Resumo

TOLENTINO LOPEZ, Dante; RUIZ GOMEZ, Sonia Elda; TORRES PEREZ-NEGRON, Marco Antonio  e  MONTIEL ORTEGA, Marco Antonio. Confiabilidad de estructuras considerando el daño acumulado en el tiempo. Ing. sísm [online]. 2011, n.84, pp.25-46. ISSN 0185-092X.

A criterion to evaluate the seismic structural reliability considering the accumulation of seismic damage is proposed using a closed mathematical expression. This expression takes into account the variation of the structural capacity and of the demand for a given intensity over time. The formulation considers epistemic uncertainties associated to capacity and demand, and randomness of seismic events. The structural reliability is expressed in terms of the expected number of failures at the end of a time interval, for different limit states. The criterion is exemplified by the analysis of a 10-story building located on soft soil with characteristics similar to those of the Ministry of Communications and Transports site in Mexico City.

Palavras-chave : structural reliability; deterioration; structural demand; cumulative damage.

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