JPS62129463A - Reinforcing steel bar mount structure of pc steel material anchoring part - Google Patents
Reinforcing steel bar mount structure of pc steel material anchoring partInfo
- Publication number
- JPS62129463A JPS62129463A JP26979485A JP26979485A JPS62129463A JP S62129463 A JPS62129463 A JP S62129463A JP 26979485 A JP26979485 A JP 26979485A JP 26979485 A JP26979485 A JP 26979485A JP S62129463 A JPS62129463 A JP S62129463A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing
- bar
- concrete
- fixing
- buried
- 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
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Reinforcement Elements For Buildings (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】
「産業上の利用分野」
本発明は、プレストレストコンクリート構造物をボスト
テンション方式にて型枠成形する際に、その型枠内に配
設される各種補強筋のうち、ＰＣ鋼材定着具直下のコン
クリート内に埋設されるように配される定着部用補強筋
の取り付け構造に関するものである。Detailed Description of the Invention "Industrial Application Field" The present invention is directed to the reinforcement bars installed in the formwork when forming a prestressed concrete structure using the boss tension method. This invention relates to a structure for attaching reinforcing bars for anchoring parts that are buried in concrete directly below a PC steel anchor.
「従来の技術」
プレストレストコンクリートは、いわゆるＰＣ鋼材によ
ってコンクリートに圧縮応力を与えたしのであって、コ
ンクリートの引張強度の不足を補い、設計荷重範囲内で
は引Ｉ最に対しても圧縮に対してら同じ力学的性質を確
保し、かっひびわれの生じない構造かできることから、
近年においては、梁や床版などの乙種コンクリート構造
物に広く適用されている。``Prior art'' Prestressed concrete applies compressive stress to concrete using a so-called PC steel material, and compensates for the lack of tensile strength of concrete. Because it ensures the same mechanical properties and creates a structure that does not cause cracks,
In recent years, it has been widely applied to Class B concrete structures such as beams and floor slabs.
このようなプレストレストコンクリート構造物は、場所
打ち及び工場生産のいずれにしても型枠成形にて形成さ
れるが、その際、コンクリートを打設する前に予め、プ
レストレス導入用のＰＣ′Ａ４材や各種補強筋を配設し
ておく必要がある。特に、ボストテンション方式にてプ
レストレスを導入オろ場合、ＰＣｊｌｉ［Ｉｊオ定着具
直下のコンクリートには大きな圧縮応力が集中するため
、この部分にいわゆる割裂補強筋などと称されている定
着部用補強筋が埋設されるように配設しておく必要かあ
る。Such prestressed concrete structures are formed by molding, whether cast in place or manufactured in a factory. It is necessary to install various reinforcing bars. In particular, when prestress is introduced using the boss tension method, large compressive stress concentrates on the concrete directly below the PCJI/IJO anchorage. Is it necessary to arrange the reinforcement so that it is buried?
「発明か解決しようとずろ問題点」
ところが、このような定着部用補強筋を、型枠内の定位
値に予め配設しておく場合、同位置の中央にはＰＣ！ｊ
ｌ材をまず配置し、さらに緊張端側の定着具が埋め込み
タイプであればその定着具も配設しておかなければなら
ないため、該定着部用補強筋を所定位置にセットするの
が困難となる場合が多く、このような場合には、その定
着部用補強筋を上から吊り下げたり、セット用補助筋を
近くまで延在させてきてこれに固定したりする方法など
を採っていたが、手間がかかるうえに精度よく配置でき
ないという問題点があった。``This is a problem that cannot be solved by invention.'' However, when such reinforcing bars for the anchoring part are placed in advance at a fixed position within the formwork, there is a PC in the center of the same position! j
If the anchoring device on the tension end side is an embedded type, the anchoring device must also be installed, which makes it difficult to set the reinforcing bar for the anchoring part in the specified position. In such cases, methods such as suspending reinforcing bars for the anchorage section from above or extending auxiliary reinforcing bars for setting nearby and fixing them thereto have been adopted. However, there were problems in that it was time-consuming and difficult to arrange with high precision.
