水平双向地震激励下基于序列最优控制算法曲线梁桥控制分析

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (10) : 6-11.

论文

1．兰州理工大学西部土木工程防灾减灾教育部工程研究中心，兰州 730050；#br# 2. .兰州理工大学防震减灾研究所，兰州 730050

作者信息 +

The curved girder bridge control based on sequential optimal control with two-directional horizontal earthquake

1. Western Engineering Research Center of Disaster Mitigation in Civil Engineering， Lanzhou Univ. of Tech.， Lanzhou　730050，China；#br# 2. Institute of Earthquake Protection and Disaster Mitigation，Lanzhou Univ. of Tech.，Lanzhou　730050，

Author information +

文章历史 +

摘要

针对曲线梁桥在地震作用下出现的平扭耦合作用对结构产生的不利影响，将隔震技术与附加减震装置相结合对平扭耦合进行控制。建立考虑上部结构偏心的曲线梁桥在双向水平地震作用下的振动控制方程，分别采用序列最优控制算法（Sequential Optimal Control,SOC）及经典线性最优控制（Classical linear Optimal Control,COC）对结构进行分析，求解曲线桥两种控制算法的地震响应，并通过比较研究两种控制算法的适用性。结果表明，序列最优控制算法较经典线性最优控制能更有效减小曲线梁桥在水平双向地震作用下的地震反应、抑制结构扭转耦合效应，对减少落梁震害、确保曲线桥抗震安全有较好的工程实用价值。

Abstract

According to translation torsion coupling phenomenon of the curved girder bridge will cause adverse effects on the structure under earthquake action, the seismic isolation technique and additional damping device is combined to control the translation torsion coupling of curved girder bridges. This paper established the equation of motion considering effect of the curved girder bridge eccentric under two-directional horizontal earthquake, and used sequential optimal control and classical linear optimal control to analysis. The results indicate that the optimal control sequence method can more effectively reduce the seismic response of curved beam bridge under two-directional earthquake action than classical linear optimal control and reduce the effect of torsion. This paper will be practical engineering better value for reduce girder falling earthquake damage to ensure the curved girder bridge seismic safety.

导出引用

李喜梅1,2，杜永峰1,2 . 水平双向地震激励下基于序列最优控制算法曲线梁桥控制分析[J]. 振动与冲击, 2015, 34(10): 6-11

LI Xi-mei1,2，DU Yong-feng1,2. The curved girder bridge control based on sequential optimal control with two-directional horizontal earthquake[J]. Journal of Vibration and Shock, 2015, 34(10): 6-11

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