Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

The combined effect of time with the non-homogenous mechanical and hydraulic behaviors of the various intermediate layers between the foundation soil and the tracks often result in undesired deformation and misalignment of the tracks, which can compromise performance of the railway tunnel. The tunnel of Saint-Louis les Aygalades is located on the Paris Marseille mainline. This 476 m long tunnel was built in 1847, from the two portals and two intermediate shafts, under a maximum cover of 35 m in the tertiary formation of Stampien. The section of the tunnel consists of an elliptical vault with large vertical axis resting on the curved sidewalls and supported by a circular invert. The tunnel was entirely lined in masonry bricks with lime mortar. This paper presents an investigation into the behavior of the tracks in the Saint-Louis les Aygalades railway tunnel. The evolution of the tracks misalignment generated the undulatory deformation of the rails, which was caused by the non-homogeneity of the mechanical and hydraulic properties of the track structure. The modeling of the phases of construction and the time effect using the finite element analysis method made it possible to consider the structural role of the invert in the global stability of the tunnel liner. The study allowed the identification of possible causes of the track misalignment and determination of an appropriate solution. Corrective measures were assessed and applied.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fifth Conference

Publisher

University of Missouri--Rolla

Publication Date

4-13-2004

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 13th, 12:00 AM Apr 17th, 12:00 AM

Analysis of the Invert Damage and Its Rehabilitation Design. The Saint Louis Les Aygalades Tunnel Case Study

New York, New York

The combined effect of time with the non-homogenous mechanical and hydraulic behaviors of the various intermediate layers between the foundation soil and the tracks often result in undesired deformation and misalignment of the tracks, which can compromise performance of the railway tunnel. The tunnel of Saint-Louis les Aygalades is located on the Paris Marseille mainline. This 476 m long tunnel was built in 1847, from the two portals and two intermediate shafts, under a maximum cover of 35 m in the tertiary formation of Stampien. The section of the tunnel consists of an elliptical vault with large vertical axis resting on the curved sidewalls and supported by a circular invert. The tunnel was entirely lined in masonry bricks with lime mortar. This paper presents an investigation into the behavior of the tracks in the Saint-Louis les Aygalades railway tunnel. The evolution of the tracks misalignment generated the undulatory deformation of the rails, which was caused by the non-homogeneity of the mechanical and hydraulic properties of the track structure. The modeling of the phases of construction and the time effect using the finite element analysis method made it possible to consider the structural role of the invert in the global stability of the tunnel liner. The study allowed the identification of possible causes of the track misalignment and determination of an appropriate solution. Corrective measures were assessed and applied.