JP2000154542A - Pile cap and work execution method for pile cap - Google Patents
Pile cap and work execution method for pile capInfo
- Publication number
- JP2000154542A JP2000154542A JP10330902A JP33090298A JP2000154542A JP 2000154542 A JP2000154542 A JP 2000154542A JP 10330902 A JP10330902 A JP 10330902A JP 33090298 A JP33090298 A JP 33090298A JP 2000154542 A JP2000154542 A JP 2000154542A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- cylinder
- annular
- cylindrical body
- pile cap
- 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
【０００１】[0001]
【発明の属する技術分野】本発明は、各種の土木・建築
現場において、鉄筋コンクリート杭を地中に構築する場
合に使用する杭キャップ及び杭キャップの施工方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile cap used for constructing a reinforced concrete pile underground in various types of civil engineering and construction sites, and a method of constructing the pile cap.
【０００２】[0002]
【従来の技術】従来から土木や建築等の現場において場
所打ち杭を建て込み施工する場合は、地中の支持地盤ま
でアースドリル工法等によって円形状の孔を掘削し、こ
の掘削中に掘削孔の側壁が崩れ落ちないように掘削孔内
に安定液（水）を充填し、掘削作業が完了した後に、こ
の掘削孔に杭キャップを冠着した鉄筋篭を建て込み、続
いてトレミー管を杭キャップの中央から鉄筋篭に挿入
し、コンクリートをトレミー管の下端から排出して掘削
孔の底から連続的に打設し、鉄筋コンクリート杭を築造
している。2. Description of the Related Art Conventionally, when a cast-in-place pile is built and constructed at a site such as civil engineering or construction, a circular hole is drilled by a ground drill method or the like to an underground support ground, and a drill hole is drilled during this drilling. Fill the stabilizing liquid (water) into the drill hole so that the side wall of the drill does not collapse, and after the drilling operation is completed, install a steel cage with a pile cap in the drill hole, and then attach the tremee pipe to the pile cap. The reinforced concrete pile is inserted from the center of the reinforced concrete cage, the concrete is discharged from the lower end of the tremy tube, and continuously poured from the bottom of the excavation hole.
【０００３】上記した場所打ち杭の施工において、鉄筋
篭の頭部の杭主筋を保護するために取り付けられる従来
の杭キャップは、図８、図９に示すように内円筒１０１
と外円筒１０２との二重円筒状の上下端を、環状の蓋板
１０３および底板１０４によって連結すると共に、底板
１０４に多数の杭主筋１０５を挿通するため多数の孔１
０６を穿設したものであった。[0003] In the construction of the cast-in-place pile described above, a conventional pile cap attached to protect the main reinforcement of the pile head of the reinforced cage is an inner cylinder 101 as shown in FIGS.
The upper and lower ends of the double cylinder of the outer cylinder 102 and the outer cylinder 102 are connected by an annular cover plate 103 and a bottom plate 104, and a large number of holes 1 are formed in the bottom plate 104 for inserting a large number of pile main bars 105.
06 was drilled.
【０００４】また、鉄筋篭１０７は、長尺な多数の杭主
筋１０５と環状の複数のフープ筋１０８等とを組み合わ
せて筒状に形成したものであった。[0004] The reinforcing bar cage 107 is formed in a tubular shape by combining a large number of long main pile bars 105 and a plurality of annular hoop bars 108 and the like.
【０００５】[0005]
【発明が解決しようとする課題】そして鉄筋篭１０７を
掘削孔（図示せず）に建て込む前に、現場で鉄筋篭１０
７を組み立てながら杭キャップ１００を取り付けてい
る。この場合、従来は、環状で円周上に所定間隔毎に係
止突起を設けた治具（図示せず）を所定間隔毎に縦列に
配置し、各治具の各係止突起に杭主筋１０５を係止しな
がら杭主筋１０５の先端（頭部）を１本づつ杭キャップ
１００の底板１０４の穴１０６に挿入し、更に筒状に配
した杭主筋１０５を環状の複数のフープ筋１０８で巻い
て針金等で結合し、筒状の鉄筋篭１０７に杭キャップ１
００を取り付けていた。Before the rebar cage 107 is built in the excavation hole (not shown), the rebar cage 10 is set on site.
7, and the pile cap 100 is attached. In this case, conventionally, jigs (not shown) each having an annular shape and provided with locking projections at predetermined intervals on the circumference are arranged in tandem at predetermined intervals, and pile main bars are attached to each locking projection of each jig. While locking the 105, the tip (head) of the pile main bar 105 is inserted one by one into the hole 106 of the bottom plate 104 of the pile cap 100, and the cylindrical bar main bar 105 is further fixed by a plurality of annular hoop bars 108. Wound and connect with wire etc., and pile cap 1
00 was attached.
【０００６】そのため、鉄筋篭１０７に杭キャップ１０
０を取り付けるには、上記したように多数の杭主筋１０
５の一本づつを杭キャップ１００の底板１０４の孔１０
６に挿入していかねばならず、４０本〜８０本もある杭
主筋１０５を底板１０４の各孔１０６に挿入する作業は
手間も時間もかかり、作業効率や施工費用の点で問題が
あった。For this reason, the pile cap 10 is
In order to attach the pile main bar 10 as described above,
5 in the hole 10 of the bottom plate 104 of the pile cap 100.
6, the work of inserting 40 to 80 pile main bars 105 into each hole 106 of the bottom plate 104 takes time and effort, and there is a problem in terms of work efficiency and construction cost. .
【０００７】また、杭キャップ１００は、施工前に工場
等で形成されるものであったため、その外径や内径の大
きさ、底板の穴の数や穴の大きさ、穴間隔等は決められ
たものが現場に納入されている。そのため、この納入さ
れた杭キャップ１００と、実際の鉄筋篭の大きさ（鉄筋
篭の径や穴径、穴の数・間隔等）とが合致しない場合、
杭キャップを鉄筋篭に取り付けできないといった問題が
あった。Further, since the pile cap 100 is formed at a factory or the like before construction, the size of the outer diameter and inner diameter, the number of holes in the bottom plate, the size of the holes, the hole interval, and the like are determined. Has been delivered to the site. Therefore, if the delivered pile cap 100 does not match the actual size of the reinforcing bar (the diameter of the reinforcing bar, the hole diameter, the number of holes, the spacing, etc.)
