Scour, defined by the loss of geomaterials surrounding a foundation support system, is a primary cause of bridge failure in the United States and worldwide. Work herein presents a comprehensive review of the current state of knowledge on geotechnical aspects of erodibility, factors influencing pier scour, factors complicating pier scour assessment, and databases available on erodibility and pier scour. A summary of deterministic pier scour models, developed since 1990, is presented in view of the factors affecting scour rate and equilibrium magnitude. The study discusses challenges in the predictive approaches reviewed in the paper. In addition, advancements in probabilistic pier scour models, and observation-based models are summarized. Four pier scour models, namely Wilson (1995) model, Melville (1997) model, Hydraulic Engineering Circular No. 18 (2012) model, and Briaud (2014a) model are comparatively applied to data from laboratory pier scour database. Error statistics and accuracy, precision, and probabilistic distribution of predictions from these models are presented and discussed.

冲刷是由基础支撑系统周围的土工材料损失造成的，它是美国和世界范围内桥梁破坏的主要原因。本文的工作提出了对侵蚀性的岩土工程方面，影响码头冲刷的因素，使码头冲刷评估复杂的因素以及有关侵蚀性和码头冲刷的可用数据库的当前知识状态的全面综述。鉴于影响冲刷率和平衡强度的因素，对1990年以来开发的确定性冲刷模型进行了总结。该研究讨论了本文回顾的预测方法中的挑战。另外，总结了概率性码头冲刷模型和基于观测的模型的进步。四种码头冲刷模型，即Wilson（1995）模型，Melville（1997）模型，液压工程通告No. 18（2012）模型和Briaud（2014a）模型被比较地应用于实验室冲刷数据库中的数据。本文介绍并讨论了这些模型的错误统计信息以及准确性，准确性和预测的概率分布。