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Título del libro: Proceedings Of The 17th International Conference On Soil Mechanics And Geotechnical Engineering: The Academia And Practice Of Geotechnical Engineering
Título del capítulo: Seismic performance evaluation of a deep foundation system build in the lake zone area, in Mexico City

Autores UNAM:
JUAN MANUEL MAYORAL VILLA; MANUEL JESUS MENDOZA LOPEZ; MIGUEL PEDRO ROMO ORGANISTA;

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Autores externos:

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Idioma:
Inglés

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Año de publicación:
2009

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Palabras clave:

Box foundations; Bridge supports; Civil engineering structures; Contact pressures; Deep foundations; Dynamic property; Economical design; Finite element models; Foundation systems; Free fields; Friction piles; Future performance; Mexico City; Model prediction; Pile head; Seismic performance evaluation; Seismic reponse; State variables; Static and dynamic loading; Behavioral research; Bridges; Cable stayed bridges; Civil engineering; Dynamic loads; Earthquakes; Geotechnical engineering; Lakes; Loading; Numerical models; Piles; Seismic response; Soil mechanics; Soils; Subway stations; Foundations

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Resumen:

Seeking for developing both safe and economical designs, calibration of numerical models of soil-foundation-structure system is essential to improve the prediction of the seismic response of civil engineering structures during severe earthquakes. In difficult subsoil conditions, as those prevailing in Mexico City, the well-suited approach to calibrate these models is from data gathered from real-scaled instrumented structures. This paper presents the numerical modeling of one of the supports of a large vehicular bridge, part of a subway station, built 12 years ago in the so-called lake zone area, in Mexico City. This support has a mixed foundation system, consisting of a box foundation and friction piles, which was instrumented since its construction to monitor its response under static and dynamic loading. Ever since, several state variables that control the behavior of this type of foundation have been measured, including the evolution of contact pressures between the lower mat of the box foundation and the soil, the distribution over time acting on some pile heads, the pore pressure in the soil underneath the foundation, and the free field and soil-foundation-structure system seismic response. The seismic performance evaluation was conducted with finite element models of the system to estimate the bridge support response exhibited during the January 1 st, 2004, Guerrero Coast earthquake (M w=6.3). The computed response was compared with the measured response in the free field, box foundation, and structure, establishing the model prediction capabilities. Change in dynamic properties due the regional subsidence was accounted for in the analysis, and estimations of future performance were established. © 2009 IOS Press.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9781607500315
Editorial:
IOS Press

Tipo de producto:
Conference Paper

DOI:
10.3233/978-1-60750-031-5-1213