The Research On Wind Vibration Control Based On Ring MR-TMD

With the advance of science and the development of society, more and more tallbuilding appeared, and the tendency of build's development is toward the direction ofhigh strength and light mass. The stiffness and damping of structures are decliningoThe effect of the wind to the structures which is the main load to the tall buildings isaggravatingo Through the way of control of wind-induced vibration, the wind-inducedresponse of structures is reduced effectively, the reliability is improved and comfortrequirement is satisfied, o Wind-induced damage is reduced~ The research of windvibration control in the super-high-rise tube-in-tube structure is given with thebackground of the building named international trade mansionoA equivalent MDOF model is establishing under the support of computer whichhas given the three- dimensional finite element modelo Comparison of the dynamicplastic response between the equivalent MDOF model and finite element modelshowed that the equivalent MDOF model is efficacious. The research of dynamicresponse in the structure under the artificial wind load is done. The parameters ofTMD wind vibration control has been optimized after the learning of theory of TMDvibration controlo The simulation analysis of TMD passive control gives a group ofoptimal parameters after comparing the error of the optimal design parametersbetween the computer iteration value and value of the empirical formulao The outputforce equation of MR damper can be learned after researching the MechanicalProperties of MR damper. The MR damper is installed between the TMD and mainstructure. The parameters of MR damper are designed according to MR dampersequation and the actual conditions~ Semi-active control algorithms based on the LQRcontrol algorithms and fuzzy control algorithm is given. The simulation analysis ofdynamic response is done.The follow conclusion can be learned through the research:(1) It is an effective method for reducing the main structure displacement throughthe wind vibration control.(2) It is a necessary, as well as a possible measure for change TMD shortcomings toinstall the MR damper because the TMD control has clear limitations, subject togreater restrictions on the frequency, wind vibration controlo(3) MR-TMD more to reduce the structural dynamic response can play bettercontrol, but MR damper output restrictions MR damper control because it cannot be completely simulated LQR control force, Therefore MR damper controlhas its limitations.