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METHOD AND DEVICE FOR CIRCUMFERENTIALLY INTRODUCING PRESTRESS, AND REINFORCED CONCRETE BODY
PROBLEM TO BE SOLVED: To provide a method and a device for introducing prestress in a circumferential direction of a reinforced concrete body.SOLUTION: A reaction receiving member is arranged in such a manner as to be extended in the same direction as that of a main reinforcement 11, in a position to abut on an inside part of a reinforced concrete body 1. An inner end of a pushing member 20 abuts on the reaction receiving member, and an outer end of the pushing member 20 abuts on a shear reinforcement 12. Furthermore, the pushing member 20 is extended to push the shear reinforcement 12 outward and put the shear reinforcement 12 in a tensioned state. In the tensioned state, concrete 10 is placed. After the concrete is hardened, the reaction receiving member is extracted and removed.
【課題】鉄筋コンクリート体の周方向にプレストレスを導入する方法及び装置を提供する。【解決手段】鉄筋コンクリート体１の内側部に当たる位置に、反力受け部材を主筋１１と同方向に延びるように配置し、押し部材２０の内端部を反力受け部材に当て、かつ押し部材２０の外端部を剪断補強筋１２に当て、さらに、押し部材２０を伸長させることによって剪断補強筋１２を外方向に押して剪断補強筋１２を緊張させ、この緊張状態で、コンクリート１０を打設し、コンクリートの硬化後、反力受け部材を引き抜いて撤去する。【選択図】図１
METHOD AND DEVICE FOR CIRCUMFERENTIALLY INTRODUCING PRESTRESS, AND REINFORCED CONCRETE BODY
PROBLEM TO BE SOLVED: To provide a method and a device for introducing prestress in a circumferential direction of a reinforced concrete body.SOLUTION: A reaction receiving member is arranged in such a manner as to be extended in the same direction as that of a main reinforcement 11, in a position to abut on an inside part of a reinforced concrete body 1. An inner end of a pushing member 20 abuts on the reaction receiving member, and an outer end of the pushing member 20 abuts on a shear reinforcement 12. Furthermore, the pushing member 20 is extended to push the shear reinforcement 12 outward and put the shear reinforcement 12 in a tensioned state. In the tensioned state, concrete 10 is placed. After the concrete is hardened, the reaction receiving member is extracted and removed.
【課題】鉄筋コンクリート体の周方向にプレストレスを導入する方法及び装置を提供する。【解決手段】鉄筋コンクリート体１の内側部に当たる位置に、反力受け部材を主筋１１と同方向に延びるように配置し、押し部材２０の内端部を反力受け部材に当て、かつ押し部材２０の外端部を剪断補強筋１２に当て、さらに、押し部材２０を伸長させることによって剪断補強筋１２を外方向に押して剪断補強筋１２を緊張させ、この緊張状態で、コンクリート１０を打設し、コンクリートの硬化後、反力受け部材を引き抜いて撤去する。【選択図】図１
METHOD AND DEVICE FOR CIRCUMFERENTIALLY INTRODUCING PRESTRESS, AND REINFORCED CONCRETE BODY
周方向プレストレス導入方法及び装置、並びに鉄筋コンクリート体
KUWANO ATSUSHI (author)
2015-08-24
Patent
Electronic Resource
Japanese
IPC:
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
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