薄壁开孔圆钢管轴压稳定分析

Axial compression stability analysis of thin-walled tubular with hole

钢管混凝土构件置换混凝土,往往需要在管壁上开孔,以清除达不到设计承载力的混凝土,并为重新浇筑混凝土提供通道。首先通过与已有试验结果对比,以确保有限元分析结果的正确性。通过对薄壁开孔圆钢管的稳定分析,得出了管壁开孔对圆钢管稳定有很大影响等结论,为以后钢管混凝土加固工程提供理论依据。

The engineering of replacement concrete reinforcement to concrete-filled steel tubular,often need to make a hole in the wall to clear the substandard concrete and re-pouring concrete. The results of tests and finite element analysis are contrasted to ensure the correctness of the finite element analysis. By stability analysis to the circle steel thin-walled with hole,the paper gives the conclusion of wall openings a great influence on the stability of circular steel tubes,and provides a theoretical basis for future steel pipe concrete replacement project.