采用有限元法对国内最高(62 m)的山西北张沟加筋黄土高填路堤稳定性进行了数值模拟,对其最大主应力、最小主应力、剪应力和塑性破坏区及其变形进行了计算,然后将其计算结果与未加筋路堤相比较,得出高填方加筋黄土路堤及地基变形特性和应力特性的变化规律。结果表明,由于加筋的作用,降低了黄土高路堤的变形,提高了其稳定性。这与现场沉降观测结果基本一致。
Numerical simulation analyses of the highest reinforced embankment in Beizhang loess valley,Huozhou Town,Shaanxi Province,China,were carried out with finite element method.It is analyzed for the maximum and imum strains and stresses,shear stress,plastic zone of the highest embankment.The characteristics of strain and stress of high reinforced embankment and foundation are gotten,based on the comparison between reinforcement and non-reinforcement.The results show that the geo-grid not only enhance the stability of high embankment and foundation but also reduce its deformation.The FEM analysis results agree with the field tests.
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