铁道科学与工程学报2016，Vol.13Issue(7)：1253-1260,8.
斜坡软弱地基路堤双指标设计体系
Double criterions design syste m of e mbankment over sloped weak ground
摘要
Abstract
In order to obtain the relationship between sloped weak ground deformation and embankment stability accurately,a numerical model of embankment over sloped weak ground was established based on the elasto-plas-tic finite element method.The double-criterion design system considering“deformation”and“stability”was put forward according to ground deformation coefficient and safety factor.They were respectively obtained by elasto-plastic deformation and shear strength reduction method with the field test results combined from the Chongqing-Huaihua Railway.The design system is proved to be scientific and operable,and the application steps of the de-sign system are recommended.The results show that the stability and the deformation trends of embankment over sloped weak ground could be more truly reflected by the double criterions design system.The engineering design and construction could also be effectively guided by the design system.关键词
斜坡软弱地基路堤/稳定安全系数/地基变形系数/有限元法/剪切强度折减法/刚体极限平衡法Key words
embankment over sloped weak ground/safety factor/ground deformation coefficient/FEM/shear strength reduction method/rigid limit equilibrium method分类
交通工程引用本文复制引用
蒋鑫,刘晋南,吴朝阳,姜春亮,邱延峻..斜坡软弱地基路堤双指标设计体系[J].铁道科学与工程学报,2016,13(7):1253-1260,8.基金项目
国家自然科学基金资助项目（51378440）；国家重点基础研究发展计划（973计划）项目（2013CB036204）；中央高校基本科研业务费专项资金资助项目 （）
