中文摘要：

根据从材料结构到性能机理再到工程应用的研究过程，从细观模型、退化过程以及多尺度方法3个方面，对近些年细观尺度上的桥梁混凝土结构耐久性的国内外研究进行了简要综述。分析结果表明：在细观模型方面，已经发展出基于真实骨料参数的骨料模型，代表了当前该领域研究的最高水平；传统的骨料模型由于较高的模拟效率仍具有一定的应用价值；在退化过程方面，针对单一退化机理的研究已经比较成熟，而耐久性能与力学性能退化的耦合效应还有待进一步研究；针对多尺度方法的研究不仅有效提高了细观尺度上的模拟效率，同时也建立了细观尺度与工程尺度之间的联系；参数传递是多尺度方法中的一种基本手段，参数传递过程中所涉及的概率性问题以及混凝土细观模型对参数传递过程的影响仍有待进一步研究。

英文摘要：

According to the research process from the material structure, performance mechanism to project application, domestic and foreign researches on the durability of concrete structures in bridges at meso-scale in recent years were reviewed from three perspectives including meso-scale model, deterioration process and multi-scale method. The result shows that in the aspect of meso-scale model, the aggregate model based on the parameters from real aggregates has been already developed, which represents the highest level of the research in this field. However, traditional aggregate models still have their value in application due to the high simulation efficiency. In the aspect of deterioration process, the research on a single deterioration mechanism is already sufficient, while the coupled effect of deteriorations of durability performance and mechanical performance still needs further research. The research in the aspect of multi-scale method can not only effectively improve the simulation efficiency at meso-scale, but also establish the relationship between meso-scale and engineering scale. Parameter passing is one of the basic approaches in multi-scale method. The related probability issue during parameter passing and influence of the meso-scale model of concrete on parameter passing procedure still need further re- search.