000021833 001__ 21833
000021833 005__ 20170622131307.0
000021833 04107 $$aeng
000021833 046__ $$k2017-06-15
000021833 100__ $$aLavorato, Davide
000021833 24500 $$aSEISMIC BEHAVIOUR OF ISOLATED RC BRIDGES SUBJECTED TO ASYNCHRONOUS SEISMIC INPUT

000021833 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021833 260__ $$bNational Technical University of Athens, 2017
000021833 506__ $$arestricted
000021833 520__ $$2eng$$aThe seismic actions used to design long structures, as bridges, should be attentively evaluated, since, due to seismic wave propagation through soil, at distant foundation points signals are different. Signal frequency content varies from point to point for at least two reasons: soil-wave interaction; wave traveling time from one point to the other. Asynchronous seismic waves produce distortions at the bridge foundations which are usually not considered in design practice. In this paper, the responses of two RC bridges, one with deck supported by traditional bearing and one by Lead Rubber Bearings (isolators), subjected to asynchronous or synchronous signals were studied. These signals were generated at the surface starting from the EW components of the main shock recorded at two recording stations (AQA, AQV) near L’Aquila city (Italy) on 4-06-2009. The soil distortions which produce maximum stresses on deck or on piers were evaluated for the two bridges (non-isolated and isolated) in case of synchronous and non-synchronous excitations. The first results are discussed to understand the effects of asynchronous excitation on the responses of the two bridges.

000021833 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021833 653__ $$aexisting bridge, seismic isolation, asynchronous seismic signals, soil distortion, seismic response

000021833 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021833 720__ $$aLavorato, Davide$$iZhou, Wei-Dong$$iBriseghella, Bruno$$iVanzi, Ivo$$iNuti, Camillo$$iMa, Hai-Bin$$iRago, Carlo$$iBergami, Alessandro Vittorio
000021833 8560_ $$ffischerc@itam.cas.cz
000021833 8564_ $$s577305$$uhttps://invenio.itam.cas.cz/record/21833/files/18104.pdf$$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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000021833 962__ $$r21500
000021833 980__ $$aPAPER