JPH026107Y2 - - Google Patents
Info
- Publication number
- JPH026107Y2 JPH026107Y2 JP1988050454U JP5045488U JPH026107Y2 JP H026107 Y2 JPH026107 Y2 JP H026107Y2 JP 1988050454 U JP1988050454 U JP 1988050454U JP 5045488 U JP5045488 U JP 5045488U JP H026107 Y2 JPH026107 Y2 JP H026107Y2
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- concrete pile
- pile
- cast
- ready
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Description
【考案の詳細な説明】
この考案は先端部分を大径の場所打ちコンクリ
ート杭とし、本体部分を中空既製コンクリート杭
とした複合杭に関し、主として市街地における４
〜15階程度の中高層ビルの構築に利用するのに適
した基礎杭に関するもので、支持性能の優れた基
礎杭を無公害でしかも安価に施工できる杭を提供
することを目的としたものである。[Detailed description of the invention] This invention relates to a composite pile with a large-diameter cast-in-place concrete pile at the tip and a hollow ready-made concrete pile at the main body.
This relates to foundation piles that are suitable for use in the construction of mid-to-high-rise buildings with ~15 floors, and aims to provide foundation piles with excellent support performance that can be constructed without pollution and at low cost. .
通常市街地工事に使用される基礎杭は施工時に
振動、騒音の少ないこと、支持性能の良いこと、
施工性の良いこと、さらにはコストの安いこと等
が要望される。 Foundation piles normally used for construction in urban areas have low vibration and noise during construction, and have good support performance.
It is desired to have good workability and low cost.
これに対して既製杭の打ち込み工法や場所打ち
RC杭工法あるいは既製杭の埋込み工法など基礎
杭に関して多数の発明、考案があるがその多くは
長所もあるが前記した要望の全てを満足させるよ
うなものは少ない。 In contrast, the method of driving ready-made piles and the method of driving piles in place
There are many inventions and ideas regarding foundation piles, such as the RC pile construction method and the embedding method of prefabricated piles, and although many of them have advantages, there are few that satisfy all of the above-mentioned demands.
この考案はこのような事情に鑑み開発されたも
ので、以下図示した実施例に基づいて説明する。 This invention was developed in view of the above circumstances, and will be explained below based on the illustrated embodiment.
第１図〜第３図はこの考案の複合基礎杭の施工
手順を示したもので、まずリバースサーキユレー
シヨン工法等により掘削を行い、支持層に達した
先端部分は地盤支持力を上げるため拡翼ピツトを
使用する等して拡底する。Ａはこの掘削孔を示
し、この部分の直径を350〜600mmとした場合、拡
底部Ｂは直径で200mm程度拡大し１〜2m程度の深
さ削孔する。 Figures 1 to 3 show the construction procedure for the composite foundation pile of this invention. First, excavation is performed using the reverse circulation method, etc., and the tip that reaches the support layer is used to increase the ground bearing capacity. Expand the bottom by using a wing expansion pit. A indicates this excavation hole, and if the diameter of this part is 350 to 600 mm, the expanded bottom part B is expanded by about 200 mm in diameter and drilled to a depth of about 1 to 2 m.
削孔が終わつたら直ちに掘削機１のリバースロ
ツドを兼用する等して、コンクリート２を拡底部
Ｂに打設して大径の場所打ちコンクリート杭を造
成する。なおこのコンクリート杭２には凝結遅延
剤を入れる等して固結時間を遅らせることが望ま
しい。 Immediately after drilling is completed, concrete 2 is poured into the expanded bottom part B using the reverse rod of the excavator 1 to create a large-diameter cast-in-place concrete pile. Note that it is desirable to delay the setting time by adding a setting retarder to the concrete pile 2.
次にこの拡底部Ｂの場所打ちコンクリート杭２
中に先端に鋼製シユー４を有する小径の既製コン
クリート杭３を圧入する。このシユー４は既製コ
ンクリート杭３と等しい径を有する中空円筒状に
形成され、場所打ち杭２に埋設し易い形状となつ
ていて、また円筒表面には場所打ちコンクリート
との付着力をよくするため付着力付与手段となる
凹凸面５または６が形成されている。このように
して、この考案の複合基礎杭は、掘削孔Ａの先端
拡底部Ｂの大径場所打ちコンクリート杭２の上部
コンクリート中に小径の既製コンクリート杭３の
先端に固定された鋼製シユー４が埋設され一体に
構成される。 Next, cast-in-place concrete pile 2 of this expanded bottom part B
A small-diameter ready-made concrete pile 3 having a steel shoe 4 at the tip is press-fitted inside. This shoe 4 is formed into a hollow cylindrical shape with the same diameter as the ready-made concrete pile 3, and has a shape that makes it easy to embed in the cast-in-place pile 2, and the cylindrical surface is designed to improve adhesion with the cast-in-place concrete. An uneven surface 5 or 6 is formed which serves as an adhesive force imparting means. In this way, the composite foundation pile of this invention has a steel shoe 4 fixed to the tip of a small-diameter ready-made concrete pile 3 in the upper concrete of the large-diameter cast-in-place concrete pile 2 at the tip enlarged bottom part B of the excavated hole A. are buried and constructed in one piece.
