受损发电机基座框架的动力承载能力分析

The dynamic load-bearing capacity analysis of the damaged foundation frame of a dynamotor

对某受损伤发电机基座框架进行可靠性分析,现场检测混凝土强度,利用有限元法对该结构进行动态特性、结构位移和内力计算和分析。在有限元计算中,采用弱化受损单元抗弯刚度的方法,考虑损伤的影响。分析结果表明基座框架能够承受改造后的设计荷载,振动线位移也满足规范要求。

In this paper the dynamic load-carrying capacity of the damaged foundation frame of a dynamotor is studied. The strength of the concrete is tested. The dynamic displacement and internal force are calculated by using the finite element method. In the finite element analysis the effect of damage on the foundation frame is considered by weakening bending stiffness of damaged element. The results show that the damaged foundation frame may bear the design load after repaired well, and the vibration displacements are satisfied with the standard as well.