HUO Linsheng,ZHANG Yuwan,HUANG Chen,et al.Research on Vibration Control of Large⁃span Spatial Structures with a Passive Adaptive Suspended Mass Pendulum[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(05):968-976.
HUO Linsheng,ZHANG Yuwan,HUANG Chen,et al.Research on Vibration Control of Large⁃span Spatial Structures with a Passive Adaptive Suspended Mass Pendulum[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(05):968-976. DOI: 10.13409/j.cnki.jdpme.201904016.
Research on Vibration Control of Large⁃span Spatial Structures with a Passive Adaptive Suspended Mass Pendulum
In this paper, a passive adaptive suspended pendulum (ASMP) based on curved support is proposed to reduce the seismic response of the large-span spatial structures. Firstly, the mathematical equations for the curved support are derived, which can keep the period of the suspended mass pendulum constant at a large angle of swing. Based on the principle of Lagrange equations, the motion equation of the coupling system of ASMP and long-span spatial structures is established. The shortcomings that the suspended mass pendulum can only control the horizontal vibration of the structure are overcome so that the horizontal and vertical dynamic response of the large-span space structure can be simultaneously controlled. Furthermore, to verify the vibration control effectiveness of the ASMP, a reticulated shell structure was investigated under different horizontal and vertical seismic records. The results reveal that the ASMP has a significant mitigation effect on the peak and average values of the horizontal and vertical seismic response of the structure and the vibration reduction rate can reach up to 65%, which is obviously better than normal suspended mass pendulums.
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