JP3791887B2 - Method of joining precast concrete foundation beams and method of joining precast concrete members for wall construction - Google Patents
Method of joining precast concrete foundation beams and method of joining precast concrete members for wall construction Download PDFInfo
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Description
【0001】
本発明は、プレキャストコンクリ−ト基礎梁の接合方法及び壁構築用プレキャストコンクリ−ト部材の接合方法に係り、特に、強度と作業の両面の改善を図ることができるプレキャストコンクリ−ト基礎梁の接合方法及び壁構築用プレキャストコンクリ−ト部材の接合方法に関する。
【0002】
【従来の技術】
従来、プレキャストコンクリ−ト基礎梁の端面と端面をコンクリ−トを介して接合するプレキャストコンクリ−ト基礎梁の接合方法にあっては、相対するプレキャストコンクリ−ト基礎梁の端面よりそれぞれ突出する鉄筋を一部重ね、重ねた部分を溶接により接合し、接合した後、コンクリ−トを流し込んで、プレキャストコンクリ−ト基礎梁を並設している。
【0003】
【発明が解決しようとする課題】
そのため、建物の設置現場において、プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋同士を溶接により接合しなければならず、作業性が悪いという問題点があった。
本発明は、上述した問題点を除去するようにしたプレキャストコンクリ−ト基礎梁の接合方法、壁構築用プレキャストコンクリ−ト部材の接合方法、プレキャストコンクリ−ト基礎梁及び壁構築用プレキャストコンクリ−ト部材を提供するものである。
【0004】
【課題を解決するための手段】
上記目的を達成するために、請求項1記載のプレキャストコンクリ−ト基礎梁の接合方法は、プレキャストコンクリ−ト基礎梁の端面と端面をコンクリ−トを介して接合するプレキャストコンクリ−ト基礎梁の接合方法において、接合する一方の前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋は水平方向に略U字形状をなす第1の水平鉄筋を垂直方向に間隔を設けて複数形成して第1の水平鉄筋群を構成し、接合する他方の前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋は水平方向に略U字形状をなす第2の水平鉄筋を垂直方向に間隔を設けて複数形成して第2の水平鉄筋群を構成し、前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋と他方の前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋とは、前記鉄筋の長手方向を横断する方向の断面形状が同じであり、前記第1の水平鉄筋の略U字形状は、第1の弧状部と、この第1の弧状部の両側にそれぞれ延びる第1の左直線部、第1の右直線部で構成され、前記第1の弧状部は、前記第1の直線部と、前記第1の直線部より前記第1の左直線部に延びる左第1のコーナーと、前記第1の直線部より前記第1の右直線部に延びる右第1のコーナーとを備え、前記第2の水平鉄筋の略U字形状は、第2の弧状部と、この第2の弧状部の両側にそれぞれ延びる第2の左直線部、第2の右直線部で構成され、前記第2の弧状部は、前記第2の直線部と、前記第2の直線部より前記第2の左直線部に延びる左第2のコーナーと、前記第2の直線部より前記第2の右直線部に延びる右第2のコーナーとを備え、相対する前記第1の左直線部と前記第1の右直線部との幅と相対する前記第2の左直線部と前記第2の右直線部との幅は同じ大きさであり、垂直方向に隣接する前記第1の水平鉄筋と前記第1の水平鉄筋との間であって隣接する前記第1の水平鉄筋と前記第1の水平鉄筋から離間する位置に、前記第2の水平鉄筋が位置すると共に、前記第1の左直線部と前記第2の左直線部、前記第1の右直線部と前記第2の右直線部とをそれぞれ垂直方向に重なるように一致させ、前記第2の弧状部より前記第1の弧状部に近い前記左第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第1の垂直鉄筋と、この第1の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第1の結束線と、前記第1の弧状部より前記第2の弧状部に近い前記左第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第2の垂直鉄筋と、この第2の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第2の結束線と、前記第2の弧状部より前記第1の弧状部に近い前記右第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第3の垂直鉄筋と、この第3の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第3の結束線と、前記第1の弧状部より前記第2の弧状部に近い前記右第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第4の垂直鉄筋と、
この第4の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第4の結束線とを備えているものである。
【0005】
