（中铁第五勘察设计院集团有限公司，北京 102600）

[摘要]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。

[关键词]薄壁构件;开孔;稳定分析;初始缺陷

中图分类号：TU398⁺.7      文献标识码：A      文章编号：1002-848X(2013)S1-1444-03

Axial compression stability analysis of thin-walled tubular with hole

Zhang Jinrong

(China Railway Fifth Survey and Design Institute Group Co., Ltd., Beijing 102600, China)

Abstract: 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 to ensure the correctness of the finite element analysis. By stability analysis to the circle steel thin-walled with hole, the paper gives to 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.

Keywords: thin-walled member; hole; stability analysis; initial defect