, and α2 are j
! If the twist angle of the inner surface 7 of the 1 m wire and α3 are the same as the twist angle of the outer layer 58, then the contact angle between the outer layer element 1a3 of the central child strand 4 and the outer layer element 3 of the child strand 5 of the inner core 7 is β1'. is, β1'=1α+-(α2-α1)1 =+2α1-α21・・・・・・・・・・・・・・・
・f3) Also, the outer layer element t of the child strand 5 of the inner circle 7! The contact angle β2' between i13 and the outer layer strands 3 of the child stranded wires 6 of the outer layer 8 is β2
'=1(α2+α1)-(-α3-α1)1=12α1
+α2+α31・・・・・・(4) On the other hand, the second
In the illustrated example of the present invention, the twist direction of the inner circle 7 of the parent strand wire is S twist, the twist direction of the outer circle 8 is Z twist, which are alternately opposite directions, and the direction of the outer circle of the child strand wire is , the child strands 4 in the center are S-twisted, the child strands 5 in the inner circle 7 are Z-twisted, and the child strands 6 in the outer circle 8 are S-twisted. Here, as in FIG. 5, each twist angle is α1. α2. If α3 is assumed, the child twist at the center is t! i1
The contact angle β1 between the strands 3 of the outer circle of 4 and the strands 3 of the outer layer of the child strands 5 of the inner center 7 is β, = lα + - (α2 + α + N = l - α21 ・ ■ Also, the outer layer of the child strands tla5 of the inner layer 7 f-stranded wire 6 of strands 3 and outer layer 8
The outer layer of the element! ! ; The contact angle β2 of 13 is β2=1(α2
-α1)-(-αlow α1)1=1α2+α31...
・・・・・・ ・・・・・・(6) For example, child twist! ! 94
, 5.6, if the lying pitch of the outer layer is about 16 times the outer diameter, α1 = 85 degrees, and if the twisting pitch of the outer layer of the inner layer 7 of the parent stranded wire is about 16 times the outer diameter, α2 = 7.5. If the twist pitch of the outer layer 8 is approximately 16 times the outer diameter, α3=9.5
(random (2), ■, (0 formula % formula % near t) Therefore, β・'〉β・・β2′〉β2, that is, the contact angle according to the present invention is both that of the conventional example. It is smaller than the contact angle and is significantly improved.
なお、本発明における各博り方向を第2図のようにする
代りに、それぞれ図の逆方間にしても貝く、図と全く同
じ効果が得られる。It should be noted that, instead of setting each of the widening directions in the present invention as shown in FIG. 2, the same effects as those shown in the drawing can be obtained even if they are set in the opposite direction of the drawing.
又上述にように構成すると、本発明では、第1図、第2
図に示すように親PA t!Ilの最外層においても、
又内円においても、表面側に露出している素線3の長手
軸方向に対する角度はα3−α1又はα2−α1で小さ
く、はとんど零に近くなり、これによりPCalW線の
定行グリップでの定行効果が良く、定着部での素線の斜
めせん断破断が防止できる。Furthermore, with the above configuration, in the present invention, FIGS.
As shown in the figure, the parent PA t! Even in the outermost layer of Il,
Also, in the inner circle, the angle with respect to the longitudinal axis direction of the wire 3 exposed on the surface side is small at α3-α1 or α2-α1, and is almost zero, which causes the regular grip of the PCalW wire. It has a good regular running effect and prevents diagonal shear breakage of the strands at the fixing part.
(実施例)
第5図(従来例)および第2図(本発明例)に示すよう
な複合撚線を作成した。(Example) Composite stranded wires as shown in FIG. 5 (conventional example) and FIG. 2 (invention example) were created.
4.22璽iφ鋼線を7本撚合せて外径12.7s*φ
の子’M線とし、この19本と4.4@Sφのフィラー
ワイヤ6本を撚合せ、外径63.5mmの複合撚線とし
た。4. Twisting 7 pieces of 22-wire iφ steel wire to create an outer diameter of 12.7s*φ
These 19 wires were twisted together with 6 filler wires of 4.4@Sφ to form a composite stranded wire with an outer diameter of 63.5 mm.