また、請求項2記載の壁構築用プレキャストコンクリ−ト部材の接合方法は、壁構築用プレキャストコンクリ−ト部材の端面と端面をコンクリ−トを介して接合する壁構築用プレキャストコンクリ−ト部材の接合方法において、接合する一方の前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋は水平方向に略U字形状をなす第1の水平鉄筋を垂直方向に間隔を設けて複数形成して第1の水平鉄筋群を構成し、接合する他方の前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋は水平方向に略U字形状をなす第2の水平鉄筋を垂直方向に間隔を設けて複数形成して第2の水平鉄筋群を構成し、前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋と他方の前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋とは、前記鉄筋の長手方向を横断する方向の断面形状が同じであり、前記第1の水平鉄筋の略U字形状は、第1の弧状部と、この第1の弧状部の両側にそれぞれ延びる第1の左直線部、第1の右直線部で構成され、前記第1の弧状部は、前記第1の直線部と、前記第1の直線部より前記第1の左直線部に延びる左第1のコーナーと、前記第1の直線部より前記第1の右直線部に延びる右第1のコーナーとを備え、前記第2の水平鉄筋の略U字形状は、第2の弧状部と、この第2の弧状部の両側にそれぞれ延びる第2の左直線部、第2の右直線部で構成され、前記第2の弧状部は、前記第2の直線部と、前記第2の直線部より前記第2の左直線部に延びる左第2のコーナーと、前記第2の直線部より前記第2の右直線部に延びる右第2のコーナーとを備え、相対する前記第1の左直線部と前記第1の右直線部との幅と相対する前記第2の左直線部と前記第2の右直線部との幅は同じ大きさであり、垂直方向に隣接する前記第1の水平鉄筋と前記第1の水平鉄筋との間であって隣接する前記第1の水平鉄筋と前記第1の水平鉄筋から離間する位置に、前記第2の水平鉄筋が位置すると共に、前記第1の左直線部と前記第2の左直線部、前記第1の右直線部と前記第2の右直線部とをそれぞれ垂直方向に重なるように一致させ、前記第2の弧状部より前記第1の弧状部に近い前記左第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第1の垂直鉄筋と、この第1の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第1の結束線と、前記第1の弧状部より前記第2の弧状部に近い前記左第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第2の垂直鉄筋と、この第2の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第2の結束線と、前記第2の弧状部より前記第1の弧状部に近い前記右第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第3の垂直鉄筋と、この第3の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第3の結束線と、前記第1の弧状部より前記第2の弧状部に近い前記右第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第4の垂直鉄筋と、この第4の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第4の結束線とを備えているものである。
【0008】
【実施例】
本発明の一実施例のプレキャストコンクリ−ト基礎梁の接合方法及びプレキャストコンクリ−ト基礎梁を図面を参照して説明する。
【0009】
1は直方体形状のプレキャストコンクリ−ト基礎梁で、プレキャストコンクリ−ト基礎梁1はPC受け部材2の上に載置されている。そして、PC受け部材2の下は順次、モルタル3、捨てコンクリ−ト4となっている。
このプレキャストコンクリ−ト基礎梁(基礎梁とは、最下階の柱下を横につなぐ水平部材)1の一方の端面(側面)1aより突出する鉄筋は水平方向に略U字形状をなす第1の水平鉄筋T1 (第1のコッタ−筋)を垂直方向に間隔tを設けて複数形成して第1の水平鉄筋群T1 ’を構成している。
そして、第1の水平鉄筋T1 の略U字形状は、第1の弧状部T1cと、この第1の弧状部第1の弧状部T1cの両側にそれぞれ延びる第1の左直線部T1L、第1の右直線部T1Rで構成されている。
また、プレキャストコンクリ−ト基礎梁1の他方の端面(側面)1bより突出する鉄筋は水平方向に略U字形状をなす第2の水平鉄筋T2 (第2のコッタ−筋)を垂直方向に間隔を設けて複数形成して第2の水平鉄筋群T2 ’を構成している。
そして、第2の水平鉄筋T2 の略U字形状は、第2の弧状部T2cと、この第2の弧状部T2cの両側にそれぞれ延びる第2の左直線部T2L、第2の右直線部T2Rで構成されている。
【0010】
上述したプレキャストコンクリ−ト基礎梁1の一方の端面1aとプレキャストコンクリ−ト基礎梁1の他方の端面1bとは、相対向する位置関係にあり(図2参照)、第1の水平鉄筋T1 及び第2の水平鉄筋T2 は、端面1a、1bの連続する凹凸面の凸面に設けられている。なお、付着力を大きくするために、第1の水平鉄筋T1 及び第2の水平鉄筋T2 は略U字形状となっている。
【0011】
また、プレキャストコンクリ−ト基礎梁1の一方の端面1aより突出する鉄筋T1 とプレキャストコンクリ−ト基礎梁1の他方の端面1bより突出する鉄筋T2 とは、鉄筋T1 T2 、の長手方向を横断する方向の断面形状が同じ(例えば、円)であり、相対する第1の左直線部T1Lと第1の右直線部T1Rとの幅Wと相対する第2の左直線部T2Lと第2の右直線部T2Rとの幅Wは同じ大きさWであり、第1の水平鉄筋T1 と第2の水平鉄筋T2 とは、プレキャストコンクリ−ト基礎梁1の底面1Cよりの高さが異なっている(h1 ≠H1 、h2 ≠H2 、h3 ≠H3 、h4 ≠H4 、h5 ≠H5 、h6 ≠H6 、h7 ≠H7 、h8 ≠H8 、h9 ≠H9 )。
【0012】
なお、プレキャストコンクリ−ト基礎梁1の端面1aと端面1bをコンクリ−トCを介して接合するプレキャストコンクリ−ト基礎梁1を接合方法する際には、図1に示すように、プレキャストコンクリ−ト基礎梁1の端面1bを矢印方向に移動させ、図4乃至図6に示すように、垂直方向に隣接する第1の水平鉄筋T1 と第1の水平鉄筋T1 との間に、第2の水平鉄筋T2 を位置させると共に、第1の左直線部T1Lと第2の左直線部T2L、第1の右直線部T1Rと第2の右直線部T2Rをそれぞれ垂直方向に重なるように一致させる(図5参照)。
【0013】
そして、第1の垂直鉄筋E1 は垂直方向に立設する鉄筋で、第1の垂直鉄筋E1 は、第2の弧状部T2Cより第1の弧状部T1Cに近い位置であり、垂直方向に重なるように一致(平面的に見て一致)した第1の左直線部T1Lと第2の左直線部T2Lとにそれぞれ当接している。この第1の垂直鉄筋E1 と第1の左直線部T1L(又は第2の左直線部T2L)とは、第1の結束線K1 (例えば、番線)で結束されている。
