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| Research on passive control theory for multi-mode coupled buffeting control of bridges |
| Revised:January 07, 2004 |
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| DOI：10.7511/jslx20061020 |
| KeyWord:MTMD |
| ZENG Xian-wu HAN Da-jian |
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| Abstract: |
| Tuned mass damper(TMD) is proven to be effective against wind-induced buffeting response and has been installed on some existed bridges.However,the traditional buffeting control method using TMD or MTMD has predominantly been accomplished by single-mode-based method or SRSS method in which the aerodynamic coupling effects among the modes are neglected.Based on multi-mode coupled buffeting theory proposed by Scanlan and passive control theory of multiple tuned mass dampers(MTMD),a method for multi-mode coupled buffeting control using multiple tuned mass dampers for bridges is established in this paper.Multi-mode participation and aerodynamic coupling between modes or modal displacement components in a mode are all taken into account in the formulation and each TMD can be installed anywhere on the bridge deck.Finally,time-domain approach is used to verify the proposed method and the results agree well with those of time-domain approach,which shows that the method is correct. |
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