STEEL-CEMENT-SOIL COMPOSITE PILES, STEEL TUBE PILES, AND CONSTRUCTION METHODS FOR STEEL-CEMENT-SOIL COMPOSITE PILES

Abstract

The design refers to a steel-cement composite pile, which consists of a cement-soil column extending into the ground from the ground surface, and a steel pipe pile inside the cement-soil column. The steel-cement composite pile comprises several first protrusions with a height of 15 min or more created on the outer perimeter of the steel pipe pile in the pile head region of the steel-cement composite pile, and several second protrusions created at intervals of 75 min or less, within a minimum distance of 3D (D is the outer diameter of the steel pipe pile) from the lower longitudinal head of the steel-cement composite pile.