000010060 001__ 10060
000010060 005__ 20141205154141.0
000010060 04107 $$aeng
000010060 046__ $$k2008-10-12
000010060 100__ $$aGeorgakis, Christos T.
000010060 24500 $$aSeismic Performance of Multi-Span RC Railway Bridges

000010060 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010060 260__ $$b
000010060 506__ $$arestricted
000010060 520__ $$2eng$$aPresently, there is no clear method for determining the optimal railway bridge design for a particular ground type and expected seismic intensity. Four main types of RC bridge dominate the current multi-span railway bridge design trends – the Simply Supported Beam, Continuous Box-Girder (CBG), CBG with Lead Rubber Bearing (LRB) supports and the laterally fixed continuous deck (CRB) with LRBs. In this paper, the seismic performance of these four types is examined for varying ground types and seismic intensities. For the purposes of comparison, all of the bridges have five spans with identical span lengths and topography. Initially, typical bridge deck, pier and bearing configurations are chosen and analyzed through a series of nonlinear time-history analyses using synthetic accelerograms, in which plastic hinge formation is permitted. Next, an optimization of the bridge configurations is undertaken to increase the performance and reduce the overall bridge cost. Finally, an evaluation of the lifetime bridge costs are made assuming current prices, including costs relating to the damage associated with the expected seismic events. This is accomplished through the use of approximated damage states and fragility curves in relation to PGA. The cost comparisons clearly show that particular bridge types perform better than others economically for specific ground types and expected seismic intensities, even though in some cases they may be expected to suffer larger damages during their lifetime.

000010060 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010060 653__ $$aRC bridge design, seismic performance, design-life costs

000010060 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010060 720__ $$aGeorgakis, Christos T.$$iBarrau, Xavier
000010060 8560_ $$ffischerc@itam.cas.cz
000010060 8564_ $$s478109$$uhttps://invenio.itam.cas.cz/record/10060/files/05-02-0001.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0001.
000010060 962__ $$r9324
000010060 980__ $$aPAPER