Abstract
Theoretical studies are presented on the prediction of bending strength of a wide-flange beam-column subjected to bi-directional bending. This study has two main objectives. The first is to find the influence of the out of plane disturbance to the design of a beam-column subjected to bi-directional bending. The other is to propose design formula. When the P-δ effect predominates, the column collapses at the mid-span, otherwise the column collapses at the member end. Bending strength of a beam-column subjected to bi-directional bending is obtained as the smallest value among the loads corresponding to collapse at the end or at the mid-span. Proposed formula shows a good agreement with precise numerical solutions and/or experimental results.
