Computers and Geotechnics
Computers and Geotechnics
5 years ago

Influence of model type, bias and input parameter variability on reliability analysis for simple limit states with two load terms

A general closed-form solution to compute the reliability index of a simple limit state function with two load terms and one resistance term is derived. The formulation considers contributions to margins of safety expressed in probabilistic terms due to the choice of load and resistance models, bias values, dependencies between nominal values and bias, uncertainty in estimates of nominal values for uncorrelated load and resistance terms at time of design, and average margin of safety expressed as the operational factor of safety. A sensitivity analysis and example application demonstrate the quantitative influence of the contributing random variables on reliability index.

Publisher URL: www.sciencedirect.com/science

DOI: S0266352X18300041

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