JPS5890337A - Treatment for fixing end of pc steel stranded wire - Google Patents
Treatment for fixing end of pc steel stranded wireInfo
- Publication number
- JPS5890337A JPS5890337A JP18660381A JP18660381A JPS5890337A JP S5890337 A JPS5890337 A JP S5890337A JP 18660381 A JP18660381 A JP 18660381A JP 18660381 A JP18660381 A JP 18660381A JP S5890337 A JPS5890337 A JP S5890337A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- stranded wire
- steel stranded
- crimp
- grip
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 26
- 239000010959 steel Substances 0.000 title claims description 26
- 238000000034 method Methods 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 description 11
- 238000009415 formwork Methods 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 235000007575 Calluna vulgaris Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wire Processing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は建築構造物のコンクリートスラブなどに用い
るＰＣ鋼撚線の固定画定着端部の処理方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating fixed image fixing ends of stranded PC steel wires used for concrete slabs of building structures and the like.
最近建築用の各種コンクリートスラブにおいて、ひび割
れ、たるみなどの防止めためＰＣ鋼撚線を用いてプレス
トレストコンクリートとすることが多くなっている。こ
の場合緊張するＰＣ鋼撚線の配置や定着部の配置などに
非常に施工性と施工精度が要求される。一般に比較的ス
パンの短む）スラブにおいては、ＰＣ鋼撚線を片側緊張
することによってプレストレスを導入するが、この時緊
張しない側（固定側）には施工性を良くする為、予め工
場において必要な長さにＰＣ鋼撚線を切断して一端に鋼
製のスリーブを圧着（以下圧着グリップという）したも
のを使用するのが通常である。たとえば第１図に示すよ
うにコンクリートの型枠１内に支圧板４を置き、これに
定着に切断したポリエチレンシースを冠せたアンボンド
ＰＣ鋼撚線２の一端に圧着グリップ８を圧着したものを
通して配置し、コンクリートを流し込んで固めてコンク
リートが固化してからＰＣｊ鋼撚線を他端から緊張して
プレストレスを導入する方法がある。−しかし従来の方
法では支圧板と圧着グリップが一体となって固定されて
いない為施工性が悪く、またコンクリート打設中にコン
クリートをつきかためる為のパイブレーク−の振動やそ
の他の原因によって支圧板の孔とＰＣ鋼撚線の中心のず
れ、あるいは支圧板とＰＣ鋼撚線、圧着グリップの直角
性が悪くなる場合がある。ＰＣ鋼撚線に与える緊張力は
圧着グリップ、支圧板を介してコンクリートに伝えられ
るが支圧板、圧着グリップなどの配置が正確でないと緊
張力を導入した時発生する定着部での割裂応力によりコ
ンクリート表面にひび割れの発生などが生じる危険があ
る。Recently, in various types of concrete slabs for construction, prestressed concrete is often made of prestressed concrete using PC steel strands in order to prevent cracking, sagging, etc. In this case, great workability and precision are required for the arrangement of the tensed PC steel strands and the arrangement of the anchoring parts. In slabs (generally with relatively short spans), prestress is introduced by tensioning the PC steel strands on one side, but at this time, the side that is not tensioned (fixed side) is pre-stressed at the factory in order to improve workability. Usually, a PC steel stranded wire is cut to the required length and a steel sleeve is crimped to one end (hereinafter referred to as a crimping grip). For example, as shown in Fig. 1, a bearing plate 4 is placed in a concrete formwork 1, and a crimp grip 8 is crimped onto one end of an unbonded PC steel strand 2 with a cut polyethylene sheath attached to it. There is a method in which prestress is introduced by placing the PCJ steel strands under tension from the other end after the concrete has hardened by pouring concrete. -However, with the conventional method, the bearing plate and the crimp grip are not fixed as one unit, which makes workability difficult.Also, the vibration of the pie break used to hold the concrete during concrete pouring and other causes can cause the bearing plate to The center of the hole and the stranded PC steel wire may be misaligned, or the perpendicularity between the bearing plate, the stranded PC steel wire, and the crimp grip may deteriorate. The tension applied to the PC steel strands is transmitted to the concrete through the crimp grips and bearing pressure plates, but if the bearing plates and crimp grips are not placed correctly, splitting stress at the anchorage that occurs when tension is introduced will cause damage to the concrete. There is a risk of cracks occurring on the surface.
この発明は一定の長さのＰＣ鋼撚線の一端の圧着グリッ
プと支圧板を一体化して固定するように処理するもので
上記欠点を解消したＰＣ鋼撚線の固定端の処理方法を提
供するものである。This invention provides a method for processing fixed ends of PC steel strands that solves the above-mentioned drawbacks by integrally fixing a crimp grip and a bearing plate at one end of a predetermined length of PC steel strands. It is something.
以下図面にしたがって杢発明の詳細な説明する。The heather invention will be described in detail below with reference to the drawings.
