Optimum Design of Braced Steel Space Frames Using Teaching Learning Based Optimization

Abstract

In this study, optimum design of braced steel space frames is obtained via a novel metaheuristic method, teaching learning based optimization. This algorithm method consists of the two basic phases. The first phase is called as teaching; In this phase, the knowledge interaction occurs between students and teacher. In the second phase, learning phase, the knowledge interaction occurs among students in the class. Optimum profiles are selected among 128 W taken from American Institute of Steel Construction (AISC). The constraints imposed on the frame example are stress constraints as stated in AISC-ASD specifications, geometric constraints and displacement constraints. To obtain optimum solutions, a program is coded in MATLAB programming to incorporate with SAP2000 - Open Application Programming Interface (OAPI). The results are compared through tables and figures. The results indicate that teaching learning based optimization method and MATLAB SAP2000 OAPI technique are applicable even for complex problems and present practical solutions.

Keywords

• braced steel space,teaching learning based optimization,s Optimum design,braced steel space

References

1. Rao, R.V., Savsani, V.J. and Vakharia, D.P. (2011), “Teaching-learning-based optimization: A novel method for constrained mechanical design optimization problems”, Computer-Aided Design, 43(3), 303-315.
2. Togan, V. (2012), “Design of planar steel frames using teaching–learning based optimization”, Eng. Struct., 34, 225-232.
3. Rao, R.V. and Patel, V. (2013), “An improved teaching-learning-based optimization algorithm for solving unconstrained optimization problems”, Scı. Iran. 20 (3), 710–720.
4. Dede, T. and Ayvaz, Y. (2013), “Structural optimization with teaching-learning-based optimization algorithm”, Struct. Eng. Mech., Int. J., 47(4), 495-511.
5. Artar, M. (2016), “Optimum design of braced steel frames via teaching learning based optimization”, Steel Compos. Struct., Int. J.,22(4), 733-744.
6. MATLAB (2009), The Language of Technical Computing; The Mathworks, Natick, MA, USA.
7. SAP2000 (2008) Integrated Finite Elements Analysis and Design of Structures. Computers and Structures, Inc, Berkeley, CA.
8. AISC – ASD (1989), Manual of Steel Construction: Allowable Stress Design, American Institute of Steel Construction, Chicago, IL, USA.

9. ASCE (2005), Minimum design loads for building and other structures, ASCE7-05, New York, NY, USA.
10. TS 498 (1997), Turkish Standard: Design loads for buildings, Ankara, Turkey.