000011473 001__ 11473
000011473 005__ 20141205155914.0
000011473 04107 $$aeng
000011473 046__ $$k2008-10-12
000011473 100__ $$aRota, Maria
000011473 24500 $$aDirect Derivation of Fragility Curves from Italian Post-Earthquake Survey Data

000011473 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011473 260__ $$b
000011473 506__ $$arestricted
000011473 520__ $$2eng$$aA very complete and homogeneous database of post-earthquake building inspections, carried out after the main Italian events of the last 30 years, has been processed to derive fragility curves for 23 building typologies. The records (more than 91000) have been converted into a single damage scale with 5 levels of damage, plus the case of no damage. For each affected municipality a value of PGA and Housner Intensity (IH) has been evaluated using attenuation laws. Experimental data have been converted in damage probability matrices and then fitted through lognormal fragility curves, with an advanced nonlinear regression algorithm. The relative reliability of each point has been taken into account by applying the bootstrap technique. The significant concentration of experimental data at low levels of ground motion and the selected analytical expression determine the peculiar shape of some of the curves, with a very steep initial branch followed by an almost horizontal curve for increasing values of ground motion. Explanations and possible solutions are discussed.

000011473 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011473 653__ $$afragility curves, vulnerability, seismic risk, post-earthquake damage data

000011473 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011473 720__ $$aRota, Maria$$iPenna, Andrea$$iStrobbia, Claudio$$iMagenes, G.
000011473 8560_ $$ffischerc@itam.cas.cz
000011473 8564_ $$s242240$$uhttps://invenio.itam.cas.cz/record/11473/files/09-01-0148.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 09-01-0148.
000011473 962__ $$r9324
000011473 980__ $$aPAPER