JP6449079B2

JP6449079B2 - Building

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Publication number: JP6449079B2
Application number: JP2015066834A
Authority: JP
Inventors: 輝久甲田; 伊藤　彰; 彰伊藤; 由西成田; 平野　秀和; 秀和平野; 裕一平田; 健治田野; 小田　稔; 稔小田; 覚貫洞; 翔太中野; 絵里高橋
Original assignee: Sumitomo Mitsui Construction Co Ltd
Current assignee: Sumitomo Mitsui Construction Co Ltd
Priority date: 2015-03-27
Filing date: 2015-03-27
Publication date: 2019-01-09
Anticipated expiration: 2035-03-27
Also published as: JP2016186184A

Description

本発明は、地中に埋設されてなる複数の鉄筋コンクリート製の基礎杭と、該複数の基礎杭の上端に接合される鉄筋コンクリート製の基礎梁と、を備えた建築物に関する。 The present invention relates to a building including a plurality of reinforced concrete foundation piles embedded in the ground and a reinforced concrete foundation beam joined to the upper ends of the plurality of foundation piles.

従来、基礎杭等を備えた建築物については種々の構造のものが提案されている（例えば、特許文献１及び２参照）。 Conventionally, the thing of various structures is proposed about the building provided with the foundation pile etc. (for example, refer to patent documents 1 and 2).

図５（ａ）は、杭主筋の配列構造の従来例を示す模式図であり、同図（ｂ）は、該杭主筋と梁主筋の相対位置関係を示す模式図である。これらの図中の符号１０２は、地中に埋設されてなる鉄筋コンクリート製の基礎杭を示し、符号Ｄは、該基礎杭１０２に埋設されてなる杭主筋を示し、符号Ｅは、基礎梁（不図示）に埋設されてなる梁主筋を示している。 Fig.5 (a) is a schematic diagram which shows the prior art example of the arrangement | sequence structure of a pile main reinforcement, The figure (b) is a schematic diagram which shows the relative positional relationship of this pile main reinforcement and a beam main reinforcement. In these drawings, reference numeral 102 denotes a reinforced concrete foundation pile embedded in the ground, reference numeral D denotes a pile main reinforcement embedded in the foundation pile 102, and reference numeral E denotes a foundation beam (non-beam). The main beam bars embedded in the figure are shown.

特開２００６−３７４９２号公報JP 2006-37492 A 特許第３４４８７２５号公報Japanese Patent No. 3448725

ところで、前記基礎杭１０２側の杭主筋Ｄは、図５（ａ）に例示するように前記基礎杭１０２の外周面に沿うように円周状に配列されているため、前記杭主筋Ｄ，Ｄの離間間隔（つまり、隣接する２本の杭主筋Ｄ，Ｄについての前記長手方向ｘの間隔や、前記幅方向ｙの間隔）は一定ではなく、杭芯から端部に行くほど狭くなっていた。したがって、前記梁主筋Ｅが、同図（ｂ）に例示するように該基礎梁の長手方向ｘ（又は幅方向ｙ）に少しでもずれてしまうと、前記杭主筋Ｄに干渉してしまうという問題があった。 By the way, since the pile main reinforcement D by the side of the said foundation pile 102 is arrange | positioned circumferentially so that the outer peripheral surface of the said foundation pile 102 may be followed so that it may illustrate to Fig.5 (a), the said pile main reinforcement D, D. The spacing distance (that is, the spacing in the longitudinal direction x and the spacing in the width direction y for the two adjacent pile main bars D, D) is not constant and narrows from the pile core toward the end. . Therefore, if the beam main bar E is slightly displaced in the longitudinal direction x (or the width direction y) of the foundation beam as illustrated in FIG. was there.

本発明は、上述の問題を解消することのできる建築物を提供することを目的とするものである。 The object of the present invention is to provide a building that can solve the above-mentioned problems.

