JPH0128125Y2 - - Google Patents
Info
- Publication number
- JPH0128125Y2 JPH0128125Y2 JP1983187761U JP18776183U JPH0128125Y2 JP H0128125 Y2 JPH0128125 Y2 JP H0128125Y2 JP 1983187761 U JP1983187761 U JP 1983187761U JP 18776183 U JP18776183 U JP 18776183U JP H0128125 Y2 JPH0128125 Y2 JP H0128125Y2
- Authority
- JP
- Japan
- Prior art keywords
- pile
- connecting pipe
- head
- footing
- concrete pile
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000011440 grout Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、PC又はRCコンクリート杭の打込後
における杭頭とフーテイングとの連結構造に関す
るものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a connection structure between a pile cap and footing after driving a PC or RC concrete pile.
コンクリート杭の頭部周囲にフーテイングを造
成する場合、従来はコンクリート杭を打ち込んだ
後、最上段位置にある上杭の頭部を所望高さで切
断し、更に内部の主鉄筋を露出させ、杭頭部を整
形した後、これらの主鉄筋及び杭頭部を包むよう
にフーテイングを造成していた。
When creating a footing around the head of a concrete pile, conventionally, after driving the concrete pile, the head of the top pile at the top level is cut off at the desired height, and the main reinforcing bar inside is exposed. After shaping the head, footings were created to wrap around the main reinforcing bars and the pile head.
しかし、コンクリート杭の全長を最大限に利用
する場合や、打ち込みにより杭頭部や主鉄筋が破
損した場合には、杭内の主鉄筋をフーテイングと
の係合用鉄筋として利用することができないとい
つた問題点があつた。
However, when maximizing the full length of a concrete pile, or when the pile head or main reinforcing bar is damaged during driving, the main reinforcing bar inside the pile cannot be used as the reinforcing bar for engagement with the footing. A problem arose.
本考案は、かかる場合に最適なもので、その要
旨は、コンクリート杭の頭部に中央を薄肉部とし
た円筒状連結管を嵌装して固定し、該連結管の上
部の周囲にフーテイングとの係合用鉄筋を適宜数
溶接するとゝもに、連結管の存在する範囲でフー
テイングを造成することを特徴としたコンクリー
ト杭頭とフーテイングとの連結構造にある。
The present invention is ideal for such cases, and its gist is to fit and fix a cylindrical connecting pipe with a thin wall in the center to the head of a concrete pile, and to attach a footing around the top of the connecting pipe. The connecting structure between the concrete pile cap and the footing is characterized by welding an appropriate number of reinforcing bars for engagement, and creating the footing in the area where the connecting pipe exists.
以下、本考案を第１図乃至第３図に示す実施例
に基づいて詳細に説明すると、図において１は打
ち込みが終わつたPC又はRCコンクリート杭、い
わゆる上杭であり、２は本考案に係る上下に開口
した円筒状の連結管である。
Hereinafter, the present invention will be explained in detail based on the embodiments shown in Figs. 1 to 3. In the figures, 1 is a PC or RC concrete pile that has been driven, a so-called upper pile, and 2 is a concrete pile according to the present invention. It is a cylindrical connecting pipe that opens at the top and bottom.
連結管２の中央は薄肉部２ａで形成され、他方
その上下両端は厚肉部２ｂ，２ｂで形成されてい
る。 The center of the connecting pipe 2 is formed by a thin wall portion 2a, and the upper and lower ends thereof are formed by thick wall portions 2b, 2b.
この肉厚は、例えば300φのコンクリート杭を
使用した時、薄肉部２ａで約６mm、厚肉部２ｂ，
２ｂで12mm程度で良いことが解析の結果分かつて
いる。 For example, when using a concrete pile of 300φ, the wall thickness is approximately 6 mm at the thin wall portion 2a, and approximately 6 mm at the thick wall portion 2b.
Analysis has shown that 12mm is sufficient for 2b.
連結管２の中央に、このように薄肉部２ａを形
成したのは、連結管２に曲げモーメントが作用す
る場合、その両端が大きくなり、しかも、水平力
作用時にテコ反力が作用するが故に、両端のみ強
度を大きくして、材料の削減、軽量化等を図ると
ともに、ここを弾性変形させて地震時に作用する
水平力が直接的に杭１に作用することを防止し、
しかも、終局的においてここを降伏させて杭１の
応力を低減させるためである。なお、この連結管
２は、鋼板等を巻いてその接合部を溶接又は鋲止
めにし、更にその上下両端のみを二重あるいは三
重に巻き付けて形成しても良い。 The reason why the thin wall portion 2a is formed in the center of the connecting pipe 2 is because when a bending moment acts on the connecting pipe 2, both ends become large, and when a horizontal force is applied, a lever reaction force acts. , the strength is increased only at both ends to reduce the amount of material and weight, and this is elastically deformed to prevent the horizontal force that acts during an earthquake from directly acting on the pile 1.
