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Assessment of Analysis Methods for Seismic Shear Wall Capacity Using JNES/NUPEC Multi-Axial Cyclic and Shaking Table Test Data (NUREG/CR-6925)On this page: Download complete documentThe following links on this page are to documents in Adobe Portable Document Format (PDF). See our Plugins, Viewers, and Other Tools page for more information. For successful viewing of PDF documents on our site please be sure to use the latest version of Adobe. Publication InformationManuscript Completed: December 2006 Prepared by Brookhaven National Laboratory S. Ali, NRC Project Manager Prepared for AbstractAs part of a program (JCN N-6076) sponsored by the U. S. Nuclear Regulatory Commission (NRC), a study is performed by Brookhaven National Laboratory (BNL) to assess the performance of analysis methods for computing the seismic response of shear wall structures subjected to strong ground motions and their ultimate seismic failure capacities. The BNL study is accomplished using the multi-axial cyclic and shaking table test data provided by the Japan Nuclear Energy Safety Organization (JNES) and Nuclear Power Engineering Corporation (NUPEC) as part of collaborative efforts between NRC and JNES/NUPEC to study seismic issues important to the safe operation of commercial nuclear power plant (NPP) structures, systems and components (SSC). It is the subject of this report to present and discuss the results and insights of the BNL study. The BNL study described in this report includes: 1) an assessment of simplified methods for seismic shear wall failure capacity estimates against the JNES/NUPEC cyclic and shaking table test data, 2) an ANACAP finite element (FE) prediction of JNES single and multi-axial cyclic test data, 3) an ANACAP FE 3-D simulation of the JNES/NUPEC shaking table test, and 4) an assessment of the effect of prior damage history on the FE analyses of the seismic response of shear wall structures. This study concluded that both the simplified and FE methods investigated in this report are capable of predicting the ultimate seismic capacity of the JNES/NUPEC shear wall specimens with reasonable accuracy from a practical standpoint. The progressive degrading characteristics of the shear wall specimens were also captured by the BNL analyses, especially the ANACAP FE 3-D dynamic simulation analysis. The NRC staff concludes that the JNES/NUPEC cyclic and shaking table test data discussed in this report can be used as a benchmark for future validations or confirmations of the adequacy of other alternative analytical methods or computer programs for the seismic response analysis of NPP shear wall structures, which were not included in this report for the BNL study. |
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