Exploring Risk-Targeted Hazard Maps for Europe

In Europe, the design of new structures according to modern regulations requires a uniform hazard spectrum for a given return period (e.g., 475 years). The assumption is that the resulting collapse probability is equally uniform for all structures, regardless of their structural properties or location. However, the uncertainty in the collapse capacity and hazard curves at different sites lead to an unequal level of risk. This discrepancy is undesirable given that some inhabitants will live in dwellings with a lower seismic safety than others living in structures designed according to the same regulation. The estimation of risk-targeted hazard maps allows for the definition of a design ground motion leading to a uniform level of risk. Using hundreds of fragility models developed for European buildings and hazard results from the SHARE project, we calculate risk-targeted hazard maps for a pre-established annual collapse probability.

[1]  Thomas Ulrich,et al.  Fragility curves for risk-targeted seismic design maps , 2014, Bulletin of Earthquake Engineering.

[2]  J. Bommer,et al.  Adapting earthquake actions in Eurocode 8 for performance‐based seismic design , 2006 .

[3]  Bruce R. Ellingwood,et al.  Risk-Targeted versus Current Seismic Design Maps for the Conterminous United States , 2007 .

[4]  Dimitrios G. Lignos,et al.  An efficient method for estimating the collapse risk of structures in seismic regions , 2013 .

[5]  Domenico Giardini,et al.  The Global Seismic Hazard Assessment Program (GSHAP) - 1992/1999 , 1999 .

[6]  R. Spence,et al.  Earthquake Protection: Coburn/Earthquake Protection, Second Edition , 2006 .

[7]  Helen Crowley,et al.  Epistemic Uncertainty in Fragility Functions for European RC Buildings , 2014 .

[8]  J. Vrijling,et al.  An overview of quantitative risk measures for loss of life and economic damage. , 2003, Journal of hazardous materials.

[9]  Ahmed Ghobarah,et al.  Performance-based design in earthquake engineering: state of development , 2001 .

[10]  Rui Pinho,et al.  Investigation of the characteristics of Portuguese regular moment-frame RC buildings and development of a vulnerability model , 2015, Bulletin of Earthquake Engineering.

[11]  V. Silva,et al.  Extending displacement-based earthquake loss assessment (DBELA) for the computation of fragility curves , 2013 .

[12]  W Duckett,et al.  Risk analysis and the acceptable probability of failure , 2005 .

[13]  Peter Fajfar,et al.  A practice‐oriented estimation of the failure probability of building structures , 2012 .

[14]  Jack W. Baker,et al.  Selecting and Scaling Earthquake Ground Motions for Performing Response-History Analyses | NIST , 2011 .

[15]  R. Sharpe.  Tentative Provisions for the Development of Seismic Regulations for Buildings , 1994 .

[16]  N. Null.  Seismic Design Criteria for Structures, Systems, and Components in Nuclear Facilities , 2005 .

[17]  Helen Crowley,et al.  Fragility Function Manager Tool , 2014 .

[18]  Nijs Jan Duijm.  Acceptance criteria in Denmark and the EU , 2009 .

[19]  Curt B. Haselton,et al.  Expected earthquake damage and repair costs in reinforced concrete frame buildings , 2012 .

[20]  Jonathan P. Stewart,et al.  Evaluation of the seismic performance of a code‐conforming reinforced‐concrete frame building—from seismic hazard to collapse safety and economic losses , 2007 .

[21]  Rui Pinho,et al.  Evaluation of analytical methodologies used to derive vulnerability functions , 2014 .

[22]  Curt B. Haselton,et al.  Seismic Collapse Safety of Reinforced Concrete Buildings. I: Assessment of Ductile Moment Frames , 2011 .

[23]  T. Rossettoa,et al.  Derivation of vulnerability functions for European-type RC structures based on observational data , 2003 .

[24]  Domenico Giardini,et al.  Unified seismic hazard modelling throughout the Mediterranean region , 2000 .

[25]  Matjaž Dolšek,et al.  Incorporating intensity bounds for assessing the seismic safety of structures: Does it matter? , 2014 .

[26]  Thomas Ulrich,et al.  Risk-targeted seismic design maps for mainland France , 2013, Natural Hazards.

[27]  F. Nadim,et al.  On the Acceptable Risk for Structures Subjected to Geohazards , 2006 .

[28]  K. Pitilakis,et al.  Earthquake Disaster Scenario Prediction and Loss Modelling for Urban Areas , 2007 .

[29]  Hid N. Grouni,et al.  Methods of structural safety , 1986 .