| 曾宪武,韩大建.大跨度桥梁多模态耦合颤振DTMD控制研究[J].计算力学学报,2005,22(4):492~496 |
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| 大跨度桥梁多模态耦合颤振DTMD控制研究 |
| Investigation on a tuned mass damper with double frequencies for multi-mode coupled flutter control of long-span bridges |
| 修订日期：2003-09-08 |
| DOI：10.7511/jslx20054096 |
| 中文关键词: 大跨度桥梁DTMD 颤振控制 多模态 耦合颠振 |
| 英文关键词:long-span bridges,a tuned mass damper with double frequencies,flutter control,multi-mode,coupled flutter |
| 基金项目:广东自然科学基金(000387)资助项目. |
| 曾宪武 韩大建 |
| 华南理工大学土木工程系,广东广州510640 |
| 摘要点击次数: 1563 |
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| 中文摘要: |
| DTMD是一种具有双频率的调谐质量阻尼器，与普通TMD相比，可以同时实现对主梁竖向和扭转运动的控制，具有较高的控制效率。本文基于多模态耦合颠振理论，导出带有DTMD的桥梁颠振系统运动微分方程，采用PK—F法求解系统颠振运动微分方程，并编制了多模态耦合颠振DTMD控制和参效分析程序，以崖门斜拉桥为算例，分析了DTMD对桥梁颤振控制的有效性并与普通TMD进行了对比，计算结果表明与传统TMD相比，DTMD对桥梁颠振具有更高的控制效率。 |
| 英文摘要: |
| DTMD is a tuned mass damper with double frequencies. It can simultaneously reduce the vertical and torsional motion of the bridge deck, so it has higher control efficiency compared to the conventional tuned mass damper. Based on multi-mode coupled flutter theory, the flutter differential equations governing the motion of the bridge with DTMD are established. The PK-F method is used to solve the flutter differential equations of the system and a program of DTMD for flutter control and parametric study is also developed. Parametric study on the Yamen cable-stayed bridge is performed to investigate the effectiveness of the DTMD for bridge flutter control and the results are also compared to those of the conventional tuned mass damper. It shows that the DTMD is more effective than the conventional tuned mass damper for flutter control of bridge.\= |
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