摘要
基于地震荷载的作用,应用大型有限元软件FINAL,研究不同结构参数的风力发电塔在地震荷载作用下的地震响应,以及比较它们之间的差异,进而得出改变风力发电塔的结构参数对于地震响应的影响规律。以二维风力发电塔模型为例,建立4个不同参数的模型,首先进行模态分析,计算出每个模型的固有频率,通过比较固有频率得出结论,并对其进行比较分析。然后对4个模型施加1993年北海道西南海面桥地震波形,分析比较它们在此地震波形作用下的地震响应值,进而得出不同的结构参数对地震响应的影响规律。
A FEM software FINAL is used to study the seismic response of wind power generation tower which has different structural parameters and compare the differences between them. And then we can get the rule of seismic response through changing the structure parameters of wind power generation tower. Building 4 models which have different structural parameters and they are two-dimensional models. We can get the natural frequency of every model through the modal analysis of wind power generation tower which has different structural parameters and we can get the rule through the comparison of natural frequency. Applying the seismic wave of Hokkaido southwest sea bridge in 1993 to the models. And then we can get the rule through analyzing and comparing the seismic response of the 4 models.
出处
《四川建筑科学研究》
2014年第1期221-224,共4页
Sichuan Building Science
关键词
地震荷载
风力发电塔
地震响应
模态分析
seismic load
wind power generation tower
seismic response
modal analysis
