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http://dx.doi.org/10.7734/COSEIK.2020.33.4.217

Optimum Design of Reinforced Concrete Outrigger Wall Opening Using Piecewise Linear Interpolation  

Lee, Hye-Lym (Department of Architecture, Konkuk Univ.)
Kim, Han-Soo (Division of Architecture, Konkuk Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.33, no.4, 2020 , pp. 217-224 More about this Journal
Abstract
In this study, a framework for optimizing the opening in an outrigger wall is proposed. To solve a constrained bounded optimization problem, an in-house finite element program and SQP algorithm in Python SciPy library are utilized. The openings of the outrigger wall are located according to the strut-tie behavior of the outrigger wall deep beam. A linear interpolation method is used to obtain differentiable continuous functions required for optimization, whereas a database is used for the efficiency of the optimization program. By comparing the result of the two-variable optimization through the moving path of the search algorithm, it is confirmed that the algorithm efficiently determines the optimized result. When the size of each opening is set to individual variables rather than the same width of all openings, the value of the objective function is minimized to obtain better optimization results. It was confirmed that the optimization time can be effectively reduced when using the database in the optimization process.
Keywords
tall building; outrigger; web opening; optimum design; sequential quadratic programming;
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