柔性挡墙在云桂铁路强膨胀土路堑边坡工程中的应用  

Application of Flexible Retaining Wall in Protection Engineering on Expansive Soil Slope

作　　者：封志军[1] 冯俊德[1] 薛元[1] 杨果林[2] 何旭 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031 [2]中南大学,长沙410083 [3]中铁十九局集团,辽阳111000

出　　处：《高速铁路技术》2012年第2期71-73,78,共4页High Speed Railway Technology

摘　　要：土工格栅柔性挡墙应用于膨胀土路堑边坡防护,在我国是一种新型的路堑边坡加固防护支挡结构。针对广西百色地区强膨胀土特性设计支护方案,对于此类支挡形式进行机理分析,提出施工工艺和技术上的要求,根据施工后的整治效果看,柔性挡墙有效防止了膨胀土因干湿循环而膨胀,同时挡墙因其容许较大变形,从而使边坡内膨胀压力因变形而释放,起到了以柔克刚的作用。目前挡墙已经历2个雨季,监测表明挡墙防护效果良好。Flexible retaining wall is a new-style supporting structure which is used in protection engineering on expansive soil slope. Based on application of such structure on the expansive soil in Baise area, the structural mechanism is ana- lyzed in the paper, construction technology and technical requirements is recommended. By judging the result of renova- tion on construction, flexible retaining wall effectively prevents the swelling of expansive soil from trying and watering circle, and as the retaining wall is allowable of more deformation, the inner swelling force in slope is released along with the deformation which plays a role of conquering the unyielding with the yielding. Up to now, the retaining wall has gone through two rainy seasons, monitoring survey indicates that it provides a sound protection.

关 键 词：膨胀土 柔性支挡 路基设计 

分 类 号：U213.1[交通运输工程—道路与铁道工程]