JP5474733B2 - Joining structure and joining method between foundation and lower part of supporting structure - Google Patents

Joining structure and joining method between foundation and lower part of supporting structure Download PDF

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JP5474733B2
JP5474733B2 JP2010240720A JP2010240720A JP5474733B2 JP 5474733 B2 JP5474733 B2 JP 5474733B2 JP 2010240720 A JP2010240720 A JP 2010240720A JP 2010240720 A JP2010240720 A JP 2010240720A JP 5474733 B2 JP5474733 B2 JP 5474733B2
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foundation
support structure
joint
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joining
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惠治 大村
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Kajima Corp
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本発明は、コンクリート壁を有する基礎と支持構造体下部との接合構造およびこの接合方法に関するものである。   The present invention relates to a joint structure between a foundation having a concrete wall and a lower part of a support structure, and a joining method thereof.

従来、コンクリート壁を有する基礎と支持構造体下部は頂版を介して接合されるように設計されていた。図8は、従来のコンクリート壁を有する基礎と支持構造体下部との接合構造110(以下単に「接合構造110」と称する)を示す図である。接合構造110は、コンクリート壁を有する基礎であるケーソン基礎107と支持構造体101と頂版105等から構成される。橋脚等である支持構造体101は頂版105の上に設けられ、頂版105はケーソン基礎107によって支持される。   Conventionally, a foundation having a concrete wall and a lower part of a support structure are designed to be joined via a top plate. FIG. 8 is a view showing a joint structure 110 (hereinafter simply referred to as “joint structure 110”) between a foundation having a concrete wall and a lower part of a support structure. The joint structure 110 includes a caisson foundation 107 that is a foundation having a concrete wall, a support structure 101, a top plate 105, and the like. A support structure 101 such as a bridge pier is provided on a top plate 105, and the top plate 105 is supported by a caisson foundation 107.

ケーソン基礎107と頂版105の接合は、鉄筋アンカー103によって結合される。つまり、ケーソン基礎の側壁内面を縮径した頂版支持部上に頂版105を設置し、頂版105の側面にはケーソン基礎107の外周側を上方に延伸させたパラペット部を設置し、頂版105の上に支持構造体101を設置する。すなわち頂版105は上端の側面がL字状であるケーソン基礎107によって固定される。また、頂版105とケーソン基礎107には鉄筋アンカー103を介して結合する。支持構造体101と頂板105は、支持構造体主鉄筋下端を頂板105内部に埋設することで固定する。支持構造体101が鋼製の場合は鋼製支持構造体101下端のフランジ部を固定するアンカーボルトの突出端を頂板105内部に埋設することで固定する。   The caisson foundation 107 and the top plate 105 are joined by a reinforcing bar anchor 103. In other words, the top plate 105 is installed on the top plate support part in which the inner surface of the side wall of the caisson foundation is reduced, and the parapet part in which the outer peripheral side of the caisson foundation 107 is extended upward is installed on the side surface of the top plate 105. A support structure 101 is placed on the plate 105. That is, the top plate 105 is fixed by the caisson foundation 107 whose upper side surface is L-shaped. Further, the top plate 105 and the caisson foundation 107 are connected via a reinforcing bar anchor 103. The support structure 101 and the top plate 105 are fixed by embedding the lower end of the support structure main reinforcing bar in the top plate 105. When the support structure 101 is made of steel, it is fixed by embedding the protruding end of the anchor bolt that fixes the flange portion at the lower end of the steel support structure 101 inside the top plate 105.

このような接合構造110のようにケーソン基礎と支持構造体下部とを頂版を介して接合する構造をとる場合、鉛直方向応力は頂版支持部によって、水平方向応力はパラペットによって、曲げモーメントは鉄筋アンカーによってそれぞれ伝達する(例えば特許文献1)。   When the caisson foundation and the lower part of the support structure are joined via the top plate as in the joint structure 110 as described above, the vertical stress is caused by the top plate support portion, the horizontal stress is caused by the parapet, and the bending moment is It transmits by a reinforcing bar anchor (for example, patent documents 1).

特開平8−260484JP-A-8-260484

しかし、従来の接合構造110のようにケーソン基礎と支持構造体下部とを頂版を介して接合する構造を採用する場合、パラペットと頂版支持部とをケーソン基礎の上端に構築する必要がある。また補強のための鉄筋アンカー103を加える必要があり、ケーソン基礎の構造や鉄筋配置の形状は複雑になる。   However, when a structure in which the caisson foundation and the lower part of the support structure are joined via the top plate as in the conventional joining structure 110, it is necessary to construct the parapet and the top plate support at the upper end of the caisson foundation. . Further, it is necessary to add a reinforcing bar anchor 103 for reinforcement, and the structure of the caisson foundation and the shape of the reinforcing bar arrangement become complicated.

また、ケーソン基礎の構造については、図8に示すように、ケーソン基礎107下端の開口部の内径Lfよりケーソン基礎107上端の開口部の内径Leが小さい。これは、施工時に、開口部下端から土砂を搬出する工程において施工効率を下げる原因となっている。   As for the structure of the caisson foundation, as shown in FIG. 8, the inner diameter Le of the opening at the upper end of the caisson foundation 107 is smaller than the inner diameter Lf of the opening at the lower end of the caisson foundation 107. This is a cause of lowering construction efficiency in the process of carrying out earth and sand from the lower end of the opening during construction.

また、頂版105は、単純支持版の状態および固定支持版の状態を考慮して単体で設計されるため、上下面の主鉄筋量が増加する。   Further, since the top plate 105 is designed as a single unit in consideration of the state of the simple support plate and the state of the fixed support plate, the amount of main reinforcing bars on the upper and lower surfaces increases.

本発明は、このような問題に鑑みてなされたもので、作業性に優れ、簡素な構造で構築することができるコンクリート壁を有する基礎と支持構造体下部との接合構造および接合方法を提供することを目的とする。   The present invention has been made in view of such a problem, and provides a joining structure and a joining method between a foundation having a concrete wall and a lower part of a supporting structure that are excellent in workability and can be constructed with a simple structure. For the purpose.

