The Dynamic Characteristics And Wind Vibration Response Of The Super High-rise Twin-tower Construction

The modeling of modern buildings is more and more peculiar and complex,while the two-tower conjoined structure,as a complex new high-rise structure form,is more and more widely used because of its beautiful and chic shape and the ability to solve the problem of personnel flow between the high-rise buildings.Because of the existence of conjoined,the dynamic characteristics of two-tower conjoined buildings are complex.The small distance between the two towers and the conjoined structure lead to the complex aerodynamic interference effect between the towers of the conjoined structure.At the same time,the existence of conjoined bodies will lead to complex and changeable wind-induced response of the whole structure.It is of great theoretical significance and practical value to study this kind of structure more deeply and systematically.The main research work of this paper is as follows:Analysis of dynamic characteristics of super high-rise twin-tower buildings.Varieties of finite element models were used for modeling and dynamic characteristics analysis.Meanwhile,MATLAB was used for programming calculation of dynamic characteristics,and the results were compared with the finite element results to obtain the available MATLAB dynamic characteristics analysis program.On the basis of this procedure,change the length,height and stiffness of the conjoined body to obtain the variation of dynamic characteristics under different parameters,and study the influence law of different conjoined body parameters on the dynamic characteristics of the structure.Study on the effect of wind load on super-high-rise twin-tower buildings.The ETABS results of wind vibration response are obtained through the loading time of information flow of e2k.Meanwhile,MATLAB programming is used to calculate the wind vibration response and compare it with the finite element results to verify the feasibility of MATLAB computing wind vibration response.On the basis of this program,the stiffness,height and length of the conjoined body are changed,and the peak displacement and peak acceleration of the structural vertices are analyzed,as well as the relative displacement between towers at the height of the conjoined body.Wind tunnel test was conducted to study the interference effect between ultra-high-rise twin towers.MATLAB and finite element software were used to study the dynamic characteristics and wind-induced vibration response of the ultra-high-rise twin towers.Finally,the influence law of the parameters of the twin towers was analyzed,and some Suggestions were put forward for the structural design of the twin towers.