JPS6143489B2 - - Google Patents
Info
- Publication number
- JPS6143489B2 JPS6143489B2 JP3718182A JP3718182A JPS6143489B2 JP S6143489 B2 JPS6143489 B2 JP S6143489B2 JP 3718182 A JP3718182 A JP 3718182A JP 3718182 A JP3718182 A JP 3718182A JP S6143489 B2 JPS6143489 B2 JP S6143489B2
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- pipe column
- concrete
- ground
- fitted
- 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 31
- 239000010959 steel Substances 0.000 claims description 31
- 239000004567 concrete Substances 0.000 claims description 28
- 238000010276 construction Methods 0.000 claims description 15
- 210000004712 air sac Anatomy 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】
本発明は軟弱地盤における基礎杭の施工法の改
良に係るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the construction method of foundation piles in soft ground.
軟弱地盤に既製杭を貫入する場合、横圧に対す
る抵抗力に対して十分な杭群を造成するために
は、膨大な本数の杭を必要とし、また地中撹拌に
よつて施工されるアースコンクリート杭において
は、使用コンクリート量について大きな無駄が予
測される。 When penetrating ready-made piles into soft ground, a huge number of piles are required to create a group of piles sufficient to resist lateral pressure. For piles, a large amount of concrete is expected to be wasted.
本発明は前記従来工法の欠点を除去しコンクリ
ート使用量を節減するとともに、外周地盤の性状
に即応した構造上合理的な多段球根状のコンクリ
ート杭を提供することを目的として提案されたも
のであつて、基礎杭施工用の鋼管柱の外周に上端
の開口した長尺の弾性気嚢体を嵌着し、同気嚢体
の下端閉塞部を前記鋼管柱の中空部下端部内に嵌
着された内側沓金物と前記気嚢体及び鋼管柱の下
端外周部に嵌着された外側沓金物との間に挾着
し、前記鋼管柱を前記気嚢体及び内外両沓金物を
装着したまま地中に所定深度まで嵌入したのち、
前記鋼管柱を内部にコンクリートを打設しながら
引抜き、前記気嚢体及びその下端閉塞部を挾着し
た内外両沓金物を地中に残留せしめるとともに、
前記気嚢体を打設コンクリート圧によつて外周地
盤内に膨出させることを特徴とする基礎杭施工方
法に係るものである。 The present invention has been proposed for the purpose of eliminating the drawbacks of the conventional construction method, reducing the amount of concrete used, and providing a structurally rational multi-stage bulbous concrete pile that is responsive to the properties of the surrounding ground. Then, a long elastic air bag with an open upper end is fitted on the outer periphery of a steel pipe column for foundation pile construction, and the lower end closed part of the air bag is inserted into the inner shoe fitted inside the hollow lower end of the steel pipe column. The metal fittings are clamped between the air bladder body and the outer shoe fittings fitted to the outer periphery of the lower end of the steel pipe column, and the steel pipe column is pushed into the ground to a predetermined depth with the air bladder body and both the inner and outer shoe fittings attached. After fitting,
Pulling out the steel pipe column while pouring concrete inside the column, leaving both the inner and outer foot metal fittings holding the air bag body and its lower end closing part in the ground,
The present invention relates to a foundation pile construction method characterized in that the air bladder is bulged into the peripheral ground by the pressure of poured concrete.
本発明は前記したように、基礎杭施工用の鋼管
柱の外周に上端の開口した長尺の弾性気嚢体を嵌
着し、同気嚢体の下端閉塞部を前記鋼管柱の中空
部下端部に嵌着された内側沓金物と、前記気嚢体
及び鋼管柱の下端外周部に嵌着された外側沓金物
との間に挾着し、この状態で前記鋼管柱をその外
周に嵌着された弾性気嚢体とともに地中に所定深
度まで貫入し、しかるのち前記鋼管柱内にコンク
リートを打設するようにしたので、同打設コンク
リートの自重によつて前記両沓金物が弾性気嚢体
を挾着したまま沓金物の到達地点に残留する。 As described above, the present invention involves fitting a long elastic air bag with an open upper end to the outer periphery of a steel pipe column for foundation pile construction, and fitting the lower end closed part of the air bag to the hollow lower end of the steel pipe column. The fitted inner shoe fitting is clamped between the air bag body and the outer shoe fitting fitted to the outer periphery of the lower end of the steel pipe column, and in this state, the steel pipe column is fitted with an elastic material fitted to the outer periphery of the steel pipe column. The elastic air sac was penetrated into the ground together with the air sac to a predetermined depth, and then concrete was poured into the steel pipe column, so that the two foot metal fittings clamped the elastic air sac due to the weight of the poured concrete. It remains at the destination of the metal fittings.
