Based on Nonlinear Viscous Dampers Seismic Behavior Research of a Long Span Cable-Stayed Bridge
The seismic behavior research of Fengdu Bridge with nonlinear viscous dampers will be conducted to investigate two parameters of damping coefficient C and damping exponent ξ through nonlinear dynamic time-history analysis. Simultaneously, the analysis results are compared with the seismic response without viscous dampers and proposed control methods and formulas of a reasonable selecting damping coefficient C and damping exponent ξ are provided. The parameters sensitivity study indicates that setting dampers in longitudinal direction of bridge can reduce the relative displacement of key positions and the response of the bridge, the beneficial effect of the isolation in the longitudinal direction, but important amplification occurs in the vertical direction for relatively high frequency components. Moreover, the reference of application of nonlinear viscous damper will be provided for similar projects.
H. Y. Jia et al., "Based on Nonlinear Viscous Dampers Seismic Behavior Research of a Long Span Cable-Stayed Bridge", Advanced Materials Research, Vols. 255-260, pp. 1214-1219, 2011