Based on the analysis of mechanism about bridge scour, using a great number of field data from China and other countries, the bridge scour formula with clear physics concept and brief structure is put forward with the dimensional regressional analysis.

• 在现有国内外研究成果的基础上，从桥墩局部冲刷机理出发，利用不同国家的实测资料，用量纲分析原理和逐步回归分析，建立一种概念清晰、式简单的桥墩局部冲刷计算公式。