南宁外环公路膨胀土堑坡土质特性及防护措施  

Soil Characteristics and Protection Measures of Expansive Soil Cutting Slope in Nanning Outer Ring Road

作　　者：李迎春 罗得把 唐咸远[2] 

机构地区：[1]广西壮族自治区交通规划勘察设计研究院,广西南宁530029 [2]长沙理工大学交通运输工程学院,湖南长沙410076

出　　处：《西部交通科技》2014年第6期6-9,33,共5页Western China Communications Science & Technology

基　　金：广西交通科技项目"膨胀土路基处治新技术在南宁外环的全面推广应用研究"(2011-20)

摘　　要：文章以南宁外环高速公路的膨胀土(岩)路堑边坡为对象,基于边坡破坏的原因及特点,开展了膨胀土(岩)边坡的土性试验,并针对边坡的不同特点,提出了坡脚矮挡土墙+浆砌片石骨架+铺两布一膜、土工格栅柔性支护、土工格室柔性支护等多种不同土工材料的边坡支护处治方案。工程实施表明所采取的方案措施能经济有效地解决南宁外环高速公路的膨胀土路堑边坡问题。With the expansive soil（rock）cutting slope of Nanning Outer Ring Expressway as the object,based on the reasons and characteristics of slope failure,this article conducted the soil characteristics test of expansive soil（rock）slope,and regarding the different features of slopes,it proposed the slope supporting and treatment programs of many different geotextile materials,such as slope-toe dwarf re-taining wall＋mortar rubble skeleton＋pavement of two-cloth and one membrane,flexible geogrid supporting,geocell flexible supporting etc.The engineering implementation showed that the programs and measures taken can effectively and economically solve the expansion soil cutting slope problem of Nan-ning Outer Ring Expressway.

关 键 词：膨胀土 边坡 柔性支护 土工材料 防治措施 

分 类 号：U416.167[交通运输工程—道路与铁道工程]