基于有限元分析的路基高边坡稳定性研究

Research on stability of subgrade high slope based on finite element analysis

依托某二级公路高边坡路基施工项目,对比有限元分析方法和极限平衡方法两种路基边坡稳定性分析方法;利用有限元分析软件ABAQUS和理正岩土分析软件,分别对施工项目中涉及到的高边坡路基进行稳定性计算,并对比验证准确性;基于分析结果,提出有效的防护措施。结果表明:两种方法的稳定性验算结果较为接近,施工项目中的高边坡路基均满足稳定性要求;ABAQUS有限元分析法可较好地分析应力、应变以及变形发展,理正岩土分析软件具有模拟计算快捷简便的优势,实践过程中应将二者结合应用。

Based on a high-slope subgrade construction project of a secondary highway,the finite element analysis method and the limit balance method are compared.The finite element analysis software is used to ABAQUS and adjust the geotechnical analysis software,and the stability of high slope subgrade is calculated and verified.Based on the analysis results,effective protective measures are proposed.The results show that the stability check results of the two methods are relatively close,and the high slope roadbed in the construction project meets the stability requirements.The ABAQUS finite element analysis method can better analyze the stress,strain and deformation development,and the geotechnical analysis software has the advantages of fast and simple simulation calculation,and the two should be combined and applied in the process of practice.