Method of supporting steel pipe buried piles and steel pipe buried pile

摘要

PROBLEM TO BE SOLVED: To carry out excavation in a well-balanced manner to enhance the construction accuracy, to strongly support a steel pipe bored precast pile in the ground, and to increase the amount of construction works by using excavating vanes suitable for geological features, when the steel pipe bored precast pile is rotated to be buried in the ground. ;SOLUTION: A steel pipe bored precast pile 1 has a pile main body 2 having an opening at a lower edge thereof, and a pair of excavating blades 3 formed at the front end of the pile main body 2. The excavating blades 3 each have a spiral pile propeller vane 4 and an excavating vane 5 rigidly fixed to the front end of the pile propeller vane 4, and the blades 3 are formed at symmetrical positions with respect to an axial center of the pile main body 2. The excavating vanes 5, 5 are integrally formed via the body portion, and formed so as to taper down and to slant with respect to a front end surface 2a of the pile main body 2.;COPYRIGHT: (C)2001,JPO