「問題点を解決するための手段」
そこで、本発明では、プレストレスを導入すべきコンク
リート構造物の端面に埋設されて使用されるＰＣ鋼材用
定着具の本体部内面側に突出部を設け、この突出部に、
定着具直下のコンクリート内に埋設ケるための定石部用
補強筋を、該突出部の周りに嵌合さＵて装着し１口取付
筋を介して取０付（）ろ構造としたらのである。"Means for solving the problem" Therefore, in the present invention, a protrusion is provided on the inner surface side of the main body of a fixing device for PC steel that is used by being buried in the end face of a concrete structure to which prestress is to be introduced. In this protrusion,
A reinforcing bar for the set stone part, which is to be buried in the concrete directly under the anchor, is fitted around the protruding part and attached via a single-hole mounting bar. .
ここで、前記突出部の周りに嵌合さＵて装着す取り付け
筋としては、配設すべき定着部用ｈ）１強筋の形態によ
り、それ自体単独構成としたり、該取り付け筋と補強筋
の双方を一つの連続する鉄筋で一体に構成したりするの
が望ましい。Here, depending on the form of the anchoring section h) 1 reinforcing bars to be provided, the attachment bars that are fitted around the protruding portion and attached thereto may be constructed independently, or may be constructed by themselves alone or together with the attachment bars and reinforcing bars. It is desirable to construct both of them integrally with one continuous reinforcing bar.
「作用 」
定着部用補強筋は、定着具の本体部内面側の突出部に取
付筋を介して取り付けられるか、取付筋は突出部外周に
嵌合させて取り付ける構造となっているので、その作業
がきわめて容易となり、また定着具自体が基準となるの
で、定着部用補強筋の配設を精度良く行える。``Function'' The reinforcing bar for the fixing part is attached to the protrusion on the inner surface of the main body of the fixing device via the attachment bar, or the attachment bar is attached by fitting into the outer periphery of the protrusion. The work becomes extremely easy, and since the fixing tool itself serves as a reference, the reinforcing bars for the fixing portion can be placed with high precision.
「実施例」 以下、本発明を図面に示す実施例に基づいて説明する。"Example" Hereinafter, the present invention will be explained based on embodiments shown in the drawings.
第１図ないし第５図は、本発明の一実施例を示すもので
、これらの図において、符号１は、ボストテンション方
式にてプレストレスを導入する際に適用されるキャステ
ィングタイプの緊張端用定着具である。この定着具１は
、プレストレス導入時にコンクリートに対する支圧板を
兼ねる厚肉の本体部２と、この本体部２の内面２ａ側に
、該本体部２と同軸的に突設された突出部３と、これら
の中心をその軸線方向に貫通するｐｃｗ材挿通挿通孔４
備えている。前記突出部３の外周面は、その先端部に形
成された小径筒状部３ａに向かうに従い小径となるアー
ム部に形成されている。さらに、この本体部２の外周面
であって前記本体部２に近接した位置にはフランジ部４
が形成され、これによって該フランジ部４と本体部２と
の間には円形首部５が形成されている。Figures 1 to 5 show one embodiment of the present invention, and in these figures, reference numeral 1 denotes a casting type tension end type applied when introducing prestress using the boss tension method. It is a fixing tool. This fixing tool 1 includes a thick main body part 2 which also serves as a bearing plate for concrete when prestressing is introduced, and a protrusion part 3 coaxially provided with the main body part 2 on the inner surface 2a side of the main body part 2. , a PCW material insertion hole 4 passing through the center of these in the axial direction.
We are prepared. The outer circumferential surface of the protruding portion 3 is formed into an arm portion whose diameter becomes smaller toward a smaller diameter cylindrical portion 3a formed at the tip thereof. Further, a flange portion 4 is provided on the outer peripheral surface of the main body portion 2 at a position close to the main body portion 2.
is formed, whereby a circular neck portion 5 is formed between the flange portion 4 and the main body portion 2.