There was a problem that the pile cap could not be attached to the steel cage.
【０００８】本発明は上記のような点に鑑みて開発され
たものであり、その目的とするところは、鉄筋篭への杭
キャップの取り付け作業を容易に行うことができるよう
にして作業効率を向上させることができ、また、鉄筋篭
の径や杭主筋の数等のある程度の変更に対しても対応す
ることができるようにした杭キャップ及び杭キャップの
施工方法を提供することにある。The present invention has been developed in view of the above points, and an object of the present invention is to make it possible to easily perform a work of attaching a pile cap to a reinforced cage, thereby improving work efficiency. It is an object of the present invention to provide a pile cap and a pile cap construction method which can be improved and can cope with a certain change in the diameter of a reinforcing bar cage, the number of pile main bars, and the like.
【０００９】[0009]
【課題を解決するための手段】本発明は上記のような目
的を有効に達成するために、次のような構成にしてあ
る。すなわち、請求項１記載の本発明の杭キャップは、
複数のフープ筋と多数の杭主筋によって筒状に形成した
鉄筋コンクリート杭用の鉄筋篭の一端部に取り付ける杭
キャップにおいて、この杭キャップを、外側筒体と、こ
の外側筒体より小径の内側筒体とによって、所定間隔の
環状空間を以て二重円筒状に形成すると共に、外側筒体
と内側筒体との一端に環状の繋ぎ蓋板を設けて上記の環
状空間の一端を封じ、この環状空間に通じる他端の環状
開口から上記の鉄筋篭の杭主筋の一端部を挿入できるよ
うにした構成にしてある。The present invention has the following configuration in order to effectively achieve the above object. That is, the pile cap of the present invention described in claim 1 is
In a pile cap to be attached to one end of a reinforcing cage for a reinforced concrete pile formed in a tubular shape by a plurality of hoop bars and a large number of pile main bars, the pile cap includes an outer tubular body and an inner tubular body having a smaller diameter than the outer tubular body. With this, while being formed in a double cylindrical shape with an annular space at a predetermined interval, an annular connecting lid plate is provided at one end of the outer cylinder and the inner cylinder to seal one end of the annular space, and this annular space is The configuration is such that one end of the pile main reinforcement of the above-described reinforcing cage can be inserted from the annular opening at the other end communicating therewith.
【００１０】請求項２記載の本発明の杭キャップは、複
数のフープ筋と多数の杭主筋によって筒状に形成した鉄
筋コンクリート杭用の鉄筋篭の一端部に取り付ける杭キ
ャップにおいて、この杭キャップを、外側筒体と、この
外側筒体より小径の中間筒体と、中間筒体より小径の内
側筒体とによって、それぞれ所定間隔の環状空間を以て
三重円筒状に形成すると共に、中間筒体を介して外側筒
体と内側筒体との一端に環状の繋ぎ蓋板を設けて上記の
各環状空間の一端を封じ、更に中間筒体と内側筒体との
環状空間の他端を封じる環状の繋ぎ蓋板を中間筒体と内
側筒体との他端に設け、他端の外側筒体と中間筒体との
間の環状開口から環状空間内に、上記の鉄筋篭の杭主筋
の一端部を挿入できるようにした構成にしてある。The pile cap of the present invention according to claim 2 is a pile cap attached to one end of a steel cage for a reinforced concrete pile formed into a tubular shape by a plurality of hoop bars and a number of pile main bars. An outer cylindrical body, an intermediate cylindrical body smaller in diameter than the outer cylindrical body, and an inner cylindrical body smaller in diameter than the intermediate cylindrical body are each formed in a triple cylindrical shape with annular spaces at predetermined intervals, and via the intermediate cylindrical body. An annular connecting lid plate is provided at one end of the outer cylindrical body and the inner cylindrical body to seal one end of each of the above-mentioned annular spaces, and further seals the other end of the annular space between the intermediate cylindrical body and the inner cylindrical body. A plate is provided at the other end of the intermediate cylinder and the inner cylinder, and one end of the main reinforcing bar of the reinforcing bar is inserted into the annular space from the annular opening between the outer cylinder and the intermediate cylinder at the other end. It has a configuration that enables it.
【００１１】請求項３記載の本発明の杭キャップは、複
数のフープ筋と多数の杭主筋によって筒状に形成した鉄
筋コンクリート杭用の鉄筋篭の一端部に取り付ける杭キ
ャップにおいて、この杭キャップを、外側筒体と、この
外側筒体より小径の中間筒体と、この中間筒体より小径
の内側筒体とによって、それぞれ所定間隔の環状空間を
以て三重円筒状に形成すると共に、中間筒体を介して外
側筒体と内側筒体との一端に環状の繋ぎ蓋板を設けて上
記の各環状空間の一端を封じ、更に外側筒体と中間筒体
と環状空間の他端を封じる環状の繋ぎ蓋板を外側筒体と
中間筒体との他端に設け、他端の中間筒体と内側筒体と
の間の環状開口から環状空間内に、上記の鉄筋篭の杭主
筋の一端部を挿入できるようにした構成にしてある。According to a third aspect of the present invention, there is provided a pile cap attached to one end of a steel cage for a reinforced concrete pile formed into a tubular shape by a plurality of hoop bars and a plurality of pile main bars. An outer cylindrical body, an intermediate cylindrical body smaller in diameter than the outer cylindrical body, and an inner cylindrical body smaller in diameter than the intermediate cylindrical body are formed in a triple cylindrical shape with annular spaces at predetermined intervals, respectively, and are formed through the intermediate cylindrical body. An annular connecting lid plate is provided at one end of the outer cylindrical body and the inner cylindrical body to seal one end of each of the above annular spaces, and further, an annular connecting lid for sealing the outer cylindrical body, the intermediate cylindrical body, and the other end of the annular space. A plate is provided at the other end of the outer cylinder and the intermediate cylinder, and one end of the main reinforcing bar of the reinforcing bar is inserted into the annular space from the annular opening between the intermediate cylinder and the inner cylinder at the other end. It has a configuration that enables it.