第２図、第３図に示すように一定の長さに切断したＰＣ
鋼撚線２の一端に鋼製スリーブすなわち圧着グリップ８
を圧着する。その場合ＰＣ鋼撚線の端末２′が１０〜２
０１ｍ圧着グリップから突出す４の孔を通し、一方ＰＣ
鋼撚線２の外径より僅かに大きな中心穴を有する支持板
８を圧着グリップの端部に当て、先端をネジ切りした支
持棒６を支圧板４の孔に通したのちナツト７を回転して
支圧板４と支持板８を圧着グリップ３を挾んで締めっけ
ることによって支圧板４と圧着グリップ８を一体化して
固定する。この場合支圧板と支持板を−めっける支持棒
としてはボルトやナツトを使用しても良く図示の先端が
曲がった支持棒に限定されるものではない。PC cut to a certain length as shown in Figures 2 and 3
A steel sleeve or crimp grip 8 is attached to one end of the steel strand 2.
Crimp. In that case, the terminal 2' of the PC steel stranded wire is 10 to 2
Pass through the 4 holes protruding from the 01m crimp grip, and connect the PC
A support plate 8 having a center hole slightly larger than the outer diameter of the steel stranded wire 2 is placed on the end of the crimp grip, a support rod 6 with a threaded tip is passed through the hole in the support plate 4, and then the nut 7 is rotated. By tightening the pressure-bearing plate 4 and the support plate 8 by sandwiching the pressure-bonding grip 3, the pressure-bearing plate 4 and the pressure-bonding grip 8 are integrated and fixed. In this case, a bolt or a nut may be used as the support rod for plating the bearing pressure plate and the support plate, and the support rod is not limited to the illustrated support rod having a bent tip.
以上詳しく説明したように本発明は一定の長さに切断し
たＰＣ鋼撚線の定着端を圧着グリップと支圧板が一体と
なるようにして固着せしめる処理方法であり、この処理
をしたＰＣ鋼撚線を使用すればＰＯ鋼撚線の定着端部を
配置するとき施工性が非常に良く、また施工精度が良く
なりストレス導入後のひび割れなどを防止できるもので
ある。As explained in detail above, the present invention is a processing method for fixing the fixed ends of stranded PC steel wires cut to a certain length so that the crimp grip and the bearing plate are integrated. If a wire is used, the workability is very good when arranging the fixing end of the PO steel stranded wire, and the work accuracy is also improved, and cracks etc. can be prevented after stress is introduced.
第１図はコンクリートスラブの製造方法を示す断面図。
第２図、第８図−は本発明のＰＣ鋼撚線の端末処理方法
を示す側面図、正面図である。
１・・・型枠、２・・・ＰＣ鋼撚線、２′・・・突出端
、３・・・圧着グリップ、４・・・支圧板、５・・・コ
ンクリート、６・・・支持棒、７・・・ナツト、８・・
・支持板。
代理人 弁理士田中理夫
第１図
第２図
第３図FIG. 1 is a cross-sectional view showing a method of manufacturing a concrete slab. FIG. 2 and FIG. 8 are a side view and a front view showing the terminal treatment method of PC steel stranded wire of the present invention. 1... Formwork, 2... PC steel stranded wire, 2'... Projecting end, 3... Crimp grip, 4... Bearing plate, 5... Concrete, 6... Support rod , 7...Natsuto, 8...
・Support plate. Agent: Patent Attorney Rio Tanaka Figure 1 Figure 2 Figure 3
Claims (1)
０ｆｉ突出させて圧着グリップ８を圧着し、ＰＣ鋼撚線
２の外径より僅かに大きい中心孔を有する支持板８をｐ
ｃ鋼撚線の突出端を利用して取り付け、支持板８と支圧
板４を圧着グリップ８を挾んで支持棒６を用いてネジに
より締めつけることによって支圧板と圧着グリップを堅
固に一体化して固定することを特徴とするＰＣ鋼撚線の
定着端部処理方法。1. The anchoring end 2' of a fixed length of PC steel stranded wire is lθ~2
0fi is protruded and the crimp grip 8 is crimped, and the support plate 8 having a center hole slightly larger than the outer diameter of the PC steel stranded wire 2 is attached.
c Attach using the protruding ends of stranded steel wires, sandwich the crimp grip 8 between the support plate 8 and the crimp grip 4, and tighten with screws using the support rod 6 to firmly integrate and fix the crimp grip. A method for treating a fixed end of a PC steel stranded wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18660381A JPS5890337A (en) | 1981-11-20 | 1981-11-20 | Treatment for fixing end of pc steel stranded wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18660381A JPS5890337A (en) | 1981-11-20 | 1981-11-20 | Treatment for fixing end of pc steel stranded wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5890337A true JPS5890337A (en) | 1983-05-30 |
| JPS6355379B2 JPS6355379B2 (en) | 1988-11-02 |
Family
ID=16191447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18660381A Granted JPS5890337A (en) | 1981-11-20 | 1981-11-20 | Treatment for fixing end of pc steel stranded wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5890337A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0275431A (en) * | 1988-09-12 | 1990-03-15 | Hokkai Koki Kk | Working method for pc steel stranded wire rolled threads |
| US7066142B2 (en) | 2002-09-11 | 2006-06-27 | Mikuni Corporation | Multiple throttle apparatus |
-
1981
- 1981-11-20 JP JP18660381A patent/JPS5890337A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0275431A (en) * | 1988-09-12 | 1990-03-15 | Hokkai Koki Kk | Working method for pc steel stranded wire rolled threads |
| US7066142B2 (en) | 2002-09-11 | 2006-06-27 | Mikuni Corporation | Multiple throttle apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6355379B2 (en) | 1988-11-02 |
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