钢筋混凝土结构钢筋锈蚀模型及影响因素分析

在海洋环境下,钢筋混凝土构件的物理、力学特性随时间发生明显变化,使结构的安全度降低。影响钢筋混凝土构件耐久性的主要原因是钢筋锈蚀。关于钢筋锈蚀计算,有多种计算模型,不同计算模型的计算结果存在着较大差异,计算模型中相关参数的取值也有很多不同研究成果。本文通过算例,对各种模型及其相关参数的影响进行比较分析,可为钢筋混凝土结构耐久性设计和开展进一步研究工作提供参考。

Reinforcing Bar Corrosion Models of RC Structures and Effect Factors

In marine environment,the physical and mechanical performances of reinforced concrete members will vary distinctly with time,which reduces the safety of the structures.The main factor influencing the durability of reinforced concrete members is the corrosion of reinforcing bars.Various reinforcing bar corrosion models are presented,the results calculated from different models are evidently discrepant and the parameter values in the models determined by different literatures are quite scattered.In this paper,the various models are compared and the effects of the model parameters on calculating results are investigated through an example.It is useful for the further development of durability design theory and durability calculation method of reinforced concrete structures.