Evaluation of piled-supported structures under extreme scour conditions

冲刷是由水流和海浪引起的土壤侵蚀过程，它影响海滩、堤坝和地基等自然和人为地貌。冲刷不仅会对基础造成土壤支撑的损失，还会导致基础构件的劣化，从而危及结构的完整性和公共安全。冲刷是一个世界性的问题。这已成为桥梁破坏的主要原因。根据Lagagse等人的说法。(2007)，美国60%的桥梁故障是由冲刷造成的。

Scour is a process of soil erosion caused by currents and waves, which affects natural and man-made features such as beaches, levees, and foundations. Scour can result in not only the loss of soil supports to foundations, but also the deterioration of the foundation elements, therefore compromising the structural integrity and threatening public safety. Scour is a worldwide problem. It has been the predominant factor responsible for the bridge failures. According to Lagasse et al. (2007), 60% of bridge failures in the United States resulted from scour.