CONCRETE FILLED STEEL TUBULAR PILE-COLUMN INTEGRATED STRUCTURE AND CONSTRUCTION METHOD

Disclosed is a concrete filled steel tubular pile-column integrated structure and a construction method. A thread is welded to a steel tube of a concrete filled steel tubular pile, a lower end of the pile is made into a pointed, cone shape, corollary equipment applies an axial force and torque to a top of the pile at the same time, so as to screw the pile into a foundation, an outer sleeve connects the pile in a lower structure and a column in an upper structure through threaded connection at a pile-column connection position, and all parts for pile-column integrated construction are prefabricated in sections and mounted mechanically. Generally, the pile-column connection position is weak due to a large bending moment, and pile-column integral connection has important engineering significance, and avoids secondary pile-column connection, such that a construction period is shortened, and technical advantages are obvious.