JPS62284842A - Pc beam structure due to post tension system - Google Patents
Pc beam structure due to post tension systemInfo
- Publication number
- JPS62284842A JPS62284842A JP12579586A JP12579586A JPS62284842A JP S62284842 A JPS62284842 A JP S62284842A JP 12579586 A JP12579586 A JP 12579586A JP 12579586 A JP12579586 A JP 12579586A JP S62284842 A JPS62284842 A JP S62284842A
- Authority
- JP
- Japan
- Prior art keywords
- column
- concrete
- post
- steel
- steel material
- 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 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 28
- 239000004567 concrete Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 15
- 238000004873 anchoring Methods 0.000 description 8
- 206010016256 fatigue Diseases 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
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】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明は鋼管コンクリート柱に固着するポストテンショ
ン方式のＰＣ梁構造に関するものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a post-tensioned PC beam structure that is fixed to a steel pipe concrete column.
コンクリ−１・にプレストを付与した所謂プレストレス
トコンクリート
て、コンクリートにプレストレスを導入する方法には、
大別してプレテンシ１ン方式とポストテンシ１ン方式と
の二方式がある。前者はＰＣ鋼材を所定の引張力で緊張
しておき、そのまわりにコンクリートを打設し、コンク
リートの硬化後、ＰＣ鋼材の引張力を緩め、ＰＣ鋼材が
フンクリ−１・内で収縮しようとするのをＰＣ鋼材とコ
ンクリートとの付着力によって阻止し、コンクリートに
プレストレスを与えるのである。又後者においては、通
常シースを被せたＰＣｌ４材を型枠の中に配設し、打設
したコンクリ−１・が硬化した後説型し、コンクリート
を受台としてジヤツキでＰＣｌ４材を緊張してコンクリ
ートにプレストレスを与え、ＰＣｆｉ材の伸びが戻らな
いように定着して仕上げられるのである。なおＰＣ鋼材
を緊張し定着せしめた後、シース内にグラウトシてＰＣ
鋼材とコンクリートとの間に付着力を生ぜしめるととも
に、ＰＣ鋼材の腐食を防止するのが一般的であるが、グ
ラウトせずに、ＰＣｆｆ４材とコンクリートとの付着を
絶つ方式（アンボンド方式）もある。The method of introducing prestress into concrete is so-called prestressed concrete, in which prestress is applied to concrete.
Broadly speaking, there are two methods: a pre-tension method and a post-tension method. In the former method, the prestressing steel is kept under tension at a predetermined tensile force, concrete is poured around it, and after the concrete hardens, the tensile force on the prestressed steel is loosened, and the prestressed steel begins to contract inside Funkri-1. This is prevented by the adhesive force between the prestressing steel and the concrete, and prestress is applied to the concrete. In the latter case, the PCl4 material covered with a sheath is usually placed in the formwork, the cast concrete is hardened, and the PCl4 material is tensioned with jacks using the concrete as a support. By applying prestress to the concrete, the PCfi material is fixed and finished without returning to its elongation. After the PC steel material is tensioned and fixed, it is grouted into the sheath and the PC
Generally, it creates adhesion between steel and concrete and prevents corrosion of PC steel, but there is also a method (unbond method) that breaks the adhesion between PCff4 material and concrete without grouting. .
第２図はポストテンション方式によるＰＣ梁の製造方法
を示す正面図で、（１）は梁、（２）はシース、（３）
はＰＣ鋼材、（４）はジヤツキ、（５）はジヤツキ受台
、（６）は定着端である。Figure 2 is a front view showing the method of manufacturing a PC beam using the post-tension method, where (1) is the beam, (2) is the sheath, and (3) is the beam.
is a PC steel material, (4) is a jack, (5) is a jack holder, and (6) is a fixing end.
又第３図は構築物の柱にポストテンション方式のｐｃ梁
を装着した場合の仕口部構造を示す（＆）平面断面図と
（ｂ）側面断面図で、図中側は柱、α０はｐｃ梁、（支
）はシース、側はＰＣ鋼材、α４は定着具、叫はグリッ
ド筋、αｅはブラケット、面はパッド、（ト）は目地モ
ルタル、唾はジヤツキ支持台、翰はジヤツキである。Also, Figure 3 is a (&) plan cross-sectional view and (b) a side cross-sectional view showing the joint structure when post-tensioned PC beams are attached to the pillars of the structure, where the side in the figure is the column and α0 is the PC beam. The beam (support) is a sheath, the side is a PC steel material, α4 is a fixing tool, the wire is a grid line, αe is a bracket, the surface is a pad, (g) is joint mortar, the spit is a jack support, and the fence is a jack.
