JPH0532542B2 - - Google Patents
Info
- Publication number
- JPH0532542B2 JPH0532542B2 JP59163928A JP16392884A JPH0532542B2 JP H0532542 B2 JPH0532542 B2 JP H0532542B2 JP 59163928 A JP59163928 A JP 59163928A JP 16392884 A JP16392884 A JP 16392884A JP H0532542 B2 JPH0532542 B2 JP H0532542B2
- Authority
- JP
- Japan
- Prior art keywords
- steel
- sheath
- unbonded
- steel stranded
- wires
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- 230000003449 preventive effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 description 7
- 238000004873 anchoring Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
- D07B1/141—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases
- D07B1/144—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising liquid, pasty or powder agents, e.g. lubricants or anti-corrosive oils or greases for cables or cable components built-up from metal wires
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
- D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
-
- 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
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Reinforcement Elements For Buildings (AREA)
- Ropes Or Cables (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ロツクアンカー、アースアンカー、
或いは建築用スラブ等に使用されるアンボンド工
法用シームレスシートアンボンドプレストレスト
コンクリート鋼より線（以下、略してアンボンド
PC鋼より線と云う）、詳しくは、複数本のPC鋼
より線を同一シース空間内に配置し一体化したア
ンボンドPC鋼より線に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to lock anchors, earth anchors,
Alternatively, seamless sheet for unbonded construction method used for construction slabs, unbonded prestressed concrete steel stranded wire (hereinafter abbreviated as unbonded
Specifically, it relates to an unbonded PC steel stranded wire in which multiple PC steel stranded wires are arranged in the same sheath space and integrated.
最近のロツクアンカー、アースアンカーに於い
ては、PC鋼より線の自由長部分の防錆効果が得
られることがら、アンカー先端の定着部のみ被覆
シースとグリース等の潤滑・防錆剤を除去したア
ンボンドPC鋼より線が多く使用されるようにな
つてきており、このようなアンカー工事では、通
常、１つのケーブルに大きな緊張力を加えるた
め、PC鋼より線を複数本束ねて使用している。
In recent rock anchors and earth anchors, the coating sheath and lubricant/rust preventive agent such as grease are removed only from the anchoring part at the tip of the anchor, since the rust prevention effect can be obtained from the free length of the PC steel stranded wire. Unbonded prestressed steel wires are increasingly being used, and in such anchor work, multiple prestressed steel stranded wires are usually bundled together to apply large tension to one cable. .
一方、建築分野に於いても、スラブの撓み、ひ
び割れ防止を目的として、アンボンドPC鋼より
線を多く使用する傾向にあるが、この線が１本宛
挾い間隔でスラブ内に密に配置されていると、将
来、当該スラブに開口を設けることが要求された
ときに、緊張力の付与されたPC鋼より線の処理
が問題となるので、かゝる線を避けて可能な限り
大きな開口をあけられるよう、アンボンドPC鋼
より線を複数本束ねてその埋設ピツチを広げるこ
とがある。 On the other hand, in the construction field, there is a tendency to use more wires than unbonded PC steel in order to prevent slabs from warping and cracking. If the slab is required to have an opening in the future, handling the tensile prestressed steel strands will be a problem, so avoid such wires and make the opening as large as possible. In order to open the hole, multiple unbonded PC steel stranded wires may be tied together to widen the buried pit.
以上の如く、従来は、アンボンドPC鋼より線
を同一個所に複数本配置する場合、１本のPC鋼
より線を必要本数束ねて使用しているが、これで
は、プレストレストコンクリート構造物等を造る
際の作業性が悪く、完成迄に余分の手間がかゝる
ため、工事費も割高になる。
As mentioned above, conventionally, when multiple unbonded PC steel stranded wires are placed at the same location, the necessary number of single PC steel stranded wires are bundled together. The work efficiency is poor, and it takes extra time to complete the process, making the construction cost relatively high.
そこで、本発明は、アンボンドPC鋼より線を
使用する構造物の施行性及び経済性を高めること
を目的として、要求されるアンボンドPC鋼より
線と同じ本数の通常PC鋼より線を、内部境界を
もたない１つのシースの同一空間内に非接触状
態、つまり、各PC鋼より線間に潤滑・防錆剤の
充填される隙間の生じるように配置し、それを括
れ部のあるシースによつて一体化したアンボンド
PC鋼により線を提供しようとするものである。
Therefore, in order to improve the construction efficiency and economic efficiency of structures using unbonded PC steel strands, the present invention provides the same number of normal PC steel strands as the required unbonded PC steel strands to the internal boundaries. The wires are placed in a non-contact state in the same space of a single sheath that does not have a constriction, that is, there is a gap filled with lubricant and anti-corrosion agent between the wires of each PC steel, and then it is placed in a sheath with a constriction. Unbonded and unified
The aim is to provide wires made of PC steel.
