| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an erection method of an underground piled column capable of improving an adhesion degree between hardened concrete and the underground piled column by reducing the process number.SOLUTION: A tremie pipe 4 for installing the underground pile column 5 is inserted into a hole 2 excavated in the ground with the underground piled column 5 side as the tip, and while placing concrete C in the hole 2 by using the tremie pipe 4, the underground piled column 5 is pulled up to the predetermined depth while maintaining a state of inserting a lower end part of the underground piled column into the placed concrete C, and the underground piled column 5 is held in the predetermined depth, and the tremie pipe 4 is removed from the underground piled column 5, and the tremie pipe 4 is extracted from the inside of the hole 2.</p> |
