Research On Wind Vibration Control Of High-Rise Heterotype Structure With A Top Swimming Pool

With the development of society,more high-rise buildings emerge in cities,people begin to pay more attention to the beauty of the buildings,the constructions are development to multi-functional and special-shaped.Some of these buildings exceed the current national code,many have matters such as irregular shape,sudden change of stiffness and large eccentricity,which put forward a lot of problems for structure design.Compared with the traditional structural design method,the structural control method has great advantages in economy and applicability.Therefore,it is very meaningful to research the structural control of this kind of building.In this paper,a hotel in Guangdong Province is studied for the research of structural vibration control.The hotel adopts frame shear wall system,have some problems such as irregular elevation and abrupt change of stiffness;the torsion effect is obvious due to eccentricity.In addition,a swimming pool is arranged on the top of the structure.In this paper,the vibration control of the hotel is studied,and the theory of water body vibration is researched.This paper introduces the wind tunnel test,and obtains the fluctuating wind pressure coefficient based on the rigid test.The wind-induced vibration response of the structure is analyzed based on the finite element analysis software.To reduce the translational and torsional response of the structure under the wind load,and improve the structure of comfort,combination control of the swimming pool and the viscous fluid torsional cylinder is enabled.Through analysis and calculation,the following conclusions are obtained:(1)The placement of TLD has an effect on the control effect.Place TLD in high position of the structures can lead to better control effect.(2)Analysis of the wind test data shows that:due to irregular sectionplane and stiffness difference,crosswind response of the structure can not be ignored;The aeroelastic model test results show that the structural response under different wind angles is quite different.(3)270 degree wind angle is the most unfavorable wind angle.Amplitude and acceleration response of the most unfavorable wind angle beyond the comfort limits,which should be controlled.The structure has a sudden change of stiffness in the sixth layer,after the time history analysis,it is shown that the torsion angle on this layer is too large,so it is necessary to control the wind-induced torsion.(4)After setting the swimming pool at the top of the structure,the displacement response decreased.After control,the top layer acceleration amplitude of the structure is within the limits of the norm.However,the torsional response of the structure is almost unchanged,which indicates that the control effect of the swimming pool on the torsional response is not enough.(5)The torsional response of the structure is reduced under the control of viscous fluid torsional tube,The torsion angle on the sixth layer is greatly reduced.In general,the torsion control effect of the viscous fluid torsional cylinder is remarkable.Under the combination control,both of the translational and torsional responses of the structure are well controlled.