即ち、公知のアンボンドPC鋼より線は、第１
図に示すように、１本のPC鋼より線１をシース
２で覆い、両者間の隙間に潤滑・防錆剤３を充填
した構造とされていたため、施行時に束ね作業が
必要になつているが、後に詳述するように、複数
本のPC鋼より線を水平方向又は水平及び垂直方
向に配列して予め１つのシース内に収めておけば
施工時の束ね作業は不要になる。 That is, the known unbonded PC steel strands are
As shown in the figure, the structure was such that a single prestressed steel strand 1 was covered with a sheath 2, and the gap between the two was filled with a lubricant/rust preventive agent 3, which required bundling work during installation. However, as will be detailed later, if a plurality of stranded PC steel wires are arranged horizontally or horizontally and vertically and housed in one sheath in advance, bundling work during construction becomes unnecessary.
なお、類似の技術として、実開昭52−18522号
公報には、１つの保護シース内に複数本の鋼材を
挿入することが示されているが、この構造では、
シース内での鋼材の偏在、接触、交錯等が起こる
恐れがある。安定した緊張力の付与、軟質シース
を用いた場合の搬送中のシースの保護、各線の一
端と他端の簡便な識別のためには、そのような懸
念も取り除く必要があるので、本発明では、シー
スにPC鋼より線の自由な移動を規制する括れ部
を設けてこの要求も満たす。 Incidentally, as a similar technique, Japanese Utility Model Application Publication No. 18522/1983 discloses inserting multiple steel members into one protective sheath, but with this structure,
There is a risk that steel materials may be unevenly distributed, come into contact, or intertwine within the sheath. In order to apply stable tension, protect the sheath during transportation when using a soft sheath, and easily identify one end and the other end of each wire, it is necessary to eliminate such concerns, so the present invention This requirement is also met by providing a constriction in the sheath that restricts the free movement of the PC steel strands.
以下、添付第２図以降の図面に基いて、本発明
に係るアンボンドPC鋼より線の実施例をいくつ
か説明する。
Hereinafter, some embodiments of the unbonded PC steel stranded wire according to the present invention will be described based on the accompanying drawings from FIG. 2 onwards.
第２図及び第３図に示すアンボンドPC鋼より
線１０は、複数本のPC鋼より線１１を水平方向
に僅かに間隔をあけて配列し、それをポリエチレ
ン等を素材としたある程度柔軟性があり、かつ内
部境界のないシース１２で覆い、シース内面と
PC鋼より線との間及び各PC鋼より線間に生じた
空間にグリース等の潤滑・防錆剤１３を充填して
成る。 The unbonded PC steel stranded wire 10 shown in FIGS. 2 and 3 consists of a plurality of PC steel stranded wires 11 arranged horizontally at slight intervals, and made of polyethylene or the like with some degree of flexibility. covered with a sheath 12 with no inner boundary, and the inner surface of the sheath
The spaces created between the PC steel strands and between each PC steel strand are filled with a lubricant/rust preventive agent 13 such as grease.
一方、第４図に示すアンボンドPC鋼より線１
０は、複数本のPC鋼より線１１を、水平及び垂
直方向に非接触状態に配列したものを、シース１
２で覆い、シースの内部空間を潤滑・防錆剤１３
で埋めて成る。 On the other hand, the unbonded PC steel strand wire 1 shown in Figure 4
0 is a sheath 1 in which a plurality of PC steel stranded wires 11 are arranged horizontally and vertically in a non-contact state.
2, and the internal space of the sheath is coated with a lubricant/rust preventive agent 13.
It is filled with
このように、１つのシースによつて覆うPC鋼
より線１１は、その配列本数、配列方向を任意に
設定でき、より線をどの方向に配列してもその外
周全域が潤滑・防錆剤によつて保護される。 In this way, the number and direction of arrangement of the PC steel stranded wires 11 covered by one sheath can be set arbitrarily, and no matter which direction the stranded wires are arranged, the entire outer periphery is covered with lubricant and rust preventive agent. protected.
なお、PC鋼より線１１は、シース内部におけ
るより線の移動を少なくし、かつ隣り合うより線
の相互接触をなくすために、第２図に示すよう
に、隣り合うPC鋼より線の共通接線ａ中間部に、
PC鋼より線１１の外周に沿つて共通接線ａより
も内側に喰込む括れ部１２ａをシース１２に設け
ておく。この括れ部はシースを押出成形すること
によつて簡単に形成することができる。 Furthermore, in order to reduce the movement of the stranded wires inside the sheath and to eliminate mutual contact between adjacent stranded wires, the PC steel stranded wires 11 are connected to the common tangent line of the adjacent PC steel stranded wires, as shown in Fig. 2. a In the middle part,
A constricted portion 12a is provided in the sheath 12 along the outer periphery of the PC steel stranded wire 11, cutting inward from the common tangent line a. This constriction can be easily formed by extrusion molding the sheath.
