METHOD FOR CONSTRUCTING PRE-BORING STEEL PIPE PILE WITH END SHOE APPARATUS FOR ENLARGING EFFECTIVE SECTION

摘要

PURPOSE: A construction method of a pre-boring steel pipe pile with an end shoe apparatus for enlarging the effective section is provided to improve bearing force, to prevent vibration and noise, and to cut down construction cost by integrally mounting the end shoe apparatus to the steel pipe pile before installing the steel pipe pile and by charging concrete in the steel pipe pile. CONSTITUTION: An auger is installed, and an excavation hole is bored on a ground(20) by rotating the auger. The auger is withdrawn after boring the excavation hole, and a steel pipe pile(40) is installed in the excavation hole. An end shoe apparatus(100) is installed in the end of the steel pipe pile, and the sectional area of the end shoe apparatus is larger than the sectional area of the body of the steel pipe pile to enlarge the effective section of the steel pipe pile. Concrete(31) is poured in the steel pipe pile, and a filler is inserted between the steel pipe pile and the excavation hole.