JPH0242328B2 - - Google Patents
Info
- Publication number
- JPH0242328B2 JPH0242328B2 JP17676884A JP17676884A JPH0242328B2 JP H0242328 B2 JPH0242328 B2 JP H0242328B2 JP 17676884 A JP17676884 A JP 17676884A JP 17676884 A JP17676884 A JP 17676884A JP H0242328 B2 JPH0242328 B2 JP H0242328B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- steel bar
- cone
- plate
- steel
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- 238000009415 formwork Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000007796 conventional method Methods 0.000 description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
【発明の詳細な説明】
＜発明の目的＞
本発明はポストテンシヨン用のPC鋼棒をボツ
クスカルバート等のコンクリート製品中に埋込む
に際して、PC鋼棒を型枠に取付ける方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION <Object of the Invention> The present invention relates to a method for attaching a prestressed steel bar to a formwork when embedding the prestressed steel bar for post-tensioning into a concrete product such as a box culvert.
ポストテンシヨンはコンクリートにプレストレ
スを与える方法の１つで、例えば第４図に示すご
とく、コンクリート製品２０中にPC鋼棒１を埋
込んでおき、コンクリート硬化後反力板６を反力
にしてその引張端１ａを矢印Ａ方向に引張つた状
態でナツトで固定する。PC鋼棒１の抵抗端１ｂ
には抵抗板１４が螺着されているからPC鋼棒１
には反力板６と抵抗板１４の間に引張応力が生じ
るとともに、反力板６と抵抗板１４の間のコンク
リートに圧縮応力が生じる。 Post-tensioning is a method of applying prestress to concrete. For example, as shown in Figure 4, a PC steel rod 1 is embedded in a concrete product 20, and after the concrete hardens, a reaction plate 6 is used as a reaction force. Then, fix the tension end 1a with a nut while pulling it in the direction of arrow A. Resistance end 1b of PC steel bar 1
Since the resistance plate 14 is screwed to the PC steel rod 1
A tensile stress is generated between the reaction plate 6 and the resistance plate 14, and a compressive stress is generated in the concrete between the reaction plate 6 and the resistance plate 14.
PC鋼棒を第４図に示すごとくコンクリート製
品中に埋込むためには、従来第５図に示す方法で
PC鋼棒を型枠に取付けていた。すなわち、一方
のせき板にコーン２１をボルト２３により固定
し、コーン２１頂部の孔よりPC鋼棒１の引張端
１ａを挿入してナツト２２で固定するとともに、
反力板６をナツト先端に嵌着し、さらにストツパ
ー２７で固定する。PC鋼棒１の抵抗端１ｂには
あらかじめ抵抗板１４を螺着しておき、他方のせ
き板２６の孔からナツト２５を挿入し螺着固定す
る。しかしてPC鋼棒１はせき板２４，２６に固
定される。しかしこの方法の欠点は、PC鋼棒の
両端をナツトで螺着するため取付、脱型に手間が
かかり作業能率が悪いということであつた。本発
明はこの欠点を解消し、PC鋼棒の取付、また型
枠脱型の作業能率を改善するものである。 In order to embed PC steel rods in concrete products as shown in Fig. 4, the conventional method shown in Fig. 5 is used.
PC steel rods were attached to the formwork. That is, the cone 21 is fixed to one of the weir plates with bolts 23, and the tensile end 1a of the PC steel bar 1 is inserted through the hole at the top of the cone 21 and fixed with a nut 22.
The reaction plate 6 is fitted onto the tip of the nut and further fixed with a stopper 27. A resistance plate 14 is screwed in advance to the resistance end 1b of the PC steel bar 1, and a nut 25 is inserted through a hole in the other weir plate 26 and fixed by screwing. Thus, the PC steel rod 1 is fixed to the weir plates 24 and 26. However, the disadvantage of this method was that both ends of the PC steel bar were screwed together with nuts, which required time and effort to attach and remove from the mold, resulting in poor work efficiency. The present invention eliminates this drawback and improves the work efficiency of installing PC steel bars and demolding formwork.