Moreover, this is to ultimately yield the pile 1 and reduce the stress on the pile 1. The connecting pipe 2 may be formed by winding a steel plate or the like, welding or riveting the joints, and further wrapping only the upper and lower ends in a double or triple manner.
連結管２の内径は、上記コンクリート杭１の頭
部に嵌装しうる大きさとし、また高さは後述する
フーテイング５と杭１との係合に充分な大きさ、
例えば杭径の1.5〜2.5倍程度の長さとする。 The inner diameter of the connecting pipe 2 is large enough to fit into the head of the concrete pile 1, and the height is large enough to engage the footing 5 and the pile 1, which will be described later.
For example, the length should be about 1.5 to 2.5 times the pile diameter.
３はフーテイング５との係合用鉄筋で、先端を
Ｕ字形に丸めたものを上記連結管２の上部の内外
周に夫々適宜数、例えば６本〜８本づつその基部
を等間隔で溶接したものである。 Reference numeral 3 denotes reinforcing bars for engagement with the footing 5, the ends of which are rounded into a U-shape, and the bases of which are welded to the inner and outer peripheries of the upper part of the connecting pipe 2 in an appropriate number, for example 6 to 8, at equal intervals. It is.
この鉄筋３は、連結管２を杭頭に嵌装した後に
溶接しても良いが、予め工場で連結管２を製作し
た後溶接するようにすれば、多量に且つ品質が均
一のものが得られる。また鉄筋３は、連結管２の
内周及び外周の双方又はどちらか一方に設けるよ
うにしても良く、双方に設けた場合、この間隔を
一定に保持する上で好ましいばかりでなく、内面
の係合用鉄筋３が杭１の頭部上面に接触して、こ
の設置が正確に行われうることになる。 The reinforcing bars 3 may be welded after the connecting pipe 2 is fitted to the pile cap, but if the connecting pipe 2 is manufactured in advance at a factory and then welded, a large quantity and uniform quality can be obtained. It will be done. Further, the reinforcing bars 3 may be provided on both or one of the inner and outer peripheries of the connecting pipe 2. When provided on both sides, it is not only preferable to maintain a constant spacing, but also to prevent The combined reinforcing bars 3 come into contact with the upper surface of the head of the pile 1, and this installation can be performed accurately.
４は無収縮のグラウト等の接着剤、或いは合成
樹脂製の弾性変形部材で、接着剤の場合には連結
管２をコンクリート杭１の頭部に完全に固定する
ためのもの、また弾性変形部材の場合は、連結管
２をコンクリート杭１の頭部に完全に固定するの
でなく、水平方向及び鉛直方向にある程度自由度
をもたせて固定するためのものであり、この場合
には、後述する仕切板６により、第３図に示すよ
うに、フーテイング５と杭１との遮断を完全なも
のとし、その下方において、杭１が自由に上下動
し得るように構成する。 4 is an elastically deformable member made of non-shrinkable adhesive such as grout or synthetic resin; in the case of adhesive, it is used to completely fix the connecting pipe 2 to the head of the concrete pile 1; In this case, the connecting pipe 2 is not completely fixed to the head of the concrete pile 1, but is fixed with some degree of freedom in the horizontal and vertical directions. As shown in FIG. 3, the footing 5 and the pile 1 are completely isolated by the plate 6, and the pile 1 is configured to be able to freely move up and down below.
そして、グラウトを使用する時は、連結管２を
杭１の頭部に嵌装した後、両者の間隙に注入する
が、グラウト以外の接着材を使用するときは、予
め杭頭部の外周又は連結管２の内周に接着材を塗
布するようにしても良い。 When using grout, after fitting the connecting pipe 2 to the head of the pile 1, it is injected into the gap between the two, but when using an adhesive other than grout, the outer periphery of the pile head or An adhesive may be applied to the inner circumference of the connecting pipe 2.
５Ａは中詰コンクリートで、第１図に示す実施
例においては、フーテイング５と一体に構成され
ているが、夫々が別体に、又は中詰コンクリート
５Ａを省略することも出来る。 Reference numeral 5A denotes a filling concrete, which is constructed integrally with the footing 5 in the embodiment shown in FIG. 1, but it is also possible to separate each footing 5 or to omit the filling concrete 5A.
６は仕切板で、上記コンクリート杭１の頭部上
面に、その全面を覆うように載置されており、例
えば、厚さ１〜２mm程度の鋼板又はゴム板等で構
成されている。 A partition plate 6 is placed on the upper surface of the head of the concrete pile 1 so as to cover the entire surface thereof, and is made of, for example, a steel plate or a rubber plate with a thickness of about 1 to 2 mm.
