桥墩局部冲刷65—1式是依据我国桥墩局部冲刷的大量实测资料及模型试验数据,并参考了一些国外资料,汇总得出的计算式。经过十余年的使用以及观测验证,计算精度尚好,较为符合我国河流的桥墩局部冲刷特点。惟该式仅适用于单一土壤,对于多层土壤如何应用并未涉及。河床土壤分层客观存在,对于平原河流尤以为然。故而多层土壤的桥墩局部冲刷问题在 Local pier scour 65-1 type is based on a large number of local scouring piers measured data and model test data, and with reference to some foreign information, the summary of the formula. After more than ten years of use and observation verification, the calculation accuracy is still good, more in line with the characteristics of the local scouring of the river pier. However, this formula applies only to a single soil, the application of multi-layer soil is not involved. Soil bed stratification objective existence, particularly for plain rivers. Therefore, multi-layer soil erosion of the pier in the local problems