【００１２】請求項４記載の本発明の杭キャップは、複
数のフープ筋と多数の杭主筋によって筒状に形成した鉄
筋コンクリート杭用の鉄筋篭の一端部に取り付ける杭キ
ャップにおいて、この杭キャップを、外側筒体と、この
外側筒体より小径の第１中間筒体と、この第１中間筒体
より小径の第２中間筒体と、この第２中間筒体より小径
の内側筒体とによって、それぞれ所定間隔の環状空間を
以て四重円筒状に形成すると共に、第１中間筒体と第２
中間筒体を介して外側筒体と内側筒体との一端に環状の
繋ぎ蓋板を設けて上記の各環状空間の一端を封じ、更に
第１中間筒体と第２中間筒体との間の環状空間を封じる
環状の繋ぎ蓋板を第１中間筒体と第２中間筒体との他端
に設け、上記の第１中間筒体と外側筒体との間の環状空
間、又は第２中間筒体と内側筒体との間の環状空間に、
各環状空間の環状開口から上記の鉄筋篭の杭主筋の一端
部を挿入できるようにした構成にしてある。According to a fourth aspect of the present invention, there is provided a pile cap which is attached to one end of a steel cage for a reinforced concrete pile formed into a tubular shape by a plurality of hoop bars and a plurality of pile main bars. An outer cylinder, a first intermediate cylinder smaller in diameter than the outer cylinder, a second intermediate cylinder smaller in diameter than the first intermediate cylinder, and an inner cylinder smaller in diameter than the second intermediate cylinder. Each of the first intermediate cylinder and the second cylinder is formed in a quadruple cylindrical shape with annular spaces at predetermined intervals.
An annular connecting cover plate is provided at one end of the outer cylindrical body and the inner cylindrical body via the intermediate cylindrical body to seal one end of each of the above-described annular spaces, and between the first intermediate cylindrical body and the second intermediate cylindrical body. An annular connecting lid plate for sealing the annular space is provided at the other end of the first intermediate cylindrical body and the second intermediate cylindrical body, and the annular space between the first intermediate cylindrical body and the outer cylindrical body, or the second annular cylindrical body. In the annular space between the intermediate cylinder and the inner cylinder,
The configuration is such that one end of the main reinforcing bar of the above-described reinforcing cage can be inserted from the annular opening of each annular space.
【００１３】請求項５記載の本発明の杭キャップは、請
求項１、２、３又は４に記載の杭キャップの構成におい
て、環状開口を有する環状空間に連通する貫通穴を、環
状の繋ぎ蓋板に設けたことを特徴とする構成にしてあ
る。According to a fifth aspect of the present invention, there is provided a pile cap according to the first, second, third, or fourth aspect, wherein the through hole communicating with the annular space having the annular opening has an annular connecting lid. It is configured to be provided on a plate.
【００１４】請求項６記載の本発明の杭キャップの施工
方法は、多数の長尺な杭主筋をフープ筋によって所定間
隔毎に結合させて筒状に形成してなる鉄筋篭の一端部
を、少なくとも二重の円筒状で、一端を環状に封じ他端
を環状開口した杭キャップ内の環状空間に、上記の環状
開口から挿入して、上記の鉄筋篭の一端部に杭キャップ
を取り付ける構成にしてある。According to a sixth aspect of the present invention, there is provided a method for constructing a pile cap according to the present invention, wherein one end of a reinforcing bar cage formed by connecting a plurality of long pile main bars at predetermined intervals by a hoop bar is formed. At least a double cylinder, one end is annularly sealed and the other end is inserted into the annular space inside the pile cap having an annular opening from the annular opening to attach the pile cap to one end of the reinforcing bar. It is.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態を図に
基づいて説明する。図１〜図４に示す本発明に係る杭キ
ャップ１は、円筒状の外側筒体２と、この外側筒体２と
同一長さで径の小さい内側筒体３と、この両筒体２、３
の上端２ａ、３ａ（図４参照）を繋ぐ環状の蓋板４とに
よって形成された二重円筒状のものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. A pile cap 1 according to the present invention shown in FIGS. 1 to 4 has a cylindrical outer cylinder 2, an inner cylinder 3 having the same length as the outer cylinder 2 and a smaller diameter, and both cylinders 2. 3
And a ring-shaped lid plate 4 connecting the upper ends 2a and 3a (see FIG. 4).
【００１６】外側筒体２と内側筒体３との間は、適宜の
間隔の環状空間５を設けてある。この環状空間５に通じ
る下端側の環状開口６からは、鉄筋篭７（図２参照）を
構成する各杭主筋８の一端部（頭部）８ａを挿入できる
ようにしてある。An annular space 5 is provided at an appropriate interval between the outer cylinder 2 and the inner cylinder 3. One end (head) 8a of each main bar 8 constituting the reinforcing bar cage 7 (see FIG. 2) can be inserted into the annular opening 6 at the lower end side communicating with the annular space 5.
【００１７】杭キャップ１の中央部分は貫通空間９にな
っており、コンクリート打設用のトリミー管（図示せ
ず）を挿入できるようにしてある。また上記の蓋板４に
は、気液抜き用の貫通穴１０が穿設してある。The central portion of the pile cap 1 is a through space 9 so that a trimming tube (not shown) for placing concrete can be inserted. The cover plate 4 is provided with a through-hole 10 for venting gas and liquid.
【００１８】上記のような構成からなる杭キャップ１に
あっては、鉄筋篭７の頭部７ａに上記の杭キャップ１を
取り付ける場合、環状に配した多数の杭主筋８の一端部
（頭部）８ａを環状開口６から環状空間５内に挿入する
ことにより、簡単に鉄筋篭７に杭キャップ１を取り付け
ることができる。In the pile cap 1 having the above-described structure, when the pile cap 1 is attached to the head 7a of the reinforcing bar 7, one end (the head) of a large number of pile main bars 8 arranged in an annular shape. ) By inserting 8a into the annular space 5 from the annular opening 6, the pile cap 1 can be easily attached to the reinforced cage 7.