請求項１に係る発明は、図１に例示するものであって、地中に埋設されてなると共に略円柱状で鉄筋コンクリート製の複数の基礎杭（２）と、該複数の基礎杭（２）の上端に接合される鉄筋コンクリート製の基礎梁（３）と、を備えた建築物（１）において、
該基礎梁（３）の長手方向（ｘ）を“梁長手方向”とし、該基礎梁（３）の幅方向（図２（ａ）（ｂ）及び図３（ａ）（ｂ）の符号ｙ参照）を“梁幅方向”とした場合に、
前記基礎杭（２）には複数の杭主筋（Ｄ，…）が略円周状に配列されて埋設され、
鉛直方向に延設された状態で該梁長手方向（ｘ）に沿って並設された複数の第１接合筋（図２（ａ）（ｂ）及び図３（ａ）（ｂ）の符号Ｂｘ_１１，…，Ｂｘ_２１，…参照）と、鉛直方向に延設された状態で該梁幅方向（ｙ）に沿って並設された複数の第２接合筋（図２（ａ）（ｂ）及び図３（ａ）（ｂ）の符号Ｂｙ_１１，…，Ｂｙ_２１，…参照）とが、前記基礎杭（２）と前記基礎梁（３）とを接続するように少なくともそれらの境界部分（図１の符号Ｃ参照）に埋設されており、
前記複数の第１接合筋（Ｂｘ _１１，…，Ｂｘ _２１，…）のうち、梁長手方向両端にある第１接合筋は、それぞれ前記杭主筋の配置位置にまで達しており、
前記複数の第２接合筋（Ｂｙ _１１，…，Ｂｙ _２１，…）のうち、梁幅方向両端にある第２接合筋は、それぞれ前記杭主筋の配置位置にまで達している、
ことを特徴とする。 The invention according to claim 1 is illustrated in FIG. 1, and is embedded in the ground and is substantially cylindrical and made of reinforced concrete, and the plurality of foundation piles (2). In a building (1) comprising a reinforced concrete foundation beam (3) joined to the upper end of
The longitudinal direction (x) of the foundation beam (3) is defined as the “beam longitudinal direction”, and the width direction of the foundation beam (3) (the symbol y in FIGS. 2A and 2B and FIGS. 3A and 3B). Reference) is “beam width direction”.
In the foundation pile (2), a plurality of pile main bars (D,...) Are arranged in a substantially circumferential shape and embedded.
A plurality of first joint bars (reference symbols Bx in FIGS. 2A and 2B and FIGS. 3A and 3B) arranged side by side along the beam longitudinal direction (x) in a state of extending in the vertical direction. ₁₁ ,..., Bx ₂₁ ,...) And a plurality of second joining bars arranged in parallel along the beam width direction (y) in a state of extending in the vertical direction (FIGS. 2A and 2B). And the reference signs By ₁₁ ,..., By ₂₁ ,... In FIGS. 3 (a) and 3 (b), connect at least the boundary portions (2) and the foundation beams (3) so as to connect them. is embedded by reference numeral C) of FIG. 1,
Of the plurality of first joining bars (Bx ₁₁ ,..., Bx ₂₁ ,...), The first joining bars at both ends in the beam longitudinal direction reach the arrangement positions of the pile main bars,
Of the plurality of second joining bars (By ₁₁ ,..., By ₂₁ ,...), The second joining bars at both ends in the beam width direction reach the arrangement positions of the pile main bars, respectively.
It is characterized by that.

請求項２に係る発明は、請求項１に係る発明において、前記複数の第１接合筋（Ｂｘ_１１，…，Ｂｘ_２１，…）が前記梁長手方向（ｘ）に沿って略等間隔に配置され、前記複数の第２接合筋（Ｂｙ_１１，…，Ｂｙ_２１，…）は前記梁幅方向（ｙ）に沿って略等間隔に配置されたことを特徴とする。 The invention according to claim 2 is the invention according to claim 1, wherein the plurality of first joining bars (Bx ₁₁ ,..., Bx ₂₁ ,...) Are arranged at substantially equal intervals along the beam longitudinal direction (x). The plurality of second joining bars (By ₁₁ ,..., By ₂₁ ,...) Are arranged at substantially equal intervals along the beam width direction (y).

