000018705 001__ 18705
000018705 005__ 20170118182237.0
000018705 04107 $$aeng
000018705 046__ $$k2017-01-09
000018705 100__ $$aCornou, Cécile
000018705 24500 $$aEstimation of Damage Level At Urban Scale From Simple Proxies Accounting for Soil and Building Dynamic Properties

000018705 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018705 260__ $$b
000018705 506__ $$arestricted
000018705 520__ $$2eng$$aIt has been observed repeatedly in the post-earthquake investigations that buildings having frequency similar to soil frequency (coming from H/V for example) exhibit significantly greater damage due to the double resonator concept (Caracas 1967, Mexico 1985, L'Aquila 2009). However this observation is generally not taken directly into account neither in present-day seismic regulations (small scale), nor in large-scale seismic risk analysis. We considered a theoretical analysis to study the effect of frequency coincidence between soil and building. As a first step, 887 natural soil profiles with linear behavior are associated to a set of single degree of freedom elastoplastic oscillators. The results obtained are used to quantify the damage increment related to the soil-building frequency coincidence and depending on different parameters such as the loading level characterized by the peak ground acceleration (PGA), the soil profile (impedance contrast, soil frequency) and the building (ductility, fundamental frequency). This statistical work is based on Artificial Neural Network (ANN) approach that does not require any prior knowledge, confirming that the main parameter controlling the damage increase is the ratio structure frequency to soil frequency (fstruct/fsoil), with a synaptic weight exceeding 58% (when PGA represents 27.05%, the impedance contrast 10.44% and ductility 4.24%). The leading parameter, i.e. the fstruct/fsoil ratio, controls also the damage increment when considering various ductility classes with a synaptic weight percentage of 45%; the parameter that follows is the PGA.

000018705 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018705 653__ $$aspectral coincidence, frequency, damage, vulnerability, Neural Network, building.

000018705 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018705 720__ $$aCornou, Cécile$$iGuillier, Bertrand$$iBard, Pierre-Yves$$iSalameh, Christelle
000018705 8560_ $$ffischerc@itam.cas.cz
000018705 8564_ $$s671667$$uhttps://invenio.itam.cas.cz/record/18705/files/2049.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2049.
000018705 962__ $$r16048
000018705 980__ $$aPAPER