摘要
在TJ-1风洞中采用高频动态天平技术对两个形状相同的方形截面高层建筑模型间的横风向动力干扰效应进行了风洞实验研究。同时,对主模型采用气动弹性模型,在相同的配置下进行了实验。两种实验方法所得的结果比较一致。最后应用人工神经网络方法对试验结果进行了模拟和推广,给出了横风向动力干扰因子的等值线图,可供规范参考。
Two tall building models with square cross-sections were experimentally studied in TJ-1 Boundary Layer Wind Tunnel with high-frequency-force-balance technique to investigate the interference effects on across-wind dynamic response. Another wind tunnel test on two building models, which had the same square cross-sections but the principal model is aeroelastic was also carried out to further study the interference effects, which verified the results from the high-frequency-force-balance test. The influence of turbulence intensity of flow field on across-wind dynamic interference effects is analysed. The artificial neural networks method is used to process the experimental data and the across-wind dynamic interference factor (IFdy) contour map is obtained, which may be used as reference for wind load codes.
出处
《工程力学》
EI
CSCD
北大核心
2003年第5期53-58,81,共7页
Engineering Mechanics
基金
国家自然科学基金重大项目(59895410)
教育部博士点专项基金及教育部"高等学校骨干教师资助计划"资助
关键词
高层建筑
动力干扰效应
横向风荷载
动态测力天平
气动弹性模型
Boundary layers
Dynamic response
Loads (forces)
Models
Neural networks
Turbulence
Wind stress
Wind tunnels
