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基于虚拟激励法,利用风洞试验所得体形系数,通过对ANSYS有限元软件包二次开发,对于家堡火车站站房单层贝壳型网壳进行频域的风振响应分析,得到结构在0°风向角下的位移风振系数,并与时域分析结果进行对比,两者吻合较好.同时研究了结构风振系数随风荷载频率上限的变化关系,为进一步深入研究结构风振响应分析方法奠定基础,所得结果为实际工程等效风荷载的确定提供有效指导.
Based on the virtual excitation method and the shape factor of wind tunnel test, the wind-induced vibration response of single-layer shell-shell reticulated shell of railway station in Jiabao was analyzed by the secondary development of ANSYS finite element software package. ° wind direction, and compared with the time domain analysis results, the two agree well with each other.At the same time, the relationship between the wind-induced vibration coefficient and the upper limit of the wind load frequency is studied. In order to further study the wind-induced vibration response of the structure, The results provide the effective guidance for the determination of the equivalent wind load of the actual project.