第４図、第５図は付着力付与手段の実施例を示
すもので、第４図のシユーは穴あき鉄板によつて
円筒状に形成されたもので、多数の小孔５を円筒
面に穿設することにより表面に凹凸面を形成して
付着力を増大したものであり、第５図のシユーは
鉄板をほぼ円筒状に断面形状が凹凸面６になるよ
うに形成し付着力を増大したもので、円筒面に凹
凸形状を形成して場所打ちコンクリートとの付着
力付与手段を設けたものである。 4 and 5 show examples of the adhesion force imparting means. The shoe in FIG. 4 is formed into a cylindrical shape by a perforated iron plate, and a large number of small holes 5 are formed on the cylindrical surface. By drilling holes, an uneven surface is formed on the surface to increase the adhesion force. The cylindrical surface has an uneven shape and is provided with means for imparting adhesion to cast-in-place concrete.
この考案は以上の構成からなり、本体を小径の
既製コンクリート杭となし、先端に円筒状のシユ
ーを固定したからその既製コンクリート杭を先端
拡底部の大径場所打ちコンクリート杭に埋設して
一体化することが容易であり、またこのようにし
て複合基礎杭としてあるので、高強度の既製コン
クリート杭の材料強度と、大径の場所打ちコンク
リート杭部分の拡底による地盤支持力の増大とを
十分利用し、大きな支持性能を持つた杭を短時間
で、しかも振動、騒音を生ずることなく経済的に
施工できる。 This idea consists of the above structure, the main body is a small-diameter ready-made concrete pile, a cylindrical shoe is fixed to the tip, and the ready-made concrete pile is embedded in a large-diameter cast-in-place concrete pile with an enlarged bottom part at the tip to integrate it. In addition, since it is a composite foundation pile in this way, the material strength of the high-strength ready-made concrete pile and the increase in ground bearing capacity due to the bottom expansion of the large diameter cast-in-place concrete pile part can be fully utilized. Therefore, piles with high supporting performance can be constructed economically in a short time and without causing vibration or noise.
第１図、第２図および第３図は施工手順を示す
断面図、第４図、第５図は付着力付与手段を示す
断面図である。
Ａ……掘削孔、Ｂ……拡底部、１……掘削機、
２……場所打ちコンクリート杭、３……既製コン
クリート杭、４……シユー、５……小孔、６……
凹凸。
FIGS. 1, 2, and 3 are sectional views showing the construction procedure, and FIGS. 4 and 5 are sectional views showing the adhesive force imparting means. A...Drilling hole, B...Bottom expansion part, 1...Drilling machine,
2...Cast-in-place concrete pile, 3...Ready-made concrete pile, 4...Show, 5...Small hole, 6...
Unevenness.
Claims (1)
ト杭の掘削孔の先端拡底部に打設されたコンクリ
ートの上部コンクリート中に小径の既製コンクリ
ート杭の先端に固定された鋼製シユーが埋設され
一体に構成された杭であり、前記鋼製シユーは既
製コンクリート杭の径と等しい径の中空円筒状に
形成され円筒には場所打ちコンクリート杭のコン
クリートとの付着力付与手段となる凹凸面が形成
されていることを特徴とする複合基礎杭。 A steel shoe fixed to the tip of a small-diameter ready-made concrete pile is embedded and integrated into the upper concrete of the large-diameter cast-in-place concrete pile placed at the bottom expanded portion of the tip of the excavated hole. The steel shoe is formed into a hollow cylindrical shape with a diameter equal to the diameter of the ready-made concrete pile, and the cylinder has an uneven surface that serves as a means for imparting adhesion to the concrete of the cast-in-place concrete pile. Composite foundation pile characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988050454U JPH026107Y2 (en) | 1988-04-14 | 1988-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988050454U JPH026107Y2 (en) | 1988-04-14 | 1988-04-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63171438U JPS63171438U (en) | 1988-11-08 |
| JPH026107Y2 true JPH026107Y2 (en) | 1990-02-14 |
Family
ID=30873834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988050454U Expired JPH026107Y2 (en) | 1988-04-14 | 1988-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH026107Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631442A (en) * | 2014-12-24 | 2015-05-20 | 福建工程学院 | Full casing pipe soil taking vibration construction method for squeezed and expanded cast-in-place pile |
| CN105735253A (en) * | 2016-03-01 | 2016-07-06 | 江苏东合南岩土科技股份有限公司 | Construction method for expansion head anti-pressing and anti-pulling pile |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4625896B2 (en) * | 2002-09-30 | 2011-02-02 | 三谷セキサン株式会社 | Pile digging method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4837905A (en) * | 1971-09-16 | 1973-06-04 |
-
1988
- 1988-04-14 JP JP1988050454U patent/JPH026107Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4837905A (en) * | 1971-09-16 | 1973-06-04 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631442A (en) * | 2014-12-24 | 2015-05-20 | 福建工程学院 | Full casing pipe soil taking vibration construction method for squeezed and expanded cast-in-place pile |
| CN105735253A (en) * | 2016-03-01 | 2016-07-06 | 江苏东合南岩土科技股份有限公司 | Construction method for expansion head anti-pressing and anti-pulling pile |
| CN105735253B (en) * | 2016-03-01 | 2017-10-10 | 江苏东合南岩土科技股份有限公司 | A kind of construction method of enlarged footing resistance to compression uplift pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63171438U (en) | 1988-11-08 |
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