土体冻胀对支挡结构影响研究现状及展望  

Present Situation and Prospect of Research on the Impact of Soil Frost Heave on Supporting Structures

作　　者：孙超[1] 周艳生 

机构地区：[1]吉林建筑大学测绘与勘查工程学院,长春130118

出　　处：《吉林建筑大学学报》2016年第1期13-18,共6页Journal of Jilin Jianzhu University

基　　金：住房和城乡建设部研究开发项目(2012-K3-16)

摘　　要：随着城市的发展,越来越多的工程转向地下,向地下要空间.伴随基坑工程的增多,工程事故也时有发生.我国多年冻土和季节冻土面积分别占国土面积的21.5%和53.5%.在这些地区,建筑基坑往往受冻、融循环作用而破坏,给寒冷地区的基坑支挡结构施工的安全性造成较大的隐患,也给科研、设计和工程施工单位带来诸多新的挑战.因此,在冻土地区进行基坑工程建设,就必须对土体冻胀对支挡结构的影响进行研究.本文对国内外土体冻胀对支挡结构影响作用机理、影响因素、防冻胀措施进行了阐述.总结了该领域理论分析方法的研究现状,详细介绍了支挡结构受冻胀影响的现场监测的研究成果.对近年来数值模拟分析方面取得的成果进行了综述,并对支挡结构受土体冻胀影响研究的未来发展趋势进行了探讨.With the development of the city, more and more projects go to the ground, to the underground space. There are more and more foundation pit projects, foundation pit engineering accidents also gradually appear. China~ permafrost and seasonal frozen soil area is respectively 21.5% and 53.5% of the total land area. In these areas, building foundation pits often damage by freezing and thawing cycle, causing great security hidden danger for foundation pit retaining structure safety in cold areas, putting forward a lot of new challenges to the research, design and construction units. Therefore, foundation pit engineering construction in permafrost regions, it must be study on the impact of soil frost heave on supporting structures. Action mechanism, influencing factors, anti freezing measures of impact of soil frost heave on supporting structures are summarized and analyzed at home and abroad： research situa- tion of theoretical analysis methods in this field are summarized; the field monitored research achievements of retai- ning structures affected by frost heave are introduced in detail and the achievements of numerical simulation analysis in recent years are summarized; the future development trend of research work of retaining structures affected by frost heave is discussed.

关 键 词：基坑工程 冻胀 支挡结构 水平冻胀力 现场监测 数值模拟 

分 类 号：TU432[建筑科学—岩土工程]