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CORE MATERIAL FOR SMALL-DIAMETER CAST-IN-PLACE PILE
To provide a core material for a small-diameter cast-in-place pile which can externally fit and fix a non-closed type composite spacer to a plurality of kinds of reinforcement core materials having different dimensions while reducing the number of components of the core material.SOLUTION: A core material for a small-diameter cast-in-place pile includes a reinforcement core material 20 made of a dimple steel pipe, a composite spacer 30 mounted on its outer peripheral surface, and means 34 for restricting the composite spacer 30, wherein the composite spacer 30 has a pair of split cylinders 31 and 31 capable of holding the reinforcement core material 20 in a non-closed state, a flange material 32 projecting in a circumferential direction on the outer peripheral surfaces of each of the split cylinders 31, and a plurality of interval holding parts radially projecting from the outer peripheral surface of the split cylinders 31, the pair of split cylinders 31 and 31 are connected so as to be openable/closable through a hinge formed between a pair of flanges, and when the pair of split cylinders 31 and 31 are externally fit to the reinforcement core material 20 and closed, the inner diameter of the composite spacer 30 is set to be smaller than the outer diameter of the reinforcement core material 20 so as to form an adjustment gap 35 between the pair of flanges positioned on the opening side of the split cylinders 31.SELECTED DRAWING: Figure 1
【課題】芯材の構成部品点数を削減しつつ、寸法の異なる複数種類の補強芯材に対して非閉合式の複合スペーサを外装して固定できる、小口径場所打ち杭用芯材を提供する。【解決手段】ディンプル鋼管製の補強芯材２０と、その外周面に装着した複合スペーサ３０と、複合スペーサ３０の拘束手段３４とを具備し、複合スペーサ３０は補強芯材２０に対して非閉合状態で抱持可能な一対の分割筒３１，３１と、各分割筒３１の外周面で周方向に突設した鍔材３２と、分割筒３１の外周面に放射状に突設した複数の間隔保持部とを具備し、一方のフランジ間に形成したヒンジを介して一対の分割筒３１，３１を開閉可能に連結し、一対の分割筒３１，３１を補強芯材２０に外装して閉じたときに、分割筒３１の開口側に位置する一対のフランジ間に調整隙間３５を形成するように、複合スペーサ３０の内径を補強芯材２０の外径に対して小径にした。【選択図】図１
CORE MATERIAL FOR SMALL-DIAMETER CAST-IN-PLACE PILE
To provide a core material for a small-diameter cast-in-place pile which can externally fit and fix a non-closed type composite spacer to a plurality of kinds of reinforcement core materials having different dimensions while reducing the number of components of the core material.SOLUTION: A core material for a small-diameter cast-in-place pile includes a reinforcement core material 20 made of a dimple steel pipe, a composite spacer 30 mounted on its outer peripheral surface, and means 34 for restricting the composite spacer 30, wherein the composite spacer 30 has a pair of split cylinders 31 and 31 capable of holding the reinforcement core material 20 in a non-closed state, a flange material 32 projecting in a circumferential direction on the outer peripheral surfaces of each of the split cylinders 31, and a plurality of interval holding parts radially projecting from the outer peripheral surface of the split cylinders 31, the pair of split cylinders 31 and 31 are connected so as to be openable/closable through a hinge formed between a pair of flanges, and when the pair of split cylinders 31 and 31 are externally fit to the reinforcement core material 20 and closed, the inner diameter of the composite spacer 30 is set to be smaller than the outer diameter of the reinforcement core material 20 so as to form an adjustment gap 35 between the pair of flanges positioned on the opening side of the split cylinders 31.SELECTED DRAWING: Figure 1
【課題】芯材の構成部品点数を削減しつつ、寸法の異なる複数種類の補強芯材に対して非閉合式の複合スペーサを外装して固定できる、小口径場所打ち杭用芯材を提供する。【解決手段】ディンプル鋼管製の補強芯材２０と、その外周面に装着した複合スペーサ３０と、複合スペーサ３０の拘束手段３４とを具備し、複合スペーサ３０は補強芯材２０に対して非閉合状態で抱持可能な一対の分割筒３１，３１と、各分割筒３１の外周面で周方向に突設した鍔材３２と、分割筒３１の外周面に放射状に突設した複数の間隔保持部とを具備し、一方のフランジ間に形成したヒンジを介して一対の分割筒３１，３１を開閉可能に連結し、一対の分割筒３１，３１を補強芯材２０に外装して閉じたときに、分割筒３１の開口側に位置する一対のフランジ間に調整隙間３５を形成するように、複合スペーサ３０の内径を補強芯材２０の外径に対して小径にした。【選択図】図１
CORE MATERIAL FOR SMALL-DIAMETER CAST-IN-PLACE PILE
小口径場所打ち杭用芯材
OGATA TAKEFUMI (author) / MURAKAMI HIROYASU (author)
2023-04-06
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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