西北工程技术学报2025，Vol.24Issue(3)：224-231,8.
考虑低温影响的硫酸盐渍土三轴蠕变试验
Triaxial Creep Test of Sulfate Saline Soil Considering Low Temperature
摘要
Abstract
To study the creep characteristics of soil in a long-term"low temperature+salt"environment,a series of low-temperature creep tests were conducted using the KTL-LDF-50 triaxial instrument.The creep characteristics under different temperatures,salt content and loading stress were analyzed.Based on the creep test data,the long-term strength parameters under various testing conditions were calculated,and their variation trends were analyzed.The results show that:the creep curves of sulfate saline soil under different test conditions develop in three stages:instantaneous elastic deformation,decay creep,and stable creep;when salt content is constant,the creep deformation of soil increases with rising temperature,while long-term strength decreases;the soil with 2%salt content exhibited the highest creep deformation,followed by 0%salt content,while the 5%salt content showed the least deformation,with the trend of long-term strength being inversely proportional;at the initial loading stage,the strain increments of the stress-strain isochronal curves under varying temperatures and salt contents were largest,gradually decreased,and ultimately stabilized over time.关键词
硫酸盐渍土/三轴蠕变试验/蠕变特性/长期强度Key words
sulfate soils/triaxial creep test/creep characteristics/long-term strength分类
建筑与水利引用本文复制引用
王展展,张卫兵,侯良森..考虑低温影响的硫酸盐渍土三轴蠕变试验[J].西北工程技术学报,2025,24(3):224-231,8.基金项目
宁夏自然科学基金项目(2024AAC03070) （2024AAC03070）
宁夏回族自治区教育厅高等学校科学研究项目(NYG2024003) （NYG2024003）
