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（同濟大學土木工程防災國家重點實驗室 上海 200092）
【提要】 對上海鐵路南站結構模型進行了風洞試驗，分析了該結構屋蓋表面平均及脈動風壓的分布規(guī)律，對比了兩者的異同并指出造成這種差別的原因，比較了這一大跨度屋蓋結構在無周邊建筑和有周邊建筑情況下屋面的風壓分布特性。將極值風壓系數與平均風壓系數進行了比較，最后分析了屋蓋表面測點風壓自功率譜及互功率譜的特性。
【關鍵詞】 大跨度屋蓋結構 平均風壓 脈動風壓 功率譜
Testing Study on Wind Pressure Behaviors of Shanghai South Railway Station Roof/Zhou Xuanyi，Huang Peng，Gu Ming（State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China）
Abstract:Based on the windtunnel test results of Shanghai south railway station roof, comparisons between the contours of mean and fluctuating wind pressure coefficient are made,and the reason that causes the difference is given. At the same time,the behavior of wind pressure on the roof of the structure with and without considering the effects of surrounding buildings is tested. Then the probability distribution of the ratio of peak pressure coefficient to mean pressure coefficient is calculated. At last,the characteristics of wind pressure power spectrum are analyzed.
Keywords:largespan roof structure; mean wind pressure; fluctuating wind pressure; power spectrum