Observatorio de I+D+i UPM

Descripción
Current design methodologies for underground structures subjected to earthquake action are based on closedform solutions of the so-called racking coefficient, which relates the soil free-field distortion deformation to the structure distortion deformation. Existent closed-form expressions for this racking coefficient are derived for circular tunnel geometries embedded in an elastic and homogeneous medium, while expressions for rectangular geometries are based on analogies of the circular case. In this paper, a new and intuitive methodology derived from first principles to obtain a closed-form expression for the racking coefficient for rectangular-like tunnel geometries buried at a sufficient depth is presented, and it is shown that it provides a good fit to finite element analyses results. Similarly, a procedure to obtain closed-form expressions for the rocking rotation of the structure, and the racking deformation profile at different distances from the soil-tunnel interface is presented.
Internacional	Si
JCR del ISI	Si
Título de la revista	Tunnelling And Underground Space Technology
ISSN	0886-7798
Factor de impacto JCR	2,418
Información de impacto	Datos JCR del año 2017
Volumen	88
DOI	10.1016/j.tust.2019.03.002
Número de revista
Desde la página	87
Hasta la página	97
Mes	JUNIO
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Esta actividad pertenece a memorias de investigación

• Autor: Carlos Gordo Monso (UPM)
• Autor: Jesus Gonzalez Galindo (UPM)
• Autor: Claudio Olalla Marañon (UPM)

• Creador: Grupo de Investigación: Mecánica de Rocas