JP2009209557A - Joint structure - Google Patents

Joint structure Download PDF

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JP2009209557A
JP2009209557A JP2008052308A JP2008052308A JP2009209557A JP 2009209557 A JP2009209557 A JP 2009209557A JP 2008052308 A JP2008052308 A JP 2008052308A JP 2008052308 A JP2008052308 A JP 2008052308A JP 2009209557 A JP2009209557 A JP 2009209557A
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support shaft
plate
bolt
diameter plate
diameter
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JP5054576B2 (en
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Takao Koyama
高夫 小山
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Asahi Kasei Homes Corp
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Asahi Kasei Homes Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure which enables the easy adjustment of an installation error of an element member, caused by an installation error in the construction of a supporting member, and which enables the element member to be easily connected to the supporting member in a dimensionally accurate manner. <P>SOLUTION: This joint structure 7 for connecting a foundation beam 5 and a steel pipe pile 3 together comprises: a spherical support head bolt 11 which is supported on a pile head cap 19; a positional adjustment portion 21 for fixing a head portion 11c as one end of the spherical support head bolt 11 to the pile head cap 19; and a foundation beam fixing plate 9 for connecting the other end of the spherical support head bolt 11 and the foundation beam 5 together. The positional adjustment portion 21 has an insertion hole Ha through which the other end of the spherical support head bolt 11 is inserted, and the insertion hole Ha has a hole diameter which makes the spherical support head bolt 11 swingable. Thus, the spherical support head bolt 11 is adjusted while being tilted in the insertion holes Ha, so that an inclination error in the installed state of the foundation beam 5 can be easily adjusted and so that the foundation beam 5 can be easily connected to the steel pipe pile 3 in a dimensionally-accurate manner. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、建築物を構成する基礎梁などの要素部材と要素部材を支持する基礎杭などの支持部材とを接合する接合構造に関する。   The present invention relates to a joining structure that joins an element member such as a foundation beam constituting a building and a support member such as a foundation pile that supports the element member.

従来より、建物の基礎として現場打ちコンクリートで形成する基礎梁に替えて、鉄骨製基礎梁を用いた基礎(鉄骨梁基礎)が検討されている。鉄骨梁基礎は、地盤に接地する部分であるベース部にコンクリートを打設し、基礎梁を形成する立ち上がり部に断面H型鋼を使用するものが考えれらている。このようなコンクリートスラブとH形鋼梁を組み合わせた基礎構造では、コンクリートの影響による発錆を防止して耐久性の向上を図る工夫が必要である(特許文献1参照)。   Conventionally, a foundation using a steel foundation beam (steel beam foundation) has been studied in place of the foundation beam formed of cast-in-place concrete as the foundation of a building. As for the steel beam foundation, it is conceivable that concrete is cast on a base portion that is a portion that comes into contact with the ground, and an H-section steel is used for a rising portion that forms the foundation beam. In such a basic structure combining a concrete slab and an H-shaped steel beam, it is necessary to devise a technique for preventing rusting due to the influence of concrete and improving durability (see Patent Document 1).


一方で、鉄骨梁基礎を直接基礎ではなく、杭基礎とする場合は、鋼管杭と鉄骨基礎梁の間にコンクリートベースを介在させず直接に鋼管杭と鉄骨製基礎梁を固定することが考えられる。これにより現場コンクリート工事を省略したいわゆる乾式工法とすることができるので好適である。
特開2003−268782号公報

On the other hand, when the steel beam foundation is not a direct foundation but a pile foundation, it is possible to fix the steel pipe pile and the steel foundation beam directly without interposing a concrete base between the steel pipe pile and the steel foundation beam. . As a result, a so-called dry construction method in which on-site concrete work is omitted is preferable.
Japanese Patent Laid-Open No. 2003-268782

ところで、上記の鉄骨製基礎梁などの建築物の要素部材を鋼管杭などの支持部材で支持する際の施工上の設置誤差は、基礎梁と杭頭を現場打ちコンクリートベースで互いに連結固定する場合には、コンクリートは杭頭の設置状態に応じた形状で固まるので、杭頭の施工上の設置誤差に影響を受けずに基礎梁の位置調整が可能であり、前記誤差に対する許容範囲は、鉄骨部品の接合に比して、広く(大きく)設定することができると言える。   By the way, the installation error in construction when supporting the building element such as the steel frame foundation beam with the support member such as the steel pipe pile is the case where the foundation beam and the pile head are connected and fixed to each other with the cast-in-place concrete base. The concrete is solidified in a shape according to the installation state of the pile head, so the position of the foundation beam can be adjusted without being affected by the installation error in the construction of the pile head. It can be said that it can be set wider (larger) than the joining of parts.

しかしながら、上記乾式工法を採用し、鋼製等で製作した連結部品同士を使用して鉄骨製基礎梁などの建築物の要素部材と鋼管杭などの支持部材を接合する場合には、前記誤差の値の許容範囲も狭く(小さく)設定され、、施工の位置等の精度は高いものが要求される。すなわち支持部材である杭の配置や杭頭の高さの「ズレ」方や杭の転倒の状態が、その杭の直上に接続される要素部材である基礎梁の設置位置や、基礎天端の高さ、及び傾きの精度にそのまま影響して基礎梁の設置誤差を生じさせ、前記誤差が許容範囲を超える場合は、基礎天端面(土台面)の水平面が確保されず、その基礎天端面(土台面)の上に構築される建物の柱の鉛直性や床面等の水平性が確保されないことにつながってしまう。   However, when the above dry-type construction method is used, and connecting parts made of steel or the like are used to join building element members such as steel foundation beams and support members such as steel pipe piles, the error The allowable range of values is also set to be narrow (small), and high accuracy such as construction position is required. In other words, the placement of the piles that are the support members, the “displacement” of the pile head height, and the state of the piles falling over are the position of the foundation beam that is the element member connected directly above the pile, If the error exceeds the tolerance, the horizontal surface of the foundation top end surface (base surface) is not secured and the foundation top end surface ( This leads to the fact that the verticality of the pillars of the building constructed on the foundation surface) and the horizontality of the floor surface, etc. cannot be secured.

本発明は、以上の問題を解決することを課題としており、その課題は、支持部材の施工上の設置誤差によって生じる要素部材の設置誤差を簡単に調整することができ、寸法精度良く要素部材を支持部材に容易に接続することができる接合構造を提供することを目的とする。   This invention makes it a subject to solve the above problem, The subject can adjust easily the installation error of the element member produced by the installation error on the construction of a support member, and an element member can be adjusted with sufficient dimensional accuracy. It is an object of the present invention to provide a joint structure that can be easily connected to a support member.

本発明は、建築物を構成する要素部材と、要素部材を支える支持部材とを接続する接合構造において、支持部材に固定される台座部と、一方の端部に支承端が形成され、その支承端が台座部に支承される支持軸部と、支持軸部の一方の端部を台座部に固定する固定手段と、支持軸部の他方の端部と要素部材とを連結する要素受け部と、を備え、支持軸部の一方の端部には、径方向に張り出した張出し部が形成され、固定手段は、支持軸部の他方の端部が挿通する挿通孔と張出し部に当接して支持軸部を係止する支持軸抜け止め部とを有し、挿通孔は、支承端を支点にして支持軸部が揺動自在の孔径を有し、支承端には、台座部に当接する凸面が形成されていることを特徴とする。   The present invention relates to a joining structure for connecting an element member constituting a building and a support member supporting the element member, a pedestal portion fixed to the support member, and a support end formed at one end thereof. A support shaft portion whose end is supported by the pedestal portion, a fixing means for fixing one end portion of the support shaft portion to the pedestal portion, and an element receiving portion for connecting the other end portion of the support shaft portion and the element member; The support shaft portion is formed with an overhang portion that projects in the radial direction, and the fixing means is in contact with the insertion hole and the overhang portion through which the other end portion of the support shaft portion is inserted. A support shaft retaining portion for locking the support shaft portion, and the insertion hole has a hole diameter that allows the support shaft portion to swing with the support end as a fulcrum, and the support end abuts the pedestal portion. A convex surface is formed.

本発明において、台座部は支持部材に固定されており、支持軸部の一方の端部には、台座部に支承される支承端が形成されている。その支持軸部の一方の端部は、固定手段によって台座部に固定され、他方の端部は、要素受け部によって要素部材に連結される。支持軸部は、他方の端部から固定手段の挿通孔に通され、一方の端部に形成された張出し部が、固定手段の支持軸抜け止め部に係止されて支持軸部が固定手段から引き抜かれることが防止される。支持軸部の支承端には、台座部に当接する凸面が形成されている。挿通孔は、支承端を支点にして支持軸部が揺動自在の孔径を有するため、支持軸部は、支承端の凸面を支点にして挿通孔内を揺動できる。その結果として、支持軸部を挿通孔内で傾けながら調整することで、支持部材に接続される要素部材の設置状態の傾きの誤差を簡単に調整でき、寸法精度よく要素部材を支持部材に容易に接続することができる。   In the present invention, the pedestal portion is fixed to the support member, and a support end supported by the pedestal portion is formed at one end of the support shaft portion. One end portion of the support shaft portion is fixed to the pedestal portion by the fixing means, and the other end portion is connected to the element member by the element receiving portion. The support shaft portion is passed through the insertion hole of the fixing means from the other end portion, the overhang portion formed at one end portion is locked to the support shaft retaining portion of the fixing means, and the support shaft portion is fixed means It is prevented from being pulled out from. A convex surface that comes into contact with the pedestal portion is formed at the support end of the support shaft portion. Since the insertion hole has a hole diameter that allows the support shaft portion to swing with the support end as a fulcrum, the support shaft portion can swing within the insertion hole with the convex surface of the support end as a fulcrum. As a result, by adjusting the support shaft while tilting it in the insertion hole, it is possible to easily adjust the tilt error of the installation state of the element member connected to the support member, and the element member can be easily attached to the support member with dimensional accuracy. Can be connected to.

さらに、固定手段は、挿通孔及び支持軸抜け止め部が形成された円形の小径プレートと、小径プレートが回転自在に装着される円形の第1装着孔が形成された円形の大径プレートと、大径プレートが回転自在に装着される円形の第2装着孔が形成された固定プレートと、を有し、固定手段は、台座部に一方の端部が支承される支持軸部の他方の端部側が小径プレートの挿通孔、大径プレートの第1装着孔、及び固定プレートの第2装着孔を貫通し、小径プレートの挿通孔に大径プレートが装着され、大径プレートの第1装着孔に固定プレートが装着され、固定プレートは台座部に固定され、大径プレートには、小径プレートの周縁に当接して小径プレートを係止する小径プレート抜け止め部が設けられ、固定プレートには、大径プレートの周縁に当接して大径プレートを係止する大径プレート抜け止め部が設けられ、支持軸部の軸芯と一致する挿通孔の中心は、小径プレートの中心から偏心しており、第1装着孔の中心は、大径プレートの中心から偏心していると好適である。支持軸部が挿通して、中心が支持軸部の軸芯と一致する挿通孔は小径プレートの中心から偏心し、小径プレートが装着される第1装着孔は大径プレートの中心から偏心しているため、小径プレートや大径プレートを回転させることにより、支持軸部を横方向(例えば水平方向)に自由にずらすことができ、支持部材の横方向の設置誤差を簡単に補正できる。その結果として、要素部材の設置位置の誤差を、支持軸部を動かすことで簡単に調整でき、寸法精度よく要素部材を支持部材に容易に接続することができる。   Furthermore, the fixing means includes a circular small-diameter plate in which an insertion hole and a support shaft retaining portion are formed, a circular large-diameter plate in which a circular first mounting hole in which the small-diameter plate is rotatably mounted is formed, A fixing plate formed with a circular second mounting hole on which a large-diameter plate is rotatably mounted, and the fixing means is the other end of the support shaft portion on which one end portion is supported by the pedestal portion. The portion side passes through the insertion hole of the small diameter plate, the first mounting hole of the large diameter plate, and the second mounting hole of the fixed plate, and the large diameter plate is mounted in the insertion hole of the small diameter plate, and the first mounting hole of the large diameter plate The fixed plate is fixed to the pedestal, and the large-diameter plate is provided with a small-diameter plate retaining portion that abuts the periphery of the small-diameter plate and locks the small-diameter plate. Around the large-diameter plate A large-diameter plate retaining portion that abuts against the large-diameter plate is provided, and the center of the insertion hole that coincides with the axis of the support shaft portion is eccentric from the center of the small-diameter plate. The center is preferably eccentric from the center of the large-diameter plate. The insertion hole through which the support shaft is inserted and the center of which coincides with the axis of the support shaft is eccentric from the center of the small diameter plate, and the first mounting hole in which the small diameter plate is mounted is eccentric from the center of the large diameter plate. Therefore, by rotating the small-diameter plate or the large-diameter plate, the support shaft portion can be freely displaced in the lateral direction (for example, the horizontal direction), and the installation error in the lateral direction of the support member can be easily corrected. As a result, an error in the installation position of the element member can be easily adjusted by moving the support shaft portion, and the element member can be easily connected to the support member with high dimensional accuracy.

さらに、支持軸部の他方の端部と要素受け部とは連結部により連結され、支持軸部と要素受け部とは、連結部によって支持軸部の軸線に沿って相対的に進退移動自在であると好適である。連結部によって支持軸部と要素受け部とを相対的に進退移動させることで、要素部材の設置高さの誤差を簡単に調整でき、寸法精度よく要素部材を支持部材に容易に接続することができる。   Further, the other end portion of the support shaft portion and the element receiving portion are connected by a connecting portion, and the support shaft portion and the element receiving portion are relatively movable along the axis of the support shaft portion by the connecting portion. It is preferable. By moving the support shaft part and the element receiving part relatively forward and backward by the connecting part, the error in the installation height of the element member can be easily adjusted, and the element member can be easily connected to the support member with high dimensional accuracy. it can.

さらに、連結部は、支持軸部の他方の端部に形成された雄ねじ部と、要素受け部に形成された雌ねじ部とを有し、挿通孔には、雄ねじ部が挿通すると好適である。支持軸部に雌ねじが形成されていると、雄ねじ部を形成する場合に比べて支持軸部の幅が広くなり、支持軸部が挿通する挿通孔を広げる必要を生じて固定手段の強度低下につながり易い。一方で、上記構成によれば、支持軸部の雄ねじ部が挿通孔に挿通するので、挿通孔は小さくなり、固定手段の強度低下が抑えられて小型化し易くなる。   Furthermore, it is preferable that the connecting portion has a male screw portion formed at the other end of the support shaft portion and a female screw portion formed at the element receiving portion, and the male screw portion is inserted into the insertion hole. When the internal thread is formed on the support shaft, the width of the support shaft is wider than when the external thread is formed, and it is necessary to widen the insertion hole through which the support shaft is inserted. Easy to connect. On the other hand, according to the said structure, since the external thread part of a support shaft part penetrates an insertion hole, an insertion hole becomes small and the strength reduction of a fixing means is suppressed and it becomes easy to reduce in size.

支持軸部は、軸線と同軸線となる角柱状の首部を有すると好適である。レンチなどの工具で首部を把持して支持軸部を簡単に回すことができ、要素受け部を相対的に進退移動させて要素部材の高さ方向の調整を簡単に実行できる。   It is preferable that the support shaft portion has a prismatic neck portion that is coaxial with the axis. The support shaft portion can be easily rotated by gripping the neck portion with a tool such as a wrench, and the adjustment of the element member in the height direction can be easily performed by relatively moving the element receiving portion back and forth.

さらに、台座部は、支承端の凸面が当接する平坦な受け面を有すると好適である。支承端の凸面が当接する受け面が平坦あれば、支持軸部を横にずらす際の抵抗は少なく、設置位置の誤差の調整を行い易くなる。   Furthermore, it is preferable that the pedestal portion has a flat receiving surface with which the convex surface of the support end abuts. If the receiving surface with which the convex surface of the support end abuts is flat, the resistance when the support shaft portion is shifted to the side is small, and the error of the installation position can be easily adjusted.

さらに、要素部材は建築物の基礎梁であり、支持部材は基礎梁を支える基礎杭であると好適である。施工誤差により、基準高さに対して、上部構造体の基礎の高さ、杭頭高さが合わない場合であっても、上記構成によれば、基礎杭の打ち込みの位置の不揃いを吸収することができ、その上に設置される基礎梁の設置誤差を防止しながら基礎梁を基礎杭に容易に接続することができる。   Furthermore, the element member is preferably a building foundation beam, and the support member is preferably a foundation pile supporting the foundation beam. Even if the height of the foundation of the upper structure and the height of the pile head do not match the reference height due to construction errors, according to the above configuration, the unevenness of the placement position of the foundation pile is absorbed. The foundation beam can be easily connected to the foundation pile while preventing the installation error of the foundation beam installed thereon.

本発明によれば、支持部材の施工上の設置誤差によって生じる要素部材の設置誤差を簡単に調整することができ、寸法精度良く要素部材を支持部材に容易に接続することができる。   ADVANTAGE OF THE INVENTION According to this invention, the installation error of the element member produced by the installation error on construction of a support member can be adjusted easily, and an element member can be easily connected to a support member with a sufficient dimensional accuracy.

以下、本発明の好適な実施形態について図面を参照しながら説明する。図1は、本発明の実施形態に係る接合構造の分解斜視図であり、図2は接合構造の断面図である。なお、図面の説明において、同一または相当要素には同一の符号を付し、重複する説明は省略する。   Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a joint structure according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the joint structure. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted.

なお、本明細書において、施工上の設置誤差(以下単に誤差という場合もある。)とは、地盤に埋め込む際(建て入れ時)の支持部材である杭の設置位置(杭の配置)や地盤面からの杭の出寸法(杭頭の高さ)が期待される設計基準に対して「ズレ」る大きさをいい、杭の建て入れ時の鉛直方向に対して杭が「倒れ」る程度(杭の転倒)をいい、さらに杭の設置誤差に影響される要素部材である基礎梁(天端面が問題となる)の設置位置や設置高さのズレ、および設置状態の傾きの程度(基礎天端面が水平基準面に対して傾斜する程度)を含む。また、設計基準とは、例えば、敷地境界線や道路境界線からの離れ寸法、支持部材同士の設置間隔の寸法、仮想の水平基準面(地盤など)からの高さ寸法、および鉛直方向線に対する倒れの角度または寸法をいう。   In this specification, installation error in construction (hereinafter sometimes referred to simply as “error”) refers to the installation position (pile placement) or ground of a pile that is a support member when embedding in the ground (when erected). The size of the pile that protrudes from the surface (height of the pile head) is the amount of deviation from the expected design standard, and the extent to which the pile “falls” with respect to the vertical direction when the pile is built (Falling of piles) and the displacement of the installation position and installation height of the foundation beam (the top end surface is a problem) that is affected by pile installation errors, and the degree of inclination of the installation state (foundation The top end face is inclined with respect to the horizontal reference plane). The design standard is, for example, a distance from a site boundary line or a road boundary line, a dimension of an installation interval between support members, a height dimension from a virtual horizontal reference plane (such as the ground), and a vertical direction line. The angle or dimension of the fall.

中低層住宅などの建築物を施工する際には、建築物本体(「上部構造体」ともいう)からの力を地盤に伝達し、建築物本体を安全に支えるための基礎(「下部構造体」ともいう)を施工する。一般に基礎には、フーチング基礎やべた基礎などの直接基礎の他に杭基礎などがあるが、杭基礎は、フーチング基礎やべた基礎に比較すると、コンクリート工事となる部分が杭と基礎梁の接続部分に限られているものの、なお接続部の鉄筋施工(配筋)やコンクリート打設と硬化のために乾燥を待つ時間などが必要となる点で不利である。これに対して、本発明の実施形態では、乾式の接合構造であるため、このようなコンクリート工事を一切不要とするものであり、施工期間が短縮できるという利点がある。   When constructing buildings such as medium- and low-rise housing, the foundation ("understructure" for transmitting the force from the building body (also called "upper structure") to the ground and supporting the building body safely ”). In general, foundations include pile foundations in addition to direct foundations such as footing foundations and solid foundations, but compared to footing foundations and solid foundations, pile foundations are the part where the concrete work is connected between the pile and the foundation beam. However, it is disadvantageous in that it requires time to wait for drying for reinforcing bar construction (bar arrangement) and concrete placement and hardening of the connection part. On the other hand, in the embodiment of the present invention, since it is a dry-type joint structure, there is an advantage that such a concrete work is unnecessary and the construction period can be shortened.

本実施形態は、建築物本体1(図13参照)の要素部材となる基礎梁5と、建築物本体1の柱や壁床の荷重を負担するために基礎梁5を下から支える鋼管杭(支持部材)3とを接続する接合構造7であり、杭基礎において利用される。接合構造7は、基礎梁5に固定される基礎梁固定プレート(要素受け部)9、鋼管杭3の上端に固定される杭頭キャップ(台座部)19、杭頭キャップ19によって支承される球座頭ボルト(支持軸部)11及び球座頭ボルト11の横方向(水平方向)への位置補正を行い、且つ球座頭ボルト11を杭頭キャップ19上に固定するための位置調整部(固定手段)21を備えて構成される。なお、以下の説明では、鉛直上方を「上方」、鉛直下方を「下方」として説明し、水平方向を「横方向」として説明する。   In the present embodiment, the foundation beam 5 which is an element member of the building body 1 (see FIG. 13), and the steel pipe pile that supports the foundation beam 5 from below to bear the load of the pillars and wall floors of the building body 1 ( It is the joining structure 7 which connects the support member 3), and is utilized in a pile foundation. The joint structure 7 includes a foundation beam fixing plate (element receiving portion) 9 fixed to the foundation beam 5, a pile head cap (pedestal portion) 19 fixed to the upper end of the steel pipe pile 3, and a ball supported by the pile head cap 19. A position adjustment unit (fixing means) for correcting the lateral position (horizontal direction) of the head bolt (support shaft) 11 and the ball head bolt 11 and fixing the ball head bolt 11 on the pile head cap 19 21 is comprised. In the following description, the upper vertical direction is described as “upper”, the lower vertical is described as “downward”, and the horizontal direction is described as “lateral direction”.

図1及び図2に示されるように、基礎梁5はH形鋼であり、下部のフランジに鋼材からなる基礎梁固定プレート9がボルト及びナットを用いて接合されている。基礎梁固定プレート9の下面側には、雌ねじが形成された高ナット部(雌ねじ部)9aが設けられている。高ナット部9aには、球座頭ボルト11が螺合する。基礎梁固定プレート9は、基礎梁5から伝達される鉛直荷重を受け、下方の球座頭ボルト11に伝達する。   As shown in FIGS. 1 and 2, the foundation beam 5 is H-shaped steel, and a foundation beam fixing plate 9 made of steel is joined to the lower flange using bolts and nuts. On the lower surface side of the foundation beam fixing plate 9, a high nut portion (female screw portion) 9a in which a female screw is formed is provided. The ball head bolt 11 is screwed into the high nut portion 9a. The foundation beam fixing plate 9 receives the vertical load transmitted from the foundation beam 5 and transmits the vertical load to the lower ball head bolt 11.

球座頭ボルト11の上端部(他方の端部)には、高ナット部9aに螺合する雄ねじ部11aが形成されている。雄ねじ部11aは、ボルト押え内プレート13に形成された円形の挿通孔Haに通された後、基礎梁固定プレート9の高ナット部9aに螺合される。高ナット部9a及び雄ねじ部11aによって連結部14が構成され、基礎梁5と鋼管杭3とは連結部14によって球座頭ボルト11の軸線Lに沿って相対的に進退移動自在に連結されている。   A male screw portion 11 a that is screwed into the high nut portion 9 a is formed at the upper end portion (the other end portion) of the ball head bolt 11. The male screw portion 11 a is threaded into the high nut portion 9 a of the foundation beam fixing plate 9 after passing through a circular insertion hole Ha formed in the bolt presser inner plate 13. A connecting portion 14 is constituted by the high nut portion 9a and the male screw portion 11a, and the foundation beam 5 and the steel pipe pile 3 are connected by the connecting portion 14 so as to be relatively movable back and forth along the axis L of the ball head bolt 11. .

球座頭ボルト11の下端部(一方の端部)には、支承端となる頭部11cが設けられており、頭部11cと雄ねじ部11aとの間には、雄ねじ部11aの軸線Lと同軸線となる六角柱状の首部11dが設けられている。施工作業者は、首部11dをレンチなどの工具で把持して球座頭ボルト11を簡単に回すことができ、基礎梁固定プレート9の高ナット部9aに対する球座頭ボルト11の雄ねじ部11aの進入度合いを簡単に調整できる。なお、首部11dの形状は六角柱状に限定されず、その他の多角柱状であってもよい。   A head portion 11c serving as a support end is provided at the lower end portion (one end portion) of the ball head bolt 11 and is coaxial with the axis L of the male screw portion 11a between the head portion 11c and the male screw portion 11a. A hexagonal columnar neck portion 11d that is a line is provided. The construction worker can easily turn the ball head bolt 11 by gripping the neck portion 11d with a tool such as a wrench, and the degree of penetration of the male screw portion 11a of the ball head bolt 11 with respect to the high nut portion 9a of the foundation beam fixing plate 9 Can be adjusted easily. The shape of the neck portion 11d is not limited to a hexagonal column shape, and may be another polygonal column shape.

鋼管杭3は筒状の鋼材からなる基礎杭であり、鋼管杭3の上端に被せられた杭頭キャップ19は鋼管杭3に固定される。杭頭キャップ19は、鋼管杭3の上端を塞ぐ円形のフランジプレート部19aと、フランジプレート部19aの下面側から突き出し、鋼管杭3の杭頭部を飲み込んだ状態で溶接される筒状の杭装着部19bとを有している。   The steel pipe pile 3 is a foundation pile made of a tubular steel material, and a pile head cap 19 placed on the upper end of the steel pipe pile 3 is fixed to the steel pipe pile 3. The pile head cap 19 is a cylindrical flange plate portion 19a that closes the upper end of the steel pipe pile 3, and a cylindrical pile that protrudes from the lower surface side of the flange plate portion 19a and is welded while swallowing the pile head portion of the steel pipe pile 3 And a mounting portion 19b.

球座頭ボルト11の頭部11cはフランジプレート部19aに支承される。フランジプレート部19aの上面(受け面)19cは平坦であり、頭部11cには、フランジプレート部19aの上面19cに当接する球座面(凸面)11bが形成されている。球座面11bは、数十cm〜数m程度の曲率半径を有する球面の一部である。   The head 11c of the ball head bolt 11 is supported on the flange plate portion 19a. The upper surface (receiving surface) 19c of the flange plate portion 19a is flat, and a spherical seat surface (convex surface) 11b that contacts the upper surface 19c of the flange plate portion 19a is formed on the head portion 11c. The spherical seat surface 11b is a part of a spherical surface having a radius of curvature of about several tens of centimeters to several meters.

球座頭ボルト11は、ボルト押え内プレート13に形成された円形の挿通孔Haに通された後、頭部11cの球座面11bをフランジプレート部19aの上面19cに当接させた状態で立設される。円形の挿通孔Haは、頭部11cを支点にして揺動自在の孔径を有する。すなわち球座頭ボルト11は、挿通孔Haを形成する内周面(支持軸抜け止め部)13aとフランジプレート部19aの上面(受け面)19cにより形成される揺動空間Tにおいて揺動自在に動く。   The ball seat head bolt 11 passes through a circular insertion hole Ha formed in the bolt presser inner plate 13, and then stands with the ball seat surface 11b of the head portion 11c in contact with the upper surface 19c of the flange plate portion 19a. Established. The circular insertion hole Ha has a swingable hole diameter with the head portion 11c as a fulcrum. That is, the ball head bolt 11 moves in a swinging manner in a swinging space T formed by an inner peripheral surface (support shaft retaining portion) 13a that forms the insertion hole Ha and an upper surface (receiving surface) 19c of the flange plate portion 19a. .

図3〜図6に示されるように、球座頭ボルト11の頭部11cは、雄ねじ部11aに比較して径方向に張り出している側面部(張出し部)11eを有する。側面部11eは、首部11d側の直径d1よりも球座面11b側の直径d2の方が大きくなるように拡径したテーパ形状である。一方で、ボルト押え内プレート13には、挿通孔Haを形成する内周面(支持軸抜け止め部)13aが形成されている。内周面13aは、上端面側の内径(挿通孔Haの上端側の孔径)d3よりも下端面側の内径(挿通孔Haの下端側の孔径)d4の方が大きくなるようなテーパ形状である。内周面13aと頭部11cの側面部11eとの間には僅かな隙間Sが空くように形成されている。   As shown in FIGS. 3 to 6, the head portion 11 c of the ball seat head bolt 11 has a side surface portion (projecting portion) 11 e projecting in the radial direction as compared with the male screw portion 11 a. The side surface portion 11e has a tapered shape in which the diameter d2 on the spherical seat surface 11b side is larger than the diameter d1 on the neck portion 11d side. On the other hand, an inner peripheral surface (support shaft retaining portion) 13a that forms the insertion hole Ha is formed in the bolt retainer inner plate 13. The inner peripheral surface 13a has a tapered shape such that the inner diameter on the lower end surface (hole diameter on the lower end side of the insertion hole Ha) d4 is larger than the inner diameter on the upper end surface side (hole diameter on the upper end side of the insertion hole Ha) d3. is there. A slight gap S is formed between the inner peripheral surface 13a and the side surface portion 11e of the head portion 11c.

建物に外力(風や地震などの水平力)が作用すると、躯体構造(柱、筋交い、床等)から基礎梁を経由して杭を上方へ持ち上げようとする引き抜き力が作用するので基礎梁と杭の接合部である球座頭ボルト11は、この引き抜き力を負担しなければならない。   When an external force (horizontal force such as wind or earthquake) acts on the building, the pulling force that lifts the pile upward from the frame structure (columns, bracing, floor, etc.) via the foundation beam acts. The ball head bolt 11 that is the joint of the pile must bear this pulling force.

球座頭ボルト11に引き抜き力が作用した場合(図4参照)、球座頭ボルト11の頭部11cは上方に僅かに移動し、側面部11eの下端が、ボルト押え内プレート13の内周面13aに当接する。その結果、内周面13aは、球座頭ボルト11に干渉して係止し、球座頭ボルト11がボルト押え内プレート13から上方に引き抜かれることを防止する。なお、本実施形態では、好ましい形態として断面視で球座頭ボルト11の側面部11eと挿通孔Haの内周面13aとが相対して対称的に下方に拡がるように傾斜している円錐状のテーパ形状であり、このテーパ形状同士の係り合いで前記引き抜き力に抵抗する構成としたが、これに限られるものではなく、鉤型形状とテーパ形状の係り合いで前記引き抜き力に抵抗する構成とすることも考えられる。例えば、張出し部として、球座頭ボルト11から径方向に張り出したフランジを設け、球座頭ボルト11の側面部11eを鉤型形状とし、この球座頭ボルト11の側面部11eに相対して挿通孔Haの内周面13aが下方に拡がるように傾斜している円錐状のテーパ形状する場合が考えられる。また、これとは逆に支持軸抜け止め部として、ボルト押え内プレート13に段差を持った内周面(断面視鉤形)を形成して、球座頭ボルト11のテーパ形状に当接するようにしてもよい。   When a pulling force is applied to the ball head bolt 11 (see FIG. 4), the head 11c of the ball head bolt 11 moves slightly upward, and the lower end of the side surface portion 11e is the inner peripheral surface 13a of the bolt presser inner plate 13. Abut. As a result, the inner peripheral surface 13 a interferes with and locks with the ball head bolt 11, and prevents the ball head bolt 11 from being pulled upward from the bolt presser inner plate 13. In the present embodiment, as a preferred form, the side surface portion 11e of the ball head bolt 11 and the inner peripheral surface 13a of the insertion hole Ha are inclined in a symmetrical manner so as to expand downward relative to each other. Although it is a taper shape, it was set as the structure which resists the said pull-out force by the relationship of this taper shape, but it is not restricted to this, The structure which resists the said pull-out force by the relationship between a saddle shape and a taper shape and It is also possible to do. For example, a flange projecting in a radial direction from the ball head bolt 11 is provided as the overhang portion, and the side surface portion 11e of the ball seat head bolt 11 is formed in a bowl shape, and the insertion hole Ha is opposed to the side surface portion 11e of the ball seat head bolt 11. A conical taper shape in which the inner peripheral surface 13a is inclined so as to expand downward is conceivable. On the contrary, as a support shaft retaining portion, an inner peripheral surface having a step is formed on the bolt retainer inner plate 13 so as to contact the tapered shape of the ball head bolt 11. May be.

また、球座頭ボルト11は、隙間Sが空いているために、挿通孔Ha内で頭部11cを支点にして揺動自在である。従って、鋼管杭3の鉛直性の倒れに起因して鋼管杭3に接合した基礎梁5の設置状態が鉛直方向に対して傾いている場合であっても、球座頭ボルト11の傾きを調整することで、基礎梁5の天端面を水平に保つことができる。   Further, since the space head bolt 11 has a gap S, the ball head bolt 11 can swing around the head 11c in the insertion hole Ha. Therefore, even if the installation state of the foundation beam 5 joined to the steel pipe pile 3 is inclined with respect to the vertical direction due to the vertical collapse of the steel pipe pile 3, the inclination of the ball head bolt 11 is adjusted. Thus, the top end face of the foundation beam 5 can be kept horizontal.

球座頭ボルト11の傾きの調整について図5を参照して具体的に説明する。図5は、鋼管杭3の軸線方向に対して球座頭ボルト11を傾けた状態を実線で示し、傾ける前の状態を二点鎖線で示す拡大図である。一例として、球座頭ボルト11の長手方向の寸法を85mm程度とし、頭部11cの側面部11eは、首部11d側の直径d1を47mm、球座面11b側の直径d2を57mmとする。一方で、ボルト押え内プレート13の板厚を12mmとし、ボルト押え内プレート13の挿通孔Haの孔径は、頭部11cの側面部11eよりも1mm(片側の隙間Sは0.5mm)程度大きくなるように形成する。球座頭ボルト11は、内周面13aのテーパ形状に倣って隙間Sの分だけ傾くことができ、この例によれば、杭の建て入れ精度(鉛直線に対する傾き)が1/24程度の場合まで調整できる。通常、鋼管杭3は、施工基準1/100を満たす施工を行う必要があり、この例のように、1/24程度まで調整できれば、通常の鋼管杭3の倒れにより生じる基礎梁5の傾きの誤差を十分に吸収して調整できる。   The adjustment of the inclination of the ball head bolt 11 will be specifically described with reference to FIG. FIG. 5 is an enlarged view showing a state in which the ball head bolt 11 is tilted with respect to the axial direction of the steel pipe pile 3 by a solid line and a state before being tilted by a two-dot chain line. As an example, the dimension of the ball seat head bolt 11 in the longitudinal direction is about 85 mm, and the side surface portion 11e of the head portion 11c has a diameter d1 on the neck portion 11d side of 47 mm and a diameter d2 on the ball seat surface 11b side of 57 mm. On the other hand, the thickness of the bolt retainer inner plate 13 is 12 mm, and the hole diameter of the insertion hole Ha of the bolt retainer inner plate 13 is about 1 mm larger than the side surface portion 11e of the head portion 11c (the gap S on one side is 0.5 mm). It forms so that it may become. The ball head bolt 11 can be inclined by the gap S following the taper shape of the inner peripheral surface 13a. According to this example, the pile installation accuracy (inclination with respect to the vertical line) is about 1/24. Can be adjusted. Usually, the steel pipe pile 3 needs to perform construction satisfying the construction standard 1/100. If the steel pipe pile 3 can be adjusted to about 1/24 as in this example, the inclination of the foundation beam 5 caused by the fall of the normal steel pipe pile 3 is reduced. The error can be fully absorbed and adjusted.

図6、図7及び図8に示されるように、球座頭ボルト11は、位置調整部21によって横方向への位置補正が行われる。位置調整部21は、挿通孔Ha及び内周面13aが形成された前述のボルト押え内プレート13と、ボルト押え内プレート13が回転自在に装着される円形の第1装着孔Hbが形成されたボルト押え外プレート15と、ボルト押え外プレート15が回転自在に装着される円形の第2装着孔Hcが形成された固定プレート17とを備えて構成されている。   As shown in FIGS. 6, 7, and 8, the ball head bolt 11 is laterally corrected by the position adjusting unit 21. The position adjusting portion 21 is formed with the above-described bolt presser inner plate 13 in which the insertion hole Ha and the inner peripheral surface 13a are formed, and a circular first mounting hole Hb in which the bolt presser inner plate 13 is rotatably mounted. The bolt presser outer plate 15 and a fixed plate 17 having a circular second mounting hole Hc in which the bolt presser outer plate 15 is rotatably mounted are configured.

ボルト押え内プレート13は、上端面の直径d5よりも下端面の直径d6の方が大きくなるようなテーパ形状の外周面13bを有する。ボルト押え外プレート15は、第1装着孔Hbを形成する内周面15aを有する。内周面15aは、ボルト押え内プレート13の外周面13bに当接するようなテーパ形状であり、上端面側の内径(第1装着孔Hbの上端側の孔径)d7よりも下端面側の内径(第1装着孔Hbの下端側の孔径)d8の方が大きくなっている。内周面(小径プレート抜け止め部)15aは、ボルト押え内プレート13の周縁であるテーパ形状の外周面13bに当接してボルト押え内プレート13を係止する。   The bolt retainer inner plate 13 has a tapered outer peripheral surface 13b such that the diameter d6 of the lower end surface is larger than the diameter d5 of the upper end surface. The bolt retainer outer plate 15 has an inner peripheral surface 15a that forms the first mounting hole Hb. The inner peripheral surface 15a has a tapered shape so as to contact the outer peripheral surface 13b of the bolt retainer inner plate 13, and has an inner diameter on the lower end surface side than an inner diameter on the upper end surface side (a hole diameter on the upper end side of the first mounting hole Hb) d7. (Hole diameter on the lower end side of the first mounting hole Hb) d8 is larger. The inner peripheral surface (small-diameter plate retaining portion) 15 a abuts the tapered outer peripheral surface 13 b that is the peripheral edge of the bolt presser inner plate 13 to lock the bolt presser inner plate 13.

ボルト押え外プレート15は、上端面の直径d9よりも下端面の直径d10の方が大きくなるようなテーパ形状の外周面15bを有する。固定プレート17は、第2装着孔Hcを形成する内周面17aを有する。内周面17aは、ボルト押え外プレート15の外周面15bに当接するようなテーパ形状であり、上端面側の内径(第2装着孔Hcの上端側の孔径)d11よりも下端面側の内径(第2装着孔Hcの下端側の孔径)d12の方が大きくなっている。内周面(大径プレート抜け止め部)17aは、ボルト押え外プレート15の周縁であるテーパ状の外周面15bに当接してボルト押え外プレート15を係止する。   The bolt retainer outer plate 15 has a tapered outer peripheral surface 15b such that the diameter d10 of the lower end surface is larger than the diameter d9 of the upper end surface. The fixing plate 17 has an inner peripheral surface 17a that forms the second mounting hole Hc. The inner peripheral surface 17a has a tapered shape so as to contact the outer peripheral surface 15b of the bolt presser outer plate 15, and has an inner diameter on the lower end surface side than an inner diameter on the upper end surface side (a hole diameter on the upper end side of the second mounting hole Hc) d11. (Hole diameter on the lower end side of the second mounting hole Hc) d12 is larger. The inner peripheral surface (large diameter plate retaining portion) 17 a abuts the tapered outer peripheral surface 15 b which is the peripheral edge of the bolt presser outer plate 15 to lock the bolt presser outer plate 15.

固定プレート17は、杭頭キャップ19のフランジプレート部19aにボルト止めすることができ、3枚に分割された同厚の各プレート13,15,17は、テーパ形状同士の係り合いにより、1枚もののプレートとなり、球座頭ボルト11は、各プレート13,15,17の孔(挿通孔Ha、第1装着孔Hb及び第2装着孔Hc)を貫通して、杭頭キャップ19の受け面19cに固定するための固定手段となる。固定プレート17はボルト押え外プレート15を上方から押え込み、さらに、ボルト押え外プレート15はボルト押え内プレート13を上方から押え込み、さらに、ボルト押え内プレート13は球座頭ボルト11の頭部11cを上方から押え込むようになる。   The fixing plate 17 can be bolted to the flange plate portion 19a of the pile head cap 19, and each of the plates 13, 15, and 17 of the same thickness divided into three pieces is one piece due to the engagement between the tapered shapes. The ball head bolt 11 passes through the holes (the insertion hole Ha, the first mounting hole Hb, and the second mounting hole Hc) of each plate 13, 15, and 17 to the receiving surface 19 c of the pile head cap 19. It becomes a fixing means for fixing. The fixing plate 17 presses the bolt presser outer plate 15 from above, and the bolt presser outer plate 15 presses the bolt presser inner plate 13 from above, and the bolt presser inner plate 13 moves the head 11c of the ball head bolt 11 upward. It starts to hold in.

その結果、球座頭ボルト11は、位置調整部21(固定手段)を構成する各プレート13,15,17からの引き抜きが防止され、その状態で保持される。なお、本実施形態では、各プレート13,15,17同士は、テーパ形状同士の係り合いによって抜けが防止される構成としたが、例えば、ボルト押え内プレート13やボルト押え外プレート15の外周面をテーパ形状にせず、ボルト押え外プレート15の内周面には、ボルト押え内プレート13の上端面の縁に当接する段差を形成してボルト押え内プレート13の抜けを防止する断面視鉤型の小径プレート抜け止め部を構成し、固定プレート17の内周面には、ボルト押え外プレート15の上端面の縁に当接する段差を形成してボルト押え外プレート15の抜けを防止する断面視鉤型の大径プレート抜け止め部を構成するようにしてもよい。   As a result, the ball head bolt 11 is prevented from being pulled out from the plates 13, 15, and 17 constituting the position adjusting portion 21 (fixing means) and is held in that state. In the present embodiment, the plates 13, 15, 17 are configured to be prevented from coming off by the engagement of the tapered shapes. For example, the outer peripheral surface of the bolt presser inner plate 13 or the bolt presser outer plate 15 is used. Is not tapered, and a step in contact with the edge of the upper end surface of the bolt retainer inner plate 13 is formed on the inner peripheral surface of the bolt retainer outer plate 15 to prevent the bolt retainer inner plate 13 from coming off. A sectional view that prevents the bolt presser outer plate 15 from coming off by forming a step contacting the edge of the upper end surface of the bolt presser outer plate 15 on the inner peripheral surface of the fixed plate 17. A bowl-shaped large-diameter plate retaining portion may be configured.

固定プレート17の第2装着孔Hcの中心C1と鋼管杭3の軸心及びボルト押え外プレート15の中心C2は一致している。一方で、ボルト押え外プレート15に形成された第1装着孔Hbの中心C3は、ボルト押え外プレート15の中心C2から偏心している。また、第1装着孔Hbの中心C3は、ボルト押え内プレート13の中心C4に一致しており、ボルト押え内プレート13に形成された挿通孔Haの中心C5は、ボルト押え内プレート13の中心C4から偏心している。なお、球座頭ボルト11の軸線Lは、挿通孔Haの中心C5を通っている。   The center C1 of the second mounting hole Hc of the fixing plate 17 and the axis C2 of the steel pipe pile 3 and the center C2 of the bolt presser outer plate 15 coincide. On the other hand, the center C3 of the first mounting hole Hb formed in the bolt presser outer plate 15 is eccentric from the center C2 of the bolt presser outer plate 15. The center C3 of the first mounting hole Hb coincides with the center C4 of the bolt presser inner plate 13, and the center C5 of the insertion hole Ha formed in the bolt presser inner plate 13 is the center of the bolt presser inner plate 13. Eccentric from C4. The axis L of the ball head bolt 11 passes through the center C5 of the insertion hole Ha.

固定プレート17が仮締めされた状態では、ボルト押え外プレート15及びボルト押え内プレート13はそれぞれ回転可能である。そして、例えば、ボルト押え内プレート13(図7参照)を回転させると、挿通孔Haはボルト押え内プレート13の中心C4回りを、円を描くように移動し、挿通孔Haと一緒に球座頭ボルト11も移動する。また、ボルト押え外プレート15(図8参照)を回転させると、第1装着孔Hbはボルト押え外プレート15の中心C2回りを、円を描くように移動し、第1装着孔Hbと一緒にボルト押え内プレート13も移動し、結果的に球座頭ボルト11も移動する。このように、ボルト押え内プレート13及びボルト押え外プレート15を相互に回転させることで、挿通孔Haや第1装着孔Hbはそれぞれ円運動し、双方の複合的な移動によって挿通孔Ha内の球座頭ボルト11は任意の位置に平行移動する。その結果、球座頭ボルト11の横方向への移動補正を行うことができる。   In the state where the fixing plate 17 is temporarily tightened, the bolt press outer plate 15 and the bolt press inner plate 13 can rotate. For example, when the bolt retainer inner plate 13 (see FIG. 7) is rotated, the insertion hole Ha moves around the center C4 of the bolt retainer inner plate 13 so as to draw a circle, and together with the insertion hole Ha, the ball seat head The bolt 11 also moves. When the bolt retainer outer plate 15 (see FIG. 8) is rotated, the first mounting hole Hb moves around the center C2 of the bolt retainer outer plate 15 so as to draw a circle, and together with the first mounting hole Hb. The bolt retainer inner plate 13 also moves, and as a result, the ball head bolt 11 also moves. In this way, by rotating the bolt retainer inner plate 13 and the bolt retainer outer plate 15 relative to each other, the insertion hole Ha and the first mounting hole Hb each move circularly, and the combined movement of both causes the insertion in the insertion hole Ha. The ball head bolt 11 translates to an arbitrary position. As a result, the lateral movement correction of the ball head bolt 11 can be performed.

次に、図9を参照して、接合構造7の作用について説明する。例えば、図9(a)に示されるように、鋼管杭3に鉛直性倒れが生じている場合、そのまま鋼管杭3に基礎梁5を接合すると、基礎梁5も鉛直方向に対して転倒している状態になってしまう。しかしながら、接合構造7では、位置調整部21の各プレート13,15,17を仮締めした状態で、球座頭ボルト11が杭頭キャップ19の上端に支承され、且つ、ある程度の揺動を許容されているので、位置調整部21を分解して取り外すことなく、球座頭ボルト11の傾きを調整することで、基礎梁5の天端面を水平に保つことができる。   Next, the operation of the joint structure 7 will be described with reference to FIG. For example, as shown in FIG. 9A, when the vertical collapse occurs in the steel pipe pile 3, if the foundation beam 5 is joined to the steel pipe pile 3 as it is, the foundation beam 5 also falls in the vertical direction. It will be in a state. However, in the joint structure 7, the ball head bolt 11 is supported on the upper end of the pile head cap 19 with the plates 13, 15, and 17 of the position adjustment unit 21 temporarily tightened, and is allowed to swing to some extent. Therefore, the top end surface of the foundation beam 5 can be kept horizontal by adjusting the inclination of the ball head bolt 11 without disassembling and removing the position adjusting unit 21.

さらに、図9(b)に示されるように、基礎梁5が基準位置からズレていたとしても、位置調整部21を仮締めした状態で、位置調整部21のボルト押え外プレート15及びボルト押え内プレート13を相互に回転させることで、横方向の任意の位置に微調整でき、基礎梁5に対して横方向への位置補正を行うことができる。   Further, as shown in FIG. 9B, even if the foundation beam 5 is displaced from the reference position, the bolt press outer plate 15 and the bolt presser of the position adjuster 21 are temporarily tightened with the position adjuster 21 temporarily tightened. By rotating the inner plates 13 with respect to each other, it is possible to finely adjust to an arbitrary position in the lateral direction, and to perform position correction in the lateral direction with respect to the foundation beam 5.

さらに、図9(c)に示されるように、基礎梁5が基準高さからズレていたとしても、位置調整部21を仮締めした状態で、連結部14の球座頭ボルト11を回転させることで、基礎梁5と鋼管杭3とを接近または離間させることができ、基礎梁5の高さ方向の微調整を簡単に行うことができる。   Further, as shown in FIG. 9C, even if the foundation beam 5 is displaced from the reference height, the ball head bolt 11 of the connecting portion 14 is rotated with the position adjusting portion 21 temporarily tightened. Thus, the foundation beam 5 and the steel pipe pile 3 can be approached or separated from each other, and fine adjustment in the height direction of the foundation beam 5 can be easily performed.

(施工方法)
次に、図10〜図13を参照し、上記の接合構造7を利用して鋼管杭3と基礎梁5とを接続する施工方法を説明する。図10〜図12は、施工の手順を示すための側面図であり、図13は、杭基礎で建築物本体を支持している状態を模式的に示す側面図である。
(Construction method)
Next, with reference to FIGS. 10-13, the construction method which connects the steel pipe pile 3 and the foundation beam 5 using said joining structure 7 is demonstrated. FIGS. 10-12 is a side view for showing the procedure of construction, and FIG. 13 is a side view which shows typically the state which is supporting the building main body by the pile foundation.

図10(a)に示されるように、第1の工程では、地盤Gの所定エリアに複数の鋼管杭3を所定の深さまで打ち込む。その後、各鋼管杭3の杭頭の高さを揃える。すなわち鋼管杭3の上部を切断し、各鋼管杭3同士の上端高さを略一致させる。図10(b)に示されるように、第2の工程では、杭頭キャップ19を鋼管杭3の上端に被せるように載せ、杭頭キャップ19を鋼管杭3に溶接して固定する。   As shown in FIG. 10A, in the first step, a plurality of steel pipe piles 3 are driven into a predetermined area of the ground G to a predetermined depth. Then, the height of the pile head of each steel pipe pile 3 is arranged. That is, the upper part of the steel pipe pile 3 is cut | disconnected, and the upper end height of each steel pipe pile 3 is made to correspond substantially. As shown in FIG. 10B, in the second step, the pile head cap 19 is placed so as to cover the upper end of the steel pipe pile 3, and the pile head cap 19 is welded and fixed to the steel pipe pile 3.

図11(a)に示されるように、第3の工程では、球座頭ボルト11、位置調整部21及び基礎梁固定プレート9を予めユニット化(工場等で各部品を一体化すること)して準備し、杭頭キャップ19の上に設置する。すなわち、球座頭ボルト11をボルト押え内プレート13、ボルト押え外プレート15及び固定プレート17の孔に挿入しておき、さらに、球座頭ボルト11の雄ねじ部11aを基礎梁固定プレート9の高ナット部9aに螺合してユニット化する。その後、そのユニットを杭頭キャップ19のフランジプレート部19a上に載せる。次に、図11(b)に示されるように、第4の工程では、杭頭キャップ19上に設置されたユニットの基礎梁固定プレート9に基礎梁5のフランジを載せる。   As shown in FIG. 11 (a), in the third step, the ball head bolt 11, the position adjusting unit 21 and the base beam fixing plate 9 are previously unitized (integrating each part at a factory or the like). Prepare and install on pile head cap 19. That is, the ball head bolt 11 is inserted into the holes of the bolt retainer inner plate 13, the bolt retainer outer plate 15 and the fixing plate 17, and the male threaded portion 11 a of the ball seat head bolt 11 is inserted into the high nut portion of the foundation beam fixing plate 9. Screw into 9a to form a unit. Thereafter, the unit is placed on the flange plate portion 19 a of the pile head cap 19. Next, as shown in FIG. 11 (b), in the fourth step, the flange of the foundation beam 5 is placed on the foundation beam fixing plate 9 of the unit installed on the pile head cap 19.

図12(a)に示されるように、第5の工程では、杭頭キャップ19のフランジプレート部19aと位置調整部21の固定プレート17とをボルトとナットで螺合して仮締結し、さらに、基礎梁5のフランジと接合構造7の基礎梁固定プレート9とをボルトとナットで螺合して仮締結する。この第5の工程では、球座頭ボルト11を僅かに傾けることで、基礎梁5の天端面の基準位置に対する傾き(鋼管杭3の建て入れの悪さ(鉛直方向の転倒)の影響)を補正し、さらに、位置調整部21のボルト押え内プレート13及びボルト押え外プレート15を回転させて球座頭ボルト11を横方向に移動させることで、鋼管杭3が横にずれていても基礎梁5の設置位置を補正する。   As shown in FIG. 12 (a), in the fifth step, the flange plate portion 19a of the pile head cap 19 and the fixing plate 17 of the position adjusting portion 21 are screwed together with bolts and nuts and temporarily tightened. Then, the flange of the foundation beam 5 and the foundation beam fixing plate 9 of the joint structure 7 are screwed together with bolts and nuts and temporarily tightened. In this fifth step, the inclination of the top end surface of the foundation beam 5 with respect to the reference position (influence of poor installation of the steel pipe pile 3 (vertical fall)) is corrected by slightly inclining the ball head bolt 11. Furthermore, by rotating the bolt retainer inner plate 13 and the bolt retainer outer plate 15 of the position adjusting portion 21 and moving the ball head bolt 11 in the lateral direction, the steel beam pile 3 can be displaced laterally even if the steel pipe pile 3 is laterally displaced. Correct the installation position.

図12(b)に示されるように、第6の工程では、球座頭ボルト11の首部11dをレンチで把持して回し、球座頭ボルト11に螺合する基礎梁固定プレート9を上下方向に移動させて基礎梁5の天端面の高さを調節し、必要であれば、上記補正を適宜繰り返す。さらに一つの基礎梁5には接合構造7を複数設けるため、各接合構造7について同様に上述した補正作業を行い、調整を終えた後は、仮締めされた杭頭キャップ19のフランジプレート部19aと位置調整部21の固定プレート17の締結部(ボルト・ナット)、および基礎梁5のフランジと接合構造7の基礎梁固定プレート9の締結部(ボルト・ナット)を本締めすることにより、鋼管杭3と基礎梁5とを接続する施工を完了する(図13参照)。   As shown in FIG. 12B, in the sixth step, the base beam fixing plate 9 that is screwed onto the ball head bolt 11 is moved in the vertical direction by gripping and turning the neck portion 11d of the ball head bolt 11 with a wrench. Then, the height of the top end face of the foundation beam 5 is adjusted, and if necessary, the above correction is repeated as appropriate. Further, since a plurality of joint structures 7 are provided on one foundation beam 5, the above-described correction work is similarly performed on each joint structure 7, and after the adjustment is finished, the flange plate portion 19a of the temporarily tightened pile head cap 19 is provided. By tightening the fastening portion (bolt / nut) of the fixing plate 17 of the position adjusting portion 21 and the fastening portion (bolt / nut) of the flange of the foundation beam 5 and the foundation beam fixing plate 9 of the joint structure 7, a steel pipe is obtained. The construction for connecting the pile 3 and the foundation beam 5 is completed (see FIG. 13).

以上の接合構造7によれば、鋼管杭3の建て入れ精度が不良で、基準値に対して傾きが大きくても、球座頭ボルト11の頭部11cを支点にして傾けることで補正できる。さらに、位置調整部21のボルト押え外プレート15及びボルト押え内プレート13を相互に回転させることで、横方向の任意の位置に微調整でき、基礎梁5に対して横方向への位置補正を行うことができる。さらに、連結部14の球座頭ボルト11を回転させることで、基礎梁5の高さ方向の微調整を行うことができる。   According to the joint structure 7 described above, even if the steel pipe pile 3 has a poor erection accuracy and has a large inclination with respect to the reference value, it can be corrected by inclining with the head 11c of the ball head bolt 11 as a fulcrum. Further, by rotating the bolt presser outer plate 15 and the bolt presser inner plate 13 of the position adjusting unit 21 to each other, it is possible to finely adjust to an arbitrary position in the lateral direction, and to correct the lateral position with respect to the foundation beam 5. It can be carried out. Further, the base head 5 can be finely adjusted in the height direction by rotating the ball head bolt 11 of the connecting portion 14.