前述した目的を達成するため、第1の発明は、基礎と支持構造体下部との接合構造であって、筒状のコンクリート壁を有する基礎と、前記基礎の上部内面に設けられる継手と、前記継手を介して前記基礎の内面と接合される支持構造体下部と、を具備し、前記継手は、複数の孔が形成された板状部材であり、前記継手の前記孔を含む一部は、前記基礎に埋設されており、前記継手の前記孔を含む他の一部は、前記支持構造体下部に埋設されることを特徴とする基礎と支持構造体下部との接合構造である。   In order to achieve the above-described object, the first invention is a joint structure between a foundation and a lower support structure, and includes a foundation having a cylindrical concrete wall, a joint provided on an upper inner surface of the foundation, A support structure lower part joined to the inner surface of the foundation via a joint, and the joint is a plate-like member in which a plurality of holes are formed, and a part including the holes of the joint The other part including the hole of the joint embedded in the foundation is embedded in the lower part of the support structure, and is a joint structure between the foundation and the lower part of the support structure.

前記継手は、前記板状部材の面方向が前記基礎の軸方向に略垂直であり、前記板状部材の幅方向が前記基礎と前記支持構造体下部とにまたがるように、前記支持構造体下部と前記基礎との間の周方向に所定間隔をあけて複数設けてもよい。   The joint includes a lower part of the support structure such that a surface direction of the plate-like member is substantially perpendicular to an axial direction of the foundation, and a width direction of the plate-like member extends over the foundation and the lower part of the support structure. A plurality may be provided at predetermined intervals in the circumferential direction between the base and the foundation.

前記基礎の断面形状は底部から頂部まで略一定であってもよい。前記基礎および前記支持構造体下部に埋設される部位の前記継手の前記孔には、貫通鉄筋が挿通されてもよい。   The cross-sectional shape of the foundation may be substantially constant from the bottom to the top. A penetrating rebar may be inserted into the hole of the joint at a portion embedded in the foundation and the lower portion of the support structure.

第1の発明によれば、基礎と支持構造体下部は継手を介して接合されるため、基礎を構築する際、パラペットと頂版支持部を設計する必要がない。また、前述した継手部材を介して基礎内面と支持構造体下部が直接接合されるため、水平方向の応力および曲げモーメントは、基礎と支持構造体下部の接触面によって伝達される。   According to the first invention, since the foundation and the lower portion of the support structure are joined via the joint, it is not necessary to design the parapet and the top plate support when constructing the foundation. In addition, since the inner surface of the foundation and the lower part of the support structure are directly joined via the joint member described above, the horizontal stress and bending moment are transmitted by the contact surfaces of the foundation and the lower part of the support structure.

また、継手を、板状部材の面方向が基礎の軸方向に略垂直に、板状部材の幅方向が基礎と前記支持構造体下部とにまたがるように支持構造体下部と基礎との間の周方向に所定間隔をあけて複数設けることによって、より確実に、支持構造体下部から基礎へ鉛直方向の応力を伝達することができる。   Further, the joint is formed between the lower part of the support structure and the foundation so that the surface direction of the plate member is substantially perpendicular to the axial direction of the foundation and the width direction of the plate member extends between the foundation and the lower part of the support structure. By providing a plurality at predetermined intervals in the circumferential direction, the stress in the vertical direction can be more reliably transmitted from the lower part of the support structure to the foundation.

また、基礎の断面形状が底部から頂部まで略一定であることによって、基礎を簡易な構造の配筋で構築することができるとともに、施工工程において土砂を排出する作業の効率が向上する。   In addition, since the cross-sectional shape of the foundation is substantially constant from the bottom to the top, the foundation can be constructed with a simple arrangement of reinforcement, and the efficiency of the work of discharging earth and sand in the construction process is improved.

また、基礎および支持構造体下部に埋設される部位の継手の孔に、貫通鉄筋が挿通されることにより、せん断力の伝達をさらに向上させることができる。   In addition, the transmission of shearing force can be further improved by inserting the penetrating rebar through the hole of the joint embedded in the lower part of the foundation and the support structure.

第2の発明は、基礎と支持構造体下部との接合方法であって、複数の孔が形成された板状部材からなる継手を用い、コンクリート壁を有する基礎の上部内面にあらかじめ前記継手の前記孔を含む一部が埋設され、前記継手の前記孔を含む他の一部が前記基礎の内面側に突出した状態の前記基礎を地中に埋設する工程(a)と、前記基礎の上部の内側に、上部が前記基礎の上端から突出するように支持構造体固定部材を設置する工程(b)と、前記継手と前記支持構造体固定部材の一部を埋設するように、前記基礎の内部にコンクリートを打設する工程(c)と、を具備することを特徴とする基礎と支持構造体下部との接合方法である。   The second invention is a method for joining the foundation and the lower part of the support structure, using a joint made of a plate-like member in which a plurality of holes are formed, and previously connecting the joint to the upper inner surface of the foundation having a concrete wall. A step (a) of embedding the foundation in a state where a part including a hole is embedded and another part including the hole of the joint protrudes toward the inner surface side of the foundation; A step (b) of installing a support structure fixing member so that an upper part protrudes from an upper end of the foundation, and an inside of the foundation so as to embed a part of the joint and the support structure fixing member. And a step (c) of placing concrete on the bottom of the support structure.

前記工程(a)および(b)の最中に、前記継手の孔に貫通鉄筋を設置する工程(d)を加えてもよい。   You may add the process (d) which installs a penetration rebar in the hole of the said joint in the middle of the said process (a) and (b).

第2の発明によれば、基礎と支持構造体下部とを簡素な構造によって確実に接合することができる。基礎は筒状の形状を有し、底部から頂部まで略一定である特徴を有する簡素な構造で設計することができる。したがって、土砂を排出する作業の効率が向上する。継手部材を介して基礎内面と支持構造体下部が直接接合されるため、水平方向の応力および曲げモーメントは、基礎と支持構造体下部の接触面によって伝達することができる。また、継手部材により鉛直方向の応力を伝達することができる。   According to the second invention, the foundation and the lower portion of the support structure can be reliably joined with a simple structure. The foundation has a cylindrical shape and can be designed with a simple structure having a feature that is substantially constant from the bottom to the top. Therefore, the efficiency of the work for discharging earth and sand is improved. Since the inner surface of the foundation and the lower part of the support structure are directly joined via the joint member, the horizontal stress and bending moment can be transmitted by the contact surface between the foundation and the lower part of the support structure. Further, the stress in the vertical direction can be transmitted by the joint member.

また、基礎および支持構造体下部に埋設される部位の継手の孔に、貫通鉄筋が挿通されることにより、せん断力の伝達をさらに向上させることができる。   In addition, the transmission of shearing force can be further improved by inserting the penetrating rebar through the hole of the joint embedded in the lower part of the foundation and the support structure.

