Abstract
This paper focuses on the investigation of seismic risk for residential buildings situated in Bucharest, the capital city of Romania. With a population of nearly 2 million inhabitants and a residential building stock of more than 130,000 units, Bucharest represents a city with one of the highest seismic risks in Europe. The seismic risk is evaluated taking into consideration only the Vrancea intermediate-depth seismic source which exhibits a dominant influence on the seismic hazard in southern and eastern Romania (including Bucharest, as well). The analyses are conducted based on a Monte Carlo earthquake catalogue which covers a time span of 50,000 years and includes more than 13,000 seismic events with magnitudes M W ≥ 6.0. In addition, in order to account for the ground-motion variability throughout Bucharest, a recently developed spatial correlation model is applied. Thus, the influence of the ground-motion correlation on the damage estimates for Bucharest is evaluated, as well. The seismic risk estimates obtained for various earthquake scenarios show a significant variability of the results obtained and offer valuable information for the decision-makers from public institutions dealing with the risk management.
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Argyroudis S, Selva J, Kakderi K, Pitialkis K (2015) Effect of spatial correlations of ground motion intensities in the seismic risk assessment of interconnected lifeline networks and transportation infrastructures. In: Proceedings of the 6th international conference on earthquake geotechnical engineering, Christchurch, New Zealand, Paper No. 341
Armas I (2012) Multi-criteria vulnerability analysis to earthquake hazard of Bucharest, Romania. Nat Hazards 63:1129–1156
Avram C (1987) The history of reinforced concrete in Romania, vol 2 (in Romanian). Ed. Tehnica, Bucharest, Romania
Bal IE, Bommer JJ, Stafford PJ, Crowley H, Pinho R (2010) The influence of geographical resolution of urban exposure data in an earthquake loss model for Istanbul. Earthq Spectra 26:619–634
Bokelmann G, Rodler FA (2014) Nature of the Vrancea seismic zone (Eastern Carpathians)—New constraints from dispersion of first-arriving P-waves. Earth Planet Sci Lett 390:59–68
EN 1998-1 (2004) Design of structures for earthquake resistance—Part 1: general rules, seismic actions and rules for buildings, European Committee for Standardization, Bruxelles, Belgium
Esposito S, Iervolino I (2012) Spatial correlation of spectral acceleration in European data. Bull Seismol Soc Am 102:2781–2788
Fajfar P (2000) A nonlinear analysis method for performance-based seismic design. Earthq Spectra 16:573–592
Federal Emergency Management Agency (2012) Multi-hazard loss estimation methodology. Earthquake model—HAZUS MH 2.1. Technical Manual, Washington, USA
Georgescu ES, Pomonis A (2012) Building damage vs. territorial casualty patterns during the Vrancea (Romania) earthquakes of 1940 and 1977. In: Proceedings of the 15th world conference on earthquake engineering, Lisbon, Portugal, Paper No. 2123
Ismail-Zadeh A, Matenco L, Radulian M, Cloetingh S, Panza G (2012) Geodynamics and intermediate depth seismicity in Vrancea (the south-eastern Carpathians): current state-of-the art. Tectonophysics 530–531:50–79
Lang D, Molina-Palacios S, Lindholm C, Balan S (2012) Deterministic earthquake damage and loss assessment for the city of Bucharest, Romania. J Seismol 16:67–88
Lungu D, Aldea A, Arion C (2000) Engineering, state and insurance efforts for reduction of seismic risk in Romania. In: Proceedings of the 12th world conference on earthquake engineering, Auckland, New Zealand, Paper No. 2236
Lungu D, Aldea A, Arion C, Cornea T, Vacareanu R (2002) Risk-UE, WP1: European distinctive features, inventory database and typology. In: Lungu D, Wenzel F, Mouroux P, Tojo I (eds) Earthquake loss estimation and risk reduction. Contributions form the second international conference on Vrancea earthquakes, Bucharest, Romania, pp 251–271
