JPH08284159A - Connection structure of pile head - Google Patents
Connection structure of pile headInfo
- Publication number
- JPH08284159A JPH08284159A JP10900695A JP10900695A JPH08284159A JP H08284159 A JPH08284159 A JP H08284159A JP 10900695 A JP10900695 A JP 10900695A JP 10900695 A JP10900695 A JP 10900695A JP H08284159 A JPH08284159 A JP H08284159A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- pile
- concrete
- protrusions
- head
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は建築構造物等の基礎部
材、例えばフーチングや柱脚と地中に埋設された杭基礎
とを接合するための接合構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for joining a foundation member such as a building structure, for example, a footing or a column base and a pile foundation buried in the ground.
【0002】[0002]
【従来の技術】建築物を構成する基礎部材と杭基礎との
接合構造としては、柱脚に作用する荷重を杭に伝達させ
るために鉄筋等で補強した杭頭部を基礎スラブ内に貫入
した構造が種々提案されている。この接合構造はこれま
でに多く実施され、既に確立された技術である。2. Description of the Related Art As a joint structure between a foundation member constituting a building and a pile foundation, a pile head reinforced by a reinforcing bar or the like is inserted into a foundation slab in order to transmit a load acting on a column base to the pile. Various structures have been proposed. This joining structure has been implemented many times so far and is an established technology.
【0003】例えば、実開昭62−185747号公報
で提案された接合構造(以下、従来例Aという)は、杭
とフーチングを接合するためのものであり、図6に示す
ように鋼管杭7の杭頭部の内部に筒状鉄筋籠8を挿入
し、該鉄筋籠8の一部を杭頭部よりフーチング9内部に
突出させてコンクリート3を充填している。For example, the joint structure proposed in Japanese Utility Model Laid-Open No. 62-185747 (hereinafter referred to as Conventional Example A) is for joining a pile and a footing, and as shown in FIG. The cylindrical rebar cage 8 is inserted into the inside of the pile head, and part of the rebar cage 8 is projected from the pile head into the inside of the footing 9 to fill the concrete 3.
【0004】また、特開平3−51428号公報で提案
された接合構造(以下、従来例Bという)は、突起を内
面に有する鋼管の内部に柱を埋め込むことによって、基
礎スラブを介することなく柱脚荷重を直接杭に伝達させ
るものであり、図7と図8に示すように内面突起付き鋼
管1を杭鋼管とし、該内面突起付き鋼管1の内部に柱鉄
骨10を挿入した後にコンクリート3を充填する1柱1
杭形式の基礎構造である。In addition, the joint structure proposed in Japanese Patent Laid-Open No. 3-51428 (hereinafter referred to as Conventional Example B) is a pillar having a protrusion embedded in the inside of a steel pipe, so that the pillar does not have to interpose a base slab. The leg load is directly transmitted to the pile. As shown in FIGS. 7 and 8, the steel pipe 1 with the inner surface projection is used as a pile steel pipe, and the concrete 3 is inserted after the column steel frame 10 is inserted into the steel pipe 1 with the inner surface projection. 1 column to fill
It is a pile-type foundation structure.
【0005】[0005]
【発明が解決しようとする課題】従来例Aの杭基礎構造
では、杭頭部に鉄筋籠を使うことにより簡易に杭とフー
チングを接合し、杭頭部の耐力及び靱性を大きくするこ
とができる。また、従来例Bの構造形式では、基礎スラ
ブが不要であることから狭隘な都市部の工事では有効で
ある。In the pile foundation structure of the conventional example A, the pile and footing can be easily joined by using the reinforcing bar cage in the pile head, and the yield strength and toughness of the pile head can be increased. . Further, since the conventional slab structure type does not require a foundation slab, it is effective for construction in a narrow urban area.
【0006】しかしながら、従来例Aのように接合金物
を用いた杭基礎構造は、基礎スラブを介して杭に荷重を
伝えるものであるが、基礎スラブの築造は現場における
鉄筋工、型枠工等を必要とする、いわゆる労働集約型工
法であることから、昨今の建設現場における深刻な労働
者不足の状況下では、このような基礎構造を適用して行
くことはますます困難となりつつある。また、鉄筋の組
立加工のスペースを必要とするため、都市部の限られた
施工条件には適用が不適である。[0006] However, the pile foundation structure using the joint metal like the conventional example A is to transfer the load to the pile through the foundation slab, but the foundation slab is constructed by the steel reinforcement work, the formwork work etc. Since it is a so-called labor-intensive construction method that requires construction, it is becoming more and more difficult to apply such a basic structure under the current serious labor shortage at construction sites. Moreover, since it requires a space for assembling and processing the reinforcing bars, it is not suitable for the limited construction conditions in urban areas.