子撚線1本の破断荷重は19.500に、、伸び(GL
=GIOsm)は6%で、フィラーワイヤ1本の破断荷
重は3,050kg、伸び(GL = 100ts )
7%で、従って合計破断荷重は388,800に、で
あった。The breaking load of one stranded wire is 19.500, and the elongation (GL
= GIOsm) is 6%, the breaking load of one filler wire is 3,050 kg, and the elongation (GL = 100ts)
7%, so the total breaking load was 388,800.
f’Jられた複合(t!線の引張試験による破断荷重お
よび伸びは表1に示す通りである。The breaking load and elongation by the tensile test of the f'J composite (t! line) are shown in Table 1.
表 1
表1より、本発明によるものは、従来例に比べ破断荷重
、伸び共同上することが分る。Table 1 From Table 1, it can be seen that the specimen according to the present invention has a higher breaking load and elongation than the conventional example.
上述の説明では主として7本撚の子撚線の7本又は19
本を撚合せた場合について述べたが、本発明はこれらに
限定されるものではなく、子撚線は7木々線以外でも良
く、又子撚線の本数は7本、19本以外でも良く、それ
らの場合も本発明を同様に適用し得、同様の効果を奏し
得ることは明らかである。In the above explanation, mainly 7 or 19 child strands of 7 strands are used.
Although the case where books are twisted together has been described, the present invention is not limited thereto, and the number of child twisted wires may be other than 7, and the number of child twisted wires may be other than 7 or 19. It is clear that the present invention can be similarly applied to those cases and the same effects can be achieved.
(発明の効果)
上述のように(1■成された本発明のPCff1合撚線
は次のような効果がある。(Effects of the Invention) As described above, the PCff1 stranded wire of the present invention made in (1) has the following effects.
(イ1Fs1合庫線の各月の撚り方向が交互に反対方向
で、かつ前記各月の摸り方向と、各月を構成する撚線の
外層の(然り]」向が反対であると共に、中・いの撚線
の外音の込り方向と、該撚線に接する前記N合撚線の層
の撚り方向が同じであるから、rlA撚線の内側の層と
外側の居の素線同志が接触する角度(接触角)が小さく
なるので、素線と素線が押し付けられる接触点での接触
面積が大きくなって斜せん断応力が減少するため、低い
荷重、小さな伸びで素線が破断せず、従ってPC*l’
W線としての破断荷重、伸び性能の低下が少なく、優れ
た性能を有する。(A) The twisting direction of each month of the 1Fs1 joint wire is alternately opposite, and the direction of twisting of each month is opposite to the direction of the outer layer of the twisted wire constituting each month. , since the direction in which external sound enters the middle and deep stranded wires is the same as the twisting direction of the layer of N-stranded wires that is in contact with the stranded wires, the inner layer of the rlA stranded wire and the outer layer Since the angle at which the wires come into contact with each other (contact angle) becomes smaller, the contact area at the contact point where the wires are pressed becomes larger, and the oblique shear stress is reduced, so the wires can be bent with low load and small elongation. No rupture, therefore PC*l'
It has excellent performance with less deterioration in breaking load and elongation performance as W wire.
(1」) 上述のように撚り方向を構成することによ
り、jM 1M線の最外層においても、又内月において
も、表面側に露出している素線の長手軸方向に対する角
度が小さく、はとんど零に近くなるので、 PC鋼込線
の定行グリップでの定容効果が良く、定行P、Bでの素
線の斜せん断破断が防止できる。(1) By configuring the twist direction as described above, both in the outermost layer of the jM 1M wire and in the inner moon, the angle with respect to the longitudinal axis direction of the strands exposed on the surface side is small, and Since it becomes close to zero, the constant volume effect is good when the PC steel wire is gripped in the regular direction, and diagonal shear breakage of the strands in the regular direction P and B can be prevented.