＜発明の構成＞
本発明は、一方のせき板８内側に、截頭円錐形
金属で成りその頂部に奥方に向つてわずかに縮径
する穴３を有するコーン２を固定し、他方のせき
板１２の対向位置には孔１３を穿つておき、PC
鋼棒１の引張端１ａを、コーン２の穴３と相似の
外径を有し内部はPC鋼棒を抱持するごとく刳り
ぬいたゴムパツキン４で抱持してコーン２の穴３
に嵌着した後、せき板１２の孔１３から、先端部
に円筒形状の穴１１を有するゴムキヤツプ９を突
出させ、PC鋼棒１の抵抗端１ｂを穴１１に嵌着
することを特徴とするPC鋼棒の型枠取付方法で
ある。<Structure of the Invention> In the present invention, a cone 2 made of truncated conical metal and having a hole 3 whose diameter slightly decreases toward the back is fixed to the inside of one sheath plate 8, and the cone 2 is fixed to the inside of one sheath plate 8. A hole 13 is drilled at a position opposite to 12, and the PC
The tensile end 1a of the steel rod 1 is held by a rubber gasket 4 having a similar outer diameter to the hole 3 of the cone 2 and hollowed out inside to hold the PC steel rod.
After the PC steel rod 1 is fitted, a rubber cap 9 having a cylindrical hole 11 at its tip is projected from the hole 13 of the weir plate 12, and the resistance end 1b of the PC steel bar 1 is fitted into the hole 11. This is a method for installing PC steel bars into formwork.
以下図面を参照しつつ本発明をさらに詳細に説
明する。 The present invention will be explained in more detail below with reference to the drawings.
第１図は本発明方法によりPC鋼棒を型枠に取
付けた状態を示す切欠平面図、第２図は第１図の
右半分の側面図、第３図はゴムパツキンの拡大斜
視図である。 Fig. 1 is a cutaway plan view showing a PC steel rod attached to a formwork by the method of the present invention, Fig. 2 is a side view of the right half of Fig. 1, and Fig. 3 is an enlarged perspective view of a rubber seal.
コーン２は、第１図に示すごとく、截頭円錐形
の金属で成り、その頂部にはゴムパツキン４を嵌
着するための穴３がある。穴３はゴムパツキンの
嵌着の便のため奥方に向つてわずかに径が縮小し
ている。さらに穴３の周囲には反力板６を固定す
るためのマグネツト５が埋込まれている。コーン
２は一方のせき板８にボルト７により固定されて
いる。この固定方法は溶接でもよい。 As shown in FIG. 1, the cone 2 is made of metal in the shape of a truncated cone, and has a hole 3 at the top thereof into which a rubber packing 4 is fitted. Hole 3 has a diameter that decreases slightly toward the back to accommodate the fitting of the rubber gasket. Furthermore, a magnet 5 for fixing the reaction plate 6 is embedded around the hole 3. The cone 2 is fixed to one of the weir plates 8 with bolts 7. This fixing method may be welding.
ゴムパツキン４は、第３図に示すごとく、コー
ン２の穴３と相似の外径を有し、内部はPC鋼棒
を抱持するためこれとほぼ同一径で刳りぬかれて
いる。さらにPC鋼棒を抱持しやすいように一部
が２つ割りになつており、後端部には反力板を嵌
着するための薄肉部４ａが形成されている。 As shown in FIG. 3, the rubber gasket 4 has an outer diameter similar to that of the hole 3 of the cone 2, and the inside thereof is hollowed out with approximately the same diameter to hold the PC steel rod. Furthermore, a portion is split into two to make it easier to hold the PC steel rod, and a thin wall portion 4a for fitting a reaction plate is formed at the rear end.
他方のせき板１２の対向位置には抗１３が穿た
れている。孔１３の背面にはこれを挾むように一
対の固定板１５が溶接により垂設固定されてい
る。固定板１５はゴムキヤツプ９を固定するため
のものでピン穴１６が穿たれている。 A resistor 13 is bored in the opposite position of the other weir plate 12. A pair of fixing plates 15 are vertically fixed to the back surface of the hole 13 by welding so as to sandwich the plates. The fixing plate 15 is for fixing the rubber cap 9 and has pin holes 16 bored therein.
ゴムキヤツプ９は、先端部は截頭円錐形、後端
部は角柱形をなし、先端部１０にはPC鋼棒を嵌
着するための穴１１が、後端部には固定板１５に
固定するためのピン穴１７が設けられている。第
２図に示すごとくピン穴１７が長円形をしている
のは、ゴムキヤツプ９を引抜くとき、ピン穴１７
の後端に鈎を引掛けるためである。ゴムキヤツプ
９の機能はPC鋼棒の抵抗端１ｂを嵌着固定し、
さらにせき板１２の孔１３を塞げばよいのである
から、その外形は種々の形状が考えられ、せき板
への固定方法も種々の方法が考えられる。 The rubber cap 9 has a truncated cone shape at the tip and a prismatic shape at the rear end.The tip 10 has a hole 11 for fitting a PC steel rod, and the rear end is fixed to a fixing plate 15. A pin hole 17 is provided for this purpose. As shown in FIG. 2, the reason why the pin hole 17 is oval is that when the rubber cap 9 is pulled out,
This is for hooking the hook on the rear end of the hook. The function of the rubber cap 9 is to fit and fix the resistance end 1b of the PC steel rod.