本発明によれば、作業性に優れ、簡素な構造で構築することができるコンクリート壁を有する基礎と支持構造体下部との接合構造および接合方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, it is excellent in workability | operativity and can provide the joining structure and joining method of the foundation which has a concrete wall which can be constructed | assembled with a simple structure, and a support structure lower part.

支持構造体が鉄筋コンクリートにより形成される場合の基礎と支持構造体下部の接合構造を示す図であり(a)は全体正面図、(b)は(a)におけるA−A線断面図、(c)は(a)に示すB部分拡大図。It is a figure which shows the joining structure of the foundation and support structure lower part in case a support structure is formed with a reinforced concrete, (a) is a whole front view, (b) is the sectional view on the AA line in (a), (c ) Is an enlarged view of a portion B shown in FIG. 基礎と支持構造体下部との接合構造の施工工程を示す図。The figure which shows the construction process of the joining structure of a foundation and a support structure lower part. 支持構造体が鉄筋コンクリートにより形成される場合の施工工程を示す図。The figure which shows the construction process in case a support structure is formed with a reinforced concrete. 支持構造体が鋼材により形成される場合の基礎と支持構造体下部の接合構造を示す図であり(a)は全体正面図、(b)は(a)におけるC−C線断面図、(c)は(a)に示すD部分拡大図。It is a figure which shows the joining structure of the foundation and support structure lower part in case a support structure is formed with steel materials, (a) is a whole front view, (b) is CC sectional view taken on the line in (a), (c) ) Is a D-part enlarged view shown in (a). 支持構造体が鋼材により形成される場合の施工工程を示す図。The figure which shows the construction process in case a support structure is formed with steel materials. 支持構造体が鉄筋コンクリートにより形成される場合の他の実施形態を示す図で、(a)は図1(a)のA−A線断面図に対応する図、(b)は図1(a)のB部分に対応する拡大図。It is a figure which shows other embodiment in case a support structure is formed with a reinforced concrete, (a) is a figure corresponding to the sectional view on the AA line of Fig.1 (a), (b) is FIG.1 (a). The enlarged view corresponding to B part of. 支持構造体が鋼材により形成される場合の他の実施形態を示す図で、(a)は図4(a)のC−C線断面図に対応する図、(b)は図4(b)のD部分に対応する拡大図。It is a figure which shows other embodiment in case a support structure is formed with steel materials, (a) is a figure corresponding to CC sectional view taken on the line of Fig.4 (a), (b) is FIG.4 (b). The enlarged view corresponding to D part of. 従来のケーソン基礎と支持構造体下部との接合構造。Conventional structure of caisson foundation and lower part of support structure.

以下、本発明の実施の形態にかかるコンクリート壁を有する基礎と支持構造体下部との接合構造について説明する。図1は支持構造体が鉄筋コンクリートにより形成される場合の基礎と支持構造体下部の接合構造2を示す図であり、図1(a)は全体正面図、図1(b)は図1(a)におけるA−A線断面図、図1(c)は図1(a)に示すB部分拡大図である。基礎1と支持構造体下部10の接合構造2は、主に、基礎1と、支持構造体下部10、継手部材9等から構成される。また支持構造体下部10は、支持構造体固定部材である支持構造体主鉄筋及び帯鉄筋3およびコンクリート5により構成される。   Hereinafter, a joint structure between a foundation having a concrete wall and a lower part of a support structure according to an embodiment of the present invention will be described. FIG. 1 is a view showing a joint structure 2 between a foundation and a lower part of a support structure when the support structure is formed of reinforced concrete, FIG. 1 (a) is an overall front view, and FIG. 1 (b) is FIG. ) Is a cross-sectional view taken along the line AA in FIG. 1, and FIG. The joint structure 2 between the foundation 1 and the lower support structure 10 is mainly composed of the foundation 1, the lower support structure 10, the joint member 9, and the like. The lower part 10 of the support structure is composed of a support structure main reinforcing bar, a belt reinforcing bar 3 and concrete 5 which are support structure fixing members.

基礎1は、コンクリート壁を有する筒状の部材である。ここで、筒状とは、円筒形のみならず矩形その他形状の中空体を指すものとする。基礎1の断面形状は、長手方向で略一定である。すなわち、パラペットと頂版支持部等は形成されない。基礎1はケーソン基礎或いは、PCウェル基礎の頂版構造に適用することができる。   The foundation 1 is a cylindrical member having a concrete wall. Here, the term “cylindrical” refers to a hollow body having a rectangular shape or the like as well as a cylindrical shape. The cross-sectional shape of the foundation 1 is substantially constant in the longitudinal direction. That is, the parapet and the top plate support portion are not formed. The foundation 1 can be applied to the top plate structure of the caisson foundation or the PC well foundation.

継手部材9は、板状であり、基礎1の上部内周面とコンクリート5との間に設けられる。なお、継手部材9の詳細は後述する。   The joint member 9 has a plate shape and is provided between the upper inner peripheral surface of the foundation 1 and the concrete 5. Details of the joint member 9 will be described later.

基礎1の上方内部には、支持構造体下部10が継手部材9を介して接合される。支持構造体主鉄筋及び帯鉄筋3は基礎1の内側に設置され、継手部材9とともに、コンクリート5により埋設される。支持構造体主鉄筋及び帯鉄筋3の上端はコンクリート5の上面より突出する。コンクリート5の上面より突出する支持構造体主鉄筋及び帯鉄筋3には、さらに支持構造体本体を構成する支持構造体主鉄筋及び帯鉄筋(図示を省略)を接合することができる。   A support structure lower portion 10 is joined to the upper inside of the foundation 1 via a joint member 9. The supporting structure main reinforcing bar and the belt reinforcing bar 3 are installed inside the foundation 1, and are embedded together with the joint member 9 with the concrete 5. The upper ends of the support structure main reinforcing bar and the belt reinforcing bar 3 protrude from the upper surface of the concrete 5. Support structure main reinforcing bars and band reinforcing bars (not shown) constituting the main body of the supporting structure can be joined to the supporting structure main reinforcing bars and band reinforcing bars 3 protruding from the upper surface of the concrete 5.