さらに、杭頭キャップ19のフランジプレート部19aの上面19cは平坦なので、球座頭ボルト11の横ズレを補正するために球座頭ボルト11を横にずらす際の抵抗は少なく、横ズレの補正を行い易くなる。
特に、上記接合構造7において、基礎梁5に対して複数の鋼管杭3を仮留めにしたまま基礎梁3や各部品を外すことなく、球座頭ボルト11を横方向に移動させ、また球座頭ボルト11自身を回したり傾けたりするだけで、接合状態の設置誤差を調整することができ、施工上たいへん有利である。
Further, since the upper surface 19c of the flange plate portion 19a of the pile head cap 19 is flat, there is little resistance when the ball head bolt 11 is shifted to correct the lateral displacement of the ball head bolt 11, and the lateral displacement is corrected. It becomes easy.
In particular, in the joint structure 7 described above, the ball head bolt 11 is moved in the lateral direction without removing the foundation beam 3 and each part while temporarily securing the plurality of steel pipe piles 3 to the foundation beam 5, and the ball head The installation error in the joined state can be adjusted simply by turning or tilting the bolt 11 itself, which is very advantageous in terms of construction.

また、本実施形態に係る接合構造7では、基礎梁5に固定された基礎梁固定プレート9に高ナット部9aが設けられ、その雌ねじに球座頭ボルト11の雄ねじ部11aが螺合する構造であるが、球座頭ボルト11の雄ねじ部11aが挿通孔Haに挿通するので、挿通孔Haは小さくなり、ボルト押え内プレート13の強度低下が抑えられて位置調整部21を小型化し易くなる。しかしながら、本発明は、この形態に限定されず、基礎梁固定プレート9に雄ねじを形成した場合には、球座頭ボルト11の代わりに雌ねじを形成した支持軸部を設けることもできる。この場合は、球座頭ボルト11の雄ねじ部11aに比べて、雌ねじを形成する分だけ支持軸部の幅は広がり、支持軸部が挿通する挿通孔Haの孔径を広げる必要がある。   Further, in the joint structure 7 according to the present embodiment, a high nut portion 9a is provided on the base beam fixing plate 9 fixed to the base beam 5, and the male screw portion 11a of the ball seat head bolt 11 is screwed into the female screw. However, since the male threaded portion 11a of the ball head bolt 11 is inserted into the insertion hole Ha, the insertion hole Ha is reduced, the strength reduction of the bolt retainer inner plate 13 is suppressed, and the position adjusting portion 21 is easily reduced in size. However, the present invention is not limited to this configuration, and when a male screw is formed on the foundation beam fixing plate 9, a support shaft portion in which a female screw is formed can be provided instead of the ball head bolt 11. In this case, as compared with the male threaded portion 11a of the ball head bolt 11, the width of the support shaft portion is increased by the amount of forming the female screw, and the hole diameter of the insertion hole Ha through which the support shaft portion is inserted needs to be increased.

さらに、球座頭ボルト11は、六角柱状の首部11dを有するので、レンチなどの工具で首部11dを把持して球座頭ボルト11を簡単に回すことができ、基礎梁固定プレート9を上下させて基礎梁5の上下方向の補正を簡単に実行できる。   Further, since the ball head bolt 11 has a hexagonal columnar neck portion 11d, the ball head bolt 11 can be easily turned by gripping the neck portion 11d with a tool such as a wrench, and the foundation beam fixing plate 9 is moved up and down. The vertical correction of the beam 5 can be easily executed.

さらに、球座頭ボルト11は、頭部11c及び位置調整部21を構成する各プレート13,15,17同士の係り合いによって引き抜きが防止され、その状態で保持される。従って、建築物本体1を傾けようとする力が働いて基礎梁5を引き上げるような力が作用した場合であっても、球座頭ボルト11は引き抜かれず、基礎梁5と鋼管杭3との接続を強固に保持することができる。   Further, the ball head bolt 11 is prevented from being pulled out by the engagement between the plates 13, 15, and 17 constituting the head 11 c and the position adjusting unit 21, and is held in that state. Therefore, even when a force that tilts the building body 1 is applied and a force that pulls up the foundation beam 5 is applied, the ball head bolt 11 is not pulled out, and the connection between the foundation beam 5 and the steel pipe pile 3 is performed. Can be held firmly.

また、本実施形態に係る接合構造7によれば、施工誤差により、基準高さに対して、建築物本体1の基礎の高さ、杭頭高さが合わない場合であっても、鋼管杭3の打ち込みの位置の不揃いや建て入れ寸法の誤差を吸収することができ、基礎梁5のズレを防止しながら基礎梁5を鋼管杭3に容易に接続することができる。   Moreover, according to the joining structure 7 which concerns on this embodiment, even if it is a case where the height of a foundation of a building main body 1 and a pile head height do not match with reference | standard height by construction error, a steel pipe pile Therefore, the foundation beam 5 can be easily connected to the steel pipe pile 3 while preventing the deviation of the foundation beam 5.

以上、本発明をその実施形態に基づき具体的に説明したが、本発明は、上記実施形態に限定されるものではない。例えば、上記の接合構造7では、鋼管杭3側に対して、球座頭ボルト11の球座面11bを向け、基礎梁5側に雄ねじ部11aの先端を向けて設置したが、雌ねじ部を杭頭キャップ19に設けて、接合構造7の構成部材の取り付けの配置を天地逆さまにしてもよい。また、建築物の要素部材としては基礎梁以外の部材であってもよく、さらに、支持部材も鋼管杭に限定されず、他の部材であってもよい。   As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment. For example, in the joint structure 7 described above, the ball seat face 11b of the ball head bolt 11 is directed toward the steel pipe pile 3 side and the tip of the male screw portion 11a is directed to the foundation beam 5 side. It may be provided on the head cap 19 and the arrangement of the constituent members of the joint structure 7 may be turned upside down. Moreover, as an element member of a building, members other than a foundation beam may be sufficient, Furthermore, a support member is not limited to a steel pipe pile, Other members may be sufficient.

また、支持軸部の下端に形成された凸面は、球面の一部に限定されず、場所によって曲率半径が変化する曲面によって形成されていてもよい。   Further, the convex surface formed at the lower end of the support shaft portion is not limited to a part of the spherical surface, and may be formed by a curved surface whose radius of curvature changes depending on the location.

本発明の実施形態に係る接合構造の分解斜視図である。It is a disassembled perspective view of the junction structure concerning the embodiment of the present invention. 本実施形態に係る接合構造の断面図である。It is sectional drawing of the junction structure concerning this embodiment. 球座頭ボルトの斜視図である。It is a perspective view of a ball seat head bolt. 球座頭ボルトの頭部の拡大図である。It is an enlarged view of the head of a ball seat head bolt. 球座頭ボルトの傾きを示す頭部の拡大図である。It is an enlarged view of the head which shows the inclination of a ball seat head bolt. 球座頭ボルト及び調整手段の分解断面図である。It is an exploded sectional view of a ball head bolt and adjusting means. 図2のV−V線に沿った断面図であり、回転調整前を示す図である。It is sectional drawing along the VV line of FIG. 2, and is a figure which shows before rotation adjustment. 図7に対応する断面図であり、回転調整後を示す図である。It is sectional drawing corresponding to FIG. 7, and is a figure which shows after rotation adjustment. 接合構造の作用を説明するための側面図であり、(a)は基礎梁の転倒の調整を示す図、(b)は横方向の位置調整を示す図、(c)は高さ方向の調整を示す図である。It is a side view for demonstrating the effect | action of joining structure, (a) is a figure which shows adjustment of the fall of a foundation beam, (b) is a figure which shows position adjustment of a horizontal direction, (c) is adjustment of a height direction FIG. 本実施形態に係る接合構造を利用した施工の手順を示し、(a)は第1工程を示す側面図であり、(b)は第2工程を示す側面図である。The construction procedure using the joint structure according to the present embodiment is shown, (a) is a side view showing the first step, (b) is a side view showing the second step. 本実施形態に係る接合構造を利用した施工の手順を示し、(a)は第3工程を示す側面図であり、(b)は第4工程を示す側面図である。The construction procedure using the joint structure according to the present embodiment is shown, (a) is a side view showing the third step, (b) is a side view showing the fourth step. 本実施形態に係る接合構造を利用した施工の手順を示し、(a)は第5工程を示す側面図であり、(b)は第6工程を示す側面図である。The construction procedure using the joint structure according to the present embodiment is shown, (a) is a side view showing the fifth step, (b) is a side view showing the sixth step. 杭基礎と上部構造体を示す側面図である。It is a side view which shows a pile foundation and an upper structure.