請求項３に係る発明は、請求項１又は２に係る発明において、前記複数の第１接合筋（Ｂｘ_１１，…，Ｂｘ_２１，…）が少なくとも２列に配列されると共に、前記複数の第２接合筋（Ｂｙ_１１，…，Ｂｙ_２１，…）も少なくとも２列に配列され、
該２列に配列された第１接合筋（Ｂｘ_１１，…，Ｂｘ_２１，…）と該２列に配列された第２接合筋（Ｂｙ_１１，…，Ｂｙ_２１，…）は略矩形状に配列されたことを特徴とする。 The invention according to claim 3 is the invention according to claim 1 or 2, wherein the plurality of first joining bars (Bx ₁₁ ,..., Bx ₂₁ ,...) Are arranged in at least two rows, and Two joining muscles (By ₁₁ ,..., By ₂₁ ,...) Are also arranged in at least two rows,
The first joint bars (Bx ₁₁ ,..., Bx ₂₁ ,...) Arranged in the two rows and the second joint bars (By ₁₁ ,..., By ₂₁ ,...) Arranged in the two rows are substantially rectangular. It is characterized by being arranged.

請求項４に係る発明は、請求項１乃至３のいずれか１項に記載の発明において、前記複数の杭主筋（Ｄ，…）の少なくとも一部は、前記第１及び第２接合筋（Ｂｘ_１１，…）よりも細い鉄筋であることを特徴とする。 The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein at least a part of the plurality of pile main bars (D,...) Is the first and second joint bars (Bx). ₁₁ ,...).

請求項５に係る発明は、請求項１乃至３のいずれか１項に記載の発明において、図４に例示するように、
前記複数の杭主筋（Ｄ，…）を“埋設杭主筋”とし、該埋設杭主筋（Ｄ，…）の内の一部の杭主筋（Ｄ０，…）であって前記基礎杭（２）の側から前記基礎梁（３）の側に突設される該杭主筋（Ｄ０，…）を“突設杭主筋”とした場合に、
該突設杭主筋（Ｄ０，…）どうしの間隔（Ｗ０）が前記埋設杭主筋（Ｄ，…）どうしの間隔（Ｗ１）よりも広くなるように、該突設杭主筋（Ｄ０，…）の総数が前記埋設杭主筋（Ｄ，…）の総数よりも少なく設定されたことを特徴とする。
The invention according to claim 5 is the invention according to any one of claims 1 to 3, as illustrated in FIG.
The plurality of pile main bars (D,...) Are referred to as “buried pile main bars”, and some of the pile main bars (D0,...) Of the buried pile main bars (D,...) When the pile main bars (D0,.
Of the protruding pile main bars (D0,...) So that the interval (W0) between the protruding pile main bars (D0,...) Is wider than the interval (W1) between the buried pile main bars (D,...). The total number is set to be smaller than the total number of buried pile main bars (D,...).

請求項６に係る発明は、請求項５に記載の発明において、前記突設杭主筋（Ｄ０，…）は、前記第１及び第２接合筋（Ｂｘ_１１，…）よりも細い鉄筋であることを特徴とする。 It invention according to claim 6, in the invention described in claim 5, wherein the projecting pile main reinforcement (D0, ...), the first and second bonding muscle (Bx _{11, ...)} are thin reinforcing bars than It is characterized by.

なお、括弧内の番号などは、図面における対応する要素を示す便宜的なものであり、従って、本記述は図面上の記載に限定拘束されるものではない。 Note that the numbers in parentheses are for the sake of convenience indicating the corresponding elements in the drawings, and therefore the present description is not limited to the descriptions on the drawings.

請求項１に係る発明によれば、前記第１接合筋及び前記第２接合筋は前記梁長手方向及び前記梁幅方向に沿うように配置されているため、前記基礎杭と前記基礎梁との相対的な位置関係が多少ずれたとしてもそれらの接合筋が梁主筋と干渉するおそれを低減することができる。 According to the first aspect of the present invention, since the first joint bar and the second joint bar are arranged along the beam longitudinal direction and the beam width direction, the foundation pile and the foundation beam Even if the relative positional relationship is slightly deviated, the possibility that the joint bars interfere with the beam main bars can be reduced.