而して、本考案は、連結管２をコンクリート杭
１の頭部に嵌装して固定した後、フーテイング５
を連結管２の存在する範囲で造成するが、係合用
鉄筋３はフーテイング５中に延びて、いわゆるア
ンカー筋としての役割を果たし、フーテイング５
と連結管２は堅固に連結されることになる。 Therefore, in the present invention, after the connecting pipe 2 is fitted and fixed to the head of the concrete pile 1, the footing 5 is
is constructed in the area where the connecting pipe 2 exists, but the engagement reinforcing bars 3 extend into the footing 5 and play the role of so-called anchor bars,
and the connecting pipe 2 are firmly connected.
本考案は上記のような構成であるので、次の如
き諸効果がある。
Since the present invention has the above configuration, it has the following effects.
従来のコンクリート杭においては内部の鉄筋
を利用するために、地表からかなり突出させて
おく必要があつたが、本考案によればその必要
はなく、杭の全長をほぼ100％利用できる。 In conventional concrete piles, it was necessary to protrude considerably from the ground surface in order to utilize the internal reinforcing bars, but with the present invention, this is not necessary and almost 100% of the entire length of the pile can be used.
従来の如き杭頭部を崩して鉄筋を露出させる
必要はないので、この手間が省け、施工が容易
且つ迅速に行いうる。 Since there is no need to break down the pile head to expose the reinforcing bars as in the conventional method, this time and effort can be saved and construction can be carried out easily and quickly.
連結管２を杭頭部に接着剤等により固定する
ようにしたので、簡便かつ強固である。 Since the connecting pipe 2 is fixed to the pile head with adhesive or the like, it is simple and strong.
連結管２の中央に薄肉部２ａを設けたので、
材料の削減、軽量化等を図ることができ、しか
も両端は厚肉となつて強度的に充分である。 Since the thin wall portion 2a is provided in the center of the connecting pipe 2,
It is possible to reduce the amount of material and weight, and also has sufficient strength because both ends are thick.
また、地震時においては、薄肉部２ａが容易
に弾性変形して、この時作用する水平力が直接
的に杭１に作用することが防止され、しかも終
局的には、ここが降伏して杭１の応力が低減さ
れる。 In addition, during an earthquake, the thin wall portion 2a easily elastically deforms, preventing the horizontal force that acts at this time from directly acting on the pile 1, and ultimately yields and causes the pile to collapse. 1 stress is reduced.
図面は本考案の実施例を示し、第１図は縦断面
図、第２図は連結管の斜視図、第３図は他の実施
例の縦断面図である。
１……コンクリート杭、２……連結管、２ａ…
…同薄肉部、２ｂ……同肉厚部、３……係合用鉄
筋、４……接着剤、５……フーテイング、６……
仕切板。
The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a perspective view of a connecting pipe, and FIG. 3 is a longitudinal sectional view of another embodiment. 1... Concrete pile, 2... Connecting pipe, 2a...
...Same thin wall part, 2b...Same thick wall part, 3...Engagement reinforcing bar, 4...Adhesive, 5...Footing, 6...
Partition board.
Claims (1)
筒状連結管を嵌装して固定し、該連結管の上部の
周囲にフーテイングとの係合用鉄筋を適宜数溶接
するとゝもに、連結管の存在する範囲でフーテイ
ングを造成することを特徴としたコンクリート杭
頭とフーテイングとの連結構造。 A cylindrical connecting pipe with a thin wall in the center is fitted and fixed onto the head of a concrete pile, and an appropriate number of reinforcing bars for engagement with the footing are welded around the top of the connecting pipe. A structure for connecting concrete pile caps and footings, which is characterized by creating footings within the existing range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18776183U JPS6096444U (en) | 1983-12-05 | 1983-12-05 | Connection structure between concrete pile cap and footing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18776183U JPS6096444U (en) | 1983-12-05 | 1983-12-05 | Connection structure between concrete pile cap and footing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6096444U JPS6096444U (en) | 1985-07-01 |
| JPH0128125Y2 true JPH0128125Y2 (en) | 1989-08-28 |
Family
ID=30405223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18776183U Granted JPS6096444U (en) | 1983-12-05 | 1983-12-05 | Connection structure between concrete pile cap and footing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6096444U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6524675B1 (en) | 1999-05-13 | 2003-02-25 | 3M Innovative Properties Company | Adhesive-back articles |
| JP2005105812A (en) * | 2003-09-09 | 2005-04-21 | Nippon Steel Corp | Pile head reinforcing member, and pile head reinforcing structure using the same |
| JP5008683B2 (en) * | 2003-09-09 | 2012-08-22 | 新日本製鐵株式会社 | Pile head reinforcement member and pile head reinforcement structure using it |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58187762A (en) * | 1982-04-23 | 1983-11-02 | 三菱電機株式会社 | Freezing refrigerator |
-
1983
- 1983-12-05 JP JP18776183U patent/JPS6096444U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58187762A (en) * | 1982-04-23 | 1983-11-02 | 三菱電機株式会社 | Freezing refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6096444U (en) | 1985-07-01 |
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