符号の説明Explanation of symbols

3…鋼管杭(基礎杭、支持部材)、5…基礎梁(要素部材)、7…接合構造、9…基礎梁固定プレート(要素受け部)、9a…高ナット部(雌ねじ部)、11…球座頭ボルト(支持軸部)、11a…球座頭ボルトの雄ねじ部、11b…球座面(凸面)、11c…球座頭ボルトの頭部(支承端)、11d…首部、11e…頭部の側面(張出し部)、13…ボルト押え内プレート(小径プレート)、13a…ボルト押え内プレートの内周面(支持軸抜け止め部)、13b…ボルト押え内プレートの外周面(小径プレートの周縁)、14…連結部、15…ボルト押え外プレート(大径プレート)、15a…ボルト押え外プレートの内周面(小径プレート抜け止め部)、15b…ボルト押え外プレートの外周面(大径プレートの周縁)、17…固定プレート、17a…固定プレートの内周面(大径プレート抜け止め部)、19…杭頭キャップ(台座部)、19c…杭頭キャップの上面(受け面)、21…位置調整部(固定手段)、Ha…挿通孔、d3…挿通孔の上端側の孔径、d4…挿通孔の下端側の孔径、C2…ボルト押え外プレートの中心、C3…第1装着孔の中心、C4…ボルト押え内プレートの中心、C5…挿通孔の中心、Hb…第1装着孔、Hc…第2装着孔、L…軸線。   3 ... Steel pipe pile (foundation pile, support member), 5 ... Foundation beam (element member), 7 ... Joining structure, 9 ... Foundation beam fixing plate (element receiving part), 9a ... High nut part (female thread part), 11 ... Ball seat head bolt (support shaft portion), 11a: male threaded portion of the ball seat head bolt, 11b ... Ball seat surface (convex surface), 11c ... Head of ball seat head bolt (support end), 11d ... neck, 11e ... side of head (Overhang portion), 13 ... bolt retainer inner plate (small diameter plate), 13a ... bolt retainer inner plate inner peripheral surface (support shaft retaining portion), 13b ... bolt retainer inner plate outer peripheral surface (periphery of small diameter plate), 14 ... Connection part, 15 ... Bolt press outer plate (large diameter plate), 15a ... Bolt press outer plate inner peripheral surface (small diameter plate retaining part), 15b ... Bolt press outer plate outer peripheral surface (periphery of large diameter plate) ), 17 ... Fixed plug 17a ... inner peripheral surface of fixing plate (large diameter plate retaining part), 19 ... pile head cap (pedestal part), 19c ... upper surface (receiving surface) of pile head cap, 21 ... position adjusting part (fixing means) ), Ha ... insertion hole, d3 ... hole diameter on the upper end side of the insertion hole, d4 ... hole diameter on the lower end side of the insertion hole, C2 ... center of the bolt presser outer plate, C3 ... center of the first mounting hole, C4 ... in the bolt presser Center of plate, C5: center of insertion hole, Hb: first mounting hole, Hc: second mounting hole, L: axis.

Claims (7)

建築物を構成する要素部材と、前記要素部材を支える支持部材とを接続する接合構造において、
前記支持部材に固定される台座部と、
一方の端部に支承端が形成され、その支承端が前記台座部に支承される支持軸部と、
前記支持軸部の前記一方の端部を前記台座部に固定する固定手段と、
前記支持軸部の他方の端部と前記要素部材とを連結する要素受け部と、を備え、
前記支持軸部の前記一方の端部には、径方向に張り出した張出し部が形成され、
前記固定手段は、前記支持軸部の前記他方の端部が挿通する挿通孔と前記張出し部に当接して前記支持軸部を係止する支持軸抜け止め部と、を有し、
前記挿通孔は、前記支承端を支点にして前記支持軸部が揺動自在の孔径を有し、
前記支承端には、前記台座部に当接する凸面が形成されていることを特徴とする接合構造。
In the joint structure for connecting the element member constituting the building and the support member supporting the element member,
A pedestal fixed to the support member;
A support end is formed at one end, and the support end is supported by the pedestal,
Fixing means for fixing the one end portion of the support shaft portion to the pedestal portion;
An element receiving portion for connecting the other end portion of the support shaft portion and the element member;
A projecting portion projecting in the radial direction is formed at the one end portion of the support shaft portion,
The fixing means includes an insertion hole through which the other end of the support shaft portion is inserted, and a support shaft retaining portion that contacts the overhang portion and locks the support shaft portion.
The insertion hole has a hole diameter that allows the support shaft portion to swing with the support end as a fulcrum.
The joint structure according to claim 1, wherein a convex surface that contacts the pedestal portion is formed at the support end.
前記固定手段は、前記挿通孔及び前記支持軸抜け止め部が形成された円形の小径プレートと、前記小径プレートが回転自在に装着される円形の第1装着孔が形成された円形の大径プレートと、前記大径プレートが回転自在に装着される円形の第2装着孔が形成された固定プレートと、を有し、
前記固定手段は、前記台座部に一方の端部が支承される前記支持軸部の他方の端部側が前記小径プレートの挿通孔、前記大径プレートの第1装着孔、及び前記固定プレートの第2装着孔を貫通し、前記小径プレートの挿通孔に大径プレートが装着され、前記大径プレートの前記第1装着孔に前記固定プレートが装着され、
前記固定プレートは前記台座部に固定され、前記大径プレートには、前記小径プレートの周縁に当接して前記小径プレートを係止する小径プレート抜け止め部が設けられ、前記固定プレートには、前記大径プレートの周縁に当接して前記大径プレートを係止する大径プレート抜け止め部が設けられ、
前記支持軸部の軸芯と一致する前記挿通孔の中心は、前記小径プレートの中心から偏心しており、前記第1装着孔の中心は、前記大径プレートの中心から偏心していることを特徴とする請求項1記載の接合構造。
The fixing means includes a circular small-diameter plate in which the insertion hole and the support shaft retaining portion are formed, and a circular large-diameter plate in which a circular first mounting hole in which the small-diameter plate is rotatably mounted is formed. And a fixed plate formed with a circular second mounting hole on which the large-diameter plate is rotatably mounted,
The fixing means includes an insertion hole for the small-diameter plate, a first mounting hole for the large-diameter plate, and a first mounting hole for the fixed plate on the other end side of the support shaft portion on which one end portion is supported by the pedestal portion 2 through the mounting hole, the large-diameter plate is mounted in the insertion hole of the small-diameter plate, the fixed plate is mounted in the first mounting hole of the large-diameter plate,
The fixed plate is fixed to the pedestal, and the large-diameter plate is provided with a small-diameter plate retaining portion that contacts the periphery of the small-diameter plate and engages the small-diameter plate. A large-diameter plate retaining portion that contacts the periphery of the large-diameter plate and engages the large-diameter plate is provided,
The center of the insertion hole that coincides with the axis of the support shaft portion is eccentric from the center of the small-diameter plate, and the center of the first mounting hole is eccentric from the center of the large-diameter plate. The joining structure according to claim 1.
前記支持軸部の前記他方の端部と前記要素受け部とは連結部により連結され、前記支持軸部と前記要素受け部とは、前記連結部によって前記支持軸部の軸線に沿って相対的に進退移動自在であることを特徴とする請求項1または2記載の接合構造。   The other end portion of the support shaft portion and the element receiving portion are connected by a connecting portion, and the support shaft portion and the element receiving portion are relative to each other along the axis of the support shaft portion by the connecting portion. The joint structure according to claim 1, wherein the joint structure is freely movable forward and backward. 前記連結部は、前記支持軸部の前記他方の端部に形成された雄ねじ部と、前記要素受け部に形成された雌ねじ部と、を有し、
前記挿通孔には、前記雄ねじ部が挿通することを特徴とする請求項3記載の接合構造。
The connecting portion has a male screw portion formed at the other end portion of the support shaft portion, and a female screw portion formed at the element receiving portion,
The joint structure according to claim 3, wherein the male screw portion is inserted through the insertion hole.
前記支持軸部は、前記軸線と同軸線となる角柱状の首部を有することを特徴とする請求項3または4記載の接合構造。   The joining structure according to claim 3, wherein the support shaft portion has a prismatic neck portion that is coaxial with the axis. 前記台座部は、前記支承端の前記凸面が当接する平坦な受け面を有することを特徴とする請求項1〜5のいずれか一項記載の接合構造。   The joint structure according to claim 1, wherein the pedestal portion has a flat receiving surface with which the convex surface of the support end abuts. 前記要素部材は前記建築物の基礎梁であり、前記支持部材は前記基礎梁を支える基礎杭であることを特徴とする請求項1〜6のいずれか一項記載の接合構造。

The joint structure according to claim 1, wherein the element member is a foundation beam of the building, and the support member is a foundation pile that supports the foundation beam.

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JP2011174274A (en) * 2010-02-24 2011-09-08 Force One Holdings Kk Fitting for building foundation, and building foundation structure
GB2488166A (en) * 2011-02-18 2012-08-22 Francis & Lewis Internat Ltd Girder grillage frame with pile boxes which are variably spaceable
JP2013060711A (en) * 2011-09-12 2013-04-04 Chiyoda Geotech Co Ltd Foundation structure for solar cell module or solar cell array frame
US20140356076A1 (en) * 2013-05-29 2014-12-04 Glen G. Hale Pile cap connectors
JP2015040443A (en) * 2013-08-23 2015-03-02 大和ハウス工業株式会社 Joining structure of solar battery stand and steel pipe pile and pile head cap metallic material
JP2015132088A (en) * 2014-01-10 2015-07-23 有限会社 ヤブタ Connection member, and structure for connecting foundation pile and support together
JP2016070047A (en) * 2014-09-30 2016-05-09 株式会社内藤ハウス Junction structure between pile and building frame, and attachment
JP3205992U (en) * 2016-06-14 2016-08-25 三協フロンテア株式会社 Unit house foundation height adjustment mechanism
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JP2011174274A (en) * 2010-02-24 2011-09-08 Force One Holdings Kk Fitting for building foundation, and building foundation structure
GB2488166A (en) * 2011-02-18 2012-08-22 Francis & Lewis Internat Ltd Girder grillage frame with pile boxes which are variably spaceable
JP2013060711A (en) * 2011-09-12 2013-04-04 Chiyoda Geotech Co Ltd Foundation structure for solar cell module or solar cell array frame
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JP2015132088A (en) * 2014-01-10 2015-07-23 有限会社 ヤブタ Connection member, and structure for connecting foundation pile and support together
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