Reliability analysis of shearwall structure with soil structure interaction
The reliability assessment of a site-dependent structural system under seismic environment is studied in this report. The stiffness parameters of the system (soil as well as structure) are considered as random variable. The random distribution of modal frequencies are obtained. A new response spectral density function is defined which include the effect of randomness of the model frequencies. A stationary random process is used to simulate the seismic excitation load along with the random operational loads. The random vibration analysis in frequency domain is used to obtain the statistical properties of the dynamic response of structure to a stochastic ground excitation. A typical shear wall supporting the containment building of a hypothetical nuclear power plant located on uniform sand deposit is chosen for the numerical study. A sensitivity analysis is performed to evaluate the influence of various parameters on the reliability of the system, such as: the effect of soil-structure interaction, stiffnesses of soil, randomness of strength of materials (concrete, steel), distribution of reinforcement in concrete members, types of design spectral densities, and different level of Safe Shut down Earthquake acceleration and maximum possible acceleration, etc. A computer program is developed based on the method presented in this study to perform the numerical analysis.
- Research Organization:
- Polytechnic Inst. of Brooklyn, NY (USA)
- OSTI ID:
- 7079657
- Country of Publication:
- United States
- Language:
- English
Similar Records
Estimation of structural reliability under combined loads. [PWR; BWR]
Reliability assessment of nuclear structural systems
Related Subjects
220900 -- Nuclear Reactor Technology-- Reactor Safety
58 GEOSCIENCES
580201* -- Geophysics-- Seismology & Tectonics-- (1980-1989)
BUILDINGS
CONTAINMENT
CONTAINMENT BUILDINGS
MATHEMATICS
MECHANICAL PROPERTIES
NUMERICAL ANALYSIS
REACTORS
SAND
SEISMIC EFFECTS
SHEAR PROPERTIES
SOIL-STRUCTURE INTERACTIONS
WALLS