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近年来,围绕大跨度空间结构的风场特性研究、风振研究逐渐成为土木工程学科的热点研究方向,虽然获得了不少成果,但大多是建立在数值模拟分析基础上,少量学者进行了风洞试验研究。虽然风洞试验可以方便地模拟不同工况条件下的风环境和结构风振响应,但在真实建筑与模型相似比问题上又会使试验结果与真实数据之间存在一定误差。鉴于此,通过实测手段采集到了大跨度空间结构屋盖上方的风速、风向和风压数据,并基于实测数据,对其风荷载的风速、风向、湍流强度、积分尺度、脉动风压、风压相关性等指标进行了细致分析,分析结果真实可靠地说明了其屋盖上方的风场特征,对于大跨度空间结构的风振研究具有十分重要的意义。
In recent years, wind-induced vibration research has gradually become a hot research topic in the field of civil engineering around the research on wind field characteristics of long-span space structures. Although many achievements have been obtained, most of them are based on numerical simulation analysis. Experimental Research on Caves Although the wind tunnel test can simulate the wind environment and wind-induced vibration response under different working conditions conveniently, there is a certain error between the experimental results and the real data on the similarity ratio between the real building and the model. Based on the measured data, the wind speed, wind direction, turbulence intensity, integral scale, fluctuating wind pressure and wind pressure of the wind load are obtained based on the measured data And other indicators were analyzed in detail. The results of the analysis give a true and reliable description of the wind field characteristics above the roof, which is of great significance for wind-induced vibration research of long-span space structures.