基于 EIMD 的桥梁半主动控制与地震自复位性能研究

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中图分类号：U441 文献标识码：A

Abstract： To verify the feasibility of applying the Electromagnetic Inertia Mass Damper （EIMD） to the semi-active control of bridge structures， an experimental study was conducted to verify the accuracy of its mechanical model and the sensitivity of its parameters. A new control algorithm was proposed and an EIMD-continuous girder bridge control system was designed. Taking an actual engineering continuous girder bridge as the object， the control effect of the relative displacement of the bridge structure's piers and girders under earthquake action was evaluated through numerical simulation methods， and the research on the self-resetting performance of the bridge structure was carried out. The results show that compared with the traditional passive control methods， the absolute value of the relative displacement of the bridge structure's piers and girders is significantly reduced， which shows excellent shock absorption effect. The proposed new control algorithm has a significant improvement effect on the self-resetting function of the bridge structure.

Key words： electromagnetic inertial mass damper; new control method; self-resetting performance; semi-active control

桥梁减隔震技术的出现为桥梁结构抗震设计提供了新思路， 被认为是最有吸引力的抗震策略[1]。（剩余7290字）