Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Comparison of Seismic Responses of Seismically Isolated NPP Containment Structures using Equivalent Linear- and Nonlinear-Lead-Rubber Bearing Modeling

등가선형 및 비선형 납-고무받침 모델을 이용한 면진된 원전구조물의 지진응답의 비교

  • Lee, Jin Hi (Department of Civil Engineering, Kangwon National University) ;
  • Song, Jong-Keol (Department of Civil Engineering, Kangwon National University)
  • Received : 2014.04.28
  • Accepted : 2014.07.14
  • Published : 2015.01.01
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Abstract

In order to perform a soil-isolation-structure interaction analysis of seismically isolated nuclear power plant (NPP) structures, the nonlinear behavior of a seismic isolation system may be converted to an equivalent linear model used in frequency domain analysis. Seismic responses for seismically isolated NPP containment structures subjected to a simple artificial acceleration history and different site class earthquakes are evaluated for the equivalent-linear and nonlinear models that have been applied to lead-rubber bearing (LRB) modeling. It can be observed that the maximum displacements of the equivalent linear model are larger than that of the nonlinear model. From the floor response spectrum analysis for the top of NPP containment structures, it can be observed that the spectral acceleration of an equivalent linear model at about 0.5 Hz frequency is about 2~3 times larger than that of a nonlinear model.

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References

  1. Mazzoni S, McKenna F, Scott MH, Fenves GL. OpenSees: Open System of Earthquake Engineering Simulation, Pacific Earthquake Engineering Center, Univ. of Calif., Berkeley. (http://opensees.berkeley.edu), 2007.
  2. Lysmer J, Ostadan F, Chin CC. A system for analysis of soil-structure interaction, SASSI 2000 theoretical manual. UC Berkeley; c1999.
  3. FEMA P750. NEHRP Recommended Seismic Provisions for New Buildings and Other Structures. Washington D.C.: Federal Emergency Management Agency of the U.S. Department of Homeland Security; c2009.
  4. PEER Strong Motion Database[Internet]. Berkeley, California Avle from: http://peer.berkeley.edu/smcat/sites.html.
  5. U.S. Nuclear Regulatory Commission. Technical Considerations for Seismic Isolation of Nuclear Facilities(Draft). c2012.
  6. Lee JH, Song JK, Kim GJ, Kim NY. Nonlinear Analysis of Seismically Isolated NPP Containment Structure considering Various Seismic Characteristics. Conference on Earthquake Engineering Society of Korea, EESK. c2014.
  7. Lee JH, Song JK. Applicability Evaluation of Equivalent Linear Model for Isolated NPP Containment Structure. Conference on Korea Society of Civil Engineering, KSCE. c2013.
  8. Kim HU. Evaluation of the Applicability of Existing Design Formula for Seismic Isolation to Nuclear Power Plants. Journal of Engineering Society of Korea. 2012;16(6):29-36. https://doi.org/10.5000/EESK.2012.16.6.029
  9. Kim HU, Joo KH, NOH SH, Jung CG. Behavior Analysis od a Seismically Isolated NPP Structure by Varying Seismic Input Generation Method and Strong Ground Motion Duration. Journal of Engineering Society of Korea. 2013;17(4):187-195. https://doi.org/10.5000/EESK.2013.17.4.187
  10. LEE JH, Kim JK, Hong KJ. Characteristics of Earthquake Responses of an Isolated Containment Building in Nuclear Power Plants According to Natural Frequency of Soil. Journal of Engineering Society of Korea. 2013;17(6):245-255. https://doi.org/10.5000/EESK.2013.17.6.245
  11. Choi DH, LEE SH. Generation of Floor Response Spectra including Equipment-Structure Interaction in Frequency Domain. Journal of Engineering Society of Korea. 2005;9(6):13-19. https://doi.org/10.5000/EESK.2005.9.6.013
  12. Providakis CP. Effect of LRB isolators and supplemental viscous dampers on seismic isolated buildings under near-fault excitations. Engineering Structures. 2008;30:1187-1198. https://doi.org/10.1016/j.engstruct.2007.07.020
  13. Ricardo AM, Ragunath S, Kevin MK. Floor response spectra for light components mounted on regular moment-resisting frame structures. Engineering Structures. 2006;28:1927-1940. https://doi.org/10.1016/j.engstruct.2006.03.022
  14. Ryan KL, Kelly JM, Chopra AK. Nonlinear Model for Lead-Rubber Bearings Including Axial-Load Effects. journal of Engineering Mechanics. 2005;131(12):1270-1278. https://doi.org/10.1061/(ASCE)0733-9399(2005)131:12(1270)
  15. Kelly JM. Tension Buckling in Multilayer Elastomeric Bearings. journal of Engineering Mechanics. 2003;129(12):1363-1368. https://doi.org/10.1061/(ASCE)0733-9399(2003)129:12(1363)
  16. Dicleli M, Buddaram S. Equivalent linear analysis of seismic-isolated bridges subjected to near-fault ground motions with forward rupture directivity effect. Engineering Structures. 2007;29:21-32. https://doi.org/10.1016/j.engstruct.2006.04.004