図においてシース（２）内にＰＣｊＷ材側を保持するＰ
Ｃ梁αυを、パッドαりを介して柱αｌのブラケット叩
上に載置し、予め柱のコンクリート内に保持されている
り−ス圓内に上記ｐｃ梁αυのＰＣ鋼材α３）を押通し
、その一端を定着具圓で柱α〔に固着する。In the figure, P holds the PCjW material side inside the sheath (2).
The C beam αυ is placed on the bracket of the column αl via the pad α, and the PC steel material α3) of the PC beam αυ is pushed through the beam circle previously held in the concrete of the column. One end of it is fixed to the pillar α with a fixing tool round.
次にＰＣ梁αυと柱ααとの接合部の目地モルタル（至
）の硬化を俟って、ジヤツキ（至）を作動して上記ＰＣ
鋼材Ｑ３１の定着具０毛で定着された反対側の端部を引
張り、ＰＣｔｌｌＩ材αりを緊張せしめた上、該ＰＣ鋼
材α３）をジヤツキ支持台頭に定着する。その後シース
（２）内にグラウティングを行い、ＰＣ鋼材（１３１を
コンクリートに付着せしめ、ｐｃ梁（Ｉｌｌの柱頭への
固着を完了する。Next, after hardening the joint mortar at the joint between the PC beam αυ and the column αα, the jack is operated to connect the PC
The end of the steel material Q31 on the opposite side fixed with the fixing tool 0 hair is pulled to tension the PCtllI material α, and then the PC steel material α3) is fixed on the jack support stand. After that, grouting is performed inside the sheath (2), and the PC steel material (131) is attached to the concrete, completing the fixing of the PC beam (Ill) to the column capital.
ところで上記ポストテンション方式式によるＰＣ梁構造
は、長期にわたる使用に対してもＰＣ鋼材の緊張力を一
定に保持することが重要である。このためには、ＰＣ鋼
材の定着端が強固であることが必要であり、第３図に示
すように柱が鉄筋コンクリート構造の場合にはグリッド
筋を配して定着端付近を補強している。しかし、グリッ
ド筋の配筋に手間がかかるとともに、定着端がコンクリ
ートであるため緊張力保持に対する信頼性は低い。By the way, in the above-mentioned post-tension type PC beam structure, it is important to maintain the tension of the PC steel material constant even during long-term use. For this purpose, it is necessary that the anchoring end of the PC steel material be strong, and as shown in FIG. 3, if the column has a reinforced concrete structure, grid bars are placed to reinforce the vicinity of the anchoring end. However, it takes time and effort to arrange grid reinforcement, and since the fixed ends are concrete, reliability in maintaining tension is low.
特にアンボンド方式の場合は、地震力等の繰り返し荷重
を受ける場合には定着端に大きな荷重がかかり、定着端
での疲労耐力が問題となる。はなはだしい場合は定着端
で疲労破壊を起こす危険性がある。Particularly in the case of the unbonded method, when subjected to repeated loads such as seismic force, a large load is applied to the anchoring end, and fatigue strength at the anchoring end becomes a problem. If it is too severe, there is a risk of fatigue failure at the fixing end.
本発明は上記ポストテンション方式による２０部材の問
題点を解消するためになされたもので、定着端での強度
上の信頼性が高いポストテンション方式式によるＰＣ構
造を提供しようとするものである。The present invention has been made to solve the problems of the 20 members using the post-tension method described above, and is intended to provide a PC structure using the post-tension method that is highly reliable in terms of strength at the fixing end.
上記目的を達成するため、柱に鋼管コンクリ−１・柱を
利用し、該鋼管コンクリート柱と梁との接合部において
、梁のＰＣ鋼材を鋼管コンクリート柱内を貫通して、梁
との接合部の反対側の鋼管外面に、定着具を介して定着
せしめる。In order to achieve the above purpose, a steel pipe concrete column 1 is used for the column, and at the joint between the steel pipe concrete column and the beam, the PC steel material of the beam is passed through the steel pipe concrete column and the joint with the beam is It is fixed to the outer surface of the steel pipe on the opposite side via a fixing device.
