JPS6259725A - Joint structure between custom-made pile and foundation slab - Google Patents
Joint structure between custom-made pile and foundation slabInfo
- Publication number
- JPS6259725A JPS6259725A JP19756885A JP19756885A JPS6259725A JP S6259725 A JPS6259725 A JP S6259725A JP 19756885 A JP19756885 A JP 19756885A JP 19756885 A JP19756885 A JP 19756885A JP S6259725 A JPS6259725 A JP S6259725A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- footing
- head
- custom
- made 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.)
- Pending
Links
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、既製杭と基礎スラブとの接合構造に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a joint structure between a ready-made pile and a foundation slab.
（従来の技術）
従来、第２図に示すように、地盤ａに打ち込まれた既製
杭すとフーチング基礎Ｃとを、根切り底より突出させコ
ンクリートｄを生埋めした既製杭すの頭部ｅをフーチン
グ基礎Ｃに埋め込むことにより一体化したもの、あるい
は第３図に示すように、既製杭すの頭部ｅ内に下部を挿
入しコンクリートｄで接合した組鉄筋ｆを介して一体化
したものが知られる。(Prior art) Conventionally, as shown in Fig. 2, a ready-made pile and a footing foundation C are driven into the ground a, and the head e of the ready-made pile is made to protrude from the bottom of the cut and is filled with concrete d. It can be integrated by being embedded in the footing foundation C, or as shown in Figure 3, it can be integrated by inserting the lower part into the head e of a prefabricated pile and connecting it with concrete d using assembled reinforcing bars f. known.
（発明が解決しようとする問題点）
しかしながら、従来の技術の前者は、既製杭の頭部を根
切り底から突出させるため、根切り作業が困難であると
共にフーチング基礎の配筋の施工が煩雑であり、またフ
ーチング基礎の下側主筋に斜め補強筋が必要となるとい
う不都合を伴う。又後者は、既製杭の端部付近を地震に
対して被害を受けないよう安全側に設計するため、該端
部に挿入する組鉄筋が過大である等の不都合を伴う。(Problem to be solved by the invention) However, in the former conventional technology, the head of the ready-made pile protrudes from the bottom of the root cut, which makes root cutting work difficult and the construction of reinforcing the footing foundation complicated. This also involves the inconvenience of requiring diagonal reinforcement for the lower main reinforcement of the footing foundation. Furthermore, in the latter case, because the vicinity of the end of the prefabricated pile is designed to be safe so as not to be damaged by an earthquake, there are inconveniences such as the need for an excessively large number of reinforcing bars to be inserted into the end.
本発明は、このような不都合を無くすることをその目的
としたものである。The present invention aims to eliminate such inconveniences.
（問題点を解決するための手段）
本発明は、地盤に打ち込まれた既製杭とフーチング基礎
とを、該既製杭の頭部内に下部を挿入しコンクリートで
接合した組鉄筋を介して−体化ｊノだものにおいて、該
既製杭の頭部の周りに且つ該フーチング基礎の下面に接
して補強ブロックを形成したことを特徴とする。(Means for Solving the Problems) The present invention connects a ready-made pile driven into the ground and a footing foundation to the body by inserting the lower part into the head of the ready-made pile and connecting it with concrete. In the modified version, a reinforcing block is formed around the head of the ready-made pile and in contact with the lower surface of the footing foundation.
（作 用）
建物が地震等により水平方向の力を受けたとき、杭頭に
受ける上部構造からのベースシェアはフーチング基礎か
ら１１鉄筋を経て既製杭及びその周りの補強ブロックに
伝わり、フーチング基礎の周面と補強ブロックの底面及
び周面で吸収され、杭頭に作用する応力集中を緩和させ
る。(Function) When a building receives horizontal force due to an earthquake, the base shear from the superstructure that is applied to the pile head is transmitted from the footing foundation to the prefabricated piles and the surrounding reinforcement blocks through the 11 reinforcing bars, and the base share of the footing foundation is It is absorbed by the peripheral surface and the bottom and peripheral surfaces of the reinforcing blocks, alleviating the stress concentration acting on the pile cap.
