摘要
Abstract
In order to improve the accuracy of the results of dynamic analysis , dynamic response analysis should be performed multiple times and get statistical results .In the engineering background of a tower consis-ted of steel tubes and angel steels , the finite element model of transmission towers is set up .Kaimal spectrum is used for numerical simulation of wind velocity time history .With 90°direction angle under different sample length and different sample number , the wind dynamic response is analyzed .the statistical results show that the result of sample is not accurate , when the sample length is 600 s, the sample number is 10, the result er-ror is no more than 3%, which can meet the statistics size and accuracy of the results .The statistics results of displacement are greater than results of average wind from 33% to 47%, are greater than results of standard wind load form 9%to 20%;The statistics results of axial force are greater than results of average wind from 58%to 85%, are greater than results of standard wind load from 33% to 56%.So statistical analysis of dy-namic response of the transmission tower structure should be porformed in order to obtain more accurate re -sults.关键词
输电线路/钢管组合塔/风荷载/动力响应/统计分析Key words
transmission lines/combo steel tube tower/wind loads/dynamic response/statistical analysis
