某高速公路饱和黄土高路堤填筑沉降分析  

Analysis on Settlement of High Embankment Filled with Saturated Loess in an Expressway

作　　者：王攀[1] 王文文 张洁[1] WANG Pan;WANG Wenwen;ZHANG Jie(CCCC First Highway Consultants Co.,Ltd.,Xi'an 710068,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安710068

出　　处：《路基工程》2024年第6期94-99,共6页Subgrade Engineering

摘　　要：基于某高速公路填筑进行全过程沉降观测,对观测数据采用双曲线和星野曲线两种方法进行沉降趋势预测分析。结果表明:饱和黄土地基属于欠压密土,路堤快速填筑期沉降量较大,休整期沉降量较小;地基主要发生主固结变形,次固结变形小;采用经验系数法计算最终沉降量时,地质因素修正系数需要调整。Based on a highway filling,the whole process of settlement observation was carried out,and the observed data were analyzed by both hyperbolic and Hoshino curve methods to predict the settlement trend.The result shows that,since the saturated loess foundation is constructed of undercompacted soil,the settlement of high embankment is larger during the rapid filling period and smaller during the resting period.Normally,the primary consolidation deformation takes place on the foundation,while the secondary consolidation deformation is rare;when the empirical coefficient method is used to calculate the final settlement,the correction coefficient of geological factors needs to be adjusted.

关 键 词：软基处理 工后沉降 沉降分析 沉降观测 饱和黄土 

分 类 号：U412[交通运输工程—道路与铁道工程]