System Identification of Tunnel Response to Ground Motion Considering a Simplified Model

Andres Alonso-Rodriguez; Nikolaos Nikitas; Jonathan Knappett; Georgios Kampas; Ioannis Anastasopoulos; Raul Fuentes

doi:10.3389/fbuil.2018.00039

System Identification of Tunnel Response to Ground Motion Considering a Simplified Model

Andres Alonso-Rodriguez, Nikolaos Nikitas, Jonathan Knappett, Georgios Kampas, Ioannis Anastasopoulos, Raul Fuentes (Lead / Corresponding author)

Civil Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

201 Downloads (Pure)

Abstract

This paper presents a simplified model using coupled Bernoulli and shear beams supported by Winkler-type springs for system identification of tunnels subjected to earthquake induced ground motions. The model formulation is introduced and closed-form solutions to the modal characteristic equation and mode shapes are derived. The latter are verified against the results of numerical models. Then, the system identification algorithm is presented, showcasing its ability to recover model parameters when recorded acceleration time histories along the tunnel are compromised by noise and sensor locations are varied. The presented framework can be used to initially and, simply, recover tunnel response when monitoring data is available, or to plan for monitoring campaigns in newly constructed or existing tunnels.

Original language	English
Article number	39
Pages (from-to)	1-11
Number of pages	11
Journal	Frontiers in Built Environment
Volume	4
DOIs	https://doi.org/10.3389/fbuil.2018.00039
Publication status	Published - 20 Jul 2018

Keywords

system identification
simplified models
tunnel seismic response
closed-form solutions
structural monitoring

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10.3389/fbuil.2018.00039Licence: CC BY

Final Published Version
© 2018 Alonso-Rodriguez, Nikitas, Knappett, Kampas, Anastasopoulos and Fuentes. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Final published version, 3.41 MBLicence: CC BY

6 Citations
2 Article
1 Paper

Numerical simulation of large tunnel alignments under seismic loading: The Large Hadron Collider as a case study
Mubarak, A. (Lead / Corresponding author), Knappett, J. & Brown, M., Mar 2025, In: Tunnelling and Underground Space Technology. 157, 14 p., 106315.
Research output: Contribution to journal › Article › peer-review

Open Access
File
12 Downloads (Pure)
Centrifuge and Numerical Investigation of Fault Rupture Interaction with a Three-legged Jack-up Rig Founded on Spudcan Foundations
Oakes, K., Brown, M., Knappett, J. & Anastasopoulos, I., 5 Jul 2022.
Research output: Contribution to conference › Paper › peer-review

Open Access
File
Implications of volume loss on the seismic response of tunnels in coarse-grained soils
Kampas, G. (Lead / Corresponding author), Knappett, J., Brown, M., Anastasopoulos, I., Nikitas, N. & Fuentes, R., 1 Jan 2020, In: Tunnelling and Underground Space Technology. 95, p. 1-14 14 p., 103127.
Research output: Contribution to journal › Article › peer-review

Open Access
File
25 Citations (Scopus)

242 Downloads (Pure)

Cite this

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title = "System Identification of Tunnel Response to Ground Motion Considering a Simplified Model",

abstract = "This paper presents a simplified model using coupled Bernoulli and shear beams supported by Winkler-type springs for system identification of tunnels subjected to earthquake induced ground motions. The model formulation is introduced and closed-form solutions to the modal characteristic equation and mode shapes are derived. The latter are verified against the results of numerical models. Then, the system identification algorithm is presented, showcasing its ability to recover model parameters when recorded acceleration time histories along the tunnel are compromised by noise and sensor locations are varied. The presented framework can be used to initially and, simply, recover tunnel response when monitoring data is available, or to plan for monitoring campaigns in newly constructed or existing tunnels.",

keywords = "system identification, simplified models, tunnel seismic response, closed-form solutions, structural monitoring",

author = "Andres Alonso-Rodriguez and Nikolaos Nikitas and Jonathan Knappett and Georgios Kampas and Ioannis Anastasopoulos and Raul Fuentes",

note = "This work was sponsored by a Newton Fund Initiative, supported jointly by the Engineering and Physical Sciences Research Council of the UK and the National Commission for Scientific and Technological Research of Chile, grant EP/N03435X/1.",

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AU - Alonso-Rodriguez, Andres

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AU - Anastasopoulos, Ioannis

AU - Fuentes, Raul

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N2 - This paper presents a simplified model using coupled Bernoulli and shear beams supported by Winkler-type springs for system identification of tunnels subjected to earthquake induced ground motions. The model formulation is introduced and closed-form solutions to the modal characteristic equation and mode shapes are derived. The latter are verified against the results of numerical models. Then, the system identification algorithm is presented, showcasing its ability to recover model parameters when recorded acceleration time histories along the tunnel are compromised by noise and sensor locations are varied. The presented framework can be used to initially and, simply, recover tunnel response when monitoring data is available, or to plan for monitoring campaigns in newly constructed or existing tunnels.

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KW - simplified models

KW - tunnel seismic response

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KW - structural monitoring

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System Identification of Tunnel Response to Ground Motion Considering a Simplified Model

Abstract

Keywords

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Research output

Numerical simulation of large tunnel alignments under seismic loading: The Large Hadron Collider as a case study

Centrifuge and Numerical Investigation of Fault Rupture Interaction with a Three-legged Jack-up Rig Founded on Spudcan Foundations

Implications of volume loss on the seismic response of tunnels in coarse-grained soils

Cite this