摘要
针对沿海地区淤泥质软土长期流变变形引发的工程隐患及传统流变模型参数复杂、适用性不足的问题,文中通过室内三轴流变试验揭示其流变特征,基于西原模型构建简化经验模型,并与双曲线、指数模型对比。研究表明黏塑性变形主导软土长期流变,相较于双曲线模型和指数模型,经验模型引入等速流动项,可精准表征非收敛流变特性。此研究方法显著优于传统方法,为软土地基长期变形预测提供理论依据。
To address the engineering risks caused by long-term rheological deformation of silty soft soils in coastal areas,as well as the complexity and limited applicability of traditional rheological models,this study conducts indoor triaxial rheological tests to reveal the rheological characteristics of such soils.Based on the Nishihara model,a simplified empirical model is developed and compared with the hyperbolic and exponential models.The results show that viscoplastic deformation dominates the long-term rheology of soft soil.Compared with the hyperbolic and exponential models,the proposed empirical model incorporates an iso-velocity flow term,enabling accurate characterization of non-convergent rheological behavior.In engineering applications,the model demonstrates significantly better performance than traditional methods,providing a theoretical basis for predicting long-term deformation of soft soil foundations.
作者
耿妍琼
王世凤
邵勇
王会
CENG Yanqiong;WANG Shifeng;SHAO Yong;WANG Hui(Lianyungang Technical College,Jiangsu Lianyungang 222000,China)
出处
《低温建筑技术》
2025年第7期55-59,共5页
Low Temperature Architecture Technology
基金
江苏省高校“青蓝工程”资助项目,连云港市科技计划(社会发展)项目(SF2431)。
关键词
淤泥质软土
黏塑性变形
流变模型
经验模型
silty soft soil
viscoplastic deformation
rheological model
empirical model
