调谐黏滞质量阻尼器, 斜拉桥, 控制模型, H2控制理论," />
新型调谐黏滞质量阻尼器对斜拉桥的减震控制分析" />
新型调谐黏滞质量阻尼器对斜拉桥的减震控制分析" />
调谐黏滞质量阻尼器, 斜拉桥, 控制模型, H2控制理论,"/>
Seismic control analysis of cable-stayed bridge based on tuned viscous mass damper
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TVMD, cable-stayed bridge, control model, H2 control theory,"/>
摘要果以一种新型的调谐黏滞质量阻尼器(Tuned viscous mass damper, TVMD)作为控制装置,实现了对斜拉桥的控制模型建立及减震控制分析,探讨了TVMD装置减震的适用性和有效性。基于TVMD装置的工作原理和力学模型,建立了多自由度空间结构多TVMD控制装置在地震激励下的状态空间控制模型和传递函数模型|基于H2控制理论,以结构控制目标响应传递函数的H2范数作为优化目标,提出了利用分步参数扫描进行多TVMD控制装置参数优化设计的方法|以南京长江三桥作为控制对象,针对其在纵桥向地震激励下的振动,分别以TVMD、调谐质量阻尼器(TMD)和黏滞阻尼器(VD)作为控制装置,进行了控制方案的设计与效果的对比分析,对比分析结果表明,TVMD减震控制装置具有更为显著的减震效及更优的耗能效应。
Seismic vibration control of cable-stayed bridge with a novel device named Tuned viscous mass damper (TVMD) is investigated. Meanwhile a control model is proposed and the control effect is discussed in detail. According to the seismic dissipation mechanism and the mechanical model of the device, the state space model and transfer function model of a multidimensional spatial structure installed with multiple TVMDs are established with a proposed general method. Then, taking the H2 index of structural control target response as the optimal object, the parameter scanning method is proposed to carry out the optimal design of the device based on the H2 control theory. Finally, the 3rd Nanjing Yangtze River Bridge is set as a case to investigate the control effectiveness of the device installation. The longitudinal vibration under the seismic excitation is considered, and three control schemes, established with TVMD, tuned mass damper and viscous damper, are designed respectively to evaluate their control effects. The results reveal that TVMD is more significant in the damping effect and energy dissipation.