また、第2の垂直鉄筋E2 は垂直方向に立設する鉄筋で、第2の垂直鉄筋E2 は、第1の弧状部T1Cより第2の弧状部T2Cに近い位置であり、垂直方向に重なるように一致(平面的に見て一致)した第1の左直線部T1Lと第2の左直線部T2Lとにそれぞれ当接している。この第2の垂直鉄筋E2 と第1の左直線部T1L(又は第2の左直線部T2L)とは、第2の結束線K2 (例えば、番線)で結束されている。
また、第3の垂直鉄筋E3 は垂直方向に立設する鉄筋で、第3の垂直鉄筋E3 は、第2の弧状部T2Cより第1の弧状部T1Cに近い位置であり、垂直方向に重なるように一致(平面的に見て一致)した第1の右直線部T1Rと第2の右直線部T2Rとにそれぞれ当接している。この第3の垂直鉄筋E3 と第1の右直線部T1R(又は第2の右直線部T2R)とは、第3の結束線K3 (例えば、番線)で結束されている。
また、第4の垂直鉄筋E4 は垂直方向に立設する鉄筋で、第1の弧状部T1Cより第2の弧状部T2Cに近い位置であり、垂直方向に重なるように一致(平面的に見て一致)した第1の右直線部T1Rと第2の右直線部T2Rとにそれぞれ当接している。この第4の垂直鉄筋E4 と第1の右直線部T1R(又は第2の右直線部T2R)とは、第4の結束線K4 (例えば、番線)で結束されている。
【0014】
上述したように、第1の水平鉄筋T1 、第2の水平鉄筋T2 、第1の垂直鉄筋E1 〜第4の垂直鉄筋E4 を第1の結束線K1 〜第4の結束線K4 で結束させ、図6に示すように、型枠10、10を使用して、コンクリ−トCを流し込んで、逐次プレキャストコンクリ−ト基礎梁1の端面1aと端面1bをコンクリ−トCを介して接合する。
【0015】
従って、垂直方向に隣接する第1の水平鉄筋T1 と第1の水平鉄筋T1 との間に、第2の水平鉄筋T2 が位置すると共に、第1の左直線部T1Lと第2の左直線部T2L、第1の右直線部T1Rと第2の右直線部T2Rとをそれぞれ垂直方向に重なるように一致させ、しかも、プレキャストコンクリ−ト基礎梁1の端面1aと端面1bとを接合する際、従来のように溶接を使用せず、鉄筋を結束線で結束するため、垂直方向の剪断力に強く、その上、作業性をも改善することができ、更に、プレキャストコンクリ−ト基礎梁1の端面1a(又は1b)より突出する第1、2の水平鉄筋T1 、T2 の略U字形状は、第1、2の弧状部T1c、T2cと、この第1、2の弧状部T1c、T2cの両側にそれぞれ延びる第1、2の左直線部T1L、T2L、第1、2の右直線部T1R、T2Rで構成され、先端側が閉じているため、作業における危険性を改善することができる。
【0016】
上述した実施例においては、プレキャストコンクリ−ト基礎梁1について説明したが、本発明にあっては、これに限らず、直方体形状の壁構築用プレキャストコンクリ−ト部材の端面(側面)と端面(側面)をコンクリ−トを介して接合する壁構築用プレキャストコンクリ−ト部材の接合方法にも同様に適用できる。なお、上述した直方体形状のプレキャストコンクリ−ト基礎梁1が直方体形状の壁構築用プレキャストコンクリ−ト部材に置き換わるのみで、同様であるのでその説明は省略する。
【0017】
【発明の効果】
請求項1記載のプレキャストコンクリ−ト基礎梁の接合方法によれば、垂直方向に隣接する第1の水平鉄筋と第1の水平鉄筋との間に、第2の水平鉄筋が位置すると共に、第1の左直線部と第2の左直線部、第1の右直線部と第2の右直線部とをそれぞれ垂直方向に重なるように一致させ、しかも、プレキャストコンクリ−ト基礎梁の端面と端面とを接合する際、従来のように溶接を使用せず、鉄筋を結束線で結束するため、垂直方向の剪断力に強く、その上、作業性をも改善することができ、更に、プレキャストコンクリ−ト基礎梁の端面より突出する第1、2の水平鉄筋の略U字形状は、第1、2の弧状部と、この第1、2の弧状部の両側にそれぞれ延びる第1、2の左直線部、第1、2の右直線部で構成され、先端側が閉じているため、作業における危険性を改善することができる。
【0018】
また、請求項2記載の壁構築用プレキャストコンクリ−ト部材の接合方法によれば、垂直方向に隣接する第1の水平鉄筋と第1の水平鉄筋との間に、第2の水平鉄筋が位置すると共に、第1の左直線部と第2の左直線部、第1の右直線部と第2の右直線部とをそれぞれ垂直方向に重なるように一致させ、しかも、壁構築用プレキャストコンクリ−ト部材の端面と端面とを接合する際、従来のように溶接を使用せず、鉄筋を結束線で結束するため、垂直方向の剪断力に強く、その上、作業性をも改善することができ、更に、壁構築用プレキャストコンクリ−ト部材の端部より突出する第1、2の水平鉄筋の略U字形状は、第1、2の弧状部と、この第1、2の弧状部の両側にそれぞれ延びる第1、2の左直線部、第1、2の右直線部で構成され、先端側が閉じているため、作業における危険性を改善することができる。
【図面の簡単な説明】
【図1】図1は、本発明の一実施例のプレキャストコンクリ−ト基礎梁の設置状況を示す概略的図である。
【図2】図2は、図1のプレキャストコンクリ−ト基礎梁の概略的斜視図である。
【図3】図3は、図1の一部を斜めに見た概略的斜視図である。
【図4】図4は、垂直方向に隣接する第1の水平鉄筋と第1の水平鉄筋との間に、第2の水平鉄筋が位置し、垂直鉄筋の設置状況を示す概略的図である。
【図5】図5は、図4における垂直鉄筋が設置され、平面的に見た概略的平面図である。
【図6】図6は、型枠を使用して、コンクリ−トを流し込む状態を示す概略的図である。
【図7】図7は、型枠を外し、プレキャストコンクリ−ト基礎梁の端面と端面をコンクリ−トを介して接合された状態を示す概略的斜視図である。
【符号の説明】
1 プレキャストコンクリ−ト基礎梁
T1 第1の水平鉄筋
T2 第2の水平鉄筋
T1L 第1の左直線部
T1R 第1の右直線部
T2L 第2の左直線部
T2R 第2の右直線部
1a 端面
1b 端面
C コンクリ−ト[0001]
The present invention, pre-cast concrete - DOO foundation beams bonding method and wall constructions for precast concrete - relates to bonding how adversaries member, in particular, the precast concrete it is possible to improve the both surfaces of the strength and work - DOO foundation beams bonding method and wall constructions for precast concrete - about the junction how bets member.
