房建深基坑边坡安全稳定性评估方法对比研究  

Comparison and Study of Safety and Stability Evaluation Methods for Building Deep Foundation Pit Slopes

作　　者：王博男 WANG Bo-nan(China Railway 18th Bureau Group Beijing Engineering Co.,Ltd.,Beijing 100162,China)

机构地区：[1]中铁十八局集团北京工程有限公司,北京100162

出　　处：《宜春学院学报》2024年第6期43-46,共4页Journal of Yichun University

摘　　要：在探究房建深基坑边坡稳定性分析的双重手段中,本文深入探讨了极限平衡法与有限元法在加固过程中的显著差异。研究着重于45°和60°两种坡度的探讨,并在0°、15°以及30°的倾斜角度下采用钉子加固措施。结果表明,在安全系数、临界滑动面及土钉轴力等方面,极限平衡法展现出较有限元法更高的安全指标。两种方法在揭示的破坏面上展现出显著的分歧:在45°坡度下,极限平衡法揭示了土钉承受更大的轴力;而60°坡度时,有限元法却指出土钉轴力的增强。此外,钉长、土钉相互作用以及抗弯刚度等因素对稳定性分析结果产生了不可忽视的影响。In this paper,the difference between the limit equilibrium method and the finite element method in the process of strengthening is discussed.The study focused on the slope of 45°and 60°,and adopted nail reinforcement measures at 0°,15°and 30°.The results show that the limit equilibrium method performs better than the finite element method in terms of factor of safety,critical slip surface and axial force of soil nails.The two methods show significant differences on the failure surface.The limit equilibrium method reveals that the soil nailing is subjected to a greater axial force at a 45°slope,while the finite element method indicates an increase in the axial force of the soil nailing at a 60°slope.In addition,factors such as nail length,soil nail interaction and bending stiffness have significant effects on the stability analysis results.

关 键 词：土钉支护 边坡 极限平衡法 有限元法 

分 类 号：TD824.7[矿业工程—煤矿开采]