JP2020193553A - Head joint structure and joint method for pile columnar bodies - Google Patents

Head joint structure and joint method for pile columnar bodies Download PDF

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JP2020193553A
JP2020193553A JP2019226957A JP2019226957A JP2020193553A JP 2020193553 A JP2020193553 A JP 2020193553A JP 2019226957 A JP2019226957 A JP 2019226957A JP 2019226957 A JP2019226957 A JP 2019226957A JP 2020193553 A JP2020193553 A JP 2020193553A
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reinforcing bar
pile
reinforcing
head
connecting plate
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JP7307670B2 (en
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前田 一成
Kazunari Maeda
一成 前田
重克 又吉
Shigekatsu Matayoshi
重克 又吉
宗一郎 杉山
Soichiro Sugiyama
宗一郎 杉山
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Penta Ocean Construction Co Ltd
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Abstract

To provide a head joint structure and join method for pile columnar bodies that can avoid interference between main reinforcements and reinforcing bars for a concrete structure and that can resist a bending moment for pile heads.SOLUTION: The head joint structure for pile columnar bodies includes a reinforcing bar connection plate 12 that is arranged below a concrete structure 6 and supported on a head of a pile columnar body. Horizontal reinforcing bars 14, 14 that are embedded in the concrete structure 6 are attached on the reinforcing bar connection plate 12, and the reinforcing bar connection plate 12 includes reinforcing bar through holes 12b, 12b into which reinforcing bars 8, 8 are inserted. Because of this, it is possible to secure high bending strength and avoid interference between the reinforcing bars and the horizontal reinforcing bars.SELECTED DRAWING: Figure 2

Description

本発明は、桟橋等の上部工やフーチング等のコンクリート構造体と鋼管杭等の杭柱状体とを接合する杭柱状体の頭部接合構造及び接合方法に関する。 The present invention relates to a head joining structure and a joining method of a pile columnar body for joining a concrete structure such as a superstructure such as a pier or a footing and a pile columnar body such as a steel pipe pile.

従来、フーチング等のコンクリート構造体と鋼管杭等の杭柱状体との接合には、コンクリート構造体に一定長さだけ杭柱状体の頭部を埋め込み、埋め込んだ部分によって杭頭曲げモーメントに抵抗する方法(以下、方法Aという)と、コンクリート構造体内への杭頭部の埋め込み深さを最小限に留め、杭頭部とコンクリート体とに跨って縦向きの補強鉄筋を杭頭部周方向に間隔をおいて配置し、補強鉄筋によって杭頭曲げモーメントに抵抗する方法(以下、方法Bという)とが知られている(例えば、特許文献1を参照)。 Conventionally, when joining a concrete structure such as footing and a pile column such as a steel pipe pile, the head of the pile column is embedded in the concrete structure by a certain length, and the embedded portion resists the pile head bending moment. Method (hereinafter referred to as method A) and the depth of embedding of the pile head in the concrete structure are kept to a minimum, and vertical reinforcing reinforcing bars are placed in the circumferential direction of the pile head across the pile head and the concrete body. A method of arranging the piles at intervals and resisting the pile head bending moment by reinforcing reinforcing bars (hereinafter referred to as method B) is known (see, for example, Patent Document 1).

方法Aは、構造上、フーチング等のコンクリート構造体の下部に配置される主筋が分断されるため、十分な補強鉄筋を配置する必要があり配置が複雑になるという問題があった。 The method A has a problem that it is necessary to arrange sufficient reinforcing reinforcing bars because the main reinforcing bars arranged in the lower part of the concrete structure such as footing are structurally divided, and the arrangement becomes complicated.

一方、方法Bは、方法Aに比べて一般的に剛結度が低いが、杭柱状体によってフーチング等のコンクリート構造体の下部に配置される主筋が分断されないので、配置が簡素化できるという利点がある。 On the other hand, the method B generally has a lower degree of rigidity than the method A, but has an advantage that the arrangement can be simplified because the main bars arranged under the concrete structure such as footing are not divided by the pile columnar body. There is.

また、方法Bは、桟橋等の杭支持構造物における杭頭部接合やプレキャスト部材との適用事例が少なく、この分野への応用が期待されている。 In addition, Method B is expected to be applied to this field because there are few examples of application to pile head joining or precast members in pile supporting structures such as piers.

特開2006−83609号公報Japanese Unexamined Patent Publication No. 2006-83609

しかしながら、従来の方法Bに係る技術では、縦向きの補強鉄筋が杭頭部周方向に間隔をおいて配置されるため、フーチングや桟橋の上部工等のコンクリート構造体の下側に格子状に配置された主筋と干渉するおそれがあり、これを回避するために杭柱状体の杭頭部外周面部に補強鉄筋を支持する部材を設ける等の対策が必要であった。 However, in the conventional technique according to the method B, since the vertical reinforcing bars are arranged at intervals in the circumferential direction of the pile head, the reinforcing bars are arranged in a grid pattern under the concrete structure such as footing or pier superstructure. There is a risk of interference with the arranged main bars, and in order to avoid this, it was necessary to take measures such as providing a member to support the reinforcing bars on the outer peripheral surface of the pile head of the pile column.

また、杭柱状体に接合されるコンクリート構造体がプレキャスト部材の場合、コンクリート構造体の主筋と補強鉄筋との嵌め合わせが困難であるため、従来の方法Aを用いてコンクリート構造体に鞘管を設置し、杭頭部を鞘管に挿入し、鞘管内にコンクリートを打設することによって杭柱状体と接合する場合が多かった。 Further, when the concrete structure to be joined to the pile column is a precast member, it is difficult to fit the main bar and the reinforcing reinforcing bar of the concrete structure. Therefore, the sheath pipe is attached to the concrete structure by using the conventional method A. In many cases, it was installed, the head of the pile was inserted into the sheath pipe, and concrete was placed in the sheath pipe to join it to the pile column.

しかしながら、鞘管によってコンクリート構造体の主筋が分断されるため、強度を確保するために必要な補強鉄筋の本数が多くなり、その分、杭柱状体の外径も大きくしなければならないという問題があった。 However, since the main reinforcement of the concrete structure is divided by the sheath pipe, the number of reinforcing bars required to secure the strength increases, and the outer diameter of the pile column must be increased accordingly. there were.

そこで、本発明は、このような従来の問題に鑑み、フーチングや桟橋の上部工等のコンクリート構造体の主筋と補強鉄筋との干渉を回避することができ、杭頭曲げモーメントに抵抗することができる杭柱状体の杭頭部接合構造及び接合方法の提供を目的としてなされたものである。 Therefore, in view of such conventional problems, the present invention can avoid interference between the main reinforcing bars of the concrete structure such as footing and superstructure of the pier and the reinforcing reinforcing bars, and can resist the pile head bending moment. This is for the purpose of providing a pile head joining structure and a joining method for a pile columnar body that can be formed.

上述の如き従来の問題を解決するための請求項1に記載の発明の特徴は、杭柱状体の頭部にコンクリート構造体が接合されてなる杭柱状体の頭部接合構造において、前記コンクリート構造体の下部に配置され、前記杭柱状体の頭部に支持される鉄筋連結プレートを備え、前記鉄筋連結プレートには、前記コンクリート構造体に埋設される水平鉄筋が定着され、且つ、前記コンクリート構造体と前記杭柱状体とに跨って配置される補強鉄筋が貫通される補強鉄筋用貫通孔を備えていることにある。 The feature of the invention according to claim 1 for solving the conventional problem as described above is the concrete structure in the head joint structure of the pile column body in which the concrete structure is joined to the head of the pile column body. A reinforcing bar connecting plate arranged at the lower part of the body and supported by the head of the pile columnar body is provided, and horizontal reinforcing bars embedded in the concrete structure are fixed to the reinforcing bar connecting plate, and the concrete structure is fixed. It is provided with a through hole for reinforcing reinforcing bars through which reinforcing reinforcing bars arranged so as to straddle the body and the pile columnar body are penetrated.

請求項2に記載の発明の特徴は、請求項1の構成に加え、前記杭柱状体は、杭頭部に高さ調整部材を備え、前記鉄筋連結プレートが前記高さ調整部材を介して前記杭柱状体の頭部に支持されていることにある。 The feature of the invention according to claim 2 is that, in addition to the configuration of claim 1, the pile columnar body is provided with a height adjusting member at the pile head, and the reinforcing bar connecting plate is provided via the height adjusting member. It is supported by the head of the pile column.

請求項3に記載の発明の特徴は、請求項1又は2の構成に加え、前記コンクリート構造体は、プレキャストコンクリート部材であって、前記鉄筋連結プレートは、前記プレキャストコンクリート部材に形成された縦孔の下部に配置されていることにある。 The feature of the invention according to claim 3 is that, in addition to the configuration of claim 1 or 2, the concrete structure is a precast concrete member, and the reinforcing bar connecting plate is a vertical hole formed in the precast concrete member. It is located at the bottom of.

請求項4に記載の発明の特徴は、請求項1〜3の何れか一の構成に加え、前記鉄筋連結プレートの上方に間隔をおいて鉄筋支持プレートを備え、該鉄筋支持プレートに前記コンクリート構造体に埋設される水平鉄筋が定着されるとともに、前記補強鉄筋が定着されることにある。 The feature of the invention according to claim 4 is that, in addition to the configuration of any one of claims 1 to 3, a reinforcing bar support plate is provided above the reinforcing bar connecting plate at intervals, and the reinforcing bar support plate has the concrete structure. The horizontal reinforcing bars embedded in the body are fixed, and the reinforcing reinforcing bars are fixed.

請求項5に記載の発明の特徴は、請求項4の構成に加え、前記鉄筋支持プレートは、前記補強鉄筋が貫通される補強鉄筋用貫通孔を備えていることにある。 A feature of the invention according to claim 5 is that, in addition to the configuration of claim 4, the reinforcing bar support plate is provided with a through hole for reinforcing reinforcing bars through which the reinforcing reinforcing bars are penetrated.

請求項6に記載の発明の特徴は、請求項4の構成に加え、前記鉄筋支持プレートには、複数の補強鉄筋からなる鉄筋群が挿通される鉄筋群挿通用開口部が形成されるとともに、外縁が前記鉄筋群挿通用開口部の縁部に支持される定着プレートを備え、該定着プレートに前記複数の補強鉄筋の上端部が支持され、前記複数の補強鉄筋が前記定着プレートを介して前記鉄筋支持プレートに支持されるとともに、前記定着プレートに支持された前記補強鉄筋が前記鉄筋連結プレートに形成された前記補強鉄筋用貫通孔に貫通されていることにある。 The feature of the invention according to claim 6 is that, in addition to the configuration of claim 4, the reinforcing bar support plate is formed with an opening for inserting a reinforcing bar group into which a reinforcing bar group composed of a plurality of reinforcing bars is inserted. A fixing plate whose outer edge is supported by the edge of the opening for inserting the reinforcing bar group is provided, the upper end portions of the plurality of reinforcing bars are supported by the fixing plate, and the plurality of reinforcing bars are supported via the fixing plate. The reinforcing bar is supported by the reinforcing bar support plate, and the reinforcing bar supported by the fixing plate is penetrated through the reinforcing bar through hole formed in the reinforcing bar connecting plate.

請求項7に記載の発明の特徴は、請求項6の構成に加え、前記定着プレートに上端部が支持された複数の補強鉄筋からなる補強鉄筋群の外側が環状又は螺旋状のフープ筋で拘束されていることにある。 The feature of the invention according to claim 7 is that, in addition to the configuration of claim 6, the outside of the reinforcing bar group composed of a plurality of reinforcing bars whose upper end is supported by the fixing plate is restrained by an annular or spiral hoop bar. It is to be done.

請求項8に記載の発明の特徴は、請求項4〜6の何れか一の構成に加え、前記鉄筋連結プレートと前記鉄筋支持プレートとの間に複数のフープ筋支持柱を備え、該フープ筋支持柱に環状又は螺旋状のフープ筋が支持されていることにある。 The feature of the invention according to claim 8 is that, in addition to the configuration of any one of claims 4 to 6, a plurality of hoop reinforcement columns are provided between the reinforcing bar connecting plate and the reinforcing bar support plate, and the hoop reinforcement is provided. An annular or spiral hoop muscle is supported on the support column.

請求項9に記載の発明の特徴は、請求項8の構成に加え、前記複数のフープ筋支持柱の外側に縦孔形成用の型枠材を備えていることにある。 A feature of the invention according to claim 9 is that, in addition to the configuration of claim 8, a formwork material for forming a vertical hole is provided on the outside of the plurality of hoop muscle support columns.

請求項10に記載の発明の特徴は、請求項1〜9の何れか一の構成に加え、前記杭柱状体の頭部に着脱可能に突設され、前記鉄筋連結プレートに開口したガイド孔に挿入されるガイド部材を備え、前記補強鉄筋用貫通孔は、前記ガイド孔の外側に周方向に間隔をおいて配置されていることにある。 The feature of the invention according to claim 10 is, in addition to the configuration of any one of claims 1 to 9, a guide hole that is detachably projected from the head of the pile columnar body and is opened in the reinforcing bar connecting plate. A guide member to be inserted is provided, and the through holes for reinforcing reinforcing bars are arranged outside the guide holes at intervals in the circumferential direction.

