湖南大学学报（自然科学版）Issue(6)：85-91,7.
基于改进西原模型的软土流变一维固结解析
Analytical Solution for Rheological One-dimensional Consolidation of Soft Soil based on Improved Nishihara Model
摘要
Abstract
In order to solve the settlement calculation problem of saturated soft soil under different stress levels,the low stress component of the Nishihara model was analyzed and improved after considering the rheological properties.Through the Laplace transform and its inverse transform,a one-dimensional consolidation analytical solution was obtained under instantaneous loading condition.Based on the solu-tion,the unified analytical solution was obtained in the method of integral under multilevel loading condi-tions.And the analytical solution was used in the settlement calculation for the test section of Dongting Lake Area soft soil embankment.It has been shown that the calculated settlement values of the analytical solutions under different stress levels have different change laws,which is in agreement with those of the field tests.At the early stage of consolidation,the calculated consolidation settlement rates are much lower than that of the elastic model under the same conditions.Therefore,when calculating the settlement of soft foundation,it is necessary to consider the influence of different stress levels on the settlement of soft foundation,and to consider lag effect caused by soft soil creep.关键词
固结/改进西原模型/软土/沉降计算/滞后效应Key words
consolidation/the improved Nishihara model/soft soil/settlement calculation/lag effect分类
建筑与水利引用本文复制引用
邓宗伟,唐葭,朱志祥,付贵海,聂如松..基于改进西原模型的软土流变一维固结解析[J].湖南大学学报（自然科学版）,2014,(6):85-91,7.基金项目
国家自然科学基金资助项目(51108464) （51108464）
湖南省科技计划项目(2013GK3086) （2013GK3086）
湖南省教育厅重点研究项目(09A016) （09A016）
湖南省教育厅科学计划项目(12C0580) （12C0580）
湖南省教育厅青年项目(13B010) （13B010）
