Coupled Vibration Control of Tuned Mass Damper in Both Horizontal And Torsional Direction

摘要

Traditional tuned mass damper (TMD) can reduce the dynamic response of structure under earthquake, but the traditional tuned mass damper is not effective to reduce translation-torsion coupled vibration. A two-directional horizontal and torsional tuned mass damper, which includes tuned mass blocks, torsional blocks and rotation lever, is proposed. The horizontal and torsional response of the building structure is controlled by the movement and the rotation of the multi-dimensional tuned mass damper (MDTMD) in different directions. According to the movement mechanism of the MDTMD, the dynamic equation for the control system considering eccentric torsion effect is established. An eccentric structure with MDTMD is analyzed to verify the control effctive for the horizontal and torsional coupled system under earthquake, and the reduction effect is compared with the traditional TMD. The results show that the coupled response can be reduced effectively by MDTMD and the vibration reduction ration is much higher than traditional TMD.