請求項11に記載の発明の特徴は、請求項1〜10の何れか一の構成に加え、前記杭柱状体の上端に支持され、前記鉄筋連結プレート下に配置された環状の緩衝部材を備え、該緩衝部材の内側に形成されたコンクリート製の絞り部を介して前記杭柱状体と前記コンクリート構造体とが接合されていることにある。 The feature of the invention according to claim 11 is that, in addition to the configuration of any one of claims 1 to 10, an annular cushioning member supported by the upper end of the pile columnar body and arranged under the reinforcing bar connecting plate is provided. The pile columnar body and the concrete structure are joined to each other via a concrete drawing portion formed inside the cushioning member.

請求項12に記載の発明の特徴は、杭柱状体の頭部にコンクリート構造体を接合する杭柱状体の頭部接合方法において、前記コンクリート構造体の下部に配置され、前記コンクリート体に埋設される水平鉄筋が定着された鉄筋連結プレートを備え、前記杭柱状体の頭部に前記鉄筋連結プレートを支持させ、その状態で前記鉄筋連結プレートに形成された補強鉄筋用貫通孔を通して補強鉄筋を前記鉄筋連結プレートの上下に跨って配置し、しかる後、コンクリートを打設して前記杭柱状体の頭部に前記コンクリート構造体を接合することにある。 A feature of the invention according to claim 12 is that in a method of joining a concrete structure to the head of a pile column, the concrete structure is arranged below the concrete structure and embedded in the concrete body. The reinforcing bar is provided with a reinforcing bar connecting plate on which the horizontal reinforcing bar is fixed, the reinforcing bar connecting plate is supported by the head of the pile column, and the reinforcing bar is passed through the through hole for the reinforcing bar formed in the reinforcing bar connecting plate in that state. It is to be arranged so as to straddle the upper and lower parts of the reinforcing bar connecting plate, and then concrete is cast to join the concrete structure to the head of the pile columnar body.

請求項13に記載の発明の特徴は、請求項12の構成に加え、前記コンクリート構造体は、プレキャストコンクリート部材であって、前記鉄筋連結プレートを前記プレキャストコンクリート部材に形成された縦孔の下部に配置しておき、前記杭柱状体の頭部に前記鉄筋連結プレートを介して前記プレキャストコンクリート部材を支持させ、その状態で前記鉄筋連結プレートに形成された補強鉄筋用貫通孔を通して補強鉄筋を前記プレキャストコンクリート部材と前記杭柱状体とに跨って配置し、しかる後、前記縦孔にコンクリートを打設して前記杭柱状体の頭部にプレキャストコンクリート部材を接合することにある。 A feature of the invention according to claim 13 is that, in addition to the configuration of claim 12, the concrete structure is a precast concrete member, and the reinforcing bar connecting plate is placed in a lower portion of a vertical hole formed in the precast concrete member. The precast concrete member is supported by the head of the pile columnar body via the reinforcing bar connecting plate, and the reinforcing reinforcing bar is precast through the through hole for reinforcing reinforcing bar formed in the reinforcing bar connecting plate in that state. The present invention is to arrange the concrete member and the pile columnar body so as to straddle the pile columnar body, and then to cast concrete into the vertical hole to join the precast concrete member to the head of the pile columnar body.

請求項14に記載の発明の特徴は、請求項12又は13の構成に加え、前記杭柱状体の頭部に高さを調整した高さ調整部材を固定し、該高さ調整部材上に前記鉄筋連結プレートを支持させることにある。 The feature of the invention according to claim 14 is that, in addition to the configuration of claim 12 or 13, a height-adjusted height adjusting member is fixed to the head of the pile columnar body, and the height adjusting member is placed on the height adjusting member. The purpose is to support the reinforcing bar connecting plate.

請求項15に記載の発明の特徴は、請求項14の構成に加え、前記高さ調整部材は、中央部に前記鉄筋連結プレートを支持させる支持用凸部を備え、該支持用凸部の外側に円環状の緩衝部材を嵌め込んだ状態で前記支持用凸部に前記鉄筋連結プレートを支持させ、しかる後、前記コンクリートを打設して前記杭柱状体と前記コンクリート構造体とを接合するとともに、前記緩衝部材の内側に前記杭柱状体の径より小さい絞り部を形成し、該絞り部を介して前記杭柱状体と前記コンクリート構造体とを接合することにある。 The feature of the invention according to claim 15 is that, in addition to the configuration of claim 14, the height adjusting member is provided with a supporting convex portion for supporting the reinforcing bar connecting plate at a central portion, and is outside the supporting convex portion. The reinforcing bar connecting plate is supported by the supporting convex portion with the annular cushioning member fitted in the concrete, and then the concrete is cast to join the pile columnar body and the concrete structure. A drawing portion smaller than the diameter of the pile column is formed inside the cushioning member, and the pile column and the concrete structure are joined via the drawing portion.

請求項16に記載の発明の特徴は、請求項12〜15の何れか一の構成に加え、前記杭柱状体の頭部に突設されたガイド部材に、前記鉄筋連結プレートに開口したガイド孔を嵌め合わせ、前記鉄筋連結プレートを前記ガイド部材に案内させて前記コンクリート構造体を設置位置に誘導し、前記杭柱状体に前記鉄筋連結プレートを支持させ、前記ガイド孔の外側に周方向に間隔をおいて配置された補強鉄筋用貫通孔に補強鉄筋を挿入することにある。 The feature of the invention according to claim 16 is that, in addition to the configuration of any one of claims 12 to 15, a guide hole opened in the reinforcing bar connecting plate in a guide member projecting from the head of the pile columnar body. The reinforcing bar connecting plate is guided to the guide member to guide the concrete structure to the installation position, the pile columnar body supports the reinforcing bar connecting plate, and the reinforcing bar connecting plate is spaced outside the guide hole in the circumferential direction. The purpose is to insert the reinforcing bar into the through hole for the reinforcing bar arranged at the same time.

請求項17に記載の発明の特徴は、請求項12〜16の何れか一の構成に加え、前記鉄筋連結プレートの上方に間隔をおいて鉄筋支持プレートを設けておき、該鉄筋支持プレートに前記コンクリート構造体に埋設される水平鉄筋を定着するとともに、前記補強鉄筋を定着することにある。 The feature of the invention according to claim 17 is that, in addition to the configuration of any one of claims 12 to 16, a reinforcing bar support plate is provided above the reinforcing bar connecting plate at intervals, and the reinforcing bar support plate is provided with the reinforcing bar support plate. The purpose is to fix the horizontal reinforcing bars embedded in the concrete structure and to fix the reinforcing bars.

請求項18に記載の発明の特徴は、請求項17の構成に加え、複数の補強鉄筋の上端部を定着プレートに支持させておき、前記杭柱状体の頭部に前記鉄筋連結プレートを介して前記プレキャストコンクリート部材を支持させた後、前記定着プレートに支持させた複数の補強鉄筋を前記鉄筋支持プレートに形成された鉄筋群挿通用開口部を挿通させるとともに、前記鉄筋連結プレートに形成された前記補強鉄筋用貫通孔に貫通させ、前記定着プレートの外縁を前記鉄筋群挿通用開口部の縁部に支持させ、各補強鉄筋の上端部を前記定着プレートを介して前記鉄筋支持プレートに支持させることにある。 The feature of the invention according to claim 18 is that, in addition to the configuration of claim 17, the upper end portions of a plurality of reinforcing bars are supported by a fixing plate, and the head of the pile columnar body is interposed via the reinforcing bar connecting plate. After supporting the precast concrete member, a plurality of reinforcing bars supported by the fixing plate are inserted through an opening for inserting a reinforcing bar group formed in the reinforcing bar support plate, and the reinforcing bar connecting plate is formed. It penetrates through the through hole for the reinforcing bar, the outer edge of the fixing plate is supported by the edge of the opening for inserting the reinforcing bar group, and the upper end of each reinforcing bar is supported by the reinforcing bar support plate via the fixing plate. It is in.

請求項19に記載の発明の特徴は、請求項18の構成に加え、前記定着プレートに上端部が支持された複数の補強鉄筋からなる鉄筋群の外側を環状又は螺旋状のフープ筋で拘束しておくことにある。 The feature of the invention according to claim 19 is that, in addition to the configuration of claim 18, the outside of a reinforcing bar group composed of a plurality of reinforcing bars whose upper end is supported by the fixing plate is restrained by an annular or spiral hoop bar. It is to keep.

請求項20に記載の発明の特徴は、請求項17又は18の構成に加え、前記鉄筋連結プレートと前記鉄筋支持プレートとの間に複数のフープ筋支持柱を設けておき、該フープ筋支持柱に環状又は螺旋状のフープ筋を支持させておくことにある The feature of the invention according to claim 20 is that, in addition to the configuration of claim 17 or 18, a plurality of hoop muscle support columns are provided between the reinforcing bar connecting plate and the reinforcing bar support plate, and the hoop muscle support columns are provided. To support the annular or spiral hoop muscles

本発明に係る杭柱状体の杭頭部接合構造は、請求項1に記載の構成を具備することによって、補強鉄筋によって曲げモーメントに抵抗する構造において、コンクリート構造体の下部に配置される主鉄筋と補強鉄筋との干渉を回避することができる。 The pile head joint structure of the pile columnar body according to the present invention has the structure according to claim 1, and is arranged in the lower part of the concrete structure in a structure that resists bending moment by reinforcing bars. And interference with the reinforcing bars can be avoided.

また、本発明において、請求項2に記載の構成を具備することによって、接合高さを容易に調整することができる。 Further, in the present invention, the joint height can be easily adjusted by providing the configuration according to claim 2.

更に、本発明において、請求項3に記載の構成を具備することによって、補強鉄筋によって曲げモーメントに抵抗する構造をプレキャストコンクリート部材にも好適に適用することができる。 Further, in the present invention, by providing the configuration according to claim 3, the structure that resists the bending moment by the reinforcing reinforcing bar can be suitably applied to the precast concrete member.

更にまた、本発明において、請求項4に記載の構成を具備することによって、補強鉄筋とコンクリート構造体の上部に配置された水平鉄筋との干渉を回避することができるとともに、補強鉄筋の定着を容易に行うことができる。 Furthermore, in the present invention, by providing the configuration according to claim 4, it is possible to avoid interference between the reinforcing bar and the horizontal reinforcing bar arranged on the upper part of the concrete structure, and to fix the reinforcing bar. It can be done easily.

また、本発明において、請求項5に記載の構成を具備することによって、鉄筋連結プレートの補強鉄筋用貫通孔の位置に合わせて補強鉄筋の頭部を鉄筋支持プレートに定着させることができる。 Further, in the present invention, by providing the configuration according to claim 5, the head of the reinforcing bar can be fixed to the reinforcing bar support plate in accordance with the position of the through hole for the reinforcing bar of the reinforcing bar connecting plate.

また、本発明において、請求項6に記載の構成を具備することによって、補強鉄筋を一括して設置することができる。 Further, in the present invention, the reinforcing reinforcing bars can be collectively installed by providing the configuration according to claim 6.

さらに、本発明において、請求項7に記載の構成を具備することによって、複数の補強鉄筋の位置決めをすることができるとともに、フープ筋を補強鉄筋と一括して設置することができる。 Further, in the present invention, by providing the configuration according to claim 7, a plurality of reinforcing reinforcing bars can be positioned, and hoop reinforcing bars can be installed together with the reinforcing reinforcing bars.

また、本発明において、請求項8に記載の構成を具備することによって、現地でのフープ筋の設置作業を省くことができるとともに、狭隘な場所での作業が軽減され、効率よく作業を行うことができる。 Further, in the present invention, by providing the configuration according to claim 8, it is possible to omit the work of installing the hoop muscle in the field, reduce the work in a narrow place, and perform the work efficiently. Can be done.

さらに、本発明において、請求項9に記載の構成を具備することによって、フープ筋とコンクリート構造体とが隔離された状態で縦孔を形成することができる。 Further, in the present invention, by providing the configuration according to claim 9, a vertical hole can be formed in a state where the hoop bar and the concrete structure are isolated.

さらに、本発明において、請求項10に記載の構成を具備することによって、鉄筋連結プレートを介して杭柱状体とコンクリート構造体との位置決めを容易に行えるとともに、杭柱状体に対して各補強鉄筋を同心円配置に設置することができる。 Further, in the present invention, by providing the configuration according to claim 10, the pile columnar body and the concrete structure can be easily positioned via the reinforcing bar connecting plate, and each reinforcing reinforcing bar for the pile columnar body can be easily positioned. Can be installed in a concentric arrangement.

さらに、本発明において、請求項11に記載の構成を具備することによって、地震等によって杭頭部に作用する曲げモーメントを低減することができ、杭柱状体、コンクリート構造体について合理的な設計を行うことができる。 Further, in the present invention, by providing the configuration according to claim 11, the bending moment acting on the pile head due to an earthquake or the like can be reduced, and the pile columnar body and the concrete structure can be rationalized. It can be carried out.

