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    劉  磊，  牛荻濤，  李  強(qiáng)
    （西安建筑科技大學(xué)土木工程學(xué)院，西安710055）

[摘要] 制作了5個(gè)150mm x150mm×450mm的鋼筋混凝土棱柱體試件，采用外加直流電的方式對其中4個(gè)試件內(nèi)的箍筋進(jìn)行了快速銹蝕，并對試件進(jìn)行了軸心受壓試驗(yàn)研究。通過試驗(yàn)測得了銹蝕箍筋約束混凝土的應(yīng)力-應(yīng)變曲線，分析了箍筋銹蝕量對約束混凝土應(yīng)力-應(yīng)變曲線的影響，并分析了箍筋銹蝕對約束混凝土試件的承載力和延性的影響。
[關(guān)鍵詞] 銹蝕箍筋；約束混凝土；應(yīng)力-應(yīng)變曲線；強(qiáng)度；延性
中圖分類號：TU375.3    文獻(xiàn)標(biāo)識碼：A  文章編號：1002-848X(2011) S2-0159-03

    Experimental study on axial compressive performance of corroded stirrups confined columns
    Liu Lei, Niu Ditao, Li Qiang
    ( College of Civil Engineering,  Xi' an University of Architecture and Technology,  Xi' an 710055,  China)

Abstract: One group of 5 steel reinforced concrete prisms specimens with dimensions of 150mmX150mm×450mm were produced. Stirrups of 4 specimens were subjected to an accelerated galvanic corrosion process and all of these specimens were tested under uniaxial compressive loading. Based on the experimental study, stress-strain curves of concrete confmed by corroded stirrups were measured. Besides, the influence of stirrup corrosion rate on stress-strain curve, strength and ductility were analyzed.
Keywords: corroded stinups; confmed concrete; stress-strain curve; strength; ductility