异型纤维土六棱砖骨架护坡技术研究  

Research on Slope Protection Technique Using Hexagonal Brick Skeleton Filled with Heterotype Fiber Soil

作　　者：王昊[1] 杜晓燕[2] 叶阳升[1] 张千里[2,3] WANG Hao;DU Xiaoyan;YE Yangsheng;ZHANG Qianli(China Academy of Railway Sciences,Beijing 100081,China;Railway Engineering Research Institute,China Academy of Railway Sciences,Beijing 100081,China;State Key Laboratory for Track Technology of High Speed Railway,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院,北京100081 [2]中国铁道科学研究院铁道建筑研究所,北京100081 [3]高速铁路轨道技术国家重点实验室,北京100081

出　　处：《铁道建筑》2017年第9期100-103,共4页Railway Engineering

基　　金：中国铁道科学研究院基金(2016YJ037)

摘　　要：针对铁路边坡在南方多雨区易冲刷和西北干旱区易冻裂的问题,通过数值模拟对比分析了异型纤维土六棱砖骨架护坡、异型纤维土与植物护坡、异型纤维土护坡3种护坡技术。结果表明:异型纤维土护坡、异型纤维土与植物护坡只能略微提高坡体土的黏聚力与内摩擦角,异型纤维土与护坡骨架共同作用时,坡体土的黏聚力与内摩擦角提高得比较明显,同时其滑移面的位移临界值分别较前二者提高了30%,15%左右。将异型纤维土六棱砖骨架护坡技术应用于铁科院东郊试验基地大环K6+400处铁路路基边坡整治,可供新建线路、既有线路边坡治理时参考。In view of the problem that the railway slopes are easy to be scoured in the rainy area of south China and be frozen in northwest China arid area,three slope protection techniques such as hexagonal brick skeleton slope filled with heterotype fiber soil,heterotype fiber soil and plant slope,heterotype fiber soil slope were compared and analyzed by numerical simulation.The results show that cohesion and internal friction angle of slope soil of heterotype fiber soil slope,heterotype fiber soil and plant slope are slightly improved.Under the protection of heterotype fiber soil and hexagonal brick skelton,cohesion and internal friction angle of slope soil are obviously improved T he critical slope displace of slip surface is increased respectively by30%and15%compared with the first two T he slope protection technique using hexagonal brick skeleton filled with heterotype fiber soil was applied at the railway subgrade slope of the large ring K6+400on the eastern suburb test base of C hina Academy of Railway Sciences.It provides technical reference for similar treatment engineering of new or existing railway subgrade slopes.

关 键 词：路基边坡 异型纤维土 六棱砖骨架护坡 黏聚力 冲刷 冻胀 

分 类 号：U213.158[交通运输工程—道路与铁道工程]