支持構造体は、例えば橋脚下部や風力発電タワー下端である。なお、支持構造体の断面は円形に限られず、矩形、八角形や楕円などの形状の場合にも適用できる。支持構造体外径寸法と基礎1の内径の大きさに差がある場合には、基礎1内面形状に合わせて、支持構造体下部10を拡幅すればよい。支持構造体の断面形状と基礎1の断面形状が異なる場合も同様に、支持構造体の断面形状に合わせて支持構造体下部10を拡幅すればよい。   The support structure is, for example, a pier lower part or a wind power generation tower lower end. Note that the cross section of the support structure is not limited to a circular shape, and can be applied to a rectangular shape, an octagonal shape, an elliptical shape, or the like. When there is a difference between the outer diameter size of the support structure and the inner diameter of the foundation 1, the lower part 10 of the support structure may be widened in accordance with the shape of the inner surface of the foundation 1. Similarly, when the cross-sectional shape of the support structure is different from the cross-sectional shape of the foundation 1, the support structure lower portion 10 may be widened in accordance with the cross-sectional shape of the support structure.

図1(b)に示すように、板状である継手部材9は、面方向が基礎1の軸方向に略垂直となるように放射状に配置される。すなわち、継手部材9は支持構造体下部10と基礎1との間の周方向に所定間隔をあけて複数設置される。また、継手部材9の幅方向が基礎1と、支持構造体下部10を構成するコンクリート5とをまたがるように配置される。なお、継手部材9の設置数は図示した例には限られない。   As shown in FIG. 1B, the plate-like joint members 9 are arranged radially so that the surface direction is substantially perpendicular to the axial direction of the foundation 1. That is, a plurality of joint members 9 are installed at a predetermined interval in the circumferential direction between the support structure lower part 10 and the foundation 1. Further, the joint member 9 is arranged so that the width direction thereof extends over the foundation 1 and the concrete 5 constituting the support structure lower part 10. The number of joint members 9 installed is not limited to the illustrated example.

図1(c)に示すように、継手部材9は複数の孔7aおよび複数の孔7bを有する板状の部材である。なお、継手部材9は鋼材等の金属部材である。少なくとも1列の孔7aと少なくとも1列の孔7bが略平行に継手部材9本体に設けられる。なお、継手部材9としては、3列以上の複数の孔を形成してもよく、列ごとに孔の大きさを適宜設定することもできる。   As shown in FIG. 1C, the joint member 9 is a plate-like member having a plurality of holes 7a and a plurality of holes 7b. The joint member 9 is a metal member such as a steel material. At least one row of holes 7a and at least one row of holes 7b are provided in the joint member 9 main body substantially in parallel. The joint member 9 may be formed with a plurality of holes in three or more rows, and the size of the holes can be appropriately set for each row.

孔7bおよび孔7aの内部にはそれぞれコンクリート5および基礎1を構成するコンクリートがまわり込む。したがって、継手部材9がそれぞれのコンクリートの強度に応じた必要な応力伝達を行う。すなわち、基礎1と支持構造体下部10の接触面によって水平方向の応力および曲げモーメントを伝達し、継手部材9により鉛直方向の応力を伝達することができる。なお、継手部材9は孔の大きさやピッチを調節することにより、コンクリート5と基礎1を構成するコンクリートが強度の異なる異種のコンクリートであっても、異種コンクリートの応力伝達が可能となり、コンクリート5と基礎1の接合が可能となる。   Concrete constituting the concrete 5 and the foundation 1 goes around the holes 7b and 7a, respectively. Therefore, the joint member 9 transmits necessary stress according to the strength of each concrete. That is, the stress and bending moment in the horizontal direction can be transmitted by the contact surface between the foundation 1 and the lower part 10 of the support structure, and the stress in the vertical direction can be transmitted by the joint member 9. The joint member 9 can adjust the size and pitch of the holes, so that even if the concrete 5 and the concrete constituting the foundation 1 are different types of concrete having different strengths, stress transmission between the different types of concrete is possible. The foundation 1 can be joined.

次に、支持構造体が鉄筋コンクリートにより形成される場合のコンクリート壁を有する基礎と支持構造体下部とを接合する手順について説明する。図2および図3は基礎1と支持構造体下部10の接合工程を示す図である。   Next, a procedure for joining a foundation having a concrete wall and a lower part of the support structure when the support structure is formed of reinforced concrete will be described. 2 and 3 are views showing a joining process of the foundation 1 and the lower part 10 of the support structure.

まず、図2に示すように基礎1を地中に埋設する。この際、基礎1の上部内面には継手部材9の一部が予め埋設されている。継手部材9には、少なくとも2列の複数の孔が形成されており、基礎1の内面側に少なくとも1列の複数の孔を突出させた状態で、他の少なくとも1列の複数の孔を含む部分が基礎1の上部内面にあらかじめ埋設される。たとえば、図示したように、2列の複数の孔を有する継手部材9を用いた場合には、基礎1に1列の複数の孔が埋設され、基礎1内面には、他の一列の孔が露出する。このような継手部材9は、基礎1の内周面に、周方向に略一定の間隔で複数設けられ、さらに必要に応じて鉛直方向にも複数が設置される(図では鉛直方向に継手部材9が3段設置された例を示す)。   First, the foundation 1 is buried in the ground as shown in FIG. At this time, a part of the joint member 9 is embedded in the upper inner surface of the foundation 1 in advance. The joint member 9 is formed with a plurality of holes in at least two rows, and includes at least one other plurality of holes in a state in which the plurality of holes in at least one row protrude from the inner surface side of the foundation 1. The part is embedded in the upper inner surface of the foundation 1 in advance. For example, as shown in the figure, when the joint member 9 having a plurality of holes in two rows is used, a plurality of holes in one row are embedded in the foundation 1, and another row of holes is embedded in the inner surface of the foundation 1. Exposed. A plurality of such joint members 9 are provided on the inner peripheral surface of the foundation 1 at a substantially constant interval in the circumferential direction, and a plurality of joint members 9 are also installed in the vertical direction as necessary (in the figure, the joint members are arranged in the vertical direction). 9 shows an example in which three stages are installed).

次に、基礎1の内面に型枠11を設置する。型枠11は、後述する支持構造体下部が設置できるように、基礎1の上部から所定の高さ(前述した継手部材9の設置範囲の下方)の位置に設けられて固定される。   Next, the mold 11 is installed on the inner surface of the foundation 1. The formwork 11 is provided and fixed at a predetermined height (below the installation range of the joint member 9 described above) from the upper part of the foundation 1 so that the lower part of the support structure described later can be installed.

