《K法》是1937年苏联Д.В.安格尔斯基按照弹性地基上的无限长梁原理进行分析得出的成果用到长桩水平承载力计算的一个方法,以后我国有关单位在此基础上又进一步推导出定长桩的计算公式,编制计算长桩和定长桩的内力与变位的无量纲表以及根据试桩资料修定K值等工作。《K法》现已列入我国公路桥涵设计规范中作为计算桩水平 “K Act” is a method used by the calculation of the horizontal bearing capacity of long piles by the result of the analysis by the Anglo-Szczeaginski Foundation of Infinitely Long Beams in 1937 by the U.S. Army. In the future, On the basis of this, the formula of fixed-length piles is further deduced, and the dimensionless tables for calculating the internal forces and displacements of long-pile and fixed-length piles are compiled, and the value of K is revised according to the test pile data. “K Act” is now included in the design specifications of highway bridges and culverts as the calculation of pile level