請求項２及び３に係る発明によれば、前記接合筋が梁主筋と干渉するおそれをより一層低減することができる。 According to the invention which concerns on Claim 2 and 3, the possibility that the said joining bar | burr may interfere with a beam main bar | burr can be reduced further.

請求項４に係る発明によれば、前記杭主筋が梁主筋と干渉するおそれを低減することができる。 According to the invention which concerns on Claim 4, the possibility that the said pile main reinforcement will interfere with a beam main reinforcement can be reduced.

請求項５に係る発明によれば、前記突設杭主筋が梁主筋と干渉するおそれを低減することができる。 According to the invention which concerns on Claim 5, the possibility that the said protruding pile main bar may interfere with a beam main bar can be reduced.

請求項６に係る発明によれば、前記突設杭主筋が梁主筋と干渉するおそれをさらに低減することができる。 According to the invention which concerns on Claim 6, the possibility that the said protruding pile main bar may interfere with a beam main bar can further be reduced.

図１は、本発明に係る建築物の構造の一例を示す側面図である。FIG. 1 is a side view showing an example of the structure of a building according to the present invention. 図２（ａ）は、杭主筋及び接合筋の配列構造の一例を示す分解斜視図であり、同図（ｂ）は、杭主筋及び接合筋の配置位置等を示す斜視図である。FIG. 2A is an exploded perspective view showing an example of an arrangement structure of pile main bars and joint bars, and FIG. 2B is a perspective view showing arrangement positions of the pile main bars and joint bars. 図３（ａ）は、図２（ｂ）のＡ−Ａ断面図であり、同図（ｂ）は、杭主筋及び接合筋の配列構造の他の例を示す断面図である。Fig.3 (a) is AA sectional drawing of FIG.2 (b), The same figure (b) is sectional drawing which shows the other example of the arrangement structure of a pile main reinforcement and a joint reinforcement. 図４は、基礎杭の構成の他の例を示す斜視図である。FIG. 4 is a perspective view showing another example of the configuration of the foundation pile. 図５（ａ）は、杭主筋の配列構造の従来例を示す模式図であり、同図（ｂ）は、該杭主筋と梁主筋の相対位置関係を示す模式図であり、同図（ｃ）は、梁主筋がずれた場合の問題点を説明するための模式図である。Fig.5 (a) is a schematic diagram which shows the prior art example of the arrangement | sequence structure of a pile main reinforcement, The figure (b) is a schematic diagram which shows the relative positional relationship of this pile main reinforcement and a beam main reinforcement, FIG. ) Is a schematic diagram for explaining a problem when the beam main bar is displaced.

以下、図１乃至図４に沿って、本発明の実施の形態について説明する。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

