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Due to limited maintenance budget, effectively spending the available funds for maintaining infrastructures is increasingly sought by asset managers. Tunnel is an essential infrastructure that plays a pivotal role in transportation network, economy, prosperity, social well-being, quality of life and the health of its population. In the light of considerable research that has been or is being undertaken on “aboveground” infrastructure, eg bridges, this threat cannot be more apparent for underground infrastructure such as tunnels. The situation has been exacerbated due to more unknowns and uncertainties relating to the factors such as underground water and soil/rock that affect the operation of tunnel infrastructure. In an ageing tunnel system, various potential deficiencies such as seepage, spalling, crack, delamination, steel corrosion, drainage, convergence and settlement of the lining structure can cause catastrophic life …
Publication date: 
1 May 2008

Chun-Qing Li, Hassan Baji, Mojtaba Mahmoodian, Wei Yang

Biblio References: 
Volume: 161 Issue: 5 Pages: 30-37
Proceedings of the Institution of Civil Engineers-Civil Engineering