【0007】また、従来例Bの1柱1杭構造は、杭鋼管
の内部に柱を挿入する構造であるため、地盤条件から決
められる杭のサイズに対して、柱を埋め込むことにより
必要以上の杭径の選定を余儀なくさせられて、不経済な
設計になる場合がある。さらに、柱の据付け精度の向上
が困難であり、柱建込み時の作業性も良くない。In addition, since the one-column / one-pile structure of the conventional example B is a structure in which the columns are inserted inside the pile steel pipe, the columns are embedded more than necessary for the pile size determined from the ground conditions. The pile diameter may be forced to be selected, resulting in an uneconomical design. Further, it is difficult to improve the accuracy of installing the pillars, and the workability when installing the pillars is not good.
【0008】そこで本発明の目的は、従来技術のこのよ
うな欠点を解決して、現場での施工作業をできるだけ簡
素化し、限られた狭い施工スペースにおいても施工が容
易な杭頭部の接合構造を提供することである。Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the prior art, simplify the construction work on site as much as possible, and facilitate the construction even in a limited narrow construction space. Is to provide.
【0009】[0009]
【課題を解決するための手段】本発明の杭頭部の接合構
造では、外面突起付き鋼管を杭頭部に配置し、該外面突
起付き鋼管の頭部を地面あるいは掘削面より突出させ、
該突出部を前記外面突起付き鋼管の外径より大径の内面
突起付き鋼管の下部から内挿させ、該内面突起付き鋼管
の内部にコンクリートを充填して接合する。In the pile head joint structure of the present invention, a steel pipe with an outer surface projection is arranged on the pile head, and the head of the steel tube with an outer surface projection is projected from the ground or the excavated surface,
The projecting portion is inserted from the lower portion of the steel pipe with an inner surface protrusion having a diameter larger than the outer diameter of the steel pipe with the outer surface protrusion, and the inside of the steel pipe with the inner surface protrusion is filled with concrete and joined.
【0010】地面あるいは掘削面より突出される外面突
起付き鋼管は、打込み式鋼管杭、ソイルセメント合成鋼
管杭、場所打ち鋼管コンクリート杭のいずれかで形成す
るのが好適である。It is preferable that the steel pipe with an outer surface projection protruding from the ground or the excavated surface is formed of any of a driven steel pipe pile, a soil cement synthetic steel pipe pile, and a cast-in-place concrete pipe pile.
【0011】[0011]
【実施例】図1は打込み式鋼管杭に本発明の杭頭部の接
合構造を適用した合成杭の一例を示す。外面突起付き鋼
管杭2が頭部を掘削面5より突出させた状態で地中に打
ち込み埋設される。次に、外面突起付き鋼管杭2の突出
部の直径より大径の内面突起付き鋼管1が、外面突起付
き鋼管杭2の突出部の外側に嵌められる。そして、コン
クリート3が内面突起付き鋼管1の内部に充填される。EXAMPLE FIG. 1 shows an example of a composite pile in which the pile head joint structure of the present invention is applied to a driven steel pipe pile. The steel pipe pile 2 with the outer surface projection is driven and buried in the ground with the head portion protruding from the excavation surface 5. Next, the steel pipe with an inner surface projection 1 having a diameter larger than the diameter of the protruding portion of the steel pipe pile with an outer surface projection 2 is fitted to the outside of the protruding portion of the steel pipe pile with an outer surface projection 2. Then, the concrete 3 is filled inside the steel pipe 1 with the inner surface projection.
【0012】このように外面突起付き鋼管杭2の杭頭部
を掘削面5より突出させ、内面突起付き鋼管1の内部に
挿入して置くと、内面突起付き鋼管1の中にコンクリー
ト3を充填した際に、コンクリート3と外面突起付き鋼
管杭2の杭頭部および内面突起付き鋼管1とが強固に付
着され、高い付着強度が確保される。In this way, when the pile head of the steel pipe pile 2 with the outer surface projection is projected from the excavation surface 5 and inserted and placed inside the steel pipe 1 with the inner surface protrusion, the concrete 3 is filled into the steel pipe 1 with the inner surface protrusion. In doing so, the concrete 3 and the pile head of the steel pipe pile 2 with an outer surface protrusion and the steel pipe 1 with an inner surface protrusion are firmly attached, and high adhesion strength is secured.