而して前記鋼管柱をこれにコンクリートを打設
しながら引抜くことによつて、打設コンクリート
の圧力により前記気嚢体が外周地盤の性状に応じ
て拡大膨脹し、同地盤内には外周面を気嚢体で被
覆され、且つ外周地盤圧とバランスした多段球根
状のコンクリート杭躯体が造成されるものであ
る。 By pulling out the steel pipe column while pouring concrete onto it, the air envelope expands and expands in accordance with the properties of the surrounding ground due to the pressure of the poured concrete. A multi-stage bulbous concrete pile structure is constructed, which is covered with an air sac and is balanced with the surrounding ground pressure.
このように本発明によれば簡単な施工で、外周
地盤に圧着された多段球根状の地盤反応に対応し
た基礎杭が造成され、十分な支持力と、横圧に対
する抵抗力とを有する杭躯体が造成されるもので
ある。また同杭躯体は外周土圧とバランスした状
態にまで地中に拡大膨脹された多段球根状の躯体
に構成されるので、使用コンクリートに無駄を生
じることがなく、杭躯体造成用コンクリートは硬
化に至るまで前記弾性気嚢体によつて保護され、
地中泥水、土砂等の混入によつて劣化する惧れが
ない等、本発明は多くの利点を有するものであ
る。 As described above, according to the present invention, a multi-stage bulbous foundation pile that is crimped to the peripheral ground and responds to the ground reaction can be created with simple construction, and a pile frame that has sufficient bearing capacity and resistance to lateral pressure can be created. is created. In addition, the pile structure is constructed as a multi-stage bulbous structure that expands into the ground to balance the surrounding earth pressure, so there is no waste of concrete used, and the concrete used to construct the pile structure does not harden. protected by the elastic air sac until
The present invention has many advantages, including the fact that there is no risk of deterioration due to contamination with underground mud water, earth and sand, etc.
以下本発明を図示の実施例について説明する。 The present invention will be described below with reference to the illustrated embodiments.
１は基礎杭施工用の鋼管柱で、その外周に弾性
気嚢体として上端の開口した長尺のゴム袋２が嵌
着され、同ゴム袋２の下端閉塞部が、前記鋼管柱
１の中空部下端部内に嵌着された内側沓金物３と
前記鋼管柱１及びゴム袋２の下端外周部に嵌着さ
れた外側沓金物４とによつて挾着されている。 Reference numeral 1 denotes a steel pipe column for foundation pile construction, and a long rubber bag 2 with an open top end is fitted onto the outer periphery of the column as an elastic air bag. It is clamped by an inner shoe fitting 3 fitted inside the lower end and an outer shoe fitting 4 fitted on the lower end outer periphery of the steel pipe column 1 and the rubber bag 2.
図中５は地表面ａまたは海底面の近傍において
鋼管柱１に装着された、鋼管柱１の摺動すべき硬
質ゴム筒、６はゴム袋２に連結されたゴム管で、
コンクリート投入時において鋼管柱１内の余剰な
空気、若しくは水を吐出するものである。 In the figure, 5 is a hard rubber cylinder that is attached to the steel pipe column 1 near the ground surface a or the seabed surface and on which the steel pipe column 1 slides, and 6 is a rubber tube connected to the rubber bag 2.
This discharges excess air or water inside the steel pipe column 1 when concrete is poured.
