Advanced seismic slope stability analysis

The objective of this study was to present an advanced methodology for assessing seismic slope stability by taking into account the uncertainties related to the main input parameters. The methodology was applied on a real landslide in order to show the advantages of using the proposed procedure and establish the baseline trends of dynamic response and calculated permanent seismic displacements. It involves the following steps: preliminary analysis, probabilistic static and seismic factor of safety analysis, and permanent seismic displacement analysis. Estimating post-failure maximum seismic deformation of landslide mass and sounding properties is the most important part of this study. It involves both Newmark sliding block method and continuum mechanics approach, applied for characteristic set of input values in order to have more accurate assessment of slope performance and determine the relative importance of input parameters. The results of the analysis showed the benefits of using the proposed step-by-step methodology. The obtained difference in the results between the two methods depends strongly on the set input data for a particular analysis.

[1]  T. Allan Smith,et al.  Cyril and Methodius , 2012 .

[2]  G. E. Blight,et al.  The Rankine Lecture , 1997 .

[3]  Jonathan D. Bray,et al.  NONLINEAR COUPLED SEISMIC SLIDING ANALYSIS OF EARTH STRUCTURES , 2000 .

[4]  A. Drescher,et al.  Slope stability analysis by strength reduction , 1999 .

[5]  C. Juang,et al.  Geotechnical Special Publication , 2014 .

[6]  Gokhan Saygili,et al.  Probabilistic assessment of earthquake-induced sliding displacements of natural slopes , 2009 .

[7]  Fun Shao,et al.  Civil and environmental engineering , 2014 .

[8]  N. Newmark.  Effects of Earthquakes on Dams and Embankments , 1965 .

[9]  Pedro Arduino,et al.  Estimation of Uncertainty in Geotechnical Properties for Performance-Based Earthquake Engineering , 2002 .

[10]  James L. Beck,et al.  Sensitivity of Building Loss Estimates to Major Uncertain Variables , 2002 .

[11]  Timothy D. Stark,et al.  Permanent seismic deformation analysis of a landslide , 2005 .

[12]  M. Fardis,et al.  Designer's guide to EN 1998-1 and en 1998-5 Eurocode 8: Design of structures for earthquake resistance; general rules, seismic actions, design rules for buildings, foundations and retaining structures/ M.Fardis[et al.] , 2005 .

[13]  Jonathan D. Bray,et al.  Earthquake-Induced Displacements of Solid-Waste Landfills , 1998 .

[14]  B. Hardin,et al.  VIBRATION MODULUS OF NORMALLY CONSOLIDATED CLAY , 1968 .

[15]  William Murphy,et al.  OBTAINING PROBABILISTIC ESTIMATES OF DISPLACEMENT ON A LANDSLIDE DURING FUTURE EARTHQUAKES , 2004 .