兰新铁路青海地区加筋土路堤边坡稳定性分析  

The stability analysis of reinforced embankment slope of Lan-Xin railway in Qinghai

作　　者：苏延桂[1] 陈仕清[2] 耿秀兰 

机构地区：[1]青海大学土木工程学院,青海西宁810016 [2]兰州交通大学土木工程学院,甘肃兰州730000 [3]青海电力设计院,青海西宁810001

出　　处：《青海大学学报（自然科学版）》2014年第2期21-28,共8页Journal of Qinghai University(Natural Science)

基　　金：教育部春晖计划项目(Z2012088);青海大学2012中青年科研基金(QDZQ2012051)

摘　　要：以兰新铁路第二双线青海地区路基工程为研究对象,应用有限元数值模拟分析法对其进行研究。通过拟定几何尺寸、确定设计参数及边界条件后构建加筋土路堤有限元模型,并对有、无加筋材料的路堤边坡和影响加筋土边坡稳定性的因素两方面对比分析后,得出相关结论。模拟分析表明,有加筋土的路堤边坡水平最大位移明显减小且安全系数较高;加筋材料的长度和层间距对边坡稳定性有一定影响,两者均有一最佳值。The stability of reinforced embankment slope of Lan-Xin railway in Qinghai is studied through numerical simulation methods. A finite element model of reinforced embankment is constructed based on geometrical size,parameters and boundary conditions. Comparative analysis on two aspects of with or without reinforced embankment material and impact reinforced soil slope stability factor is conducted. The horizontal maximum displacement of the reinforced embankment slope is reduced and with high safety. Length of reinforced material,and layer spacing of the reinforced slope have certain influences on the horizontal maximum displacement of the slope,but the effect is small to its the maximum shear strain and the safety factor.

关 键 词：高速铁路 路堤边坡 加筋材料 数值模拟 

分 类 号：U213.158[交通运输工程—道路与铁道工程]