摘要
为克服有限元强度折减法求解锚杆支护边坡稳定安全系数效果较差的问题,引入以等效强度理论为基础的锚杆密度因子,采用均匀化方法求解锚固边坡复合岩体的等效强度参数;并以浙江交工西南分公司在黔项目某工程边坡为背景,运用有限元强度折减法和ABAQUS有限元软件,分别对以常规桁架单元和等效复合岩体两种模拟形式下的边坡稳定性进行对比分析计算。研究结果表明:前者难以模拟锚杆对边坡岩体的加固效果,而后者模拟效果显著且有效。研究结果可为锚固边坡稳定性分析相关数值模拟研究及工程实践提供参考。
In order to overcome the poor effect of finite element strength reduction method in solving the stability safety factor of anchor supported slope,the anchor density factor based on equivalent strength theory is introduced,and the homogenization method is used to solve the equivalent strength parameters of composite rock mass of anchor slope.Then,taking the slope of a project of Zhejiang Jiaogong Southwest Branch in Guizhou as an example,the slope stability of two bolt simulation forms of conventional truss element and equivalent composite rock mass are compared and analyzed by using finite element strength reduction method and ABAQUS finite element software.The results show that the former is difficult to simulate the reinforcement effect of bolt on slope rock mass,while the latter has significant and effective simulation effect.The research results can provide reference for numerical simulation research and engineering practice of bolt support.
作者
赵帮跃
佘海涛
段石金
虎胜
董海龙
ZHAO Bangyue;SHE Haitao;DUAN Shijin;HU Sheng;DONG Hailong(Southwest Branch of Zhejiang Jiaogong Group Co.,Lid.,Guiyang 550001,China;Guizhou Institute of Technology,Guiyang 550001,China)
出处
《四川建材》
2022年第8期78-80,共3页
Sichuan Building Materials
关键词
有限元强度折减法
锚杆支护
边坡稳定性
等效强度理论
复合岩体
finite element strength reduction method
anchor support
slope stability
equivalent strength theory
composite rock mass
