Interaction Buckling in I-Section Columns

The interaction between local and Euler buckling in an imperfect I-section column produces an adverse effect on its strength. Analytical models based on the effective section method and the finite strip method which account for interaction buckling are compared with tests performed by Kalyanaraman, Pekoz, and Winter (1977). A design method based on the SSRC column curves is proposed to account for the effects of interaction buckling in I-section columns. This design method is also compared with the tests.