摘要
基于台风'达维'登陆时广州中信广场风场及结构响应的现场实测数据,对于风场特性和结构加速度响应状况进行了计算分析,计算分析结果表明,城市上空强风'达维'的湍流度比较大,在台风'达维'作用下结构的横风向响应与顺风向响应接近;同时在不同的时距条件下对风场特性与结构加速度响应的相关性进行了分析,由分析可知取3min为基本时距时风速与结构响应的相关性系数值较高,说明在确定结构的风荷载和计算结构风致响应时取基本时距为3min更为合理。
This paper presented the analysis results based on the field measurement data of wind velocity and acceleration of main tower in CITIC Plaza during Typhoon Damrey. The results revealed that turbulence intensity of Typhoon Damrey was larger than the normal, and the across-wind dynamic response of CITIC Plaza approached the along-wind dynamic response under Typhoon Damrey. Meanwhile, the correlation of wind characteristic and wind-induced structure vibrations was investigated in selected different time intervals. The research indicated that 3-minute mean wind speed was reasonable in calculating the wind load and the wind-in- duced response.
出处
《实验流体力学》
EI
CAS
CSCD
北大核心
2009年第4期21-27,共7页
Journal of Experiments in Fluid Mechanics
基金
国家自然科学基金资助(50578061
50778072
90815030)
关键词
风场特性
风致响应
现场实测
相关性
基本时距
wind field characteristic
wind-induced response
field measurement
correlation
time interval