次に、図3(a)に示すように、基礎1の上端から一部が突出するように支持構造体主鉄筋及び帯鉄筋3を設置する。支持構造体主鉄筋及び帯鉄筋3を基礎1の内側に挿入した後、型枠11上にコンクリート5を打設する。すなわち、支持構造体主鉄筋及び帯鉄筋3の一部および継手部材9がコンクリート5により埋設され、支持構造体下部10が形成される。   Next, as shown to Fig.3 (a), the support structure main reinforcement and the strip reinforcement 3 are installed so that a part may protrude from the upper end of the foundation 1. FIG. After inserting the supporting structure main reinforcing bar and the belt reinforcing bar 3 inside the foundation 1, the concrete 5 is placed on the formwork 11. That is, a part of the supporting structure main reinforcing bar and the band reinforcing bar 3 and the joint member 9 are embedded by the concrete 5 to form the supporting structure lower part 10.

なお、図3(b)に示すように、基礎1の長さが短いときは、基礎1の内側に、貧配合コンクリート13を打設することにより型枠11を省略することが可能である。また、貧配合コンクリートに替えて、発泡モルタルや流動化処理土流動化処理土を使用することも可能である。この場合は、支持構造体主鉄筋及び帯鉄筋3を、貧配合コンクリート等の上部に設置し、その後コンクリート5を打設すればよい。   In addition, as shown in FIG.3 (b), when the length of the foundation 1 is short, it is possible to abbreviate | omit the formwork 11 by placing the poor mixing concrete 13 inside the foundation 1. FIG. Moreover, it is also possible to use foamed mortar and fluidized soil fluidized soil instead of poor blended concrete. In this case, the supporting structure main reinforcing bar and the belt reinforcing bar 3 may be installed on the upper part of poor blended concrete or the like, and then the concrete 5 may be placed.

なお、コンクリート5上に露出する支持構造体主鉄筋及び帯鉄筋3と支持構造体本体を構成する鉄筋等(図示を省略)とは、例えば、継手または溶接によって結合することができる。支持構造体主鉄筋及び帯鉄筋3と支持構造体本体を構成する鉄筋等との接合後、コンクリート6を打設することで支持構造体本体を構築することができる。   In addition, the supporting structure main reinforcing bar and the strip reinforcing bar 3 exposed on the concrete 5 and the reinforcing bars and the like (not shown) constituting the supporting structure main body can be coupled by, for example, a joint or welding. The support structure main body can be constructed by placing concrete 6 after joining the support structure main reinforcing bar and the rebar 3 and the reinforcing bars constituting the support structure main body.

このように、本発明の実施の形態にかかる接合構造2によれば、簡易な構造である基礎1と支持構造体下部10との接合構造を構成することができる。また、基礎1と支持構造体下部10とを継手部材9によって確実に接合することができる。すなわち、鉛直方向の応力は継手部材9によって確実に基礎1に伝達され、水平方向の応力と曲げモーメントは基礎1とコンクリート5の接触面によって、確実に基礎1に伝達される。また、基礎1を拡張してパラペットや頂板支持部を構築する必要がないため、作業性に優れる。   Thus, according to the joining structure 2 according to the embodiment of the present invention, a joining structure between the foundation 1 and the support structure lower part 10 which is a simple structure can be configured. Further, the foundation 1 and the support structure lower portion 10 can be reliably joined by the joint member 9. That is, the stress in the vertical direction is reliably transmitted to the foundation 1 by the joint member 9, and the stress and the bending moment in the horizontal direction are reliably transmitted to the foundation 1 by the contact surface between the foundation 1 and the concrete 5. Moreover, since it is not necessary to expand the foundation 1 and to construct a parapet or a top plate support part, it is excellent in workability.

また、基礎1がケーソン基礎である場合、基礎1が簡素な構造であることから、オープンケーソン工法やニューマチックケーソン工法等、各種ケーソン構築方法に適用することができる。また、基礎1はPCウェル基礎の頂板構造等、ケーソン基礎以外のコンクリート構造体であってもよい。   Further, when the foundation 1 is a caisson foundation, since the foundation 1 has a simple structure, it can be applied to various caisson construction methods such as an open caisson method and a pneumatic caisson method. The foundation 1 may be a concrete structure other than the caisson foundation, such as a top plate structure of a PC well foundation.

次に、本発明の第2の実施の形態にかかる支持構造体が鋼材等の金属部材により形成される場合のコンクリート壁を有する基礎と支持構造体下部との接合構造について説明する。図4は支持構造体が鋼材等の金属部材により形成される場合の基礎と支持構造体下部の接合構造20を示す図であり、図4(a)は全体正面図、図4(b)は図4(a)におけるC−C線断面図、図4(c)は図4(a)に示すD部分拡大図である。なお、以下の実施形態において、接続構造2と同一の機能を奏する構成については、図1〜図3と同一の符号を付し、重複する説明を省略する。   Next, a joint structure between a foundation having a concrete wall and a lower part of the support structure when the support structure according to the second embodiment of the present invention is formed of a metal member such as steel will be described. FIG. 4 is a view showing a base structure and a joining structure 20 at the bottom of the support structure when the support structure is formed of a metal member such as a steel material. FIG. 4 (a) is an overall front view, and FIG. FIG. 4A is a sectional view taken along the line CC in FIG. 4A, and FIG. 4C is an enlarged view of a portion D shown in FIG. In the following embodiments, the same reference numerals as those in FIGS. 1 to 3 are given to configurations having the same functions as those of the connection structure 2, and redundant descriptions are omitted.

基礎と支持構造体下部との接合構造20は、主に、基礎1、支持構造体下部26、継手部材9等から構成される。支持構造体下部26は支持構造体固定部材を構成するアンカーフレーム23a、23bおよびアンカーボルト25と、コンクリート21とにより構成される。なお、以下の説明において、アンカーフレーム23a、23bおよびアンカーボルト25を総称してアンカー部材と称する。   The joint structure 20 between the foundation and the lower part of the support structure mainly includes the foundation 1, the lower part of the support structure 26, the joint member 9, and the like. The support structure lower portion 26 is composed of anchor frames 23 a and 23 b and anchor bolts 25 that constitute a support structure fixing member, and concrete 21. In the following description, the anchor frames 23a and 23b and the anchor bolt 25 are collectively referred to as an anchor member.

