Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An Unbiased Estimation of Empirical Lognormal Fragility Functions with Uncertainties on the Ground Motion Intensity Measure
In an effort to incorporate building fragility into seismic risk assessment, simple formulations of fragility functions are developed, such as a cumulative lognormal distribution, which describe the probability of damage of a building experiencing a given ground motion. We show here that when a lognormal fragility function is empirically estimated from data with uncertainty on the intensity of ground motion experienced by buildings, the estimate is biased towards fragility functions with larger variances. We show that this bias, due to the uncertainty on the ground motion, can be semi-analytically determined and we devise a methodology to correct for it.
An Unbiased Estimation of Empirical Lognormal Fragility Functions with Uncertainties on the Ground Motion Intensity Measure
In an effort to incorporate building fragility into seismic risk assessment, simple formulations of fragility functions are developed, such as a cumulative lognormal distribution, which describe the probability of damage of a building experiencing a given ground motion. We show here that when a lognormal fragility function is empirically estimated from data with uncertainty on the intensity of ground motion experienced by buildings, the estimate is biased towards fragility functions with larger variances. We show that this bias, due to the uncertainty on the ground motion, can be semi-analytically determined and we devise a methodology to correct for it.
An Unbiased Estimation of Empirical Lognormal Fragility Functions with Uncertainties on the Ground Motion Intensity Measure
Ader, Thomas (Autor:in) / Grant, Damian N. (Autor:in) / Free, Matthew (Autor:in) / Villani, Manuela (Autor:in) / Lopez, Jorge (Autor:in) / Spence, Robin (Autor:in)
Journal of Earthquake Engineering ; 24 ; 1115-1133
02.07.2020
19 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Epistemic Uncertainties in Component Fragility Functions
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Empirical ground-motion models adapted to the intensity measure ASA 40
| British Library Online Contents | 2015