（実施例） 以下、本発明の実施例を図面につき説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図において、（１）は既製杭で、該既製杭（１）は
フーチング基礎（２）と、該既製杭（１）の頭部内に下
部を挿入しコンクリート（３）で接合した組鉄筋（４）
を介して一体化したものとした。In Figure 1, (1) is a prefabricated pile, and the prefabricated pile (1) is a combination of a footing foundation (2) and a lower part inserted into the head of the prefabricated pile (1) and connected with concrete (3). Rebar (4)
It has been integrated through the
（５）はフーチング基礎（２）の下面に接し既製杭（１
）の周りに形成した補強ブロックで、その上面は根切り
底を突き固めるために施された例えば割ぐり５府（６）
の上の捨コンクリート（７）の上面と同じ高さにした。(5) is in contact with the bottom surface of the footing foundation (2) and the prefabricated pile (1
) is a reinforcing block formed around the upper surface of the reinforcing block, for example, Wariguri 5fu (6), which is made to tamp down the root cut bottom
The height was set to be the same as the top surface of the concrete (7) above.
既製杭（１）の径をＤとすると、例えば補強ブロック（
５）の高さは該径りと等しいか、あるいは大きくし、杭
（１）の周面から該ブロック（５）の外周面までの幅は
１．５Ｄとした。If the diameter of the ready-made pile (1) is D, for example, the reinforcement block (
The height of block 5) was equal to or larger than the radius, and the width from the circumferential surface of the pile (1) to the outer circumferential surface of the block (5) was 1.5D.
補強ブロック（５）は、コンクリート、締めかためた砂
、あるいは地盤改良したものから成るものとした。The reinforcing block (5) was made of concrete, compacted sand, or ground-improved material.
（発明の効果）
このように本発明によるときは、地盤等により建物に水
平方向の力が加わった時、抗頭に受ける上部ＭＩＪ造か
らのベースシェアはフーチング基礎の周面と補強ブロッ
クの下面及び周面で吸収されるため、従来のものに比べ
て既製杭の頭部内に挿入する組鉄筋と少なくすることが
でき、しかも根切り作業及びフーチング基礎の配筋の施
工が容易である等の効果がある。(Effect of the invention) According to the present invention, when a horizontal force is applied to the building by the ground etc., the base shear from the upper MIJ structure that is received by the head is applied to the peripheral surface of the footing foundation and the lower surface of the reinforcing block. Since it is absorbed by the surrounding surface, fewer reinforcing bars need to be inserted into the head of ready-made piles compared to conventional ones, and root cutting work and reinforcing of footing foundations are easier. There is an effect.
第１図は本発明の１実施例の断面図、第２図及び第３図
はいずれも従来例の断面図である。
（１）・・・既製杭
（の・・・フーチング基礎
（３）・・・コンクリート
（４）・・・組鉄筋
（５）・・・補強ブロック
他２名 −FIG. 1 is a sectional view of one embodiment of the present invention, and FIGS. 2 and 3 are sectional views of a conventional example. (1)...ready-made piles (of...footing foundations (3)...concrete (4)...set reinforcing bars (5)...reinforcement blocks and 2 others -
Claims (1)
製杭の頭部内に下部を挿入しコンクリートで接合した組
鉄筋を介して一体化したものにおいて、該既製杭の頭部
の周りに且つ該フーチング基礎の下面に接して補強ブロ
ックを形成したことを特徴とする既製杭と基礎スラブと
の接合構造。A prefabricated pile driven into the ground and a footing foundation are integrated via assembled reinforcing bars whose lower part is inserted into the head of the prefabricated pile and joined with concrete, in which A joint structure between ready-made piles and a foundation slab, characterized in that a reinforcing block is formed in contact with the lower surface of the footing foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19756885A JPS6259725A (en) | 1985-09-09 | 1985-09-09 | Joint structure between custom-made pile and foundation slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19756885A JPS6259725A (en) | 1985-09-09 | 1985-09-09 | Joint structure between custom-made pile and foundation slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6259725A true JPS6259725A (en) | 1987-03-16 |
Family
ID=16376664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19756885A Pending JPS6259725A (en) | 1985-09-09 | 1985-09-09 | Joint structure between custom-made pile and foundation slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6259725A (en) |
-
1985
- 1985-09-09 JP JP19756885A patent/JPS6259725A/en active Pending
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