Furthermore, since it is only necessary to close the hole 13 of the weir plate 12, various shapes can be considered for its external shape, and various methods can be considered for fixing it to the weir plate.
PC鋼棒の取付けに際しては、PC鋼棒１の引張
端１ａをゴムパツキン４で抱持し、さらに反力板
６を薄肉部４ａに嵌着する。一方PC鋼棒１の抵
抗端１ｂには抵抗板１４を螺着しておく。しかし
てゴムパツキン４をせき板８に固定されているコ
ーン２の穴３に押込むことにより嵌着し、PC鋼
棒１の引張端１ａを固定する。同時に反力板６は
マグネツト５の作用で確実に固定され、コンクリ
ート締固めの振動で離脱するおそれもない。しか
る後ゴムキヤツプ９の先端部１０をせき板１２の
孔１３から突出させて穴１１にPC鋼棒１の抵抗
端１ｂを嵌着し、戻止めとしてピン穴１６からピ
ン１８を差込めば、第１図に示すごとく、PC鋼
棒１はせき板８，１２間に完全に固定される。 When installing the PC steel rod, the tensile end 1a of the PC steel rod 1 is held by the rubber packing 4, and the reaction plate 6 is fitted into the thin wall portion 4a. On the other hand, a resistance plate 14 is screwed onto the resistance end 1b of the PC steel bar 1. The rubber packing 4 is then pushed into the hole 3 of the cone 2 fixed to the weir plate 8 and fitted, thereby fixing the tensile end 1a of the PC steel bar 1. At the same time, the reaction plate 6 is securely fixed by the action of the magnet 5, and there is no risk of it coming off due to vibrations during concrete compaction. After that, the tip 10 of the rubber cap 9 is projected from the hole 13 of the weir plate 12, the resistance end 1b of the PC steel bar 1 is fitted into the hole 11, and the pin 18 is inserted from the pin hole 16 as a detent. As shown in Figure 1, the PC steel bar 1 is completely fixed between the weir plates 8 and 12.
＜発明の効果＞
本発明はPC鋼棒の両棒の両端とも嵌着により
取付けるものであるから、従来方法のようにナツ
トをネジ込む必要がなく、型枠の脱型に際しても
ナツトを回してはずす必要がない。したがつて
PC鋼棒の取付および型枠の脱型の作業能率が大
幅に改善される。<Effects of the Invention> Since the present invention attaches both ends of the PC steel bar by fitting, there is no need to screw in nuts as in the conventional method, and it is not necessary to turn the nuts when demolding the formwork. There's no need to remove it. Therefore
The work efficiency of installing PC steel bars and demolding formwork is greatly improved.
第１図は本発明方法によりPC鋼棒を型枠に取
付けた状態を示す切欠平面図、第２図は第１図の
右半分の側面図、第３図はゴムパツキンの拡大斜
視図、第４図はPC鋼棒がコンクリート製品に埋
込まれた状態を示す切欠側面図、第５図は従来方
法によりPC鋼棒を型枠に取付けた状態を示す断
面図である。
１……PC鋼棒、２……コーン、３……穴、４
……ゴムパツキン、５……マグネツト、６……反
力板、８……せき板、９……ゴムキヤツプ、１０
……先端部、１１……穴、１２……せき板、１３
……孔、１４……抵抗板、１５……固定板、１６
……ピン穴、１７……ピン穴、１８……ピン、２
０……コンクリート製品。
Fig. 1 is a cutaway plan view showing a PC steel bar attached to a formwork by the method of the present invention, Fig. 2 is a side view of the right half of Fig. 1, Fig. 3 is an enlarged perspective view of the rubber seal, and Fig. 4 The figure is a cutaway side view showing a state in which a PC steel bar is embedded in a concrete product, and FIG. 5 is a sectional view showing a state in which a PC steel bar is attached to a formwork by a conventional method. 1...PC steel bar, 2...cone, 3...hole, 4
...Rubber gasket, 5 ... Magnet, 6 ... Reaction plate, 8 ... Weir plate, 9 ... Rubber cap, 10
... Tip, 11 ... Hole, 12 ... Weir plate, 13
... Hole, 14 ... Resistance plate, 15 ... Fixing plate, 16
...Pin hole, 17...Pin hole, 18...Pin, 2
0...Concrete product.
