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Evaluation of Soil Stiffness Variability Effects on Soil-Structure Interaction Response of Nuclear Power Plant Structure

지반강성의 변동성이 원전구조물의 지반-구조물 상호작용 응답에 미치는 영향 분석

  • Received : 2014.11.04
  • Accepted : 2014.11.27
  • Published : 2015.03.01

Abstract

This study investigated the influence of probabilistic variability in stiffness and nonlinearity of soil on response of nuclear power plant (NPP) structure subjected to seismic loads considering the soil-structure interaction (SSI). Both deterministic and probabilistic methods have been employed to evaluate the dynamic responses of the structure. For the deterministic method, $SRP_{min}$ method given in USNRC SRP 3.7.2(2013) (envelope of responses using three shear modulus profiles of lower bound($G_{LB}$), best estimate($G_{BE}$) and upper bound($G_{UB}$)) and $SRP_{max}$ method (envelope of responses by more than three ground profiles within range of $G_{LB}{\leq}G{\leq}G_{UB}$) have been considered. The probabilistic method uses the Latin Hypercube Sampling (LHS) that can capture probabilistic feature of soil stiffness defined by the median and the standard deviation. These analysis results indicated that 1) number of samples shall be larger than 60 to apply the probabilistic approach in SSI analysis and 2) in-structure response spectra using equivalent linear soil profiles considering the nonlinear behavior of soil medium can be larger than those based on low-strain soil profiles.

Keywords

References

  1. Kim JM. Earthquake Resistant Design of Nuclear Structures : Chapter 4. Soil-Structure Interaction Analysis for Nuclear Structures. 28th EESK Technical Seminar; c2011.
  2. Song MS, Kim JM, Huh J, Kim MS. Soil-structure interaction analysis of containment building of nuclear power plant considering variability of soil stiffness. Proceedings of EESK Conference 2011;15(1):61-64.
  3. KINS. Analysis and Evaluation of SMART Nuclear Reactor Structures Considering Uncertainties of Soil Properties. Report No. KINS/HR-1055; c2010.
  4. Wolf JP. Dynamic Soil-Structure Interaction Analysis. Prentice-Hall; c1985.
  5. Phoon KK, Kulhawy FH. Characterization of geotechnical variability. Can Geotech J. 1999;36:612-24. https://doi.org/10.1139/t99-038
  6. Phoon KK, Kulhawy FH, Evaluation of geotechnical property variability. Can Geotech J. 1999;36:625-39. https://doi.org/10.1139/t99-039
  7. Cho SE, Park HC. A study on the Probabilistic Analysis Method considering Spatial Variability of Soil Properties. J. of Korean Geotechnical Society. 2008;24(8):111-123.
  8. Popescu R, Deodatis G, Nobahar A. Effects of random heterogeneity of soil properties on bearing capacity, Probabilistic Engn. Mech. 2005;20:324-341. https://doi.org/10.1016/j.probengmech.2005.06.003
  9. KEPIC. KEPIC ST: STB 3317, Soil-Structure Interaction Analysis. c2000.
  10. Park JH, Park J, Park K, Ok S. Analysis of soil-structure interaction considering complicated soil profile. Proceedings of the International Conference on Numerical Methods and Applications; Borovets, Bulgaria. c2007.
  11. Jin S, Lutes LD, Sarkani S. Response variability for a structure with soil-structure interaction and uncertain soil properties. Probabilistic Engn. Mech. 2000;15:175-183. https://doi.org/10.1016/S0266-8920(99)00017-X
  12. Rieck PJ, Houston TW. Statistical Soil-Structure Interaction Response of a Containment Building Considering Soil Property Variability. Transactions of the 17th Int Conf. Str. Mech. Reactor Tech. (SMiRT 17), Prague, Czech Republic. c2003.
  13. Ghiocel D, Ghanem R. Stochastic finite-element analysis of seismic soil-structure interaction. ASCE J. of Engn. Mech. 2002;128:66-77. https://doi.org/10.1061/(ASCE)0733-9399(2002)128:1(66)
  14. NUREG-0800. SRP 3.7.2 Revision 3.: Seismic System Analysis. US Nuclear Regulatory Commission. c2007.
  15. NUREG-0800. SRP 3.7.2 Revision 4.: Seismic System Analysis. US Nuclear Regulatory Commission. c2012.
  16. ASCE. Seismic Analysis of Safety-Related Nuclear Structures and Commentary. ASCE 4-98. c1999.
  17. USNRC. Regulatory Guide 1.208 : Site Response Analysis. US Nuclear Regulatory Commission. c1007.
  18. Lysmer J, Ostadan F, Tabatabaie M, Vahdani S, Tajirian F. SASSI - A System for Analysis of Soil-Structure Interaction - Theoretical Manual. Civil Engineering Department, University of California, Berkeley. c1988.
  19. IAEA. General Specification for the KARISMA Benchmark. IAEA-EBP-SS-WA-KARISMA-MR-002; Rev.01; 24.12; International Atomic Energy Agency. c2009.
  20. Stein M. Large sample properties of simulations using latin hypercube sampling. Technometrics. 1987;29(2):143-151. https://doi.org/10.1080/00401706.1987.10488205
  21. Kramer SL. Geotechnical Earthquake Engineering. N.J. Prentice Hall; c1996.