Civil Engineering Association

Tunnels under seismic loading: a review of damage case histories and protection methods

Author: G. Lanzano+ , E. Bilotta, G. Russo | Size: 0.8 MB | Format: PDF | Quality: Unspecified | Publisher: Department of Hydraulic, Geotechnical and Environmental Engineering (DIGA). University of Naples Federico II, Italy and+ SAVA Department, University of Molise, Campobasso, Italy | pages: 10

Underground structures are essential in urban areas and their number is continuously increasing. Even if buried structures commonly show a better performance under seismic actions than above-ground structures, during recent strong earthquakes some urban underground structures suffered severe damages and collapses. In order to understand the behaviour of tunnels during earthquake, a wide collection of case histories has been reviewed from the available literature and some of them have been described in detail. Criteria are also shown in the paper which are used to classify the damage database. Such a classification involves entity and type of damage and is aimed to highlight the possible causes of damage, in order to improve performance-based seismic design of tunnels.

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