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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: Damages on linear structures induced by regional subsidence of Mexico City

Autores UNAM:
NORMA PATRICIA LOPEZ ACOSTA; GABRIEL YVES ARMAND AUVINET GUICHARD; JUAN FELIX RODRIGUEZ REBOLLEDO;
Autores externos:

Idioma:
Inglés
Año de publicación:
2009
Palabras clave:

Beam; Continuous beams; Elastic properties; Geotechnical; Hard soils; Linear structures; Longitudinal settlement; Me-xico; Mexico City; Short periods; Soft soils; Soil-Structure Interaction effects; Subway systems; Concrete construction; Finite element method; Fourier series; Geotechnical engineering; Lakes; Soil mechanics; Soils; Subways; Subsidence


Resumen:

The regional subsidence of the Lake Zone of the valley of Mexico affects the city subway system, and in particular, the Guelatao-Los Reyes portion of Line "A". In this site, soils with contrasting properties are found: hard soils associated to the presence of hills and mountains, and soft soils, mainly the clays of the Lake Zone. The paper presents different geotechnical features of the site and a brief description of the subway box-type concrete structure. The irregular settlements of the subsoil along the line have produced different types of damages on the structure. A simple methodology for modeling the soil-structure interaction effects on this site is presented. In this analysis the structure is represented as a continuous beam with elastic properties using the Finite Element Method. The longitudinal settlement profile of the soil is represented by a Fourier series. It is concluded that harmonics with relatively short periods (less than 100 meters) are the most pernicious for the structure of this system. © 2009 IOS Press.


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