| 曾宪武,韩大建.桥梁多模态耦合抖振控制方法研究[J].计算力学学报,2006,23(1):107~112 |
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| 桥梁多模态耦合抖振控制方法研究 |
| Research on passive control theory for multi-mode coupled buffeting control of bridges |
| 修订日期：2004-01-07 |
| DOI：10.7511/jslx20061020 |
| 中文关键词: 大跨度桥梁 抖振控制 多模态耦合抖振 |
| 英文关键词:MTMD |
| 基金项目: |
| 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: 1530 |
| 全文下载次数: 8 |
| 中文摘要: |
| 目前已证实调谐质量阻尼器（TMD）可以有效控制桥梁抖振响应，并已在工程中得到应用。然而，传统桥梁抖振被动控制理论是基于单模态叠加SRSS法，无法考虑多模态参与作用和模态间气动耦合效应，本文基于Scanlan多模态耦合抖振理论和多重调谐质量阻尼器（MTMD）被动控制理论，提出一种桥梁多模态耦合抖振MTMD控制方法，该方法可以考虑多模态参与作用、模态间气动耦合效应和单模态中各模态位移分量的气动耦合，且对各TMD在主梁上的安装位置没有任何限制。本文最后采用时域仿真方法对该方法进行了验证，两者计算结果吻合良好，表明本文所提出的方法的正确性。 |
| 英文摘要: |
| 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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