而して前記のようにゴム袋２が嵌着され、且つ
同ゴム袋２の下端が前記沓金物３，４で挾着され
た鋼管柱１を軟弱地盤ｂ内の所定深度まで貫入す
る。（第１図参照）
次いでコンクリート配送用可撓管７を介してコ
ンクリート８を前記鋼管柱１に投入するととも
に、同鋼管柱１を引抜くと、コンクリート８の自
重によつて前記沓金物３，４は軟弱地盤ｂ内にお
ける沓金物到達地点に残留し、一方ゴム袋２は打
設コンクリート８の圧力によつて膨脹しつつ、同
コンクリート８を確保する。（第２図参照）
更に前記鋼管柱１内に対するコンクリート８の
打設を継続し、同打設コンクリート８の量に対応
して鋼管柱１を徐々に引上げていく。（第３図参
照）
かくして鋼管柱１に投入されたコンクリート８
は下部より次第に上昇していくが、ゴム袋２を介
してその外側地盤の性質に応じて拡大膨脹し、地
盤壁圧とバランスした時点で膨脹が止まり、鋼管
柱１の引上げが完了したとき、軟弱地盤内に多段
球根状の杭が構築される。なおこの際前記ゴム管
６よりモルタル８′が漏出し、施工の完了が分
る。（第４図参照）
なおコンクリート８の膨脹する状態とゴム袋２
の展張する状態を、コンクリート投入量と鋼管柱
１の引上量とを注意深く観測することによつて監
視し、ゴム袋２の破裂を防止することができる。 Then, the rubber bag 2 is fitted as described above, and the lower end of the rubber bag 2 penetrates the steel pipe column 1, which is clamped by the shoe fittings 3 and 4, to a predetermined depth in the soft ground b. (See Figure 1) Concrete 8 is then poured into the steel pipe column 1 through the flexible concrete delivery pipe 7, and when the steel pipe column 1 is pulled out, the weight of the concrete 8 causes the foot fittings 3, 4 remains in the soft ground b at the point where the shoe hardware reaches, while the rubber bag 2 expands due to the pressure of the poured concrete 8 and secures the concrete 8. (See FIG. 2) Furthermore, the pouring of concrete 8 into the steel pipe column 1 is continued, and the steel tube column 1 is gradually pulled up in accordance with the amount of poured concrete 8. (See Figure 3) Concrete 8 thus poured into steel pipe column 1
gradually rises from the bottom, expands and expands through the rubber bag 2 according to the nature of the ground outside, and stops expanding when it balances with the ground wall pressure, and when the lifting of the steel pipe column 1 is completed, Multi-stage bulbous piles are constructed in soft ground. At this time, the mortar 8' leaks from the rubber tube 6, indicating that the construction is complete. (See Figure 4) The expanding state of the concrete 8 and the rubber bag 2
It is possible to prevent the rubber bag 2 from bursting by monitoring the expanding state of the rubber bag 2 by carefully observing the amount of concrete thrown in and the amount of lifting of the steel pipe column 1.
なお以上の施工は無筋コンクリート杭であるの
で、鉄筋コンクリート杭を施工するには、必要な
時期に鉄筋籠９を挿入するとよい。なお１０は杭
完成の時点で打設される最上位のコンクリートで
ある。 In addition, since the construction described above is for unreinforced concrete piles, reinforcing bar cages 9 may be inserted at the necessary times to construct reinforced concrete piles. Note that 10 is the highest level of concrete that will be placed when the pile is completed.
なお本発明は小規模な構造物の基礎杭の施工、
大規模工事における大ケーソン底面より更に下部
に杭を必要とする場合の基礎杭の施工等に適用さ
れるものである。 The present invention is applicable to the construction of foundation piles for small-scale structures,
It is applied to the construction of foundation piles in large-scale construction projects that require piles further below the bottom of a large caisson.
以上本発明を実施例について説明したが、本発
明は勿論このような実施例にだけ局限されるもの
ではなく、本発明の精神を逸脱しない範囲内で
種々の設計の改変を施しうるものである。 Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .
第１図乃至第４図は本発明に係る基礎杭施工方
法の一実施例の工程を示す縦断面図、第５図は鉄
筋籠を使用した場合の実施例を示す縦断面図であ
る。
１……鋼管柱、２……ゴム袋、３……内側沓金
物、４……外側沓金物、８……コンクリート。
1 to 4 are longitudinal cross-sectional views showing steps of an embodiment of the foundation pile construction method according to the present invention, and FIG. 5 is a longitudinal cross-sectional view showing an embodiment in which a reinforcing bar cage is used. 1...Steel pipe column, 2...Rubber bag, 3...Inner shoe hardware, 4...Outer shoe hardware, 8...Concrete.
