A simple mathematic model for determining preconsolidation pressure
Liu Lin1 Lu Xiaobing1,2 Wang Shuyun1
1. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
2. School of Engineering Science, University of Chinese Academy of Science, Beijing 100049, China
Abstract：Preconsolidation pressure is a common index of stress history. In order to determine the preconsolidation pressure accurately, an expression of one-dimensional compression line was proposed firstly by introducing the vertical stress corresponding to the maximum curvature in the single logarithmic coordinate. The new expression is a unified expression of soil because it can describe the compression lines of both normal consolidated soil and overconsolidated soil. Secondly, an explicit formulation of preconsolidation pressure was derived based on the new expression. The new explicit formulation requires only two parameters, and so can be easily used by engineers. Finally, comparisons with the experimental results illustrate that the mathematical model can accurately determine the preconsolidation pressure of soil.
刘 林 鲁晓兵 王淑云. 确定前期固结压力的一个简单数学模型[J]. 土木工程学报, 2019, 52(S2): 30-34, 50.
Liu Lin Lu Xiaobing Wang Shuyun. A simple mathematic model for determining preconsolidation pressure. 土木工程学报, 2019, 52(S2): 30-34, 50.
