| 张鸣祥,王建国,汪权.大跨度桥梁多模态耦合颤振的TMD控制[J].计算力学学报,2012,29(3):315~320 |
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| 大跨度桥梁多模态耦合颤振的TMD控制 |
| Multi-mode coupled flutter numerical simulation for TMD control of long-span bridges |
| 投稿时间：2010-12-13 修订日期：2011-05-20 |
| DOI：10.7511/jslx20123004 |
| 中文关键词: 调谐质量阻尼器 被动控制 颤振 临界风速 悬索桥 |
| 英文关键词:TMD passive control flutter critical wind speed suspension bridge |
| 基金项目:国家自然科学基金(11172087)资助项目. |
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| 中文摘要: |
| 推导了装有TMD的结构在气动自激力作用下的动力微分方程,基于模态空间中多模态耦合颤振分析手段,运用考虑安装TMD的多模态自动分析法对结构-TMD系统进行了颤振分析和TMD控制分析,使多模态自动分析法能适用于TMD颤振控制分析,避免了双参数搜索和迭代计算,提高了计算效率。对某在建三塔悬索桥进行了原结构颤振分析和TMD-结构颤振频域分析,探讨TMD控制参数对颤振临界风速的影响。 |
| 英文摘要: |
| This study addresses the methodology and parameter study of TMD control for long-span bridges.The differential equations governing the motion of the structure with TMDs are established in the mode space,in which the effects of aerodynamic self-excited force are taken into account.The revised automatic analysis for multimode-coupled flutter,which is the single parameter searching method without iterations,is adapted for the flutter control analysis of structure-TMDs system based on the complex modal theory.Taking a three-tower suspension bridge being built crossing the Yangtze River for a numerical example,the flutter analysis of the original bridge and flutter control analysis of bridge-TMDs system are performed.The TMD parameters are discussed for influence of critical wind speed. |
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