| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a construction method for a knotted cast-in-place concrete pile, which enables the efficient and easy construction of the knotted cast-in-place concrete pile having an outer periphery of a pile body provided with a knot part spirally continuing in a pile axis direction.SOLUTION: A casing A for pile construction, in which a tip of a casing body 1 is provided with an enlarged blade 3 and a bottom cover 4, is pressed to a predetermined depth into ground while being rotated. After concrete e is charged into the casing body 1, the casing A for pile construction is gradually extracted while being inversely rotated. Concurrently with that, the concrete e within the casing body 1 is infilled into a columnar cavity part f and a spiral cavity part f, which are formed by the casing body 1 and the enlarged blade 3.</p> |