本発明に係る杭柱状体の杭頭部接合方法は、請求項12に記載の構成を具備することによって、コンクリート構造体の下部に配置される主鉄筋(水平鉄筋)に対して補強鉄筋を干渉することなく効率よく設置することができる。 The pile head joining method for a pile columnar body according to the present invention interferes with a reinforcing reinforcing bar with a main reinforcing bar (horizontal reinforcing bar) arranged under a concrete structure by providing the configuration according to claim 12. It can be installed efficiently without doing anything.

また、本発明において、請求項13に記載の構成を具備することによって、コンクリート構造物を効率よく構築することができる。 Further, in the present invention, the concrete structure can be efficiently constructed by providing the configuration according to claim 13.

さらに、本発明において、請求項14に記載の構成を具備することによって、各杭の杭頭部高さを容易に調整することができる。 Further, in the present invention, the height of the pile head of each pile can be easily adjusted by providing the configuration according to claim 14.

また、本発明において、請求項15に記載の構成を具備することによって、コンクリート構造体と杭柱状体とが半剛接合され、地震等によって杭頭部に生じる曲げモーメントを低減し、杭柱状体、コンクリート構造体について合理的な設計を行うことができるので、杭頭部を効率よく構築することができる。
応力を軽減し、杭柱状体の破損を防止することができる。
Further, in the present invention, by providing the configuration according to claim 15, the concrete structure and the pile columnar body are semi-rigidly joined to reduce the bending moment generated at the pile head due to an earthquake or the like, and the pile columnar body. Since the concrete structure can be rationalized, the pile head can be constructed efficiently.
It is possible to reduce stress and prevent damage to the pile column.

更にまた、本発明において、請求項16に記載の構成を具備することによって、鉄筋連結プレートを介してコンクリート構造体を所定の位置に誘導することができるとともに、杭柱状体に対して各補強鉄筋を同心配置に設置することができる。 Furthermore, in the present invention, by providing the configuration according to claim 16, the concrete structure can be guided to a predetermined position via the reinforcing bar connecting plate, and each reinforcing reinforcing bar is provided with respect to the pile columnar body. Can be installed in a concentric arrangement.

更にまた、本発明において、請求項17に記載の構成を具備することによって、コンクリート構造体の上部に配置される水平鉄筋と補強鉄筋との干渉を回避し、効率よく補強鉄筋の配置を行えるとともに、補強鉄筋を容易に定着することができる。 Furthermore, in the present invention, by providing the configuration according to claim 17, interference between the horizontal reinforcing bars arranged on the upper part of the concrete structure and the reinforcing bars can be avoided, and the reinforcing bars can be efficiently arranged. , Reinforcing bars can be easily fixed.

また、本発明において、請求項18に記載の構成を具備することによって、補強鉄筋を一括して設置することができる。 Further, in the present invention, the reinforcing reinforcing bars can be collectively installed by providing the configuration according to claim 18.

さらに、本発明において、請求項19に記載の構成を具備することによって、複数の補強鉄筋の位置決めをすることができるとともに、フープ筋を補強鉄筋と一括して設置することができる。 Further, in the present invention, by providing the configuration according to claim 19, a plurality of reinforcing reinforcing bars can be positioned, and hoop reinforcing bars can be installed together with the reinforcing reinforcing bars.

また、本発明において、請求項20に記載の構成を具備することによって、現地でのフープ筋の設置作業を省くことができるとともに、狭隘な場所での作業が軽減され、効率よく作業を行うことができる。 Further, in the present invention, by providing the configuration according to claim 20, it is possible to omit the work of installing the hoop muscle in the field, and the work in a narrow place is reduced, so that the work can be performed efficiently. Can be done.

本発明に係る杭柱状体の頭部接合構造を使用した一例を示す正面図である。It is a front view which shows an example which used the head joint structure of the pile column body which concerns on this invention. 図1中の杭柱状体の杭頭部の接合状態を示す縦断面図である。It is a vertical cross-sectional view which shows the joint state of the pile head of the pile column body in FIG. 図2中の鉄筋連結プレートを示す斜視図である。It is a perspective view which shows the reinforcing bar connecting plate in FIG. 本発明に係る杭柱状体の杭頭部接合方法の手順を示す図であって、(a)は杭柱状体の組み立て作業の状態を示す平面図、(b)は同縦断面図である。It is a figure which shows the procedure of the pile head joining method of the pile column body which concerns on this invention, (a) is a plan view which shows the state of the pile column body assembly work, (b) is the same vertical sectional view. (a)は同上のプレキャストコンクリート部材の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing the state of the precast concrete member as above, and (b) is a vertical sectional view of the same. 同上の底面図である。It is the bottom view of the same as above. 同上の杭柱状体にコンクリート構造体を設置する作業の状態を示す斜視図である。It is a perspective view which shows the state of the work of installing the concrete structure in the pile column body of the same above. (a)は同上の杭柱状体にコンクリート構造体を設置した状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state in which a concrete structure is installed on the same pile columnar body, and (b) is a vertical sectional view of the same. (a)は同上の補強鉄筋の設置作業の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state of installation work of the reinforcing reinforcing bar of the same as above, and (b) is a vertical sectional view of the same. (a)は同上の杭頭部内コンクリートの打設時の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state at the time of placing concrete in the pile head of the same as above, and (b) is a vertical sectional view of the same. 本発明に係る杭柱状体の頭部接合構造の他の一例を示す図であって、(a)はコンクリート打設前の状態の平面図、(b)は同縦断面図である。It is a figure which shows another example of the head joint structure of the pile column body which concerns on this invention, (a) is a plan view of the state before concrete placing, (b) is the same vertical sectional view. 本発明に係る杭柱状体の頭部接合構造の他の一例を示す図であって、(a)はコンクリート構造体を示す平面図、(b)は同縦断面図である。It is a figure which shows another example of the head joint structure of the pile column body which concerns on this invention, (a) is the plan view which shows the concrete structure, (b) is the same vertical sectional view. 図12中のフープ筋を支持する構造を示す斜視図である。It is a perspective view which shows the structure which supports the hoop muscle in FIG. (a)は同上のコンクリート構造体を使用したコンクリート打設前の状態の平面図、(b)は同縦断面図である。(A) is a plan view of the state before concrete placing using the same concrete structure, and (b) is a vertical sectional view of the same. (a)は同上の杭頭部内コンクリートの打設時の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state at the time of placing concrete in the pile head of the same as above, and (b) is a vertical sectional view of the same. 補強鉄筋を支持する構造の他の一例を示す分解斜視図である。It is an exploded perspective view which shows another example of the structure which supports a reinforcing bar. 同上の構造を使用する際の補強鉄筋を設置する作業の状態を示す断面図である。It is sectional drawing which shows the state of the work of installing the reinforcing bar when using the same structure. (a)は同上の補強鉄筋を設置した状態を示す平面図、(b)は同断面図である。(A) is a plan view showing a state in which the reinforcing reinforcing bars of the above are installed, and (b) is a sectional view of the same. (a)は同上の杭頭部内コンクリートの打設時の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state at the time of placing concrete in the pile head of the same as above, and (b) is a vertical sectional view of the same. 本発明に係る杭柱状体の頭部接合構造のさらに他の一例を示す縦断面図である。It is a vertical cross-sectional view which shows still another example of the head joint structure of the pile column body which concerns on this invention. 同上の杭柱状体の杭頭部接合方法の手順を示す図であって、(a)は杭柱状体の組み立て作業の状態を示す平面図、(b)は同縦断面図である。It is a figure which shows the procedure of the pile head joining method of the pile column of the same above, (a) is a plan view which shows the state of the pile column assembly work, (b) is the same vertical sectional view. (a)は同上の杭柱状体にコンクリート構造体を設置した状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state in which a concrete structure is installed on the same pile columnar body, and (b) is a vertical sectional view of the same. (a)は同上の補強鉄筋の設置作業の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state of installation work of the reinforcing reinforcing bar of the same as above, and (b) is a vertical sectional view of the same. (a)は同上の杭頭部内コンクリートの打設時の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state at the time of placing concrete in the pile head of the same as above, and (b) is a vertical sectional view of the same. 本発明に係る杭柱状体の頭部接合構造の更に他の一例を示す縦断面図である。It is a vertical cross-sectional view which shows still another example of the head joint structure of the pile column body which concerns on this invention. 同上の杭柱状体の頭部接合方法の手順を示す図であって、杭柱状体を打設した状態を示す縦断面図である。It is a figure which shows the procedure of the head joining method of the pile column of the same above, and is the vertical sectional view which shows the state which the pile column is placed. (a)は同上の鉄筋連結プレートを設置した状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state in which the same reinforcing bar connecting plate is installed, and (b) is a vertical sectional view of the same. (a)は同上の補強鉄筋の配置作業の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state of the arrangement work of the reinforcing bars of the same as above, and (b) is a vertical sectional view of the same. (a)は同上の水平鉄筋の配置作業の状態を示す平面図、(b)は同縦断面図である。(A) is a plan view showing a state of the horizontal reinforcing bar arrangement work of the same as above, and (b) is a vertical sectional view of the same.

次に、本発明に係る杭柱状体の頭部接合構造の実施態様を図1〜図10に示した実施例に基づいて説明する。 Next, an embodiment of the head joint structure of the pile columnar body according to the present invention will be described based on the examples shown in FIGS. 1 to 10.

本実施例では、桟橋等の杭支持構造物を例に説明し、図中符号1は杭支持構造物である。 In this embodiment, a pile support structure such as a pier will be described as an example, and reference numeral 1 in the drawing is a pile support structure.

杭支持構造物1は、図1に示すように、水底地盤2に打設された複数の鋼管杭等の杭柱状体3と、杭柱状体3に支持された鉄筋コンクリート造の梁部4とを備え、梁部4上に床版部5が形成され、梁部4と床版部5とで桟橋の上部工を成している。 As shown in FIG. 1, the pile support structure 1 includes a pile columnar body 3 such as a plurality of steel pipe piles cast on the submerged ground 2 and a reinforced concrete beam portion 4 supported by the pile columnar body 3. A floor slab portion 5 is formed on the beam portion 4, and the beam portion 4 and the floor slab portion 5 form a superstructure of the pier.

また、この杭支持構造物1は、図2に示すように、プレキャストコンクリート部材からなるコンクリート構造体6に形成された縦孔7と杭頭部とに跨って縦向きの補強鉄筋8,8…を杭頭部周方向に間隔をおいて配置し、縦孔7及び杭頭部にコンクリート9を打設することによって、杭柱状体3とコンクリート構造体6とが接合されている。 Further, as shown in FIG. 2, the pile support structure 1 has vertical reinforcing bars 8, 8 ... Straddling the vertical holes 7 formed in the concrete structure 6 made of precast concrete members and the pile heads. The pile columnar body 3 and the concrete structure 6 are joined by placing concrete 9 in the vertical hole 7 and the pile head at intervals in the circumferential direction of the pile head.

杭柱状体3は、鋼管杭、PHC杭又は場所打ちコンクリート杭等(本実施例では鋼管杭)であって、縦向きの中空筒状に形成されている。 The pile columnar body 3 is a steel pipe pile, a PHC pile, a cast-in-place concrete pile, or the like (steel pipe pile in this embodiment), and is formed in a vertically oriented hollow cylinder shape.

この杭柱状体3には、上端より所定の深さにコンクリート打設用の底型枠10が備えられている。 The pile column 3 is provided with a bottom formwork 10 for placing concrete at a predetermined depth from the upper end.

また、この杭柱状体3には、杭頭部に高さ調整部材11を備え、高さ調整部材11を介して後述する鉄筋連結プレート12が支持されるようになっている。 Further, the pile columnar body 3 is provided with a height adjusting member 11 at the pile head, and a reinforcing bar connecting plate 12 described later is supported via the height adjusting member 11.

高さ調整部材11は、図4に示すように、短辺方向を上下に向けた帯状の鋼板11a,11aを交差させた形状、本実施例では十字状に形成され、高さを調整しつつ杭頭部内に挿入され、杭柱状体3の上端部に溶接等によって固定されている。尚、高さ調整部材11の態様は、本実施例に限定されず、高さ調整可能な形状であればよい。 As shown in FIG. 4, the height adjusting member 11 has a shape obtained by intersecting strip-shaped steel plates 11a and 11a with the short side direction facing up and down, and is formed in a cross shape in this embodiment while adjusting the height. It is inserted into the pile head and fixed to the upper end of the pile column 3 by welding or the like. The aspect of the height adjusting member 11 is not limited to this embodiment, and any shape may be used as long as the height can be adjusted.

また、高さ調整部材11の上端には、隣り合う鋼板11a,11aの上面に跨って三角形状の取付用プレート11b,11b…が固定され、鉄筋連結プレート12に開口したガイド孔12aに挿入されるガイド部材13が着脱可能に取り付けられるようになっている。 Further, triangular mounting plates 11b, 11b ... Are fixed to the upper ends of the height adjusting member 11 so as to straddle the upper surfaces of the adjacent steel plates 11a, 11a, and are inserted into the guide holes 12a opened in the reinforcing bar connecting plate 12. The guide member 13 is detachably attached.