そして、この実施例では、前記定着具Ｉの直下における
コンクリートに埋設すべき定着部用補強筋６は、前記突
出部３の首部５に装着される一対の取付筋７．８を介し
てその定着具ｌに取り付けられ、型枠内の所定位置に配
設される。該取付筋７．８は、それぞれについて、前記
円形首部５を挟みつける形態でそこへ嵌まり込むように
円弧状に曲げ形成された対構成の嵌合部７ａ、７ａ及び
８ａ、８ａと、補強筋６が取り付けられるアーム部７ｂ
、 ８ｂとを打する構成となっている。取付筋７．８の
アーム部７ｂ、８ｂは、嵌合部に対してほぼ９０度曲げ
られ、その袋打状態においては図示例の如＜ｐｃｉ材用
挿通孔３の軸線と平行にのび、該挿通孔３と同軸的に配
設されるシース管などと相互干渉することのないように
配慮されている。なお、面記ｈｌｉ強筋６は、アーム部
７ｂ、８ｂに対して例えば緊結等の通常手段により固定
されろ。In this embodiment, the anchorage reinforcing bars 6 to be buried in the concrete immediately below the anchoring device I are anchored via a pair of attachment bars 7.8 attached to the neck portion 5 of the protrusion 3. It is attached to the tool l and placed at a predetermined position within the formwork. The attachment bars 7.8 each have a pair of fitting portions 7a, 7a and 8a, 8a bent into an arc shape so as to fit into the circular neck portion 5 in such a manner as to sandwich the same, and a reinforcing portion. Arm portion 7b to which the muscle 6 is attached
, 8b. The arm portions 7b and 8b of the mounting bar 7.8 are bent approximately 90 degrees with respect to the fitting portion, and in the double-strike state, they extend parallel to the axis of the PCI material insertion hole 3 as shown in the illustrated example. Care is taken to avoid mutual interference with a sheath tube or the like disposed coaxially with the insertion hole 3. Note that the hli reinforcement 6 is fixed to the arm portions 7b, 8b by ordinary means such as tightening.
定着部用）＋ｌｉ強筋をこのような取付構造としｆ二場
合、その取り付け作業がきわめて容易となろうえに、取
り付け精度ら晋しく向上する。即ち、取付筋７．８はそ
れぞれその嵌合部７ａ、 ８ａ’、＜ｊｌｉに円形首部
５に嵌合させるだけで定着具ｌに取付けられるので、こ
の取付筋７．８をＪｋ亭としてこれに定着部用１ｌｌｉ
強筋６を緊結等の手段にて単に取付ければ良く、その作
業がきわめて容易ならのとなる。If the reinforcement (for the fixing part) is constructed with such a mounting structure, the mounting work will be extremely easy, and the mounting accuracy will be improved in a simple manner. That is, since the mounting strips 7.8 can be attached to the fixing tool l simply by fitting the fitting portions 7a, 8a' and 1lli for fixing section
It is sufficient to simply attach the reinforcing bars 6 by means of tightening or the like, and this becomes possible if the work is extremely easy.
しから、このように取付筋は定着具に装着されていろの
で、必然的に定着部用補強筋６の取付け精度、つまり定
着部用補強筋の配設位置の精度も向上する。Therefore, since the attachment bars are attached to the fixing tool in this way, the accuracy of attaching the fixing section reinforcing bars 6, that is, the accuracy of the arrangement position of the fixing section reinforcing bars 6, is inevitably improved.
第６図は本発明の他の実施例を示す乙のである。FIG. 6 shows another embodiment of the present invention.
この実施例では、コンクリート内に埋設するための定着
部用補強筋ＩＯを螺旋状とする場合に好適な取付け構造
例を示したものであって、その螺旋状となった定着部用
補強筋１０の一端側に、それよりら小径でかつ同軸的に
延びる螺旋状の取付筋１１部分を一体に形成すると共に
、この取付筋１１部分を、定着具ｌの小径筒状部３ａ部
分に外嵌さ仕て取り付ける構造としたものである。This embodiment shows an example of a suitable mounting structure when the reinforcing bar IO for the anchoring part to be buried in concrete is formed into a spiral shape. A spiral mounting strip 11 portion having a smaller diameter and coaxially extending from the one end side is integrally formed, and the mounting strip 11 portion is externally fitted onto the small diameter cylindrical portion 3a of the fixing tool l. It has a structure that allows it to be attached to the front.
このようにすると、定着部用補強筋１０の取付作業性及
び取付精度のいずれを乙さらに向上させることができ、
かつ低コスト化も図ることができろ。In this way, it is possible to further improve both the installation workability and the installation accuracy of the reinforcing bar 10 for the anchorage part,
And it should also be possible to reduce costs.