[0002]
[Prior art]
Conventionally, in the joining method of the precast concrete foundation beam in which the end faces of the precast concrete foundation beam are joined via the concrete, the reinforcing bars projecting from the end faces of the opposing precast concrete foundation beams, respectively. Are overlapped, and the overlapped portions are joined by welding. After joining, the concrete is poured into the precast concrete foundation beams.
[0003]
[Problems to be solved by the invention]
Therefore, at the building installation site, the reinforcing bars protruding from the end faces of the precast concrete foundation beams must be joined together by welding, which has a problem of poor workability.
The present invention relates to a method for joining a precast concrete foundation beam, a method for joining a precast concrete member for wall construction, a precast concrete foundation beam, and a precast concrete for wall construction that eliminate the above-mentioned problems. A member is provided.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the precast concrete foundation beam joining method according to claim 1 is a method of joining a precast concrete foundation beam in which the end face and the end face of the precast concrete foundation beam are joined via a concrete. In the joining method, the reinforcing bars protruding from the end face of one of the precast concrete foundation beams to be joined are formed by forming a plurality of first horizontal reinforcing bars each having a substantially U shape in the horizontal direction at intervals in the vertical direction. The reinforcing bars projecting from the end face of the other precast concrete foundation beam to be joined are formed with a plurality of second horizontal reinforcing bars that are substantially U-shaped in the horizontal direction and spaced in the vertical direction. To form a second horizontal reinforcing bar group, which protrudes from the end surface of the precast concrete foundation beam and the other end surface of the precast concrete foundation beam. The reinforcing bars have the same cross-sectional shape in the direction crossing the longitudinal direction of the reinforcing bars, and the substantially U-shape of the first horizontal reinforcing bars includes a first arc-shaped portion and both sides of the first arc-shaped portion. Each of the first straight line portion and the first right straight portion extending from the first straight line portion and the first left straight portion from the first straight line portion. And a first right corner extending from the first straight portion to the first right straight portion, and the substantially horizontal U-shape of the second horizontal reinforcing bar is An arc-shaped portion, and a second left straight portion and a second right straight portion extending on both sides of the second arc-shaped portion, respectively, and the second arc-shaped portion includes the second straight portion and the second straight portion. A second left corner extending from the second straight portion to the second left straight portion, and a second right extending from the second straight portion to the second right straight portion. A corner, width as large as the opposite the first left straight portion and the width and opposite the said second right straight portion and the second left straight portion of the first right straight portion The first horizontal rebar and the first horizontal rebar that are vertically adjacent to each other, and the first horizontal rebar and the first horizontal rebar that are adjacent to each other are spaced apart from the first horizontal rebar . 2 horizontal rebars are located, and the first left straight line portion and the second left straight line portion, and the first right straight line portion and the second right straight line portion coincide with each other in the vertical direction. The first left straight line and the second left straight line that are located at the left first corner closer to the first arc than the second arc, and coincide with each other so as to overlap in the vertical direction. A first vertical reinforcing bar vertically contacting with each of the first vertical reinforcing bar and the first vertical reinforcing bar A first binding line that binds one left straight line part or the second left straight line part, and a position of the left second corner that is closer to the second arcuate part than the first arcuate part, A second vertical reinforcing bar that stands in the vertical direction in contact with the first left straight line portion and the second left straight line portion that are aligned so as to overlap each other in the vertical direction; and At the position of the second binding line that binds the first left straight line portion or the second left straight line portion, and the right first corner closer to the first arc-shaped portion than the second arc-shaped portion. A third vertical reinforcing bar that stands in the vertical direction in contact with each of the first right straight line portion and the second right straight line portion that overlap each other so as to overlap in the vertical direction; From a third binding line that binds a reinforcing bar and the first right straight portion or the second right straight portion, and the first arc-shaped portion, Is said right second corner positions close to the arc-shaped portion of the 2, respectively abuts against the first right straight portion that matched so as to overlap in a vertical direction and said second right straight portion, in the vertical direction A fourth vertical rebar to stand;
The fourth vertical reinforcing bar is provided with a fourth binding wire that binds the first right straight portion or the second right straight portion.
