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Título del libro: Geotechnical Engineering In The Xxi Century: Lessons Learned And Future Challenges
Título del capítulo: Behavior of a Skirt-Type Foundation for a Metro Railroad Overpass on the Mexico City Soft Clay, During the M-w 8.2 Gulf of Tehuantepec Earthquake, on September 7th 2017

Autores UNAM:
ENRIQUE MARTINEZ HERNANDEZ;

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Autores externos:

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Idioma:

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Año de publicación:
2019

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Palabras clave:

Innovative foundation; dynamic measurements; very soft clay; skirt-type foundation; dynamic response

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Resumen:

Line 12 of the subway system (Metro) connects the southeast and the southwest zones of Mexico City. Along its length of 25 km different solutions were used such as tunnels, box-type foundations, superficial tracks and viaducts. The railroad overpass crosses a zone with soft clay subsoil having low shear strength and high compressibility. Some of the supports in this zone were founded upon using an innovative solution. It is constituted by four cast-in-place peripheral concrete walls with thickness of 60 cm and length of 10.5 m, forming in plan a square of 6.5 m on each side. These walls are connected to a prefabricated concrete footing-column monolithically cast to support the superstructure. This skirt-type foundation is locally known as ``inverted glass'' or ``structured cell''. Description is made in this paper of the dynamic behavior of support ZP-16 having this type of foundation, based on its measured geotechnical variables and accelerations recorded during the M-w 8.2 earthquake occurred on September 7, 2017, with epicenter in the Gulf of Tehuantepec. No damage occurred in the system. The time series of the geotechnical variables monitored during this earthquake indicate transient cyclic processes.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9781643680316
Editorial:
IOS PRESS

Tipo de producto:
Proceedings Paper

DOI:
10.3233/STAL190263