JPH0333878B2 - - Google Patents
Info
- Publication number
- JPH0333878B2 JPH0333878B2 JP57158774A JP15877482A JPH0333878B2 JP H0333878 B2 JPH0333878 B2 JP H0333878B2 JP 57158774 A JP57158774 A JP 57158774A JP 15877482 A JP15877482 A JP 15877482A JP H0333878 B2 JPH0333878 B2 JP H0333878B2
- Authority
- JP
- Japan
- Prior art keywords
- cables
- cable
- shaped
- loop
- concrete structure
- 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
- 238000000034 method Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
Landscapes
- Panels For Use In Building Construction (AREA)
- Artificial Fish Reefs (AREA)
- Rod-Shaped Construction Members (AREA)
Description
【発明の詳細な説明】
本発明はコンクリート凾体、タンク等の構造物
に対するプレストレス導入方法に係るものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of introducing prestress into structures such as concrete enclosures and tanks.
従来この種の構造物にPCケーブルによつてプ
レストレスを導入する場合、構造物の側壁１に
PCケーブル２を緊張定着してプレストレスを導
入したのち、底版３にPCケーブル２′を配設して
プレストレスを導入するが、この際、全側壁１部
のPCケーブル２と底版３部のPCケーブル２′の
定着部が隅角部に集中交叉し、この部分の補強が
困難になるとともに、応力解析が十分にできず、
また隅角部が構造上の弱点となる。（第１図及び
第２図参照）
本発明はこのような欠点を除去するために提案
されたもので、コンクリート躯体内に複数のルー
プ状PCケーブルを、相隣るPCケーブルが互いに
重合するように配設するとともに、同各ケーブル
の躯体長辺方向の長さを齟齬せしめ、同各PCケ
ーブルの少なくとも２箇所に、前記躯体の切欠部
内に臨む緊張定着部を設け、同部において相対す
るPCケーブルを互いに引寄せるように緊張する
ことを特徴とするコンクリート構造物に対するプ
レストレス導入方法に係るものである。 Conventionally, when introducing prestress into this type of structure using a PC cable,
After the PC cable 2 is tensioned and fixed to introduce prestress, the PC cable 2' is placed on the bottom plate 3 to introduce prestress. The anchoring part of the PC cable 2' overlaps the corner part, making it difficult to reinforce this part and making it difficult to perform stress analysis.
Additionally, the corners become structurally weak points. (See Figures 1 and 2) The present invention was proposed in order to eliminate these drawbacks, and it consists of a plurality of loop-shaped PC cables in a concrete structure so that adjacent PC cables overlap each other. At the same time, the lengths of the respective cables in the long side direction of the body are made to be inconsistent, and each PC cable is provided with tension fixing portions facing into the notch of the body in at least two places, and the opposing PC This invention relates to a method of introducing prestress into a concrete structure, which is characterized by tensioning cables so as to draw them together.
本発明においてはループ状のPCケーブルを使
用し、同各PCケーブルを夫々の相隣るPCケーブ
ルが互いにラツプするように配設し、同PCケー
ブルにおける少くとも２箇所に、躯体に欠截され
た切欠部に臨む緊張定着部を設け、同部において
ジヤツキにより相対するPCケーブルを互いに引
寄せるように緊張するものである。このように本
発明においてはループ状PCケーブルをその中間
部において相互に緊張するようにしたので緊張定
着部がコンクリート構造物の隅角部に集中するこ
とがなく、任意の点でPCケーブルを緊張するこ
とができる。 In the present invention, loop-shaped PC cables are used, and each PC cable is arranged so that adjacent PC cables overlap each other, and at least two places in the PC cable are cut out in the body. A tension fixing part is provided facing the cutout part, and the PC cables are tensioned in this part so as to pull opposing PC cables toward each other by means of a jack. In this way, in the present invention, since the loop-shaped PC cables are tensioned mutually at the middle part, the tension fixing parts are not concentrated at the corners of the concrete structure, and the PC cables can be tensioned at any point. can do.
また相隣る前記PCケーブルのラツプの度合を
調整することによつて、コンクリート躯体内に導
入されるプレストレスを調整しうるものである。 Furthermore, by adjusting the degree of wrap between the adjacent PC cables, the prestress introduced into the concrete frame can be adjusted.
また本発明においては、前記各ループ状PCケ
ーブルの躯体長辺方向の長さを齟齬せしめ、同長
辺方向の長さを任意にとることによつて、前記し
た相隣るPCケーブルのラツプ量を調整すること
と相俟つて、任意のプレストレスを躯体に導入し
うるものである。 In addition, in the present invention, the lengths of the loop-shaped PC cables in the long side direction of the body are made to be different, and the lengths in the same long side direction are set arbitrarily, so that the above-mentioned wrap amount of the adjacent PC cables can be adjusted. In conjunction with adjusting this, it is possible to introduce arbitrary prestress into the building frame.