【００１９】すなわち、土木や建築現場等で鉄筋篭７を
組み立て、工場等で形成した上記の杭キャップ１を現場
に搬入し、この杭キャップ１に鉄筋篭７の頭部７ａを挿
入して、鉄筋篭７に杭キャップ１に取り付ける場合の施
工方法について説明する。That is, a steel cage 7 is assembled at a civil engineering or construction site, the above-mentioned pile cap 1 formed at a factory or the like is carried into the site, and the head 7a of the steel cage 7 is inserted into the pile cap 1, A construction method when the pile cap 1 is attached to the reinforcing bar 7 will be described.
【００２０】上記の現場の平坦な場所に、所定間隔を以
て対峙するようにして縦列に環状の治具（図示せず）を
配置する。この治具には所定間隔を以て周囲に係止突起
（図示せず）が設けられている。長尺の杭主筋８は、こ
の縦列方向に配置した各治具の各係止突起に上記の縦列
方向に沿って係止する。An annular jig (not shown) is arranged in tandem with the above-mentioned flat place on the site at a predetermined interval. The jig is provided with locking projections (not shown) around the jig at predetermined intervals. The long pile main reinforcement 8 is locked along the above-mentioned column direction on each locking projection of each jig arranged in the above-mentioned column direction.
【００２１】この場合、杭キャップ１は環状開口６を治
具側に向けて、杭主筋８の一端部（頭部）８ａを挿入で
きる位置に配置しておく。そして、各杭主筋８は、治具
の係止突起に係止していくと共に一端部（頭部）８ａを
環状開口６から環状空間５内に挿入する。In this case, the pile cap 1 is arranged so that the annular opening 6 faces the jig side and one end (head) 8a of the main pile 8 can be inserted. Then, each of the pile main bars 8 is engaged with the engaging projection of the jig, and one end (head) 8 a is inserted into the annular space 5 from the annular opening 6.
【００２２】また、各治具を介して略円筒状に配された
多数の杭主筋８は、所定間隔を以て上記の縦列方向に配
置されていた環状の各フープ筋１１に針金等によって結
びつける。治具の底部側に設ける杭主筋８は、各治具の
取り除いた後に、一端部（頭部）８ａを杭キャップ１の
環状空間５に環状開口６から挿入しながら各フープ筋１
１に沿わせた配し、針金等によって各フープ筋１１に結
びつける。A large number of pile main reinforcements 8 arranged in a substantially cylindrical shape via the respective jigs are connected by wires or the like to the annular hoop reinforcements 11 arranged in the tandem direction at predetermined intervals. After removing each jig, the pile main reinforcement 8 provided on the bottom side of the jig inserts one end (head) 8a into the annular space 5 of the pile cap 1 from the annular opening 6 while each hoop reinforcement 1
1 and tied to each hoop streak 11 with a wire or the like.
【００２３】このようにして鉄筋篭７を組み立てると共
に、この鉄筋篭７の頭部７ａに簡単に杭キャップ１を取
り付ける。杭キャップ１と鉄筋篭７は連結部材（図示せ
ず）を介して溶接等によって連結される。The rebar basket 7 is assembled as described above, and the pile cap 1 is easily attached to the head 7a of the rebar basket 7. The pile cap 1 and the reinforcing bar 7 are connected by welding or the like via a connecting member (not shown).
【００２４】図５は、別の例の本発明の杭キャップ１
（符号は上記の杭キャップと便宜上、同一符号を使用）
を示す。この杭キャップ１は、長さが同じで径の異なる
外側筒体２と、この外側筒体２より小径の中間筒体１２
と、この中間筒体１２より小径の内側筒体３とを、それ
ぞれ所定間隔の環状空間１３、１４を以った三重円筒状
に形成し、中間筒体１２の一端１２ａを介して外側筒体
２と内側筒体３との上端２ａ、３ａに環状の繋ぎ蓋板１
５を設けて上記の環状空間１３、１４の上端側を封じ、
更に中間筒体１２と内側筒体３との間の環状空間１４を
封じる環状の繋ぎ蓋板１６を、中間筒体１２と内側筒体
３との下端３ｂ、１２ｂに設けて、上記の環状空間１４
を上下端で封じた構成のものである。また、上記の蓋板
１５には気液抜き用の貫通穴１０が穿設してある。FIG. 5 shows another example of the pile cap 1 of the present invention.
(The code is the same as the above-mentioned pile cap for convenience.)
Is shown. The pile cap 1 includes an outer cylindrical body 2 having the same length and different diameters, and an intermediate cylindrical body 12 having a smaller diameter than the outer cylindrical body 2.
And the inner cylindrical body 3 having a smaller diameter than the intermediate cylindrical body 12 are formed in a triple cylindrical shape having annular spaces 13 and 14 at predetermined intervals, respectively, and the outer cylindrical body 3 is provided via one end 12 a of the intermediate cylindrical body 12. An annular connecting cover plate 1 is provided on upper ends 2a, 3a of the inner cylindrical body 2 and the inner cylindrical body 3.
5 to seal the upper ends of the annular spaces 13 and 14,
Further, an annular connecting lid plate 16 for sealing an annular space 14 between the intermediate cylindrical body 12 and the inner cylindrical body 3 is provided at lower ends 3b, 12b of the intermediate cylindrical body 12 and the inner cylindrical body 3, and the above annular space is provided. 14
Are sealed at the upper and lower ends. The cover plate 15 is provided with a through-hole 10 for venting gas and liquid.
【００２５】この杭キャップ１の場合は、鉄筋篭７を形
成する場合に各杭主筋８の一端部８ａ（便宜上、図２を
参照）を、外側筒体２と中間筒体１２との間の環状空間
１３に環状開口６から挿入することによって、現場等で
形成される鉄筋篭７の頭部７ａに杭キャップ１を簡単に
取り付けることができる。In the case of the pile cap 1, when forming the reinforcing bar cage 7, one end 8 a of each pile main bar 8 (see FIG. 2 for convenience) is placed between the outer cylindrical body 2 and the intermediate cylindrical body 12. The pile cap 1 can be easily attached to the head 7a of the reinforcing bar 7 formed at the site or the like by inserting the pile cap 1 into the annular space 13 through the annular opening 6.
