| 摘要 |
<p>PURPOSE: A pile for a lower end part opening and closing type is provided to form a stable foundation structure by securing a front end supporting force, and to reduce a construction cost. CONSTITUTION: A pile for a lower end part opening and closing type comprises a pile main body of a tube shape, a hinge joint part (200), a pair of opening and closing members (300), a pair of hinge members (400), a temporary joint part (440), and a releasing member (500). The pile main body includes an opening part in a lower end part, and a hinge joint part is formed at both sides of a lower center part of the main body. The opening and closing member is combined in the hinge joint part. The lower end part opening part of the main body is opened in a folded state, and the lower end part opening part of the main body is closed in an unfolded state. The hinge member retracts in a folded state of a pair of the opening and closing members, and opens in an unfolded state of a pair of the opening and closing members. The temporary joint part is installed in order to combine each other in a state of retracting a pair of the hinge members. The releasing member is installed in a lower part of a pair of the hinge members. The releasing member releases a bond of the temporary joint part by a rising drive when contacting with a bottom plate of a through hole, and a pair of the hinge members is opened.</p> |