従来の鉄筋コンクリート柱にｐｃ梁を接合せしめる際、
ｐｃ梁のＰＣ鋼材の定着端は前記のように鉄筋コンクリ
ート柱の外面となる。従って梁に繰り返し荷重がかかる
と、定着端に繰り返し引張力がかかりコンクリートの定
着端は疲労破壊を起こす危険がある。しかし上記鋼管コ
ンクリート柱にあっては、鋼管外面が定着端となるため
、梁の繰り返し荷重による疲労耐力が大きく疲労破壊の
恐れはない。また、グリッド筋のような特別な補強の必
要もない。When joining a PC beam to a conventional reinforced concrete column,
The fixed end of the PC steel material of the PC beam becomes the outer surface of the reinforced concrete column as described above. Therefore, if a repeated load is applied to the beam, repeated tensile force will be applied to the anchoring end, and there is a risk that the anchoring end of the concrete will cause fatigue failure. However, in the case of the steel pipe concrete column, since the outer surface of the steel pipe serves as the anchoring end, the fatigue strength of the beam due to repeated loads is large and there is no fear of fatigue failure. Further, there is no need for special reinforcement such as grid reinforcement.
第１図は本発明の一実施例を示すポストテンション方式
のＰＣ梁構造の（ａｌは平面断面図、（ｂ）は側面断面
図で、図中（至）は鋼管コンクリート柱、（３１）はｐ
ｃ梁、（３２）はシース、（３３）はＰＣ鋼材、（３４
） 、 （３５）は定着具、（３６）はＰＣ鋼材の緊張
方向である。Figure 1 shows a post-tensioned PC beam structure showing an embodiment of the present invention (al is a plan sectional view, (b) is a side sectional view, (to) is a steel pipe concrete column, (31) is a side sectional view, p
C beam, (32) is sheath, (33) is PC steel material, (34
), (35) is the fixing device, and (36) is the tension direction of the PC steel material.
図に示すように、構築物等の柱に鋼管コンクリート柱（
至）を使用し、この柱（至）とポストテンシ３ン方式の
ｐｃ梁（３１）とを接合するのに、ｐｃ梁（３１）のＰ
Ｃ鋼材（３３）を柱と梁とのシース（３２）内を挿通せ
しめ、先ずその一端を柱０１の梁（３１）との接合部と
反対側の鋼管外面上に定着具（３４）を介し定着せしめ
、ついでＰＣ１ｌＩ材（３３）を矢印（３６）方向に引
張って緊張せしめた後、定着具（３５）を介してＰＣ鋼
材（３３）の他端を定着せしめる。その後必要に応じシ
ース（３２）内にグラウティングを行う。As shown in the figure, steel pipe concrete columns (
P of the PC beam (31) is used to connect this column (to) and the post tensile type PC beam (31).
The C steel material (33) is passed through the sheath (32) between the column and the beam, and first, one end of the C steel material (33) is placed on the outer surface of the steel pipe on the side opposite to the joint with the beam (31) of the column 01 via the fixing device (34). After fixing, the PC11I material (33) is tensed by pulling it in the direction of the arrow (36), and then the other end of the PC steel material (33) is fixed via the fixing tool (35). Thereafter, grouting is performed inside the sheath (32) if necessary.
本発明は構築物等の柱とポストテンション方式のｐｃ梁
との接合において、ｐｃ梁のＰＣ鋼材を柱を貫通させて
柱の鋼管外面上に定着せしめたので、ＰＣ梁にかかる繰
り返し荷重によるＰＣ鋼材定着端の疲労破壊が防止され
、ｐｃ鋼材の緊張力保持に対する信頼性の高いポストテ
ンシ１ン方式によるＰＣ梁の施工が可能となった。In the present invention, when joining a column of a structure etc. with a post-tensioned PC beam, the PC steel material of the PC beam is passed through the column and fixed on the outer surface of the steel pipe of the column. Fatigue fracture at the anchoring end is prevented, and it is now possible to construct PC beams using the post-tension method, which is highly reliable in maintaining the tension of PC steel materials.
