Abstract
This paper presents analysis to evaluate the efficiency of cable restrainers (CRs) stiffness on the seismic performance of curved viaducts combined use of steel stoppers at spatial multipoint. Based on the modified Hertz-damp model, considering the energy consumption the pounding phenomena at steel stoppers was exactly simulated. Considering the elasto-plastic constitutive model and shear stiffness, CRs were also modeled. The time history analysis method is used in this analysis, considering the geometrical and material non-linearities. The uniaxial yield criteria and kinematic strain hardening criteria are adopted. The constant average acceleration method is used for the dynamic response analysis. The results show that CRs combined with steel stoppers could mitigate the pounding forces at steel stoppers, displacements of the superstructures and the curvatures at pier bases by reducing the vibration difference between superstructures. The application of CRs with high stiffness can mitigate viaduct damage in earthquakes.
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