以上から成る本発明のアンボンドPC鋼より線
は、複数本のPC鋼より線が１つのシースの空間
内に配置されているので、その施工に当つて、従
来のアンボンドPC鋼より線のように必要本数を
束ねる必要がなく、取扱いに便利であり、従つ
て、工事の作業性が向上し、工事価格も引下げら
れる。
The unbonded PC steel stranded wire of the present invention, which consists of the above, has a plurality of PC steel stranded wires arranged within the space of one sheath, so when constructing it, it can be constructed in the same way as the conventional unbonded PC steel stranded wire. There is no need to bundle the required number of wires, and it is convenient to handle, thus improving work efficiency and reducing construction costs.
また、本発明のアンボンドPC鋼より線は、シ
ース内部に境界がないので定着部近傍のシース剥
ぎが容易であり、しかもシース切除後は、各PC
鋼より線を同一個所にまとめて定着できるのは勿
論、その線を１本１本分岐させて別の定着体に定
着させることもできる。 In addition, since the unbonded PC steel stranded wire of the present invention has no boundary inside the sheath, it is easy to strip the sheath near the anchoring part, and after removing the sheath, each PC
Not only can the steel stranded wires be fixed all at once in the same location, but the wires can also be branched out one by one and fixed to separate fixing bodies.
さらに、シースに設けた括れ部がPC鋼より線
の自由な移動を規制するので、シース内でのより
線の偏在、相互接触、交錯等も起こらず、これ等
のことが原因となつて起こる不具合も回避され
る。 Furthermore, since the constriction provided in the sheath restricts the free movement of the PC steel strands, uneven distribution, mutual contact, and crossing of the strands within the sheath will not occur, which could otherwise occur. Problems are also avoided.
そのほか、シースはある程度柔軟性があるの
で、一体化された線の曲線上への配置が可能とな
り、全体に均一な圧縮力を付与する必要のあるサ
イロやタンク等の同形構造物への適用も可能にな
る。 In addition, since the sheath has some flexibility, it can be placed on the curve of the integrated line, and it can also be applied to homogeneous structures such as silos and tanks that require uniform compressive force throughout. It becomes possible.
第１図は、従来のアンボンドPC鋼より線を示
す断面図、第２図乃至第４図は本発明のアンボン
ドPC鋼より線の一実施態様を示す断面図である。
１０……アンボンドPC鋼より線、１１……PC
鋼より線、１２，１２′……シース、１２ａ……
括れ部、１３……潤滑・防錆剤。
FIG. 1 is a sectional view showing a conventional unbonded PC steel strand, and FIGS. 2 to 4 are sectional views showing an embodiment of the unbonded PC steel strand of the present invention. 10...Unbonded PC steel stranded wire, 11...PC
Stranded steel wire, 12, 12'...sheath, 12a...
Constriction, 13... Lubricating/antirust agent.
Claims (1)
に、複数のPC鋼より線を潤滑・防錆剤を介して
非接触状態に配置すると共に、隣り合うPC鋼よ
り線の共通接線中間部において、上記シースに、
PC鋼より線の外周に沿い、かつ上記共通接線よ
りも内側に喰込む括れ部を設けたことを特徴とす
るアンボンドPC鋼より線。1 A plurality of PC steel stranded wires are arranged in a non-contact state through a lubricant and rust preventive agent inside one coated sheath that has no internal boundaries, and at the common tangent middle part of adjacent PC steel stranded wires, In the above sheath,
An unbonded PC steel stranded wire characterized by having a constricted portion along the outer periphery of the PC steel stranded wire and biting inward from the common tangent line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59163928A JPS6145051A (en) | 1984-08-04 | 1984-08-04 | Unbond pc steel twist wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59163928A JPS6145051A (en) | 1984-08-04 | 1984-08-04 | Unbond pc steel twist wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6145051A JPS6145051A (en) | 1986-03-04 |
| JPH0532542B2 true JPH0532542B2 (en) | 1993-05-17 |
Family
ID=15783485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59163928A Granted JPS6145051A (en) | 1984-08-04 | 1984-08-04 | Unbond pc steel twist wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6145051A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726257A (en) * | 1980-07-25 | 1982-02-12 | Toyota Motor Corp | Exhaust gas recycling controller of diesel engine |
| JPS5726256A (en) * | 1980-07-25 | 1982-02-12 | Toyota Motor Corp | Exhaust gas recycling controller of diesel engine |
| JPS5726255A (en) * | 1980-07-25 | 1982-02-12 | Toyota Motor Corp | Exhaust gas recycling controller of diesel engine |
| JP2009068333A (en) * | 2008-12-15 | 2009-04-02 | Sumitomo Denko Steel Wire Kk | Handling method of prefabricated cable |
| KR101274988B1 (en) * | 2010-12-23 | 2013-06-17 | 재단법인 포항산업과학연구원 | Apparatus for introducing stress |
-
1984
- 1984-08-04 JP JP59163928A patent/JPS6145051A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6145051A (en) | 1986-03-04 |
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