第１図は本発明の一実施例を示すポストテンション方式
のＰＣ梁構造の（ａ）は平面断面図、（ｂ）は側面断面
図、第２図はポストテンシ曹ン方式によるＰＣ梁製造の
説明図、第３図は従来のポストテンション方式のＰＣ梁
構造の（＆）は平面断面図、（ｂ）は側面断面図である
。
図中ｅｌｌは鋼管コンクリート柱、（３１）はＰＣ梁、
（３２）はシース、（３３）はｐｃ鋼材、（３４） 、
（３５）は定着具、（３Ｂ）は緊張方向を示す矢印で
ある。
代理人 弁理士 佐 藤 正 年
第１図
［０）
３３“ Ｆ’Ｃ４岡４λ
３４．３５ 足噛罫
３６“緊５長方向を示す天ｒνFig. 1 shows an embodiment of the present invention, in which (a) is a plan sectional view of a post-tensioned PC beam structure, (b) is a side sectional view, and Fig. 2 shows a PC beam manufactured by a post-tensioned method. In the explanatory diagram, FIG. 3 is a plan sectional view (&) and a side sectional view (b) of a conventional post-tensioned PC beam structure. In the figure, ell is a steel pipe concrete column, (31) is a PC beam,
(32) is sheath, (33) is PC steel material, (34),
(35) is a fixing device, and (3B) is an arrow indicating the direction of tension. Agent Patent Attorney Tadashi Sato Figure 1 [0] 33"F'C4 Oka 4λ 34.35 Footprint 36" Ten rν indicating the length direction
Claims (1)
接合において、柱に鋼管コンクリート柱を使用し、上記
ＰＣ梁のＰＣ鋼材を梁と柱とを貫通せしめ、柱と梁との
接合部の反対側の鋼管外面上に、上記ＰＣ鋼材の両端を
定着具を介して定着せしめたことを特徴とするポストテ
ンション方式によるＰＣ梁構造。When connecting columns of structures, etc. with PC beams using the post-tension method, a steel pipe concrete column is used for the column, the PC steel material of the PC beam is passed through the beam and the column, and the opposite side of the joint between the column and beam is used. A PC beam structure using a post-tension method, characterized in that both ends of the above-mentioned PC steel material are fixed to the outer surface of the steel pipe via fixing devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12579586A JPS62284842A (en) | 1986-06-02 | 1986-06-02 | Pc beam structure due to post tension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12579586A JPS62284842A (en) | 1986-06-02 | 1986-06-02 | Pc beam structure due to post tension system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62284842A true JPS62284842A (en) | 1987-12-10 |
| JPH0441733B2 JPH0441733B2 (en) | 1992-07-09 |
Family
ID=14919068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12579586A Granted JPS62284842A (en) | 1986-06-02 | 1986-06-02 | Pc beam structure due to post tension system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62284842A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01182432A (en) * | 1988-01-14 | 1989-07-20 | Shimizu Corp | Compound structure of pillar and side beam |
| JPH05148897A (en) * | 1991-11-26 | 1993-06-15 | Kajima Corp | Joint structure of prestressed concrete beam and column structure |
| JPH05280092A (en) * | 1992-04-01 | 1993-10-26 | Kurosawa Kensetsu Kk | Joint construction of girder and pillar in prestressed concrete structure |
| JPH06264511A (en) * | 1993-03-15 | 1994-09-20 | Taisei Corp | Pressure joining work method for post and beam |
-
1986
- 1986-06-02 JP JP12579586A patent/JPS62284842A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01182432A (en) * | 1988-01-14 | 1989-07-20 | Shimizu Corp | Compound structure of pillar and side beam |
| JPH05148897A (en) * | 1991-11-26 | 1993-06-15 | Kajima Corp | Joint structure of prestressed concrete beam and column structure |
| JPH05280092A (en) * | 1992-04-01 | 1993-10-26 | Kurosawa Kensetsu Kk | Joint construction of girder and pillar in prestressed concrete structure |
| JPH06264511A (en) * | 1993-03-15 | 1994-09-20 | Taisei Corp | Pressure joining work method for post and beam |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0441733B2 (en) | 1992-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |