JPH11140887A - Method for anchoring foundation pile to foundation and pile anchor therefor - Google Patents
Method for anchoring foundation pile to foundation and pile anchor thereforInfo
- Publication number
- JPH11140887A JPH11140887A JP30589097A JP30589097A JPH11140887A JP H11140887 A JPH11140887 A JP H11140887A JP 30589097 A JP30589097 A JP 30589097A JP 30589097 A JP30589097 A JP 30589097A JP H11140887 A JPH11140887 A JP H11140887A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- foundation
- concrete
- pile head
- 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.)
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Links
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Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、基礎杭の杭頭部の
基礎定着工法と、その工法に使用する杭定着体に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for anchoring a pile head of a foundation pile and a pile anchoring body used in the method.
【0002】[0002]
【従来の技術】構築物の基礎部分の施工方法として、一
般的に基礎杭で支持する構造が採用されており、基礎杭
の杭頭部に基礎に定着する工法として、図6の如く杭頭
部1aをベースラインL2より10cm程度露出し、杭
頭部1aの中空部2内に縦筋e1と帯筋e2から成る組
鉄筋Eの下半部を嵌挿し、これを中詰コンクリートC2
で杭頭部1aに固定し、杭頭部1aの露出部と組鉄筋E
の上半部を基礎10に定着する工法(以下、A型工法と
する)と、図7の如く杭頭部1aをベースラインL2よ
り基礎杭の外径程度露出し得るように、基礎10のコン
クリート厚さを深くし、杭頭部1aを基礎10に定着す
る工法(以下、B型工法とする)が知られている。2. Description of the Related Art As a construction method of a foundation portion of a structure, a structure supported by a foundation pile is generally employed. As a construction method fixed to the foundation of the foundation pile, the pile head is used as shown in FIG. 1a is exposed by about 10 cm from the base line L2, and the lower half of the braided reinforcing bar E composed of the vertical bar e1 and the band bar e2 is inserted into the hollow portion 2 of the pile head 1a, and this is filled with the concrete C2.
And fixed to the pile head 1a with the exposed portion of the pile head 1a and the reinforcing bar E
A method of fixing the upper half of the base 10 to the foundation 10 (hereinafter referred to as an A-type method) and a method of setting the foundation 10 so that the pile head 1a can be exposed from the base line L2 to an outer diameter of the foundation pile as shown in FIG. There is known a method of deepening the concrete thickness and fixing the pile head 1a to the foundation 10 (hereinafter, referred to as a B-type method).
【0003】[0003]
【発明が解決しようとする課題】近年、構築物の耐震性
が特に求められるようになり、それに伴ない従来技術の
A型工法では、杭頭固定度が小さく、耐震性が弱い難点
があった。またB型工法では根切り面を深く掘下げ、基
礎を厚くする必要があるため、その分、土留め工事も多
くなるし、残土処理や埋戻しも増大するばかりか、雨天
が続く場合には雨水や涌水の水替作業も加わり、更に根
切り底面より大きく突出する杭頭部によって、基礎の割
栗石締固めや、捨コンクリート、型枠組、補強筋等の作
業性も悪くなる。しかもコンクリートの使用量、基礎に
対する補強筋の使用量も増大する等、多大な時間と労力
を必要とし、構築費用も増大する大きな問題点を有して
いる。In recent years, the seismic resistance of the building has been particularly required, and the conventional A-type construction method has a problem that the pile head fixing degree is small and the seismic resistance is weak. In addition, the B-type method requires deep excavation of the root cutting surface and thickening of the foundation, which increases the amount of earth retaining work, increases the amount of remaining soil treatment and backfilling, and increases the amount of rainwater when rain continues. In addition to the water refilling work, the pile head projecting more than the bottom of the root cuts, and the workability of compacting the foundation, crushed concrete, formwork, reinforcing bars, etc. also deteriorates. In addition, there is a large problem that a large amount of time and labor is required, such as an increase in the amount of concrete used and the amount of reinforcing bars used for the foundation, and the construction cost is also increased.
【0004】従来のA型工法とB型工法の問題点を解決
する手段として、出願人は先に特願平6−264480
号(特開平8−105066号)を発明(以下、先願発
明と称す)した。先願発明は図8の如く、地盤Bに貫入
された基礎杭1の杭頭部1aの外周囲に根切り凹部4を
掘下げ、該根切り凹部4に土留め具Gを挿入し、根切り
凹部4を土留めした後、土留め具Gと杭頭部1aの間に
生じた空間部Aに組鉄筋Eの下半部を嵌挿し、その空間
部Aに基礎10の打設時にコンクリートを流し込み、杭
頭部1aの外周囲に、基礎杭1と同様のRC構造部を形
成するもので、A型工法より耐震性に優れ、且つB型工
法より基礎の根切り量を少なくし得る特徴を有してい
る。As means for solving the problems of the conventional A-type method and B-type method, the applicant has previously filed Japanese Patent Application No. Hei 6-264480.
No. (JP-A-8-105066) was invented (hereinafter referred to as the prior invention). In the prior invention, as shown in FIG. 8, a root cutting recess 4 is dug down around the outer periphery of the pile head 1a of the foundation pile 1 penetrating into the ground B, and a soil fastener G is inserted into the root cutting recess 4, and the root cutting is performed. After retaining the concave portion 4, the lower half of the reinforcing bar E is inserted into the space A formed between the earth retaining member G and the pile head 1a, and concrete is poured into the space A when the foundation 10 is cast. Casting, forming the same RC structure as the foundation pile 1 around the pile head 1a. It is superior in seismic resistance to the A-type method and can reduce the amount of root excavation of the foundation compared to the B-type method. have.
【0005】[0005]
【発明が解決しようとする課題】そこで本発明のうち請
求項1記載の発明は、先願発明の研究を進め、先願発明
より根切り量が少なくしかも耐震性に優れ、且つ施工を
簡略化し、施工期間を短縮し、構築費用を軽減し得る基
礎杭の基礎定着工法を提供することを目的としたもので
ある。請求項2記載の発明は、請求項1の発明に使用す
る杭定着体を提供することを目的としたものである。Therefore, the invention of claim 1 of the present invention has advanced the research of the invention of the prior application, and has a smaller amount of root cutting, superior seismic resistance, and simplified construction than the invention of the prior application. It is an object of the present invention to provide a foundation pile anchoring method capable of shortening a construction period and reducing construction costs. The second aspect of the present invention aims to provide a pile anchoring body used in the first aspect of the present invention.
【0006】[0006]
【課題を解決するための手段】本発明は上記目的の基礎
杭の基礎定着工法を達成するために、請求項1記載とし
て、地盤に貫入された基礎杭の杭頭部の外周囲にのみ根
切り凹部を掘下げ、根切り凹部内に杭定着体を嵌挿し、
杭頭部の中空部内へのコンクリートの落ち込みを防ぎ、
基礎の打設時に、杭頭部と杭定着体との間に生じた空間
部にコンクリートを流し込み、杭頭部の外周囲に、杭定
着体とコンクリートとから成るSC構造部を形成すると
共に、杭定着体の上部が基礎に埋設し、RC構造の基礎
と一体を成す。ここで根切り凹部の掘下げとは、割栗石
敷ラインまでの根切り地業後に、杭頭部の外周囲の割栗
石敷ラインを更に深く掘下げ、具体的には、根切り凹部
を杭定着体の嵌挿深さに掘下げる手段の全てをいう。こ
こで基礎とは、上部構造からの加重を地盤に伝える下部
構造の総称で、独立基礎、布基礎、複合基礎、べた基
礎、べた基礎のつなぎばりに囲まれて設ける基礎スラブ
等をいう。ここでSC構造とは、鋼管の内部にコンクリ
ートを充填したものをいい、RC構造とは、鉄筋コンク
リート構造をいう。ここで基礎杭とは、構造物の加重
を、基礎から地盤に伝える杭であれば、形状・構造・材
質等は自由であるが、耐震性等を考慮すれば、PHC杭
(プレストレストコンクリート杭)、PRC杭(プレス
トレスト鉄筋コンクリート杭)を用いることが望まし
く、これを水盛、やりかた後、地盤の所定位置に貫入す
る。ここでPHC杭とは、高強度コンクリートにより高
軸方向耐力を有する。また軸力作用時の曲げ耐力はプレ
ストレス量に応じて、PC杭よりも著しく大きい。ここ
でPRC杭とは、高強度プレストレスコンクリートに異
形鉄筋等で補強した杭で、螺旋筋の横拘束により、高曲
げ耐力を有し変形能力にも優れている。According to the present invention, in order to achieve the above-mentioned object, a method of fixing a foundation pile to a foundation pile, the present invention is characterized in that roots are formed only around the outer periphery of the pile head of the foundation pile penetrated into the ground. Dig down the cutting recess, insert the pile anchor into the root cutting recess,
Prevent concrete from falling into the hollow part of the pile head,
At the time of placing the foundation, concrete was poured into the space created between the pile head and the pile anchor, and an SC structure consisting of the pile anchor and concrete was formed around the outside of the pile head, The upper part of the pile anchor is buried in the foundation and forms an integral part with the foundation of the RC structure. The digging of the root-cutting recess here means that after the root-cutting ground operation up to the split-cut stone-paving line, the split-cut-stone-paving line around the outside of the pile head is dug deeper. Means all means for digging to the depth of insertion. Here, the foundation is a general term for the lower structure that transmits the load from the upper structure to the ground, and refers to an independent foundation, a cloth foundation, a composite foundation, a solid foundation, a foundation slab provided between the joints of the solid foundation, and the like. Here, the SC structure refers to a structure in which concrete is filled in a steel pipe, and the RC structure refers to a reinforced concrete structure. Here, the foundation pile is a pile that transmits the load of the structure from the foundation to the ground, but the shape, structure, material, etc. are free, but in consideration of seismic resistance etc., PHC pile (prestressed concrete pile) , PRC piles (prestressed reinforced concrete piles) are desirably used. Here, the PHC pile has high axial strength due to high-strength concrete. The bending strength under the action of the axial force is significantly larger than that of the PC pile according to the amount of prestress. Here, the PRC pile is a pile reinforced with high-strength prestressed concrete by deformed reinforcing bars or the like, and has high bending strength and excellent deformability due to the lateral constraint of the spiral.
【0007】また本発明は上記目的の基礎定着工法に用
いる杭定着体を達成するために、請求項2記載として、
根切り凹部と杭頭部の間に嵌挿する補強環を設け、補強
環より基礎内に定着する補強筋を突出し、補強環の内周
から杭頭部に向けて間隔保持部を突出するもので、補強
環は根切り凹部の土留めと、基礎の打設時に流し込まれ
るコンクリートの型枠を兼ね、且つコンクリートの固化
により杭頭部の外周囲にSC構造部を形成し、補強筋は
基礎に埋設し、RC構造の基礎の一部と成る。In order to achieve the above-mentioned object of the present invention, a pile anchor used in the foundation anchoring method is provided.
Providing a reinforcing ring to be inserted between the root recess and the pile head, protruding reinforcing bars fixed in the foundation from the reinforcing ring, and protruding the spacing holding part from the inner circumference of the reinforcing ring toward the pile head In addition, the reinforcement ring also serves as the retaining of the root cutting recess and the concrete form poured into the foundation, and forms the SC structure around the outside of the pile head by solidifying the concrete. And become part of the foundation of the RC structure.
【0008】[0008]
【発明の実施の形態】先ず本発明による基礎杭の基礎定
着工法を図1と図2に基づき説明する。地盤Bに貫入さ
れた基礎杭1の杭頭部1aの外周囲に根切り凹部4を掘
下げて形成し、該根切り凹部4内に杭定着体5を嵌挿
し、杭頭部1aの中空部2を塞ぎ体3で塞ぎ、基礎10
のコンクリート打設時に、杭頭部1aと杭定着体5との
間に生じた空間部aにコンクリートを流し込んで固化す
るもので、杭定着体5は根切り凹部4の土留めと、コン
クリートを流し込むための型枠を兼ね、固化したコンク
リートと共に杭頭部1aの外周囲にSC構造部11を形
成し、且つ杭定着体5の上部が基礎10に埋設し、RC
構造の基礎10の一部となる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a method of anchoring a foundation pile according to the present invention will be described with reference to FIGS. A root cutting recess 4 is formed by digging around the outer periphery of the pile head 1a of the foundation pile 1 penetrating into the ground B, and a pile anchoring body 5 is inserted into the root cutting recess 4 to form a hollow portion of the pile head 1a. 2 is plugged with plug 3 and foundation 10
When concrete is poured, concrete is poured into a space a formed between the pile head 1a and the pile anchor 5 to solidify it. The SC structure 11 is also formed around the pile head 1a together with the solidified concrete together with the formwork for pouring, and the upper part of the pile anchor 5 is buried in the foundation 10,
Become part of the foundation 10 of the structure.
【0009】根切り凹部4は割栗石敷ラインL1の地業
後に、杭頭部1aの外周囲の割栗石敷ラインL1を更に
深く掘下げ、杭頭部1aの外周囲に略ドーナツ状の根切
り凹部4、或いは底面より上向きに広口となる逆円錐台
形の根切り凹部4を形成するもので、杭定着体5を嵌挿
した後、割栗石敷ラインL1に割栗石Dをし、該割栗石
Dの上に捨コンクリートC1をして杭定着体5を押固
め、捨コンクリートC1にてベースラインL2を形成す
る。根切り凹部4の根切り幅hは、杭定着体5が杭頭部
1aとの間に空間部aを形成し、該空間部aに流し込む
コンクリートによってSC構造部11を形成するので、
先願発明における根切り幅Hの略1/2程度、例えば組
鉄筋Eの縦筋e1の配設位置程度となる。[0009] The root cutting recess 4 digs further deeply into the outer periphery of the pile head 1a after the ground work of the splitter stone line L1 and cuts the donut-like root around the outer periphery of the pile head 1a. The concave portion 4 or the inverted truncated cone-shaped root concave portion 4 having a wide mouth upward from the bottom surface is formed. After the pile anchoring body 5 is inserted, the split stone D is placed on the split stone floor L1. D. Concrete C1 is placed on D, and the pile anchoring body 5 is compacted, and a baseline L2 is formed with the discarded concrete C1. The root cutting width h of the root cutting recess 4 is such that the pile anchoring body 5 forms the space part a with the pile head 1a and the SC structure part 11 is formed by concrete poured into the space part a.
It is about 1/2 of the root cutting width H in the prior invention, for example, about the arrangement position of the vertical bar e1 of the braided reinforcing bar E.
【0010】杭定着体5は下半部を根切り凹部4に嵌挿
し、根切り凹部4の内周囲を土留めし、且つ杭頭部1a
との間に空間部aを形成し、基礎10の打設時にSC構
造部11の型枠となり、空間部aに流し込んだコンクリ
ートの固化により、コンクリートと共にSC構造部11
を形成し、上半部を基礎10に埋設し、RC構造の基礎
10の一部となる。基礎杭1の中空部2を塞ぐ塞ぎ体3
は、基礎10の打設前であれば、その取付け順序は自由
である。The lower part of the pile anchor 5 is inserted into the root cutting recess 4, the inner periphery of the root cutting recess 4 is earthed, and the pile head 1a is fixed.
A space a is formed between the SC structure 11 and the formwork of the SC structure 11 when the foundation 10 is cast. The concrete poured into the space a is solidified to form the SC structure 11 together with the concrete.
Is formed and the upper half is buried in the foundation 10 to form a part of the foundation 10 of the RC structure. Closure body 3 for closing hollow part 2 of foundation pile 1
Can be installed in any order as long as the foundation 10 is not yet placed.
【0011】次いで基礎杭の基礎定着工法に用いる本発
明の杭定着体の構造を実施形態の図3と図4に基づき説
明する。杭定着体5は杭頭部1aと根切り凹部4の間に
嵌挿する補強環6と、補強環6より上方に突出して基礎
10内に定着する補強筋7と、補強環6と杭頭部1aの
間隔を保つ間隔保持部8とを備えている。補強環6は根
切り凹部4の内周囲より一回り小径の長尺鋼管より切断
するか、鋼板を根切り凹部4の内周囲より一回り小径の
円筒形、又は略円筒形に溶接したもので、根切り凹部4
を土留めし、杭頭部1aとの間に空間部aを形成し、コ
ンクリートを流し込む型枠となり、コンクリートの固化
によりSC構造部11を形成する。補強筋7は下半部を
補強環6の内周面に適宜間隔で固着し、上半部を補強環
6より上方に突出し、RC構造の基礎10の一部とな
る。間隔保持部8は補強環6の内周面に適宜間隔で設け
るもので、空間部aへのコンクリートの流し込を妨げな
いよう設ける必要がある。Next, the structure of the pile anchor of the present invention used in the foundation anchoring method of the foundation pile will be described with reference to FIGS. 3 and 4 of the embodiment. The pile anchoring body 5 includes a reinforcing ring 6 inserted between the pile head 1a and the root cutting recess 4, a reinforcing bar 7 projecting upward from the reinforcing ring 6 and fixed in the foundation 10, a reinforcing ring 6 and the pile head. And an interval holding section 8 for maintaining an interval between the sections 1a. The reinforcing ring 6 is formed by cutting a long steel pipe having a diameter slightly smaller than the inner circumference of the root cutting recess 4 or welding a steel plate into a cylindrical shape or a substantially cylindrical shape having a diameter slightly smaller than the inner circumference of the root cutting recess 4. , Root cutting recess 4
To form a space a between the pile head 1a and a mold for pouring concrete. The SC structure 11 is formed by solidifying the concrete. Reinforcing bars 7 have the lower half fixed to the inner peripheral surface of the reinforcing ring 6 at appropriate intervals, and the upper half protrudes above the reinforcing ring 6 to become a part of the foundation 10 of the RC structure. The space holding portions 8 are provided at appropriate intervals on the inner peripheral surface of the reinforcing ring 6, and need to be provided so as not to prevent the concrete from flowing into the space a.
【0012】[0012]
【実施例】補強環6の内周面を粗面にする等すれば、コ
ンクリートとの付着が向上し、SC構造部11の一体化
が増進される。また補強筋7には丸棒を用いることも可
能であるが、コンクリートとの付着がよい異径筋を用い
ることが好ましいし、補強環6に対する固着手段とし
て、接着剤を用いることも可能であるが、溶接よる固着
が好ましい。間隔保持部8は補強環6より杭頭部1aに
向けて突出するものであれば、形状や構造等は自由であ
るが、補強筋7の下端部を屈曲し、屈曲部を間隔保持部
8となし、或いは間隔保持部8を別に形成し、補強環6
に溶接するも可能である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS If the inner peripheral surface of the reinforcing ring 6 is roughened, the adhesion to concrete is improved, and the integration of the SC structure 11 is enhanced. It is also possible to use a round bar as the reinforcing bar 7, but it is preferable to use a different-diameter bar having good adhesion to concrete, and it is also possible to use an adhesive as a fixing means to the reinforcing ring 6. However, fixation by welding is preferred. As long as the space holding portion 8 protrudes from the reinforcing ring 6 toward the pile head 1a, the shape, structure, and the like are free, but the lower end of the reinforcing bar 7 is bent, and the bent portion is connected to the space holding portion 8 Or the space holding portion 8 is formed separately, and the reinforcing ring 6
Welding is also possible.
