000011346 001__ 11346
000011346 005__ 20141205155901.0
000011346 04107 $$aeng
000011346 046__ $$k2008-10-12
000011346 100__ $$aPhung, Vietanh
000011346 24500 $$aThree-Dimensional Nonlinear Degrading Model for Earthquake Response Analyses of Concrete Bridges

000011346 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011346 260__ $$b
000011346 506__ $$arestricted
000011346 520__ $$2eng$$aThis paper presents a three-dimensional nonlinear degrading stiffness model capable of capturing stiffness degradation in bilateral directions for earthquake response analyses of reinforced concrete bridges. Stiffness degradations due to flexural and shear damage are considered. The model can trace the progress of damage from initial failure through gradual degradation of the member stiffness due to accumulative effects of damage to ultimate collapse. Flexural degradation is quantified by a cumulative flexural damage index, which is computed based on consideration of the maximum rotation and dissipated hysteretic energy of the element. Shear degradation is quantified by a shear damage index, which is derived from the shear demand and capacity relationship. Nonlinear earthquake response analyses of three-span reinforced concrete bridges subjected to bidirectional earthquake excitations are carried out to validate the model. Bridges of ductile dominated and shear dominated behavior structures are studied. Numerical results are presented in terms of the maximum displacement of bridge deck, moment at plastic hinges, local and global damage index and normalized hysteretic energy.

000011346 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011346 653__ $$aGround motion, earthquake response, damage index, shear degradation, non-linear analysis

000011346 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011346 720__ $$aPhung, Vietanh$$iLau, David
000011346 8560_ $$ffischerc@itam.cas.cz
000011346 8564_ $$s175060$$uhttps://invenio.itam.cas.cz/record/11346/files/05-02-0108.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0108.
000011346 962__ $$r9324
000011346 980__ $$aPAPER