Analysis on semi-active vibration control of large-span cable dome structures
To realize the semi-active vibration control of large-span spatial structures,a semi-active vibration control method based on fuzzy control algorithm was proposed.A large-span cable dome roof of a gymnasium was taken as the analysis object,and a selection set of the ground motion records based on station and seismic information was established.Passive control investigation of the cable dome structure was conducted using a new piezoelectric friction damper(PFD).The semi-active vibration control study of the cable dome structure was conducted by taking two indexes,the ground acceleration and the structural deformation,as the control parameters.The results show that the average minimum vibration reduction rates of the peak acceleration and the peak relative deformation of the structure under passive control at different ground motion intensities are 3.7％and-1.6％,respectively.The PFD under the semi-active control can adapt to different intensities of ground vibration,and can effectively reduce the peak acceleration and the peak displacement of the structure.The average peak acceleration vibration reduction rates are 20.0％to 41.9％,and the average peak relative deformation vibration reduction rates are 12.0％to 19.0％.
piezoelectric friction dampercable domesemi-active controlseismic responsefuzzy control
万方数据
维普
