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(1 西安建筑科技大學(xué) 710055；2 清華大學(xué)土木工木系 北京 100084)
【提要】 在對銹蝕鋼筋混摹玖受汀抗件試驗(yàn)研究和非線性有限元分析的基礎(chǔ)上，得到了銹蝕鋼筋混凝土受彎構(gòu)件鋼筋和混凝土的應(yīng)力和應(yīng)變特性。針對銹蝕鋼筋與混凝土之間滑移增大、混凝土平均應(yīng)變和鋼筋應(yīng)變不滿足平截面假定的特征，建立了混凝土應(yīng)變和鋼筋應(yīng)變之間的幾何關(guān)系。運(yùn)用極限平衡理論，建立了與銹蝕鋼筋受彎構(gòu)件正截面受力性能相一致的計(jì)算模型。
【關(guān)鍵詞】 鋼筋混凝土 鋼筋【蝕 有稀開 試驗(yàn) 計(jì)算模型
Flexural Strength Model of Corrosive Reinforced Concrete Flexural Member/Xu Shanhua１，2，Zeng Ke１，Niu Ditao1 (1 School of Civil Engineering,Xian University of Architecture & Technology,Xian 710055,China; 2 Department of Civil Engineering,Tsinghua University,Beijing 100084,China)
Abstract:Based on finite element simulation and experimental study of corroded reinforced concrete flexural members,the influence of the corroded degree of steel bar on the slip between the steel bar and the concrete,the steel and concrete strain are studied. Based on the fact that plane sections before bending dont exist after bending,a coordinate equation of steel and concrete strain is derived for flexural members. A calculation model for flexural
 strength of the  members is proposed.
Keywords:reinforced concrete; steel corrosion; finite element; experiment; calculation model