EXPERIMENTAL STUDY ON HRBF500 AND FIBER REINFORCED CEMENTITIOUS COMPOSITES HOLLOW COLUMNS UNDER ECCENTRIC LOADING

Eight HRBF500 and fiber reinforced cementitious composites hollow columns under eccentric loading were tested to study the effects of experimental parameters,such as eccentricity distance,reinforcement ratio and fiber types,the load-deflection curves,the load-strain curves of the steel bar,the load-strain curves of the cementitious materials and failure characters;and the plane cross-section assumption was verified．The results showed that HRBF500 and fiber reinforced cementitious composites hollow columns had good deformation capacity and high bearing capacity under eccentric loads．Their design method was generally consistent with normal high strength concrete columns,satisfying the requirements of current code GB 50010－2010．