斜拉桥结构基于模态分析的减震控制研究

详细信息

CONTROL OF SEISMIC RESPONSE FOR CABLE-STAYED BRIDGE BASED ON MODAL ANALYSIS

Bridge Department of Tongji University, Shanghai 200092;2. Northern Jiaotong University, Beijing, 100044

摘要: 本文提出基于模态分析的线性二次最优减震控制算法和基于模态分析的滑动状态减震控制算法,并将这两种算法应用于斜拉桥结构的减震控制中。通过仿真控制研究表明这两种算法对大跨度斜拉桥结构的减震控制是可行的有效的。但就本文算例而言,基于模态分析的滑动状态减震控制比线性二次最优控制用较少的外部能量就可达到较好的控制效果。
- 斜拉桥 /
- 模态分析 /
- 最优控制 /
- 滑动状态 /
- 减震控制
Abstract: Based on modal analysis, two algorithms to implement the Linear Quadratic Regulator (LQRapproach and sliding mode control are presented. They are used to mitigate the seismic response of cable-stayed bridges. It is shown that the two algorithms are feasible and effective in the context of long-span bridges. Inaddition, the sliding mode control can achieve better control result than the LQR for less requirement of external energy.
- cable-stayed bridge /
- modal analysis /
- LQR /
- sliding mode /
- active control