Last lecture of Week 17 and most of the lectures during Week 18 (16th May to 23rd May) were focused on Ground Settlements, influence of TBM drive on surface buildings and on Segmental lining.
Prof. Stefano Invernizzi, explained the different available models for predictions of greenfield ground movements. Pickhaver [1] has briefly summarized all the semi-emperical, empirical methods and numerical methods in his PhD thesis. Detailed version can be studied in Geodata's book on Mechanized Tunnelling [2]. (related post which I came across recently: Interesting article about empirical estimation and numerical estimation).
Prof. Fritz Gruebl (University of Stuttgart, Germany) and Dr. Davorin Kolic (ITA-Croatia President) gave us an account TBM drive overview (including logistics, ventilation and emergency systems) with an emphasis on Tunnel Induced settlements and Universal Segmental Lining.
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| Models to explain the possibilities of different curve radius using Universal Segments |
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| Prof. Fritz Gruebl's Lecture on TBM Drive & Segmental Lining |
On 22nd May, we had detailed case study analysis of Ceneri Tunnel with the designers from Pini Swiss Engineers, Switzerland. Mr. Davide Merlini, Mr. Francesco Rossi and Mr. Stefano Morandi gave us an overview of the Ceneri Base Tunnel from a designer perspective (from the project conception stage to the construction stage).
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| Case Study on Ceneri Base Tunnel by Pini Swiss Engineers |
On 23rd May, (as explained in an earlier post) we has another case study analysis from a Contractor's perspective.
References:
[1] J. A. Pickhaver, “Numerical Modelling of Building Response to Tunnelling,” University of Oxford, 2006.
[2] V. Guglielmetti, P. Grasso, A. Mahtab, and S. Xu, Mechanized tunnelling in urban areas: design methodology and construction control. CRC Press, 2008.
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