JPH0431939Y2 - - Google Patents
Info
- Publication number
- JPH0431939Y2 JPH0431939Y2 JP17043785U JP17043785U JPH0431939Y2 JP H0431939 Y2 JPH0431939 Y2 JP H0431939Y2 JP 17043785 U JP17043785 U JP 17043785U JP 17043785 U JP17043785 U JP 17043785U JP H0431939 Y2 JPH0431939 Y2 JP H0431939Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing plate
- unbonded
- formwork
- steel bar
- metal fitting
- 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 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000009415 formwork Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 11
- 239000011513 prestressed concrete Substances 0.000 claims 1
- 239000004567 concrete Substances 0.000 description 14
- 238000005056 compaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、アンボンドPC鋼棒用支圧板支持へ
こみ金具に関し、さらに詳しくは、ポストテンシ
ヨン方式のプレキヤストコンクリート（以下PC
という）部材であつて、アンボンドPC鋼棒およ
びその支圧板を予め型枠内に仮設しておいて、コ
ンクリートを打設する部材に用いる支圧板支持へ
こみ金具に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a bearing plate support recessed metal fitting for unbonded PC steel bars, and more specifically, to post-tension precast concrete (hereinafter referred to as PC
It relates to a bearing plate support recessed metal fitting used for a member in which an unbonded PC steel rod and its bearing plate are temporarily installed in a formwork and concrete is poured.
従来アンボンドPC鋼棒を用いるコンクリート
製品のコンクリート打設前に、支圧板を型枠に取
りつける構造は、第２図、第３図に示すようなも
のであつた。第２図は型枠１に取りつけたへこみ
金具２にマグネツト３を取りつけておき、このマ
グネツト３に支圧板４を吸着させた構造のもので
ある。第３図のものは、型枠１に取りつけた定着
ばね７に支圧板４を取りつけた構造である。
Conventionally, for concrete products using unbonded PC steel bars, a bearing plate is attached to the formwork before concrete placement, as shown in Figures 2 and 3. FIG. 2 shows a structure in which a magnet 3 is attached to a recessed metal fitting 2 attached to a formwork 1, and a bearing plate 4 is attracted to this magnet 3. The structure shown in FIG. 3 has a support plate 4 attached to a fixing spring 7 attached to a formwork 1.
以上のような従来の支圧板４の支持構造では、
アンボンドPC鋼棒５、PC鋼棒取付ボルト６をセ
ツトした後コンクリート１０を打設する際に、コ
ンクリート打設時のコンクリートの圧力や、コン
クリートの振動締め固めの際の振動などによつ
て、支圧板が動き、コンクリート硬化後、アンボ
ンドPC鋼棒に緊張ナツトを螺合して応力を導入
する際にPC鋼棒５と支圧板４との垂直度が失わ
れ、応力導入が不整合となるおそれがある。
In the conventional support structure of the bearing pressure plate 4 as described above,
When pouring concrete 10 after setting the unbonded PC steel bars 5 and PC steel bar mounting bolts 6, support may be affected by the pressure of the concrete at the time of concrete pouring, the vibrations during vibration compaction of concrete, etc. When the pressure plate moves and the concrete hardens, the perpendicularity between the PC steel bar 5 and the bearing plate 4 may be lost when stress is introduced by screwing a tension nut onto the unbonded PC steel bar, resulting in misalignment of stress introduction. There is.
本考案はこのような従来の問題点を解決するこ
とを目的とする。 The present invention aims to solve these conventional problems.
本考案は上記目的を達成するため、次の技術手
段により問題を解決した。
In order to achieve the above object, the present invention solves the problems through the following technical means.
円錐台状の外径を有するへこみ金具の大径端
に型枠外面に当接するフランジを取りつけると
共に、PC鋼棒の取付ボルトが着座する座を設
ける。 Attach a flange that contacts the outside surface of the formwork to the large-diameter end of the recessed metal fitting that has a truncated conical outside diameter, and provide a seat on which the mounting bolt of the PC steel bar will sit.
小径端にねじを設ける。このねじは支圧板を
前記座と平行に螺合する。 Provide a screw at the small diameter end. This screw screws the bearing plate parallel to the seat.
上記構成により本考案の支圧板を支持するへこ
み金具は次の作用をなす。
With the above configuration, the recessed metal fitting supporting the bearing pressure plate of the present invention has the following functions.
イ PC鋼棒と支圧板の垂直度が保たれ支圧板の
位置が打設コンクリートの圧力や締め固めの時
の振動によつて変形することがない。(b) The perpendicularity of the PC steel rod and bearing plate is maintained, and the position of the bearing plate is not deformed by the pressure of poured concrete or vibrations during compaction.
ロ 支圧板と支圧板支持具の装着はねじにより容
易に安定的に固着することができる。コンクリ
ート硬化後はねじを容易に脱着して、へこみ金
具を容易に取り去ることができる。(b) The bearing pressure plate and bearing plate support can be easily and stably fixed using screws. After the concrete has hardened, the screws can be easily removed and the recessed metal fittings can be easily removed.
第１図に本考案の実施例を示した。 FIG. 1 shows an embodiment of the present invention.
本考案のへこみ金具２は、その大径端にフラン
ジ２ａを有し、このフランジ２ａを型枠１の外面
に当接させて型枠１に取りつけられ、その小径端
すなわち型枠の内側の先端部にねじ２ｂを有し、
このねじ２ｂに支圧板４を螺合する。 The recessed metal fitting 2 of the present invention has a flange 2a at its large diameter end, is attached to the formwork 1 with this flange 2a in contact with the outer surface of the formwork 1, and is attached to the formwork 1 at its small diameter end, that is, at the inner tip of the formwork. has a screw 2b in the part,
The bearing pressure plate 4 is screwed onto this screw 2b.
