000019836 001__ 19836
000019836 005__ 20170118182338.0
000019836 04107 $$aeng
000019836 046__ $$k2017-01-09
000019836 100__ $$aShi, Yundong
000019836 24500 $$aCollapse Analysis of Long-Span Reinforced Concrete Continuous Bridge Under Extreme Earthquakes

000019836 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019836 260__ $$b
000019836 506__ $$arestricted
000019836 520__ $$2eng$$aLong-span bridge structures tend to fail under the extreme earthquakes, and nonlinearity should be considered in simulating this kind of event. It is difficult to simulate seismic-induced bridge collapse numerically with finite element analysis though, because the large degrees of freedom of the bridge model will result in unacceptable computational costs. Therefore, a simplified finite element model of the reinforced concrete continuous bridge is necessary to consider the nonlinearities of the bridge with high computational efficiency. In addition, the bearing capacities of fixed bearings are normally assumed to be infinite, and their influences on seismic damage of the bridge are neglected. In a real bridge, the bearing capacities of fixed bearings are designed to restrain the lateral displacements of girders, which will affect the response of the overall bridge structure. In this paper, a simplified finite element model was established for a typical three-span reinforced concrete continuous bridge. The simplified finite element model is verified to be effective by comparing the numerical results with the experimental results on mechanical behavior of the reinforced concrete pier and girder, and by comparing dynamic property of the bridge obtained using the simplified finite element model and a detailed finite element model. The collapse process of the reinforced concrete continuous bridge with different bearing capacities under the extreme earthquakes are simulated, and the collapse modes are analyzed. The numerical results indicated that the bearing capacity had an important influence on the collapse modes of the bridge.

000019836 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019836 653__ $$along-span continuous bridge, collapse analysis, simplified finite element model, fixed bearing, extreme earthquake

000019836 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019836 720__ $$aShi, Yundong$$iLi, Zhongxian$$iChen, Yu
000019836 8560_ $$ffischerc@itam.cas.cz
000019836 8564_ $$s1687098$$uhttps://invenio.itam.cas.cz/record/19836/files/4511.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4511.
000019836 962__ $$r16048
000019836 980__ $$aPAPER