本发明涉及一种从动混凝土桩及其施工方法，其通过将混凝土桩体的底端的前端支撑部分通过残余粘土层驱动到自然地面来提高桩的支撑力 根据桩的插入或旋转，钻孔的底部。 根据本发明的被驱动混凝土桩由向下的压力或旋转力驱动并支承在钻孔底部的天然地面中，包括：混凝土桩体，其中部具有中空部分，开口 较低的部分; 以及前端支撑部，其形成为具有开放中心的形状的所述混凝土桩体的底端，并且具有在其内侧和外侧具有倾斜表面的宽顶部和窄底部的横截面，其中， 前端支撑部的底端的宽度小于或等于混凝土桩体厚度的三分之一，其中前端支撑部分的一部分或全部被驱动到自然地面中 钻孔的底部通过钻孔底部的残留粘液。

The present invention relates to a penetration concrete pile and its construction method that could be through the remaining slime layer of the tip support is at the bottom of the concrete pile body puncturing the bottom of the hole intruded on wonjiban improve the bearing capacity of the pile according to the press or rotation of the pile.
The present invention as being intruded concrete piles are not intrusive to the ground by drilling holes lower down the input voltage or rotational force, the penetration of concrete piles, hollow part is formed in the middle and the lower body is open piles; And the center is formed in an open shape having a cross-section formed gwangha consultation on the inclined inner and outer sides to be provided at a lower end of the concrete pile body, the width of the bottom is formed to less than one third of the thickness of perforated concrete pile body through the remainder of the slime hole bottom line is that only a portion or all of the lower penetration in wonjiban; Characterized in that consists of.