The soil-structure interaction (SSI) has a significant impact on nuclear power plant (NPP) structures, especially for massive and rigid structures founded on soils, such as containments. The U.S. Nuclear Regulatory Commission’s (NRC) Standard Review Plan (SRP) provides the requirement and acceptance criteria for incorporating the SSI effect in the seismic design and analyses of NPP structures. The NRC staff uses the SRP for safety review of license applications. Recent studies have indicated that ground motions in recorded real earthquake events have exhibited spatial incoherency in high-frequency contents. Several techniques have been developed to incorporate the incoherency effect in the seismic response analyses. Section 3.7.2 of Revision 3 of the SRP also provided guidance for use in the safety evaluation of seismic analyses considering ground motion spatial incoherency effect. This paper describes a case study of the SSI and incoherency effects on seismic response analyses of NPP structures. The study selected a typical containment structure. The SSI model is generated based on the typical industry practice for SSI computation of containment structures. Specifically, a commercial version of SASSI was used for the study, which considered a surface-founded structure. The SSI model includes the foundation, represented with brick elements, and the superstructure, represented using lumped mass and beams. The study considered various soil conditions and ground motion coherency functions to investigate the effect of the range of soil stiffness and the ground motion incoherency effect on SSI in determining the seismic response of the structures. This paper describes the SSI model development and presents the analysis results as well as insights into the manner in which the SSI and incoherency effects are related to different soil conditions.
Skip Nav Destination
ASME 2009 Pressure Vessels and Piping Conference
July 26–30, 2009
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4371-0
PROCEEDINGS PAPER
Case Study: Effect of Soil-Structure Interaction and Ground Motion Incoherency on Nuclear Power Plant Structures Available to Purchase
Jim Xu,
Jim Xu
U. S. Nuclear Regulatory Commission, Washington, DC
Search for other works by this author on:
Sujit Samaddar
Sujit Samaddar
U. S. Nuclear Regulatory Commission, Washington, DC
Search for other works by this author on:
Jim Xu
U. S. Nuclear Regulatory Commission, Washington, DC
Sujit Samaddar
U. S. Nuclear Regulatory Commission, Washington, DC
Paper No:
PVP2009-77323, pp. 369-377; 9 pages
Published Online:
July 9, 2010
Citation
Xu, J, & Samaddar, S. "Case Study: Effect of Soil-Structure Interaction and Ground Motion Incoherency on Nuclear Power Plant Structures." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 8: Seismic Engineering. Prague, Czech Republic. July 26–30, 2009. pp. 369-377. ASME. https://doi.org/10.1115/PVP2009-77323
Download citation file:
18
Views
Related Proceedings Papers
Related Articles
Guest Editorial
J. Pressure Vessel Technol (November,2006)
Insights Gleaned From NRC-BNL Benchmark Evaluation of Seismic Analysis Methods for Non-Classically Damped Coupled Systems
J. Pressure Vessel Technol (February,2004)
Validation Facility and Model Development for Nuclear Fuel Assembly Response to Seismic Loading
ASME J of Nuclear Rad Sci (October,2015)
Related Chapters
Development of Nuclear Boiler and Pressure Vessels in Taiwan
Companion Guide to the ASME Boiler and Pressure Vessel Code, Volume 3, Third Edition
Use of PSA in Lisencing of EPR 1600 in Finland (PSAM-0160)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)
Functionality and Operability Criteria
Companion Guide to the ASME Boiler and Pressure Vessel Code, Volume 2, Third Edition