第1図(イ)、(ロ)、第2図(イ)、(ロ)はそれぞ
れ本発明の実施例を示す図で、第1図は7本の撚線を、
第2図は13本の撚線を撚合せた複合撚線の場合を示し
、それぞれの(イ)図は横断面図、(I」)図は側面図
である。
第3図は従来の複合撚線の例を示す横断面図である。
第4図(イ)、(ロ)は第3図に示す素線同志の接触点
における状態を示す図で、(イ)図は上面図、(ロ)図
は側面図である。
第5図は従来の複合罫線の他の例を示す側面図で、13
木の撚線を撚合せた複合薄線の場合を示す。
1.4・・・中心の撚15A(子撚線)、2.6・・・
外廓の撚t!il(子撚19)、3・・・素線、5・・
・内層の撚線(子撚線)、7・・・内層、8・・・外層
、9・・・フィラーワイヤ、10・・・接触点、■・・
・複合罫線(既mIiり 、!2・・・撚線(子撚線)
、αl、α2.α3・・・撚り角度、β・・・接触角。
第1図
(ロタ
″7t−2図
α) (σ)Figures 1 (a) and (b), and Figures 2 (a) and (b) respectively show embodiments of the present invention. Figure 1 shows seven stranded wires,
FIG. 2 shows the case of a composite stranded wire in which 13 stranded wires are twisted together, and each figure (A) is a cross-sectional view, and each figure (I'') is a side view. FIG. 3 is a cross-sectional view showing an example of a conventional composite twisted wire. FIGS. 4(a) and 4(b) are diagrams showing the state of the contact points of the strands shown in FIG. 3, in which FIG. 4(a) is a top view and FIG. 4(b) is a side view. FIG. 5 is a side view showing another example of the conventional compound ruled line.
The case of composite thin wire made by twisting wooden strands is shown. 1.4...Center twist 15A (child twist), 2.6...
Outer twist! il (child twist 19), 3... elemental wire, 5...
・Inner layer twisted wire (child twisted wire), 7... Inner layer, 8... Outer layer, 9... Filler wire, 10... Contact point, ■...
・Compound ruled line (already mIi ri, !2... twisted wire (child twisted wire)
, αl, α2. α3...Twisting angle, β...Contact angle. Figure 1 (Rota"7t-2 figure α) (σ)
Claims (2)
おいて、該複合撚線の各層の撚り方向が交互に反対方向
で、かつ前記各層の撚り方向と、各層を構成する撚線の
外層の撚り方向が反対であると共に、中心の撚線の外層
の撚り方向と、該撚線に接する前記複合撚線の層の撚り
方向が同じであることを特徴とするPC鋼複合撚線。(1) In a PC steel composite stranded wire formed by concentrically twisting a plurality of stranded wires, the twist direction of each layer of the composite strand is alternately opposite, and the twist direction of each layer and the twist constituting each layer A PC steel composite twisted wire characterized in that the twisting direction of the outer layer of the wire is opposite, and the twisting direction of the outer layer of the central twisted wire is the same as the twisting direction of the layer of the composite twisted wire that is in contact with the twisted wire. line.
合せたものである特許請求の範囲第1項記載のPC鋼複
合撚線。(2) The PC steel composite stranded wire according to claim 1, wherein the composite stranded wire is a combination of 7 or 19 strands of 7 strands.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22094684A JPS6199532A (en) | 1984-10-19 | 1984-10-19 | Pc-steel composite stranded wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22094684A JPS6199532A (en) | 1984-10-19 | 1984-10-19 | Pc-steel composite stranded wire |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6199532A true JPS6199532A (en) | 1986-05-17 |
Family
ID=16759027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22094684A Pending JPS6199532A (en) | 1984-10-19 | 1984-10-19 | Pc-steel composite stranded wire |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6199532A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007161294A (en) * | 2005-12-13 | 2007-06-28 | Kyodo Printing Co Ltd | Packaging container |
-
1984
- 1984-10-19 JP JP22094684A patent/JPS6199532A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007161294A (en) * | 2005-12-13 | 2007-06-28 | Kyodo Printing Co Ltd | Packaging container |
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