| Title |
Optimal Design of Tall Steel Frameworks by Dual Method |
| Abstract |
This study presents a dual method using the approximation concepts for the optimal design of tall steel buildings subject to lateral drift constraints. Dual method can replace the primary optimization problem with a sequence of approximate explicit subproblems. Since each subproblem is convex and separable, it can be efficiently solved by using a dual formulation. Specifically, this study considers the discrete-optimization problem due to the commercial standard steel sections to select member sizes. The results by the proposed method will be compared with those of the conventional optimality criteria method. |