Please use this identifier to cite or link to this item: https://doi.org/10.3233/978-1-60750-031-5-413
Title: Use of vertical reinforcement to reduce ground movement due to tunnelling
Authors: Juneja, A.
Hegde, A.
Lee, F.H. 
Keywords: Centrifuge modelling
Sand tests
Tunnel
Vertical reinforcement
Issue Date: 2009
Source: Juneja, A.,Hegde, A.,Lee, F.H. (2009). Use of vertical reinforcement to reduce ground movement due to tunnelling. Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering 1 : 413-416. ScholarBank@NUS Repository. https://doi.org/10.3233/978-1-60750-031-5-413
Abstract: This paper examines centrifuge results of tunnel excavation adjacent to vertical reinforcement in small-scale sand beds. The tunnel walls were represented by pressurised rubber liner. Results of 6 tests conducted at 50g using large diameter centrifuge at IITBombay are reported. Depth of the tunnel and spacing between the tunnel axis and reinforcement are the variables investigated. To simulate tunnel excavation, hydraulic pressure on walls of the rubber liner was decreased in steps whilst the centrifuge was in-flight. The magnitude and extent of settlement trough with increase in ground loss was captured using potentiometers and pore pressure transducers placed in vicinity of the tunnel axis. From the limited test observations, vertical rods of not more than 14-times the particle size is shown to affect the width of settlement trough. © 2009 IOS Press.
Source Title: Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/74419
ISBN: 9781607500315
DOI: 10.3233/978-1-60750-031-5-413
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