[0005]
According to a second aspect of the present invention, there is provided a method for joining a precast concrete member for building a wall, wherein the end surface of the precast concrete member for constructing a wall is joined to the end surface via the concrete. In the joining method, the reinforcing bars protruding from the end face of one of the wall-building precast concrete members to be joined are formed by forming a plurality of first horizontal reinforcing bars having a substantially U shape in the horizontal direction with a space in the vertical direction. Reinforcing bars that constitute the first horizontal reinforcing bar group and project from the end face of the other precast concrete member for building a wall to be joined are spaced apart from each other in the vertical direction with a second horizontal reinforcing bar having a substantially U shape in the horizontal direction. A second horizontal reinforcing bar group is formed by providing a plurality of reinforcing bars protruding from the end surface of the wall-building precast concrete member and the other wall-building precast concrete. The reinforcing bar projecting from the end surface of the G member has the same cross-sectional shape in the direction transverse to the longitudinal direction of the reinforcing bar, and the substantially U-shape of the first horizontal reinforcing bar includes the first arc-shaped portion and the first arc-shaped portion. A first left straight line portion and a first right straight line portion respectively extending on both sides of the one arc-shaped portion. The first arc-shaped portion is formed from the first straight line portion and the first straight line portion. A left first corner extending to the first left straight line portion; and a right first corner extending from the first straight line portion to the first right straight line portion, and substantially U-shaped of the second horizontal reinforcing bar. The shape is composed of a second arc-shaped portion, a second left straight portion extending on both sides of the second arc-shaped portion, and a second right straight portion, and the second arc-shaped portion is the second arc-shaped portion. A straight portion, a second left corner extending from the second straight portion to the second left straight portion, and the second straight portion from the second straight portion. And a right second corner extending straight portion, opposite the first width and opposite the said second left straight portion second right straight left straight portion and the first right straight portion The first horizontal reinforcing bar and the first horizontal reinforcing bar are adjacent to each other between the first horizontal reinforcing bar and the first horizontal reinforcing bar that are adjacent to each other in the vertical direction. a position spaced from, the said second horizontal rebar is located, the said second left straight portion and the first left straight portion, and the first right straight portion and said second right straight portion The first left straight line that is aligned so as to overlap each other in the vertical direction, is the position of the first left corner that is closer to the first arc-shaped portion than the second arc-shaped portion, and is aligned so as to overlap in the vertical direction A first vertical reinforcing bar that stands in a vertical direction in contact with the second left straight portion and the second left straight portion, A first binding wire that binds the first vertical reinforcing bar and the first left straight line portion or the second left straight line portion; and the left second wire closer to the second arc shape portion than the first arc shape portion . A second vertical reinforcing bar that is in a vertical position and is in contact with the first left straight line portion and the second left straight line portion, which are located at the corners of the second corner and coincide with each other so as to overlap in the vertical direction. a second tie wire for binding a second of said vertical rebar first left straight portion or the second left straight portion, the closer to the first arcuate portion than the second arcuate portion A third vertical position that is the position of the first right corner and that abuts each of the first right straight line portion and the second right straight line portion that coincide with each other so as to overlap in the vertical direction. A reinforcing bar, a third binding line that binds the third vertical reinforcing bar and the first right straight part or the second right straight part, and a front Is said right second position of the corner near the first and the second arc-shaped portion from the arc-shaped portion, the first right straight portion that matched so as to overlap in a vertical direction and said second right straight portion A fourth vertical reinforcing bar that abuts each other in a vertical direction, and a fourth binding wire that binds the fourth vertical reinforcing bar and the first right straight portion or the second right straight portion. It is equipped with.
[0008]
【Example】
A precast concrete foundation beam joining method and precast concrete foundation beam according to an embodiment of the present invention will be described with reference to the drawings.
[0009]
Reference numeral 1 denotes a rectangular parallelepiped precast concrete foundation beam. The precast concrete foundation beam 1 is placed on a
The reinforcing bars projecting from one end face (side face) 1a of the precast concrete foundation beam (the foundation beam is a horizontal member connecting the bottom of the bottom floor sideways) 1 are substantially U-shaped in the horizontal direction. A plurality of one horizontal rebar T 1 (first cotter rebar) is formed at intervals t in the vertical direction to form a first horizontal rebar group T 1 ′.
The substantially horizontal U-shape of the first horizontal reinforcing bar T 1 includes a first arc-shaped portion T 1c and a first left straight line portion T extending on both sides of the first arc-shaped portion and the first arc-shaped portion T 1c. 1L and the first right straight line portion T 1R .
Further, the reinforcing bar protruding from the other end face (side face) 1b of the precast concrete foundation beam 1 has a second horizontal reinforcing bar T 2 (second cotter bar) having a substantially U shape in the horizontal direction in the vertical direction. A second horizontal reinforcing bar group T 2 ′ is formed by forming a plurality of intervals.
The substantially horizontal U-shape of the second horizontal reinforcing bar T 2 includes a second arc-shaped portion T 2c , a second left straight portion T 2L extending on both sides of the second arc-shaped portion T 2c , and a second It is composed of a right straight portion T 2R .
[0010]
The one end face 1a of the precast concrete foundation beam 1 and the
[0011]
The reinforcing bar T 1 protruding from one end face 1a of the precast concrete foundation beam 1 and the reinforcing bar T 2 protruding from the
[0012]
When the precast concrete foundation beam 1 is joined by joining the end face 1a and the
[0013]
The first vertical reinforcing bar E 1 is a reinforcing bar erected in the vertical direction. The first vertical reinforcing bar E 1 is closer to the first arcuate part T 1C than the second arcuate part T 2C and is vertically The first left straight line portion T 1L and the second left straight line portion T 2L are in contact with each other so as to overlap in the direction (matching in plan view). The first vertical reinforcing bar E 1 and the first left straight line portion T 1L (or the second left straight line portion T 2L ) are bound by a first binding line K 1 (for example, a number line).
The second vertical reinforcing bar E 2 is a vertical reinforcing bar, and the second vertical reinforcing bar E 2 is closer to the second arcuate part T 2C than the first arcuate part T 1C and is vertically The first left straight line portion T 1L and the second left straight line portion T 2L are in contact with each other so as to overlap in the direction (matching in plan view). The second vertical reinforcing bar E 2 and the first left straight line portion T 1L (or the second left straight line portion T 2L ) are bound by a second binding line K 2 (for example, a number line).
The third vertical reinforcing bar E 3 is a vertical reinforcing bar, and the third vertical reinforcing bar E 3 is closer to the first arcuate part T 1C than the second arcuate part T 2C and is vertical. The first right straight line portion T 1R and the second right straight line portion T 2R are in contact with each other so as to overlap with each other (coincidence when viewed in plan). The third vertical rebar E 3 and the first right straight portion T 1R (or the second right straight portion T 2R ) are bound by a third binding line K 3 (for example, a number line).
Further, the fourth vertical reinforcing bar E 4 is a reinforcing bar erected in the vertical direction and is closer to the second arcuate part T 2C than the first arcuate part T 1C and coincides so as to overlap in the vertical direction (planar) Are in contact with the first right straight line portion T 1R and the second right straight line portion T 2R , which coincide with each other. The fourth vertical reinforcing bar E 4 and the first right straight portion T 1R (or the second right straight portion T 2R ) are bound by a fourth binding line K 4 (for example, a number line).
