宁夏工程技术2024，Vol.23Issue(1)：42-47,6.
干湿循环下重塑粉质黏土湿陷变形及其影响因素研究
Study on the Collapse Deformation of Remolded Silty Clay under Dry-Wet Cycles and Its Influencing Factors
摘要
Abstract
To investigate the wetting collapse deformation pattern of silty clay under dry-wet cycles,typical silty clay in Yinchuan was selected as the research subject to prepare samples with different degrees of saturation and compaction and to carry out the collapsibility test.The significance analysis method of multi-factor interaction was combined to analyze the collapse deformation rate under different influencing factors.It is shown that compaction and saturation degrees had different effects on the wetting collapse deformation rate.For medium-low saturation and high saturation soils,the effect of compaction on mitigating wetting collapse deformation was significantly different under dry-wet cycles,and the mitigation effect was related to the dry-wet cycle process.The significance analysis results of the three factors,namely the number of dry-wet cycles,compaction degree,and saturation,showed that all three factors had a strong significance,and their interactive effects had different degrees of significance on the wetting collapse deformation rate.To minimize the effects of compaction and saturation on the foundation deformation,it is suggested that the initial compaction degree should not be less than 95%,and the degree of saturation should not exceed that corresponding to the optimum moisture content.关键词
干湿循环/湿陷变形/交互作用Key words
dry-wet cycles/collapse deformation rate/interaction分类
土木建筑引用本文复制引用
吴向峰,张卫兵,蒋佳莉,马桂平,管小龙..干湿循环下重塑粉质黏土湿陷变形及其影响因素研究[J].宁夏工程技术,2024,23(1):42-47,6.基金项目
宁夏回族自治区重点研发计划项目(2018BEE03005) （2018BEE03005）
宁夏高等学校一流学科建设(国内一流建设学科)项目(NXYLXK2017A03) （国内一流建设学科）
宁夏大学研究生创新项目(GIP2021051) （GIP2021051）
