FULL-RANGE ANALYSIS OF ECCENTRIC COMPRESSION OF RC COLUMNS STRENGTHENED WITH THE COMBINATION OF CFRP AND ANGLE STEEL

Based on experimental results,the method for analyzing the eccentric compression behavior of RC columns strengthened with the combination of CFRP and angle steel is investigated.A nonlinear computer code BC was developed.The full-range load-deflection curves are presented,which are consistent with experimental results.The influences of CFRP ratio,angle steel ratio,slenderness ratio and eccentricity to the mechanical properties of the columns are also analyzed.The results indicate that the decreases in the slenderness ratio and the eccentricity,and the increases in the CFRP ratio and the angle steel ratio are of advantage to the ultimate load-bearing capacity and ductility of the columns.In the end,the measures for sticking and anchoring the angle steel and the CFRP to the columns are discussed.The results show that the elastic modulus and thickness of the adhesive layer,the thickness of the angle steel and post-embedded bars are the main influencing factors on the columns' bonding and greatly affect the failure mode and the bearing capacity of the columns.