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，
1. Western Engineering Research Center of Disaster Mitigation in Civil Engineering， Lanzhou Univ. of Tech.， Lanzhou 730050，China；
2. Institute of Earthquake Protection and Disaster Mitigation，Lanzhou Univ. of Tech.，Lanzhou 730050，China
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.
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. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(10): 6-11.
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