【0013】内面突起付き鋼管1に対する外面突起付き
鋼管杭2の突出部の貫入長さは、外面突起付き鋼管2の
大きさ、使用するコンクリート強度によって適宜決定す
ればよく、特に限定されるものではない。The penetration length of the protruding portion of the steel pipe with outer surface projection 2 into the steel pipe with inner surface projection 1 may be appropriately determined according to the size of the steel pipe 2 with outer surface projection and the strength of concrete to be used, and is not particularly limited. Absent.
【0014】また、外面突起付き鋼管2や内面突起付き
鋼管1に設ける突起4は、いかなる形状のものであって
も良いけれども、図4に示すようスパイラル状に形成し
たり、図5に示すように縞状に形成すると、充填された
コンクリート3と外面突起付き鋼管2及び内面突起付き
鋼管1との一体化がより的確になされる。Further, although the projections 4 provided on the steel pipe 2 with outer surface projections and the steel tube 1 with inner surface projections may have any shape, they may be formed in a spiral shape as shown in FIG. 4 or as shown in FIG. When the striped shape is formed, the filled concrete 3 and the steel pipe 2 with the outer surface protrusion and the steel pipe 1 with the inner surface protrusion are integrated more accurately.
【0015】なお、図1では地面6よりある深さまで掘
削した掘削面5から外面突起付き鋼管2の頭部を突出さ
せているが、場合によっては掘削なしで地面6から外面
突起付き鋼管2の頭部を突出させ、該突出頭部を覆う形
で内面突起付き鋼管1を嵌めて接合させることもでき
る。In FIG. 1, the head of the steel pipe 2 with an outer surface projection is projected from the excavation surface 5 excavated to a certain depth from the ground 6. However, in some cases, the steel pipe 2 with an outer surface projection 2 is not excavated from the ground 6. It is also possible to project the head part and fit and join the steel pipe 1 with the inner surface projection so as to cover the projecting head part.
【0016】また、地中にほとんどを埋設させる外面突
起付き鋼管2は、図1に示したような打込み式の鋼管杭
のみならず、図2に示すようなソイルセメント合成鋼管
杭や図3に示すような場所打ち鋼管コンクリート杭等で
形成することもできる。Further, the steel pipe 2 with the outer surface projection which is almost buried in the ground is not limited to the driving type steel pipe pile as shown in FIG. 1, but also the soil cement synthetic steel pipe pile as shown in FIG. It can also be formed from cast-in-place steel pipe concrete piles as shown.
【0017】[0017]
【発明の効果】以上のように本発明の杭頭部の接合構造
では、外面突起付き鋼管の頭部を地面あるいは掘削面よ
り突出させ、外面突起付き鋼管よりも大径の内面突起付
き鋼管で外面突起付き鋼管の該突出部を覆い、内面突起
付き鋼管の内部にコンクリートを充填するので、基礎ス
ラブが必要でなくなり、従来鉄筋工や型枠工に必要であ
った作業員が不要となる。また、外面突起付き鋼管の杭
頭部を上部の内面突起付き鋼管に挿入させるため、鉄筋
篭等の接合用補強金物も不要化できる。INDUSTRIAL APPLICABILITY As described above, in the pile head joint structure of the present invention, the head portion of the steel pipe with the outer surface projection is projected from the ground or the excavated surface, and the steel pipe with the inner surface projection having a diameter larger than that of the steel tube with the outer surface projection is used. Since the projection of the steel pipe with the outer surface projection is covered and the inside of the steel pipe with the inner surface projection is filled with concrete, the foundation slab is not required, and the worker conventionally required for the reinforcing bar work and the formwork work becomes unnecessary. Further, since the pile head of the steel pipe with the outer surface projection is inserted into the steel pipe with the inner surface projection on the upper portion, the reinforcing metal for joining such as the rebar cage can be eliminated.
【0018】上部に嵌められる内面突起付き鋼管は工場
製品であり、現場には組立加工場が不要であるため、施
工スペースの節減が可能であり、これは特に都市部の工
事では有効である。また、1柱1杭形式の基礎構造のよ
うに必要杭径の不経済な増大をもたらすことがなく、さ
らに柱建込み・据付け時の作業性の悪さを解消すること
もできる。Since the steel pipe with the inner surface projection fitted in the upper part is a factory product and does not require an assembly processing site on site, it is possible to save the construction space, which is particularly effective in the construction in urban areas. Further, unlike the one-pillar-one-pile type foundation structure, it does not cause an uneconomical increase in the required pile diameter, and it is also possible to eliminate the poor workability at the time of building and installing the column.
