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顏桂云  孫炳楠    （浙江大學(xué)建筑工程學(xué)院  杭州 310027） 

王澤軍  牛荻濤   （西安建筑科技大學(xué)土木工程學(xué)院 710055）

 

[提要]  采用外加電流對(duì)混凝土壓彎構(gòu)件中的鋼筋進(jìn)行了快速銹蝕，通過對(duì)銹蝕鋼筋混凝土壓彎構(gòu)件抗震性能的試驗(yàn)研究，詳細(xì)討論了鋼筋銹蝕程度對(duì)混凝土壓彎構(gòu)件的初始剛度、延性、承載力降低性能、耗能能力等的影響；從理論上探討了鋼筋銹蝕對(duì)構(gòu)件抗剪承載力的影響，提出了銹蝕鋼筋混凝土壓彎構(gòu)件的抗剪承載力計(jì)算表達(dá)式，建議公式的計(jì)算值與試驗(yàn)結(jié)果吻合較好。
[關(guān)鍵詞]  鋼筋銹蝕  混凝土  壓彎構(gòu)件抗震性能  抗剪承載力

This paper carries out accelerated corrosion tests for reinforcing steels embedded in concrete by electrochemical method. Reinforced concrete members with bending and compression loads are experimented and analyzed for its seismic characteristics. Through experiments, the influences of reinforcement corrosion on the initial stiffness, ductility, descent of bearing capacity and energy dissipation of the members are discussed.The influences of reinforcement corrosion on the shear capacity are analyzed theoretically,and calculating formula for the shear strength is proposed. Calcu-lating results by the proposed formulas have good agreement with the experiment results.
Keywords: reinforcement corrosion; RC members; bending-compression loads; seismic behavior; shear strength