Advertisement

Investigation on site-specific seismic response analysis for Bucharest (Romania)

  • Florin PavelEmail author
  • Radu Vacareanu
  • Kyriazis Pitilakis
  • Anastasios Anastasiadis
Original Research
  • 34 Downloads

Abstract

In this study, the nonlinear seismic response analysis of five sites with deep boreholes in Bucharest (Romania) is performed. A ground motion database consisting of recordings obtained during several Vrancea intermediate-depth earthquakes is compiled for the analyses. The results of the nonlinear site response analysis show that significant long-period spectral amplifications occur for all five sites and that the level on input peak ground acceleration influences in a significant manner the spectral amplifications, both as median value and variability. In addition, the differences in terms of site amplification factors between the five analysed sites also increase with the level of the input peak ground acceleration levels. The median site amplifications decrease with the increase of the peak ground acceleration for spectral periods of up to 2.0 s, while for longer periods the median site amplifications increase. The results of the nonlinear site response analysis were also validated by using real ground motions recorded in the same area during recent Vrancea intermediate-depth earthquakes.

Keywords

Vrancea intermediate-depth seismic source Site amplification factors Ground motion recordings Shear wave velocity Peak ground acceleration Seismic hazard 

Notes

Acknowledgements

The constructive feedback from two anonymous Reviewers is greatly appreciated as it has helped us to considerably improve the quality of the original manuscript.

References

  1. Abrahamson NA, Gregor N, Addo K (2016) BC Hydro ground motion prediction equations for subduction earthquakes. Eq Spectra 32(1):23–44Google Scholar
  2. Aldea A, Okawa I, Koyama S, Poiata N (2006) Dense urban seismic instrumentation for site-effects assessment in Bucharest, Romania. In: Proceedings of the 1st first European conference on earthquake engineering and seismology (ECEES), Geneva, Switzerland, Paper No. 518Google Scholar
  3. Aldea A, Poiata N, Kashima T, Albota E, Demetriu S (2007) NCSRR digital seismic network in Romania. In: Proceedings of ISSRR2007 international symposium on seismic risk reduction. The JICA Technical Cooperation Project in Romania, pp 143–156Google Scholar
  4. Bala A, Raileanu V, Zihan I, Ciugudean V, Grecu B (2006) Physical and dynamic properties of the shallow sedimentary rocks in the Bucharest metropolitan area. Rom Rep Phys 58(2):221–250Google Scholar
  5. Bala A, Grecu B, Ciugudean V, Raileanu V (2009) Dynamic properties of the Quaternary sedimentary rocks and their influence on seismic site effects. Case study in Bucharest City, Romania. Soil Dyn Earthq Eng 29:144–154CrossRefGoogle Scholar
  6. Bala A, Hannich D, Ritter JRR, Ciugudean-Toma V (2011) Geological and geophysical model of the quaternary layers based on in situ measurements in Bucharest, Romania. Rom Rep Phys 63(1):250–274Google Scholar
  7. Bazzurro P, Cornell CA (2004) Ground motion amplification in nonlinear soil sites with uncertain properties. Bull Seism Soc Am 94(6):2090–2109CrossRefGoogle Scholar
  8. Calarasu E (2012) Microzonation of local soil conditions for Bucharest and its metropolitan area with applications for the evaluation of seismic risk, PhD thesis (in Romanian). Technical University of Civil Engineering Bucharest, RomaniaGoogle Scholar
  9. CEN (2004) Eurocode 8: design of structures for earthquake resistance—Part 1: general rules, seismic actions and rules for buildings, European Standard EN 1998-1:2004Google Scholar
  10. Constantinescu L, Enescu E (1985) Vrancea earthquakes from scientific and technologic point of view. Editura Academiei (in Romanian)Google Scholar
  11. Faccioli E (1976) A stochastic approach to soil amplification. Bull Seism Soc Am 66(4):1277–1291Google Scholar
  12. Faccioli E, Vanini M, Paolucci R (2018) Record-based validations of site-specific probabilistic seismic hazard assessment. Soil Dyn Earthq Eng.  https://doi.org/10.1016/j.soildyn.2018.02.038 CrossRefGoogle Scholar
  13. Hashash YMA, Musgrove MI, Harmon JA, Groholski DR, Phillips CA, Park D (2016) DEEPSOIL 6.1, User manual. Board of Trustees of University of Illinois at Urbana-Champaign, Urbana, ILGoogle Scholar
  14. Liteanu E (1961) On the quaternary/tertiary limit in Romanian plain. Economic and Technical studies E(5):12 (in Romanian) Google Scholar
  15. Manea EF, Michel C, Poggi V, Fäh D, Radulian M, Balan FS (2016) Improving the shear wave velocity structure beneath Bucharest (Romania) using ambient vibrations. Geophys J Int 207(2):848–861CrossRefGoogle Scholar
  16. Ordaz M, Meli R (2004) Seismic design and codes in Mexico. In: Proceedings of the 13th world conference on earthquake engineering, Vancouver, Canada, Paper No. 4000Google Scholar
  17. P100-1 (2013) Code for seismic design—part I—design prescriptions for buildings. Ministry of Regional Development and Public Administration, Bucharest, RomaniaGoogle Scholar
  18. Pavel F, Popa V, Vacareanu R (2018) Impact of long-period ground motions on structural design: a case study for Bucharest. Springer, RomaniaCrossRefGoogle Scholar
  19. Pavel F, Vacareanu R, Pitilakis K (2019) Intensity-dependent site amplification factors for Vrancea intermediate-depth earthquakes. Bull Earthq Eng.  https://doi.org/10.1007/s10518-019-00563-x CrossRefGoogle Scholar
  20. Pitilakis K, Riga E, Anastasiadis A (2013) New code site classification, amplification factors and normalized response spectra based on a worldwide ground-motion database. Bull Earthq Eng 11(4):925–966CrossRefGoogle Scholar
  21. Pitilakis K, Riga E, Anastasiadis A, Fotopoulou S, Karafagka S (2018) Towards the revision of EC8: proposal for an alternative site classification scheme and associated intensity dependent spectral amplification factors. Soil Dyn Earthq Eng.  https://doi.org/10.1016/j.soildyn.2018.03.030 CrossRefGoogle Scholar
  22. Roblee CJ, Silva WJ, Toro GR, Abrahamson N (1996) Variability in site-specific seismic ground-motion design predictions. In: Shackelford CD, Nelson PP, Roth MJS (eds) Uncertainty in the geologic environment: from theory to practice. 58, vol 2, pp 1113–1133. ASCE Geotech Special PublicationGoogle Scholar
  23. ROMPLUS Catalogue. https://web.infp.ro/#/romplus. Accessed on March 1, 2019
  24. Seed HB, Idriss IM (1969) Soil moduli and damping factors for dynamic response analyses. Report No. EERC 70-10, Earthquake Research Center, University of California, Berkeley, CaliforniaGoogle Scholar
  25. Seed HB, Wong RT, Idriss IM, Tokimatsu K (1986) Moduli and damping factors for dynamic analyses of cohesionless soils. J Geotech Eng ASCE 112(11):1016–1032CrossRefGoogle Scholar
  26. Sokolov VY, Bonjer K-P, Wenzel F (2004) Accounting for site effect in probabilistic assessment of seismic hazard for Romania and Bucharest: a case of deep seismicity in Vrancea. Soil Dyn Earthq Eng 24:929–947CrossRefGoogle Scholar
  27. Toro G (1995) Probabilistic models of site velocity profiles for generic and site-specific ground-motion amplification studies. Technical Report No. 779574, Brookhaven National Laboratory, Upton, p 147Google Scholar
  28. Vucetic M, Dobry R (1991) Effect of soils plasticity on cyclic response. J Geotech Eng ASCE 117(1):898–907CrossRefGoogle Scholar
  29. Wald DJ, Allen TI (2007) Topographic slope as a proxy for seismic site conditions and amplification. Bull Seismol Soc Am 97:1379–1395CrossRefGoogle Scholar
  30. Wirth W, Wenzel F, Sokolov VY, Bonjer KP (2003) A uniform approach to seismic site effect analysis in Bucharest, Romania. Soil Dyn Earthq Eng 23:737–758CrossRefGoogle Scholar
  31. Yamanaka H, Aldea A, Fukumoto S, Poiata N, Albota E (2007) Results from single-station and array microtremor measurements in Bucharest, Romania. In: Proceedings of the 4th international conference on earthquake geotechnical engineering, Thessaloniki, Greece, Paper No. 1522Google Scholar

Copyright information

© Springer Nature B.V. 2020

Authors and Affiliations

  • Florin Pavel
    • 1
    Email author
  • Radu Vacareanu
    • 1
  • Kyriazis Pitilakis
    • 2
  • Anastasios Anastasiadis
    • 2
  1. 1.Seismic Risk Assessment Research CentreTechnical University of Civil Engineering BucharestBucharestRomania
  2. 2.Laboratory of Soil Mechanics, Foundations and Geotechnical Earthquake EngineeringAristotle University of ThessalonikiThessalonikiGreece

Personalised recommendations