Soil amplification in probabilistic ground motion hazard analysis

The article presents a comparison of different probabilistic methods for ground motion hazard assessments that include site effects. The approaches examined here were selected and refined during the different phases of the S2-Project, which this journal volume is addressed to. Different procedures characterized by different levels of sophistication, from the simpler one based on the use of standard ground motion predictive equations for specific ground types to the more complex one based on the convolution of a site-specific amplification function (and its variability) with the hazard curve for reference rock, are compared and contrasted with the aim of pointing out strengths and weaknesses of each of them. In addition, a fully non-ergodic approach that separates the epistemic contribution (i.e., the epistemic uncertainty affecting the soil properties) from the total variability in site amplification is presented. To fulfill the scope of the work, the study focuses on three test sites in Italy characterized by different geological conditions and seismicity levels: Mirandola and Soncino in the Po Plain (northern Italy) and Peglio in central Italy.

[1]  J. Bommer,et al.  PREDICTION OF HORIZONTAL RESPONSE SPECTRA IN EUROPE , 1996 .

[2]  L. H. Roehm,et al.  Earthquake ground motions for design and analysis of dams , 1988 .

[3]  D. Rinaldis,et al.  Seismic hazard maps of Italy including site effects , 2000 .

[4]  Roger D. Borcherdt,et al.  Estimates of Site-Dependent Response Spectra for Design (Methodology and Justification) , 1994 .

[5]  D. Bindi,et al.  Ground motion prediction equations derived from the Italian strong motion database , 2011 .

[6]  Rodolfo Puglia,et al.  Overview on the Strong‐Motion Data Recorded during the May–June 2012 Emilia Seismic Sequence , 2013 .

[7]  P. Bazzurro,et al.  Disaggregation of Probabilistic Ground-Motion Hazard in Italy , 2009 .

[8]  S. Barani,et al.  Assessing the Effectiveness of Soil Parameters for Ground Response Characterization and Soil Classification , 2008 .

[9]  F. Mazzolani,et al.  Design of Steel Structures for Buildings in Seismic Areas: Eurocode 8: Design of structures for earthquake resistance. Part 1-1 - General rules, seismic actions and rules for buildings , 2017 .

[10]  H. Bolton Seed,et al.  Closure of "Simplified Procedure for Estimating Dam and Embankment Earthquake-Induced Deformations" , 1977 .

[11]  Chris H. Cramer,et al.  Site-Specific Seismic-Hazard Analysis that is Completely Probabilistic , 2003 .

[12]  Mark D. Petersen,et al.  A Time-Dependent Probabilistic Seismic-Hazard Model for California , 2000 .

[13]  C. Cramer,et al.  Seismic ground-motion hazard mapping incorporating site effects for Los Angeles, Orange, and Ventura counties, California: A geographical information system application , 1997, Bulletin of the Seismological Society of America.

[14]  C. Allin Cornell,et al.  Ground-Motion Amplification in Nonlinear Soil Sites with Uncertain Properties , 2004 .

[15]  S. Barani,et al.  Effects of surface topography on ground shaking prediction: implications for seismic hazard analysis and recommendations for seismic design , 2014 .

[16]  Paolo Bazzurro,et al.  A Probabilistic Method for the Prediction of Earthquake-Induced Slope Displacements , 2010 .

[17]  Lawrence L. Kupper,et al.  Probability, statistics, and decision for civil engineers , 1970 .

[18]  B. Bradley.  Strong ground motion characteristics observed in the 4 September 2010 Darfield, New Zealand earthquake , 2012 .

[19]  D. Bindi,et al.  The 6 April 2009 Mw 6.3 L'Aquila (Central Italy) Earthquake: Strong-motion Observations , 2009 .

[20]  S. Barani,et al.  Influence of Soil Modeling Uncertainties on Site Response , 2013 .

[21]  Mehmet Celebi,et al.  Engineering Aspects of the September 19, 1985 Mexico Earthquake , 1987 .

[22]  Julian J. Bommer,et al.  The Variability of Ground-Motion Prediction Models and Its Components , 2010 .

[23]  C. Cornell,et al.  Disaggregation of seismic hazard , 1999 .

[24]  Robin K. McGuire,et al.  New seismic design spectra for nuclear power plants , 2001 .

[25]  Edward H. Field,et al.  Accounting for Site Effects in Probabilistic Seismic Hazard Analyses of Southern California: Overview of the SCEC Phase III Report , 2000 .

[26]  Linda Al Atik,et al.  Kappa ( ) Scaling of Ground-Motion Prediction Equations Using an Inverse Random Vibration Theory Approach , 2014 .

[27]  C. Allin Cornell,et al.  Nonlinear Soil-Site Effects in Probabilistic Seismic-Hazard Analysis , 2004 .

[28]  J. Bommer,et al.  Application of Single-Station Sigma and Site-Response Characterization in a Probabilistic Seismic-Hazard Analysis for a New Nuclear Site , 2014 .

[29]  F. Pergalani,et al.  Evaluation of site effects in some localities of ‘Alta Val Tiberina Umbra’ (Italy) by numerical analysis , 2003 .

[30]  H. Crowley,et al.  Seismic Hazard Assessment (2003–2009) for the Italian Building Code , 2011 .

[31]  Julian J. Bommer,et al.  Criteria for Selecting and Adjusting Ground-Motion Models for Specific Target Regions: Application to Central Europe and Rock Sites , 2006 .

[32]  Julian J. Bommer,et al.  Derivation of design soil coefficients (S) and response spectral shapes for Eurocode 8 using the European Strong-Motion Database , 2002 .

[33]  F. Pergalani,et al.  Seismic microzoning of the area struck by Umbria–Marche (Central Italy) Ms 5.9 earthquake of 26 September 1997 , 1999 .

[34]  D. Bindi,et al.  Single‐Station Sigma for Italian Strong‐Motion Stations , 2014 .

[35]  Jonathan D. Bray,et al.  Simplified Seismic Slope Displacement Procedures , 2007 .

[36]  Ezio Faccioli,et al.  Evaluation of Probabilistic Site‐Specific Seismic‐Hazard Methods and Associated Uncertainties, with Applications in the Po Plain, Northern Italy , 2015 .

[37]  Adrian Rodriguez-Marek,et al.  Analysis of Single-Station Standard Deviation Using the KiK-net Data , 2011 .

[38]  Paolo Bazzurro,et al.  The multiple facets of probabilistic seismic hazard analysis:a review of probabilistic approaches to the assessment of the different hazards caused by earthquakes , 2014 .

[39]  S. Barani,et al.  Overview of topographic effects based on experimental observations: meaning, causes and possible interpretations , 2014 .

[40]  James N. Brune,et al.  Probabilistic Seismic Hazard Analysis without the Ergodic Assumption , 1999 .

[41]  Dario Albarello,et al.  Empirical scoring of ground motion prediction equations for probabilistic seismic hazard analysis in Italy including site effects , 2017, Bulletin of Earthquake Engineering.