[0014]
As described above, the first horizontal reinforcing bar T 1 , the second horizontal reinforcing bar T 2 , the first vertical reinforcing bar E 1 to the fourth vertical reinforcing bar E 4 are connected to the first binding line K 1 to the fourth binding line. is binding with K 4, as shown in FIG. 6, using the
[0015]
Thus, between the horizontal reinforcing bar T 1 first horizontal reinforcing bar T 1 first vertically adjacent, together with the second horizontal rebar T 2 positioned, the first left straight portion T 1L second The left straight line portion T 2L , the first right straight line portion T 1R and the second right straight line portion T 2R are made to coincide with each other in the vertical direction, and the end face 1a and the end face of the precast concrete foundation beam 1 are aligned. When joining to 1b, welding is not used as in the prior art, and the reinforcing bars are bound by the binding wire, so that it is strong against the shearing force in the vertical direction, and the workability can be improved. The substantially U-shapes of the first and second horizontal rebars T 1 and T 2 protruding from the end face 1a (or 1b) of the concrete foundation beam 1 are the first and second arc-shaped portions T 1c and T 2c , First and second left straight portions T 1L , T 2L , first and second right extending on both sides of the first and second arc-shaped portions T 1c , T 2c , respectively. Since it is composed of the straight portions T 1R and T 2R and the tip side is closed, the danger in the work can be improved.
[0016]
In the embodiment described above, the precast concrete foundation beam 1 has been described. However, in the present invention, the present invention is not limited to this, and the end face (side face) and end face of the precast concrete member for wall construction having a rectangular parallelepiped shape ( The method can be similarly applied to a method for joining a precast concrete member for wall construction in which side surfaces are joined via a concrete. The above-described rectangular parallelepiped precast concrete foundation beam 1 is replaced by a rectangular parallelepiped-shaped precast concrete member for building a wall.
[0017]
【The invention's effect】
According to the method for joining precast concrete foundation beams according to claim 1, the second horizontal reinforcing bar is located between the first horizontal reinforcing bar and the first horizontal reinforcing bar adjacent in the vertical direction, and The left straight line portion and the second left straight line portion, the first right straight line portion and the second right straight line portion coincide with each other so as to overlap each other in the vertical direction, and the end face and end face of the precast concrete foundation beam When joining the steel, the reinforcing bars are bound by the binding wire without using welding as in the conventional case, so that it is strong against the shearing force in the vertical direction, and the workability can be improved. -The substantially U-shapes of the first and second horizontal reinforcing bars protruding from the end face of the girder beam are the first and second arc-shaped portions and the first and second arc-shaped portions extending on both sides of the first and second arc-shaped portions, respectively. Consists of the left straight part and the first and second right straight parts, and the tip is closed It is possible to improve the risk in the work.
[0018]
Moreover, according to the joining method of the precast concrete member for wall construction of
[Brief description of the drawings]
FIG. 1 is a schematic view showing an installation state of a precast concrete foundation beam according to an embodiment of the present invention.
FIG. 2 is a schematic perspective view of the precast concrete foundation beam of FIG. 1;
FIG. 3 is a schematic perspective view of a part of FIG. 1 viewed obliquely.
FIG. 4 is a schematic diagram showing a vertical reinforcing bar installation state in which a second horizontal reinforcing bar is located between a first horizontal reinforcing bar and a first horizontal reinforcing bar that are vertically adjacent to each other. .
FIG. 5 is a schematic plan view in which the vertical reinforcing bar in FIG. 4 is installed and viewed in plan.
FIG. 6 is a schematic diagram showing a state in which concrete is poured using a mold.
FIG. 7 is a schematic perspective view showing a state in which the formwork is removed and the end surfaces of the precast concrete foundation beams are joined to each other through the concrete.
[Explanation of symbols]
1 Precast concrete foundation beam T 1 1st horizontal rebar T 2 2nd horizontal rebar T 1L 1st left straight line T 1R 1st right straight line T 2L 2nd left straight line T 2R 2nd Right straight part
Claims (2)
接合する一方の前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋は水平方向に略U字形状をなす第1の水平鉄筋を垂直方向に間隔を設けて複数形成して第1の水平鉄筋群を構成し、
接合する他方の前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋は水平方向に略U字形状をなす第2の水平鉄筋を垂直方向に間隔を設けて複数形成して第2の水平鉄筋群を構成し、
前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋と他方の前記プレキャストコンクリ−ト基礎梁の端面より突出する鉄筋とは、前記鉄筋の長手方向を横断する方向の断面形状が同じであり、
前記第1の水平鉄筋の略U字形状は、第1の弧状部と、この第1の弧状部の両側にそれぞれ延びる第1の左直線部、第1の右直線部で構成され、
前記第1の弧状部は、前記第1の直線部と、前記第1の直線部より前記第1の左直線部に延びる左第1のコーナーと、前記第1の直線部より前記第1の右直線部に延びる右第1のコーナーとを備え、
前記第2の水平鉄筋の略U字形状は、第2の弧状部と、この第2の弧状部の両側にそれぞれ延びる第2の左直線部、第2の右直線部で構成され、
前記第2の弧状部は、前記第2の直線部と、前記第2の直線部より前記第2の左直線部に延びる左第2のコーナーと、前記第2の直線部より前記第2の右直線部に延びる右第2のコーナーとを備え、
相対する前記第1の左直線部と前記第1の右直線部との幅と相対する前記第2の左直線部と前記第2の右直線部との幅は同じ大きさであり、