【図1】本発明の接合構造を打込み鋼管杭に適用した一
例を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing an example in which the joining structure of the present invention is applied to a driven steel pipe pile.
【図2】本発明の接合構造をソイルセメント合成杭に適
用した一例を示す縦断面図である。FIG. 2 is a vertical sectional view showing an example in which the joint structure of the present invention is applied to a soil cement composite pile.
【図3】本発明の接合構造を場所打鋼管コンクリート杭
に適用した一例を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing an example in which the joint structure of the present invention is applied to a cast-in-place steel pipe concrete pile.
【図4】本発明の接合構造に使用される内面突起付き鋼
管の一例を示し、内面突起はスパイラル状に形成されて
いる。FIG. 4 shows an example of a steel pipe with an inner surface protrusion used in the joint structure of the present invention, in which the inner surface protrusion is formed in a spiral shape.
【図5】本発明の接合構造に使用される内面突起付き鋼
管の一例を示し、内面突起は縞状に形成されている。FIG. 5 shows an example of a steel pipe with an inner surface protrusion used in the joint structure of the present invention, in which the inner surface protrusion is formed in a striped shape.
【図6】従来の鉄筋籠で接合される杭頭部とフーチング
の接合構造を示す縦断面図である。FIG. 6 is a vertical cross-sectional view showing a joint structure of a pile head and a footing joined by a conventional rebar cage.
【図7】従来の1柱1杭基礎形式の接合構造を示す平面
図である。FIG. 7 is a plan view showing a conventional one-column / one-pile foundation type joint structure.
【図8】図7の接合構造の縦断面図である。8 is a vertical cross-sectional view of the joint structure of FIG.
1 内面突起付き鋼管 2 外面突起付き鋼管 3 コンクリート 4 内面または外面の突起 5 掘削面 6 地面 7 鋼管杭 8 鉄筋籠 9 フーチング 10 鉄骨柱 11 ソイルセメント 12 コンクリート 1 Steel pipe with inner surface protrusion 2 Steel pipe with outer surface protrusion 3 Concrete 4 Inner or outer surface protrusion 5 Excavation surface 6 Ground 7 Steel pipe pile 8 Rebar cage 9 Footing 10 Steel column 11 Soil cement 12 Concrete
Claims (2)
外面突起付き鋼管の頭部を地面あるいは掘削面より突出
させ、該突出部を外面突起付き鋼管の外径より大径の内
面突起付き鋼管の下部から内挿させ、該内面突起付き鋼
管の内部にコンクリートを充填して接合することを特徴
とする杭頭部の接合構造。1. A steel pipe with an outer surface protrusion is arranged on a pile head, the head of the steel pipe with an outer surface protrusion is projected from the ground or an excavated surface, and the protruding portion is an inner surface having a diameter larger than the outer diameter of the steel pipe with an outer surface protrusion. A joint structure for pile heads, characterized in that the steel pipe with protrusions is inserted from the lower part, and the inside of the steel pipes with protrusions is filled with concrete and joined.
