摘要
以兰州南绕城高速公路路堑多级高边坡工程为研究对象,建立三维边坡有限元模型,利用FLAC^(3D)岩土软件模拟分析了在暴雨和地震双重作用下已实施格构+锚杆支护的路堑多级边坡的安全稳定性。通过计算边坡位移、应力应变、塑性变形、支护结构受力及变形,得出结论:格构+锚杆支护维稳效果显著,边坡处于稳定状态,但未达到一级安全标准,可能的破坏处位于边坡中下部,特别是坡脚处,需要对这些部分加强支护。
Taking the multi-stage high slope engineering of south belt expressway in Lanzhou as the research object,a three-dimensional finite element model of the slope is established,and the safety and stability of the multi-stage cutting slope which has been supported by lattice anchor bolt under the double action of rainstorm and earthquake are simulated and analyzed by FLAC^(3D) geotechnical software.By calculating the slope displacement,stress-strain,plastic deformation,stress and deformation of the supporting structure,it is concluded that the stability maintenance effect of lattice bolt support is significant.The slope is in a stable state,but it does not reach the first-class safety standard.The potential damage is located in the middle and lower part of the slope,especially at the foot of the slope,so it is necessary to strengthen the support for these parts.
作者
王江荣
刘硕
靳存程
刘静芳
Wang Jiangrong;Liu shuo;Jin Cuncheng;Liu Jingfang(College of Information Processing and Control Engineering,Lanzhou Petrochemical Polytechnic,Lanzhou 730060,China)
出处
《甘肃科学学报》
2021年第4期134-139,共6页
Journal of Gansu Sciences
基金
兰州市科学技术局计划项目(2019-1-43)。
