季冻区高速公路路基冻胀规律数值分析  

Analysis of the law of frost heave about high-speed road subgrade in seasonal frozen area

作　　者：侯兆领 杨欢 Hou Zhaoling;Yang Huan(CCCC Third Highvay Engineering Co.,Ltd.Beijing 100102 China)

机构地区：[1]中交三公局第二工程有限公司,北京100102

出　　处：《山西建筑》2023年第2期139-143,共5页Shanxi Architecture

摘　　要：在西北的季节性冻土区,盐渍土的冻胀对路基稳定及安全性的影响较为严重。选取柳敦高速冻害较严重区段的左幅道路为研究对象,通过现场监测和数值分析,对该路段地基冻胀特性及其对路基变形的影响进行了研究。建立有限元模型对地基与路基相互作用的温度场、水分场、盐分场以及变形场的综合效应进行分析。In the seasonal frozen soil area of northwest China,the frost heave of saline soil has a serious impact on the stability and safety of subgrade.Taking the left road in Liuyuan-Dunhuang Expressway with severe frost damage as the research object,the frost heaving characteristics of the subgrade and its influence on the subgrade deformation are studied through on-site monitoring and numerical analysis.The finite element model is established to analyze the comprehensive effects of the temperature field,water field,salt field and deformation field of the interaction between the foundation and the subgrade.

关 键 词：盐渍土地基 季节性冻土区 冻胀特性 模拟研究 

分 类 号：TU448[建筑科学—岩土工程]