作　　者： ; ; ;

机构地区： 北京工业大学建筑工程学院工程抗震与结构诊治北京市重点实验室

出　　处： 《振动与冲击》 2012年第18期143-147,共5页

摘　　要： 调谐质量阻尼器可以减小地震作用下的结构动力响应,但传统的调谐质量阻尼器在控制结构平移-扭转耦联多维振动方面存在不足。提出由调谐质量块、扭转质量块及扭转杠杆等组成的双向水平及扭转调谐质量阻尼器,利用其自身的平移和转动可以实现对结构水平及扭转振动控制。根据该多维调谐质量阻尼器的运动机理,建立了考虑偏心扭转效应的结构减震体系控制运动方程。以一装有多维调谐质量阻尼器的偏心结构为算例,对结构在地震作用下的扭转耦联减震性能进行研究,并对多维调谐质量阻尼器与传统单向调谐质量阻尼器的减震效果进行了对比分析。结果表明:合理布置的多维调谐质量阻尼器能有效降低结构在水平两向及扭转方向的振动,其减震明显优于传统的单向调谐质量阻尼器。 Tuned mass damper （TMD） can reduce the dynamic response of a structure under earthquake, but the traditional TMD is not effective to reduce translation-torsion coupled vibration of a structure. Here, a two-directional horizontal and torsional TMD including tuned mass blocks, torsional mass blocks and rotation lever was proposed. The horizontal and torsional vibration responses of a structure were controlled by means of the translation and the rotation of a muhi-dimensional tuned mass damper （MDTMD） in different directions. According to the movement mechanism of a MDTMD, the equation of motion for the control system considering eccentric torsion effect was derived. An eccentric structure with MDTMD was analyzed to verify its control performance for the horizontal and torsional coupled vibration system under earthquake, and its vibration reduction effect was compared with that of the traditional TMD. The results showed that the coupled response can be reduced effectively with a MDTMD and the vibration reduction efficiency is much higher than that of the traditional TMD.

关 键 词： 调谐质量阻尼器 平移 扭转耦联振动 偏心结构 结构控制

领　　域： [建筑科学] [建筑科学]