一方、アンボンドPC鋼棒５はへこみ金具２の
中心部を通つて挿入され、その両端をPC鋼棒取
り付けボルト６によつて型枠１に固定される。こ
の時、PC鋼棒取り付けボルト６の頭部はへこみ
金具２の大径端の座２ｃに着座する。 On the other hand, the unbonded PC steel rod 5 is inserted through the center of the recessed metal fitting 2, and its both ends are fixed to the formwork 1 with PC steel rod attachment bolts 6. At this time, the head of the PC steel bar mounting bolt 6 is seated on the seat 2c at the large diameter end of the recessed metal fitting 2.
支圧板４とPC鋼棒取り付けボルトの座２Ｃと
は互いに平行になるようにへこみ金具２が形成さ
れているので、支圧板４の支圧面４ａとアンボン
ドPC鋼棒５とは直角に保たれている。コンクリ
ート打設後、PC鋼棒取り付けボルト６を取り外
し、へこみ金具２をフランジ２ａを捩じつて取り
外し、型枠１を取り除くと、へこみ管具の取り去
り跡の凹部にはアンボンドPC鋼棒５が残り、支
圧板４は支圧面４ａがPC鋼棒５と直角を保つて
コンクリート中に埋め込まれているので、アンボ
ンドPC鋼棒５に応力導入用の緊張ナツトを螺入
し、この緊張ナツトをインパクトレンチ等によつ
て締めて、応力導入すると、緊張ナツトは支圧板
４に密着する。 Since the recessed fittings 2 are formed so that the bearing plate 4 and the seat 2C of the PC steel bar mounting bolt are parallel to each other, the bearing surface 4a of the bearing plate 4 and the unbonded PC steel bar 5 are kept at right angles. There is. After pouring concrete, remove the PC steel bar attachment bolts 6, remove the recessed fittings 2 by twisting the flange 2a, and remove the formwork 1, and the unbonded PC steel rods 5 remain in the recess where the recessed fittings were removed. Since the bearing plate 4 is embedded in the concrete with the bearing surface 4a kept perpendicular to the PC steel rod 5, a tension nut for introducing stress is screwed into the unbonded PC steel rod 5, and this tension nut is tightened with an impact wrench. When the tension nut is tightened by means of a screw or the like and stress is introduced, the tension nut comes into close contact with the bearing pressure plate 4.
従つて、従来のように応力を導入したときに緊
張ナツトが支圧板に片当りする不都合がなくな
り、正規の応力状態を保つことができる。 Therefore, the problem of the tension nut hitting the bearing pressure plate unevenly when stress is introduced as in the conventional case is eliminated, and a normal stress state can be maintained.
ａ PC鋼棒と支圧板の垂直度を常に保つことが
でき、コンクリート打設時の圧力や締め固め時
の振動の影響を受けない。
a The perpendicularity of the PC steel rod and bearing plate can be maintained at all times, and it is not affected by the pressure during concrete pouring or the vibration during compaction.
ｂ 応力導入が正しく的確に行われる。b Stress introduction is performed correctly and accurately.
ｃ 安価簡単な構造であり、また繰り返し使用す
ることが可能である。c It has a simple and inexpensive structure and can be used repeatedly.
第１図は本考案の実施例の縦断面図、第２図、
第３図は従来の構造を示す断面図である。
１……型枠、２……へこみ金具（支持具）、３
……マグネツト、４……支圧板、５……アンボン
ドPC鋼棒、６……PC鋼棒取付ボルト、７……定
着ばね、１０……コンクリート。
FIG. 1 is a vertical cross-sectional view of an embodiment of the present invention, FIG.
FIG. 3 is a sectional view showing a conventional structure. 1... Formwork, 2... Dent fittings (supporting tools), 3
...Magnet, 4...Bearing plate, 5...Unbonded PC steel bar, 6...PC steel bar mounting bolt, 7...Fixing spring, 10...Concrete.
Claims (1)
リート型枠のアンボンドPC鋼棒用支圧板取り付
け金具において、円錐台状の外径を有するへこみ
金具の大径端に、型枠外面に当接するフランジを
取りつけると共にPC鋼棒の取付ボルトが着座す
る座を設け、前記へこみ金具の小径端には前記支
圧板を前記座と平行に螺合するねじを設けたこと
を特徴とするアンボンドPC鋼棒用支圧板支持具。 In the bearing plate mounting bracket for unbonded PC steel bars in post-tension prestressed concrete formwork, a flange that contacts the outside surface of the formwork is attached to the large-diameter end of the recessed metal fitting that has a truncated conical outer diameter, and the PC steel bar A bearing plate support for an unbonded PC steel bar, characterized in that a seat is provided on which a mounting bolt is seated, and a screw is provided at a small diameter end of the recessed metal fitting to threadably engage the bearing plate in parallel with the seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17043785U JPH0431939Y2 (en) | 1985-11-07 | 1985-11-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17043785U JPH0431939Y2 (en) | 1985-11-07 | 1985-11-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6279023U JPS6279023U (en) | 1987-05-20 |
| JPH0431939Y2 true JPH0431939Y2 (en) | 1992-07-31 |
Family
ID=31105167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17043785U Expired JPH0431939Y2 (en) | 1985-11-07 | 1985-11-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0431939Y2 (en) |
-
1985
- 1985-11-07 JP JP17043785U patent/JPH0431939Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6279023U (en) | 1987-05-20 |
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