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A wind tunnel study on control methods for cable dry-galloping

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Abstract

The common vibration of cable caused by rain-wind combination has been known as most typical type and a lot kind of its countermeasures has been proposed for suppressing this phenomenon. Recently, stayed-cables were also proved that they could be excited in dry state (without rain), which is called dry-galloping. Recently, its mechanisms have been explained by axial flow, Reynolds number and so on. To clarify the characteristics of this galloping, wind tunnel test of a cable model with various kinds of wind angle was conducted. Then, three types of countermeasure were examined to suppress dry- galloping of bridge cable. The tests confirmed that the occurrence of dry-galloping depends on relative wind attacked angles and onset reduced wind speed. Furthermore, single spiral wire, double spiral wire and circular ring were found to have high effectiveness in mitigating this galloping when those are installed properly.

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Correspondence to Hung D. Vo.

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Vo, H.D., Katsuchi, H., Yamada, H. et al. A wind tunnel study on control methods for cable dry-galloping. Front. Struct. Civ. Eng. 10, 72–80 (2016). https://doi.org/10.1007/s11709-015-0309-7

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  • DOI: https://doi.org/10.1007/s11709-015-0309-7

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