The Stability Study Of Soft Soil Foundation On Expressway

For the soft soil typifies the high water content and low intensity and strong compressibility and high sensitivity, the expressway built on soft soil foundation will be faced two problem that are the settlement and the stability. Then the stability is the most radical one.hi this paper, analyzing a earth bank slumping example, the slumping reasons and treatments are given. By the studying to some computing methods of intensity growth, the result is The Effective Consolidation Stress Theory is more normally. Due to the characteristics of slumping, The Swedish Slipicircle Method is satisfied to engineering. Applied for the methods, a practical engineering works was analysized. The computing results are almost satisfied with the stability needs. But the safety factor is closed to the critical value. So in the construction period, the stable control must well be done. Combined with the observation data to a piece of expressway being built, a stable control criterion is given, which can be used to direct the constructing.The stability analysis of soft soil subgrade is complex, which is affected by lots of factor. The research in this paper provides a way and method to the stability analysis of soft soil subgrade, so the paper inheres reference value and practical significance.