DEVELOPMENT OF A NONLINEAR TIME DOMAIN METHODOLOGY, RESULTS (PART II)

Conference · Sat Aug 01 00:00:00 EDT 2015

OSTI ID:1484262

Spears, Robert ^[1]; Mertz, Greg ^[2]; Coleman, Justin ^[1]

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1. Idaho National Laboratory
2. CJC and Associates, Los Alamos, NM, USA

A complementary paper, “Development of a Nonlinear Time Domain Methodology (Part I),” lays out a methodology to follow when performing nonlinear soil-structure interaction (NLSSI) analysis. This paper presents results from numerical analyses that compare a recently verified and validated version of SASSI with those from a NLSSI code using increasing levels of earthquake ground motion. Comparisons will be presented at multiple locations inside a generic nuclear power plant structure. The generic NPP is placed on a well-studied soil site. NLSSI results are verified by comparing the recently V&V version of SASSI with NLSSI. At low levels of ground motion the linear analysis and NLSSI produce similar results with results diverging for higher levels of ground motion. Results show that differences in the spectral accelerations calculated using the equivalent linear and nonlinear methods are observed at significant levels of ground motion shaking. For the NPP analyse, the differences are associated with gapping and sliding, which cannot be captured explicitly with equivalent linear analysis.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1484262
• Report Number(s): INL/CON-15-35497-Rev000
• Conference Information: 23rd International Conference on Structural Mechanics in Reactor Technology (SMiRT23), Manchester, United Kingdom, 08/10/2015 - 08/14/2015
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
nonlinear
soil