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一般冲刷64—2公式,1964年被全国桥渡冲刷学术会议推荐为生产试用公式,1982年编入《公路桥位勘测设计规程》。但因该式计算复杂,多年来生产单位应用较少。本文根据泥沙运动原理,应用数理统计方法,建立了64—2公式的简化公式。在保持原公式的基本形式和计算精度的前提下,使计算工作大为简化,有助于64—2公式的推广和一般冲刷计算研究的发展。
General scouring 64-2 formula, 1964 by the National Bridge crossing scouring academic conference recommended for the production trial formula, 1982 into the “highway bridge survey design rules.” However, due to the complexity of the formula, over the years the application of less production units. According to the principle of sediment movement, this paper established a simplified formula of 64-2 formula by using mathematical statistics method. Under the premise of maintaining the basic form and accuracy of the original formula, the calculation work is greatly simplified, which is helpful to the generalization of the 64-2 formula and the development of the general erosion calculation research.