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JOURNAL OF STRUCTURAL MECHANICS AND EARTHQUAKE ENGINEERING
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Damping characteristics of cable]stayed bridges associated with energy dissipation at movable supportsD
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Damping characteristics are one of the most significant factors for seismic design of cable-stayed bridges. Among various sources of energy dissipation which results in damping of cable-stayed bridges, an effect of energy dissipation at movable supports is studied in this paper, because it can be considered one of the major factors affecting damping characteristics of cable-stayed bridge in longitudinal vibration. Three cable-stayed bridges are idealized by discrete analytical models in which friction force developed at movable supports is modeled by the Coulomb friction. Damping characteristics are determined by computed decay of free oscillation developed by smooth release from the original deformation specified.
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