梁部4は、杭柱状体3に接合されたプレキャストコンクリート部材からなるコンクリート構造体6によって構成され、コンクリート構造体6には、杭柱状体3に接合される縦孔7が形成されている。 The beam portion 4 is composed of a concrete structure 6 made of a precast concrete member joined to the pile column 3, and the concrete structure 6 is formed with a vertical hole 7 to be joined to the pile column 3.

縦孔7の下部には、コンクリート構造体6の下部に配置され、杭柱状体3の頭部に支持される鉄筋連結プレート12を備え、鉄筋連結プレート12には、コンクリート構造体6の下側部分に埋設される水平鉄筋14,14…の端部が溶接等によって定着されている。 In the lower part of the vertical hole 7, a reinforcing bar connecting plate 12 arranged in the lower part of the concrete structure 6 and supported by the head of the pile column 3 is provided, and the reinforcing bar connecting plate 12 is provided on the lower side of the concrete structure 6. The ends of the horizontal reinforcing bars 14, 14 ... Embedded in the portion are fixed by welding or the like.

鉄筋連結プレート12は、図3に示すように、鋼板等によって構成され、中央にガイド孔12aが形成されるとともに、ガイド孔12aの外側に複数の補強鉄筋用貫通孔12b,12b…が周方向に間隔をおいて形成されている。 As shown in FIG. 3, the reinforcing bar connecting plate 12 is made of a steel plate or the like, a guide hole 12a is formed in the center, and a plurality of through holes 12b, 12b ... For reinforcing bars are formed outside the guide hole 12a in the circumferential direction. It is formed at intervals.

各補強鉄筋用貫通孔12b,12b…は、杭柱状体3の杭径を基に決定される各補強鉄筋8の配置に対応した位置であって、鉄筋連結プレート12の中心から杭柱状体3の内半径よりも近い位置にそれぞれ杭頭部周方向に間隔をおいて形成されている。 The through holes 12b, 12b ... For each reinforcing bar are positions corresponding to the arrangement of the reinforcing bars 8 determined based on the pile diameter of the pile column 3, and the pile column 3 is located from the center of the reinforcing bar connecting plate 12. It is formed at a position closer to the inner radius of the pile head at intervals in the circumferential direction of the pile head.

この各補強鉄筋用貫通孔12b,12b…は、棒状の補強鉄筋8,8…が貫通可能な径を有し、補強鉄筋8,8…が補強鉄筋用貫通孔12b,12b…を貫通し、縦孔7内と杭柱状体3内とに跨った配置で鉄筋連結プレート12に固定される。 The through holes 12b, 12b ... For each of the reinforcing bars have a diameter through which the rod-shaped reinforcing bars 8, 8 ... Can penetrate, and the reinforcing bars 8, 8 ... Penetrate the through holes 12b, 12b ... For the reinforcing bars. It is fixed to the reinforcing bar connecting plate 12 in an arrangement straddling the inside of the vertical hole 7 and the inside of the pile columnar body 3.

ガイド孔12aは、各補強鉄筋用貫通孔12b,12bと干渉しないように形成され、ガイド部材13に嵌め合わされることによって、鉄筋連結プレート12がガイド部材13に案内され、コンクリート構造体6が設置位置に誘導されるようになっている。 The guide holes 12a are formed so as not to interfere with the through holes 12b and 12b for the reinforcing reinforcing bars, and are fitted to the guide members 13 so that the reinforcing bar connecting plate 12 is guided to the guide members 13 and the concrete structure 6 is installed. It is designed to be guided to the position.

ガイド部材13は、図4に示すように、矩形のフランジ部13aと、フランジ部13aの上面に固定された鋼板からなるガイド板13b,13bとを備え、フランジ部13aの上面にガイド板13b,13bが十字状に配置されている。 As shown in FIG. 4, the guide member 13 includes a rectangular flange portion 13a and guide plates 13b and 13b made of steel plates fixed to the upper surface of the flange portion 13a, and the guide plate 13b is provided on the upper surface of the flange portion 13a. 13b are arranged in a cross shape.

各ガイド板13b,13bは、幅がガイド孔12aの内径とほぼ同じか若干狭く、その上部がそれぞれ先端側の細いテーパ状に形成されている。 The width of each of the guide plates 13b and 13b is substantially the same as or slightly narrower than the inner diameter of the guide hole 12a, and the upper portion thereof is formed in a thin taper shape on the tip side.

フランジ部13aには、ボルト挿通孔が形成されており、高さ調整部材11の上端に固定された取付用プレート11b,11b…にガイド部材13をボルト締めによって着脱可能に固定できるようになっている。 A bolt insertion hole is formed in the flange portion 13a, and the guide member 13 can be detachably fixed to the mounting plates 11b, 11b ... Fixed to the upper end of the height adjusting member 11 by bolting. There is.

次に、この杭柱状体の杭頭部接合方法について説明する。 Next, a method of joining the pile heads of the pile columnar body will be described.

事前準備として、工場又は施工現場近郊の製作ヤード等において、図5、図6に示すプレキャストコンクリート部材からなるコンクリート構造体6を製作する。 As a preliminary preparation, a concrete structure 6 made of the precast concrete members shown in FIGS. 5 and 6 is manufactured in a manufacturing yard or the like near the factory or the construction site.

このコンクリート構造体6の製作は、特に図示しないが、型枠内の底部に鉄筋連結プレート12を配置するとともに、型枠の上下側にそれぞれ水平鉄筋14,14…及び水平鉄筋17,17…を配置し、下側の水平鉄筋14,14…の端部を鉄筋連結プレート12に溶接等によって固定する。 Although not particularly shown, the concrete structure 6 is manufactured by arranging the reinforcing bar connecting plate 12 at the bottom of the formwork and placing horizontal reinforcing bars 14, 14 ... And horizontal reinforcing bars 17, 17 ... On the upper and lower sides of the formwork, respectively. Arrange and fix the ends of the lower horizontal reinforcing bars 14, 14 ... To the reinforcing bar connecting plate 12 by welding or the like.

そして、型枠内にコンクリートを打設し、縦孔7底部に鉄筋連結プレート12が配置されたプレキャストコンクリート部材からなるコンクリート構造体6を形成する。 Then, concrete is cast in the formwork to form a concrete structure 6 made of a precast concrete member in which the reinforcing bar connecting plate 12 is arranged at the bottom of the vertical hole 7.

一方、施工現場においては、まず、図4に示すように、水底地盤2に鋼管杭からなる杭柱状体3を打設し、杭柱状体3内の所定の深さに杭頭底型枠10を設置する。 On the other hand, at the construction site, first, as shown in FIG. 4, a pile column 3 made of steel pipe piles is driven into the bottom ground 2, and the pile head bottom formwork 10 is placed at a predetermined depth in the pile column 3. To install.

次に、杭柱状体3の設置高さを計測し、その高さに合わせて高さを調節しながら高さ調整部材11を固定し、高さ調整部材11上に固定した取付用プレート11bにガイド部材13を固定する。 Next, the installation height of the pile column 3 is measured, the height adjusting member 11 is fixed while adjusting the height according to the height, and the mounting plate 11b fixed on the height adjusting member 11 is used. The guide member 13 is fixed.

また、杭柱状体3の外周面には、コンクリート構造体6の縦孔7の下側を塞ぐ底型枠部材15を固定する。 Further, a bottom formwork member 15 that closes the lower side of the vertical hole 7 of the concrete structure 6 is fixed to the outer peripheral surface of the pile columnar body 3.

次に、図7に示すように、杭柱状体3の上方にコンクリート構造体6を移動させ、ガイド部材13にガイド孔12aを嵌め合わせ、鉄筋連結プレート12をガイド部材13に案内させてコンクリート構造体6を設置位置に誘導し、鉄筋連結プレート12を杭柱状体3に支持させ、コンクリート構造体6を杭柱状体3に仮支持させる。 Next, as shown in FIG. 7, the concrete structure 6 is moved above the pile columnar body 3, the guide hole 12a is fitted into the guide member 13, and the reinforcing bar connecting plate 12 is guided to the guide member 13 to guide the concrete structure. The body 6 is guided to the installation position, the reinforcing bar connecting plate 12 is supported by the pile column 3, and the concrete structure 6 is temporarily supported by the pile column 3.

その際、ガイド部材13にガイド孔12aを通して鉄筋連結プレート12を案内させることで、杭柱状体3とコンクリート構造体6との位置を容易に合わせることができる。 At that time, by guiding the reinforcing bar connecting plate 12 through the guide hole 12a through the guide member 13, the positions of the pile columnar body 3 and the concrete structure 6 can be easily aligned.

また、杭柱状体3にコンクリート構造体6を支持させることによって、底型枠部材15によって縦孔7の下側開口が塞がれる。 Further, by supporting the concrete structure 6 on the pile columnar body 3, the lower opening of the vertical hole 7 is closed by the bottom formwork member 15.

そして、杭柱状体3にコンクリート構造体6を仮支持させた状態で安定したら、ガイド部材13及び取付用プレート11b,11b…を取り外し撤去する。尚、取付用プレート11b,11bは、コンクリート打設時に邪魔にならなければ撤去せずともよい。 Then, when the concrete structure 6 is temporarily supported by the pile column 3 and stabilized, the guide member 13 and the mounting plates 11b, 11b ... Are removed and removed. The mounting plates 11b and 11b may not be removed if they do not interfere with the concrete placement.

次に、図9に示すように、各補強鉄筋用貫通孔12b,12b…に縦向きの補強鉄筋8,8…を貫通させ、所定の位置で補強鉄筋8,8…を鉄筋連結プレート12に固定するとともに、補強鉄筋8,8…の外側にフープ筋16,16…を上下に間隔を置いて配置し、結束線によって固定する。 Next, as shown in FIG. 9, the vertical reinforcing bars 8, 8 ... Are passed through the through holes 12b, 12b ... For the reinforcing bars, and the reinforcing bars 8, 8 ... Are inserted into the reinforcing bar connecting plate 12 at a predetermined position. In addition to fixing, hoop bars 16, 16 ... Are arranged on the outside of the reinforcing bars 8, 8 ... at intervals at the top and bottom, and are fixed by a binding wire.

その際、ガイド部材13によって杭柱状体3と鉄筋連結プレート12とが正確に位置合わせされているので、鉄筋連結プレート12の補強鉄筋用貫通孔12b,12b…に貫通させる各補強鉄筋8,8…の位置も自動的に位置決めされ、容易に取り付けることができる。 At that time, since the pile column 3 and the reinforcing bar connecting plate 12 are accurately aligned by the guide member 13, the reinforcing bars 8 and 8 to be penetrated through the reinforcing bar through holes 12b, 12b ... Of the reinforcing bar connecting plate 12 The position of ... is also automatically positioned and can be easily installed.

そして、縦孔7の上面よりガイド孔12aを通して、鉄筋連結プレート12と底型枠部材15とに挟まれた空隙及び杭柱状体3内にコンクリート9を打設する(一次打設)。 Then, the concrete 9 is cast into the gap between the reinforcing bar connecting plate 12 and the bottom formwork member 15 and the pile column 3 through the guide hole 12a from the upper surface of the vertical hole 7 (primary casting).

その後、一次打設したコンクリートの充填状態を確認し、図10に示すように、コンクリート構造体6の上部に配置された水平鉄筋17,17間に中継鉄筋18を機械式継手等によって連結した後、縦孔7内に場所打ちコンクリート9を投入し(二次打設)、養生固化させることによって、杭柱状体3の上端部にプレキャストコンクリート部材からなるコンクリート構造体6が接合される。 After that, the filling state of the concrete placed in the primary position was confirmed, and as shown in FIG. 10, the relay reinforcing bars 18 were connected between the horizontal reinforcing bars 17 and 17 arranged above the concrete structure 6 by a mechanical joint or the like. By pouring cast-in-place concrete 9 into the vertical hole 7 (secondary casting) and curing and solidifying it, the concrete structure 6 made of a precast concrete member is joined to the upper end of the pile columnar body 3.

尚、一次打設によるコンクリートの充填状況が確認できるのであれば、一次打設と二次打設を連続して行ってもよい。 If the filling status of concrete by the primary casting can be confirmed, the primary casting and the secondary casting may be continuously performed.

このように構成された杭柱状体3の頭部接合構造及び接合方法では、コンクリート構造体6の下部に配置される水平鉄筋14,14…が鉄筋連結プレート12を介して連続した構造にあるので、水平鉄筋14,14…を好適に配置することができるとともに、補強鉄筋8,8…との干渉を気にする必要がない。 In the head joining structure and joining method of the pile column 3 configured in this way, the horizontal reinforcing bars 14, 14 ... Arranged in the lower part of the concrete structure 6 have a continuous structure via the reinforcing bar connecting plate 12. , Horizontal reinforcing bars 14, 14 ... Can be preferably arranged, and there is no need to worry about interference with reinforcing reinforcing bars 8, 8 ...

