压实黄土蠕变模型及工程应用研究  

Study on Compacted Loess Creep Model and Its Engineering Application

作　　者：汪芳芳 路洪斌 王秀秀 WANG Fangfang;LU Hongbin;WANG Xiuxiu(School of Management,Wanjiang University of Technology,Ma'anshan 243000,Anhui,China)

机构地区：[1]皖江工学院管理学院,安徽马鞍山243000

出　　处：《建筑施工》2025年第4期634-637,共4页Building Construction

基　　金：安徽省科研计划编制项目(2024AH051868);皖江工学院校级科研项目(WG24044)。

摘　　要：为研究黄土的蠕变特性,基于多次重复的一维固结蠕变试验,分析了分级加载和分别加载条件下压实黄土的蠕变规律,建立压实黄土的双曲线经验模型和Burgers模型,并将Burgers模型转化为高填方工程的沉降计算公式。结果表明:压实黄土呈衰减蠕变特性,在2种加载条件下,蠕变时间与变形的比值与蠕变时间呈良好的线性关系;运用改进的沉降计算公式,对延安大学新校区高填方工程实测数据进行拟合,其结果与实测值相吻合,表明此公式可为填方工程预测变形提供参考。To study the creep characteristics of loess,repeated one-dimensional consolidation creep tests are conducted.The creep behavior of compacted loess under step loading and separate loading conditions is analyzed,and a hyperbolic empirical model and a Burgers model for compacted loess are established.The Burgers model is then transformed into a settlement calculation formula for high embankment engineering.The results show that compacted loess exhibits attenuation creep characteristics,and the ratio of creep time to deformation demonstrates a good linear relationship with creep time under both loading conditions.The improved settlement calculation formula is used to fit the measured data of the high fill project at the new campus of Yan'an University,and the results match the measured values,indicating that this formula can provide a reference for predicting deformation in embankment projects.

关 键 词：压实黄土 土体蠕变 一维固结蠕变试验 双曲线经验模型 BURGERS模型 高填方工程 沉降计算公式 

分 类 号：TU753[建筑科学—建筑技术科学]