Evaluation of piled-supported structures under extreme scour conditions

冲刷是一种由水流和波浪引起的土壤侵蚀过程，它会影响自然和人工特征，如海滩、堤坝和地基。冲刷不仅会导致地基的土体支撑丧失，还会导致地基构件的劣化，从而影响结构的完整性，威胁公共安全。冲刷是一个世界性的问题。它已成为桥梁失效的主要原因。根据Lagasse等人（2007）的研究，美国60%的桥梁损坏是冲刷造成的。

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.