Study On Wind Induced Torsion Control Of Super High Rise Building With Drum Shaped Tuned Liquid Column Damper

In the background of Laguna Hotel super high-rise building,the numerical simulation analysis and rigid pressure measurement model and aeroelastic model wind tunnel tests are applied to study the wind-induced vibration response,and the research research mainly focuses on the torsional vibration response.As a consequence of this,the drum shaped tuned liquid column damper(TLCD)is adopted to control the structure wind-induced torsional response.Established the torsion dynamic model of drum shaped TLCD under the wind load and derived the coupling control system composed of the motion equation of the drum shaped TLCD system and single-degree-of-freedom system.When the external load is a harmonic wind load,the influence of the relevant parameters on the torsional vibration control of the structure is analyzed.The fitting function of drum TLCD optimal damping ratio and structural damping ratio is studied when drum shape TLCD coefficient is constant and mass ratio is different.Finally,the AR method is used to simulate the random fluctuating wind load.The typical example is used to verify the torsional vibration reduction effect of the drum shaped TLCD under random fluctuating wind load,and the drum shaped TLCD is installed on the suitable location of the super high-rise structure to study the torsion control effect.The results show that:1)Laguna Hotel is a tall frame with irregular frame,irregular plane,discontinuous floor slab and discontinuous components.2)The ANSYS full scale model and the scale model of the Laguna Hotel can represent the original structure in the structural dynamic characteristics,and can be used to extract the calculated data and to analyze the wind vibration response of the original structure.3)When the wind direction is 270 degrees,the wind response of the top layer is the most obvious under the same wind speed,so the 270 degree wind direction is the most unfavorable wind direction.The sixth and twenty-seventh layers of the structure are the weak stiffness layer,and the sixth layer wind-induced vibration response is especially prominent,which is the most unfavorable floor.4)The wind-induced vibration response of the structure exceeds the limit of the national standard for comfort requirements,and the wind-induced vibration control of the structure should be carried out.5)The reasonable design of the parameters of the drum shaped TLCD and the full use of the frequency modulation system of the drum type TLCD can get a better control effect of the wind induced torsional vibration of the structure.6)The control effect of the drum shaped TLCD on the translation and acceleration of the top floor of the given high-rise building is very good,which makes it meet the requirements of the standard comfort degree.