| 大跨斜拉桥在移动荷载作用下的振动控制 |
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| 引用本文： | 万信华. 大跨斜拉桥在移动荷载作用下的振动控制[J]. 华中科技大学学报(城市科学版), 2010, 27(1): 40-45 |
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| 作者姓名： | 万信华 |
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| 作者单位： | 中铁第四勘察设计院集团有限公司,湖北,武汉,430063 |
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| 摘 要： | 多重调质阻尼器(MTMD)是由多个具有不同频率、不同质量或不同阻尼的调质阻尼器构成的动力吸振器群,被广泛应用于结构的被动控制中.采用频域分析方法考虑TMD在多自由度结构中的布置,推演了具有MTMD多自由度结构振动控制振型广义坐标的频率响应方程,以一座大跨斜拉桥为例,针对结构振动的控制振型,进行了MTMD参数分析,并研究了MTMD控制下斜拉桥在移动荷载作用下的竖向振动,计算结果表明,在随机不平顺桥面条件下,MTMD能够有效减小结构在移动荷载激励下的竖向动力响应.
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| 关 键 词： | 多重调质阻尼器(MTMD) 振动控制 参数优化 动力响应 斜拉桥 |
Vibration Control of a Long-span Cable-Stayed Bridge under Moving Load |
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| WAN Xin-hua. Vibration Control of a Long-span Cable-Stayed Bridge under Moving Load[J]. Journal of Huazhong University of Science and Technology, 2010, 27(1): 40-45 |
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| Authors: | WAN Xin-hua |
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| Affiliation: | WAN Xin-hua(China Railway SiYuan Survey , Design Group Co Ltd,Wuhan 430063,China) |
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| Abstract: | Multiple turned mass damper(MTMD) is a kind of dynamic absorber group that consists of a large number of small oscillators with distributed frequencies and damping or mass.Taking the installation of TMD into account,the frequency-amplitude function has been derived for MDOF structures with MTMD by using the frequency-domain analysis method.Based on this function,the parameter optimization and design of MTMD are carried out for a long-span cable-stayed bridge.The numerical results show that MTMD could effect... |
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| Keywords: | multiple turned mass dampers vibration control parameter optimization dynamic response cable-stayed bridge |
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