上海地区台风的特性及其对电视塔的影响  

THE CHARACTERISTICS OF TYPHOON IN SHANGHAI AREA AND ITS lNFLUENCE ON THE TV TOWER

作　　者：范存新[1] 杨建中[2] 洪善桃[2] 

机构地区：[1]苏州城建环保学院基础部 [2]同济大学

出　　处：《苏州城建环保学院学报》1997年第1期14-20,共7页Journal of Suzhou Institute of Urban Construction and Environmental Protection

摘　　要：上海位于台风经常袭击的东海岸线上。由于台风风速高于其它季节大风，且风荷载是高耸结构的主要设计荷载之一，故研究台风的特性有重要的意义。文章根据上海地区台风的实测资料，提出了沿高度变化的风速功率谱密度，并应用随机振动理论，计算了上海电视塔在台风作用下的风致响应，取得了与实测值较为符合的结果。Shanghai lies on the east coast of China, which is often attacked by typhoon during summer and autumn. The speed of typhoon is higher than other seasonal gusty winds. The wind load is one of the main design loads for tall buildings. Therefore. a study on the characteristics of typhoon is of importance. In this paper, the power spectral density of the wind speed which varies with height is given according to the field measurement of typhoon in Shanghai area. And also the windexcited response of the Shanghai TV tower to typhoon is calculated, based on the theory of random vibration. The result is quite agreeable with the actually measured value.

关 键 词：台风 风速功率谱密度 电视塔 结构动力学 

分 类 号：TU311.3[建筑科学—结构工程]