【0013】塞ぎ体3は中空部2の内径とほぼ同一の円
盤状を成し、杭頭部1aの上方より針金等の吊具によっ
て吊下げて塞ぐか、風船状の塞ぎ体3を中空部2の中で
膨らませて塞ぎ、或いは図5の如く杭頭部1aの上に蓋
の如く被せて中空部2を塞ぐもので、中空部2内に挿入
して塞ぐ場合、塞ぎ体3まで中詰コンクリートC2が充
填される。この塞ぎ体3は、中空部2を完全に塞ぐ必要
はなく、コンクリートが中空部2内に流れ込まない程度
でもよい。The closing member 3 has a disk shape substantially the same as the inner diameter of the hollow portion 2 and is closed by suspending it from above the pile head 1a with a hanging tool such as a wire, or the balloon-like closing member 3 is hollow. In order to close the hollow part 2 by inflating it in the space 2 or covering it like a lid on the pile head 1a as shown in FIG. Concrete C2 is filled. The closing body 3 does not need to completely cover the hollow portion 2, and may be of such a degree that concrete does not flow into the hollow portion 2.
【0014】[0014]
【発明の効果】本発明の基礎杭の基礎定着工法は上記の
とおりであるから、次に記載する効果を奏する。根切り
凹部の掘下げは、先願発明の略1/2程度であるから、
その分、根切り量が少なくてすみ、残土処理や土留め作
業等が簡単容易になる。しかも根切り凹部に嵌挿した杭
定着体は、根切り凹部を土留めし、杭頭部との間に空間
部を形成し、基礎の打設時に型枠となり、且つ杭頭部の
外周囲に、固化したコンクリートとSC構造部を形成す
るので、A型工法、及び先願発明より大きな耐震性を発
揮する。また根切りの少量化、土留め作業の簡略化等に
よって、基礎の定着施工がスムーズになり、人件費の大
幅な削減と工期の短縮も可能となる。As described above, the method of anchoring a foundation pile according to the present invention is as described above. Since the digging of the root cutting recess is about 1/2 of the prior invention,
As a result, the amount of root cutting is small, and the remaining soil treatment and earth retaining work can be easily and easily performed. In addition, the pile anchoring body inserted into the root cutting recess secures the root cutting recess, forms a space between the pile head and the pile, serves as a formwork when setting the foundation, and the outer periphery of the pile head. In addition, since the SC structure is formed with the solidified concrete, it exhibits greater seismic resistance than the A-type construction method and the prior invention. In addition, by reducing the amount of root cutting and simplifying the earth retaining work, the anchoring work of the foundation becomes smooth, and the labor cost and the construction period can be greatly reduced.
【0015】本発明の杭定着体は上記のとおりであるか
ら、次に記載する効果を奏する。前記基礎定着工法に本
発明の杭定着体を使用すれば、補強環は先ず根切り凹部
を土留めし、杭頭部との間に空間部を形成し、基礎の打
設時に型枠となり、次に固化したコンクリートと共に、
杭頭部の外周囲にSC構造部を形成し、基礎杭と基礎の
定着を強力にする。また補強筋は基礎に埋設し、RC構
造の基礎の一部と成る。しかも杭定着体は工場で大量生
産できるので、安価に提供し得る利点もある。Since the pile anchor of the present invention is as described above, the following effects can be obtained. If the pile anchoring body of the present invention is used for the foundation anchoring method, the reinforcing ring first secures the root cutting recess, forms a space between the pile head and the pile head, and forms a formwork when the foundation is cast. Next, along with the solidified concrete,
An SC structure is formed around the outside of the pile head to strengthen the anchorage between the foundation pile and the foundation. Reinforcing bars are embedded in the foundation and become part of the foundation of the RC structure. In addition, since pile anchors can be mass-produced in factories, there is an advantage that they can be provided at low cost.
