Design and analysis of assembled super high-rise steel-concrete composite structure
In order to test the rationality of the new assembled super high-rise steel-concrete composite structure system,the seismic performance and wind resistance comfort of a proposed residential building were investigated.Firstly,the elastic and elastic-plastic time-history analysis of the residential structure was carried out by YJK and ETABS to investigate the mechanical performance of the structure under earthquake,and the working mechanism of energy-consuming concrete-filled steel tube composite buckling restrained brace and viscous damper in earthquake resistance.Then the MATLAB program was compiled with AR method to obtain the time history of fluctuating wind speed and fluctuating wind pressure at each floor,analyze and evaluate the comfort of the structure,analyze the working mechanism of the two dampers in wind resistance,and study the influence of viscous damper parameters on comfort.The results show that adding viscous dampers in the structural system can significantly improve the wind comfort and energy dissipation capacity of the structural system under frequent earthquakes.Adding energy-consuming concrete-filled steel tube composite buckling restrained braces can improve the lateral stiffness and energy dissipation capacity of the structural system under rare earthquakes,the design of the assembled super high-rise steel-concrete composite structural system is reasonable;increasing the damping coefficient of viscous damper or reducing the velocity index of viscous damper can improve the wind comfort of the residential structure.In structural design,two kinds of dampers shall be preferentially arranged in the middle and lower floors and 41～50 floors of the structure.
super high-rise buildingassembled buildingsteel-concrete composite residencewind resistance comfortseismic performance
万方数据
维普
