(1 西安建筑科技大学 710055；2 清华大学土木工木系 北京 100084)
【提要】 在对锈蚀钢筋混摹玖受汀抗件试验研究和非线性有限元分析的基础上，得到了锈蚀钢筋混凝土受弯构件钢筋和混凝土的应力和应变特性。针对锈蚀钢筋与混凝土之间滑移增大、混凝土平均应变和钢筋应变不满足平截面假定的特征，建立了混凝土应变和钢筋应变之间的几何关系。运用极限平衡理论，建立了与锈蚀钢筋受弯构件正截面受力性能相一致的计算模型。
【关键词】 钢筋混凝土 钢筋【蚀 有稀开 试验 计算模型
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