The spatial correlation function describes the correlation between fluctuating wind loads at two points in the frequency domain.Both domestic and international scholars have proposed various spatial correla-tion functions based on measured data.The Shiotani correlation function,adopted in Chinese specifications for wind load analysis and calculation,does not consider the influence of height.While practical for general trans-mission towers with low heights,it may underestimate the wind vibration coefficient for long-span towers.This paper analyzes and calculates towers of different heights using various correlation functions.The results show that,with increasing height,the wind vibration coefficient calculated by the Shiotani function is 3％to 11％lower in the tower head section and about 3％to 5.5％lower for the entire tower compared to correlation func-tions that consider height.Therefore,when designing long-span towers,it is recommended to appropriately ac-count for the influence of height on the spatial correlation coefficient.
维普
万方数据