アンカーフレーム23a、23bは略矩形の鋼製中空部材である。アンカーボルト25は棒状の鋼製部材である。下方のアンカーフレーム23bの四隅近傍にアンカーボルト25がネジ等で接合される。同様に上方のアンカーフレーム23aの四隅にアンカーボルト25が来るように配置され、ネジ等で接合される。アンカーボルトは支持構造体下端に伝達される曲げモーメントに応じて多数配置してもよい。なお、アンカー部材としては、上記態様に限られない。   The anchor frames 23a and 23b are substantially rectangular steel hollow members. The anchor bolt 25 is a rod-shaped steel member. Anchor bolts 25 are joined by screws or the like in the vicinity of the four corners of the lower anchor frame 23b. Similarly, the anchor bolts 25 are arranged at the four corners of the upper anchor frame 23a, and are joined by screws or the like. Many anchor bolts may be arranged according to the bending moment transmitted to the lower end of the support structure. In addition, as an anchor member, it is not restricted to the said aspect.

基礎1の上方内部には支持構造体下部26が継手部材9を介して接合される。アンカー部材は基礎1の内側に設置され、継手部材9とともにコンクリート21によって埋設される。この際、アンカーフレーム23aは、コンクリート21の上面に露出する。コンクリート21の上面より露出するアンカー部材には、さらに鋼製支持構造体19を接合することができる。   A support structure lower portion 26 is joined to the upper inside of the foundation 1 through a joint member 9. The anchor member is installed on the inner side of the foundation 1 and embedded with the concrete 21 together with the joint member 9. At this time, the anchor frame 23 a is exposed on the upper surface of the concrete 21. A steel support structure 19 can be further joined to the anchor member exposed from the upper surface of the concrete 21.

支持構造体は、例えば橋脚下部や風力発電タワー下端である。なお、支持構造体の断面は円形に限られず、矩形、八角形や楕円などの形状の場合にも適用できる。支持構造体外形寸法と基礎1内径の大きさに差がある場合には、基礎1内面形状に合わせて、支持構造体下部26を拡幅する。支持構造体の断面形状と基礎1の断面形状が異なる場合も同様に、支持構造体の断面形状に合わせて支持構造体下部10を拡幅すればよい。   The support structure is, for example, a pier lower part or a wind power generation tower lower end. Note that the cross section of the support structure is not limited to a circular shape, and can be applied to a rectangular shape, an octagonal shape, an elliptical shape, or the like. When there is a difference between the outer dimensions of the support structure and the inner diameter of the foundation 1, the support structure lower portion 26 is widened in accordance with the shape of the inner surface of the foundation 1. Similarly, when the cross-sectional shape of the support structure is different from the cross-sectional shape of the foundation 1, the support structure lower portion 10 may be widened in accordance with the cross-sectional shape of the support structure.

図4(b)に示すように、継手部材9は、継手部材9の幅方向が基礎1と、支持構造体下部を構成するコンクリート21とにまたがるように配置される。なお、継手部材9の設置形態については、前述した接合構造2と同様である。   As shown in FIG. 4B, the joint member 9 is arranged so that the width direction of the joint member 9 extends over the foundation 1 and the concrete 21 constituting the lower part of the support structure. In addition, about the installation form of the coupling member 9, it is the same as that of the junction structure 2 mentioned above.

また、図4(c)に示すように、少なくとも1列の孔7aと少なくとも1列の孔7bが略平行に継手部材9本体に設けられ、基礎1およびコンクリート21にそれぞれ埋設される。   Further, as shown in FIG. 4C, at least one row of holes 7a and at least one row of holes 7b are provided in the joint member 9 main body substantially in parallel, and are embedded in the foundation 1 and the concrete 21, respectively.

孔7bおよび孔7aの内部にはそれぞれコンクリート21および基礎1を構成するコンクリートがまわり込む。したがって、継手部材9がそれぞれのコンクリートの強度に応じた必要な応力伝達を行うことができる。すなわち、基礎1と支持構造体下部26の接触面によって水平方向の応力および曲げモーメントを伝達し、継手部材9により鉛直方向の応力を伝達することができる。   Concrete constituting the concrete 21 and the foundation 1 goes around inside the holes 7b and 7a, respectively. Therefore, the joint member 9 can perform necessary stress transmission according to the strength of each concrete. That is, the stress and the bending moment in the horizontal direction can be transmitted by the contact surface between the foundation 1 and the lower support structure 26, and the stress in the vertical direction can be transmitted by the joint member 9.

次に、支持構造体が鋼材等の金属部材により形成される場合のコンクリート壁を有する基礎と支持構造体下部とを接合する手順について説明する。図5は基礎1と支持構造体下部26の接合工程を示す図である。   Next, a procedure for joining a foundation having a concrete wall and a lower part of the support structure when the support structure is formed of a metal member such as a steel material will be described. FIG. 5 is a view showing a joining process between the foundation 1 and the lower support structure 26.

まず、図2に示す方法と同様に、基礎1を地中に埋設する。この際、基礎1の上部内面には継手部材9の一部が予め埋設されている。継手部材9には、少なくとも2列の複数の孔が形成されており、基礎1の内面側に少なくとも1列の複数の孔を突出させた状態で、他の少なくとも1列の複数の孔を含む部分が基礎1の上部内面にあらかじめ埋設される。   First, similarly to the method shown in FIG. 2, the foundation 1 is buried in the ground. At this time, a part of the joint member 9 is embedded in the upper inner surface of the foundation 1 in advance. The joint member 9 is formed with a plurality of holes in at least two rows, and includes at least one other plurality of holes in a state in which the plurality of holes in at least one row protrude from the inner surface side of the foundation 1. The part is embedded in the upper inner surface of the foundation 1 in advance.

次に、基礎1の内面に型枠18を設置する。型枠18は、後述する支持構造体下部が設置できるように、基礎1の上部から所定の高さ(前述した継手部材9の設置範囲の下方)の位置に設けられて固定される。   Next, the formwork 18 is installed on the inner surface of the foundation 1. The formwork 18 is provided and fixed at a predetermined height (below the installation range of the joint member 9 described above) from the upper part of the foundation 1 so that the lower part of the support structure described later can be installed.

次に、図5(a)に示すように、基礎1の上端から露出するようにアンカー部材を設置する。アンカー部材を基礎1の内側に挿入した後、型枠18上にコンクリート21を打設する。すなわち、アンカー部材の一部(アンカーフレーム23bおよびアンカーボルト25の下部)および継手部材9が埋設される。   Next, as shown in FIG. 5A, the anchor member is installed so as to be exposed from the upper end of the foundation 1. After the anchor member is inserted inside the foundation 1, concrete 21 is placed on the mold 18. That is, part of the anchor member (below the anchor frame 23b and the anchor bolt 25) and the joint member 9 are embedded.