更になお、構造物隅角部において交叉する両版
に跨つて、曲成されたループ状PCケーブルを配
設することによつて、前記隅角部に緊張定着用金
具が集中することなく、応力解析が明確になる。 Furthermore, by arranging the curved loop-shaped PC cable across the two plates that intersect at the corner of the structure, stress can be reduced without concentration of tension fixing fittings at the corner. The analysis becomes clearer.
以下本発明を図示の実施例について説明する。 The present invention will be described below with reference to the illustrated embodiments.
第４図に示すようにコンクリート構造物側壁１
１の内面下部に一双の切欠部１２，１２を設け、
同各切欠部よりループ状PCケーブル１３を側壁
１１内に挿入し、前記切欠部１２内においてPC
ケーブル１３の一端部１３ａを接続金物１４に定
着し、同一端部１３ａに対向するPCケーブル１
３の他端部１３ｂを接続金物１４に装架された緊
張ジヤツキ１５によつて緊張して接続金物１４に
定着し、かくして側壁１１内にプレストレスを導
入する。（第５図及び第６図参照）
前記ループ状PCケーブル１３は相隣るループ
状PCケーブル１３が一部ラツプするように配設
されている。また前記PCケーブル１３は側壁１
１の略々全高に亘つて配設され、残余のループ状
PCケーブル１３′は側壁１１の下半部にのみ配設
され、側壁１１下部の曲げモーメントが大きい場
合に対処している。従来このような場合、第３図
に示すように、側壁１に多数のPCケーブル２，
２′を配設し、側壁下半部を施工して下半部のPC
ケーブル２′を緊張する第１段施工と、同PCケー
ブル２′の緊張後、側壁上半部を施工してPCケー
ブル２を緊張する第２段施工とから構成されてい
るが、本方法によれば前記各ループ状PCケーブ
ル１３，１３′を同時に緊張、定着することによ
つて所期の目的を達成できる。 Concrete structure side wall 1 as shown in Figure 4
A pair of notches 12, 12 are provided at the lower part of the inner surface of 1,
The loop-shaped PC cable 13 is inserted into the side wall 11 through each notch, and the PC is inserted into the notch 12.
One end 13a of the cable 13 is fixed to the connecting hardware 14, and the PC cable 1 facing the same end 13a
The other end 13b of 3 is tensioned by a tensioning jack 15 mounted on the connecting hardware 14 and fixed to the connecting hardware 14, thus introducing prestress into the side wall 11. (See FIGS. 5 and 6) The loop-shaped PC cables 13 are arranged so that adjacent loop-shaped PC cables 13 partially overlap. Further, the PC cable 13 is connected to the side wall 1
1, and the remaining loop-shaped
The PC cable 13' is arranged only in the lower half of the side wall 11 to cope with the case where the bending moment at the lower part of the side wall 11 is large. Conventionally, in such a case, as shown in Fig. 3, a large number of PC cables 2,
2', construct the lower half of the side wall, and install the lower half of the PC.
The method consists of a first stage construction in which the cable 2' is tensioned, and a second stage construction in which the upper half of the side wall is constructed and the PC cable 2 is tensioned after the PC cable 2' is tensioned. Accordingly, the desired purpose can be achieved by simultaneously tensioning and fixing each of the loop-shaped PC cables 13, 13'.
第７図は本発明の他の実施例を示し、略々直角
に曲成されたループ状PCケーブル１３をコンク
リート構造物の隅角部において交叉する側壁１１
と底版１１′、若しくは他の側壁とに跨つて設し
て、前記実施例の場合と同様に緊張、定着して前
記側壁、底版にプレストレスを導入し、隅角部に
緊張定着金具が集中することなく、また応力解析
が明確になるようにするものである。 FIG. 7 shows another embodiment of the present invention, in which a loop-shaped PC cable 13 bent at a substantially right angle crosses a side wall 11 at a corner of a concrete structure.
and the bottom plate 11' or other side walls, and are tensioned and fixed in the same manner as in the above embodiment to introduce prestress to the side walls and the bottom plate, and the tension fixing fittings are concentrated at the corners. This makes the stress analysis clearer.
なお図中前記実施例と均等部分には同一符号が
附されている。 In the drawings, parts equivalent to those of the above embodiment are given the same reference numerals.
以上本発明を実施例について説明したが、本発
明は勿論このような実施例にだけ局限されるもの
ではなく、本発明の精神を逸脱しない範囲内で
種々の設計の改変を施しうるものである。 Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .
第１図は従来のプレストレス導入方法の一例を
示す斜面図、第２図はその隅角部の縦断面図、第
３図は従来のプレストレス導入方法の他の例を示
す左半部縦断正面図、第４図は本発明に係るコン
クリート構造物に対するプレストレス導入方法の
一実施例の実施状態を示す斜面図、第５図及び第
６図は夫々その緊張部の詳細を示す側面図並に正
面図、第７図は本発明の方法の他の実施例の実施
状態を示す斜面図である。
１１……側壁、１２……切欠部、１３，１３′
……ループ状PCケーブル、１４……接続金物、
１５……ジヤツキ。
Fig. 1 is a perspective view showing an example of the conventional prestress introduction method, Fig. 2 is a longitudinal cross-sectional view of a corner thereof, and Fig. 3 is a longitudinal cross-section of the left half showing another example of the conventional prestress introduction method. 4 is a front view, FIG. 4 is a slope view showing an implementation state of an embodiment of the method for introducing prestress into a concrete structure according to the present invention, and FIGS. 5 and 6 are side views and FIGS. 7 is a front view, and FIG. 7 is a perspective view showing another embodiment of the method of the present invention. 11... Side wall, 12... Notch, 13, 13'
...Loop-shaped PC cable, 14...Connection hardware,
15...I'm jealous.
Claims (1)
ーブルを、相隣る、PCケーブルが互いに重合す
るように配設するとともに、同各ケーブルの躯体
長辺方向の長さを齟齬せしめ、同各PCケーブル
の少なくとも２箇所に、前記躯体の切欠部内に臨
む緊張定着部を設け、同部において相対するPC
ケーブルを互いに引き寄せるように緊張すること
を特徴とするコンクリート構造物に対するプレス
トレス導入方法。 ２ コンクリート構造物における隅角部において
交差する両版に跨つて、曲成されたループ状PC
ケーブルを配設することを特徴とする特許請求の
範囲第１項に記載のコンクリート構造物に対する
プレストレス導入方法。[Scope of Claims] 1 A plurality of loop-shaped PC cables are arranged in a concrete frame so that adjacent PC cables overlap each other, and the lengths of the cables in the long side direction of the frame are made to be inconsistent. , each PC cable is provided with tension fixing parts facing into the cutout part of the body at least two places, and the facing PC in the same part is provided.
A method of introducing prestress into a concrete structure, which is characterized by tensioning cables so as to pull them together. 2 Curved loop-shaped PC across both slabs that intersect at the corner of a concrete structure
A method for introducing prestress into a concrete structure according to claim 1, which comprises arranging a cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15877482A JPS5948565A (en) | 1982-09-14 | 1982-09-14 | Introduction of prestress into concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15877482A JPS5948565A (en) | 1982-09-14 | 1982-09-14 | Introduction of prestress into concrete structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5948565A JPS5948565A (en) | 1984-03-19 |
| JPH0333878B2 true JPH0333878B2 (en) | 1991-05-20 |
Family
ID=15679042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15877482A Granted JPS5948565A (en) | 1982-09-14 | 1982-09-14 | Introduction of prestress into concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948565A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60246956A (en) * | 1984-05-18 | 1985-12-06 | 株式会社大林組 | Arrangement of pc steel material |
| JP2565232B2 (en) * | 1987-06-19 | 1996-12-18 | ソニー株式会社 | Table type stereoscopic imager |
| JP3117021B2 (en) * | 1990-12-27 | 2000-12-11 | 株式会社村田製作所 | Surface acoustic wave filter |
| JPH04249907A (en) * | 1990-12-27 | 1992-09-04 | Murata Mfg Co Ltd | Surface acoustic wave filter |
| JP5103784B2 (en) * | 2006-05-09 | 2012-12-19 | 株式会社大林組 | Concrete structure and prestressed concrete method |
| JP4847994B2 (en) * | 2008-10-17 | 2011-12-28 | 大成建設株式会社 | Construction method for prestressed concrete structures |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5572569A (en) * | 1978-11-24 | 1980-05-31 | Takenaka Komuten Co | Method of building with prestressed concrete |
| JPS58191869A (en) * | 1982-05-07 | 1983-11-09 | 大成建設株式会社 | Tensioning of pc cable |
-
1982
- 1982-09-14 JP JP15877482A patent/JPS5948565A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5572569A (en) * | 1978-11-24 | 1980-05-31 | Takenaka Komuten Co | Method of building with prestressed concrete |
| JPS58191869A (en) * | 1982-05-07 | 1983-11-09 | 大成建設株式会社 | Tensioning of pc cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5948565A (en) | 1984-03-19 |
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