摘要
提升岛状冻土地区路基的稳定性是寒区公路工程建设中的关键技术难题。系统分析岛状冻土地区路基稳定性的主要影响因素,针对性提出路基高度与结构设计优化、高性能填料与换填技术应用及热防护与排水系统设计等综合优化措施。研究结果表明,铺设隔热层可有效控制冻土融化深度和冻土融沉变形,铺设隔热层的深度越接近换填材料底部,对冻土融化深度和融沉变形的控制效果越好;随地基年限的增加,地基沉降逐渐增加;地基沉降随填高的增大呈正相关。在15 a时,填高10 m地基较填高2 m地基的沉降量增加了16.3 mm。
Improving the stability of roadbed in segregated frozen ground areas is a key technical difficulty in highway engineering construction in cold regions.This paper systematically analyzes the main influencing factors of roadbed stability in segregated frozen ground areas,and proposes comprehensive optimization measures such as roadbed height and structural design optimization,highperformance filler and replacement technology application,thermal protection and drainage system design.The research results show that the laying of insulating layer can effectively control the thawing depth and thaw settlement deformation of frozen soil,the closer the depth of the insulating layer is to the bottom of the replacement materials,the better the control effect on the thawing depth and thaw settlement deformation of frozen soil is;with the increase of foundation age,the foundation settlement increases gradually;the foundation settlement is positively correlated with the increase of filling height.After 15 years,the settlement of the foundation with a filling height of 10 m increases by 16.3 mm compared with that with a filling height of 2 m.
作者
赵军
周金发
张治强
陈轩
李峰
ZHAO Jun;ZHOU Jinfa;ZHANG Zhiqiang;CHEN Xuan;LI Feng(Inner Mongolia Jiaogong Maintenance Engineering Technology Co.,Ltd.,Hohhot 010051,Inner Mongolia,China)
出处
《工程技术研究》
2026年第2期33-35,共3页
Engineering and Technological Research
关键词
岛状冻土
路基稳定性
隔热层
融沉变形
segregated frozen ground
roadbed stability
insulating layer
thaw settlement deformation
