Two‐Level Approach to Design of Short Concrete Columns
Publication: Journal of Structural Engineering
Volume 117, Issue 12
Abstract
A new strategy is presented to optimize the design of short concrete columns of general shape, subjected to multiple loading conditions. This strategy consists of decomposing the problem into two subproblems. In the lower‐level problem, the deformations are fixed and the reinforcement is optimized. The higher‐level problem finds the deformations that correspond to the minimum possible total steel area. This approach is particularly effective because the lower‐level problem is a linear programming problem involving most of the variables. The higher‐level problem is not continuously differentiable, and a solution is obtained through the application of a bundle method. The examples presented herein demonstrate the efficiency of the proposed approach, which reduces the computation time to less than one‐third of that required by the original, undecomposed problem.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 12 • December 1991
Pages: 3570 - 3586
Copyright
Copyright © 1991 ASCE.
History
Published online: Dec 1, 1991
Published in print: Dec 1991
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