本発明に係る建築物は、図１に符号１で例示するものであって、
・地中に埋設されてなると共に略円柱状で鉄筋コンクリート製の複数の基礎杭２と、
・該複数の基礎杭２の上端（杭頭）に接合される鉄筋コンクリート製の基礎梁３と、
を備えている。そして、該基礎梁３の長手方向ｘを“梁長手方向”とし、該基礎梁３の幅方向（図２（ａ）（ｂ）及び図３（ａ）（ｂ）の符号ｙ参照）を“梁幅方向”とした場合に、
・鉛直方向ｚに延設された状態で前記梁長手方向ｘに沿って配置（並設）された複数の第１接合筋Ｂｘ_１１，…，Ｂｘ_２１，…と、
・鉛直方向ｚに延設された状態で前記梁幅方向ｙに沿って配置（並設）された複数の第２接合筋Ｂｙ_１１，…，Ｂｙ_２１，…と
が前記基礎杭２と前記基礎梁３の境界部分（図１にて符号Ｃで示す部分であって、該基礎杭２に近接する該基礎梁３の部分Ｃ１と、該基礎梁３に近接する該基礎杭２の部分Ｃ２の両方）に埋設されて該基礎杭２と該基礎梁３とを接続（接合）するように構成されている。 The building according to the present invention is illustrated by reference numeral 1 in FIG.
A plurality of foundation piles 2 that are embedded in the ground and are substantially cylindrical and made of reinforced concrete;
A reinforced concrete foundation beam 3 joined to the upper ends (pile heads) of the plurality of foundation piles 2;
It has. Then, the longitudinal direction x of the foundation beam 3 is defined as the “beam longitudinal direction”, and the width direction of the foundation beam 3 (refer to reference sign y in FIGS. 2A and 2B and FIGS. 3A and 3B). “Beam width direction”
A plurality of first joining bars Bx ₁₁ ,..., Bx ₂₁ ,... Arranged (arranged) along the beam longitudinal direction x in a state extending in the vertical direction z;
A plurality of second joint bars By ₁₁ ,..., By ₂₁ ,... Arranged along the beam width direction y in a state of extending in the vertical direction z are the foundation pile 2 and the foundation. The boundary portion of the beam 3 (the portion indicated by C in FIG. 1, the portion C1 of the foundation beam 3 adjacent to the foundation pile 2 and the portion C2 of the foundation pile 2 adjacent to the foundation beam 3) And the foundation pile 2 and the foundation beam 3 are connected (joined).

本発明によれば、前記第１接合筋Ｂｘ_１１，…，Ｂｘ_２１，…及び前記第２接合筋Ｂｙ_１１，…，Ｂｙ_２１，…は前記梁長手方向ｘ及び前記梁幅方向ｙに沿うように配置されているため、図５（ａ）〜（ｃ）に示した従来構造のものに比べ、前記基礎杭２と前記基礎梁３との相対的な位置関係が多少ずれたとしてもそれらの接合筋Ｂｘ_１１，…，Ｂｘ_２１，…及びＢｙ_１１，…，Ｂｙ_２１，…が梁主筋Ｅと干渉するおそれを低減することができる。 According to the present invention, the first joint bars Bx ₁₁ , ..., Bx ₂₁ , ... and the second joint bars By ₁₁ , ..., By ₂₁ , ... are along the beam longitudinal direction x and the beam width direction y. Therefore, even if the relative positional relationship between the foundation pile 2 and the foundation beam 3 is slightly deviated from that of the conventional structure shown in FIGS. bonding muscle _{_{Bx 11, ..., Bx 21,}} ... and _{_{by 11, ..., by 21,}} ... can be reduced may interfere with the beam main reinforcement E.

この場合、図２（ａ）に例示するように、前記複数の第１接合筋Ｂｘ_１１，…，Ｂｘ_２１，…は該梁長手方向ｘに沿って略等間隔に配置すると良く、前記複数の第２接合筋Ｂｙ_１１，…，Ｂｙ_２１，…は該梁幅方向ｙに沿って略等間隔に配置すると良い。そのようにした場合には、前記接合筋Ｂｘ_１１，…，Ｂｘ_２１，…及びＢｙ_１１，…，Ｂｙ_２１，…が梁主筋Ｅと干渉するおそれをより一層低減することができる。 In this case, as illustrated in FIG. 2A, the plurality of first joining bars Bx ₁₁ ,..., Bx ₂₁ ,... May be arranged at substantially equal intervals along the beam longitudinal direction x. The second joint bars By ₁₁ ,..., By ₂₁ ,... Are preferably arranged at substantially equal intervals along the beam width direction y. In such a case, the bonding muscle _{_{Bx 11, ..., Bx 21,}} ... and _{_{By 11, ..., By 21,}} ... can be further reduced may interfere with the beam main reinforcement E.

