000011090 001__ 11090
000011090 005__ 20141205155835.0
000011090 04107 $$aeng
000011090 046__ $$k2008-10-12
000011090 100__ $$aMwafy, Aman M.
000011090 24500 $$aInelastic Seismic Response of a 59-Span Bridge with Soil-Structure Interaction

000011090 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011090 260__ $$b
000011090 506__ $$arestricted
000011090 520__ $$2eng$$aThis paper summarizes the results of a comprehensive study carried out to assess the seismic response of a 59-span bridge, considering Soil-Structure Interaction (SSI). The bridge was built in the early seventies at a distance of about 5 km from a major fault. The methodology adopted to idealize the bridge and its foundation system for elastic and inelastic analysis is briefly described. The SSI analysis is significant in this study due to the length of the bridge, the massive and stiff foundation and the relatively soft deep soil of the site. Detailed three-dimensional dynamic response simulations of the entire bridge are undertaken using several analysis tools to verify the analytical models for the extensive inelastic analysis. 144 input ground motions are employed to assess the inelastic response of the 2160-meter bridge. The strong-motion records used are the outcome of a site-specific seismic hazard assessment. The study identifies areas of vulnerability in the investigated bridge and assesses its response at three hazard levels, corresponding to 475, 975 and 2475 years return periods. It is concluded that the seismic response of the bridge at the 500 years ground motions is unacceptable, while the demands under the effect of the 1000 years ground motions almost exceed the capacity of most bridge components. The demands significantly increase under the effect of the 2500 years earthquake scenario and considerably exceed the collapse limit states. The results clearly reflect the pressing need to retrofit different bridge components to mitigate anticipated seismic risk. The presented assessment study exploits the most recent research outcomes to realistically predict the complex seismic response of this major bridge and thus contributes to improved public safety.

000011090 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011090 653__ $$aMajor highway bridges, soil-structure interaction, inelastic analysis, high seismicity regions, bridges deficiencies.

000011090 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011090 720__ $$aMwafy, Aman M.$$iKwon, Oh-Sung$$iElnashai, Amr S.
000011090 8560_ $$ffischerc@itam.cas.cz
000011090 8564_ $$s1370086$$uhttps://invenio.itam.cas.cz/record/11090/files/05-02-0047.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0047.
000011090 962__ $$r9324
000011090 980__ $$aPAPER