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Three Dimensional Load Analysis of Tunnel Linings Including Weathering Processes of the Shotcrete

Dreidimensionale Lastanalysen von Tunnelschalen unter Einbeziehung von Verwitterungsprozessen von Spritzbeton

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Zusammenfassung

In dieser Studie wurde in einem dreidi mensionalen Modell das Auffahren eines Tunnels und die Installation der Spritzbetonschale simuliert. Das Ziel lag in der Vorhersage der Verformungen und der Kräfte in der Spritzbetonschale während eines NATM-Vortriebs im Fels unter Verwendung eines Mohr-Coulomb Materialmodells. Weiters wurde das Langzeitverhalten des primären Ausbaus durch Reduktion der Festigkeitsparameter der Spritzbetonschale modelliert und dessen Einfluss auf die Innenschale untersucht.

Summary

In this study a three-dimensional finite element model was applied to simulate the process of tunnel excavation and lining installation. The emphasis was placed on the prediction of deformation and forces acting on the primary shotcrete lining during a NATM excavation in rock modelled with Mohr-Coulomb elasto-plastic material behaviour. Further investigations and development of the model were done by taking into consideration long-time behaviour of the primary support elements by decreasing the strength and stiffness parameters of the shotcrete shell and the influence on the final lining caused by this.

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Authors and Affiliations

  1. Chair of Subsurface Engineering, Montanuniversität Leoben, Leoben, Austria

    Muhammad Usman, Christian Volderauer, Gunter Gschwandtner & Robert Galler

Authors
  1. Muhammad Usman
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  2. Christian Volderauer
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  3. Gunter Gschwandtner
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  4. Robert Galler
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Corresponding author

Correspondence to Christian Volderauer.

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Usman, M., Volderauer, C., Gschwandtner, G. et al. Three Dimensional Load Analysis of Tunnel Linings Including Weathering Processes of the Shotcrete. Berg Huettenmaenn Monatsh 156, 487–491 (2011). https://doi.org/10.1007/s00501-011-0043-y

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  • DOI: https://doi.org/10.1007/s00501-011-0043-y

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