考虑土层变形特征的边坡稳定性分析方法研究  

Study on Slope Stability Analysis Method Considering Soil Deformation Characteristics

作　　者：郝广杰 HAO Guangjie(Qinghai Traffic Construction Management Co.,Ltd.,Xining 810003,China)

机构地区：[1]青海省交通建设管理有限公司,青海西宁810003

出　　处：《粉煤灰综合利用》2023年第2期62-67,共6页Fly Ash Comprehensive Utilization

摘　　要：针对特长公路生态防护边坡的土体表面应力数据结果拟合度较低的问题,进行考虑土层变形特征的边坡稳定性分析方法研究。有限元分析防护边坡仿真结构,并结合极限平衡理论,设计特长公路生态防护边坡滑动模型。根据地层变形的沉降运动特征,结合圆弧滑动法计算土体内部剪应力和正应力,得到滑动力矩。结合其他边坡稳定性影响因素,利用模糊综合评估法进行边坡稳定性分析,按照最大隶属度原则生成稳定性分析结果。仿真试验结果表明:该方法应用下,相比其他方法,土体表面应力数据结果拟合度提升了23.86%、29.55%与43.18%。In view of the low fitting degree of soil surface stress data of ecological protection slope of extra long highway,the slope stability analysis method considering the deformation characteristics of soil layer is studied.The simulation structure of the protective slope is analyzed by finite element method,and combined with the limit equilibrium theory,the sliding model of the ecological protective slope of the extra long highway is designed.According to the settlement characteristics of stratum deformation,combined with the circular arc sliding method,the internal shear stress and normal stress of soil are calculated,and the sliding moment is obtained.Combined with other influencing factors of slope stability,the fuzzy comprehensive evaluation method is used to analyze the slope stability,and the stability analysis results are generated according to the principle of maximum membership.The simulation test results show that compared with other methods,the fitting degree of soil surface stress data is improved by 23.86%,29.55%and 43.18%.

关 键 词：地层变形 边坡 公路防护 稳定性分析 有限元方法 滑动模型 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]