| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a spiral hoop for a pile, which improves the property of infilling concrete, by securing a long bar-arrangement interval required for the infilling of the concrete, while securing the amount of the arrangement of the necessary spiral hoop, and a construction method for an RC pile using the spiral hoop for the pile. SOLUTION: The spiral hoops 2 for the pile are spirally arranged on the outer peripheries of a plurality of main reinforcements 1 in the axial direction of the main reinforcement 1. The spiral hoop 2 is formed in such a manner that a plurality of parts 2a, in which the plurality of hoops are wound in a superposed state, and a plurality of parts 2b, in which the single hoop is wound, are alternately arranged in the axial direction of the main reinforcement 1. The part 2a is formed by bundling the plurality of hoops in the state of making them superposed on the outer periphery of the main reinforcement 1. The part 2b is formed of the single hoop. The parts 2a and 2b are formed of a single round bar or deformed bar in such a shape as to spirally continue in the axial direction of the main reinforcement 1. COPYRIGHT: (C)2008,JPO&INPIT
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