Claims (1)
た長尺の弾性気嚢体を嵌着し、同気嚢体の下端閉
塞部を前記鋼管柱の中空部下端部内に嵌着された
内側沓金物と前記気嚢体及び鋼管柱の下端外周部
に嵌着された外側沓金物との間に挾着し、前記鋼
管柱を前記気嚢体及び内外両沓金物を装着したま
ま地中に所定深度まで嵌入したのち、前記鋼管柱
を内部にコンクリートを打設しながら引抜き、前
記気嚢体及びその下端閉塞部を挾着した内外両沓
金物を地中に残留せしめるとともに、前記気嚢体
を打設コンクリート圧によつて外周地盤内に膨出
させることを特徴とする基礎杭施工方法。1. A long elastic air bag with an open upper end is fitted on the outer periphery of a steel pipe column for foundation pile construction, and the lower end closed part of the air bag is fitted into the hollow lower end of the steel pipe column. and an outer shoe fitting fitted to the outer periphery of the lower end of the air bladder and the steel pipe column, and the steel pipe column is inserted into the ground to a predetermined depth with the air bladder and both the inner and outer shoe fittings attached. After that, the steel pipe column is pulled out while pouring concrete inside, and both the inner and outer foot metal fittings that clamp the air bladder and its lower end closure are left in the ground, and the air bladder is placed under the pressure of the poured concrete. A foundation pile construction method characterized by bulging out into the surrounding ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3718182A JPS58156620A (en) | 1982-03-11 | 1982-03-11 | Construction work of foundation pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3718182A JPS58156620A (en) | 1982-03-11 | 1982-03-11 | Construction work of foundation pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58156620A JPS58156620A (en) | 1983-09-17 |
| JPS6143489B2 true JPS6143489B2 (en) | 1986-09-27 |
Family
ID=12490412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3718182A Granted JPS58156620A (en) | 1982-03-11 | 1982-03-11 | Construction work of foundation pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58156620A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6286222A (en) * | 1985-10-09 | 1987-04-20 | Asahi Chem Ind Co Ltd | Construction of prefabricated pile |
| JP2533884B2 (en) * | 1987-07-31 | 1996-09-11 | 旭化成工業株式会社 | Construction method of columnar hardened body |
| JP2579324B2 (en) * | 1987-09-14 | 1997-02-05 | 旭化成工業株式会社 | Method of forming columnar cured body |
| JPH02311617A (en) * | 1989-05-25 | 1990-12-27 | Hatsurou Shiyouji | Construction of foundation pile |
| JPH0741233B2 (en) * | 1990-12-21 | 1995-05-10 | 株式会社間組 | Waste disposal method |
| KR20020030907A (en) * | 2000-10-18 | 2002-04-26 | 김상수 | Method of Constructing Pile With Basement |
| NL1016436C2 (en) * | 2000-10-18 | 2002-04-22 | Voorbij Groep Bv | Method for producing concrete pile in ground involves use of boring unit to create tubular opening in ground and after its withdrawal volume of opening is filled with concrete |
| KR20020035369A (en) * | 2000-11-06 | 2002-05-11 | 김상수 | Method of Constructing Pile With Basement |
| WO2006111786A1 (en) * | 2005-04-22 | 2006-10-26 | Bozidar Miljovski | A method for construction of piles and caissons and soil improvement by using rubber hoses |
| CN107130633A (en) * | 2017-07-12 | 2017-09-05 | 蔡荪萍 | A kind of steel tube concrete clay model bag stake is combined soil-baffling structure construction technology |
| CN113653041A (en) * | 2021-09-17 | 2021-11-16 | 河海大学 | Concrete pile with expanded diameter casing and construction method thereof |
-
1982
- 1982-03-11 JP JP3718182A patent/JPS58156620A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58156620A (en) | 1983-09-17 |
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