なお、図5(b)に示すように、基礎1の長さが短いときは、基礎1の内側に、貧配合コンクリート28を打設することにより型枠18を省略することが可能である。また、貧配合コンクリートに替えて発泡モルタルや流動化処理土を使用することも可能である。アンカー部材は貧配合コンクリート等の上部に設置し、その後コンクリート21を打設すればよい。   In addition, as shown in FIG.5 (b), when the length of the foundation 1 is short, it is possible to abbreviate | omit the formwork 18 by placing the poor mixing | blending concrete 28 inside the foundation 1. FIG. It is also possible to use foamed mortar or fluidized soil instead of poor blended concrete. The anchor member may be installed on the top of poor blended concrete or the like, and then concrete 21 may be cast.

なお、コンクリート21上に露出するアンカー部材と鋼製支持構造体19とは、例えば溶接によって結合することができる。   The anchor member exposed on the concrete 21 and the steel support structure 19 can be joined together by welding, for example.

このように、第2の実施の形態にかかる接合構造20によれば、簡素な構造で基礎1と支持構造体下部26を継手部材9によって接合することができる。この際、鉛直方向の応力は継手部材9によって基礎1に伝達され、水平方向の応力および曲げモーメントは基礎1とコンクリート21の接触面によって基礎1に確実に伝達される。また、アンカー部材の基礎1上端から露出している部分と鋼製支持構造体とを接合することができる。また、基礎1を拡張してパラペットや頂板支持部を構築する必要がないため、作業性に優れる。   Thus, according to the joining structure 20 according to the second embodiment, the base 1 and the support structure lower portion 26 can be joined by the joint member 9 with a simple structure. At this time, the stress in the vertical direction is transmitted to the foundation 1 by the joint member 9, and the stress and bending moment in the horizontal direction are reliably transmitted to the foundation 1 by the contact surface between the foundation 1 and the concrete 21. Moreover, the part exposed from the base 1 upper end of the anchor member and the steel support structure can be joined. Moreover, since it is not necessary to expand the foundation 1 and to construct a parapet or a top plate support part, it is excellent in workability.

また、基礎1がケーソン基礎である場合、基礎1が簡素な構造であることから、オープンケーソン工法やニューマチックケーソン工法等、各種ケーソン構築方法に適用することができる。また、基礎1はPCウェル基礎の頂板構造等、ケーソン基礎以外のコンクリート構造体であってもよい。   Further, when the foundation 1 is a caisson foundation, since the foundation 1 has a simple structure, it can be applied to various caisson construction methods such as an open caisson method and a pneumatic caisson method. The foundation 1 may be a concrete structure other than the caisson foundation, such as a top plate structure of a PC well foundation.

次に、他の実施形態について説明する。以下の実施形態において、図1等に示す構成と同一の機能を奏する構成については、図1と同一の符号を付し、重複した説明を省略する。   Next, another embodiment will be described. In the following embodiments, configurations having the same functions as those shown in FIG. 1 and the like are denoted by the same reference numerals as those in FIG.

図6は、支持構造体が鉄筋コンクリートにより形成される場合の他の実施形態を示す図で、図6(a)は図1(a)のA−A線に対応する部位の断面図、図6(b)は同じく図1(a)のB部分に対応する拡大図を示す。   FIG. 6 is a view showing another embodiment in which the support structure is formed of reinforced concrete. FIG. 6 (a) is a cross-sectional view of a portion corresponding to the line AA in FIG. 1 (a). (B) shows the enlarged view corresponding to B part of Drawing 1 (a) similarly.

本実施形態では、図6(a)、図6(b)に示すように、継手部材9の孔7bに貫通鉄筋31が挿通される。同様に、継手部材9の孔7aには貫通鉄筋32が挿通される。貫通鉄筋31および貫通鉄筋32は、略リング状であり、周方向に設けられる。貫通鉄筋31および貫通鉄筋32は、例えば、基礎1が地中に埋設された後に挿通すればよい。なお、貫通鉄筋31および貫通鉄筋32は全てつながっていなくてもよく、継手部材9に短鉄筋を貫通させてもよい。貫通鉄筋31および貫通鉄筋32を用いて基礎1と支持構造体下部との接合を補強することにより、せん断力の伝達をさらに向上させることができる。   In the present embodiment, as shown in FIGS. 6A and 6B, the penetration reinforcing bar 31 is inserted into the hole 7 b of the joint member 9. Similarly, the penetrating rebar 32 is inserted into the hole 7 a of the joint member 9. The penetration reinforcing bar 31 and the penetration reinforcing bar 32 are substantially ring-shaped, and are provided in the circumferential direction. The penetration reinforcing bar 31 and the penetration reinforcing bar 32 may be inserted after the foundation 1 is buried in the ground, for example. Note that the penetrating rebar 31 and the penetrating rebar 32 do not have to be connected all together, and the short rebar may be penetrated through the joint member 9. By reinforcing the joint between the foundation 1 and the lower portion of the support structure using the penetrating rebar 31 and the penetrating rebar 32, the transmission of shearing force can be further improved.

図7は、支持構造体が鋼材により形成される場合の他の実施形態を示す図で、図7(a)は図4(a)のC−C線に対応する部位の断面図、図7(b)は同じく図4(a)のD部分に対応する拡大図を示す。   FIG. 7 is a view showing another embodiment in which the support structure is formed of a steel material. FIG. 7 (a) is a cross-sectional view of a portion corresponding to line CC in FIG. 4 (a). FIG. 4B is an enlarged view corresponding to the portion D in FIG.

図7(a)、図7(b)に示すように、この場合でも、継手部材9の孔7bに貫通鉄筋35を、孔7aに貫通鉄筋36を挿通させればよい。なお、貫通鉄筋35および貫通鉄筋36は前述した貫通鉄筋31と同様の構成である。貫通鉄筋35および貫通鉄筋36を用いることで、基礎1と支持構造体下部との接合を補強することにより、せん断力の伝達をさらに向上させることができる。   As shown in FIGS. 7A and 7B, in this case, the penetration rebar 35 may be inserted into the hole 7b of the joint member 9 and the penetration rebar 36 may be inserted into the hole 7a. The penetrating rebar 35 and the penetrating rebar 36 have the same configuration as the penetrating rebar 31 described above. By using the penetration reinforcing bar 35 and the penetration reinforcing bar 36, the transmission of the shearing force can be further improved by reinforcing the joint between the foundation 1 and the lower part of the support structure.

