摘要
以某火车站站台雨篷为工程背景,通过风洞试验对雨篷的平均风荷载规律进行了分析,讨论了典型风向角下雨篷上下表面风压相关性,以及表面风压和均方根风压的分布特点,同时采用频域分析法对雨篷进行风振响应分析,通过是否考虑振型交叉项及荷载谱交叉项,分别计算出均方根位移和内力响应,分析了结构的振型交叉项及荷载谱交叉项对风振响应的贡献。
Based on the canopy of a railway station, it is analyzed that mean and fluctuating wind pressure distribution of canopy, correlation coefficient of wind pressure between the top and bottom surfaces of canopy, and wind-induced response of canopy in frequency-domain. The RSM displacement and RSM internal force can be both figured out in the contributing modes, by considering whether the effect of coupling of modes and wind load spectrum should be taken in account. Results show that responses are influenced by coupling of modes and wind load spectrum.
出处
《固体力学学报》
CAS
CSCD
北大核心
2008年第S1期162-166,共5页
Chinese Journal of Solid Mechanics
关键词
站台雨篷
风洞试验
平均风压
风振响应
振型交叉
荷载谱交叉
platform canopy, wind tunnel test, mean wind pressure, wind-induce response, coupling of modes, coupling wind load spectrum