また、杭柱状体3にコンクリート構造体6を支持させる際に、ガイド部材13に鉄筋連結プレート12に形成されたガイド孔12aを案内させることによって、杭柱状体3に対するコンクリート構造体6の位置決めを容易に行えるとともに、各補強鉄筋8,8…の位置決めを自動的に行うことができる。 Further, when the concrete structure 6 is supported by the pile column 3, the guide member 13 is guided by the guide hole 12a formed in the reinforcing bar connecting plate 12, so that the concrete structure 6 is positioned with respect to the pile column 3. It can be easily performed, and the positioning of the reinforcing bars 8, 8 ... Can be automatically performed.

尚、プレキャストコンクリート部材からなるコンクリート構造体6は、図11に示すように、鉄筋連結プレート12の上方に間隔をおいて鉄筋支持プレート20を備え、鉄筋支持プレート20に補強鉄筋8,8…の頭部を定着させてもよい。尚、上述の実施例と同様の構成には、同一符号を付して説明を省略する。 As shown in FIG. 11, the concrete structure 6 made of a precast concrete member is provided with reinforcing bar support plates 20 at intervals above the reinforcing bar connecting plate 12, and the reinforcing bars 8, 8 ... The head may be fixed. The same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

鉄筋支持プレート20は、図3に示す鉄筋連結プレート12と同様に形成され、鋼板等によって構成され、中央に作業用孔20aが形成されるとともに、作業用孔20aの外側に複数の補強鉄筋用貫通孔20b,20b…が周方向に間隔をおいて形成されている。 The reinforcing bar support plate 20 is formed in the same manner as the reinforcing bar connecting plate 12 shown in FIG. 3, is made of a steel plate or the like, has a working hole 20a formed in the center, and is used for a plurality of reinforcing reinforcing bars outside the working hole 20a. Through holes 20b, 20b ... Are formed at intervals in the circumferential direction.

各補強鉄筋8,8…は、上端部にネジ部を備え、鉄筋支持プレート20の補強鉄筋用貫通孔12b,12b…を通して垂下させ、鉄筋連結プレート12の補強鉄筋用貫通孔20b,20b…を貫通させた状態で上端部のネジ部にナット21を締め付けることによって鉄筋支持プレート20に定着される。 Each of the reinforcing bars 8, 8 ... Has a screw portion at the upper end and hangs down through the reinforcing bar through holes 12b, 12b ... Of the reinforcing bar support plate 20, and the reinforcing bar through holes 20b, 20b ... Of the reinforcing bar connecting plate 12 are provided. By tightening the nut 21 to the screw portion at the upper end in the penetrating state, the nut 21 is fixed to the reinforcing bar support plate 20.

また、この鉄筋支持プレート20には、コンクリート構造体6の上部に埋設される水平鉄筋17,17…の端部が溶接によって定着され、鉄筋支持プレート20を介して水平鉄筋17,17が連続して連結されている。 Further, the ends of the horizontal reinforcing bars 17, 17 ... Embedded in the upper part of the concrete structure 6 are fixed to the reinforcing bar support plate 20 by welding, and the horizontal reinforcing bars 17, 17 are continuous via the reinforcing bar support plate 20. Are connected.

また、コンクリート構造体6は、図12に示すように、鉄筋連結プレート12と鉄筋支持プレート20との間に複数のフープ筋支持柱50,50…を備え、フープ筋支持柱50,50…に環状又は螺旋状のフープ筋16,16が支持されているものであってもよい。尚、上述の実施例と同様の構成には同一符号を付して説明する。 Further, as shown in FIG. 12, the concrete structure 6 is provided with a plurality of hoop reinforcement support columns 50, 50 ... Between the reinforcing bar connecting plate 12 and the reinforcement support plate 20, and the hoop reinforcement support columns 50, 50 ... The annular or spiral hoop muscles 16, 16 may be supported. The same configurations as those in the above-described embodiment will be described with the same reference numerals.

尚、フープ筋支持柱50,50の外側には、コンクリート構造体6の成形時に縦孔7を形成するための筒状の型枠材51が配置されている。 On the outside of the hoop muscle support columns 50, 50, a tubular formwork 51 for forming a vertical hole 7 at the time of forming the concrete structure 6 is arranged.

この型枠材51は、コンクリート構造体6の成形時において、コンクリートとフープ筋支持柱50,50及びフープ筋16,16とを隔離する役割を担うものであり、フープ筋支持柱50,50を設置したことに伴い縦孔7内にそのまま残置されている。 The formwork member 51 plays a role of separating the concrete from the hoop muscle support columns 50 and 50 and the hoop reinforcements 16 and 16 at the time of forming the concrete structure 6, and the hoop reinforcement support columns 50 and 50 are used. With the installation, it is left as it is in the vertical hole 7.

フープ筋支持柱50,50…は、図13に示すように、鉄筋連結プレート12の補強鉄筋用貫通孔12b,12b…及び鉄筋支持プレート20の補強鉄筋用貫通孔20b,20bの外側に周方向に間隔をおいて配置され、端部がそれぞれ鉄筋連結プレート12及び鉄筋支持プレート20に溶接等によって固定されている。 As shown in FIG. 13, the hoop reinforcement support columns 50, 50 ... Are circumferentially outward to the reinforcing bar through holes 12b, 12b ... Of the reinforcing bar connecting plate 12 and the reinforcing bar through holes 20b, 20b of the reinforcing bar support plate 20. The ends are fixed to the reinforcing bar connecting plate 12 and the reinforcing bar support plate 20 by welding or the like, respectively.

各フープ筋16,16は、内径が各補強鉄筋用貫通孔12b,20bよりも外側に配置されるように設定され、フープ筋支持柱50,50…に結束線等によって固定されている。 The inner diameters of the hoop bars 16 and 16 are set to be arranged outside the through holes 12b and 20b for the reinforcing reinforcing bars, and are fixed to the hoop bar support columns 50, 50 ... By a binding wire or the like.

そして、補強鉄筋8,8…を補強鉄筋用貫通孔12b,20bに挿入することによって、図14に示すように、補強鉄筋8,8…がフープ筋16,16の内側に挿し込まれるようになっている。 Then, by inserting the reinforcing bars 8, 8 ... Into the through holes 12b, 20b for the reinforcing bars, the reinforcing bars 8, 8 ... Are inserted inside the hoop bars 16, 16 as shown in FIG. It has become.

各補強鉄筋8,8…は、上端部にネジ部を備え、鉄筋支持プレート20の補強鉄筋用貫通孔20b,20b…を通して垂下させ、鉄筋連結プレート12の補強鉄筋用貫通孔12b,12b…を貫通させた状態で上端部のネジ部にナット21を締め付けることによって鉄筋支持プレート20に定着される。 Each of the reinforcing bars 8, 8 ... Has a screw portion at the upper end and hangs down through the reinforcing bar through holes 20b, 20b ... Of the reinforcing bar support plate 20, and the reinforcing bar through holes 12b, 12b ... Of the reinforcing bar connecting plate 12 are provided. By tightening the nut 21 to the screw portion at the upper end in the penetrating state, the nut 21 is fixed to the reinforcing bar support plate 20.

挿し込まれた補強鉄筋8,8…は、縦孔7に作業員が入り、フープ筋16,16に結束線等によって固定される。 The inserted reinforcing reinforcing bars 8, 8 ... Are fixed to the hoop reinforcing bars 16, 16 by a binding wire or the like, with a worker entering the vertical holes 7.

そして、上述の実施例と同様に、縦孔7の上面より作業用孔20a及びガイド孔12aを通して、鉄筋連結プレート12と底型枠部材15とに挟まれた空隙及び杭柱状体3内にコンクリート9を打設する(一次打設)。 Then, as in the above-described embodiment, concrete is formed in the gap and the pile column 3 sandwiched between the reinforcing bar connecting plate 12 and the bottom formwork member 15 through the work hole 20a and the guide hole 12a from the upper surface of the vertical hole 7. Place 9 (primary placement).

その後、一次打設したコンクリートの充填状態を確認し、図15に示すように、縦孔7内に場所打ちコンクリート9を投入し(二次打設)、養生固化させることによって、杭柱状体3の上端部にプレキャストコンクリート部材からなるコンクリート構造体6が接合される。 After that, the filling state of the primary cast concrete was confirmed, and as shown in FIG. 15, the cast-in-place concrete 9 was put into the vertical hole 7 (secondary cast) and cured and solidified to form the pile column 3 A concrete structure 6 made of a precast concrete member is joined to the upper end portion of the concrete structure.

また、上述の実施例では、補強鉄筋8,8…毎にその上端部を鉄筋支持プレート20に定着させた例について説明したが、図16〜図18に示すように、鉄筋支持プレート20に各補強鉄筋用貫通孔20bを設けず、複数の補強鉄筋8,8…の上端部を定着プレート52に支持させておき、定着プレート52の外縁を鉄筋群挿通用開口部53の縁部に支持させ、各補強鉄筋8,8…の上端部を鉄筋支持プレート20に支持させるようにしもよい。尚、上述の実施例と同様の構成には同一符号を付して説明を省略する。 Further, in the above-described embodiment, an example in which the upper end portion of each of the reinforcing bars 8, 8 ... Is fixed to the reinforcing bar support plate 20 has been described, but as shown in FIGS. 16 to 18, each of the reinforcing bars supporting plates 20 has its upper end. The through holes 20b for the reinforcing bars are not provided, the upper ends of the plurality of reinforcing bars 8, 8 ... Are supported by the fixing plate 52, and the outer edge of the fixing plate 52 is supported by the edge of the reinforcing bar group insertion opening 53. , The upper end portions of the reinforcing reinforcing bars 8, 8 ... May be supported by the reinforcing bar support plate 20. The same reference numerals are given to the same configurations as those in the above-described embodiment, and the description thereof will be omitted.

この場合、定着プレート52に上端部が支持された複数の補強鉄筋8,8…からなる鉄筋群8Aの外側を環状又は螺旋状のフープ筋54で拘束することが望ましい。 In this case, it is desirable to restrain the outside of the reinforcing bar group 8A composed of a plurality of reinforcing bars 8, 8 ... whose upper end is supported by the fixing plate 52 with an annular or spiral hoop bar 54.

鉄筋支持プレート20に形成された鉄筋群挿通用開口部53は、鉄筋支持プレート20を板厚方向に貫通する円形孔状に形成され、複数の補強鉄筋8,8…からなる鉄筋群8A及びその外側を拘束するフープ筋54が挿通可能な大きさとなっている。 The reinforcing bar group insertion opening 53 formed in the reinforcing bar support plate 20 is formed in a circular hole shape penetrating the reinforcing bar support plate 20 in the plate thickness direction, and is the reinforcing bar group 8A composed of a plurality of reinforcing bars 8, 8 ... The hoop muscle 54 that restrains the outside has a size that allows it to be inserted.

定着プレート52は、中央部に作業用孔52aを有する円環状に形成され、作業用孔52aの外側に鉄筋連結プレート12に形成された補強鉄筋用貫通孔12b、12bと同様の配置に複数の補強鉄筋用貫通孔52b,52b…を有している。 The fixing plate 52 is formed in an annular shape having a work hole 52a in the central portion, and a plurality of fixing plates 52 are arranged in the same arrangement as the reinforcing bar through holes 12b and 12b formed in the reinforcing bar connecting plate 12 on the outside of the work hole 52a. It has through holes 52b, 52b ... For reinforcing reinforcing bars.

この定着プレート52は、外径が鉄筋群挿通用開口部53の内径よりも大きく、その外縁部が鉄筋群挿通用開口部53の縁部、即ち、鉄筋群挿通用開口部53外側の鉄筋支持プレート20上面に支持されるようになっている。 The outer diameter of the fixing plate 52 is larger than the inner diameter of the reinforcing bar group insertion opening 53, and the outer edge thereof is the edge of the reinforcing bar group insertion opening 53, that is, the reinforcing bar support outside the reinforcing bar group insertion opening 53. It is supported on the upper surface of the plate 20.

そして、各補強鉄筋8,8…は、定着プレート52の補強鉄筋用貫通孔52b,52b…を通して垂下され、その上端部にナット21を締め付けることによって定着プレート52に定着されるようになっている。 Then, the reinforcing reinforcing bars 8, 8 ... Are hung through the reinforcing reinforcing bar through holes 52b, 52b ... Of the fixing plate 52, and are fixed to the fixing plate 52 by tightening the nut 21 at the upper end thereof. ..

尚、定着プレート52の形状は、円形状に限定されず、外縁部の複数個所又は全部が鉄筋群挿通用開口部53の縁部上面に支持され、鉄筋群挿通用開口部53から脱落不能なものであればよい。 The shape of the fixing plate 52 is not limited to a circular shape, and a plurality of or all of the outer edge portions are supported on the upper surface of the edge portion of the reinforcing bar group insertion opening 53 and cannot be removed from the reinforcing bar group insertion opening 53. Anything is fine.

