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| Flutter stability analysis of suspension bridges by precise time-integration method |
| Revised:October 06, 1999 |
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| DOI：10.7511/jslx20013064 |
| KeyWord:suspension bridges,flutter stability,precise time-integration method |
| LIU Gao WANG Xiu-wei 2 QIANG Shi-zhong 3 |
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| Abstract: |
| The application of the precise time-integration method in the flutter stability analysis of suspension bridges is studied. Firstly, the bridge structure is combined with wind as a whole system, and the system's state-space equation about the generalized coordinates of modes is assembled. Then, the time-history of the state-space vector is computed by the precise time-integration method. According to the logarithmic decrement of the time-history of the state-space vector, the stability of the system is estimate. Finally, the British Severn Bridge is analyzed to confirm the method. |
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