| 摘要 |
The present invention relates to a concrete driven pile with an open lower part, capable of easily drilling a remaining slime layer by forming a lower member of a front end supporting unit positioned in the lower part of a concrete pile body into a short pipe shape and improving a bearing force of the pile by inserting the front end supporting unit, of which the upper part is wide and the lower part is narrow, into the natural ground to be supported and to a construction method thereof. The concrete driven pile with an open lower part according to the present invention is inserted and supported in the natural ground under a borehole by a downward press-fitting force or torque. The concrete driven pile with an open lower part includes: the concrete pile body with an open lower part; and the front end supporting unit having an open central part, having a cross section of which the upper part is wide and the lower part is narrow, formed in the lower part of the concrete pile body, and inserted into the natural ground by penetrating through the remaining slime layer at the bottom of the borehole. The front end supporting unit is formed into a shape of which the upper part is wide and the lower part is narrow and has inclined surfaces on the inner and outer sides. The front end supporting unit is composed of: an upper member of which the width of the bottom is equal to or less than two third of the thickness of the concrete pile body; and a pipe-shaped lower member formed in the lower side of the bottom of the upper member to adhere to the upper member. |