Lungu D, Vacareanu R, Aldea A, Arion C (2013) Earthquake hazard and risk in Romania. Bull Int Inst Seismol Earthq Eng 47:39–148
McGuire R (1995) Probabilistic seismic hazard analysis and design earthquakes: closing the loop. Bull Seismol Soc Am 85:1275–1284
P100-1/2013 (2013) Code for seismic design—Part I—Design prescriptions for buildings. Ministry of Regional Development and Public Administration, Bucharest, Romania
Park J, Bazzurro P, Baker JW (2007) Modeling spatial correlation of ground motion intensity measures for regional seismic hazard and portfolio loss estimations. In: Kanda J, Takada T, Furuta H (eds) Applications of statistics and probability in civil engineering. Taylor & Francis Group, London, pp 1–8
Pavel F, Vacareanu R (2017) Spatial correlation of ground motions from Vrancea (Romania) intermediate-depth earthquakes. Application for Bucharest. Bull Seismol Soc Am 107:489–494
Pavel F, Vacareanu R, Arion C, Neagu C (2013) Analysis of ground motions recorded in Bucharest during recent Vrancea earthquakes. In: Adam C, Heuer R, Lenhardt W, Schranz C (eds) Vienna congress on recent advances in earthquake engineering and structural dynamics 2013 (VEESD 2013), Paper No. 180
Pavel F, Vacareanu R, Douglas J, Radulian M, Cioflan CO, Barbat A (2016) An updated probabilistic seismic hazard assessment for Romania and comparison with the approach and outcomes of the SHARE project. Pure Appl Geophys 173:1881–1905
Radulian M, Mandrescu N, Panza GF, Popescu E, Utale A (2000) Characterization of seismogenic zones of Romania. Pure Appl Geophys 157:57–77
Sokolov V, Wenzel F (2011a) Influence of spatial correlation of strong ground motion on uncertainty in earthquake loss estimation. Earthq Eng Struct Dyn 40:993–1009
Sokolov V, Wenzel F (2011b) Influence of ground-motion correlation on probabilistic assessments of seismic hazard and loss: sensitivity analysis. Bull Earthq Eng 9:1339–1360
Toma-Danila D, Zulfikar C, Manea EF, Cioflan CO (2015) Improved seismic risk estimation for Bucharest, based on multiple hazard scenarios and analytical methods. Soil Dyn Earthq Eng 73:1–16
Vacareanu R, Radoi R, Negulescu C, Aldea A (2004) Seismic vulnerability of RC buildings in Bucharest, Romania. In: Proceedings of the 13th world conference on earthquake engineering, Vancouver, Canada, Paper No. 1796
Vacareanu R, Lungu D, Arion C (2009) Capacity curves and fragility functions for representative building types in Bucharest. In: Proceedings of the 4th national conference on earthquake engineering, vol I, pp 183–192
Vacareanu R, Radulian M, Iancovici M, Pavel F, Neagu C (2015) Fore-arc and back-arc ground motion prediction model for Vrancea intermediate depth seismic source. J Earthq Eng 19:535–562
Vidic T, Fajfar P, Fischinger M (1994) Consistent inelastic design spectra: strength and displacement. Earthq Eng Struct Dyn 23:507–521
Weatherhill GA, Silva V, Crowley H, Bazzurro P (2015) Exploring the impact of spatial correlations and uncertainties for portfolio analysis in probabilistic seismic loss estimation. Bull Earthq Eng 13:957–981
Acknowledgements
This work was supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS – UEFISCDI, Project Number PN-II-RU-TE-2014-4-0697. The first four authors gratefully acknowledge the financial support. The authors are also grateful to the National Statistics Institute (INS) for providing the information regarding the building inventory in Bucharest. The constructive feedback from two anonymous reviewers is greatly appreciated as it has helped us to considerably improve the quality of the manuscript.
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Pavel, F., Vacareanu, R., Calotescu, I. et al. Impact of spatial correlation of ground motions on seismic damage for residential buildings in Bucharest, Romania. Nat Hazards 87, 1167–1187 (2017). https://doi.org/10.1007/s11069-017-2814-6
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DOI: https://doi.org/10.1007/s11069-017-2814-6