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Incorporating failure mode uncertainty into probabilistic assessment of RC components
Highlights Accounting for all sources of uncertainties in probabilistic seismic assessment. Failure mode variability in reinforced concrete components. Concept of competing failure mode analysis in seismic assessment. Correlation between mechanics-based and statistical learning-based models in development of fragility curves.
Abstract This paper makes a case for the propagation of relevant uncertainties in prediction of the seismic response of reinforced concrete components. Conventional probabilistic seismic assessment studies only consider parameter uncertainty and model error as the dominant forms of uncertainty in a component’s capacity. In this paper, firstly, experimental evidences of failure mode variability in nominally identical specimens are presented. Furthermore, a simple approach to account for aleatory uncertainty due to variability in failure mode is presented. Although this paper is focused on reinforced concrete components, the concept of failure mode variability can be applied to components of other materials as well. The paper suggests that failure mode uncertainty needs to be adequately treated in component fragility functions as well as in probabilistic assessment of global collapse capacity.
Incorporating failure mode uncertainty into probabilistic assessment of RC components
Highlights Accounting for all sources of uncertainties in probabilistic seismic assessment. Failure mode variability in reinforced concrete components. Concept of competing failure mode analysis in seismic assessment. Correlation between mechanics-based and statistical learning-based models in development of fragility curves.
Abstract This paper makes a case for the propagation of relevant uncertainties in prediction of the seismic response of reinforced concrete components. Conventional probabilistic seismic assessment studies only consider parameter uncertainty and model error as the dominant forms of uncertainty in a component’s capacity. In this paper, firstly, experimental evidences of failure mode variability in nominally identical specimens are presented. Furthermore, a simple approach to account for aleatory uncertainty due to variability in failure mode is presented. Although this paper is focused on reinforced concrete components, the concept of failure mode variability can be applied to components of other materials as well. The paper suggests that failure mode uncertainty needs to be adequately treated in component fragility functions as well as in probabilistic assessment of global collapse capacity.
Incorporating failure mode uncertainty into probabilistic assessment of RC components
Opabola, Eyitayo A. (author) / Elwood, Kenneth J. (author)
Structural Safety ; 87
2020-06-07
Article (Journal)
Electronic Resource
English
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