【００２６】また、外側筒体２と内側筒体３との間隔が
広くならないように中間筒体１２を設けて、環状空間１
４を蓋板１６で封じ手あるので、この鉄筋篭７に杭キャ
ップ１を取り付けて掘削穴（図示せず）に建て込んでコ
ンクリートを打設した場合に、杭キャップ１内に流入し
てくるコンクリートの量を低減させることができ、後の
不要なコンクリートの除去がし易い。An intermediate cylinder 12 is provided so that the distance between the outer cylinder 2 and the inner cylinder 3 is not increased.
4 is covered with a cover plate 16, so that when the pile cap 1 is attached to the reinforcing bar 7, the concrete is poured into a digging hole (not shown), and concrete is poured into the pile cap 1. Can be reduced, and unnecessary concrete can be easily removed later.
【００２７】また、外側筒体２と内側筒体３との間隔が
広くならないようにしてあるため、杭キャップ１を鉄筋
篭７の頭部７ａに取り付けて、この鉄筋篭７の掘削穴
（図示せず）への建て込み作業をおこなう場合に、杭キ
ャップ１が傾いたりすることを防止することができる。
尚、このことは、以下の例の杭キャップ１でも同様のこ
とがいえる。Since the distance between the outer cylindrical body 2 and the inner cylindrical body 3 is not widened, the pile cap 1 is attached to the head 7a of the reinforcing bar cage 7, and the excavation hole (see FIG. (Not shown), it is possible to prevent the pile cap 1 from tilting.
The same can be said for the pile cap 1 in the following example.
【００２８】図６は、また別の例の本発明の杭キャップ
１（符号は上記の杭キャップと便宜上、同一符号を使
用）を示す。この杭キャップ１は、長さが同じで径の異
なる外側筒体２とこの外側筒体２より小径の中間筒体１
２とこの中間筒体１２より小径の内側筒体３とを所定間
隔の環状空間１３、１４を以った三重円筒状に形成し、
中間筒体１２の一端１２ａを介して外側筒体２と内側筒
体３との上端（一端）２ａ、３ａに環状の繋ぎ蓋板１７
を設けて上記の環状空間１３、１４の上端側を封じ、更
に外側筒体２と中間筒体１２との間の環状空間１３を封
じる環状の繋ぎ蓋板１８を外側筒体２と中間筒体１２と
の下端（他端）２ｂ、１２ｂに設けて上記の環状空間１
３を上下端で封じた構成のものである。また、上記の蓋
板１７には気液抜き用の貫通穴１０が穿設してある。FIG. 6 shows still another example of the pile cap 1 of the present invention (the same reference numerals are used for the sake of convenience as those of the above-mentioned pile cap). The pile cap 1 has an outer cylindrical body 2 having the same length but different diameters and an intermediate cylindrical body 1 having a smaller diameter than the outer cylindrical body 2.
2 and the inner cylindrical body 3 smaller in diameter than the intermediate cylindrical body 12 are formed in a triple cylindrical shape having annular spaces 13 and 14 at predetermined intervals,
An annular connecting cover plate 17 is attached to upper ends (one ends) 2a and 3a of the outer cylindrical body 2 and the inner cylindrical body 3 via one end 12a of the intermediate cylindrical body 12.
Is provided to seal the upper ends of the annular spaces 13 and 14, and furthermore, to connect the annular connecting cover plate 18 for sealing the annular space 13 between the outer cylindrical body 2 and the intermediate cylindrical body 12 to the outer cylindrical body 2 and the intermediate cylindrical body. The annular space 1 is provided at the lower end (other end) 2b, 12b of
3 is sealed at the upper and lower ends. The cover plate 17 is provided with a through-hole 10 for venting gas and liquid.
【００２９】この杭キャップ１の場合は、鉄筋篭７を形
成する場合に各杭主筋８の一端部８ａを、内側筒体３と
中間筒体１２との間の環状空間１４に環状開口６から挿
入することによって、現場等で形成される鉄筋篭７の頭
部７ａに、上記したような施工方法によって杭キャップ
１を取り付けることができる。In the case of this pile cap 1, when forming the reinforcing bar cage 7, one end 8 a of each pile main bar 8 is inserted into the annular space 14 between the inner cylindrical body 3 and the intermediate cylindrical body 12 through the annular opening 6. By inserting, the pile cap 1 can be attached to the head 7a of the reinforcing bar 7 formed at the site or the like by the above-described construction method.
【００３０】図７は、更に別の例の本発明の杭キャップ
１（符号は上記の杭キャップと便宜上、同一符号を使
用）を示す。この杭キャップ１は、長さが同じで径の異
なる外側筒体２と、この外側筒体２より小径の第１中間
筒体１９と、この第１中間筒体１９より小径の第２中間
筒体２０と、この第２中間筒体２０より小径の内側筒体
３とによって所定間隔の環状空間２１、２２、２３を以
った四重円筒状に形成すると共に、第１中間筒体１９
と、第２中間筒体２０の上端１９ａ、２０ａを介して外
側筒体２と、内側筒体３との各上端２ａ、３ａに環状の
繋ぎ蓋板２４を設けて上記の環状空間２１、２２、２３
の上端側を封じ、更に第１中間筒体１９と第２中間筒体
２０との環状空間２２を封じる環状の繋ぎ蓋板２５を第
１中間筒体１９と第２中間筒体２０との下端（他端）１
９ｂ、２０ｂに設けて、上記の環状空間２０を上下端で
封じた構成のものである。また、上記の蓋板２４には気
液抜き用の貫通穴１０が穿設してある。FIG. 7 shows still another example of the pile cap 1 of the present invention (the same reference numerals are used for the sake of convenience as the above-mentioned pile caps). The pile cap 1 has an outer cylindrical body 2 having the same length and a different diameter, a first intermediate cylindrical body 19 having a smaller diameter than the outer cylindrical body 2, and a second intermediate cylindrical body having a smaller diameter than the first intermediate cylindrical body 19. The body 20 and the inner cylindrical body 3 having a smaller diameter than the second intermediate cylindrical body 20 form a quadruple cylindrical shape having annular spaces 21, 22, 23 at predetermined intervals, and the first intermediate cylindrical body 19
An annular connecting lid plate 24 is provided at the upper ends 2a, 3a of the outer cylinder 2 and the inner cylinder 3 via the upper ends 19a, 20a of the second intermediate cylinder 20, and the annular spaces 21, 22 are provided. , 23
Of the first intermediate cylindrical body 19 and the second intermediate cylindrical body 20 are closed by an annular connecting lid plate 25 for sealing the annular space 22 between the first intermediate cylindrical body 19 and the second intermediate cylindrical body 20. (The other end) 1
9b and 20b, the annular space 20 is sealed at the upper and lower ends. The cover plate 24 is provided with a through-hole 10 for venting gas and liquid.
