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http://dx.doi.org/10.12989/sem.2013.46.6.755

Response transformation factors for deterministic-based and reliability-based seismic design  

Bojorquez, Eden (Facultad de Ingenieria, Universidad Autonoma de Sinaloa, Calzada de las Americas y B. Universitarios s/n)
Bojorquez, Juan (Mecanica Aplicada, Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico)
Ruiz, Sonia E. (Mecanica Aplicada, Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico)
Reyes-Salazar, Alfredo (Facultad de Ingenieria, Universidad Autonoma de Sinaloa, Calzada de las Americas y B. Universitarios s/n)
Velazquez-Dimas, Juan (Facultad de Ingenieria, Universidad Autonoma de Sinaloa, Calzada de las Americas y B. Universitarios s/n)
Publication Information
Structural Engineering and Mechanics / v.46, no.6, 2013 , pp. 755-773 More about this Journal
Abstract
One of the main requirements of the seismic design codes must be its easy application by structural engineers. The use of practically-applicable models or simplified models as single-degree-of-freedom (SDOF) systems is a good alternative to achieve this condition. In this study, deterministic and probabilistic response transformation factors are obtained to evaluate the response in terms of maximum ductility and maximum interstory drifts of multi-degree-of-freedom (MDOF) systems based on the response of equivalent SDOF systems. For this aim, five steel frames designed with the Mexican City Building Code (MCBC) as well as their corresponding equivalent SDOF systems (which represent the characteristics of the frames) are analyzed. Both structural systems are subjected to ground motions records. For the MDOF and the simplified systems, incremental dynamic analyses IDAs are developed in first place, then, structural demand hazard curves are obtained. The ratio between the IDAs curves corresponding to the MDOF systems and the curves corresponding to the simplified models are used to obtain deterministic response transformation factors. On the other hand, demand hazard curves are used to calculate probabilistic response transformation factors. It was found that both approaches give place to similar results.
Keywords
response transformation factors; maximum ductility; maximum interstory drift; steel frames; reliability-based seismic design;
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Times Cited By KSCI : 1  (Citation Analysis)
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