南水北调与水利科技2017，Vol.15Issue(3)：139-144,6.DOI:10.13476/j.cnki.nsbdqk.2017.03.023
基于k0固结条件的淤泥土排水蠕变特性试验研究
Drained creep characteristic of silt soil based on k0 consolidation
摘要
Abstract
The creep characteristic of saturated silt soil was studied through k0 consolidation creep tests under the conditions of axial loading and lateral lightening. The following results were found. First, the axial creep patterns of the two stress paths were basically consistent under the drainage conditions. The volume strains were much smaller than the axial st rains. The volume st rains showed an alternation between shear shrinkage and shear dilatancy w ith the passage of time. The Merchant and Burgers creep models both had good fitting accuracy. The creep paramet er EM showed no significant increasing or decreasing trend with the increase of deviatoric st ress level, but the other creep parameters EK , ηK , ηM of the tw o creep models decreased wit h the in-crease of deviatoric st ress level. These f indings suggested t hat the creep strain of silt soil is mildly influenced by viscoelastic modulus, but largely inf luenced by the viscous coefficient and elastic modulus.关键词
淤泥土/k0固结/蠕变试验/Merchant模型/Burgers模型Key words
siltsoil/k0 consolidat ion/creeptest/Merchant model/Burgers model分类
建筑与水利引用本文复制引用
王艳芳,周治刚,蔡燕燕..基于k0固结条件的淤泥土排水蠕变特性试验研究[J].南水北调与水利科技,2017,15(3):139-144,6.基金项目
国家自然科学基金项目(51308234) National Natural Science Foundation of China(51308234) （51308234）
