BOLTED CONNECTION STRUCTURE BETWEEN CONCRETE-FILLED STEEL MEMBER AND STEEL MEMBER

PROBLEM TO BE SOLVED: To provide a high-strength bolted connection structure between a concrete-filled steel pipe column and a joint metal member, which can be easily constructed by virtue of structural simplification and which inexpensively enhances connection performance, and a washer and a nut, which realize the bolted connection structure. SOLUTION: In the high-strength bolted connection structure between the rectangular or circular concrete-filled steel pipe column and an H-shaped cross-section beam, using a head-fastening high-strength bolt and the joint metal for joining the H-shaped cross-section beams together, the washer with an anchor function or a nut with an anchor function is arranged on the inside of a bolt hole of a steel pipe column; the head-fastening high-strength bolt is inserted into the bolt hole from an outer surface of the joint metal which abuts on the steel pipe column, and screwed to the nut, so that the joint metal can be high-strength-bolt-connected to the steel pipe column by head fastening; and concrete is filled into the steel pipe column and solidified, so that an anchor part of the washer or an anchor part of the nut can be embedded in the solidified concrete. COPYRIGHT: (C)2005,JPO&NCIPI