基于TMD的大跨度斜拉桥风致随机振动控制研究
Research on Wind-induced Random Vibration Control of Long-span Cable-stayed Bridges Using TMD
肖祥 1薛宗颜1
作者信息
- 1. 武汉理工大学交通与物流工程学院 武汉 430063
- 折叠
摘要
本文开展基于TMD的大跨度桥梁风致随机振动控制研究.建立了随机风荷载作用下桥梁—TMD系统随机振动响应分析的虚拟激励分析程序.提出了随机振动响应控制的TMD参数优化方法.以西固黄河大桥为背景,开展了实际桥梁的风致振动控制分析.结果表明:基于本文方法TMD参数优化后振动控制效率可提高近9倍,横向随机位移响应的控制效率可达到28.83％,横向随机加速度响应的控制效率可达到28.8％.
Abstract
Research on wind-induced random vibration control of long-span bridges based on TMD was carried out.A virtual excitation analysis program for random vibration response analysis of bridge-TMD system under random wind load was established and a TMD parameter optimization method for random vibration response control was proposed.Taking Xigu Yellow River Bridge as the back-ground,the wind-induced vibration control analysis of the actual bridge was carried out.The results show that the vibration control efficiency can be improved by nearly 9 times after TMD parameter op-timization based on this method.The control efficiency of lateral random displacement response can reach 28.83％,and the control efficiency of lateral random acceleration response can reach 28.8％.
关键词
简谐质量阻尼器/虚拟激励法/响应功率谱/风致桥梁振动响应/随机振动Key words
tuned mass damper/the pseudo excitation method/response power spectrum/wind-in-duced bridge vibration response/random vibration引用本文复制引用
出版年
2024
NETL
NSTL
万方数据