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    袁迎曙    李  果
    （中國(guó)礦業(yè)大學(xué)  徐州 221008）

[提要]  在恒定壓應(yīng)力狀態(tài)下，對(duì)鋼筋混凝土柱進(jìn)行了鋼筋加速銹蝕試驗(yàn)。通過試驗(yàn)研究和有限元模擬分析，對(duì)軸壓鋼筋混凝土柱在銹蝕過程中的力學(xué)性能進(jìn)行了動(dòng)態(tài)分析；提出了壓應(yīng)力狀態(tài)下銹蝕過程中柱截面應(yīng)力重分布的特點(diǎn)與發(fā)展階段；并揭示了軸壓鋼筋混凝土柱的結(jié)構(gòu)性能退化特征。
[關(guān)鍵詞]  鋼筋混凝土柱  銹蝕鋼筋  應(yīng)力重分布  結(jié)構(gòu)性能  退化特征

An accelerated corrosion test of steel bars in reinforced concrete columns under constant compression was conducted. Dynamic analyses for structural behavior of the reinforced concrete column during corrosion were carried out using test research and finite element method. Features and development periods of the stress redistribution in the process of rusting are discussed for the column in axial compression. Its deterioration characteristics are presented.
Keywords: reinforced concrete column; corroded bar; stress distribution; structural behavior; deterioration characteristics