【００３１】この杭キャップ１の場合は、所定の大径又
は小径の鉄筋篭７に対しても対応することができる。す
なわち、所定の大径の鉄筋篭７を形成してその頭部７ａ
に杭キャップ１を取り付ける場合は、図７に示す杭キャ
ップ１の外側筒体２０と第１中間筒体１９の間の環状空
間２１に、環状開口６から鉄筋篭７を形成する各杭主筋
８の一端部（頭部）８ａを挿入して鉄筋篭７を形成する
と共に、この鉄筋篭７の頭部７ａに図７の杭キャップ１
を取り付ける。In the case of the pile cap 1, it is possible to cope with a steel cage 7 having a predetermined large or small diameter. That is, a predetermined large-diameter rebar basket 7 is formed and its head 7a
When the pile cap 1 is attached to the pile cap 1 shown in FIG. 7, each of the pile main reinforcing bars 8 forming the reinforcing bar cage 7 from the annular opening 6 in the annular space 21 between the outer cylindrical body 20 and the first intermediate cylindrical body 19 of the pile cap 1. 7 is formed by inserting one end (head) 8a of the squirrel cap 7 into the head cap 7a of FIG.
Attach.
【００３２】また、所定の小径の鉄筋篭７を形成してそ
の頭部７ａに杭キャップ１を取り付ける場合は、図７に
示す杭キャップ１の内側筒体３と第２中間筒体２０の間
の環状空間２３に、環状開口６から鉄筋篭７を形成する
各杭主筋８の一端部（頭部）８ａを挿入して鉄筋篭７を
形成すると共に、この鉄筋篭７の頭部７ａに杭キャップ
１を取り付ける。In the case of forming the reinforcing rod cage 7 having a predetermined small diameter and mounting the pile cap 1 on the head 7a, the space between the inner cylindrical body 3 of the pile cap 1 and the second intermediate cylindrical body 20 shown in FIG. In the annular space 23, one end (head) 8a of each main bar 8 forming the reinforcing bar cage 7 from the annular opening 6 is inserted to form the reinforcing bar cage 7, and the pile 7 is mounted on the head 7a of the reinforcing bar cage 7. Attach the cap 1.
【００３３】このように図７に示す杭キャップ１では、
径の大小の鉄筋篭７に対しても同一杭キャップ１で対応
することができる。そして各鉄筋篭７と杭キャップ１と
の間で動きをある程度規制することができる。As described above, in the pile cap 1 shown in FIG.
The same pile cap 1 can cope with the rebar cage 7 having a large or small diameter. The movement between each reinforcing bar 7 and the pile cap 1 can be restricted to some extent.
【００３４】[0034]
【発明の効果】このように本発明の杭キャップでは、鉄
筋篭の一端部（頭部）に取り付ける場合にも、外側筒体
と内側筒体との二重円筒の間の環状環状空間に、又は外
側筒体と中間筒体と内側筒体とからなる三重円筒の外側
筒体と中間筒体との間の環状環状空間に、又は外側筒体
と中間筒体と内側筒体とからなる三重円筒の中間筒体と
内側筒体との間の環状環状空間に、或いは外側筒体と第
１中間筒体と第２中間筒体と内側筒体とからなる四重円
筒の外側筒体と第１中間筒体との間の環状環状空間及び
第２中間筒体と内側筒体との間の環状環状空間に、鉄筋
篭を構成する各杭主筋の一端部を容易に挿入することが
できる。そのため、鉄筋篭への杭キャップの取り付け、
又は杭キャップへの鉄筋篭の頭部の挿入作業を簡単・迅
速に行うことができて、作業効率を一段と向上させるこ
とができる。そして、この作業の効率化によって施工費
用を低減させることができる。また、鉄筋篭の径の変更
や杭主筋の径の変更に対しても従来の杭キャップと比べ
て問題なく対応することができる。As described above, according to the pile cap of the present invention, even when the pile cap is attached to one end (head) of the reinforcing bar, the pile annular space between the outer cylinder and the inner cylinder is not required. Or a triple cylinder composed of an outer cylinder, an intermediate cylinder, and an inner cylinder, in an annular annular space between the outer cylinder and the intermediate cylinder, or a triple cylinder composed of an outer cylinder, an intermediate cylinder, and an inner cylinder. In the annular annular space between the cylindrical intermediate cylinder and the inner cylinder, or in the outer cylinder of the quadruple cylinder composed of the outer cylinder, the first intermediate cylinder, the second intermediate cylinder, and the inner cylinder, One end of each pile main bar constituting the reinforcing bar cage can be easily inserted into the annular annular space between the first intermediate cylinder and the annular annular space between the second intermediate cylinder and the inner cylinder. Therefore, installation of a pile cap on a reinforced cage,
Alternatively, the work of inserting the head of the reinforced cage into the pile cap can be performed easily and quickly, and the working efficiency can be further improved. And the construction cost can be reduced by improving the efficiency of this work. Also, it is possible to cope with a change in the diameter of the reinforcing bar cage and a change in the diameter of the pile main bar without any problem as compared with the conventional pile cap.
【００３５】また、環状開口を有する環状空間に連通す
る貫通穴を環状の繋ぎ蓋板に設けたことにより、杭キャ
ップを冠着した鉄筋篭を掘削穴に建て込みするときに、
杭キャップの各環状環状空間に流入してくる気液抜きを
抜くことができ、スムーズに杭キャップを取り付けた鉄
筋篭を掘削穴に建て込むことができる。Further, by providing a through hole communicating with the annular space having the annular opening in the annular connecting cover plate, a reinforcing cage with a pile cap mounted thereon can be installed in the excavation hole.
