Abstract
The present paper aims at the proposition and quantification of a semi-empirical methodology to estimate physical vulnerability of roads subjected to earthquake induced landslide hazards. It is based on a modification of the existing engineering judgmental HAZUS fragility curves using an empirical model that relates the seismic permanent ground displacement (PGD) with the peak ground acceleration (PGA) for the Newmark rigid sliding block case. In this regard, it is possible to account for the specific characteristics of soil and local topography within the estimation of road vulnerability. Various sets of fragility curves can be constructed as a function of peak ground acceleration (PGA), considering the characteristics of the slope (i.e. yield coefficient, ky) and the earthquake magnitude. A preliminary application of the proposed methodology is performed with the aid of GIS tool to the roadway system of city of Grevena in NW Greece for three different earthquake scenarios. It is observed that the level of damage predicted using the aforementioned methodology is less severe compared to the corresponding level of damage anticipated using the HAZUS methodology.
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Acknowledgments
The work described in this paper was supported by the project SafeLand “Living with landslide risk in Europe: Assessment, effects of global change, and risk management strategies” under Grant Agreement No. 226479 in the 7th Framework Program of the European Commission. This support is gratefully acknowledged.
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Argyroudis, S., Fotopoulou, S., Pitilakis, K. (2013). Semi-Empirical Assessment of Road Vulnerability to Seismically Induced Slides. In: Margottini, C., Canuti, P., Sassa, K. (eds) Landslide Science and Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31427-8_41
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DOI: https://doi.org/10.1007/978-3-642-31427-8_41
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