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- W4385992713 abstract "Installation of longitudinal large fluid viscous dampers (FVDs) between the deck and pylon has been widely used in seismic design of long-span cable-stayed bridge. For a long-span cable-stayed bridge, the period of the first-order which mode is deck longitudinal sway is long and far away from predominant period of conventional ground motions. If the seismic design of FVDs mainly targets at effectively decreasing longitudinal displacement of deck and seismic forces of major components of the bridge, FVDs may provide super high damping level to deck longitudinal movement. Under this situation, the effects on mechanical properties of long-span cable-stayed bridge is investigated by modal vibrations. The modal vibrations achieved by applying lst~150th order mode shapes one by one as initial displacement on the bridge in four conditions, namely undamped, only FVDs considered, only system damping considered, both FVDs and system damping considered. Among them, the condition of only FVDs considered is the core since FVDs is the only source of structural damping in this case. By comparison responses under the four conditions, the super high damping phenomenon of longitudinal vibration caused by nonlinear fluid viscous dampers (NFVDs) is demonstrated and that NFVDs has provided non-ignorable supplementary equivalent viscous damping ratio on some nonfirst modal vibrations is illustrated." @default.
- W4385992713 created "2023-08-19" @default.
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- W4385992713 date "2022-03-01" @default.
- W4385992713 modified "2023-10-14" @default.
- W4385992713 title "Mechanical Characteristics of Long-span Cable-stayed Bridge with large FVDs" @default.
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- W4385992713 doi "https://doi.org/10.1109/icitbs55627.2022.00304" @default.
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