LOAD CARRYING CAPACITY OF STEEL SQUARE TUBE-TO-HIGH STRENGTH PRECAST CONCRETE COMPOSITE COLUMNS

Abstract

This paper reports the result of beam column test of a new type composite column. High-strength four precast-concrete panels are fixed to the steel square tube with high strength headed studs. The precast-concrete panels are reinforced with steel fibers. Composite columns were tested under the constant axial force and anti-symmetrical repeated moment. It is confirmed that the bending stiffness and the strength of the composite column are much greater than those of a steel column. The basic design concept of the column is also presented based on the test results.