JPS6018494Y2 - Prestressed concrete tensioning device - Google Patents
Prestressed concrete tensioning deviceInfo
- Publication number
- JPS6018494Y2 JPS6018494Y2 JP9957679U JP9957679U JPS6018494Y2 JP S6018494 Y2 JPS6018494 Y2 JP S6018494Y2 JP 9957679 U JP9957679 U JP 9957679U JP 9957679 U JP9957679 U JP 9957679U JP S6018494 Y2 JPS6018494 Y2 JP S6018494Y2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- tensioning device
- steel
- prestressed concrete
- tension
- 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
Links
Description
【考案の詳細な説明】
従来のコンクリート構造物に使用するプレストレスト工
法では、緊張材として鋼棒や鋼索などの線状の緊張材を
用いたもので、コンクリート桁の中に多数の線材を埋込
んだ際に、各線材の緊張定着の作業が軸軽し、また、枠
相互間の連結に関し、線材相互の接合に、ねじりカップ
リングなどの煩雑な作業が要求される。[Detailed explanation of the idea] In the conventional prestressing method used for concrete structures, linear tension members such as steel rods and steel cables are used as tension members, and a large number of wire members are embedded in concrete girders. At this time, the work of tensioning and fixing each wire rod is time consuming, and in connection with the connection between the frames, complicated work such as torsional coupling is required to join the wire rods to each other.
また、線材であるため、これを使用して製造したコンク
リート桁等の載荷性能には一定の限界があった。Furthermore, since it is a wire rod, there is a certain limit to the loading performance of concrete girders manufactured using it.
本考案の目的は、上記不都合を解消し、定着作業が単純
で、かつ緊張材相互の接合が容易で、しかもこれを使用
して製造したコンクリート桁などは、載荷性能に優れて
いるものが得られるプレストレストコンクリートの緊張
装置を提供することにある。The purpose of this invention is to eliminate the above-mentioned disadvantages, to simplify the fixing work, to easily join tendons together, and to produce concrete girders, etc., that have excellent loading performance. The purpose of the present invention is to provide a tensioning device for prestressed concrete that can be used.
しかしてこの目的は本考案によれば、長手方向に対し
、直角な凸条を並列させて部材の表面に設けた形鋼を、
鉄筋コンクリートアバツトメントの両端に設置された固
定定着プレートと可動定着プレート間に挿入し、相互に
ボルト接合して連結し、前記形鋼の周囲にコンクリート
型枠を配することにより遠戚される。However, according to the present invention, the purpose of the lever is to use a shaped steel provided on the surface of the member with protrusions arranged in parallel at right angles to the longitudinal direction.
It is inserted between a fixed fixing plate and a movable fixing plate installed at both ends of a reinforced concrete abutment, and they are connected by bolting to each other, and a concrete formwork is placed around the shaped steel.
つぎに図面について、■形鋼を緊張材として利用した場
合の実施例について説明すると、第１図に示すようにＩ
形鋼１の長手方向に直角な凸条３．３を、圧延加工など
の手法を用いて、並列させて形成する。Next, with regard to the drawings, ■Explaining an example in which section steel is used as a tendon material, as shown in Figure 1, I
Convex strips 3.3 perpendicular to the longitudinal direction of the shaped steel 1 are formed in parallel using a method such as rolling.
つぎに、この■形鋼１を、ＲＣアバツトメント４の両端
に設置された固定定着プレート５と可動定着プレート６
の間に挿入し、相互にボルト接合したのち、■形鋼１の
周囲にコンクリート型枠７を配して、コンクリートを打
設するとともに、可動定着プレート６をジヤツキ８で移
動し、■形鋼１を緊張し、緊張力を与えて、コンクリー
トの硬化後に脱型する。Next, the fixed fixing plate 5 and the movable fixing plate 6 installed at both ends of the RC abutment 4 are attached to the section steel 1.
After inserting the concrete formwork 7 around the shaped steel 1 and pouring concrete, move the movable fixing plate 6 with the jacks 8, and 1 and apply tension, and after the concrete hardens, it is removed from the mold.