このように構成された杭柱状体の頭部接合方法は、図17に示すように、杭柱状体3の頭部に鉄筋連結プレート12を介してプレキャストコンクリート構造体6を支持させた後、定着プレート52に支持され、その外周がフープ筋54によって拘束された複数の補強鉄筋8,8…からなる鉄筋群8Aを縦孔7上より降下させ、鉄筋群挿通用開口部53に挿通させる。 As shown in FIG. 17, the head joining method of the pile columnar body configured in this manner is to support the precast concrete structure 6 on the head of the pile columnar body 3 via the reinforcing bar connecting plate 12 and then fix the pile columnar body. A reinforcing bar group 8A, which is supported by the plate 52 and whose outer periphery is restrained by the hoop bars 54, is lowered from above the vertical hole 7 and inserted into the reinforcing bar group insertion opening 53.

そして、所定の位置まで鉄筋群8Aを降下させると、定着プレート52に支持された各補強鉄筋8,8…が鉄筋連結プレート12に形成された補強鉄筋用貫通孔12b,12b…に貫通される。 Then, when the reinforcing bar group 8A is lowered to a predetermined position, the reinforcing reinforcing bars 8, 8 ... Supported by the fixing plate 52 are penetrated through the reinforcing bar through holes 12b, 12b ... Formed in the reinforcing bar connecting plate 12. ..

その際、各補強鉄筋8,8…が定着プレート52に支持されているので、各補強鉄筋8,8…の位置が自動的に鉄筋連結プレート12の補強鉄筋用貫通孔12b,12b…の位置に合わされて挿通されるようになっている。 At that time, since the reinforcing bars 8, 8 ... Are supported by the fixing plate 52, the positions of the reinforcing bars 8, 8 ... Are automatically positioned as the positions of the reinforcing bar through holes 12b, 12b ... Of the reinforcing bar connecting plate 12. It is designed to be inserted according to.

そして、鉄筋群8Aを更に降下させると、図18に示すように、定着プレート52の外縁が鉄筋群挿通用開口部53の縁部に支持され、各補強鉄筋8,8…の上端部が定着プレート52を介して鉄筋支持プレート20に支持される。 Then, when the reinforcing bar group 8A is further lowered, as shown in FIG. 18, the outer edge of the fixing plate 52 is supported by the edge portion of the reinforcing bar group insertion opening 53, and the upper ends of the reinforcing reinforcing bars 8, 8 ... Are fixed. It is supported by the reinforcing bar support plate 20 via the plate 52.

これによって、各補強鉄筋8,8…及びフープ筋54が縦孔7内の所定の位置に設置される。 As a result, the reinforcing reinforcing bars 8, 8 ... And the hoop reinforcing bars 54 are installed at predetermined positions in the vertical hole 7.

そして、上述の実施例と同様に、縦孔7の上面より作業用孔52a及びガイド孔12aを通して、鉄筋連結プレート12と底型枠部材15とに挟まれた空隙及び杭柱状体3内にコンクリート9を打設する(一次打設)。 Then, as in the above-described embodiment, the concrete is formed in the gap and the pile column 3 sandwiched between the reinforcing bar connecting plate 12 and the bottom formwork member 15 through the work hole 52a and the guide hole 12a from the upper surface of the vertical hole 7. Place 9 (primary placement).

その後、一次打設したコンクリートの充填状態を確認し、図19に示すように、縦孔7内に場所打ちコンクリート9を投入し(二次打設)、養生固化させることによって、杭柱状体3の上端部にプレキャストコンクリート部材からなるコンクリート構造体6が接合される。 After that, the filling state of the primary cast concrete was confirmed, and as shown in FIG. 19, the cast-in-place concrete 9 was put into the vertical hole 7 (secondary cast) and cured and solidified to form the pile column 3 A concrete structure 6 made of a precast concrete member is joined to the upper end portion of the concrete structure.

次に、本発明に係る杭柱状体の頭部接合構造の他の実施態様について図20〜24に基づいて説明する。尚、上述の実施例と同様の構成には、同一符号を付して説明を省略する。 Next, another embodiment of the head joint structure of the pile columnar body according to the present invention will be described with reference to FIGS. 20 to 24. The same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

この杭柱状体の頭部接合構造は、図20に示すように、杭柱状体3の上端に支持され、鉄筋連結プレート12下に配置された環状の緩衝部材60を備え、緩衝部材60の内側に形成された絞り部61を介して杭柱状体3とコンクリート構造体6とが接合されている。 As shown in FIG. 20, the head joint structure of the pile columnar body includes an annular cushioning member 60 supported at the upper end of the pile columnar body 3 and arranged under the reinforcing bar connecting plate 12, and is inside the cushioning member 60. The pile columnar body 3 and the concrete structure 6 are joined to each other via a drawing portion 61 formed in.

この杭柱状体3の頭部接合構造は、鉄筋連結プレート12を支持させる支持用凸部62を備えた高さ調整部材63を使用し、支持用凸部62の外側に円環状の緩衝部材60を嵌め込んだ状態で接合作業を行う。 The head joint structure of the pile column 3 uses a height adjusting member 63 provided with a supporting convex portion 62 for supporting the reinforcing bar connecting plate 12, and an annular cushioning member 60 outside the supporting convex portion 62. Perform the joining work with the above fitted.

高さ調整部材63は、図21に示すように、上端部の中央に凸部64aを有する凸形状の鋼板64,64から構成され、鋼板64,64を交差させた形状、本実施例では平面視十字状に形成され、凸部64aが互いに交差して周囲より上向きに突出した十字状の支持用凸部62が形成されている。 As shown in FIG. 21, the height adjusting member 63 is composed of convex steel plates 64, 64 having a convex portion 64a in the center of the upper end portion, and has a shape in which the steel plates 64, 64 are crossed, and is a flat surface in this embodiment. A cross-shaped supporting convex portion 62 is formed in which the convex portions 64a intersect with each other and project upward from the surroundings.

そして、高さを調整しつつ高さ調整部材63を杭頭部内に挿入し、鋼板64,64を杭柱状体3の上端部に溶接等によって固定する。 Then, the height adjusting member 63 is inserted into the pile head while adjusting the height, and the steel plates 64 and 64 are fixed to the upper end of the pile column 3 by welding or the like.

また、この高さ調整部材63には、支持用凸部62の周囲に鋼板上端部の凹部によって円環状の緩衝部材60が嵌まり込む緩衝材嵌合部が形成されている。 Further, the height adjusting member 63 is formed with a cushioning material fitting portion in which the annular cushioning member 60 is fitted by the concave portion at the upper end of the steel plate around the supporting convex portion 62.

緩衝部材60は、発砲スチロール材、発泡ウレタン材、ゴムスポンジ材等の低反発材によって構成され、中央に支持用凸部62と嵌合する開口部を有する円環状に形成されている。 The cushioning member 60 is made of a low-resilience material such as a styrofoam material, a urethane foam material, and a rubber sponge material, and is formed in an annular shape having an opening that fits with a supporting convex portion 62 in the center.

また、緩衝部材60は、厚みが支持用凸部62の高さと同じ或いはそれよりも厚く形成され、支持用凸部62が鉄筋連結プレート12を支持した状態で緩衝部材60の上面が鉄筋連結プレート12に当接するようになっている。 Further, the cushioning member 60 is formed to have a thickness equal to or thicker than the height of the supporting convex portion 62, and the upper surface of the cushioning member 60 is a reinforcing bar connecting plate with the supporting convex portion 62 supporting the reinforcing bar connecting plate 12. It is designed to come into contact with 12.

尚、高さ調整部材63の支持用凸部62の上端には、隣り合う凸部64aの上面に跨って三角形状の取付用プレート65,65…が固定され、鉄筋連結プレート12に開口したガイド孔12aに挿入されるガイド部材13が着脱可能に取り付けられるようになっている。 At the upper end of the supporting convex portion 62 of the height adjusting member 63, triangular mounting plates 65, 65 ... Are fixed across the upper surfaces of the adjacent convex portions 64a, and a guide opened in the reinforcing bar connecting plate 12. The guide member 13 to be inserted into the hole 12a is detachably attached.

このコンクリート構造体6と杭柱状体3を接合するには、図22に示すように、杭柱状体3の上方にコンクリート構造体6を移動させ、ガイド部材13にガイド孔12aを嵌め合わせ、鉄筋連結プレート12をガイド部材13に案内させてコンクリート構造体6を設置位置に誘導し、鉄筋連結プレート12を高さ調整部材63を介して杭柱状体3に支持させ、コンクリート構造体6を杭柱状体3に仮支持させる。 In order to join the concrete structure 6 and the pile column 3 as shown in FIG. 22, the concrete structure 6 is moved above the pile column 3, the guide hole 12a is fitted into the guide member 13, and the reinforcing bar is reinforced. The connecting plate 12 is guided by the guide member 13 to guide the concrete structure 6 to the installation position, the reinforcing bar connecting plate 12 is supported by the pile column 3 via the height adjusting member 63, and the concrete structure 6 is supported by the pile column. Temporarily support the body 3.

その際、ガイド部材13にガイド孔12aを通して鉄筋連結プレート12を案内させることで、杭柱状体3とコンクリート構造体6との位置を容易に合わせることができる。 At that time, by guiding the reinforcing bar connecting plate 12 through the guide hole 12a through the guide member 13, the positions of the pile columnar body 3 and the concrete structure 6 can be easily aligned.

また、鉄筋連結プレート12を支持用凸部62に支持させることによって、緩衝部材60が鉄筋連結プレート12下に当接した状態で配置される。 Further, by supporting the reinforcing bar connecting plate 12 on the supporting convex portion 62, the cushioning member 60 is arranged in a state of being in contact with the reinforcing bar connecting plate 12.

また、杭柱状体3にコンクリート構造体6を支持させることによって、底型枠部材15によって縦孔7の下側開口が塞がれる。 Further, by supporting the concrete structure 6 on the pile columnar body 3, the lower opening of the vertical hole 7 is closed by the bottom formwork member 15.

そして、杭柱状体3にコンクリート構造体6を仮支持させた状態で安定したら、ガイド部材13及び取付用プレート65,65を取り外し撤去する。 Then, when the concrete structure 6 is temporarily supported by the pile column 3 and stabilized, the guide member 13 and the mounting plates 65 and 65 are removed and removed.

次に、図23に示すように、各補強鉄筋用貫通孔12b,12b…に縦向きの補強鉄筋8,8…を貫通させ、所定の位置で補強鉄筋8,8…を鉄筋連結プレート12に固定するとともに、補強鉄筋8,8…の外側にフープ筋16,16…を上下に間隔を置いて配置し、結束線によって固定する。 Next, as shown in FIG. 23, the vertical reinforcing bars 8, 8 ... Are passed through the through holes 12b, 12b ... For the reinforcing bars, and the reinforcing bars 8, 8 ... Are inserted into the reinforcing bar connecting plate 12 at a predetermined position. In addition to fixing, hoop bars 16, 16 ... Are arranged on the outside of the reinforcing bars 8, 8 ... at intervals at the top and bottom, and are fixed by a binding wire.

その際、ガイド部材13によって杭柱状体3と鉄筋連結プレート12とが正確に位置合わせされているので、鉄筋連結プレート12の補強鉄筋用貫通孔12b,12b…に貫通させる各補強鉄筋8,8…の位置も自動的に位置決めされ、容易に取り付けることができる。 At that time, since the pile column 3 and the reinforcing bar connecting plate 12 are accurately aligned by the guide member 13, the reinforcing bars 8 and 8 to be penetrated through the reinforcing bar through holes 12b, 12b ... Of the reinforcing bar connecting plate 12 The position of ... is also automatically positioned and can be easily installed.

そして、縦孔7の上面よりガイド孔12aを通して、図24に示すように、鉄筋連結プレート12と底型枠部材15、緩衝部材60とに挟まれた空隙67及び杭柱状体3内にコンクリート66を打設する(一次打設)。 Then, as shown in FIG. 24, the concrete 66 is formed in the gap 67 and the pile column 3 sandwiched between the reinforcing bar connecting plate 12, the bottom formwork member 15, and the cushioning member 60 through the guide hole 12a from the upper surface of the vertical hole 7. (Primary placement).

この一次打設では、鉄筋連結プレート12下に円環状の緩衝部材60が配置されているので、緩衝部材60が型枠として機能し、緩衝部材60の内側に杭柱状体3の径よりも径の小さな絞り部61が形成される。 In this primary casting, since the annular cushioning member 60 is arranged under the reinforcing bar connecting plate 12, the cushioning member 60 functions as a formwork and has a diameter larger than the diameter of the pile column 3 inside the cushioning member 60. A small drawing portion 61 is formed.