The gas-liquid drainage flowing into each annular annular space of the pile cap can be removed, and the reinforcing cage with the pile cap attached can be smoothly built into the excavation hole.
【００３６】[0036]
【図１】本発明の一例の杭キャップの一部切欠斜視図で
ある。FIG. 1 is a partially cutaway perspective view of a pile cap according to an example of the present invention.
【図２】本発明の一例の杭キャップを鉄筋篭に冠着した
状態の一部切欠斜視図である。FIG. 2 is a partially cutaway perspective view showing a state in which a pile cap according to an example of the present invention is mounted on a steel cage.
【図３】本発明の一例の杭キャップの全体斜視図であ
る。FIG. 3 is an overall perspective view of a pile cap according to an example of the present invention.
【図４】本発明の一例の杭キャップの縦断面図である。FIG. 4 is a longitudinal sectional view of a pile cap according to an example of the present invention.
【図５】本発明の他の例の杭キャップの縦断面図であ
る。FIG. 5 is a longitudinal sectional view of a pile cap according to another example of the present invention.
【図６】本発明の別の例の杭キャップの縦断面図であ
る。FIG. 6 is a longitudinal sectional view of another example of a pile cap according to the present invention.
【図７】本発明のまた別の例の杭キャップの縦断面図で
ある。FIG. 7 is a longitudinal sectional view of another example of a pile cap according to the present invention.
【図８】従来の杭キャップの一部切欠斜視図である。FIG. 8 is a partially cutaway perspective view of a conventional pile cap.
【図９】従来の杭キャップを鉄筋篭に冠着した状態の一
部切欠斜視図である。FIG. 9 is a partially cutaway perspective view showing a state in which a conventional pile cap is mounted on a steel cage.
１ 杭キャップ ２ 外側筒体 ３ 内側筒体 ４ 蓋体 ５ 環状空間 ６ 環状開口 ７ 鉄筋篭 ７ａ 頭部 ８ 杭主筋 ８ａ 一端部（頭部） １０ 貫通穴 １１ フープ筋 １２ 中間筒体 １３ 環状空間 １４ 環状空間 １５ 蓋体 １６ 蓋板 １９ 第１中間筒体 ２０ 第２中間筒体 ２１ 環状空間 ２２ 環状空間 DESCRIPTION OF SYMBOLS 1 Pile cap 2 Outer cylinder 3 Inner cylinder 4 Lid 5 Annular space 6 Annular opening 7 Reinforcement cage 7a Head 8 Pile main bar 8a One end (head) 10 Through hole 11 Hoop bar 12 Intermediate cylinder 13 Annular space 14 Annular space 15 Lid 16 Lid plate 19 First intermediate cylinder 20 Second intermediate cylinder 21 Annular space 22 Annular space
Claims (6)
筒状に形成した鉄筋コンクリート杭用の鉄筋篭の一端部
に取り付ける杭キャップにおいて、 この杭キャップを、外側筒体と、この外側筒体より小径
の内側筒体とによって、所定間隔の環状空間を以て二重
円筒状に形成すると共に、外側筒体と内側筒体との一端
に環状の繋ぎ蓋板を設けて上記の環状空間の一端を封
じ、この環状空間に通じる他端の環状開口から上記の鉄
筋篭の杭主筋の一端部を挿入できるようにした構成を特
徴とする杭キャップ。1. A pile cap attached to one end of a steel cage for a reinforced concrete pile formed in a tubular shape by a plurality of hoop bars and a number of pile main bars, wherein the pile cap is composed of an outer cylinder and an outer cylinder. A small-diameter inner cylinder is formed into a double cylindrical shape with an annular space at a predetermined interval, and an annular connecting lid plate is provided at one end of the outer cylinder and the inner cylinder to seal one end of the annular space. A pile cap characterized in that one end of the main reinforcing bar of the above-described reinforcing cage can be inserted from an annular opening at the other end communicating with the annular space.
筒状に形成した鉄筋コンクリート杭用の鉄筋篭の一端部
に取り付ける杭キャップにおいて、 この杭キャップを、外側筒体と、この外側筒体より小径
の中間筒体と、中間筒体より小径の内側筒体とによっ
て、それぞれ所定間隔の環状空間を以て三重円筒状に形
成すると共に、中間筒体を介して外側筒体と内側筒体と
の一端に環状の繋ぎ蓋板を設けて上記の各環状空間の一
端を封じ、更に中間筒体と内側筒体との環状空間の他端
を封じる環状の繋ぎ蓋板を中間筒体と内側筒体との他端
に設け、他端の外側筒体と中間筒体との間の環状開口か
ら環状空間内に、上記の鉄筋篭の杭主筋の一端部を挿入
できるようにした構成を特徴とする杭キャップ。2. A pile cap to be attached to one end of a reinforcing cage for a reinforced concrete pile formed in a tubular shape by a plurality of hoop bars and a number of pile main bars, the pile cap comprising an outer tubular body and an outer tubular body. A small-diameter intermediate cylinder and an inner cylinder smaller in diameter than the intermediate cylinder are formed in a triple cylinder shape with annular spaces at predetermined intervals, respectively, and one end of an outer cylinder and an inner cylinder via the intermediate cylinder. An annular connecting lid plate is provided to seal one end of each of the above-mentioned annular spaces, and further, an annular connecting lid plate for sealing the other end of the annular space between the intermediate cylindrical body and the inner cylindrical body, the intermediate cylindrical body and the inner cylindrical body. A pile provided at the other end of the pile, wherein one end of the pile main bar of the above-described reinforcing cage can be inserted into the annular space from the annular opening between the outer cylindrical body and the intermediate cylindrical body at the other end. cap.
