Abstract
Concrete-filled steel tubes offer high load-carrying capacity and good ductility promising remarkable economical benefits. In this paper, an application of concrete-filled tubes to main arch ribs is discussed based on 3-dimensional static and dynamic analyses of a prototype half-through arch bridge. Particular attention has been paid to modeling nonlinearities arising in the arch rib composed of multiple concrete-filled tubes. The static finite element solution provides information useful in characterizing the ultimate strength and failure mode of the bridge.The bridge performance during a strong earthquake motion comparable to the Great Hanshin Earthquake is assessed in detail through a nonlinear time-history analysis.
