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S.M. Nigdeli, G. Bekdas, "Optimum Design of RC Columns According to Effective Length Factor in Buckling", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 231, 2014. doi:10.4203/ccp.106.231

Keywords: reinforced concrete, slenderness, columns, optimization, metaheuristic methods, harmony search..

Summary

In this paper, an optimum design methodology is proposed for slender reinforcedconcrete (RC) columns by employing harmony search (HS). In slender RC columns, second order effects must be taken into account. ACI 318 demonstrates a simplified method for slender columns. In this method, the flexural moment of the column is multiplied with a moment magnification factor. As an optimization application, this study investigates optimum design for different effective length factors in buckling. This factor is varied between 0.5 (the element with fixed support at both ends) and 2.0 (the element with fixed support at bottom and free at upper end) increments of 0.1. The method is shown to be successful in finding the optimum design with minimum cost and slenderness of the columns are effective if the effective length factor in buckling exceeds a value.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 106 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: Paper 231 Optimum Design of RC Columns According to Effective Length Factor in Buckling S.M. Nigdeli and G. Bekdas Department of Civil Engineering, Istanbul University, Avcilar, Istanbul, Turkey doi:10.4203/ccp.106.231 purchase the full-text of this paper Full Bibliographic Reference for this paper S.M. Nigdeli, G. Bekdas, "Optimum Design of RC Columns According to Effective Length Factor in Buckling", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 231, 2014. doi:10.4203/ccp.106.231 Keywords: reinforced concrete, slenderness, columns, optimization, metaheuristic methods, harmony search.. Summary In this paper, an optimum design methodology is proposed for slender reinforcedconcrete (RC) columns by employing harmony search (HS). In slender RC columns, second order effects must be taken into account. ACI 318 demonstrates a simplified method for slender columns. In this method, the flexural moment of the column is multiplied with a moment magnification factor. As an optimization application, this study investigates optimum design for different effective length factors in buckling. This factor is varied between 0.5 (the element with fixed support at both ends) and 2.0 (the element with fixed support at bottom and free at upper end) increments of 0.1. The method is shown to be successful in finding the optimum design with minimum cost and slenderness of the columns are effective if the effective length factor in buckling exceeds a value. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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