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Evaluation of innovative sprayed-concrete-lined tunnelling
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Jones, Benoît, Thomas, A. H. (Alun H.), Hsu, Y. S. (Yu Sheng) and Hilar, M. (2008) Evaluation of innovative sprayed-concrete-lined tunnelling. Proceedings of the ICE - Geotechnical Engineering, Vol.161 (No.3). pp. 137-149. doi:10.1680/geng.2008.161.3.137
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Official URL: http://dx.doi.org/10.1680/geng.2008.161.3.137
Abstract
The front-shunt tunnel was the first tunnel of the Terminal 5 project at Heathrow to be constructed, and was the first section of sprayed-concrete-lined (SCL) tunnel to be constructed using the method known as LaserShell. This innovation represented a significant deviation from the methods previously used in SCL construction. Therefore it was subjected to a careful examination before and during construction using sophisticated 3D numerical modelling and monitoring during construction. The paper presents typical results from surface settlement levelling, inclinometers and extensometers, pressure cells and tunnel lining displacement measurements, and comments on the performance of the methods and instruments used. The paper then presents the methodology and typical results of the numerical modelling, and shows that the predictions of displacements and stresses compared well with the field measurements. In terms of the control of ground deformations and structural safety the tunnel performed well.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
| Divisions: | Faculty of Science > Engineering | ||||
| Library of Congress Subject Headings (LCSH): | Tunnel lining -- Mathematical models | ||||
| Journal or Publication Title: | Proceedings of the ICE - Geotechnical Engineering | ||||
| Publisher: | ICE Publishing Ltd. | ||||
| ISSN: | 1353-2618 | ||||
| Official Date: | June 2008 | ||||
| Dates: |
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| Volume: | Vol.161 | ||||
| Number: | No.3 | ||||
| Number of Pages: | 13 | ||||
| Page Range: | pp. 137-149 | ||||
| DOI: | 10.1680/geng.2008.161.3.137 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Southampton |
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