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TECHNICAL PAPERS

Seismic Soil-Structure Interaction Responses of N-Reactor Facility

[+] Author and Article Information
J. C. Chen

New Technology Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA

O. R. Maslenikov

ABSG Consulting Inc., Oakland, CA

J. Pressure Vessel Technol 126(1), 25-33 (Feb 26, 2004) (9 pages) doi:10.1115/1.1640371 History: Received September 26, 2003; Revised October 13, 2003; Online February 26, 2004
Copyright © 2004 by ASME
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References

Chen, J. C., et al., 1985, “Seismic Response of N-Reactor Core-Independent Review of Phase II Work,” UCID-20683, Lawrence Livermore National Laboratory.
Gonzalez, L. M., 1985, “N-Reactor Safety Evaluation Criteria,” UNI-3171, UNC Nuclear Industries, Richland, WA.
Seed, H. B., et al., 1970, “Soil Moduli and Damping Factors for Dynamic Response Analyses,” Report No. EERC 70-10, University of California, Berkeley, CA.
Seed, H. B., et al., 1984, “Moduli and Damping Factors for Dynamic Analyses of Cohesionless Soils,” Report No. UCB/EERC-84/14, University of California, Berkeley, CA.
Seed, H. B., 1985, private communication, University of California, Berkeley, CA.
SHAKE: A computer Program for Earthquake Response Analysis of Horizontally Layered Sites, 1972, Report No. EERC 72-12, University of California, Berkeley, CA.
Impell Corporation, 1985, “Seismic and Pressure Tube Rupture Evaluation of DOE N-Reactor,” prepared for UNC Nuclear Industries by Impell, UNI-3153, Impell Report No. 01-2520-1370, Rev. 0.
Chen, J. C., and Tabatabais, M., 1996, “Effect of Foundation Modeling on Dynamic Response of a Soil-Structure System,” Lawrence Livermore National Laboratory, UCRL-JC-124372; Also in the Proc. of ASME/PVP and ICPVT-8th Conference, Montreal, Canada, July 21–26, 1996.
Wong, H. L., and Luco, J. E., 1980, “Soil-Structure Interaction: A Linear Continuum Mechanics Approach (CLASSI),” EC79-03, Dept. of Civil Engineering, University of Southern California, Los Angeles, CA.
Lysmer, J., et al., 1983, SASSI, System for Analysis of Soil Structure Interaction, UC Berkeley, Dept. of Civil Engineering, Berkeley, CA.

Figures

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Design acceleration time histories for seismic evaluation of N-reactor
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Design response spectra (2 percent) damping for seismic evaluation of N-reactor
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Variation of shear modulus with shear strain for cohesionless soil (after Seed and Idriss 3 and Seed et al. 4)
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Variation of shear modulus with shear strains for clays of different stiffnesses
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Strain-compatible dynamic soil properties of N-reactor site subjected to 0.25 g design motion
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Soil structure interaction model (motion in the N-S direction)
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Impell’s Foundation Model used in SASSI analysis for seismic evaluation of DOE N-reactor
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Simplified sketch of the foundation plan of the N-reactor facility
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Comparison of impedance functions for different foundation models: (a) impedance component K11, E-W translation; (b) impedance component K22; N-S translation; (c) impedance component K33, vertical translation; (d) impedance component K44, rocking about E-W axis; (e) impedance component K55, rocking about N-S axis; and (f) impedance component K66, twisting about vertical axis. (Notes: Frequencies and impedances are dimensionless. Imaginary values are divided by frequency.)
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Comparison of response spectra from analyses using impedances from different foundation models, at Node 75, the base of reactor core
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Response spectra from analyses using best estimate impedances to show the effect of varying soil modulus on the response at Node 75, the base of reactor core
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Response spectra from analyses using best estimate impedances to show the effect of varying soil modulus on the response at Node 88
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Comparison of response spectra from CLASSI best estimate analysis and SASSI analysis at Node 75

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