%0 Journal Article
%T 斜坡软弱地基路堤双指标设计体系<br>Double criterions design system of embankment over sloped weak ground
%A 蒋鑫
%A 刘晋南
%A 吴朝阳
%A 姜春亮
%A 邱延峻
%A &lt
%A br&gt
%A JIANG Xin
%A LIU Jinnan
%A WU Chaoyang
%A JIANG Chunliang
%A QIU Yanjun
%J 铁道科学与工程学报
%D 2016
%X 为准确获取斜坡软弱地基变形和路堤稳定性的内在联系,运用弹塑性有限元法,建立斜坡软弱地基在路堤自重荷载作用下的数值模型,根据弹塑性变形所获的地基变形系数以及剪切强度折减法所获的稳定安全系数,结合渝怀铁路实际工点的现场测试成果,构建了兼顾“变形”与“稳定”的斜坡软弱地基路堤双指标设计体系,并论证该体系的科学性、可操作性,提出该设计体系的实际运用步骤。研究结果表明:兼顾“变形”与“稳定”的斜坡软弱地基路堤双指标设计体系可更真实地反映路堤的稳定状态及变形发展趋势,有效指导工程设计及施工。<br>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-plastic 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 design 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
%K 斜坡软弱地基路堤
%K 稳定安全系数
%K 地基变形系数
%K 有限元法
%K 剪切强度折减法
%K 刚体极限平衡法&lt
%K br&gt
%K embankment over sloped weak ground
%K safety factor
%K ground deformation coefficient
%K FEM
%K shear strength reduction method
%K rigid limit equilibrium method
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_311919