「発明の効果」
以上説明したように、本発明にあっては、プレストレス
を導入すべきコンクリート構造物の端面に埋設されて使
用されるＰＣ鋼材用定着具の本体部内面側に突出部を設
け、この突出部に、定着具直下のコンクリート内に埋設
するための定着部用ｈｌｉ強筋を、該突出部の周りに嵌
合さＵ“で装着した取付筋を介して取り付けた構造とし
１こので、足台部用補強筋を目的とする所定の位置に容
易にしかも精度良く配設して取り付けることかでき、こ
れに上って低コスト化さらにはプレストレストコンクリ
ート構造物ないし製品の品質向上なとを図り得るといっ
た優れた効果を奏する。"Effects of the Invention" As explained above, in the present invention, a protrusion is provided on the inner surface of the main body of a fixing device for PC steel that is used by being buried in the end face of a concrete structure to which prestress is to be introduced. The structure is such that an hli reinforcing bar for the fixing part to be buried in the concrete directly below the fixing device is attached to this protruding part via a mounting bar fitted around the protruding part with a U". With this, the reinforcing bars for the footrest can be easily and accurately arranged and attached to the desired predetermined position, which further reduces costs and improves the quality of prestressed concrete structures and products. It has excellent effects such as being able to achieve the following effects.
第１図ないし第５図は本発明の一実施例を示すしので、
第１図は斜視図、第２図は平面図、第３図は取付筋を９
０度回転さけた状部の側面図、第４図は第３図のＩＶ、
−ＩＶ線にそう断面図、第５図は取付筋の斜視図、第６
図は本発明の他の実施例を示す平面図である。
ｌ・・・定着具、２・・・本体部、３・・突出部、６、
ＩＯ・・・定着部用補強筋、７．８．１１・・取付筋。1 to 5 show one embodiment of the present invention,
Figure 1 is a perspective view, Figure 2 is a plan view, Figure 3 shows the mounting bars at 9
A side view of the shaped part rotated by 0 degrees, Figure 4 is IV of Figure 3,
- A cross-sectional view taken along line IV, Figure 5 is a perspective view of the mounting bar, Figure 6 is a perspective view of the mounting bar.
The figure is a plan view showing another embodiment of the present invention. l...Fixing tool, 2...Main body part, 3...Protrusion part, 6,
IO...Reinforcement bar for anchorage part, 7.8.11...Attachment bar.
Claims (2)
端面に埋設されて使用されるＰＣ鋼材用定着具の本体部
内面側に突出部を設け、この突出部に、定着具直下のコ
ンクリート内に埋設するための定着部用補強筋を、該突
出部の周りに嵌合させて装着した取付筋を介して取り付
けてなるＰＣ鋼材定着部の補強筋取り付け構造。(1) A protrusion is provided on the inner surface of the main body of a fixing device for PC steel that is used by being buried in the end face of a concrete structure where prestressing is to be introduced, and the fixing device is buried in the concrete directly below the protruding portion. A reinforcing bar attachment structure for a PC steel fixing part, in which a reinforcing bar for the fixing part is attached via an attachment bar fitted and attached around the protrusion.
構成されていることを特徴とする特許請求の範囲第１項
記載のＰＣ鋼材定着部の補強筋取り付け構造。(2) The reinforcing bar attachment structure for a PC steel fixing part according to claim 1, wherein the attaching bar and the fixing part reinforcing bar are constituted by continuous reinforcing bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26979485A JPS62129463A (en) | 1985-11-30 | 1985-11-30 | Reinforcing steel bar mount structure of pc steel material anchoring part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26979485A JPS62129463A (en) | 1985-11-30 | 1985-11-30 | Reinforcing steel bar mount structure of pc steel material anchoring part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62129463A true JPS62129463A (en) | 1987-06-11 |
| JPH0549790B2 JPH0549790B2 (en) | 1993-07-27 |
Family
ID=17477251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26979485A Granted JPS62129463A (en) | 1985-11-30 | 1985-11-30 | Reinforcing steel bar mount structure of pc steel material anchoring part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62129463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016132877A (en) * | 2015-01-16 | 2016-07-25 | 株式会社長谷工コーポレーション | Reinforcing bar material for preventing splitting of tension end of prestressing steel wire, and reinforcing bar using the same |
-
1985
- 1985-11-30 JP JP26979485A patent/JPS62129463A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016132877A (en) * | 2015-01-16 | 2016-07-25 | 株式会社長谷工コーポレーション | Reinforcing bar material for preventing splitting of tension end of prestressing steel wire, and reinforcing bar using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0549790B2 (en) | 1993-07-27 |
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