A Closed-Form Solution for the Seismic Racking and Rocking Behavior of Rectangular Tunnels

Gordo Monsó, Carlos and González Galindo, Jesús and Olalla Marañón, Claudio (2019). A Closed-Form Solution for the Seismic Racking and Rocking Behavior of Rectangular Tunnels. "Tunnelling and Underground Space Technology", v. 88 ; pp. 87-97. ISSN 0886-7798. https://doi.org/10.1016/j.tust.2019.03.002.

Description

Title: A Closed-Form Solution for the Seismic Racking and Rocking Behavior of Rectangular Tunnels
Author/s:
  • Gordo Monsó, Carlos
  • González Galindo, Jesús
  • Olalla Marañón, Claudio
Item Type: Article
Título de Revista/Publicación: Tunnelling and Underground Space Technology
Date: June 2019
ISSN: 0886-7798
Volume: 88
Subjects:
Freetext Keywords: Racking, Rocking, Underground, Tunnel, Seismic, Soil-Structure Interaction
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería y Morfología del Terreno
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Current design methodologies for underground structures subjected to earthquake action are based on closed-form 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.

More information

Item ID: 67799
DC Identifier: https://oa.upm.es/67799/
OAI Identifier: oai:oa.upm.es:67799
DOI: 10.1016/j.tust.2019.03.002
Official URL: https://short.upm.es/ow48e
Deposited by: Memoria Investigacion
Deposited on: 26 Jul 2021 13:26
Last Modified: 26 Jul 2021 13:26
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