Radar tower frequency control and seismic response analysis

For the sake of avoiding the impact of surrounding buildings on the radar,radar tower is usually high,generally up to 100 meters.As the radar performance reasons,the required fundamental frequency of radar tower should not be less than 1 Hz.For such a tall building,how to control the frequency of radar tower is an issue worth studying.Through a lot of calculations and analyses,paper reaches a number of laws to increase frequency.In the above structural frequencies adjustment methods,setting leaning bracing and reducing the top mass of the structure are the most obvious effects of all.At the same time,paper also discusses on the seismic response of radar tower.Analyses used for earthquake are response spectrum method,time history analysis method and random vibration analysis.Three methods of calculation results show:radar tower performance meets China's seismic code to regulate specifications of the story drift limits.