Seismic behaviors of an upper deck type steel arch bridge
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概要
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The static and dynamic behavior of an upper deck type steel arch bridge was demonstrated. During the static analysis, both material and geometric nonlinear was considered based on finite element (FE) method. In-plane fault displacement case and out-off-plane fault displacement case were compared. During dynamic analysis, the model was modified and simplified firstly, and then the natural modals and the characteristics of the mode shape were analyzed. Both the in-plane seismic input case and out-off-plane seismic input case were analyzed. The different yielding process of members including main ribs, chord and columns were represented, and the possible damaged parts of the bridge were analyzed either.