Abstract: Current engineering practice evaluates the seismic performance of bridges based on nonlinear dynamic response analyses. Although various models exist for envelope curves of concrete confined by transverse reinforcement, ...

Abstract: The effectiveness of semiactive control using variable dampers is studied for nonlinear isolated bridges, which exhibit inelastic response at both the columns and the isolators, under near-field ground motions. The linear ...

Abstract: This paper proposes a method to evaluate the structural damping ratio of cable‐stayed bridges, based on energy dissipation. As demonstrated by many field forced‐excitation tests, the damping ratio of cable‐stayed bridges ...

Abstract: The application of artificial neural networks (ANN) to predict the confined compressive strength and corresponding strain of circular concrete columns is explored. Using available data from past experiments, an ANN model ...

Abstract: Rectangular columns constructed from steel plates are widely used to support highway bridges in Japan. Columns of this type, designed without special consideration for ductility, sustained damage during the 1995 Hyogo-ken ...

Abstract: Structures subjected to strong earthquake ground shaking may be left in a displaced condition. The amount of this residual or permanent displacement is determined by structural characteristics, including mass and hysteretic ...

Abstract: The flexural capacity of a well-designed RC column deteriorates under extreme ground motion as a result of crushing of the core concrete and buckling of the longitudinal bars in the plastic hinge regions. Thus, it is ...