锈蚀钢骨混凝土梁的抗力计算

目的为了保证钢骨混凝土梁在服役过程中的承载能力和构件抗力满足正常使用,并完成预定功能.方法结合锈蚀钢筋混凝土梁抗力分析和钢骨混凝土梁自身的受力性能,介绍了三个阶段的钢骨锈蚀率计算模型,根据钢骨混凝土梁抗弯承载力计算公式,给出了锈蚀钢骨混凝土梁抗力统计参数计算公式,并对抗力统计参数进行了算例分析.结果抗力平均值随时间的增长下降了2.98%,变异系数随时间的增长总体上升了0.69%.结论笔者所建立的抗力统计参数计算公式是合理的,为钢骨混凝土结构耐久性评定等方面研究提供了基本资料.

Resistance Calculation of Corrosive Steel Reinforced Concrete Beam

In order to make sure that the bearing capacity and the resistance of steel reinforced concrete beams satisfy the normal usage and complete appointed function during the service process, the three stages calculated model of steel reinforced corrosion ratio were introduced with the combination of the analysis on resistance of corrosive reinforced concrete beams and the mechanical performance of steel reinforced concrete beams. According to the calculated formulas of bending bearing capacity of steel reinforced concrete beams, the formulas of calculating resistance statistical parameters were given and analyzed by examples. The results show that the average resistance decreased by 2.98% and variation coefficient increased by 0.69% with the time increasing. The formulas of calculating resistance statistical parameters are feasible, and it provides basic data to the research on durability assessment of steel reinforced concrete.