000020305 001__ 20305
000020305 005__ 20170118182408.0
000020305 04107 $$aeng
000020305 046__ $$k2017-01-09
000020305 100__ $$aBiondini, Fabio
000020305 24500 $$aLife-Cycle Resilience of Deteriorating Bridge Networks Under Earthquake Scenarios

000020305 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020305 260__ $$b
000020305 506__ $$arestricted
000020305 520__ $$2eng$$aResilience of bridges and infrastructure networks is generally investigated considering damage and disruption caused by sudden extreme events, such as earthquakes. However, damage could also arise continuously in time due to aging and structural deterioration, which can modify over time the structural performance and functionality and, consequently, the system resilience. Therefore, for critical infrastructures exposed to seismic and environmental hazards, resilience depends on the time of occurrence of the seismic event. This paper investigates the life-cycle seismic resilience of aging infrastructures and presents a probabilistic approach to seismic assessment of deteriorating bridges and resilience analysis of road networks under prescribed earthquake scenarios. The time-variant seismic fragilities of the deteriorating bridges in the network are assessed for several limit states, from damage limitation up to collapse. The seismic demand is evaluated for each bridge based on a ground motion prediction equation in terms of earthquake magnitude and epicentral distance. The corresponding levels of seismic damage are derived from the time-variant fragilities and related to vehicle restrictions and traffic limitations. A traffic analysis is carried out over the entire road network to compute both the time-variant system functionality and life-cycle seismic resilience under prescribed post-event recovery processes. The proposed approach is applied to reinforced concrete bridges in a highway network with detour and re-entry link. The bridges are exposed to chloride-induced corrosion and earthquake scenarios considering different magnitude and epicenter location. The results show the detrimental effects of aging and structural deterioration and emphasize the role of the earthquake scenario on the time-variant seismic performance of bridge structures and life-cycle resilience of road networks.

000020305 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020305 653__ $$aSeismic resilience; system functionality; road networks; aging bridges; corrosion; life-cycle performance.

000020305 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020305 720__ $$aBiondini, Fabio$$iCapacci, Luca$$iTiti, Andrea
000020305 8560_ $$ffischerc@itam.cas.cz
000020305 8564_ $$s716636$$uhttps://invenio.itam.cas.cz/record/20305/files/939.pdf$$yOriginal version of the author's contribution as presented on USB, paper 939.
000020305 962__ $$r16048
000020305 980__ $$aPAPER