なお、前記複数の第１接合筋Ｂｘ_１１，…，Ｂｘ_２１，…は少なくとも２列に配列し、前記複数の第２接合筋Ｂｙ_１１，…，Ｂｙ_２１，…も少なくとも２列に配列して、該２列に配列された第１接合筋Ｂｘ_１１，…及びＢｘ_２１，…と該２列に配列された第２接合筋Ｂｙ_１１，…及びＢｙ_２１，…は略矩形状に配列するようにすると良い（図２（ａ）参照）。また、図２（ｂ）に例示するように、第１接合筋Ｂｘ_３１，…，Ｂｘ_４１，…及び第２接合筋Ｂｙ_３１，…，Ｂｙ_４１，…を３列以上配列して略碁盤の目状に配置するようにしても良い。さらに、図３（ｂ）にて符号Ｄで示す位置には、杭主筋よりも細い鉄筋（補助筋）を粗い間隔で（つまり、梁主筋を配列するピッチよりも大きいピッチで）配置するようにすると良い。 Incidentally, the plurality of first bonding muscle _{_{Bx 11, ..., Bx 21,}} ... are arranged in at least two rows, said plurality of second joint muscles _{_{By 11, ..., By 21,}} ... be arranged in at least two rows The first joining bars Bx ₁₁ ,... And Bx ₂₁ ,... Arranged in the two rows and the second joining bars By ₁₁ ,... And By ₂₁ , arranged in the two rows are arranged in a substantially rectangular shape. (See FIG. 2A). Further, as illustrated in FIG. 2 (b), the first bonding muscle _Bx 31, ..., _{Bx 41,} ... and the second bonding muscle _{By A} 31, ..., _{By A 41,} a substantially checkerboard by arranging ... three or more rows It may be arranged in a grid. Further, in the position indicated by reference sign D in FIG. 3B, reinforcing bars (auxiliary bars) thinner than the pile main bars are arranged at rough intervals (that is, at a pitch larger than the pitch at which the beam main bars are arranged). Good.

一方、図２（ａ）及び（ｂ）に例示するように複数の杭主筋Ｄ，…を、鉛直方向ｚに延設すると共に略円周状に配列させた状態で前記基礎杭２に埋設しておくと良い。これらの杭主筋Ｄ，…は前記基礎杭２の上端２ａから突出しないようにしても良いが、図４に例示するように一部の杭主筋Ｄ０，…を前記基礎梁２の上端２ａから突出させるようにしても良い。この場合、前記複数の杭主筋Ｄ，…の全部又は少なくとも一部は、前記第１及び第２接合筋Ｂｘ_１１，…よりも細い鉄筋であるようにすると良い。ここで、前記複数の杭主筋Ｄ，…を“埋設杭主筋”とし、該埋設杭主筋Ｄ，…の内の一部の杭主筋Ｄ０，…であって前記基礎杭２の側から前記基礎梁３の側に突設される該杭主筋Ｄ０，…を“突設杭主筋”とした場合に、該突設杭主筋Ｄ０，…どうしの間隔Ｗ０が前記埋設杭主筋Ｄ，…どうしの間隔Ｗ１よりも広くなるように、該突設杭主筋Ｄ０，…の総数を前記埋設杭主筋Ｄ，…の総数よりも少なく設定するようにすると良い。そのようにした場合には、前記突設杭主筋Ｄ０，…が梁主筋Ｅと干渉するおそれを低減することができる。この場合、前記突設杭主筋Ｄ０，…は、前記第１及び第２接合筋よりも細い鉄筋であるようにすると良い。そのようにした場合には、該突設杭主筋Ｄ０，…が前記梁主筋Ｅと干渉するおそれをさらに低減することができる。なお、図４においては、各杭主筋Ｄの配置位置を明確に示すために前記第１及び第２接合筋の図示を省略している。 On the other hand, as illustrated in FIGS. 2 (a) and 2 (b), a plurality of pile main bars D,... Are embedded in the foundation pile 2 while extending in the vertical direction z and arranged in a substantially circumferential shape. It is good to keep. These pile main bars D may not protrude from the upper end 2a of the foundation pile 2, but some of the pile main bars D0, ... protrude from the upper end 2a of the foundation beam 2 as illustrated in FIG. You may make it let it. In this case, it is preferable that all or at least a part of the plurality of pile main bars D,... Be rebars thinner than the first and second joint bars Bx ₁₁ ,. Here, the plurality of pile main bars D,... Are “buried pile main bars”, and some of the pile main bars D0,... Of the buried pile main bars D,. When the pile main bars D0,... Projecting on the 3 side are defined as "projected pile main bars", the interval W0 between the projecting pile main bars D0, ... is the distance W1 between the buried pile main bars D, ... It is preferable to set the total number of the projecting pile main bars D0,... Smaller than the total number of the buried pile main bars D,. In such a case, the possibility that the protruding pile main bars D0,... Interfere with the beam main bars E can be reduced. In this case, it is preferable that the protruding pile main bars D0,... Are rebars thinner than the first and second joint bars. In such a case, the possibility that the projecting pile main bars D0,... Interfere with the beam main bars E can be further reduced. In addition, in FIG. 4, in order to show clearly the arrangement position of each pile main reinforcement D, illustration of the said 1st and 2nd joint reinforcement is abbreviate | omitted.

