Effectiveness of Storm Ropes for Long Suspension Bridge's Flutter Control
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U448.25;U441.3

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    Abstract:

    The effectiveness of storm rope for long suspension bridge's flutter control is investigated by comparing different tension forces and anchoring positions.With finite element method(FEM) and Rayleigh method,the varied tendency of frequencies is examined,which is followed up by a full-scale aeroelastic model test in wind tunnel TJ-3 in Tongji University.The study shows a notable increase of natural frequencies of bridge just by applying storm ropes to the mid-span.However,special attention should be paid to the storm rope's anchoring position at the main cable,which would induce more instability of the structure during some certain periods of construction.Because of the complexity of this issue,it is strongly recommended that wind tunnel testing be conducted before the application of storm ropes.

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WEI Zhigang, GE Yaojun, YANG Yongxin. Effectiveness of Storm Ropes for Long Suspension Bridge's Flutter Control[J].同济大学学报(自然科学版),2008,36(12):

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