その後、一次打設したコンクリートを養生・固化させた後、図20に示すように、コンクリート構造体6の上部に配置された水平鉄筋17,17間に中継鉄筋18を機械式継手等によって連結した後、縦孔7内に場所打ちコンクリート9を投入し(二次打設)、養生固化させることによって、杭柱状体3の上端部に絞り部61を介してプレキャストコンクリート部材からなるコンクリート構造体6が接合される。 Then, after the primary cast concrete was cured and solidified, as shown in FIG. 20, a relay reinforcing bar 18 was connected between the horizontal reinforcing bars 17 and 17 arranged above the concrete structure 6 by a mechanical joint or the like. After that, cast-in-place concrete 9 is put into the vertical hole 7 (secondary casting) and cured and solidified, so that the concrete structure 6 made of a precast concrete member is formed at the upper end of the pile column 3 via a drawing portion 61. Are joined.

このように構成された杭柱状体3の接合構造は、杭柱状体3の径よりも小さな絞り部61を介してコンクリート構造体6と杭柱状体3とが接合されるとともに、コンクリート構造体6と杭柱状体3との間に緩衝部材60が介在される。 In the joint structure of the pile column 3 configured in this way, the concrete structure 6 and the pile column 3 are joined via a drawing portion 61 smaller than the diameter of the pile column 3, and the concrete structure 6 is formed. A cushioning member 60 is interposed between the pile column and the pile column 3.

また、コンクリート構造体6と杭柱状体3との間に跨って補強鉄筋8,8が配設される。 Further, reinforcing reinforcing bars 8 and 8 are arranged so as to straddle between the concrete structure 6 and the pile columnar body 3.

よって、杭柱状体3とコンクリート構造体6とが半剛接合となり、地震等によって杭頭部に応力が作用した際、コンクリート構造体6に対し杭柱状体3が水平方向又は回転方向に揺動でき、接合部に生じる曲げモーメントを軽減し、杭柱状体3及びコンクリート構造体6について合理的な設計を行うことができる。 Therefore, when the pile column 3 and the concrete structure 6 are semi-rigidly joined and stress is applied to the pile head due to an earthquake or the like, the pile column 3 swings in the horizontal direction or the rotational direction with respect to the concrete structure 6. It is possible to reduce the bending moment generated at the joint, and to make a rational design for the pile column 3 and the concrete structure 6.

次に、本発明に係る杭柱状体の頭部接合構造及び接合方法の他の態様について図25〜図29に示す実施例に基づいて説明する。 Next, the head joining structure and the joining method of the pile columnar body according to the present invention will be described with reference to the examples shown in FIGS. 25 to 29.

本実施例では、杭柱状体30である基礎杭の頭部に場所打ちコンクリートからなるフーチング等のコンクリート構造体31を接合する場合について説明し、図中符号30は基礎杭、符号31はフーチングである。 In this embodiment, a case where a concrete structure 31 such as a footing made of cast-in-place concrete is joined to the head of a foundation pile which is a pile columnar body 30, reference numeral 30 in the drawing is a foundation pile, and reference numeral 31 is a footing. is there.

フーチング31は、その下部に杭柱状体30の頭部に支持される鉄筋連結プレート32を備え、この鉄筋連結プレート32に縦向きの補強鉄筋33,33…が周方向に間隔をおいて貫通されるとともに、コンクリート構造体31に埋設される水平鉄筋34,34…が定着され、杭頭部とコンクリート構造体31とに跨って配置された補強鉄筋33,33…によって杭頭曲げモーメントに抵抗する構造になっている。 The footing 31 is provided with a reinforcing bar connecting plate 32 supported by the head of the pile columnar body 30 at its lower portion, and vertical reinforcing bars 33, 33 ... Are penetrated through the reinforcing bar connecting plate 32 at intervals in the circumferential direction. At the same time, the horizontal reinforcing bars 34, 34 ... Embedded in the concrete structure 31 are fixed, and the reinforcing bars 33, 33 ... Arranged across the pile head and the concrete structure 31 resist the pile head bending moment. It has a structure.

この杭柱状体30とコンクリート構造体31とを接合するには、先ず、図26に示すように、地中に鋼管杭等の杭柱状体30を打設し、しかる後、杭柱状体30の上端部を地表面より突出させるとともに、杭柱状体30内の土砂を所定の深さまで掘削する。 In order to join the pile column 30 and the concrete structure 31, first, as shown in FIG. 26, a pile column 30 such as a steel pipe pile is placed in the ground, and then the pile column 30 is formed. The upper end is projected from the ground surface, and the earth and sand in the pile column 30 is excavated to a predetermined depth.

また、地表面に砕石を敷設して砕石層35を形成し、その砕石層35上に均しコンクリート36を打設して地表面を均一に均す。 In addition, crushed stone is laid on the ground surface to form a crushed stone layer 35, and leveling concrete 36 is cast on the crushed stone layer 35 to uniformly level the ground surface.

次に、図27に示すように、杭柱状体30の突出高さを計測し、その高さに合わせて高さを調節しながら鋼製の板状又は棒状に形成された高さ調整部材38,38…を地表面から突出した杭柱状体30の上端部に固定し、その上面に杭柱状体30の中心とガイド孔32aの中心とを合わせて鉄筋連結プレート32を載置し、その位置で溶接等によって固定する。 Next, as shown in FIG. 27, the height adjusting member 38 formed in the shape of a steel plate or a rod while measuring the protruding height of the pile columnar body 30 and adjusting the height according to the height. , 38 ... Are fixed to the upper end of the pile columnar body 30 protruding from the ground surface, and the reinforcing bar connecting plate 32 is placed on the upper surface of the pile columnar body 30 with the center of the pile columnar body 30 and the center of the guide hole 32a aligned. Fix by welding etc.

尚、高さ調整部材38,38は、必ずしも使用する必要はなく、杭柱状体30の突出高さの計測結果によって、直接杭柱状体30上に鉄筋連結プレート32を直接載置し、その位置で溶接等によって固定してもよい。 The height adjusting members 38 and 38 do not necessarily have to be used, and the reinforcing bar connecting plate 32 is directly placed on the pile column 30 according to the measurement result of the protruding height of the pile column 30, and the position thereof. It may be fixed by welding or the like.

また、杭柱状体30に対する鉄筋連結プレート32の位置決めには、図1〜図10に示す実施例と同様に高さ調整部材11とガイド部材13を使用してもよい。 Further, the height adjusting member 11 and the guide member 13 may be used for positioning the reinforcing bar connecting plate 32 with respect to the pile columnar body 30 as in the embodiment shown in FIGS. 1 to 10.

次に、図28に示すように、各補強鉄筋用貫通孔32b,32b…に縦向きの補強鉄筋33,33…を貫通させ、所定に位置で補強鉄筋33,33…を鉄筋連結プレート32に固定するとともに、強鉄筋の外側にフープ筋39,39…を上下に間隔を置いて配置し、結束線によって固定する。 Next, as shown in FIG. 28, the vertical reinforcing bars 33, 33 ... Are passed through the through holes 32b, 32b ... For the reinforcing bars, and the reinforcing bars 33, 33 ... Are inserted into the reinforcing bar connecting plate 32 at predetermined positions. While fixing, hoop bars 39, 39 ... Are arranged on the outside of the strong reinforcing bar at intervals at the top and bottom, and fixed by a binding wire.

その際、鉄筋連結プレート32の補強鉄筋用貫通孔32b,32b…に貫通させる各補強鉄筋33,33…の位置も自動的に位置決めされ、容易に取り付けることができる。 At that time, the positions of the reinforcing bars 33, 33 ... Penetrating the reinforcing bar through holes 32b, 32b ... Of the reinforcing bar connecting plate 32 are also automatically positioned and can be easily attached.

そして、補強鉄筋33,33…の設置が完了したら、ガイド孔32aを通して杭柱状体30内にコンクリート(中詰めコンクリート)40を打設する。尚、中詰めコンクリートの打設は、後述するコンクリート構造体31を構成する場所打ちコンクリートの打設と同時に行ってもよい。 Then, when the installation of the reinforcing bars 33, 33 ... Is completed, the concrete (filled concrete) 40 is placed in the pile column 30 through the guide hole 32a. The filling concrete may be placed at the same time as the cast-in-place concrete constituting the concrete structure 31 described later.

次に、図29に示すように、コンクリート体31の下部に水平鉄筋34,34…を配置するとともに、コンクリート構造体31の下部に配置される水平鉄筋34,34…の端部を溶接によって鉄筋連結プレート32に定着させる。 Next, as shown in FIG. 29, the horizontal reinforcing bars 34, 34 ... Are arranged in the lower part of the concrete body 31, and the ends of the horizontal reinforcing bars 34, 34 ... Arranged in the lower part of the concrete structure 31 are welded to the reinforcing bars. It is fixed to the connecting plate 32.

また、コンクリート構造体31の上部に水平鉄筋42,42…を配置するとともに、あばら筋43,43…等の必要な鉄筋を設置する。 Further, horizontal reinforcing bars 42, 42 ... Are arranged on the upper part of the concrete structure 31, and necessary reinforcing bars such as stirrups 43, 43 ... Are installed.

そして、水平鉄筋34,34、水平鉄筋42,42及びあばら筋43,43の配置が完了した後、型枠41を組みたて、設置する。 Then, after the arrangement of the horizontal reinforcing bars 34, 34, the horizontal reinforcing bars 42, 42 and the stirrups 43, 43 is completed, the formwork 41 is assembled and installed.

そして、図25に示すように、型枠41内にコンクリートを打設し、コンクリート構造体31を形成し、コンクリートを養生・固化させることによって、杭柱状体30とコンクリート構造体31とが接合される。 Then, as shown in FIG. 25, concrete is cast in the formwork 41 to form a concrete structure 31, and the pile columnar body 30 and the concrete structure 31 are joined by curing and solidifying the concrete. To.

1 杭支持構造物
2 水底地盤
3 杭柱状体
4 梁部
5 床版部
6 コンクリート構造体
7 縦孔
8 補強鉄筋
9 コンクリート
10 底型枠
11 高さ調整部材
12 鉄筋連結プレート
13 ガイド部材
14 水平鉄筋
15 底型枠部材
16 フープ筋
17 水平鉄筋
18 中継鉄筋
20 鉄筋支持プレート
30 杭柱状体
31 コンクリート構造体
32 鉄筋連結プレート
33 補強鉄筋
34 水平鉄筋
35 砕石層
36 均しコンクリート
38 高さ調整部材
39 フープ筋
40 コンクリート
41 型枠
42 水平鉄筋
43 あばら筋
50 フープ筋支持柱
51 型枠材
52 定着プレート
53 鉄筋群挿通用開口部
54 フープ筋
60 緩衝部材
61 絞り部
62 支持用凸部
63 高さ調整部材
64 鋼板
65 取付用プレート
66 コンクリート
67 空隙
1 Pile support structure 2 Underwater ground 3 Pile columnar body 4 Beam part 5 Floor slab part 6 Concrete structure 7 Vertical hole 8 Reinforcing bar 9 Concrete 10 Bottom form 11 Height adjusting member 12 Reinforcing bar connecting plate 13 Guide member 14 Horizontal reinforcing bar 15 Bottom form member 16 Hoop reinforcement 17 Horizontal reinforcement 18 Relay reinforcement 20 Reinforcing bar support plate 30 Pile columnar body 31 Concrete structure 32 Reinforcing bar connecting plate 33 Reinforcing reinforcement 34 Horizontal reinforcing bar 35 Crushed stone layer 36 Leveling concrete 38 Height adjusting member 39 Hoop Reinforcing bar 40 Concrete 41 Form 42 Horizontal reinforcing bar 43 Stirrup bar 50 Hoop reinforcement Support pillar 51 Form frame material 52 Fixing plate 53 Reinforcing bar group insertion opening 54 Hoop reinforcement 60 Cushioning member 61 Squeezing part 62 Supporting convex part 63 Height adjusting member 64 Steel plate 65 Mounting plate 66 Concrete 67 Void

Claims (20)