る外面突起付き鋼管が、打込式鋼管杭、ソイルセメント
合成鋼管杭または場所打ち鋼管コンクリート杭のいずれ
かで形成されることを特徴とする請求項1の杭頭部の接
合構造。2. The steel pipe with an outer surface protrusion for projecting the head from the ground or the excavated surface is formed of either a drive-in steel pipe pile, a soil cement synthetic steel pipe pile or a cast-in-place concrete pipe pile. The joint structure for a pile head according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10900695A JPH08284159A (en) | 1995-04-10 | 1995-04-10 | Connection structure of pile head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10900695A JPH08284159A (en) | 1995-04-10 | 1995-04-10 | Connection structure of pile head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08284159A true JPH08284159A (en) | 1996-10-29 |
Family
ID=14499185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10900695A Pending JPH08284159A (en) | 1995-04-10 | 1995-04-10 | Connection structure of pile head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08284159A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001295291A (en) * | 2000-04-10 | 2001-10-26 | Nkk Corp | Joining method of column and pile |
WO2012118186A1 (en) * | 2011-03-02 | 2012-09-07 | 新日本製鐵株式会社 | Connecting structure for connecting steel pipe pile and steel outer pipe |
CN102733407A (en) * | 2011-04-01 | 2012-10-17 | 上海同济启明星科技发展有限公司 | Two-ring grouted single pile foundation |
WO2013082031A1 (en) | 2011-11-28 | 2013-06-06 | Keystone Engineering, Inc. | Grouted cylindrical connection utilizing bearing surfaces for offshore monopile foundations |
CN104088285A (en) * | 2014-07-24 | 2014-10-08 | 上海强劲地基工程股份有限公司 | Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure |
CN104674845A (en) * | 2015-02-09 | 2015-06-03 | 中国建筑第八工程局有限公司 | Auxiliary construction method for hydraulic vibration reverse inserting column |
CN105369800A (en) * | 2015-11-30 | 2016-03-02 | 中国建筑土木建设有限公司 | One-step forming construction method for inserting steel pipe column into cast-in-situ bored pile in pilot tunnel |
JP2016132923A (en) * | 2015-01-20 | 2016-07-25 | 新日鐵住金株式会社 | Projecting structure |
CN106013132A (en) * | 2016-05-23 | 2016-10-12 | 王继忠 | Diameter-varied composite pile |
CN106087990A (en) * | 2016-08-16 | 2016-11-09 | 国家电网公司 | Movable reinforcement cage installs equipment |
CN110055982A (en) * | 2019-04-24 | 2019-07-26 | 兰州理工大学 | A kind of novel anchor holding frame lattice miniature steel pipe pile supporting system |
CN110055974A (en) * | 2019-04-24 | 2019-07-26 | 兰州理工大学 | A kind of recyclable miniature steel pipe pile soil nailing combined support structure and its recovery method |
-
1995
- 1995-04-10 JP JP10900695A patent/JPH08284159A/en active Pending
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001295291A (en) * | 2000-04-10 | 2001-10-26 | Nkk Corp | Joining method of column and pile |
WO2012118186A1 (en) * | 2011-03-02 | 2012-09-07 | 新日本製鐵株式会社 | Connecting structure for connecting steel pipe pile and steel outer pipe |
JP5136726B2 (en) * | 2011-03-02 | 2013-02-06 | 新日鐵住金株式会社 | Monopile foundation for structures that generate vibration. |
EP2672012A4 (en) * | 2011-03-02 | 2015-02-25 | Nippon Steel & Sumitomo Metal Corp | Connecting structure for connecting steel pipe pile and steel outer pipe |
CN102733407A (en) * | 2011-04-01 | 2012-10-17 | 上海同济启明星科技发展有限公司 | Two-ring grouted single pile foundation |
WO2013082031A1 (en) | 2011-11-28 | 2013-06-06 | Keystone Engineering, Inc. | Grouted cylindrical connection utilizing bearing surfaces for offshore monopile foundations |
US8888414B2 (en) | 2011-11-28 | 2014-11-18 | Keystone Engineering, Inc. | Grouted cylindrical connection utilizing bearing surfaces for offshore monopile foundations |
EP2785921A4 (en) * | 2011-11-28 | 2015-07-22 | Keystone Engineering Inc | Grouted cylindrical connection utilizing bearing surfaces for offshore monopile foundations |
CN104088285A (en) * | 2014-07-24 | 2014-10-08 | 上海强劲地基工程股份有限公司 | Method for constructing cement soil mixing pile and concrete pile meshed foundation pit supporting structure |
JP2016132923A (en) * | 2015-01-20 | 2016-07-25 | 新日鐵住金株式会社 | Projecting structure |
CN104674845A (en) * | 2015-02-09 | 2015-06-03 | 中国建筑第八工程局有限公司 | Auxiliary construction method for hydraulic vibration reverse inserting column |
CN105369800A (en) * | 2015-11-30 | 2016-03-02 | 中国建筑土木建设有限公司 | One-step forming construction method for inserting steel pipe column into cast-in-situ bored pile in pilot tunnel |
CN106013132A (en) * | 2016-05-23 | 2016-10-12 | 王继忠 | Diameter-varied composite pile |
CN106013132B (en) * | 2016-05-23 | 2018-06-08 | 王继忠 | A kind of reducing built pile |
CN106087990A (en) * | 2016-08-16 | 2016-11-09 | 国家电网公司 | Movable reinforcement cage installs equipment |
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