摘要
简要论述了振动模态分析方法,并指出有限元分析模型在结构整体监测中的重要性。根据芜湖长江大桥连续板桁结合梁的结构特点,建立了桥梁的三维空间有限元分析模型,然后采用ANSYS有限元分析程序对大桥的动力特性进行了分析,获得了连续梁桥的自振频率和振型;并与实测结果进行了对比。
In this paper, the vibration model analysis is briefly introduced and the importance of finite element model(FEM) in the whole monitoring of structures is stressed. In the light of the structural features of bridges,a 3-D FEM of the bridge is established. The dynamic behavior of the bridge is analyzed with finite element program ANSYS, and the free vibration frequencies and modes of the bridge are thus obtained. Compared with the site-measured results, the finite element model described in the paper is proved to be quite reliable.
出处
《国防交通工程与技术》
2005年第1期17-20,共4页
Traffic Engineering and Technology for National Defence
