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- W2026164581 abstract "Forced and ambient dynamic tests of the Hakucho Bridge were carried out to study the dynamic characteristics of this suspension bridge. Dense-array measurement was employed in order to capture not only natural frequencies and damping, but also the mode shapes of the bridge. The natural frequencies and mode shapes obtained from the forced and ambient vibration tests agreed well with those calculated by a three-dimensional finite element model. A new method that combines the random decrement method with the Ibrahim time domain method is proposed to systematically identify the natural frequencies, damping, and mode shapes. This method is successfully applied to ambient vibration data. It is shown that the natural frequency of the first vertical bending mode decreases noticeably as the wind speed increases. It is also shown that the shape of the first vertical bending mode changes slightly near the towers, depending on the wind velocity; this finding indicates that the change may be associated with friction in the bearings at the towers. Finally, application of the Global Positioning System to measure static displacement of the girder is explained." @default.
- W2026164581 created "2016-06-24" @default.
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- W2026164581 date "2000-01-01" @default.
- W2026164581 modified "2023-10-02" @default.
- W2026164581 title "Forced and Ambient Vibration Tests and Vibration Monitoring of Hakucho Suspension Bridge" @default.
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- W2026164581 doi "https://doi.org/10.3141/1696-43" @default.
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