Time-dependent performance of Dublin Port Tunnel
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Published version
Date
2020-08
Authors
Wang, Chao
Friedman, Miles
Li, Zili
Journal Title
Journal ISSN
Volume Title
Publisher
Civil Engineering Research Association of Ireland
Published Version
Abstract
It is widely observed that existing tunnels deform and deteriorate over time due to various factors. Among them, tunnel lining permeability plays a significant role. In practice, the development of lining cracks and adjustment of drainage system may gradually alter the permeability of tunnel lining and water drainage path around a tunnel with time. Nevertheless, past investigations usually assume unchanged lining permeability during the whole life of a tunnel but fail to take time-dependent aging process into consideration. In this study, a set of hydro-mechanical coupled analyses is conducted to evaluate the effect of time-dependent crack development on the behaviour of a cross passage twin-tunnel section in Dublin Port Tunnel. The numerical results compare the transverse and longitudinal settlement profiles above the twin-tunnel with and without cross passage. The deformational characteristics of tunnel lining subject to the influence of the time-dependent permeability change are also analysed, which brings more insights into the understanding of aging tunnel structures.
Description
Keywords
Time-dependent lining permeability , Cross passage , Tunnel performance , Hydro-mechanical coupled analysis
Citation
Wang, C., Friedman, M. and Li, Z. (2020) 'Time-dependent Performance of Dublin Port Tunnel', Civil Engineering Research in Ireland 2020: Conference Proceedings, Cork Institute of Technology, 27-28 August, pp. 659-664. isbn: 978-0-9573957-4-9. Available at: https://sword.cit.ie/monographs/1