压缩曲线的公式化及其应用

本文在大量固结试验资料分析的基础上,建立了e～p曲线的关系式;导得了确定先期固结压力的计算式,从而弥补了长期以来采用casagrande法时最小曲率半径难以确定或因人而异的缺陷.本文导得的沉降计算公式仅与土中应力有关而与孔隙比无关,因此,在采用分层总和法计算沉降时不再依赖于e～p曲线.

Formularization of Compression Curve and Its Application

Based on a large number of data analysis of laboratory consolidation tests, a relation expression between pressure and void ratio is set up. A formula determining the preconsolidation pressure values is derived from this expression. The formula made up the defect that the smallest radius of curva ture is difficult to determine, or is varying from person to person. The expressions relate to the stresses rather than void ratio in soil here, therefore, the e-p curve is unnecessary when the settlements are computed with layerwise summation methed.