ROTARY PENETRATION STEEL PIPE PILE AND CONSTRUCTION METHOD OF FOUNDATION PILE HAVING FOOT PROTECTION

摘要

PROBLEM TO BE SOLVED: To provide a foundation pile with a small diameter which allows for easy construction and has a large push-in load bearing capacity and pull-out resistance force.

SOLUTION: A rotary penetration steel pipe pile includes a hollow pile body 1 with a closed end and a spiral blade 3 having an outer diameter approximately 2.5 to 3 times larger than the outer diameter of the pile body 1 around the outer periphery in the vicinity of the end of the pile body 1. The vicinity of the end of the pile body 1 or the spiral blade 3 is provided with a discharge hole 7 through which a curable fluid is discharged outward. The discharge hole 7 is connected to a curable fluid supply pipe 6 arranged in the pile body 1 such that the curable fluid is supplied from the ground.

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