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dc.contributor.authorMavrouli, Olga Christina
dc.contributor.authorCorominas Dulcet, Jordi
dc.contributor.authorWartman, J
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.identifier.citationMavrouli, O.; Corominas, J.; Wartman, J. Methodology to evaluate rock slope stability under seismic conditions at Solà de Santa Coloma, Andorra. "Natural hazards and Earth system sciences", 2009, vol. 9, núm. 6, p. 1763-1773.
dc.description.abstractAn analytical methodology is presented to evaluate rock slope stability under seismic conditions by considering the geomechanical and topographic properties of a slope. The objective is to locate potential rockfall source areas and evaluate their susceptibility in terms of probability of failure. For this purpose, the slope face of a study area is discretized into cells having homogenous aspect, slope angle, rock properties and joint set orientations. A pseudostatic limit equilibrium analysis is performed for each cell, whereby the destabilizing effect of an earthquake is represented by a horizontal force. The value of this force is calculated by linear interpolation between the peak horizontal ground acceleration PGA at the base and the top of the slope. The ground acceleration at the top of the slope is increased by 50% to account for topographic amplification. The uncertainty associated with the joint dip is taken into account using the Monte Carlo method. The proposed methodology was applied to a study site with moderate seismicity in Sol`a de Santa Coloma, located in the Principality of Andorra. The results of the analysis are consistent with the spatial distribution of historical rockfalls that have occurred since 1997. Moreover, the results indicate that for the studied area, 1) the most important factor controlling the rockfall susceptibility of the slope is water pressure in joints and 2) earthquake shaking with PGA of 0.16 g will cause a significant increase in rockfall activity only if water levels in joints are greater than 50% of the joint height.
dc.format.extent11 p.
dc.rightsAttribution 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Sismologia
dc.subject.lcshRock slopes
dc.titleMethodology to evaluate rock slope stability under seismic conditions at Solà de Santa Coloma, Andorra
dc.subject.lemacMecànica de roques -- Estabilitat
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorMavrouli, O.; Corominas, J.; Wartman, J.
local.citation.publicationNameNatural hazards and Earth system sciences

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Attribution 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 3.0 Spain