混凝土桥梁耐久性2020年度研究进展

近年来，混凝土桥梁的耐久性引起广泛关注，混凝土桥梁的耐久性直接影响到长期服役桥梁的安全性和使用寿命，是桥梁研究的热点之一。目前，混凝土桥梁耐久性的研究主要分为两个方面：一是从材料的损伤机理层面入手，研究桥梁构件材料的破坏方式和影响因素，分析混凝土桥梁材料的耐久性影响作用机理；二是从桥梁结构的整体出发，研究桥梁耐久性能的设计、评估以及桥梁的养护方案等，探究提高混凝土桥梁结构耐久性的措施。为全面掌握混凝土桥梁耐久性的研究动态，从混凝土桥梁的设计、桥梁混凝土材料的耐久性研究、混凝土桥梁的钢筋锈蚀研究、混凝土桥梁的耐久性提升技术、不同服役环境对桥梁耐久性的影响、长期服役性能评估及寿命预测等方面对2020年关于混凝土桥梁耐久性的论文进行梳理，探讨未来混凝土桥梁耐久性的研究重点和发展方向。

State-of-the-art review of the durability of concrete bridges in 2020

In recent years, the durability of concrete bridges has attracted extensive attention from researchers and has been one of the hot topics in bridge research. The durability of concrete bridges can affect the safety and service life of bridges directly. Currently, the research on the durability of concrete bridges is mainly divided into two aspects: 1) From the perspective of the damage mechanism of the materials, the damage modes and influence factors of the bridge component materials are studied and the influence mechanism of the durability of the concrete bridge materials is analyzed; 2) From the whole of the bridge structure, the design and evaluation of the durability of the bridge and the maintenance of the bridge are studied, and the methods to improve the durability of the concrete bridge structures are explored. In order to grasp the research trend on the durability of the concrete bridge, this paper reviewed the literature on the durability research of concrete bridges by domestic and foreign scholars in 2020, from the design of the concrete bridge, the durability of the concrete material research, the study of concrete bridge reinforcement corrosion and the durability of concrete bridge improving technology, the influence of different service environment on the durability of the bridge, performance evaluation and service life prediction. The research focus and development direction of the durability of concrete bridges in the future are discussed.