【図1】(A)(B)(C)本発明による基礎杭の基礎
定着工法を示す工程図である。1 (A), 1 (B) and 1 (C) are process diagrams showing a method for anchoring a foundation pile according to the present invention.
【図2】(A)(B)(C)その一部切欠平面図であ
る。FIGS. 2A, 2B, and 2C are partially cutaway plan views.
【図3】本発明による杭定着体の構造例を示す縦断面図
である。FIG. 3 is a longitudinal sectional view showing a structural example of a pile anchor according to the present invention.
【図4】間隔保持部の形成例を示す杭定着体の縦断面図
である。FIG. 4 is a vertical cross-sectional view of a pile fixing member showing an example of forming a spacing member.
【図5】(A)(B)杭定着体の使用状態図である。5 (A) and 5 (B) are views showing a use state of a pile anchoring body.
【図6】従来のA型工法を示す断面図である。FIG. 6 is a cross-sectional view showing a conventional A-type method.
【図7】従来のB型工法を示す断面図である。FIG. 7 is a cross-sectional view showing a conventional B-type method.
【図8】(A)(B)先願発明工法を示す断面図であ
る。8 (A) and 8 (B) are cross-sectional views showing the prior invention invention method.
1 基礎杭、1a 杭頭部 2 中空部 3 塞ぎ体 4 根切り凹部 5 杭定着体 6 補強環 7 補強筋 8 間隔保持部 10 基礎、11 SC構造部 B 地盤 C1 捨コンクリート、C2 中詰コンクリート D 割栗石 E 組鉄筋、F ベース筋 G 土留め具 A 杭頭部から土留め具までの空間部 a 杭頭部から杭定着体までの空間部 H,h 根切り幅 L1 割栗石敷ライン、L2 ベースライン DESCRIPTION OF SYMBOLS 1 Foundation pile, 1a pile head 2 Hollow part 3 Closure body 4 Root cutting recess 5 Pile anchoring body 6 Reinforcement ring 7 Reinforcing bar 8 Spacing part 10 Foundation, 11 SC structure part B Ground C1 Discarded concrete, C2 Filling concrete D Split stone E Braided bar, F base bar G Earth fastener A Space from pile head to earth fastener a Space from pile head to pile anchor H, h Root width L1 Split stone floor line, L2 Base line
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成9年11月21日[Submission date] November 21, 1997
【手続補正1】[Procedure amendment 1]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図5[Correction target item name] Fig. 5
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図5】 FIG. 5
Claims (2)
杭頭部(1a)の外周囲に根切り凹部(4)を掘下げ、
該根切り凹部(4)内に杭定着体(5)を嵌挿し、杭頭
部(1a)の中空部(2)へのコンクリートの落ち込み
を防いで基礎(10)を打設し、その打設コンクリート
を杭頭部(1a)と杭定着体(5)との間に生じた空間
部(a)に流し込み、杭定着体(5)と固化したコンク
リートにより杭頭部(1a)の外周囲にSC構造部(1
1)を形成すると共に、杭定着体(5)の上部が基礎
(10)に埋設し、RC構造の基礎(10)の一部と成
ることを特徴とする基礎杭の基礎定着工法。1. A root cutting recess (4) is dug around the outer periphery of a pile head (1a) of a foundation pile (1) penetrated into the ground (B),
The pile anchoring body (5) is inserted into the root cutting recess (4), and concrete is prevented from dropping into the hollow part (2) of the pile head (1a). The concrete is poured into the space (a) created between the pile head (1a) and the pile anchor (5), and the outer periphery of the pile head (1a) is solidified by the pile anchor (5) and the solidified concrete. In the SC structure part (1
1) A method for anchoring a foundation pile, wherein an upper part of a pile anchor (5) is buried in a foundation (10) and becomes a part of a foundation (10) having an RC structure.
