000020252 001__ 20252
000020252 005__ 20170118182404.0
000020252 04107 $$aeng
000020252 046__ $$k2017-01-09
000020252 100__ $$aSousa, Luis Miguel
000020252 24500 $$aConditional Fragility Functions and the Uncertainty in Vulnerability Assessment of Building Portfolios

000020252 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020252 260__ $$b
000020252 506__ $$arestricted
000020252 520__ $$2eng$$aState-of-the-art methods for the assessment of building fragility consider the structural capacity and seismic demand variability in the estimation of the probability of exceeding different damage states. However, questions remain regarding the appropriate treatment of such sources of uncertainty from a statistical significance perspective. In this study, material, geometrical and mechanical properties of a number of building classes are simulated by means of a Monte Carlo sampling process in which the statistical distribution of the aforementioned parameters is taken into consideration. Record selection is performed in accordance with hazard-consistent distributions of a comprehensive set of intensity measures, and issues related with sufficiency, efficiency, predictability and scaling robustness are addressed. Based on the appraised minimum number of ground motion records required to achieve statistically meaningful estimates of response variability conditioned on different levels of seismic intensity, the concept of conditional fragility functions is presented. These functions translate the probability of exceeding a set of damage states as a function of a secondary sufficient intensity measure, when records are selected and scaled for a particular level of primary seismic intensity parameter. It is demonstrated that this process allows a hazard-consistent and statistically meaningful representation of uncertainty and correlation in the estimation of intensity-dependent damage exceedance probabilities.

000020252 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020252 653__ $$astructural capacity; seismic demand; ground motion selection; fragility; uncertainty and correlation.

000020252 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020252 720__ $$aSousa, Luis Miguel$$iCrowley, Helen$$iMarques, Mã¡rio$$iSilva, Vitor
000020252 8560_ $$ffischerc@itam.cas.cz
000020252 8564_ $$s476544$$uhttps://invenio.itam.cas.cz/record/20252/files/834.pdf$$yOriginal version of the author's contribution as presented on USB, paper 834.
000020252 962__ $$r16048
000020252 980__ $$aPAPER