牛荻涛  卢  梅  王庆霖
    （西安建筑科技大学  西安 710055）

[提要] 锈蚀构件的承载力计算是混凝土结构耐久性评估的关键性问题。分析了混凝土中钢筋锈蚀造成的结构性能退化和锈蚀梁的破坏特征，立足于现行规范的承载力计算公式，提出了锈蚀梁的受弯承载力计算模型，并重点探讨了粘结性能退化对承载力计算的影响，给出了协同工作系数的计算公式。最后通过50个锈蚀梁承载力试验结果对本文模型进行验证分析。
[关键词]  锈蚀钢筋混凝土梁  受弯承载力  协同工作系数  试验

Calculation on bearing capacity of corrosive members is the key to the problem of durability assessment of reinforced concrete structures.The structural property deterioration due to steel corrosion in concrete is analyzed.The bearing capacity calculation model is set up based on the current codes. And the influence of bond deterioration to bearing capacity is discussed emphaticaly. At last the formula for calculation of the co-operating factor is given. And the model given is verified by testing 50 corrosive beams.
Keywords: corrosive reinforced concrete beams; bending capacity; co-operating factor; test