论文部分内容阅读
对南太湖湿地奥体公园复杂体型体育场双层屋盖结构进行了风荷载的风洞试验与风致动力响应研究。屋盖由高低两个开口椭圆屋面叠合而成,两屋面之间设置观光走廊。利用风洞模型试验测定了双层屋盖上下表面的平均和脉动风压时程数据。通过计算分析得到了屋盖结构局部测点的极值风压以及平均风荷载整体合力与最不利风向角。然后基于有限元方法对该屋盖进行了风振响应的动力时程分析,获得了结构风振系数、等效静力风荷载的分布图以及考虑风振效应的最不利风向等数据和结论。
Wind tunnel test and wind-induced dynamic response of double-deck roof structure of Olympic Sports Complex in Nan Tai Lake wetland are studied. The roof is composed of two open oval roofs stacked together, and the sightseeing corridor is set between the two roofs. Wind tunnel test was used to determine the average and fluctuating wind pressure data of the upper and lower surfaces of the double roof. Through calculation and analysis, the extreme pressure of local measuring point of roof structure, the total resultant of average wind load and the most unfavorable wind direction angle are obtained. Based on the finite element method, the wind-induced dynamic response of the roof was analyzed. The wind-induced vibration coefficient, the distribution of equivalent static wind load and the most unfavorable wind direction considering wind-induced vibration were obtained.