| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical screwed type pile constituted by attaching a blade to a distal end or its vicinity of a steel pipe and can penetrate into the ground by giving rotating force to the steel pipe to bury it in the ground and achieve excellent durability and construction property. SOLUTION: In this screwed type pile, a reinforcing rigid member 40 for reinforcing the steel pipe 2 is attached to a first step part 4a to which a start end and a terminal of the spiral blade 10 are attached. COPYRIGHT: (C)2009,JPO&INPIT
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