筒状に形成した鉄筋コンクリート杭用の鉄筋篭の一端部
に取り付ける杭キャップにおいて、 この杭キャップを、外側筒体と、この外側筒体より小径
の中間筒体と、この中間筒体より小径の内側筒体とによ
って、それぞれ所定間隔の環状空間を以て三重円筒状に
形成すると共に、中間筒体を介して外側筒体と内側筒体
との一端に環状の繋ぎ蓋板を設けて上記の各環状空間の
一端を封じ、更に外側筒体と中間筒体と環状空間の他端
を封じる環状の繋ぎ蓋板を外側筒体と中間筒体との他端
に設け、他端の中間筒体と内側筒体との間の環状開口か
ら環状空間内に、上記の鉄筋篭の杭主筋の一端部を挿入
できるようにした構成を特徴とする杭キャップ。3. A pile cap attached to one end of a steel cage for a reinforced concrete pile formed in a cylindrical shape by a plurality of hoop bars and a number of pile main bars, wherein the pile cap is formed by an outer cylinder and an outer cylinder. A small-diameter intermediate cylinder and an inner cylinder smaller in diameter than the intermediate cylinder are each formed into a triple cylinder with annular spaces at predetermined intervals, and the outer cylinder and the inner cylinder are formed through the intermediate cylinder. An annular connecting lid plate is provided at one end to seal one end of each of the above-described annular spaces, and further, an outer cylindrical body, an intermediate cylindrical body, and an annular connecting lid plate that seals the other end of the annular space. A pile provided at the other end of the pile, wherein one end of the pile main bar of the above-described reinforcing cage can be inserted into the annular space from the annular opening between the intermediate cylindrical body and the inner cylindrical body at the other end. cap.
筒状に形成した鉄筋コンクリート杭用の鉄筋篭の一端部
に取り付ける杭キャップにおいて、 この杭キャップを、外側筒体と、この外側筒体より小径
の第１中間筒体と、この第１中間筒体より小径の第２中
間筒体と、この第２中間筒体より小径の内側筒体とによ
って、それぞれ所定間隔の環状空間を以て四重円筒状に
形成すると共に、第１中間筒体と第２中間筒体を介して
外側筒体と内側筒体との一端に環状の繋ぎ蓋板を設けて
上記の各環状空間の一端を封じ、更に第１中間筒体と第
２中間筒体との間の環状空間を封じる環状の繋ぎ蓋板を
第１中間筒体と第２中間筒体との他端に設け、上記の第
１中間筒体と外側筒体との間の環状空間、又は第２中間
筒体と内側筒体との間の環状空間に、各環状空間の環状
開口から上記の鉄筋篭の杭主筋の一端部を挿入できるよ
うにした構成を特徴とする杭キャップ。4. A pile cap attached to one end of a steel cage for a reinforced concrete pile formed in a tubular shape by a plurality of hoop bars and a number of pile main bars, wherein the pile cap is formed by an outer cylinder and an outer cylinder. A quadruple cylinder having an annular space at a predetermined interval is provided by a first intermediate cylinder having a small diameter, a second intermediate cylinder having a diameter smaller than the first intermediate cylinder, and an inner cylinder having a diameter smaller than the second intermediate cylinder. And an annular connecting cover plate provided at one end of the outer cylinder and the inner cylinder via the first intermediate cylinder and the second intermediate cylinder to seal one end of each of the annular spaces, An annular connecting lid plate for sealing an annular space between the first intermediate cylinder and the second intermediate cylinder is provided at the other end of the first intermediate cylinder and the second intermediate cylinder, and the first intermediate cylinder is provided. In the annular space between the and the outer cylinder, or in the annular space between the second intermediate cylinder and the inner cylinder, Pile cap characterized a configuration in which the annular opening of the annular space can be inserted the end portion of the pile main reinforcement of the rebar cage.
通穴を、環状の繋ぎ蓋板に設けたことを特徴とする請求
項１、２、３又は４記載の杭キャップ。5. The pile cap according to claim 1, wherein a through hole communicating with an annular space having an annular opening is provided in the annular connecting lid plate.
所定間隔毎に結合させて筒状に形成してなる鉄筋篭の一
端部を、少なくとも二重の円筒状で、一端を環状に封じ
他端を環状開口した杭キャップ内の環状空間に、上記の
環状開口から挿入して、上記の鉄筋篭の一端部に杭キャ
ップを取り付ける杭キャップの施工方法。6. One end of a reinforcing bar cage formed by connecting a large number of long pile main bars at predetermined intervals by a hoop bar and forming a cylindrical shape is sealed at least in a double cylindrical shape, and one end is annularly sealed. A method of constructing a pile cap, wherein the other end is inserted into the annular space inside the pile cap having an annular opening from the annular opening, and the pile cap is attached to one end of the reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10330902A JP2000154542A (en) | 1998-11-20 | 1998-11-20 | Pile cap and work execution method for pile cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10330902A JP2000154542A (en) | 1998-11-20 | 1998-11-20 | Pile cap and work execution method for pile cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000154542A true JP2000154542A (en) | 2000-06-06 |
Family
ID=18237779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10330902A Pending JP2000154542A (en) | 1998-11-20 | 1998-11-20 | Pile cap and work execution method for pile cap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000154542A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006183339A (en) * | 2004-12-28 | 2006-07-13 | Kumagai Gumi Co Ltd | Pile head finishing cap for cast-in-place pile |
| JP2008285901A (en) * | 2007-05-17 | 2008-11-27 | Kumagai Gumi Co Ltd | Pile cap |
| WO2011131062A1 (en) * | 2010-04-22 | 2011-10-27 | 斯君哲 | Pouring pile structure without tension |
| CN114517535A (en) * | 2022-01-18 | 2022-05-20 | 中交第四公路工程局有限公司 | Assembled column base node quick-connection structure |
-
1998
- 1998-11-20 JP JP10330902A patent/JP2000154542A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006183339A (en) * | 2004-12-28 | 2006-07-13 | Kumagai Gumi Co Ltd | Pile head finishing cap for cast-in-place pile |
| JP2008285901A (en) * | 2007-05-17 | 2008-11-27 | Kumagai Gumi Co Ltd | Pile cap |
| WO2011131062A1 (en) * | 2010-04-22 | 2011-10-27 | 斯君哲 | Pouring pile structure without tension |
| CN114517535A (en) * | 2022-01-18 | 2022-05-20 | 中交第四公路工程局有限公司 | Assembled column base node quick-connection structure |
| CN114517535B (en) * | 2022-01-18 | 2022-09-06 | 中交第四公路工程局有限公司 | Assembled column base node quick-connection structure |
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