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（中鐵第五勘察設(shè)計(jì)院集團(tuán)有限公司，北京 102600）

[摘要]鋼管混凝土構(gòu)件置換混凝土，往往需要在管壁上開孔，以清除達(dá)不到設(shè)計(jì)承載力的混凝土，并為重新澆筑混凝土提供通道。首先通過與已有試驗(yàn)結(jié)果對(duì)比，以確保有限元分析結(jié)果的正確性。通過對(duì)薄壁開孔圓鋼管的穩(wěn)定分析，得出了管壁開孔對(duì)圓鋼管穩(wěn)定有很大影響等結(jié)論，為以后鋼管混凝土加固工程提供理論依據(jù)。

[關(guān)鍵詞]薄壁構(gòu)件;開孔;穩(wěn)定分析;初始缺陷

中圖分類號(hào)：TU398⁺.7      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：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