大型轨道梁的承载能力分析

Bearing Capacity Analysis of the Large Rail Girder

在整体模型分析的基础上,应用有限元分析软件的子模型方法,对结构尺寸较大的轨道梁进行了结构静力分析,此方法节省了计算机时间,解决了在比较有限的计算机资源情况下求解超大规模的问题,并保证了计算结果的精度。运用经验公式对应力集中的焊缝周围进行疲劳分析,提出相关措施。

The sub-model method of finite element analytical software is based on the whole model analytsis. This method can save computation time especially in structure statics analysis of the rail girder with larger structure size. The problems about a super and large-scope are solved under the limited calculatoral resources. The caculating precision is assuranced. The fatigue analysis about the welded seam region where stress is concentrated is discussed by a experience formula and the related measure is put forward.