Resumo

GUTIERREZ-ASTUDILLO, N.C. et al. A Non-Symmetrical Solution Applying a Genetic Algorithm with Natural Crossover for the Structural Optimization of Truss Structures. Ing. invest. y tecnol. [online]. 2012, vol.13, n.3, pp.325-338. ISSN 2594-0732.

In this research it is proposed a genetic algorithm with "natural crossover" that was applied to a continuous-discrete representation in order to optimize truss structures. The objective is to reduce the weight by restraining node displacement and limiting the cross sections to use. The solutions are combined applying two types of crossovers to the same representation, thus allowing to effectively explore the search space. The results are validated by comparing those found herein against those found in current literature for the case of the design of a 70 m span bridge truss structure. Solutions obtained are lighter and with different topology. Additionally, a case study is proposed, a greenhouse roof truss structure, in order to generate an actual application that is built in a practical scale and it is loaded afterwards to verify its strength.

Palavras-chave : non-symmetry; long span truss structure; greenhouse asimetría.