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- W561149249 abstract "In 1989, some bridge structures suffered major damage during the Loma Prieta earthquake in California. Cypress Street Viaduct was a two-level elevated freeway structure which collapsed catastrophically, crushing cars and trucks as the second level pancaked onto the first level. The performance of the viaduct is the particular interest to the bridge design, behavior and research community. The results of time-history analyses indicate that collapse was initiated by a shear failure of the pedestal regions. At the present, two-level elevated viaducts have been built in Mexico City, Mexico. San Antonio Viaduct is part of the transport system, linking Miguel Aleman Viaduct with south Periferico. Seismic areas affect the performance of these structures. Since they could be vulnerable to damage in future earthquakes, they provide an excellent opportunity to evaluate their seismic response and prevent collapse. This research is focused on the study of the behavior and structural response of the concrete frame type viaducts placed in the typical soil of the Mexico Valley. The structures were modeled as an assemblage of small members where they modify their geometrical and mechanical properties. The columns were modeled as constant section members with rigid zones in joint regions, and the post-tensioned box-girders were modeled as tapered members with rigid zones in joint regions. The model was analyzed using six synthetic ground acceleration records to obtain time-histories. The synthetic records were obtained from a stochastic process modulated in amplitude and frequency with evolutionary properties that depend on the characteristics of source (magnitude and distance). The numerical results obtained in this research indicate that procedures implemented in the regulations or codes to estimate the total inelastic deformations do not take into account a rational nonlinear behavior, therefore it provides minor lateral deformations (distortions) than those allowed by RCDF 2004 (Mexican code) with a permanent structural damage." @default.
- W561149249 created "2016-06-24" @default.
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- W561149249 date "2006-01-01" @default.
- W561149249 modified "2023-09-27" @default.
- W561149249 title "Inelastic Response of the San Antonio Viaduct Subjected to Synthetic Ground Acceleration Records" @default.
- W561149249 hasPublicationYear "2006" @default.
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