In this study, one existing purlin system which is used in steel roof is optimized by taking into account less cost and bearing maximum load via developed software. This software runs with firefly algorithm which is one of the recent stochastic search tech-niques. One of the metaheuristic techniques, so-called firefly algorithm imitates be-haviors of natural phenomena. Behaviors and communications of firefly are inspired by this algorithm. In optimization algorithm, steel sections, distance between purlins, tensional diagonal braces are determined as design variables. Design loads are taken into account by considering TS498-1997 (Turkish Code) in point of place where structure will be built, outside factors and used materials. Profile list in TS910 is used in selection stage of cross sections of profile. Constraints of optimization are identi-fied in accordance with bending stress, deformation and shear stress in TS648. De-sign variables of optimization are selected as discrete variables so as to obtain appli-cable results. Developed software is tested on existing real sample so; it is evaluated with regard to design and performance of algorithm.
Akpınar ME, Yıldızel SA, Karabulut Y, Doğan E (2017). Simulation opti-mization for transportation system: A real case application. TEM Journal, 6(1), 97-102.
Çiftçioğlu AÖ, Yıldızel SA, Yildirim MS, Doğan E (2017). Wind load de-sign of hangar-type closed steel structures with different roof pitches using Abaqus CAE software. TEM Journal, 6(2), 336-341.
Değertekin SÖ, Hayalioğlu MS, Ülker M (2007). Tabu search based op-timum design of geometrically non-linear steel space frames. Struc-tural Engineering and Mechanics, 27(5), 575-588.
Değertekin SÖ, Hayalioğlu MS, Ülker M (2008). A hybrid tabu-simu-lated annealing heuristic algorithm for optimum design of steel frames. Steel and Composite Structures, 8(6), 475-490.
Değertekin SÖ, Lamberti L, Ülker M (2015). Uzay kafes yapıların ateşböceği algoritması yöntemiyle optimizasyonu. XIX. National Mechanics Congress, Trabzon, Turkey. (in Turkish)
Erdal F, Dogan E, Saka MP (2011). Optimum design of cellular beams using harmony search and particle swarm optimizers. Journal of Constructional Steel Research, 67, 237-247.
Esen Y, Ülker M (2008). Malzeme ve geometrik özellikler bakımdan lineer olmayan çok katlı çelik uzay çerçevelerin optimizasyonu. Journal of the Faculty of Engineering and Architecture of Gazi Uni-versity, 23(2), 485-494. (in Turkish)
Keleşoğlu Ö, Ülker M (2005). Multi-objective fuzzy optimization of space trusses by Ms-Excel. Advances in Engineering Software, 36(8), 549-553.
Lukasik S, Zak S (2009). Firefly algorithm for continuous constrained optimization tasks. Computational Collective Intelligence: Semantic Web, Social Networks and Multiagent Systems, 5796, 97-106.
Mooneghi MA, Kargarmoakhar R (2016). Aerodynamic mitigation and shape optimization of buildings: Review. Journal of Building Engi-neering, 6, 225-235.
Rong JH, Xie YM, Yang X-Y, Liang QQ (2000). Topology optimization of structures under dynamic response constraints. Journal of Sound and Vibration, 234(2), 177-189.
Sonmez M, Sevim O, Kılıc M (2013). Topology optimization of double-curved double-layer grids. 2nd International Balkans Conference on Challenges of Civil Engineering, BCCCE, Tirana, Albania, 1-8.
TS 498 (1997). Calculation Values for the Loads to be considered in the Design of Structural Elements. Turkish Standards Institute, Ankara.
TS 648 (1980). Building Code for Steel Structures. Turkish Standards Institute, Ankara.
TS 910 (2009). Hot Rolled -I- Beams. Turkish Standards Institute, An-kara.
Visual Basic Programing Language (2018). Microsoft Corporation Inc., Redmond, Washington, United States.
Yang XS (2009). Firefly algorithms for multimodal optimization, in sto-chastic algorithms: foundations and applications, 5th International Symposium, SAGA 2009, Sapporo, Japan, 169-178.
Yang XS (2013). Multiobjective firefly algorithm for continuous optimi-zation. Engineering with Computers. 29(2), 175–184.
Yang XS, Cui Z, Xiao R, Gandomi AH, Karamanoglu M (2013). Swarm Intelligence and Bio-Inspired Computation. Elsevier.