期刊论文

中文

中国科技论文

2095-2783

2022

17

4

423-428

10.3969/j.issn.2095-2783.2022.04.012

2014DFA53120:国家国际科技合作专项基金 2013GDXK006:湖南省重点学科建设资助项目

本校为第一机构

针对生物酶改良粉土的固结蠕变特性，开展了不同生物酶掺量下粉土的一维固结蠕变试验，分析生物酶改良粉土的应变随时间的变化规律及次固结系数随固结应力的变化情况，提出了一种反映生物酶改良粉土蠕变过程应变与时间关系的双曲线蠕变模型，并分析生物酶掺量对双曲线蠕变模型相关参数的影响。结果表明：1)生物酶改良粉土的应变随时间的增加而增大，加载前期应变较大，后期逐步减缓并呈稳定发展趋势，生物酶改良粉土具有明显的非线性蠕变特性。2)素粉土的次固结系数随固结应力的增加呈先减小后增大再减小的趋势，改良后粉土较素粉土的次固结系数小，生物酶能有效改善粉土的蠕变特性。3)生物酶改...

In order to study the consolidation creep characteristics of bioenzyme-treated silt,one-dimensional consolidation creep tests of silt modified by different content of bioenzyme were carried out.The variation of strain with time and the correlation between secondary consolidation coefficient and consolidation stress were analyzed.A hyperbolic creep model was proposed to predict the relationship between strain and time of bioenzyme-treated silt in creep process.The effect of bioenzyme content on the parameters of hyperbolic creep model were analyzed.The experimental results show that:1)the strai...