このようにして得られたコンクリート桁は、第３図の縦
断面図で示すように、中央にプレストレスト緊張材とし
てのＩ形鋼１が位置し、その周辺には補助鉄筋９が施さ
れており、■形鋼１は長手方向に緊張力が付加されてい
るが、フランジ２の表面の凸条３，３′・・・・・・が
桁全体のコンクリートにプレテンシンを与えるのに効果
的な役目をなしている。As shown in the longitudinal cross-sectional view of Fig. 3, the concrete girder thus obtained has an I-beam 1 serving as a prestressed tension member located in the center, and auxiliary reinforcing bars 9 are placed around it. , ■ Tension is applied to the section steel 1 in the longitudinal direction, but the protrusions 3, 3', etc. on the surface of the flange 2 play an effective role in applying pretension to the concrete of the entire girder. is doing.
また桁を構造力学的な面から見ればプレストレスが与え
られている上に、形鋼の断面２次モーメントを有効に活
用できるので、高度な載荷性能を有するコンクリート桁
が得られる。Furthermore, from a structural mechanics point of view, the girder is prestressed and the moment of inertia of the section steel can be effectively utilized, so a concrete girder with high loading performance can be obtained.
本考案のプレストレストコンクリートの緊張装置は、緊
張材として形鋼を用いたので、一本の緊張材ですみ、緊
張定着作業が単純で、かつ緊張材相互の接合は通常の鉄
骨組立て作業と同様に補助プレートとボルトにより容易
に行なうことができ、またこれを使用すれば、載荷性能
に優れたコンクリート桁などを得られるものである。Since the prestressed concrete tensioning device of the present invention uses section steel as the tension material, only one tension material is required, the tension fixing work is simple, and the joining of the tension materials to each other can be done in the same way as normal steel frame assembly work. This can be easily done using auxiliary plates and bolts, and by using this, concrete girders etc. with excellent loading performance can be obtained.
第１図は、本考案のコンクリ−ト緊張装置で用いる緊張
材の拡大斜面図、第２図は本考案装置の実施例を示す側
面図、第３図は本考案装置で得られた部材をコンクリー
ト桁に組込んだ縦断正面図である。
１・・・・・・■形鋼、２・・・・・・フランジ、３，
３’・・・・・・凸条。Fig. 1 is an enlarged perspective view of the tending material used in the concrete tensioning device of the present invention, Fig. 2 is a side view showing an embodiment of the device of the present invention, and Fig. 3 shows a member obtained by the device of the present invention. It is a longitudinal sectional front view built into a concrete girder. 1... ■Shaped steel, 2... Flange, 3,
3'... Convex ridges.
Claims (1)
設けた形鋼を、鉄筋コンクリートアバツトメントの両端
に設置された固定定着プレートと可動定着プレート間に
挿入し、相互にボルト接合して連結し、前記形鋼の周囲
にコンクリート型枠を配することを特徴とするプレスト
レストコンクリートの緊張装置。A shaped steel with parallel protrusions arranged perpendicular to the longitudinal direction on the surface of the member is inserted between a fixed anchor plate and a movable anchor plate installed at both ends of a reinforced concrete abutment, and bolted together. A tensioning device for prestressed concrete, characterized in that the steel sections are connected together, and a concrete formwork is arranged around the section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957679U JPS6018494Y2 (en) | 1979-07-20 | 1979-07-20 | Prestressed concrete tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957679U JPS6018494Y2 (en) | 1979-07-20 | 1979-07-20 | Prestressed concrete tensioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5619626U JPS5619626U (en) | 1981-02-20 |
| JPS6018494Y2 true JPS6018494Y2 (en) | 1985-06-05 |
Family
ID=29332324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9957679U Expired JPS6018494Y2 (en) | 1979-07-20 | 1979-07-20 | Prestressed concrete tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018494Y2 (en) |
-
1979
- 1979-07-20 JP JP9957679U patent/JPS6018494Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5619626U (en) | 1981-02-20 |
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