垂直方向に隣接する前記第1の水平鉄筋と前記第1の水平鉄筋との間であって隣接する前記第1の水平鉄筋と前記第1の水平鉄筋から離間する位置に、前記第2の水平鉄筋が位置すると共に、前記第1の左直線部と前記第2の左直線部、前記第1の右直線部と前記第2の右直線部とをそれぞれ垂直方向に重なるように一致させ、
前記第2の弧状部より前記第1の弧状部に近い前記左第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第1の垂直鉄筋と、
この第1の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第1の結束線と、
前記第1の弧状部より前記第2の弧状部に近い前記左第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第2の垂直鉄筋と、
この第2の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第2の結束線と、
前記第2の弧状部より前記第1の弧状部に近い前記右第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第3の垂直鉄筋と、
この第3の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第3の結束線と、
前記第1の弧状部より前記第2の弧状部に近い前記右第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第4の垂直鉄筋と、
この第4の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第4の結束線と
を備えていることを特徴とするプレキャストコンクリ−ト基礎梁の接合方法。In the method of joining precast concrete foundation beams, in which the end faces of the precast concrete foundation beams are joined together via the concrete,
Reinforcing bars that protrude from the end face of one of the precast concrete foundation beams to be joined are formed by forming a plurality of first horizontal reinforcing bars having a substantially U shape in the horizontal direction at intervals in the vertical direction. Configure
Reinforcing bars that protrude from the end face of the other precast concrete foundation beam to be joined are formed as a plurality of second horizontal reinforcing bars that are substantially U-shaped in the horizontal direction at intervals in the vertical direction. Configure
The reinforcing bar protruding from the end face of the precast concrete foundation beam and the reinforcing bar protruding from the other end face of the precast concrete foundation beam have the same cross-sectional shape in the direction transverse to the longitudinal direction of the reinforcing bar,
The substantially U-shape of the first horizontal reinforcing bar is composed of a first arc-shaped portion, a first left straight portion extending on both sides of the first arc-shaped portion, and a first right straight portion,
The first arcuate portion includes the first straight portion, a left first corner extending from the first straight portion to the first left straight portion, and the first straight portion from the first straight portion. A right first corner extending to the right straight part,
The substantially U-shape of the second horizontal reinforcing bar is composed of a second arc-shaped portion, a second left straight portion extending on both sides of the second arc-shaped portion, and a second right straight portion,
The second arcuate portion includes the second straight portion, a second left corner extending from the second straight portion to the second left straight portion, and the second straight portion from the second straight portion. A right second corner extending to the right straight part,
The widths of the second left straight line portion and the second right straight line portion that are opposite to the widths of the first left straight portion and the first right straight portion that are opposite to each other are the same size.
The second horizontal rebar is positioned between the first horizontal rebar and the first horizontal rebar adjacent in the vertical direction and separated from the adjacent first horizontal rebar and the first horizontal rebar. Reinforcing bars are located, and the first left straight line portion and the second left straight line portion, the first right straight line portion and the second right straight line portion are respectively aligned in a vertical direction,
The first left straight line portion and the second left straight line portion, which are positioned at the left first corner closer to the first arc-shaped portion than the second arc-shaped portion, and coincide with each other so as to overlap in the vertical direction. Each of the first vertical reinforcing bars standing in the vertical direction,
A first binding wire that binds the first vertical reinforcing bar and the first left straight line portion or the second left straight line portion;
The first left straight line portion and the second left straight line portion, which are positioned at the left second corner closer to the second arc-shaped portion than the first arc-shaped portion, and coincide with each other so as to overlap in the vertical direction. A second vertical reinforcing bar vertically contacting with each other,
A second binding wire that binds the second vertical reinforcing bar and the first left straight line portion or the second left straight line portion;
The first right straight portion and the second right straight portion, which are located at the right first corner closer to the first arc-shaped portion than the second arc-shaped portion, and are aligned so as to overlap in the vertical direction, A third vertical reinforcing bar that stands in the vertical direction,
A third binding wire that binds the third vertical reinforcing bar and the first right straight portion or the second right straight portion;
The first right straight portion and the second right straight portion, which are located at the right second corner closer to the second arc-shaped portion than the first arc-shaped portion, and are aligned so as to overlap in the vertical direction, A fourth vertical reinforcing bar that stands in the vertical direction,
A precast concrete foundation beam joining method comprising: the fourth vertical reinforcing bar and a fourth binding line that binds the first right straight portion or the second right straight portion. .
