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中文摘要：
基于Reynolds时均N—S方程和RSM模型对平屋面的风压分布进行了数值模拟，在此基础上系统研究了风向角、跨高比、地面粗糙度、风速等因素对屋面风压分布的影响．探讨了结构周围流场的绕流特性，最后根据屋面的结构形式及风压分布特点将屋面进行分区，给出了屋面在不同风向角下的分区风载体型系数以供工程设计参考。
英文摘要：
Based on the Reynolds-averaged N-S equations and Reynolds stress equation model （RSM）, the numerical simulation of wind-induced pressure has been performed on a flat roof. Compared with wind tunnel tests, the computational results are in good agreement with the experimental data. The characteristics of wind pressure distribution and the flow characteristics are studied in considering of some parameters, such as wind direction, span-height ratio, roughness of terrain and wind velocity. At last, the flat roof is divided into twelve ing to the roof shape and the regularity sub-regions whose wind pressure coefficient are provided accordof wind pressure distribution.
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