Otimização de pilares de concreto armado mediante uniformização do índice de confiabilidade / Optimization of reinforced concrete columns and calculation of the index of reliability

AUTOR(ES)

Isabella Andreczevski Chaves

DATA DE PUBLICAÇÃO

2004

RESUMO

Currently, it searches minimization of the costs for a structure that satisfies the security principles, with respect to the states use and rupture limits, and the impositions of norms techniques. However, no structure is total insurance. The project involves uncertainties, therefore it in such a way has variations in loading how much in the resistant capacity and rigidity of the structure. In this way, calculation models that if based on sufficiently simple hypotheses are being substituted for models that consider the variabilities of the structural parameters and the requests, consequently, get a more reliability and realistic evaluation of the last capacity of the structure. In the practical one, in structures that take care of to the basic requirements of security, hardly the economy degree is verified. Thus, through techniques of mathematical optimization and statistical concepts, a computational program was developed for the determination of the cross section of columns of reinforced concrete with the minimum cost and the determination of the index of reliability of this structure for a state has limited

ASSUNTO(S)

otimização estruturas optimization reinforced concrete concreto armado structures confiabilidade columns reliability statistics pilares estatística

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