杭柱状体の頭部にコンクリート構造体が接合されてなる杭柱状体の頭部接合構造において、
前記コンクリート構造体の下部に配置され、前記杭柱状体の頭部に支持される鉄筋連結プレートを備え、
前記鉄筋連結プレートには、前記コンクリート構造体に埋設される水平鉄筋が定着され、且つ、前記コンクリート構造体と前記杭柱状体とに跨って配置される補強鉄筋が貫通される補強鉄筋用貫通孔を備えていることを特徴とする杭柱状体の頭部接合構造。
In the head joining structure of the pile column, which is formed by joining the concrete structure to the head of the pile column.
It is provided with a reinforcing bar connecting plate arranged at the bottom of the concrete structure and supported by the head of the pile column.
A through hole for reinforcing bars, in which horizontal reinforcing bars embedded in the concrete structure are fixed to the reinforcing bar connecting plate, and reinforcing bars arranged across the concrete structure and the pile columnar body are penetrated. A head joint structure of a pile columnar body characterized by being equipped with.
前記杭柱状体は、杭頭部に高さ調整部材を備え、前記鉄筋連結プレートが前記高さ調整部材を介して前記杭柱状体の頭部に支持されている請求項1に記載の杭柱状体の頭部接合構造。 The pile column according to claim 1, wherein the pile column has a height adjusting member on the pile head, and the reinforcing bar connecting plate is supported on the head of the pile column via the height adjusting member. Head joint structure of the body. 前記コンクリート構造体は、プレキャストコンクリート部材であって、前記鉄筋連結プレートは、前記プレキャストコンクリート部材に形成された縦孔の下部に配置されている請求項1又は2に記載の杭柱状体の頭部接合構造。 The head of the pile columnar body according to claim 1 or 2, wherein the concrete structure is a precast concrete member, and the reinforcing bar connecting plate is arranged below a vertical hole formed in the precast concrete member. Joined structure. 前記鉄筋連結プレートの上方に間隔をおいて鉄筋支持プレートを備え、該鉄筋支持プレートに前記コンクリート構造体に埋設される水平鉄筋が定着されるとともに、前記補強鉄筋が定着される請求項1〜3の何れか一に記載の杭柱状体の頭部接合構造。 Claims 1 to 3 in which reinforcing bar support plates are provided above the reinforcing bar connecting plate at intervals, and horizontal reinforcing bars embedded in the concrete structure are fixed to the reinforcing bar support plates, and the reinforcing reinforcing bars are fixed. The head joint structure of the pile columnar body according to any one of. 前記鉄筋支持プレートは、前記補強鉄筋が貫通される補強鉄筋用貫通孔を備えている請求項4に記載の杭柱状体の頭部接合構造。 The head joint structure of a pile columnar body according to claim 4, wherein the reinforcing bar support plate is provided with a through hole for reinforcing reinforcing bars through which the reinforcing reinforcing bars are penetrated. 前記鉄筋支持プレートには、複数の補強鉄筋からなる鉄筋群が挿通される鉄筋群挿通用開口部が形成されるとともに、外縁が前記鉄筋群挿通用開口部の縁部に支持される定着プレートを備え、
該定着プレートに前記複数の補強鉄筋の上端部が支持され、前記複数の補強鉄筋が前記定着プレートを介して前記鉄筋支持プレートに支持されるとともに、前記定着プレートに支持された前記補強鉄筋が前記鉄筋連結プレートに形成された前記補強鉄筋用貫通孔に貫通されている請求項4に記載の杭柱状体の頭部接合構造。
The reinforcing bar support plate is formed with a reinforcing bar group insertion opening through which a reinforcing bar group composed of a plurality of reinforcing bars is inserted, and a fixing plate whose outer edge is supported by the edge of the reinforcing bar group insertion opening. Prepare,
The upper end portions of the plurality of reinforcing bars are supported by the fixing plate, the plurality of reinforcing bars are supported by the reinforcing bar support plate via the fixing plate, and the reinforcing bars supported by the fixing plate are supported by the fixing plate. The head joint structure of a pile columnar body according to claim 4, which is penetrated through the through hole for reinforcing reinforcing bars formed in the reinforcing bar connecting plate.
前記定着プレートに上端部が支持された複数の補強鉄筋からなる補強鉄筋群の外側が環状又は螺旋状のフープ筋で拘束されている請求項6に記載の杭柱状体の頭部接合構造。 The head joint structure of a pile columnar body according to claim 6, wherein the outer side of the reinforcing bar group composed of a plurality of reinforcing bars whose upper end is supported by the fixing plate is restrained by an annular or spiral hoop bar. 前記鉄筋連結プレートと前記鉄筋支持プレートとの間に複数のフープ筋支持柱を備え、該フープ筋支持柱に環状又は螺旋状のフープ筋が支持されている請求項4〜6の何れか一に記載の杭柱状体の頭部接合構造。 According to any one of claims 4 to 6, a plurality of hoop muscle support columns are provided between the reinforcing bar connecting plate and the reinforcing bar support plate, and an annular or spiral hoop muscle is supported on the hoop muscle support columns. The head joint structure of the described pile column. 前記複数のフープ筋支持柱の外側に縦孔形成用の型枠材を備えている請求項8に記載の杭柱状体の頭部接合構造。 The head joint structure of a pile columnar body according to claim 8, wherein a formwork material for forming a vertical hole is provided on the outside of the plurality of hoop muscle support columns. 前記杭柱状体の頭部に着脱可能に突設され、前記鉄筋連結プレートに開口したガイド孔に挿入されるガイド部材を備え、前記補強鉄筋用貫通孔は、前記ガイド孔の外側に周方向に間隔をおいて配置されている請求項1〜9の何れか一に記載の杭柱状体の頭部接合構造。 A guide member is provided that is detachably projected from the head of the pile columnar body and is inserted into a guide hole opened in the reinforcing bar connecting plate, and the through hole for reinforcing reinforcing bars is provided in the circumferential direction outside the guide hole. The head joint structure of a pile columnar body according to any one of claims 1 to 9, which is arranged at intervals. 前記杭柱状体の上端に支持され、前記鉄筋連結プレート下に配置された環状の緩衝部材を備え、該緩衝部材の内側に形成された絞り部を介して前記杭柱状体と前記コンクリート構造体とが接合されている請求項1〜10の何れか一に記載の杭柱状体の頭部接合構造。 An annular cushioning member supported at the upper end of the pile columnar body and arranged under the reinforcing bar connecting plate is provided, and the pile columnar body and the concrete structure are formed via a drawing portion formed inside the cushioning member. The head joint structure of the pile columnar body according to any one of claims 1 to 10, wherein the pile columnar body is joined. 杭柱状体の頭部にコンクリート構造体を接合する杭柱状体の頭部接合方法において、
前記コンクリート構造体の下部に配置され、前記コンクリート体に埋設される水平鉄筋が定着された鉄筋連結プレートを備え、
前記杭柱状体の頭部に前記鉄筋連結プレートを支持させ、その状態で前記鉄筋連結プレートに形成された補強鉄筋用貫通孔を通して補強鉄筋を前記鉄筋連結プレートの上下に跨って配置し、しかる後、コンクリートを打設して前記杭柱状体の頭部に前記コンクリート構造体を接合することを特徴とする杭柱状体の頭部接合方法。
In the method of joining the head of a pile column to join a concrete structure to the head of a pile column,
A reinforcing bar connecting plate arranged under the concrete structure and having horizontal reinforcing bars embedded in the concrete body fixed therein is provided.
The reinforcing bar connecting plate is supported on the head of the pile columnar body, and in that state, the reinforcing reinforcing bars are arranged over and above the reinforcing bar connecting plate through the through holes for the reinforcing bars formed in the reinforcing bar connecting plate. , A method for joining the head of a pile column, which comprises placing concrete and joining the concrete structure to the head of the pile column.
前記コンクリート構造体は、プレキャストコンクリート部材であって、前記鉄筋連結プレートを前記プレキャストコンクリート部材に形成された縦孔の下部に配置しておき、前記杭柱状体の頭部に前記鉄筋連結プレートを介して前記プレキャストコンクリート部材を支持させ、その状態で前記鉄筋連結プレートに形成された補強鉄筋用貫通孔を通して補強鉄筋を前記プレキャストコンクリート部材と前記杭柱状体とに跨って配置し、しかる後、前記縦孔にコンクリートを打設して前記杭柱状体の頭部にプレキャストコンクリート部材を接合する請求項12に記載の杭柱状体の頭部接合方法。 The concrete structure is a precast concrete member, and the reinforcing bar connecting plate is arranged below a vertical hole formed in the precast concrete member, and the reinforcing bar connecting plate is interposed at the head of the pile columnar body. The precast concrete member is supported, and in that state, the reinforcing reinforcing bars are arranged across the precast concrete member and the pile columnar body through the through hole for the reinforcing reinforcing bar formed in the reinforcing bar connecting plate, and then the vertical The method for joining the head of a pile column according to claim 12, wherein concrete is poured into the hole and the precast concrete member is joined to the head of the pile column. 前記杭柱状体の頭部に高さを調整した高さ調整部材を固定し、該高さ調整部材上に前記鉄筋連結プレートを支持させる請求項12又は13に記載の杭柱状体の頭部接合方法。 The head joining of the pile columnar body according to claim 12 or 13, wherein a height adjusting member whose height is adjusted is fixed to the head of the pile columnar body, and the reinforcing bar connecting plate is supported on the height adjusting member. Method. 前記高さ調整部材は、中央部に前記鉄筋連結プレートを支持させる支持用凸部を備え、該支持用凸部の外側に円環状の緩衝部材を嵌め込んだ状態で前記支持用凸部に前記鉄筋連結プレートを支持させ、しかる後、前記コンクリートを打設して前記杭柱状体と前記コンクリート構造体とを接合するとともに、前記緩衝部材の内側に前記杭柱状体の径より小さい絞り部を形成し、該絞り部を介して前記杭柱状体と前記コンクリート構造体とを接合する請求項14に記載の杭柱状体の頭部接合方法。 The height adjusting member is provided with a supporting convex portion for supporting the reinforcing bar connecting plate in the central portion, and the supporting convex portion is fitted with an annular cushioning member on the outside of the supporting convex portion. The reinforcing bar connecting plate is supported, and then the concrete is cast to join the pile column and the concrete structure, and a drawing portion smaller than the diameter of the pile column is formed inside the cushioning member. The head joining method for a pile column according to claim 14, wherein the pile column and the concrete structure are joined via the throttle portion. 前記杭柱状体の頭部に着脱可能に取り付けたガイド部材に、前記鉄筋連結プレートに開口したガイド孔を嵌め合わせ、前記鉄筋連結プレートを前記ガイド部材に案内させて前記コンクリート構造体を設置位置に誘導し、前記杭柱状体に前記鉄筋連結プレートを支持させ、前記ガイド孔の外側に周方向に間隔をおいて配置された補強鉄筋用貫通孔に補強鉄筋を挿入する請求項12〜15の何れか一に記載の杭柱状体の頭部接合方法。 A guide hole opened in the reinforcing bar connecting plate is fitted into a guide member detachably attached to the head of the pile column, and the reinforcing bar connecting plate is guided to the guide member to position the concrete structure at the installation position. Any of claims 12 to 15 for guiding, supporting the reinforcing bar connecting plate on the pile columnar body, and inserting the reinforcing bar into through holes for reinforcing bars arranged outside the guide hole at intervals in the circumferential direction. The method for joining the heads of pile columnar bodies according to Kaichi. 前記鉄筋連結プレートの上方に間隔をおいて鉄筋支持プレートを設けておき、該鉄筋支持プレートに前記コンクリート構造体に埋設される水平鉄筋を定着するとともに、前記補強鉄筋を定着する請求項12〜16の何れか一に記載の杭柱状体の頭部接合方法。 Claims 12 to 16 in which reinforcing bar support plates are provided above the reinforcing bar connecting plate at intervals, and horizontal reinforcing bars embedded in the concrete structure are fixed to the reinforcing bar support plates, and the reinforcing reinforcing bars are fixed. The method for joining the head of a pile columnar body according to any one of the above. 複数の補強鉄筋の上端部を定着プレートに支持させておき、前記杭柱状体の頭部に前記鉄筋連結プレートを介して前記プレキャストコンクリート部材を支持させた後、前記定着プレートに支持させた複数の補強鉄筋を前記鉄筋支持プレートに形成された鉄筋群挿通用開口部を挿通させるとともに、前記鉄筋連結プレートに形成された前記補強鉄筋用貫通孔に貫通させ、前記定着プレートの外縁を前記鉄筋群挿通用開口部の縁部に支持させ、各補強鉄筋の上端部を前記定着プレートを介して前記鉄筋支持プレートに支持させる請求項17に記載の杭柱状体の頭部接合方法。 The upper ends of the plurality of reinforcing bars are supported by the fixing plate, the precast concrete member is supported by the head of the pile columnar body via the reinforcing bar connecting plate, and then the plurality of supported by the fixing plate. The reinforcing bar is inserted through the reinforcing bar group insertion opening formed in the reinforcing bar support plate, and is penetrated through the reinforcing bar through hole formed in the reinforcing bar connecting plate, and the outer edge of the fixing plate is inserted into the reinforcing bar group insertion. The head joining method for a pile columnar body according to claim 17, wherein the edge portion of the general opening is supported, and the upper end portion of each reinforcing reinforcing bar is supported by the reinforcing bar support plate via the fixing plate. 前記定着プレートに上端部が支持された複数の補強鉄筋からなる鉄筋群の外側を環状又は螺旋状のフープ筋で拘束しておく請求項18に記載の杭柱状体の頭部接合方法。 The head joining method for a pile columnar body according to claim 18, wherein the outside of a reinforcing bar group composed of a plurality of reinforcing bars whose upper ends are supported by the fixing plate is restrained by an annular or spiral hoop bar. 前記鉄筋連結プレートと前記鉄筋支持プレートとの間に複数のフープ筋支持柱を設けておき、該フープ筋支持柱に環状又は螺旋状のフープ筋を支持させておく請求項17又は18に記載の杭柱状体の頭部接合方法。

The 17 or 18 according to claim 17 or 18, wherein a plurality of hoop muscle support columns are provided between the reinforcing bar connecting plate and the reinforcing bar support plate, and the hoop muscle support columns support the annular or spiral hoop muscles. Head joining method for pile columns.

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