以上添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。   Although the embodiments of the present invention have been described with reference to the accompanying drawings, the technical scope of the present invention is not affected by the above-described embodiments. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

例えば、各実施形態は互いに組み合わせることができることはもちろんのこと、各構成の形状や設置範囲、設置個数等は、適宜設定することができる。   For example, the embodiments can be combined with each other, and the shape, installation range, installation number, and the like of each component can be set as appropriate.

1、
1a、1b………基礎
2………接合構造
3………支持構造体主鉄筋及び帯鉄筋
5………コンクリート
6………コンクリート
7a、7b………孔
9………継手部材
10………支持構造体下部
11………型枠
13………貧配合コンクリート
18………型枠
19………鋼製支持構造体
20………接合構造
21………コンクリート
23a、23b………アンカーフレーム
25………アンカーボルト
26………支持構造体下部
28………貧配合コンクリート
31、32、35、36………貫通鉄筋
101………支持構造体
103………鉄筋アンカー
105………頂版
107………ケーソン基礎
110………接合構造
1,
1a, 1b ......... Foundation 2 ......... Joint structure 3 ......... Support structure main reinforcement and strip reinforcement 5 ......... Concrete 6 ......... Concrete 7a, 7b ......... Hole 9 ......... Joint member 10 ... ...... Support structure lower part 11 ......... Formwork 13 ......... Poor blended concrete 18 ......... Formwork 19 ......... Steel support structure 20 ......... Joint structure 21 ......... Concrete 23a, 23b …… ... Anchor frame 25 ... Anchor bolt 26 ... Lower support structure 28 ... Poorly mixed concrete 31, 32, 35, 36 ... ... Reinforcing bar 101 ... Support structure 103 ... Reinforcing bar anchor 105 ……… Top plate 107 ……… Caisson foundation 110 ……… Joint structure

Claims (6)

基礎と支持構造体下部との接合構造であって、
筒状のコンクリート壁を有する基礎と、
前記基礎の上部内面に設けられる継手と、
前記継手を介して前記基礎の内面と接合される支持構造体下部と、
を具備し、
前記継手は、複数の孔が形成された板状部材であり、
前記継手の前記孔を含む一部は、前記基礎に埋設されており、
前記継手の前記孔を含む他の一部は、前記支持構造体下部に埋設されることを特徴とする基礎と支持構造体下部との接合構造。
It is a joint structure between the foundation and the lower part of the support structure,
A foundation having a cylindrical concrete wall;
A joint provided on the upper inner surface of the foundation;
A lower support structure joined to the inner surface of the foundation via the joint;
Comprising
The joint is a plate-like member in which a plurality of holes are formed,
A part including the hole of the joint is embedded in the foundation,
The other part including the hole of the joint is embedded in the lower part of the support structure, and the joint structure between the foundation and the lower part of the support structure.
前記継手は、前記板状部材の面方向が前記基礎の軸方向に略垂直であり、前記板状部材の幅方向が前記基礎と前記支持構造体下部とにまたがるように、前記支持構造体下部と前記基礎との間の周方向に所定間隔をあけて複数設けられることを特徴とする請求項1記載の基礎と支持構造体下部との接合構造。   The joint includes a lower part of the support structure such that a surface direction of the plate-like member is substantially perpendicular to an axial direction of the foundation, and a width direction of the plate-like member extends over the foundation and the lower part of the support structure. The joint structure of the foundation and the lower part of a support structure according to claim 1, wherein a plurality of gaps are provided at predetermined intervals in a circumferential direction between the foundation and the foundation. 前記基礎の断面形状が底部から頂部まで略一定であることを特徴とする請求項1または請求項2に記載の基礎と支持構造体下部との接合構造。   The joint structure between the foundation and the lower portion of the support structure according to claim 1 or 2, wherein a cross-sectional shape of the foundation is substantially constant from a bottom portion to a top portion. 前記基礎および前記支持構造体下部に埋設される部位の前記継手の前記孔には、貫通鉄筋が挿通されることを特徴とすることを特徴とする請求項1から請求項3のいずれかに記載の基礎と支持構造体下部との接合構造。   The penetration reinforcing bar is penetrated in the hole of the joint of the portion embedded in the foundation and the lower part of the support structure, The penetration reinforcing bar according to any one of claims 1 to 3 characterized by things. Connection structure between the foundation and the lower part of the support structure. 基礎と支持構造体下部との接合方法であって、
複数の孔が形成された板状部材からなる継手を用い、
コンクリート壁を有する基礎の上部内面にあらかじめ前記継手の前記孔を含む一部が埋設され、前記継手の前記孔を含む他の一部が前記基礎の内面側に突出した状態の前記基礎を地中に埋設する工程(a)と、
前記基礎の上部の内側に、上部が前記基礎の上端から突出するように支持構造体固定部材を設置する工程(b)と、
前記継手と前記支持構造体固定部材の一部を埋設するように、前記基礎の内部にコンクリートを打設する工程(c)と、
を具備することを特徴とする基礎と支持構造体下部との接合方法。
A method of joining the foundation and the lower part of the support structure,
Using a joint consisting of a plate-like member in which a plurality of holes are formed,
A portion including the hole of the joint is embedded in advance in the upper inner surface of the foundation having a concrete wall, and the other portion including the hole of the joint projects into the inner surface side of the foundation. Embedded in (a),
A step (b) of installing a support structure fixing member inside the upper part of the foundation such that the upper part protrudes from the upper end of the foundation;
(C) placing concrete in the foundation so as to embed a part of the joint and the support structure fixing member;
A method of joining the foundation and the lower part of the support structure characterized by comprising:
前記工程(a)および(b)の最中に、前記継手の孔に貫通鉄筋を設置する工程(d)をさらに具備することを特徴とする請求項5記載の基礎と支持構造体下部との接合方法。   6. The foundation and the lower part of the support structure according to claim 5, further comprising a step (d) of installing a penetration rebar in the hole of the joint during the steps (a) and (b). Joining method.
JP2010240720A 2010-10-27 2010-10-27 Joining structure and joining method between foundation and lower part of supporting structure Expired - Fee Related JP5474733B2 (en)

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