000021829 001__ 21829
000021829 005__ 20170622131306.0
000021829 04107 $$aeng
000021829 046__ $$k2017-06-15
000021829 100__ $$aLavorato, Davide
000021829 24500 $$aSURFACE GENERATION OF ASYNCHRONOUS SEISMIC SIGNALS FOR THE SEISMIC RESPONSE ANALYSIS OF BRIDGES

000021829 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021829 260__ $$bNational Technical University of Athens, 2017
000021829 506__ $$arestricted
000021829 520__ $$2eng$$aThe seismic signals, recorded at different surface points during the propagation of the seismic waves through soil, show differences due to the soil-wave interaction. The seismic design actions should be evaluated properly in case of distant foundation points as these differences can be great. In this paper, asynchronous seismic signals are generated at surface starting from a few well-known recordings for the same seismic event. The EW accelerometric components of the main shock recorded at two recording stations (AQA, AQV) near L’Aquila city (Italy) on 4-06-2009 are the generation inputs. The seismic wave propagates along the direction between AQA and AQV. These signals are representative of a possible asynchronous excitation applied on a bridge. Five arrays of asynchronous accelerograms are generated at the foundations of the bridge to perform statistical elaboration of the results. Different bridge positions are supposed along the propagation direction of the wave to evaluate the spatial variability of the generated signals. The generated signals at AQA and AQV stations are compared with the available recordings at the same points (generation inputs) in term of power spectra, acceleration and displacement response spectra. Finally, the most detrimental soil distortions for the bridge deck are calculated for some bridge positions.

000021829 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021829 653__ $$anumerical generation, asynchronous signals, soil distortions, signal elaboration, bridge design

000021829 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021829 720__ $$aLavorato, Davide$$iZhou, Wei-Dong$$iVanzi, Ivo$$iBriseghella, Bruno$$iNuti, Camillo$$iMa, Hai-Bin$$iBergami, Alessandro Vittorio$$iFiorentino, Gabriele
000021829 8560_ $$ffischerc@itam.cas.cz
000021829 8564_ $$s533105$$uhttps://invenio.itam.cas.cz/record/21829/files/18098.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS24] Seismic Input for Bridges: From Scenario Earthquakes to Nonsynchronous Input
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000021829 962__ $$r21500
000021829 980__ $$aPAPER