The Investigation Of The High-rise Structure Seismic Control By The Tuned Liquid Damper

Structure vibration control has opened a new way for suppressing the vibration of engineering structures under seismic and wind. Tuned liquid damper, as a passive control device, has its advantage of low cost, high reliability and so on.Therefore, it was applied widely in wind vibration control of towering and high-rise structure. And it has achieved good control results.But the damage of the earthquake for high-rise structure is larger than wind. The technique of high-rise structure seismic vibration control by TLD is not perfect now. In this thesis, the effect of TLD applied in high-rise structure seismic control will be reaserched, and it has analyzed the factors which affect the effect on seismic control of high-rise structure by TLD. The main contents are as follows.In the preface, the vibration problem of high-rise structure and the research on the structure vibration control are summarized systematically, introducing mainly the research on TLD.The contents and methods in this thesis are set forth, on the basis of understanding the current situation of dependent research fields.In the chapter 2, the calculation method on the interaction of TLD and the structure is researched. Based on the shallow-water wave theory and the state-space mathematic model in contemporary control theory, a new calculation method is proposed. This method can get the response of the structure directly which was applied by TLD.It can simplify the calculation procedure.The chapter 3 mainly calculates and analyzes the factors which affect the effect on seismic control of high-rise structure applied by TLD.For a certain structure, there have two sorts of factors which affect the effect of control. One is different parameters of TLD; the liquid mass ratio and the frequency of TLD have been discussed. Another is different frequencies of input loading.In the chapter 4, taking an actual high-rise structure for example, the passive control device of TLD is used for vibration control design of structures subjected to earthquake. This will give some reference for anti-seismic design of high-rise structure.In the conclusion and prospect, the main achievements of this thesis are summed up and the unsolved problems are mentioned.