Claims (1)
りその頂部に奥方に向つてわずかに縮径する穴３
を有するコーン２を固定し、他方のせき板１２の
対向位置には孔１３を穿つておき、PC鋼棒１の
引張端１ａを、コーン２の穴３と相似の外径を有
し内部はPC鋼棒を抱持するごとく刳りぬいたゴ
ムパツキン４で抱持してコーン２の穴３に嵌着し
た後、せき板１２の孔１３から、先端部に円筒形
状の穴１１を有するゴムキヤツプ９を突出させ、
PC鋼棒１の抵抗端１ｂを穴１１に嵌着すること
を特徴とするPC鋼棒の型枠取付方法。1 Inside one of the weir plates 8, there is a hole 3 made of truncated conical metal whose diameter slightly decreases toward the back at its top.
A hole 13 is bored in the opposite position of the other weir plate 12, and the tensile end 1a of the PC steel bar 1 is fixed with a hole 13 having an outer diameter similar to that of the hole 3 of the cone 2, and a hole 13 having a similar outer diameter to the hole 3 of the cone 2, and a hole 13 formed in the opposing position of the other weir plate 12. After holding the PC steel rod with the hollowed-out rubber packing 4 and fitting it into the hole 3 of the cone 2, insert the rubber cap 9, which has a cylindrical hole 11 at the tip, through the hole 13 of the weir plate 12. Make it stand out,
A method for attaching a PC steel bar to a formwork, the method comprising fitting a resistance end 1b of a PC steel bar 1 into a hole 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17676884A JPS6154907A (en) | 1984-08-27 | 1984-08-27 | Method of mounting formwork for pc steel rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17676884A JPS6154907A (en) | 1984-08-27 | 1984-08-27 | Method of mounting formwork for pc steel rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6154907A JPS6154907A (en) | 1986-03-19 |
| JPH0242328B2 true JPH0242328B2 (en) | 1990-09-21 |
Family
ID=16019480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17676884A Granted JPS6154907A (en) | 1984-08-27 | 1984-08-27 | Method of mounting formwork for pc steel rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6154907A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0438966Y2 (en) * | 1986-04-14 | 1992-09-11 | ||
| JPS62268610A (en) * | 1986-05-16 | 1987-11-21 | 旭コンクリ−ト工業株式会社 | Concrete block and manufacture thereof |
| JP6435115B2 (en) * | 2014-05-08 | 2018-12-05 | 大成建設株式会社 | Prestressed member manufacturing method |
-
1984
- 1984-08-27 JP JP17676884A patent/JPS6154907A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6154907A (en) | 1986-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5813185A (en) | Spacer reciever for a wall form tie rod | |
| US3605361A (en) | Tendon anchorage | |
| US3762027A (en) | Method of post-tensioning prestressed concrete | |
| US3895879A (en) | Combined post tensioning anchor and cable | |
| US3843288A (en) | Tendon anchorage with threaded support element | |
| JPH0242328B2 (en) | ||
| JPH0978991A (en) | Connecting bolt receiving space forming means | |
| JP2554281Y2 (en) | Montage top | |
| JPH0447047A (en) | Method for connecting precast column and precast girder | |
| JP2564065Y2 (en) | Screw hole forming device for concrete members | |
| JPH0577816B2 (en) | ||
| JPS6042083Y2 (en) | Anchored end structure of tensile steel material | |
| US3521644A (en) | Anchor block assembly | |
| JPH0734117U (en) | Assembly type embedded fixing body | |
| JPS634764Y2 (en) | ||
| JPH09329123A (en) | Fastener | |
| JPH0232409Y2 (en) | ||
| JPH0213604Y2 (en) | ||
| JPS5920505Y2 (en) | Anchor | |
| JPH0427615Y2 (en) | ||
| JPH09203125A (en) | Connection structure of concrete member | |
| JPH0687115A (en) | Hole-forming device for concrete product by suspension reversing | |
| JPH0431939Y2 (en) | ||
| JPH07127691A (en) | Connector for steel strand | |
| JPH05133412A (en) | Setting device for rod-shaped body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |