Seismic risk evaluation of highway tunnel groups

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dc.contributor.authorCartes, Pablo
dc.contributor.authorChamorro, Alondra
dc.contributor.authorEchaveguren, Tomas
dc.date.accessioned2025-01-20T22:23:23Z
dc.date.available2025-01-20T22:23:23Z
dc.date.issued2021
dc.description.abstractTunnels allow the continuity of rural road and urban transportation networks. Their shutdown provokes a loss in the transport system's level service, which entails higher road user costs. Earthquakes are the hazard that most affect the tunnels' serviceability. Depending on the structural damage's magnitude, the serviceability loss can be at different degrees, from marginal changes in traffic flow, associated with minor damages, to traffic interruption, associated with collapsing. Because of seismic phenomena' randomness nature, its effect on tunnel serviceability is estimated in probabilistic terms. Traffic interruption probability was estimated using fragility curves, representing the probability of achieving a specific damage state regarding the seismic hazard intensity. The calibration of tunnel fragility curves requires large samples of damages, seismic intensities, and geological and constructive data, which are not always available, especially in countries with a small number of tunnels in their road network. This work proposes a simplified procedure for evaluating the tunnels' traffic interruption probability due to earthquakes. The approach proposed uses existent seismic exposures maps, a strategy for selecting from existing fragility curves the more suitable, and a simple method to estimate the traffic interruption probability. The procedure analysed 20 tunnels affected by the Maule earthquake in Chile. These tunnels experimented PGA between 0.12 and 0.36 g. The highest risk values were obtained in tunnels without alternative routes and high repairing costs.
dc.description.funderNational Research and Development Agency (ANID) of Chile
dc.fuente.origenWOS
dc.identifier.doi10.1007/s11069-021-04770-1
dc.identifier.eissn1573-0840
dc.identifier.issn0921-030X
dc.identifier.urihttps://doi.org/10.1007/s11069-021-04770-1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94702
dc.identifier.wosidWOS:000650077100001
dc.issue.numero2
dc.language.isoen
dc.pagina.final2121
dc.pagina.inicio2101
dc.revistaNatural hazards
dc.rightsacceso restringido
dc.subjectHighway tunnels
dc.subjectSeismic hazard
dc.subjectRisk
dc.subjectTraffic interruption probability
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleSeismic risk evaluation of highway tunnel groups
dc.typeartículo
dc.volumen108
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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