岩土工程学报2025，Vol.47Issue(2)：225-233,9.DOI:10.11779/CJGE20231161
软黏土取样扰动机理、评估方法及控制措施研究进展
Research progress on disturbance mechanisms,evaluation methods and control measures for sampling of soft clay
摘要
Abstract
The soft clay,characterized by high moisture content,strong compressibility and high sensitivity,is prone to disturbance during the sampling process,resulting in significant changes in the strength and deformation characteristics of soils.Understanding the mechanical mechanism behind sampling disturbance,reducing its impact and accurately evaluating the sample quality are crucial for determining the representative soil parameters in engineering design.To address these issues,the current researches on sampling disturbance in soft clay are summarized,including the mechanical mechanisms of sampling disturbance,the macroscopic and microscopic effects,the methods for the sample quality evaluation and the strategies to reduce disturbance.The researches show that there are abundant results on the macroscopic mechanical mechanisms of sampling disturbance.However,there is a lack of corresponding microscopic experimental evidence and analysis to support these macroscopic results.Furthermore,the most existing quality evaluation indices are designed for the clay and may not applicable to the low-plasticity intermediate soils such as silty clay and silt.Currently,there is still no unified quality evaluation system for the soil samples with varying properties.The reconsolidation methods can effectively reduce the stress release during the soil sampling process,but they cannot restore the soil structure damaged by sampling disturbance.Based on this,four suggestions and prospects for future researches are proposed.关键词
软黏土/取样扰动/土样质量评估/再固结方法Key words
soft clay/sampling disturbance/sample quality evaluation/reconsolidation method分类
建筑与水利引用本文复制引用
才昊,叶冠林,兰立信,张琪,朱文轩..软黏土取样扰动机理、评估方法及控制措施研究进展[J].岩土工程学报,2025,47(2):225-233,9.基金项目
国家自然科学基金项目(42072317) （42072317）
上海市社会发展科技攻关项目(21DZ1204300) （21DZ1204300）