接合する一方の前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋は水平方向に略U字形状をなす第1の水平鉄筋を垂直方向に間隔を設けて複数形成して第1の水平鉄筋群を構成し、
接合する他方の前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋は水平方向に略U字形状をなす第2の水平鉄筋を垂直方向に間隔を設けて複数形成して第2の水平鉄筋群を構成し、
前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋と他方の前記壁構築用プレキャストコンクリ−ト部材の端面より突出する鉄筋とは、前記鉄筋の長手方向を横断する方向の断面形状が同じであり、
前記第1の水平鉄筋の略U字形状は、第1の弧状部と、この第1の弧状部の両側にそれぞれ延びる第1の左直線部、第1の右直線部で構成され、
前記第1の弧状部は、前記第1の直線部と、前記第1の直線部より前記第1の左直線部に延びる左第1のコーナーと、前記第1の直線部より前記第1の右直線部に延びる右第1のコーナーとを備え、
前記第2の水平鉄筋の略U字形状は、第2の弧状部と、この第2の弧状部の両側にそれぞれ延びる第2の左直線部、第2の右直線部で構成され、
前記第2の弧状部は、前記第2の直線部と、前記第2の直線部より前記第2の左直線部に延びる左第2のコーナーと、前記第2の直線部より前記第2の右直線部に延びる右第2のコーナーとを備え、
相対する前記第1の左直線部と前記第1の右直線部との幅と相対する前記第2の左直線部と前記第2の右直線部との幅は同じ大きさであり、
垂直方向に隣接する前記第1の水平鉄筋と前記第1の水平鉄筋との間であって隣接する前記第1の水平鉄筋と前記第1の水平鉄筋から離間する位置に、前記第2の水平鉄筋が位置すると共に、前記第1の左直線部と前記第2の左直線部、前記第1の右直線部と前記第2の右直線部とをそれぞれ垂直方向に重なるように一致させ、
前記第2の弧状部より前記第1の弧状部に近い前記左第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第1の垂直鉄筋と、
この第1の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第1の結束線と、
前記第1の弧状部より前記第2の弧状部に近い前記左第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の左直線部と前記第2の左直線部とにそれぞれ当接して、垂直方向に立設する第2の垂直鉄筋と、
この第2の垂直鉄筋と前記第1の左直線部又は前記第2の左直線部とを結束する第2の結束線と、
前記第2の弧状部より前記第1の弧状部に近い前記右第1のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第3の垂直鉄筋と、
この第3の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第3の結束線と、
前記第1の弧状部より前記第2の弧状部に近い前記右第2のコーナーの位置であり、垂直方向に重なるように一致した前記第1の右直線部と前記第2の右直線部とにそれぞれ当接して、垂直方向に立設する第4の垂直鉄筋と、
この第4の垂直鉄筋と前記第1の右直線部又は前記第2の右直線部とを結束する第4の結束線と
を備えていることを特徴とする壁構築用プレキャストコンクリ−ト部材の接合方法。In the joining method of the precast concrete member for wall construction which joins the end face and end face of the precast concrete member for wall construction via a concrete,
Reinforcing bars that protrude from the end face of one of the precast concrete members for building a wall to be joined are formed by forming a plurality of first horizontal reinforcing bars that are substantially U-shaped in the horizontal direction at intervals in the vertical direction. Make up the reinforcing bar group,
Reinforcing bars that protrude from the end face of the other precast concrete member for building a wall to be joined are formed by forming a plurality of second horizontal reinforcing bars that are substantially U-shaped in the horizontal direction at intervals in the vertical direction. Make up the reinforcing bar group,
The reinforcing bar protruding from the end face of the wall building precast concrete member and the reinforcing bar protruding from the other end face of the wall building precast concrete member have the same cross-sectional shape in the direction crossing the longitudinal direction of the reinforcing bar. And
The substantially U-shape of the first horizontal reinforcing bar is composed of a first arc-shaped portion, a first left straight portion extending on both sides of the first arc-shaped portion, and a first right straight portion,
The first arcuate portion includes the first straight portion, a left first corner extending from the first straight portion to the first left straight portion, and the first straight portion from the first straight portion. A right first corner extending to the right straight part,
The substantially U-shape of the second horizontal reinforcing bar is composed of a second arc-shaped portion, a second left straight portion extending on both sides of the second arc-shaped portion, and a second right straight portion,
The second arcuate portion includes the second straight portion, a second left corner extending from the second straight portion to the second left straight portion, and the second straight portion from the second straight portion. A right second corner extending to the right straight part,
The widths of the second left straight line portion and the second right straight line portion that are opposite to the widths of the first left straight portion and the first right straight portion that are opposite to each other are the same size.
The second horizontal rebar is positioned between the first horizontal rebar and the first horizontal rebar adjacent in the vertical direction and separated from the adjacent first horizontal rebar and the first horizontal rebar. Reinforcing bars are located, and the first left straight line portion and the second left straight line portion, the first right straight line portion and the second right straight line portion are respectively aligned in a vertical direction,
The first left straight line portion and the second left straight line portion, which are positioned at the left first corner closer to the first arc-shaped portion than the second arc-shaped portion, and coincide with each other so as to overlap in the vertical direction. Each of the first vertical reinforcing bars standing in the vertical direction,
A first binding wire that binds the first vertical reinforcing bar and the first left straight line portion or the second left straight line portion;
The first left straight line portion and the second left straight line portion, which are positioned at the left second corner closer to the second arc-shaped portion than the first arc-shaped portion, and coincide with each other so as to overlap in the vertical direction. A second vertical reinforcing bar that vertically stands in contact with each other,
A second binding wire that binds the second vertical reinforcing bar and the first left straight line portion or the second left straight line portion;
The first right straight portion and the second right straight portion, which are located at the right first corner closer to the first arc-shaped portion than the second arc-shaped portion, and are aligned so as to overlap in the vertical direction, A third vertical reinforcing bar that stands in the vertical direction,
A third binding wire that binds the third vertical reinforcing bar and the first right straight portion or the second right straight portion;
The first right straight portion and the second right straight portion, which are located at the right second corner closer to the second arc-shaped portion than the first arc-shaped portion, and are aligned so as to overlap in the vertical direction, A fourth vertical reinforcing bar that stands in the vertical direction,
A precast concrete member for building a wall, comprising: the fourth vertical reinforcing bar and a fourth binding line that binds the first right straight portion or the second right straight portion. Joining method.
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JP5238625B2 (en) * | 2009-06-25 | 2013-07-17 | 東急建設株式会社 | Deep foundation method |
JP5960016B2 (en) * | 2012-10-01 | 2016-08-02 | 日本住宅株式会社 | Concrete foundation construction set |
JP6438820B2 (en) * | 2015-03-30 | 2018-12-19 | 大成建設株式会社 | Wall body, method for constructing wall body and remaining formwork |
JP6339979B2 (en) * | 2015-07-27 | 2018-06-06 | 會澤高圧コンクリート株式会社 | Precast concrete foundation |
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JPS58188406U (en) * | 1982-06-11 | 1983-12-14 | 株式会社長谷川工務店 | Vertical joint structure of precast concrete wall |
JPS61102939A (en) * | 1984-10-26 | 1986-05-21 | 株式会社 間組 | Connection of precast concrete member |
JPS61162636A (en) * | 1985-01-11 | 1986-07-23 | Kenichi Sasaki | Block for strip footing and method of building strip footing employing said block |
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JP2943083B2 (en) * | 1991-03-08 | 1999-08-30 | 範夫 藤村 | Architectural foundation block structure |
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