Effects of different SSI parameters on the floor response spectra of a nuclear Reactor Building
The effects of several critical soil-structure interaction (SSI) parameters on the floor response spectra (FRS) of a typical nuclear Reactor Building have been examined. These parameters are deconvolution effects (reductions in ground motion with depth), strain dependency of soil dynamic properties and calculation of impedance functions using different approaches. The significant conclusions of the study, which are applicable to a deeply embedded very rigid nuclear Reactor Building, are as follows: (1) FRS generated without considering scattering effects are highly conservative; (2) Differences between FRS, generated considering strain-dependency of soil dynamic properties, and those generated using low-strain values, are not significant; and (3) the lumped-parameter approach of SSI calculations, which only uses a single value of soil shear modulus in impedance calculations, may not be able to properly compute the soil impedances for a soil deposit with irregularly varying properties with depth. An SSI approach, which can explicitly consider these variations, needs to be used in FRS calculations in such cases.
- Research Organization:
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10131569
- Report Number(s):
- WSRC-MS-91-118; CONF-910602-56; ON: DE92009909
- Resource Relation:
- Conference: 1991 American Society of Mechanical Engineers (ASME) pressure vessels and piping conference,San Diego, CA (United States),23-28 Jun 1991; Other Information: PBD: [1991]
- Country of Publication:
- United States
- Language:
- English
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Sensitivity of different SSI parameters on the floor response spectra of a typical nuclear reactor building
Sensitivity of different SSI parameters on the floor response spectra of a typical nuclear reactor building