本文简要介绍了国内外桥梁结构状态评估的现况,在此基础上,阐述了可靠度理论、层次分析法、模糊理论、神经网络以及基于损伤力学和疲劳断裂等桥梁结构常用的状态评估理论及方法。最后,较详细阐述了桥梁评估的过程,说明了目前桥梁评估中存在的问题,以及桥梁评估问题的本质探究。 This paper briefly introduces the status quo of bridge structural status assessment at home and abroad. On this basis, the reliability assessment theory, analytic hierarchy process, fuzzy theory, neural network and state assessment theory commonly used in bridge structures such as damage mechanics and fatigue fracture are introduced. method. Finally, the process of bridge assessment is elaborated in detail, and the existing problems in bridge assessment and the essential exploration of bridge assessment are explained.