に嵌挿する補強環(6)と、該補強環(6)より上方に
突出して基礎(10)内に定着する補強筋(7)と、補
強環(6)と杭頭部(1a)の間隔を保つ間隔保持部
(8)とを備えていることを特徴とする基礎杭の基礎定
着工法に用いる杭定着体。2. A reinforcing ring (6) inserted between the root cutting recess (4) and the pile head (1a), and protrudes upward from the reinforcing ring (6) and is fixed in the foundation (10). A pile anchor used in a foundation anchoring method for a foundation pile, comprising: a reinforcing bar (7); and an interval holding part (8) for maintaining an interval between the reinforcing ring (6) and the pile head (1a). .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30589097A JP3176332B2 (en) | 1997-11-07 | 1997-11-07 | Anchored body used for foundation anchoring method of foundation pile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30589097A JP3176332B2 (en) | 1997-11-07 | 1997-11-07 | Anchored body used for foundation anchoring method of foundation pile |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11140887A true JPH11140887A (en) | 1999-05-25 |
JP3176332B2 JP3176332B2 (en) | 2001-06-18 |
Family
ID=17950550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30589097A Expired - Fee Related JP3176332B2 (en) | 1997-11-07 | 1997-11-07 | Anchored body used for foundation anchoring method of foundation pile |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3176332B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002115256A (en) * | 2000-10-11 | 2002-04-19 | Sumitomo Metal Ind Ltd | Structure for head part of foundation pile |
JP2006045778A (en) * | 2004-07-30 | 2006-02-16 | Shimizu Corp | Joining structure of pile head part and its construction method |
US20120324813A1 (en) * | 2005-03-16 | 2012-12-27 | Illinois Tool Works, Inc. | Tower foundation system and method for providing such system |
CN103953054A (en) * | 2014-04-01 | 2014-07-30 | 中铁大桥局集团第一工程有限公司 | Dry-sealed concrete pile foundation for protecting pile head reinforcement and construction method thereof |
JP2016223094A (en) * | 2015-05-28 | 2016-12-28 | ジャパンパイル株式会社 | Pile head connection device, pile head connection structure, and pile head connection method |
JP2020147974A (en) * | 2019-03-13 | 2020-09-17 | 大和ハウス工業株式会社 | Construction method of building foundation, and partition frame |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19859728A1 (en) | 1998-12-23 | 2000-06-29 | Henkel Kgaa | Water-swellable hot melt adhesive |
-
1997
- 1997-11-07 JP JP30589097A patent/JP3176332B2/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002115256A (en) * | 2000-10-11 | 2002-04-19 | Sumitomo Metal Ind Ltd | Structure for head part of foundation pile |
JP2006045778A (en) * | 2004-07-30 | 2006-02-16 | Shimizu Corp | Joining structure of pile head part and its construction method |
JP4503387B2 (en) * | 2004-07-30 | 2010-07-14 | 清水建設株式会社 | Pile head joint structure and construction method |
US20120324813A1 (en) * | 2005-03-16 | 2012-12-27 | Illinois Tool Works, Inc. | Tower foundation system and method for providing such system |
US8745942B2 (en) * | 2005-03-16 | 2014-06-10 | Illinois Tool Work, Inc. | Tower foundation system and method for providing such system |
CN103953054A (en) * | 2014-04-01 | 2014-07-30 | 中铁大桥局集团第一工程有限公司 | Dry-sealed concrete pile foundation for protecting pile head reinforcement and construction method thereof |
CN103953054B (en) * | 2014-04-01 | 2016-01-20 | 中铁大桥局集团第一工程有限公司 | A kind of dry sealing concrete pile foundation and construction method thereof protecting pile crown reinforcing bar |
JP2016223094A (en) * | 2015-05-28 | 2016-12-28 | ジャパンパイル株式会社 | Pile head connection device, pile head connection structure, and pile head connection method |
JP2020147974A (en) * | 2019-03-13 | 2020-09-17 | 大和ハウス工業株式会社 | Construction method of building foundation, and partition frame |
Also Published As
Publication number | Publication date |
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JP3176332B2 (en) | 2001-06-18 |
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