| Summary: | 碩士 === 國立臺北科技大學 === 土木工程系土木與防災碩士班 === 106 === Up to now, the classical theory of the behavior of saturated soil has been very well developed and applied to mankind economy. They have successfully solved problems of settlement and groundwater infiltration caused by soil structure loading, and successfully predicted the problem of slope failures. However, the behavior and mechanism of unsaturated soil were generally studied as experimental physical properties, and the case literature of unsaturated soil via numerical analysis is stay rare. Therefore, this study used finite element analysis to explore the slope stability and consolidation of unsaturated soil. To verify the coupling effect in finite element analysis on unsaturated soil, the stress state, displacement, pore-water pressure distribution, saturation and other physical quantities were examined a series of parametric study. Firstly, the performance of unsaturated slope stability under rainfall was first studied, and evaluated its failure sliding surface, displacement and pore-water pressure distribution under infiltration. were known. The case of soil improvement under vacuum consolidation to examine its subsidence behavior, pore-water pressure dissipation behavior, and predicted its settlement period and the change pore-water pressure.
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