Optimal Design of Mixed Structures under Time-history Loading Using Metaheuristic Algorithm

In this paper, an optimum design of concrete-steel mixed frames under time-history loadings was formulated as optimization problem. The behavior a structure is different from the steel and reinforced concrete structures because vertically irregular in their mass, stiffness damping each part. Moreover, current codes available commercial software packages do not present solutions for such structures. Researches have indicated that exhibit higher-mode effects responses are sensitive to relative mass two parts Thus, equivalent static analysis applicable, dynamic has be performed analyze Therefore, earthquake can relatively complicated time-consuming. Because methods these iterative dynamic. main objective find minimum cost while satisfying all constraints. results show proposed procedure ideal obtain subjected loadings. Also, comparison, optimal (RC) frame presented using algorithm.