１建築物
２基礎杭
３基礎梁
Ｂｘ_１１，…，Ｂｘ_２１，… 第１接合筋
Ｂｙ_１１，…，Ｂｙ_２１，… 第２接合筋
Ｃ基礎杭と基礎梁との境界部分
Ｄ，… 杭主筋（埋設杭主筋）
Ｄ０… 杭主筋（突設杭主筋）
ｘ梁長手方向
ｙ梁幅方向

1 building 2 foundation pile 3 footing beams _Bx 11, ..., _{Bx 21,} ... first bonding muscle _{By A} 11, ..., _{By A 21,} ... boundary portion D between the second bonding muscle C foundation pile and footing beams, ... Pile main reinforcement (Built main pile)
D0 ... Pile main reinforcement (protruding pile main reinforcement)
x Beam longitudinal direction y Beam width direction

Claims

In a building comprising a plurality of foundation piles that are buried in the ground and are substantially cylindrical and made of reinforced concrete, and foundation beams made of reinforced concrete joined to the upper ends of the plurality of foundation piles,
When the longitudinal direction of the foundation beam is “beam longitudinal direction” and the width direction of the foundation beam is “beam width direction”,
In the foundation pile, a plurality of pile main bars are arranged and embedded in a substantially circumferential shape,
A plurality of first joint bars juxtaposed along the beam longitudinal direction in a state extending in the vertical direction, and a plurality of juxtapositions along the beam width direction in a state extending in the vertical direction A second joint bar is embedded in at least the boundary portion so as to connect the foundation pile and the foundation beam ,
Of the plurality of first joining bars, the first joining bars at both ends in the beam longitudinal direction have reached the arrangement positions of the pile main bars, respectively.
Of the plurality of second joint bars, the second joint bars at both ends in the beam width direction have reached the arrangement positions of the pile main bars, respectively.
A building characterized by that.

The plurality of first joining bars are arranged at substantially equal intervals along the beam longitudinal direction, and the plurality of second joining bars are arranged at substantially equal intervals along the beam width direction,
The building according to claim 1.

The plurality of first joining bars are arranged in at least two rows, and the plurality of second joining bars are also arranged in at least two rows,
The first joint muscles arranged in the two rows and the second joint muscles arranged in the two rows are arranged in a substantially rectangular shape.
The building according to claim 1 or 2, characterized in that.

At least some of the plurality of pile main bars are rebars thinner than the first and second joint bars,
The building according to any one of claims 1 to 3, wherein

The plurality of pile main bars are referred to as “buried pile main bars”, and the pile main bars that are part of the buried pile main bars and project from the foundation pile side to the foundation beam side are projected. In the case of “Pile main bar”
The total number of the projecting pile main bars is set to be smaller than the total number of the embedded pile main bars, so that the distance between the projecting pile main bars is wider than the distance between the embedded pile main bars.
The building according to any one of claims 1 to 3, wherein

The protruding pile main bar is a rebar thinner than the first and second joint bars,
The building according to claim 5.