Resumen

HIDALGO TOXQUI, Juan P.  y  RUIZ GOMEZ, Sonia E.. Factor de reducción β por incremento de amortiguamiento viscoso, para estructuras desplantadas sobre roca. Ing. sísm [online]. 2010, n.83, pp.1-23. ISSN 0185-092X.

A simple mathematical expression to obtain the damping factor β is presented. It can be used to reduce the spectral ordinates in order to design structures with added viscous damping. Factor β is obtained from the analysis of single-degree-of-freedom-systems with elastic-linear and, alternatively, with elastoplastic behavior, using two probabilistic approaches. The systems are located on firm soil. In both types of analyses different percentages of critical damping in the structures are used (between 5 and 30%). The equation proposed is compared with expressions published in Mexico and with that recommended by FEMA 450.

Palabras llave : Reduction factor; viscous damping; seismic design spectrum; firm ground.

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